ci: Bump version to 0.16.2 [skip ci]

.env.example

@@ -59,6 +59,8 @@ GITHUB_CLIENT_SECRET=
 # AI/ML Services
 # ===================
 # REQUIRED: Google Gemini API key for flyer OCR processing
+# NOTE: Test/staging environment deliberately OMITS this to preserve free API quota.
+#       Production has a working key. Deploy warnings in test are expected and safe to ignore.
 GEMINI_API_KEY=your-gemini-api-key
 
 # ===================

.gitea/workflows/deploy-to-prod.yml

@@ -121,12 +121,28 @@ jobs:
         run: |
           echo "Deploying application files to /var/www/flyer-crawler.projectium.com..."
           APP_PATH="/var/www/flyer-crawler.projectium.com"
+
+          # CRITICAL: Stop PM2 processes BEFORE deploying files to prevent CWD errors
+          echo "--- Stopping production PM2 processes before file deployment ---"
+          pm2 stop flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker || echo "No production processes to stop"
+
           mkdir -p "$APP_PATH"
           mkdir -p "$APP_PATH/flyer-images/icons" "$APP_PATH/flyer-images/archive"
           rsync -avz --delete --exclude 'node_modules' --exclude '.git' --exclude 'dist' --exclude 'flyer-images' ./ "$APP_PATH/"
           rsync -avz dist/ "$APP_PATH"
           echo "Application deployment complete."
 
+      - name: Log Workflow Metadata
+        run: |
+          echo "=== WORKFLOW METADATA ==="
+          echo "Workflow file: deploy-to-prod.yml"
+          echo "Workflow file hash: $(sha256sum .gitea/workflows/deploy-to-prod.yml | cut -d' ' -f1)"
+          echo "Git commit: $(git rev-parse HEAD)"
+          echo "Git branch: $(git rev-parse --abbrev-ref HEAD)"
+          echo "Timestamp: $(date -u '+%Y-%m-%d %H:%M:%S UTC')"
+          echo "Actor: ${{ gitea.actor }}"
+          echo "=== END METADATA ==="
+
       - name: Install Backend Dependencies and Restart Production Server
         env:
           # --- Production Secrets Injection ---
@@ -165,9 +181,74 @@ jobs:
           cd /var/www/flyer-crawler.projectium.com
           npm install --omit=dev
 
-          # --- Cleanup Errored Processes ---
-          echo "Cleaning up errored or stopped PM2 processes..."
-          node -e "const exec = require('child_process').execSync; try { const list = JSON.parse(exec('pm2 jlist').toString()); list.forEach(p => { if (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') { console.log('Deleting ' + p.pm2_env.status + ' process: ' + p.name + ' (' + p.pm2_env.pm_id + ')'); try { exec('pm2 delete ' + p.pm2_env.pm_id); } catch(e) { console.error('Failed to delete ' + p.pm2_env.pm_id); } } }); } catch (e) { console.error('Error cleaning up processes:', e); }"
+          # === PRE-CLEANUP PM2 STATE LOGGING ===
+          echo "=== PRE-CLEANUP PM2 STATE ==="
+          pm2 jlist
+          echo "=== END PRE-CLEANUP STATE ==="
+
+          # --- Cleanup Errored Processes with Defense-in-Depth Safeguards ---
+          echo "Cleaning up errored or stopped PRODUCTION PM2 processes..."
+          node -e "
+            const exec = require('child_process').execSync;
+            try {
+              const list = JSON.parse(exec('pm2 jlist').toString());
+              const prodProcesses = ['flyer-crawler-api', 'flyer-crawler-worker', 'flyer-crawler-analytics-worker'];
+
+              // Filter for processes that match our criteria
+              const targetProcesses = list.filter(p =>
+                (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') &&
+                prodProcesses.includes(p.name)
+              );
+
+              // SAFEGUARD 1: Process count validation
+              const totalProcesses = list.length;
+              if (targetProcesses.length === totalProcesses && totalProcesses > 3) {
+                console.error('SAFETY ABORT: Filter would delete ALL processes!');
+                console.error('Total processes: ' + totalProcesses + ', Target processes: ' + targetProcesses.length);
+                console.error('This indicates a potential filter bug. Aborting cleanup.');
+                process.exit(1);
+              }
+
+              // SAFEGUARD 2: Explicit name verification
+              console.log('Found ' + targetProcesses.length + ' PRODUCTION processes to clean:');
+              targetProcesses.forEach(p => {
+                console.log('  - ' + p.name + ' (status: ' + p.pm2_env.status + ', pm_id: ' + p.pm2_env.pm_id + ')');
+              });
+
+              // Perform the cleanup
+              targetProcesses.forEach(p => {
+                console.log('Deleting ' + p.pm2_env.status + ' production process: ' + p.name + ' (' + p.pm2_env.pm_id + ')');
+                try {
+                  exec('pm2 delete ' + p.pm2_env.pm_id);
+                } catch(e) {
+                  console.error('Failed to delete ' + p.pm2_env.pm_id);
+                }
+              });
+
+              console.log('Production process cleanup complete.');
+            } catch (e) {
+              console.error('Error cleaning up processes:', e);
+            }
+          "
+
+          # === POST-CLEANUP VERIFICATION ===
+          echo "=== POST-CLEANUP VERIFICATION ==="
+          pm2 jlist | node -e "
+            try {
+              const list = JSON.parse(require('fs').readFileSync(0, 'utf-8'));
+              const prodProcesses = list.filter(p => p.name && p.name.startsWith('flyer-crawler-') && !p.name.endsWith('-test') && !p.name.endsWith('-dev'));
+              console.log('Production processes after cleanup:');
+              prodProcesses.forEach(p => {
+                console.log('  ' + p.name + ': ' + p.pm2_env.status);
+              });
+              if (prodProcesses.length === 0) {
+                console.log('  (no production processes currently running)');
+              }
+            } catch (e) {
+              console.error('Failed to parse PM2 output:', e.message);
+            }
+          "
+          echo "=== END POST-CLEANUP VERIFICATION ==="
 
           # --- Version Check Logic ---
           # Get the version from the newly deployed package.json

.gitea/workflows/deploy-to-test.yml

@@ -75,15 +75,45 @@ jobs:
           echo "--- Listing SRC Directory ---"
           ls -alF src
 
+      - name: Generate TSOA Spec and Routes
+        run: npm run tsoa:build
+
       - name: TypeScript Type-Check
         run: npm run type-check
 
-      - name: Prettier Check
-        run: npx prettier --check . || true
+      - name: Prettier Auto-Fix
+        run: |
+          echo "--- Running Prettier auto-fix for test/staging deployment ---"
+          # Auto-format all files
+          npx prettier --write .
+
+          # Check if any files were changed
+          if ! git diff --quiet; then
+            echo "📝 Prettier made formatting changes. Committing..."
+            git config --global user.name 'Gitea Actions'
+            git config --global user.email 'actions@gitea.projectium.com'
+            git add .
+            git commit -m "style: auto-format code via Prettier [skip ci]"
+            git push
+            echo "✅ Formatting changes committed and pushed."
+          else
+            echo "✅ No formatting changes needed."
+          fi
 
       - name: Lint Check
         run: npm run lint || true
 
+      - name: Log Workflow Metadata
+        run: |
+          echo "=== WORKFLOW METADATA ==="
+          echo "Workflow file: deploy-to-test.yml"
+          echo "Workflow file hash: $(sha256sum .gitea/workflows/deploy-to-test.yml | cut -d' ' -f1)"
+          echo "Git commit: $(git rev-parse HEAD)"
+          echo "Git branch: $(git rev-parse --abbrev-ref HEAD)"
+          echo "Timestamp: $(date -u '+%Y-%m-%d %H:%M:%S UTC')"
+          echo "Actor: ${{ gitea.actor }}"
+          echo "=== END METADATA ==="
+
       - name: Stop Test Server Before Tests
         # This is a critical step to ensure a clean test environment.
         # It stops the currently running pm2 process, freeing up port 3001 so that the
@@ -91,10 +121,74 @@ jobs:
         # '|| true' ensures the workflow doesn't fail if the process isn't running.
         run: |
           echo "--- Stopping and deleting all test processes ---"
+
+          # === PRE-CLEANUP PM2 STATE LOGGING ===
+          echo "=== PRE-CLEANUP PM2 STATE ==="
+          pm2 jlist || echo "No PM2 processes running"
+          echo "=== END PRE-CLEANUP STATE ==="
+
           # Use a script to parse pm2's JSON output and delete any process whose name ends with '-test'.
           # This is safer than 'pm2 delete all' and more robust than naming each process individually.
           # It prevents the accumulation of duplicate processes from previous test runs.
-          node -e "const exec = require('child_process').execSync; try { const list = JSON.parse(exec('pm2 jlist').toString()); list.forEach(p => { if (p.name && p.name.endsWith('-test')) { console.log('Deleting test process: ' + p.name + ' (' + p.pm2_env.pm_id + ')'); try { exec('pm2 delete ' + p.pm2_env.pm_id); } catch(e) { console.error('Failed to delete ' + p.pm2_env.pm_id, e.message); } } }); console.log('✅ Test process cleanup complete.'); } catch (e) { if (e.stdout.toString().includes('No process found')) { console.log('No PM2 processes running, cleanup not needed.'); } else { console.error('Error cleaning up test processes:', e.message); } }" || true
+          node -e "
+            const exec = require('child_process').execSync;
+            try {
+              const list = JSON.parse(exec('pm2 jlist').toString());
+
+              // Filter for test processes only
+              const targetProcesses = list.filter(p => p.name && p.name.endsWith('-test'));
+
+              // SAFEGUARD 1: Process count validation
+              const totalProcesses = list.length;
+              if (targetProcesses.length === totalProcesses && totalProcesses > 3) {
+                console.error('SAFETY ABORT: Filter would delete ALL processes!');
+                console.error('Total processes: ' + totalProcesses + ', Target processes: ' + targetProcesses.length);
+                console.error('This indicates a potential filter bug. Aborting cleanup.');
+                process.exit(1);
+              }
+
+              // SAFEGUARD 2: Explicit name verification
+              console.log('Found ' + targetProcesses.length + ' TEST processes to clean:');
+              targetProcesses.forEach(p => {
+                console.log('  - ' + p.name + ' (status: ' + p.pm2_env.status + ', pm_id: ' + p.pm2_env.pm_id + ')');
+              });
+
+              // Perform the cleanup
+              targetProcesses.forEach(p => {
+                console.log('Deleting test process: ' + p.name + ' (' + p.pm2_env.pm_id + ')');
+                try {
+                  exec('pm2 delete ' + p.pm2_env.pm_id);
+                } catch(e) {
+                  console.error('Failed to delete ' + p.pm2_env.pm_id, e.message);
+                }
+              });
+
+              console.log('Test process cleanup complete.');
+            } catch (e) {
+              if (e.stdout && e.stdout.toString().includes('No process found')) {
+                console.log('No PM2 processes running, cleanup not needed.');
+              } else {
+                console.error('Error cleaning up test processes:', e.message);
+              }
+            }
+          " || true
+
+          # === POST-CLEANUP VERIFICATION ===
+          echo "=== POST-CLEANUP VERIFICATION ==="
+          pm2 jlist 2>/dev/null | node -e "
+            try {
+              const list = JSON.parse(require('fs').readFileSync(0, 'utf-8'));
+              const testProcesses = list.filter(p => p.name && p.name.endsWith('-test'));
+              const prodProcesses = list.filter(p => p.name && p.name.startsWith('flyer-crawler-') && !p.name.endsWith('-test') && !p.name.endsWith('-dev'));
+              console.log('Test processes after cleanup: ' + testProcesses.length);
+              testProcesses.forEach(p => console.log('  ' + p.name + ': ' + p.pm2_env.status));
+              console.log('Production processes (should be untouched): ' + prodProcesses.length);
+              prodProcesses.forEach(p => console.log('  ' + p.name + ': ' + p.pm2_env.status));
+            } catch (e) {
+              console.log('No PM2 processes or failed to parse output');
+            }
+          " || true
+          echo "=== END POST-CLEANUP VERIFICATION ==="
 
       - name: Flush Redis Test Database Before Tests
         # CRITICAL: Clear Redis database 1 (test database) to remove stale BullMQ jobs.
@@ -412,6 +506,10 @@ jobs:
           echo "Deploying application files to /var/www/flyer-crawler-test.projectium.com..."
           APP_PATH="/var/www/flyer-crawler-test.projectium.com"
 
+          # CRITICAL: Stop PM2 processes BEFORE deploying files to prevent CWD errors
+          echo "--- Stopping test PM2 processes before file deployment ---"
+          pm2 stop flyer-crawler-api-test flyer-crawler-worker-test flyer-crawler-analytics-worker-test || echo "No test processes to stop"
+
           # Ensure the destination directory exists
           mkdir -p "$APP_PATH"
           mkdir -p "$APP_PATH/flyer-images/icons" "$APP_PATH/flyer-images/archive" # Ensure all required subdirectories exist
@@ -489,9 +587,74 @@ jobs:
           cd /var/www/flyer-crawler-test.projectium.com
           npm install --omit=dev
 
-          # --- Cleanup Errored Processes ---
-          echo "Cleaning up errored or stopped PM2 processes..."
-          node -e "const exec = require('child_process').execSync; try { const list = JSON.parse(exec('pm2 jlist').toString()); list.forEach(p => { if (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') { console.log('Deleting ' + p.pm2_env.status + ' process: ' + p.name + ' (' + p.pm2_env.pm_id + ')'); try { exec('pm2 delete ' + p.pm2_env.pm_id); } catch(e) { console.error('Failed to delete ' + p.pm2_env.pm_id); } } }); } catch (e) { console.error('Error cleaning up processes:', e); }"
+          # === PRE-CLEANUP PM2 STATE LOGGING ===
+          echo "=== PRE-CLEANUP PM2 STATE ==="
+          pm2 jlist
+          echo "=== END PRE-CLEANUP STATE ==="
+
+          # --- Cleanup Errored Processes with Defense-in-Depth Safeguards ---
+          echo "Cleaning up errored or stopped TEST PM2 processes..."
+          node -e "
+            const exec = require('child_process').execSync;
+            try {
+              const list = JSON.parse(exec('pm2 jlist').toString());
+
+              // Filter for errored/stopped test processes only
+              const targetProcesses = list.filter(p =>
+                (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') &&
+                p.name && p.name.endsWith('-test')
+              );
+
+              // SAFEGUARD 1: Process count validation
+              const totalProcesses = list.length;
+              if (targetProcesses.length === totalProcesses && totalProcesses > 3) {
+                console.error('SAFETY ABORT: Filter would delete ALL processes!');
+                console.error('Total processes: ' + totalProcesses + ', Target processes: ' + targetProcesses.length);
+                console.error('This indicates a potential filter bug. Aborting cleanup.');
+                process.exit(1);
+              }
+
+              // SAFEGUARD 2: Explicit name verification
+              console.log('Found ' + targetProcesses.length + ' errored/stopped TEST processes to clean:');
+              targetProcesses.forEach(p => {
+                console.log('  - ' + p.name + ' (status: ' + p.pm2_env.status + ', pm_id: ' + p.pm2_env.pm_id + ')');
+              });
+
+              // Perform the cleanup
+              targetProcesses.forEach(p => {
+                console.log('Deleting ' + p.pm2_env.status + ' test process: ' + p.name + ' (' + p.pm2_env.pm_id + ')');
+                try {
+                  exec('pm2 delete ' + p.pm2_env.pm_id);
+                } catch(e) {
+                  console.error('Failed to delete ' + p.pm2_env.pm_id);
+                }
+              });
+
+              console.log('Test process cleanup complete.');
+            } catch (e) {
+              console.error('Error cleaning up processes:', e);
+            }
+          "
+
+          # === POST-CLEANUP VERIFICATION ===
+          echo "=== POST-CLEANUP VERIFICATION ==="
+          pm2 jlist | node -e "
+            try {
+              const list = JSON.parse(require('fs').readFileSync(0, 'utf-8'));
+              const testProcesses = list.filter(p => p.name && p.name.endsWith('-test'));
+              const prodProcesses = list.filter(p => p.name && p.name.startsWith('flyer-crawler-') && !p.name.endsWith('-test') && !p.name.endsWith('-dev'));
+              console.log('Test processes after cleanup:');
+              testProcesses.forEach(p => console.log('  ' + p.name + ': ' + p.pm2_env.status));
+              if (testProcesses.length === 0) {
+                console.log('  (no test processes currently running)');
+              }
+              console.log('Production processes (should be untouched): ' + prodProcesses.length);
+              prodProcesses.forEach(p => console.log('  ' + p.name + ': ' + p.pm2_env.status));
+            } catch (e) {
+              console.error('Failed to parse PM2 output:', e.message);
+            }
+          "
+          echo "=== END POST-CLEANUP VERIFICATION ==="
 
           # Use `startOrReload` with the TEST ecosystem file. This starts test-specific processes
           # (flyer-crawler-api-test, flyer-crawler-worker-test, flyer-crawler-analytics-worker-test)

.gitea/workflows/manual-db-restore.yml

@@ -56,9 +56,9 @@ jobs:
 
       - name: Step 1 - Stop Application Server
         run: |
-          echo "Stopping all PM2 processes to release database connections..."
-          pm2 stop all || echo "PM2 processes were not running."
-          echo "✅ Application server stopped."
+          echo "Stopping PRODUCTION PM2 processes to release database connections..."
+          pm2 stop flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker || echo "Production PM2 processes were not running."
+          echo "✅ Production application server stopped."
 
       - name: Step 2 - Drop and Recreate Database
         run: |

.gitea/workflows/manual-deploy-major.yml

@@ -109,6 +109,17 @@ jobs:
           rsync -avz dist/ "$APP_PATH"
           echo "Application deployment complete."
 
+      - name: Log Workflow Metadata
+        run: |
+          echo "=== WORKFLOW METADATA ==="
+          echo "Workflow file: manual-deploy-major.yml"
+          echo "Workflow file hash: $(sha256sum .gitea/workflows/manual-deploy-major.yml | cut -d' ' -f1)"
+          echo "Git commit: $(git rev-parse HEAD)"
+          echo "Git branch: $(git rev-parse --abbrev-ref HEAD)"
+          echo "Timestamp: $(date -u '+%Y-%m-%d %H:%M:%S UTC')"
+          echo "Actor: ${{ gitea.actor }}"
+          echo "=== END METADATA ==="
+
       - name: Install Backend Dependencies and Restart Production Server
         env:
           # --- Production Secrets Injection ---
@@ -138,9 +149,74 @@ jobs:
           cd /var/www/flyer-crawler.projectium.com
           npm install --omit=dev
 
-          # --- Cleanup Errored Processes ---
-          echo "Cleaning up errored or stopped PM2 processes..."
-          node -e "const exec = require('child_process').execSync; try { const list = JSON.parse(exec('pm2 jlist').toString()); list.forEach(p => { if (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') { console.log('Deleting ' + p.pm2_env.status + ' process: ' + p.name + ' (' + p.pm2_env.pm_id + ')'); try { exec('pm2 delete ' + p.pm2_env.pm_id); } catch(e) { console.error('Failed to delete ' + p.pm2_env.pm_id); } } }); } catch (e) { console.error('Error cleaning up processes:', e); }"
+          # === PRE-CLEANUP PM2 STATE LOGGING ===
+          echo "=== PRE-CLEANUP PM2 STATE ==="
+          pm2 jlist
+          echo "=== END PRE-CLEANUP STATE ==="
+
+          # --- Cleanup Errored Processes with Defense-in-Depth Safeguards ---
+          echo "Cleaning up errored or stopped PRODUCTION PM2 processes..."
+          node -e "
+            const exec = require('child_process').execSync;
+            try {
+              const list = JSON.parse(exec('pm2 jlist').toString());
+              const prodProcesses = ['flyer-crawler-api', 'flyer-crawler-worker', 'flyer-crawler-analytics-worker'];
+
+              // Filter for processes that match our criteria
+              const targetProcesses = list.filter(p =>
+                (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') &&
+                prodProcesses.includes(p.name)
+              );
+
+              // SAFEGUARD 1: Process count validation
+              const totalProcesses = list.length;
+              if (targetProcesses.length === totalProcesses && totalProcesses > 3) {
+                console.error('SAFETY ABORT: Filter would delete ALL processes!');
+                console.error('Total processes: ' + totalProcesses + ', Target processes: ' + targetProcesses.length);
+                console.error('This indicates a potential filter bug. Aborting cleanup.');
+                process.exit(1);
+              }
+
+              // SAFEGUARD 2: Explicit name verification
+              console.log('Found ' + targetProcesses.length + ' PRODUCTION processes to clean:');
+              targetProcesses.forEach(p => {
+                console.log('  - ' + p.name + ' (status: ' + p.pm2_env.status + ', pm_id: ' + p.pm2_env.pm_id + ')');
+              });
+
+              // Perform the cleanup
+              targetProcesses.forEach(p => {
+                console.log('Deleting ' + p.pm2_env.status + ' production process: ' + p.name + ' (' + p.pm2_env.pm_id + ')');
+                try {
+                  exec('pm2 delete ' + p.pm2_env.pm_id);
+                } catch(e) {
+                  console.error('Failed to delete ' + p.pm2_env.pm_id);
+                }
+              });
+
+              console.log('Production process cleanup complete.');
+            } catch (e) {
+              console.error('Error cleaning up processes:', e);
+            }
+          "
+
+          # === POST-CLEANUP VERIFICATION ===
+          echo "=== POST-CLEANUP VERIFICATION ==="
+          pm2 jlist | node -e "
+            try {
+              const list = JSON.parse(require('fs').readFileSync(0, 'utf-8'));
+              const prodProcesses = list.filter(p => p.name && p.name.startsWith('flyer-crawler-') && !p.name.endsWith('-test') && !p.name.endsWith('-dev'));
+              console.log('Production processes after cleanup:');
+              prodProcesses.forEach(p => {
+                console.log('  ' + p.name + ': ' + p.pm2_env.status);
+              });
+              if (prodProcesses.length === 0) {
+                console.log('  (no production processes currently running)');
+              }
+            } catch (e) {
+              console.error('Failed to parse PM2 output:', e.message);
+            }
+          "
+          echo "=== END POST-CLEANUP VERIFICATION ==="
 
           # --- Version Check Logic ---
           # Get the version from the newly deployed package.json

.gitea/workflows/restart-pm2.yml

@@ -0,0 +1,86 @@
+# .gitea/workflows/restart-pm2.yml
+#
+# Manual workflow to restart PM2 processes and verify their status.
+# Useful for recovering from PM2 daemon crashes or process issues.
+name: Restart PM2 Processes
+
+on:
+  workflow_dispatch:
+    inputs:
+      environment:
+        description: 'Environment to restart (test, production, or both)'
+        required: true
+        default: 'test'
+        type: choice
+        options:
+          - test
+          - production
+          - both
+
+jobs:
+  restart-pm2:
+    runs-on: projectium.com
+
+    steps:
+      - name: Validate Environment Input
+        run: |
+          echo "Restarting PM2 processes for environment: ${{ gitea.event.inputs.environment }}"
+
+      - name: Restart Test Environment
+        if: gitea.event.inputs.environment == 'test' || gitea.event.inputs.environment == 'both'
+        run: |
+          echo "=== RESTARTING TEST ENVIRONMENT ==="
+          cd /var/www/flyer-crawler-test.projectium.com
+
+          echo "--- Current PM2 State (Before Restart) ---"
+          pm2 list
+
+          echo "--- Restarting Test Processes ---"
+          pm2 restart flyer-crawler-api-test flyer-crawler-worker-test flyer-crawler-analytics-worker-test || {
+            echo "Restart failed, attempting to start processes..."
+            pm2 start ecosystem-test.config.cjs
+          }
+
+          echo "--- Saving PM2 Process List ---"
+          pm2 save
+
+          echo "--- Waiting 3 seconds for processes to stabilize ---"
+          sleep 3
+
+          echo "=== TEST ENVIRONMENT STATUS ==="
+          pm2 ps
+
+      - name: Restart Production Environment
+        if: gitea.event.inputs.environment == 'production' || gitea.event.inputs.environment == 'both'
+        run: |
+          echo "=== RESTARTING PRODUCTION ENVIRONMENT ==="
+          cd /var/www/flyer-crawler.projectium.com
+
+          echo "--- Current PM2 State (Before Restart) ---"
+          pm2 list
+
+          echo "--- Restarting Production Processes ---"
+          pm2 restart flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker || {
+            echo "Restart failed, attempting to start processes..."
+            pm2 start ecosystem.config.cjs
+          }
+
+          echo "--- Saving PM2 Process List ---"
+          pm2 save
+
+          echo "--- Waiting 3 seconds for processes to stabilize ---"
+          sleep 3
+
+          echo "=== PRODUCTION ENVIRONMENT STATUS ==="
+          pm2 ps
+
+      - name: Final PM2 Status (All Processes)
+        run: |
+          echo "========================================="
+          echo "FINAL PM2 STATUS - ALL PROCESSES"
+          echo "========================================="
+          pm2 ps
+
+          echo ""
+          echo "--- PM2 Logs (Last 20 Lines) ---"
+          pm2 logs --lines 20 --nostream || echo "No logs available"

.gitignore

@@ -14,6 +14,10 @@ dist-ssr
 .env
 *.tsbuildinfo
 
+# tsoa generated files (regenerated on build)
+src/routes/tsoa-generated.ts
+src/config/tsoa-spec.json
+
 # Test coverage
 coverage
 .nyc_output

.nvmrc

@@ -0,0 +1 @@
+22

CLAUDE.md

@@ -45,6 +45,50 @@ Out-of-sync = test failures.
 - Maximum 3 fix commands at a time (errors may cascade)
 - Always verify after fixes complete
 
+### PM2 Process Isolation (Production/Test Servers)
+
+**CRITICAL**: Production and test environments share the same PM2 daemon on the server.
+
+**See also**: [PM2 Process Isolation Incidents](#pm2-process-isolation-incidents) for past incidents and response procedures.
+
+| Environment | Processes                                                                                    | Config File                 |
+| ----------- | -------------------------------------------------------------------------------------------- | --------------------------- |
+| Production  | `flyer-crawler-api`, `flyer-crawler-worker`, `flyer-crawler-analytics-worker`                | `ecosystem.config.cjs`      |
+| Test        | `flyer-crawler-api-test`, `flyer-crawler-worker-test`, `flyer-crawler-analytics-worker-test` | `ecosystem-test.config.cjs` |
+| Development | `flyer-crawler-api-dev`, `flyer-crawler-worker-dev`, `flyer-crawler-vite-dev`                | `ecosystem.dev.config.cjs`  |
+
+**Deployment Scripts MUST:**
+
+- ✅ Filter PM2 commands by exact process names or name patterns (e.g., `endsWith('-test')`)
+- ❌ NEVER use `pm2 stop all`, `pm2 delete all`, or `pm2 restart all`
+- ❌ NEVER delete/stop processes based solely on status without name filtering
+- ✅ Always verify process names match the target environment before any operation
+
+**Examples:**
+
+```bash
+# ✅ CORRECT - Production cleanup (filter by name)
+pm2 stop flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker
+
+# ✅ CORRECT - Test cleanup (filter by name pattern)
+# Only delete test processes that are errored/stopped
+list.forEach(p => {
+  if ((p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') &&
+      p.name && p.name.endsWith('-test')) {
+    exec('pm2 delete ' + p.pm2_env.pm_id);
+  }
+});
+
+# ❌ WRONG - Affects all environments
+pm2 stop all
+pm2 delete all
+
+# ❌ WRONG - No name filtering (could delete test processes during prod deploy)
+if (p.pm2_env.status === 'errored') {
+  exec('pm2 delete ' + p.pm2_env.pm_id);
+}
+```
+
 ### Communication Style
 
 Ask before assuming. Never assume:
@@ -246,6 +290,39 @@ Common issues with solutions:
 
 **Full Details**: See test issues section at end of this document or [docs/development/TESTING.md](docs/development/TESTING.md)
 
+### PM2 Process Isolation Incidents
+
+**CRITICAL**: PM2 process cleanup scripts can affect all PM2 processes if not properly filtered.
+
+**Incident**: 2026-02-17 Production Deployment (v0.15.0)
+
+- **Impact**: ALL PM2 processes on production server were killed
+- **Affected**: stock-alert.projectium.com and all other PM2-managed applications
+- **Root Cause**: Under investigation (see [incident report](docs/operations/INCIDENT-2026-02-17-PM2-PROCESS-KILL.md))
+- **Status**: Safeguards added to prevent recurrence
+
+**Prevention Measures** (implemented):
+
+1. Name-based filtering (exact match or pattern-based)
+2. Pre-cleanup process list logging
+3. Process count validation (abort if filtering all processes)
+4. Explicit name verification in logs
+5. Post-cleanup verification
+6. Workflow version hash logging
+
+**If PM2 Incident Occurs**:
+
+- **DO NOT** attempt another deployment immediately
+- Follow the [PM2 Incident Response Runbook](docs/operations/PM2-INCIDENT-RESPONSE.md)
+- Manually restore affected processes
+- Investigate workflow execution logs before next deployment
+
+**Related Documentation**:
+
+- [PM2 Process Isolation Requirements](#pm2-process-isolation-productiontest-servers) (existing section)
+- [Incident Report 2026-02-17](docs/operations/INCIDENT-2026-02-17-PM2-PROCESS-KILL.md)
+- [PM2 Incident Response Runbook](docs/operations/PM2-INCIDENT-RESPONSE.md)
+
 ### Git Bash Path Conversion (Windows)
 
 Git Bash auto-converts Unix paths, breaking container commands.

README.md

@@ -139,3 +139,5 @@ See [INSTALL.md](INSTALL.md) for the complete list.
 ## License
 
 [Add license information here]
+
+annoyed

docs/MANUAL_TESTING_PLAN.md

@@ -56,7 +56,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -90,7 +90,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -114,7 +114,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -138,7 +138,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -161,7 +161,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -189,7 +189,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -211,7 +211,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -234,7 +234,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -259,7 +259,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -284,7 +284,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -307,7 +307,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -330,7 +330,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -355,7 +355,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -379,7 +379,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -425,7 +425,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -448,7 +448,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -476,7 +476,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -502,7 +502,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -529,7 +529,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -555,7 +555,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -579,7 +579,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -612,7 +612,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -637,7 +637,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -656,7 +656,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -681,7 +681,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -705,7 +705,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -757,7 +757,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Measurements**: **********************\_\_\_**********************
+**Measurements**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -765,7 +765,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 ### Test 8.1: Chrome/Edge
 
-**Browser Version**: ******\_\_\_******
+**Browser Version**: **\*\***\_\_\_**\*\***
 
 **Tests to Run**:
 
@@ -775,13 +775,13 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
 ### Test 8.2: Firefox
 
-**Browser Version**: ******\_\_\_******
+**Browser Version**: **\*\***\_\_\_**\*\***
 
 **Tests to Run**:
 
@@ -791,13 +791,13 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
 ### Test 8.3: Safari (macOS/iOS)
 
-**Browser Version**: ******\_\_\_******
+**Browser Version**: **\*\***\_\_\_**\*\***
 
 **Tests to Run**:
 
@@ -807,7 +807,7 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 **Pass/Fail**: [ ]
 
-**Notes**: **********************\_\_\_**********************
+**Notes**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 
 ---
 
@@ -849,8 +849,8 @@ podman exec -it flyer-crawler-dev npm run dev:container
 
 ## Sign-Off
 
-**Tester Name**: **********************\_\_\_**********************
-**Date Completed**: **********************\_\_\_**********************
+**Tester Name**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
+**Date Completed**: \***\*\*\*\*\***\*\*\***\*\*\*\*\***\_\_\_\***\*\*\*\*\***\*\*\***\*\*\*\*\***
 **Overall Status**: [ ] PASS [ ] PASS WITH ISSUES [ ] FAIL
 
 **Ready for Production**: [ ] YES [ ] NO [ ] WITH FIXES

docs/QUICK_TEST_CHECKLIST.md

@@ -208,7 +208,7 @@ Press F12 or Ctrl+Shift+I
 
 **Result**: [ ] PASS [ ] FAIL
 
-**Errors found**: ******************\_\_\_******************
+**Errors found**: **\*\*\*\***\*\***\*\*\*\***\_\_\_**\*\*\*\***\*\***\*\*\*\***
 
 ---
 
@@ -224,7 +224,7 @@ Check for:
 
 **Result**: [ ] PASS [ ] FAIL
 
-**Issues found**: ******************\_\_\_******************
+**Issues found**: **\*\*\*\***\*\***\*\*\*\***\_\_\_**\*\*\*\***\*\***\*\*\*\***
 
 ---
 
@@ -272,4 +272,4 @@ Check for:
 2. ***
 3. ***
 
-**Sign-off**: ********\_\_\_******** **Date**: ****\_\_\_****
+**Sign-off**: **\*\*\*\***\_\_\_**\*\*\*\*** **Date**: \***\*\_\_\_\*\***

docs/README.md

@@ -47,6 +47,14 @@ Production operations and deployment:
 - [Logstash Troubleshooting](operations/LOGSTASH-TROUBLESHOOTING.md) - Debugging logs
 - [Monitoring](operations/MONITORING.md) - Bugsink, health checks, observability
 
+**Incident Response**:
+
+- [PM2 Incident Response Runbook](operations/PM2-INCIDENT-RESPONSE.md) - Step-by-step procedures for PM2 incidents
+
+**Incident Reports**:
+
+- [2026-02-17 PM2 Process Kill](operations/INCIDENT-2026-02-17-PM2-PROCESS-KILL.md) - ALL PM2 processes killed during v0.15.0 deployment (Mitigated)
+
 **NGINX Reference Configs** (in repository root):
 
 - `etc-nginx-sites-available-flyer-crawler.projectium.com` - Production server config

docs/adr/0009-caching-strategy-for-read-heavy-operations.md

@@ -39,15 +39,15 @@ All cache operations are fail-safe - cache failures do not break the application
 
 Different data types use different TTL values based on volatility:
 
-| Data Type           | TTL       | Rationale                              |
-| ------------------- | --------- | -------------------------------------- |
-| Brands/Stores       | 1 hour    | Rarely changes, safe to cache longer   |
-| Flyer lists         | 5 minutes | Changes when new flyers are added      |
-| Individual flyers   | 10 minutes| Stable once created                    |
-| Flyer items         | 10 minutes| Stable once created                    |
-| Statistics          | 5 minutes | Can be slightly stale                  |
-| Frequent sales      | 15 minutes| Aggregated data, updated periodically  |
-| Categories          | 1 hour    | Rarely changes                         |
+| Data Type         | TTL        | Rationale                             |
+| ----------------- | ---------- | ------------------------------------- |
+| Brands/Stores     | 1 hour     | Rarely changes, safe to cache longer  |
+| Flyer lists       | 5 minutes  | Changes when new flyers are added     |
+| Individual flyers | 10 minutes | Stable once created                   |
+| Flyer items       | 10 minutes | Stable once created                   |
+| Statistics        | 5 minutes  | Can be slightly stale                 |
+| Frequent sales    | 15 minutes | Aggregated data, updated periodically |
+| Categories        | 1 hour     | Rarely changes                        |
 
 ### Cache Key Strategy
 
@@ -64,11 +64,11 @@ Cache keys follow a consistent prefix pattern for pattern-based invalidation:
 
 The following repository methods implement server-side caching:
 
-| Method | Cache Key Pattern | TTL |
-| ------ | ----------------- | --- |
-| `FlyerRepository.getAllBrands()` | `cache:brands` | 1 hour |
-| `FlyerRepository.getFlyers()` | `cache:flyers:{limit}:{offset}` | 5 minutes |
-| `FlyerRepository.getFlyerItems()` | `cache:flyer-items:{flyerId}` | 10 minutes |
+| Method                            | Cache Key Pattern               | TTL        |
+| --------------------------------- | ------------------------------- | ---------- |
+| `FlyerRepository.getAllBrands()`  | `cache:brands`                  | 1 hour     |
+| `FlyerRepository.getFlyers()`     | `cache:flyers:{limit}:{offset}` | 5 minutes  |
+| `FlyerRepository.getFlyerItems()` | `cache:flyer-items:{flyerId}`   | 10 minutes |
 
 ### Cache Invalidation
 
@@ -86,14 +86,14 @@ The following repository methods implement server-side caching:
 
 TanStack React Query provides client-side caching with configurable stale times:
 
-| Query Type        | Stale Time  |
-| ----------------- | ----------- |
-| Categories        | 1 hour      |
-| Master Items      | 10 minutes  |
-| Flyer Items       | 5 minutes   |
-| Flyers            | 2 minutes   |
-| Shopping Lists    | 1 minute    |
-| Activity Log      | 30 seconds  |
+| Query Type     | Stale Time |
+| -------------- | ---------- |
+| Categories     | 1 hour     |
+| Master Items   | 10 minutes |
+| Flyer Items    | 5 minutes  |
+| Flyers         | 2 minutes  |
+| Shopping Lists | 1 minute   |
+| Activity Log   | 30 seconds |
 
 ### Multi-Layer Cache Architecture
 

docs/adr/0012-frontend-component-library-and-design-system.md

@@ -80,13 +80,13 @@ src/
 
 **Common Utility Patterns**:
 
-| Pattern | Classes |
-| ------- | ------- |
-| Card container | `bg-white dark:bg-gray-800 rounded-lg shadow-md p-6` |
-| Primary button | `bg-brand-primary hover:bg-brand-dark text-white rounded-lg px-4 py-2` |
-| Secondary button | `bg-gray-100 dark:bg-gray-700 text-gray-700 dark:text-gray-200` |
-| Input field | `border border-gray-300 dark:border-gray-600 rounded-md px-3 py-2` |
-| Focus ring | `focus:outline-none focus:ring-2 focus:ring-brand-primary` |
+| Pattern          | Classes                                                                |
+| ---------------- | ---------------------------------------------------------------------- |
+| Card container   | `bg-white dark:bg-gray-800 rounded-lg shadow-md p-6`                   |
+| Primary button   | `bg-brand-primary hover:bg-brand-dark text-white rounded-lg px-4 py-2` |
+| Secondary button | `bg-gray-100 dark:bg-gray-700 text-gray-700 dark:text-gray-200`        |
+| Input field      | `border border-gray-300 dark:border-gray-600 rounded-md px-3 py-2`     |
+| Focus ring       | `focus:outline-none focus:ring-2 focus:ring-brand-primary`             |
 
 ### Color System
 
@@ -187,13 +187,13 @@ export const CheckCircleIcon: React.FC<IconProps> = ({ title, ...props }) => (
 
 **Context Providers** (see ADR-005):
 
-| Provider | Purpose |
-| -------- | ------- |
-| `AuthProvider` | Authentication state |
-| `ModalProvider` | Modal open/close state |
-| `FlyersProvider` | Flyer data |
-| `MasterItemsProvider` | Grocery items |
-| `UserDataProvider` | User-specific data |
+| Provider              | Purpose                |
+| --------------------- | ---------------------- |
+| `AuthProvider`        | Authentication state   |
+| `ModalProvider`       | Modal open/close state |
+| `FlyersProvider`      | Flyer data             |
+| `MasterItemsProvider` | Grocery items          |
+| `UserDataProvider`    | User-specific data     |
 
 **Provider Hierarchy** in `AppProviders.tsx`:
 

docs/adr/0016-api-security-hardening.md

@@ -45,15 +45,15 @@ Using **helmet v8.x** configured in `server.ts` as the first middleware after ap
 
 **Security Headers Applied**:
 
-| Header | Configuration | Purpose |
-| ------ | ------------- | ------- |
-| Content-Security-Policy | Custom directives | Prevents XSS, code injection |
-| Strict-Transport-Security | 1 year, includeSubDomains, preload | Forces HTTPS connections |
-| X-Content-Type-Options | nosniff | Prevents MIME type sniffing |
-| X-Frame-Options | DENY | Prevents clickjacking |
-| X-XSS-Protection | 0 (disabled) | Deprecated, CSP preferred |
-| Referrer-Policy | strict-origin-when-cross-origin | Controls referrer information |
-| Cross-Origin-Resource-Policy | cross-origin | Allows external resource loading |
+| Header                       | Configuration                      | Purpose                          |
+| ---------------------------- | ---------------------------------- | -------------------------------- |
+| Content-Security-Policy      | Custom directives                  | Prevents XSS, code injection     |
+| Strict-Transport-Security    | 1 year, includeSubDomains, preload | Forces HTTPS connections         |
+| X-Content-Type-Options       | nosniff                            | Prevents MIME type sniffing      |
+| X-Frame-Options              | DENY                               | Prevents clickjacking            |
+| X-XSS-Protection             | 0 (disabled)                       | Deprecated, CSP preferred        |
+| Referrer-Policy              | strict-origin-when-cross-origin    | Controls referrer information    |
+| Cross-Origin-Resource-Policy | cross-origin                       | Allows external resource loading |
 
 **Content Security Policy Directives**:
 
@@ -87,35 +87,35 @@ Using **express-rate-limit v8.2.1** with a centralized configuration in `src/con
 
 ```typescript
 const standardConfig = {
-  standardHeaders: true,  // Sends RateLimit-* headers
+  standardHeaders: true, // Sends RateLimit-* headers
   legacyHeaders: false,
-  skip: shouldSkipRateLimit,  // Disabled in test environment
+  skip: shouldSkipRateLimit, // Disabled in test environment
 };
 ```
 
 **Rate Limiters by Category**:
 
-| Category | Limiter | Window | Max Requests |
-| -------- | ------- | ------ | ------------ |
-| **Authentication** | loginLimiter | 15 min | 5 |
-| | registerLimiter | 1 hour | 5 |
-| | forgotPasswordLimiter | 15 min | 5 |
-| | resetPasswordLimiter | 15 min | 10 |
-| | refreshTokenLimiter | 15 min | 20 |
-| | logoutLimiter | 15 min | 10 |
-| **Public/User Read** | publicReadLimiter | 15 min | 100 |
-| | userReadLimiter | 15 min | 100 |
-| | userUpdateLimiter | 15 min | 100 |
-| **Sensitive Operations** | userSensitiveUpdateLimiter | 1 hour | 5 |
-| | adminTriggerLimiter | 15 min | 30 |
-| **AI/Costly** | aiGenerationLimiter | 15 min | 20 |
-| | geocodeLimiter | 1 hour | 100 |
-| | priceHistoryLimiter | 15 min | 50 |
-| **Uploads** | adminUploadLimiter | 15 min | 20 |
-| | aiUploadLimiter | 15 min | 10 |
-| | batchLimiter | 15 min | 50 |
-| **Tracking** | trackingLimiter | 15 min | 200 |
-| | reactionToggleLimiter | 15 min | 150 |
+| Category                 | Limiter                    | Window | Max Requests |
+| ------------------------ | -------------------------- | ------ | ------------ |
+| **Authentication**       | loginLimiter               | 15 min | 5            |
+|                          | registerLimiter            | 1 hour | 5            |
+|                          | forgotPasswordLimiter      | 15 min | 5            |
+|                          | resetPasswordLimiter       | 15 min | 10           |
+|                          | refreshTokenLimiter        | 15 min | 20           |
+|                          | logoutLimiter              | 15 min | 10           |
+| **Public/User Read**     | publicReadLimiter          | 15 min | 100          |
+|                          | userReadLimiter            | 15 min | 100          |
+|                          | userUpdateLimiter          | 15 min | 100          |
+| **Sensitive Operations** | userSensitiveUpdateLimiter | 1 hour | 5            |
+|                          | adminTriggerLimiter        | 15 min | 30           |
+| **AI/Costly**            | aiGenerationLimiter        | 15 min | 20           |
+|                          | geocodeLimiter             | 1 hour | 100          |
+|                          | priceHistoryLimiter        | 15 min | 50           |
+| **Uploads**              | adminUploadLimiter         | 15 min | 20           |
+|                          | aiUploadLimiter            | 15 min | 10           |
+|                          | batchLimiter               | 15 min | 50           |
+| **Tracking**             | trackingLimiter            | 15 min | 200          |
+|                          | reactionToggleLimiter      | 15 min | 150          |
 
 **Test Environment Handling**:
 
@@ -140,7 +140,7 @@ sanitizeFilename(filename: string): string
 
 **Multer Configuration** (`src/middleware/multer.middleware.ts`):
 
-- MIME type validation via `imageFileFilter` (only image/* allowed)
+- MIME type validation via `imageFileFilter` (only image/\* allowed)
 - File size limits (2MB for logos, configurable per upload type)
 - Unique filenames using timestamps + random suffixes
 - User-scoped storage paths
@@ -203,10 +203,12 @@ Per-request structured logging (ADR-004):
 
    ```typescript
    import cors from 'cors';
-   app.use(cors({
-     origin: process.env.ALLOWED_ORIGINS?.split(',') || 'http://localhost:3000',
-     credentials: true,
-   }));
+   app.use(
+     cors({
+       origin: process.env.ALLOWED_ORIGINS?.split(',') || 'http://localhost:3000',
+       credentials: true,
+     }),
+   );
    ```
 
 2. **Redis-backed rate limiting**: For distributed deployments, use `rate-limit-redis` store

docs/adr/0018-api-documentation-strategy.md

@@ -2,9 +2,11 @@
 
 **Date**: 2025-12-12
 
-**Status**: Accepted
+**Status**: Superseded
 
-**Implemented**: 2026-01-11
+**Superseded By**: This ADR was updated in February 2026 to reflect the migration from swagger-jsdoc to tsoa. The original approach using JSDoc annotations has been replaced with a decorator-based controller pattern.
+
+**Implemented**: 2026-02-12
 
 ## Context
 
@@ -16,139 +18,296 @@ Key requirements:
 2. **Code-Documentation Sync**: Documentation should stay in sync with the actual code to prevent drift.
 3. **Low Maintenance Overhead**: The documentation approach should be "fast and lite" - minimal additional work for developers.
 4. **Security**: Documentation should not expose sensitive information in production environments.
+5. **Type Safety**: Documentation should be derived from TypeScript types to ensure accuracy.
+
+### Why We Migrated from swagger-jsdoc to tsoa
+
+The original implementation used `swagger-jsdoc` to generate OpenAPI specs from JSDoc comments. This approach had several limitations:
+
+| Issue                                   | Impact                                       |
+| --------------------------------------- | -------------------------------------------- |
+| `swagger-jsdoc` unmaintained since 2022 | Security and compatibility risks             |
+| JSDoc duplication with TypeScript types | Maintenance burden, potential for drift      |
+| No runtime validation from schema       | Validation logic separate from documentation |
+| Manual type definitions in comments     | Error-prone, no compiler verification        |
 
 ## Decision
 
-We will adopt **OpenAPI 3.0 (Swagger)** for API documentation using the following approach:
+We adopt **tsoa** for API documentation using a decorator-based controller pattern:
 
-1. **JSDoc Annotations**: Use `swagger-jsdoc` to generate OpenAPI specs from JSDoc comments in route files.
-2. **Swagger UI**: Use `swagger-ui-express` to serve interactive documentation at `/docs/api-docs`.
-3. **Environment Restriction**: Only expose the Swagger UI in development and test environments, not production.
-4. **Incremental Adoption**: Start with key public routes and progressively add annotations to all endpoints.
+1. **Controller Classes**: Use tsoa decorators (`@Route`, `@Get`, `@Post`, `@Security`, etc.) on controller classes.
+2. **TypeScript-First**: OpenAPI specs are generated directly from TypeScript interfaces and types.
+3. **Swagger UI**: Continue using `swagger-ui-express` to serve interactive documentation at `/docs/api-docs`.
+4. **Environment Restriction**: Only expose the Swagger UI in development and test environments, not production.
+5. **BaseController Pattern**: All controllers extend a base class providing response formatting utilities.
 
 ### Tooling Selection
 
-| Tool                 | Purpose                                        |
-| -------------------- | ---------------------------------------------- |
-| `swagger-jsdoc`      | Generates OpenAPI 3.0 spec from JSDoc comments |
-| `swagger-ui-express` | Serves interactive Swagger UI                  |
+| Tool                 | Purpose                                               |
+| -------------------- | ----------------------------------------------------- |
+| `tsoa` (6.6.0)       | Generates OpenAPI 3.0 spec from decorators and routes |
+| `swagger-ui-express` | Serves interactive Swagger UI                         |
 
-**Why JSDoc over separate schema files?**
+**Why tsoa over swagger-jsdoc?**
 
-- Documentation lives with the code, reducing drift
-- No separate files to maintain
-- Developers see documentation when editing routes
-- Lower learning curve for the team
+- **Type-safe contracts**: Decorators derive types directly from TypeScript, eliminating duplicate definitions
+- **Active maintenance**: tsoa has an active community and regular releases
+- **Route generation**: tsoa generates Express routes automatically, reducing boilerplate
+- **Validation integration**: Request body types serve as validation contracts
+- **Reduced duplication**: No more parallel JSDoc + TypeScript type definitions
 
 ## Implementation Details
 
-### OpenAPI Configuration
+### tsoa Configuration
 
-Located in `src/config/swagger.ts`:
+Located in `tsoa.json`:
 
-```typescript
-import swaggerJsdoc from 'swagger-jsdoc';
-
-const options: swaggerJsdoc.Options = {
-  definition: {
-    openapi: '3.0.0',
-    info: {
-      title: 'Flyer Crawler API',
-      version: '1.0.0',
-      description: 'API for the Flyer Crawler application',
-      contact: {
-        name: 'API Support',
-      },
-    },
-    servers: [
-      {
-        url: '/api',
-        description: 'API server',
-      },
-    ],
-    components: {
-      securitySchemes: {
-        bearerAuth: {
-          type: 'http',
-          scheme: 'bearer',
-          bearerFormat: 'JWT',
-        },
-      },
+```json
+{
+  "entryFile": "server.ts",
+  "noImplicitAdditionalProperties": "throw-on-extras",
+  "controllerPathGlobs": ["src/controllers/**/*.controller.ts"],
+  "spec": {
+    "outputDirectory": "src/config",
+    "specVersion": 3,
+    "securityDefinitions": {
+      "bearerAuth": {
+        "type": "http",
+        "scheme": "bearer",
+        "bearerFormat": "JWT"
+      }
     },
+    "basePath": "/api",
+    "specFileBaseName": "tsoa-spec",
+    "name": "Flyer Crawler API",
+    "version": "1.0.0"
   },
-  apis: ['./src/routes/*.ts'],
-};
-
-export const swaggerSpec = swaggerJsdoc(options);
+  "routes": {
+    "routesDir": "src/routes",
+    "basePath": "/api",
+    "middleware": "express",
+    "routesFileName": "tsoa-generated.ts",
+    "esm": true,
+    "authenticationModule": "src/middleware/tsoaAuthentication.ts"
+  }
+}
 ```
 
-### JSDoc Annotation Pattern
+### Controller Pattern
 
-Each route handler should include OpenAPI annotations using the `@openapi` tag:
+Each controller extends `BaseController` and uses tsoa decorators:
 
 ```typescript
-/**
- * @openapi
- * /health/ping:
- *   get:
- *     summary: Simple ping endpoint
- *     description: Returns a pong response to verify server is responsive
- *     tags:
- *       - Health
- *     responses:
- *       200:
- *         description: Server is responsive
- *         content:
- *           application/json:
- *             schema:
- *               type: object
- *               properties:
- *                 success:
- *                   type: boolean
- *                   example: true
- *                 data:
- *                   type: object
- *                   properties:
- *                     message:
- *                       type: string
- *                       example: pong
- */
-router.get('/ping', validateRequest(emptySchema), (_req: Request, res: Response) => {
-  return sendSuccess(res, { message: 'pong' });
-});
+import { Route, Tags, Get, Post, Body, Security, SuccessResponse, Response } from 'tsoa';
+import {
+  BaseController,
+  SuccessResponse as SuccessResponseType,
+  ErrorResponse,
+} from './base.controller';
+
+interface CreateUserRequest {
+  email: string;
+  password: string;
+  full_name?: string;
+}
+
+@Route('users')
+@Tags('Users')
+export class UserController extends BaseController {
+  /**
+   * Create a new user account.
+   * @summary Create user
+   * @param requestBody User creation data
+   * @returns Created user profile
+   */
+  @Post()
+  @SuccessResponse(201, 'User created')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(409, 'Email already exists')
+  public async createUser(
+    @Body() requestBody: CreateUserRequest,
+  ): Promise<SuccessResponseType<UserProfileDto>> {
+    // Implementation
+    const user = await userService.createUser(requestBody);
+    return this.created(user);
+  }
+
+  /**
+   * Get current user's profile.
+   * @summary Get my profile
+   * @param request Express request with authenticated user
+   * @returns User profile
+   */
+  @Get('me')
+  @Security('bearerAuth')
+  @SuccessResponse(200, 'Profile retrieved')
+  @Response<ErrorResponse>(401, 'Not authenticated')
+  public async getMyProfile(
+    @Request() request: Express.Request,
+  ): Promise<SuccessResponseType<UserProfileDto>> {
+    const user = request.user as UserProfile;
+    return this.success(toUserProfileDto(user));
+  }
+}
 ```
 
-### Route Documentation Priority
+### BaseController Helpers
 
-Document routes in this order of priority:
+The `BaseController` class provides standardized response formatting:
 
-1. **Health Routes** - `/api/health/*` (public, critical for operations)
-2. **Auth Routes** - `/api/auth/*` (public, essential for integration)
-3. **Gamification Routes** - `/api/achievements/*` (simple, good example)
-4. **Flyer Routes** - `/api/flyers/*` (core functionality)
-5. **User Routes** - `/api/users/*` (common CRUD patterns)
-6. **Remaining Routes** - Budget, Recipe, Admin, etc.
+```typescript
+export abstract class BaseController extends Controller {
+  // Success response with data
+  protected success<T>(data: T): SuccessResponse<T> {
+    return { success: true, data };
+  }
+
+  // Success with 201 Created status
+  protected created<T>(data: T): SuccessResponse<T> {
+    this.setStatus(201);
+    return this.success(data);
+  }
+
+  // Paginated response with metadata
+  protected paginated<T>(data: T[], pagination: PaginationInput): PaginatedResponse<T> {
+    return {
+      success: true,
+      data,
+      meta: { pagination: this.calculatePagination(pagination) },
+    };
+  }
+
+  // Message-only response
+  protected message(message: string): SuccessResponse<{ message: string }> {
+    return this.success({ message });
+  }
+
+  // No content response (204)
+  protected noContent(): void {
+    this.setStatus(204);
+  }
+
+  // Error response (prefer throwing errors instead)
+  protected error(code: string, message: string, details?: unknown): ErrorResponse {
+    return { success: false, error: { code, message, details } };
+  }
+}
+```
+
+### Authentication with @Security
+
+tsoa integrates with the existing passport-jwt strategy via a custom authentication module:
+
+```typescript
+// src/middleware/tsoaAuthentication.ts
+export async function expressAuthentication(
+  request: Request,
+  securityName: string,
+  _scopes?: string[],
+): Promise<UserProfile> {
+  if (securityName !== 'bearerAuth') {
+    throw new AuthenticationError(`Unknown security scheme: ${securityName}`);
+  }
+
+  const token = extractBearerToken(request);
+  const decoded = jwt.verify(token, process.env.JWT_SECRET!);
+  const userProfile = await userRepo.findUserProfileById(decoded.user_id);
+
+  if (!userProfile) {
+    throw new AuthenticationError('User not found');
+  }
+
+  request.user = userProfile;
+  return userProfile;
+}
+```
+
+Usage in controllers:
+
+```typescript
+@Get('profile')
+@Security('bearerAuth')
+public async getProfile(@Request() req: Express.Request): Promise<...> {
+  const user = req.user as UserProfile;
+  // ...
+}
+```
+
+### DTO Organization
+
+Shared DTOs are defined in `src/dtos/common.dto.ts` to avoid duplicate type definitions across controllers:
+
+```typescript
+// src/dtos/common.dto.ts
+
+/**
+ * Address with flattened coordinates (tsoa-compatible).
+ * GeoJSONPoint uses coordinates: [number, number] which tsoa cannot handle.
+ */
+export interface AddressDto {
+  address_id: number;
+  address_line_1: string;
+  city: string;
+  province_state: string;
+  postal_code: string;
+  country: string;
+  latitude?: number | null; // Flattened from GeoJSONPoint
+  longitude?: number | null; // Flattened from GeoJSONPoint
+  // ...
+}
+
+export interface UserDto {
+  user_id: string;
+  email: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface UserProfileDto {
+  full_name?: string | null;
+  role: 'admin' | 'user';
+  points: number;
+  user: UserDto;
+  address?: AddressDto | null;
+  // ...
+}
+```
 
 ### Swagger UI Setup
 
-In `server.ts`, add the Swagger UI middleware (development/test only):
+In `server.ts`, the Swagger UI middleware serves the tsoa-generated spec:
 
 ```typescript
 import swaggerUi from 'swagger-ui-express';
-import { swaggerSpec } from './src/config/swagger';
+import tsoaSpec from './src/config/tsoa-spec.json' with { type: 'json' };
 
 // Only serve Swagger UI in non-production environments
 if (process.env.NODE_ENV !== 'production') {
-  app.use('/docs/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec));
+  app.use('/docs/api-docs', swaggerUi.serve, swaggerUi.setup(tsoaSpec));
 
-  // Optionally expose raw JSON spec for tooling
+  // Raw JSON spec for tooling
   app.get('/docs/api-docs.json', (_req, res) => {
     res.setHeader('Content-Type', 'application/json');
-    res.send(swaggerSpec);
+    res.send(tsoaSpec);
   });
 }
 ```
 
+### Build Integration
+
+tsoa spec and route generation is integrated into the build pipeline:
+
+```json
+{
+  "scripts": {
+    "tsoa:spec": "tsoa spec",
+    "tsoa:routes": "tsoa routes",
+    "prebuild": "npm run tsoa:spec && npm run tsoa:routes",
+    "build": "tsc"
+  }
+}
+```
+
 ### Response Schema Standardization
 
 All API responses follow the standardized format from [ADR-028](./0028-api-response-standardization.md):
@@ -160,107 +319,144 @@ All API responses follow the standardized format from [ADR-028](./0028-api-respo
   "data": { ... }
 }
 
+// Paginated response
+{
+  "success": true,
+  "data": [...],
+  "meta": {
+    "pagination": {
+      "page": 1,
+      "limit": 20,
+      "total": 100,
+      "totalPages": 5,
+      "hasNextPage": true,
+      "hasPrevPage": false
+    }
+  }
+}
+
 // Error response
 {
   "success": false,
   "error": {
-    "code": "ERROR_CODE",
-    "message": "Human-readable message"
+    "code": "NOT_FOUND",
+    "message": "User not found"
   }
 }
 ```
 
-Define reusable schema components for these patterns:
-
-```typescript
-/**
- * @openapi
- * components:
- *   schemas:
- *     SuccessResponse:
- *       type: object
- *       properties:
- *         success:
- *           type: boolean
- *           example: true
- *         data:
- *           type: object
- *     ErrorResponse:
- *       type: object
- *       properties:
- *         success:
- *           type: boolean
- *           example: false
- *         error:
- *           type: object
- *           properties:
- *             code:
- *               type: string
- *             message:
- *               type: string
- */
-```
-
-### Security Considerations
-
-1. **Production Disabled**: Swagger UI is not available in production to prevent information disclosure.
-2. **No Sensitive Data**: Never include actual secrets, tokens, or PII in example values.
-3. **Authentication Documented**: Clearly document which endpoints require authentication.
-
 ## API Route Tags
 
 Organize endpoints using consistent tags:
 
-| Tag          | Description                        | Routes                |
+| Tag          | Description                        | Route Prefix          |
 | ------------ | ---------------------------------- | --------------------- |
 | Health       | Server health and readiness checks | `/api/health/*`       |
 | Auth         | Authentication and authorization   | `/api/auth/*`         |
 | Users        | User profile management            | `/api/users/*`        |
 | Flyers       | Flyer uploads and retrieval        | `/api/flyers/*`       |
-| Achievements | Gamification and leaderboards      | `/api/achievements/*` |
-| Budgets      | Budget tracking                    | `/api/budgets/*`      |
+| Deals        | Deal search and management         | `/api/deals/*`        |
+| Stores       | Store information                  | `/api/stores/*`       |
 | Recipes      | Recipe management                  | `/api/recipes/*`      |
+| Budgets      | Budget tracking                    | `/api/budgets/*`      |
+| Inventory    | User inventory management          | `/api/inventory/*`    |
+| Gamification | Achievements and leaderboards      | `/api/achievements/*` |
 | Admin        | Administrative operations          | `/api/admin/*`        |
 | System       | System status and monitoring       | `/api/system/*`       |
 
+## Controller Inventory
+
+The following controllers have been migrated to tsoa:
+
+| Controller                      | Endpoints | Description                               |
+| ------------------------------- | --------- | ----------------------------------------- |
+| `health.controller.ts`          | 10        | Health checks, probes, service status     |
+| `auth.controller.ts`            | 8         | Login, register, password reset, OAuth    |
+| `user.controller.ts`            | 30        | User profiles, preferences, notifications |
+| `admin.controller.ts`           | 32        | System administration, user management    |
+| `ai.controller.ts`              | 15        | AI-powered extraction and analysis        |
+| `flyer.controller.ts`           | 12        | Flyer upload and management               |
+| `store.controller.ts`           | 8         | Store information                         |
+| `recipe.controller.ts`          | 10        | Recipe CRUD and suggestions               |
+| `upc.controller.ts`             | 6         | UPC barcode lookups                       |
+| `inventory.controller.ts`       | 8         | User inventory management                 |
+| `receipt.controller.ts`         | 6         | Receipt processing                        |
+| `budget.controller.ts`          | 8         | Budget tracking                           |
+| `category.controller.ts`        | 4         | Category management                       |
+| `deals.controller.ts`           | 8         | Deal search and discovery                 |
+| `stats.controller.ts`           | 6         | Usage statistics                          |
+| `price.controller.ts`           | 6         | Price history and tracking                |
+| `system.controller.ts`          | 4         | System status                             |
+| `gamification.controller.ts`    | 10        | Achievements, leaderboards                |
+| `personalization.controller.ts` | 6         | User recommendations                      |
+| `reactions.controller.ts`       | 4         | Item reactions and ratings                |
+
+## Security Considerations
+
+1. **Production Disabled**: Swagger UI is not available in production to prevent information disclosure.
+2. **No Sensitive Data**: Never include actual secrets, tokens, or PII in example values.
+3. **Authentication Documented**: Clearly document which endpoints require authentication.
+4. **Rate Limiting**: Rate limiters are applied via `@Middlewares` decorator.
+
 ## Testing
 
 Verify API documentation is correct by:
 
 1. **Manual Review**: Navigate to `/docs/api-docs` and test each endpoint.
 2. **Spec Validation**: Use OpenAPI validators to check the generated spec.
-3. **Integration Tests**: Existing integration tests serve as implicit documentation verification.
+3. **Controller Tests**: Each controller has comprehensive test coverage (369 controller tests total).
+4. **Integration Tests**: 345 integration tests verify endpoint behavior.
 
 ## Consequences
 
 ### Positive
 
-- **Single Source of Truth**: Documentation lives with the code and stays in sync.
-- **Interactive Exploration**: Developers can try endpoints directly from the UI.
-- **SDK Generation**: OpenAPI spec enables automatic client SDK generation.
-- **Onboarding**: New developers can quickly understand the API surface.
-- **Low Overhead**: JSDoc annotations are minimal additions to existing code.
+- **Type-safe API contracts**: tsoa decorators derive types from TypeScript, eliminating duplicate definitions
+- **Single Source of Truth**: Documentation lives with the code and stays in sync
+- **Active Maintenance**: tsoa is actively maintained with regular releases
+- **Interactive Exploration**: Developers can try endpoints directly from Swagger UI
+- **SDK Generation**: OpenAPI spec enables automatic client SDK generation
+- **Reduced Boilerplate**: tsoa generates Express routes automatically
 
 ### Negative
 
-- **Maintenance Required**: Developers must update annotations when routes change.
-- **Build Dependency**: Adds `swagger-jsdoc` and `swagger-ui-express` packages.
-- **Initial Investment**: Existing routes need annotations added incrementally.
+- **Learning Curve**: Decorator-based controller pattern differs from Express handlers
+- **Generated Code**: `tsoa-generated.ts` must be regenerated when controllers change
+- **Build Step**: Adds `tsoa spec && tsoa routes` to the build pipeline
 
 ### Mitigation
 
-- Include documentation checks in code review process.
-- Start with high-priority routes and expand coverage over time.
-- Use TypeScript types to reduce documentation duplication where possible.
+- **Migration Guide**: Created comprehensive TSOA-MIGRATION-GUIDE.md for developers
+- **BaseController**: Provides familiar response helpers matching existing patterns
+- **Incremental Adoption**: Existing Express routes continue to work alongside tsoa controllers
 
 ## Key Files
 
-- `src/config/swagger.ts` - OpenAPI configuration
-- `src/routes/*.ts` - Route files with JSDoc annotations
-- `server.ts` - Swagger UI middleware setup
+| File                                   | Purpose                                 |
+| -------------------------------------- | --------------------------------------- |
+| `tsoa.json`                            | tsoa configuration                      |
+| `src/controllers/base.controller.ts`   | Base controller with response utilities |
+| `src/controllers/types.ts`             | Shared controller type definitions      |
+| `src/controllers/*.controller.ts`      | Individual domain controllers           |
+| `src/dtos/common.dto.ts`               | Shared DTO definitions                  |
+| `src/middleware/tsoaAuthentication.ts` | JWT authentication handler              |
+| `src/routes/tsoa-generated.ts`         | tsoa-generated Express routes           |
+| `src/config/tsoa-spec.json`            | Generated OpenAPI 3.0 spec              |
+| `server.ts`                            | Swagger UI middleware setup             |
+
+## Migration History
+
+| Date       | Change                                                          |
+| ---------- | --------------------------------------------------------------- |
+| 2025-12-12 | Initial ADR created with swagger-jsdoc approach                 |
+| 2026-01-11 | Began implementation with swagger-jsdoc                         |
+| 2026-02-12 | Completed migration to tsoa, superseding swagger-jsdoc approach |
 
 ## Related ADRs
 
+- [ADR-059](./0059-dependency-modernization.md) - Dependency Modernization (tsoa migration plan)
 - [ADR-003](./0003-standardized-input-validation-using-middleware.md) - Input Validation (Zod schemas)
 - [ADR-028](./0028-api-response-standardization.md) - Response Standardization
+- [ADR-001](./0001-standardized-error-handling.md) - Error Handling
 - [ADR-016](./0016-api-security-hardening.md) - Security Hardening
+- [ADR-048](./0048-authentication-strategy.md) - Authentication Strategy

docs/adr/0027-standardized-naming-convention-for-ai-and-database-types.md

@@ -16,12 +16,12 @@ We will adopt a hybrid naming convention strategy to explicitly distinguish betw
 
 1. **Database and AI Types (`snake_case`)**:
    Interfaces, Type definitions, and Zod schemas that represent raw database rows or direct AI responses **MUST** use `snake_case`.
-   - *Examples*: `AiFlyerDataSchema`, `ExtractedFlyerItemSchema`, `FlyerInsert`.
-   - *Reasoning*: This avoids unnecessary mapping layers when inserting data into the database or parsing AI output. It serves as a visual cue that the data is "raw", "external", or destined for persistence.
+   - _Examples_: `AiFlyerDataSchema`, `ExtractedFlyerItemSchema`, `FlyerInsert`.
+   - _Reasoning_: This avoids unnecessary mapping layers when inserting data into the database or parsing AI output. It serves as a visual cue that the data is "raw", "external", or destined for persistence.
 
 2. **Internal Application Logic (`camelCase`)**:
    Variables, function arguments, and processed data structures used within the application logic (Service layer, UI components, utility functions) **MUST** use `camelCase`.
-   - *Reasoning*: This adheres to standard JavaScript/TypeScript practices and maintains consistency with the rest of the ecosystem (React, etc.).
+   - _Reasoning_: This adheres to standard JavaScript/TypeScript practices and maintains consistency with the rest of the ecosystem (React, etc.).
 
 3. **Boundary Handling**:
    - For background jobs that primarily move data from AI to DB, preserving `snake_case` is preferred to minimize transformation logic.

docs/adr/0058-browser-test-performance-optimization.md

@@ -0,0 +1,517 @@
+# ADR-0042: Browser Test Performance Optimization
+
+**Status**: Accepted
+**Date**: 2026-02-10
+**Authors**: Claude Code AI Agent
+
+## Context
+
+### Current State
+
+The stock-alert project has 64 Playwright browser tests across 5 spec files taking approximately 240 seconds (~4 minutes) to execute. Analysis reveals three major performance bottlenecks:
+
+| Metric                              | Count | Impact                                       |
+| ----------------------------------- | ----- | -------------------------------------------- |
+| Hardcoded `waitForTimeout()` calls  | 66    | ~120s cumulative wait time                   |
+| Redundant login calls per test      | 43    | ~2-3s each = 86-129s overhead                |
+| Visual regression tests blocking CI | 4     | Cannot run in parallel with functional tests |
+
+### Test Distribution
+
+| File                | Tests  | `waitForTimeout` Calls | `login()` Calls          |
+| ------------------- | ------ | ---------------------- | ------------------------ |
+| `dashboard.spec.js` | 10     | 8                      | 10                       |
+| `alerts.spec.js`    | 14     | 25                     | 1 (beforeEach)           |
+| `gaps.spec.js`      | 20     | 29                     | 1 (beforeEach)           |
+| `login.spec.js`     | 11     | 4                      | 0 (tests login itself)   |
+| `visual.spec.js`    | 4      | 0                      | 4 (via navigateWithAuth) |
+| **Total**           | **59** | **66**                 | **16 patterns**          |
+
+### Root Causes
+
+1. **Anti-Pattern: Hardcoded Timeouts**
+   - `waitForTimeout(2000)` used to "wait for data to load"
+   - Unnecessarily slow on fast systems, flaky on slow systems
+   - No correlation to actual page readiness
+
+2. **Anti-Pattern: Per-Test Authentication**
+   - Each test navigates to `/login`, enters password, submits
+   - Session cookie persists across requests but not across tests
+   - `beforeEach` login adds 2-3 seconds per test
+
+3. **Architecture: Mixed Test Types**
+   - Visual regression tests require different infrastructure (baseline images)
+   - Functional tests and visual tests compete for worker slots
+   - Cannot optimize CI parallelization
+
+### Requirements
+
+1. Reduce test suite runtime by 40-55%
+2. Improve test determinism (eliminate flakiness)
+3. Maintain test coverage and reliability
+4. Enable parallel CI execution where possible
+5. Document patterns for other projects
+
+## Decision
+
+Implement three optimization phases:
+
+### Phase 1: Event-Based Wait Replacement (Primary Impact: ~50% of time savings)
+
+Replace all 66 `waitForTimeout()` calls with Playwright's event-based waiting APIs.
+
+**Replacement Patterns:**
+
+| Current Pattern                         | Replacement                                       | Rationale                     |
+| --------------------------------------- | ------------------------------------------------- | ----------------------------- |
+| `waitForTimeout(2000)` after navigation | `waitForLoadState('networkidle')`                 | Waits for network quiescence  |
+| `waitForTimeout(1000)` after click      | `waitForSelector('.result')`                      | Waits for specific DOM change |
+| `waitForTimeout(3000)` for charts       | `waitForSelector('canvas', { state: 'visible' })` | Waits for chart render        |
+| `waitForTimeout(500)` for viewport      | `waitForFunction(() => ...)`                      | Waits for layout reflow       |
+
+**Implementation Examples:**
+
+```javascript
+// BEFORE: Hardcoded timeout
+await page.goto('/alerts');
+await page.waitForTimeout(2000);
+const rows = await page.locator('tbody tr').count();
+
+// AFTER: Event-based wait
+await page.goto('/alerts');
+await page.waitForLoadState('networkidle');
+await page.waitForSelector('tbody tr', { state: 'attached' });
+const rows = await page.locator('tbody tr').count();
+```
+
+```javascript
+// BEFORE: Hardcoded timeout after action
+await page.click('#runCheckBtn');
+await page.waitForTimeout(2000);
+
+// AFTER: Wait for response
+const [response] = await Promise.all([
+  page.waitForResponse((resp) => resp.url().includes('/api/check')),
+  page.click('#runCheckBtn'),
+]);
+```
+
+**Helper Function Addition to `helpers.js`:**
+
+```javascript
+/**
+ * Waits for page to be fully loaded with data.
+ * Replaces hardcoded waitForTimeout calls.
+ */
+async function waitForPageReady(page, options = {}) {
+  const { dataSelector = null, networkIdle = true, minTime = 0 } = options;
+
+  const promises = [];
+
+  if (networkIdle) {
+    promises.push(page.waitForLoadState('networkidle'));
+  }
+
+  if (dataSelector) {
+    promises.push(page.waitForSelector(dataSelector, { state: 'visible' }));
+  }
+
+  if (minTime > 0) {
+    promises.push(page.waitForTimeout(minTime)); // Escape hatch for animations
+  }
+
+  await Promise.all(promises);
+}
+```
+
+**Estimated Time Savings:** 60-80 seconds (eliminates ~120s of cumulative waits, but event waits have overhead)
+
+### Phase 2: Global Authentication Setup (Primary Impact: ~35% of time savings)
+
+Share authenticated session across all tests using Playwright's global setup feature.
+
+**Architecture:**
+
+```
+                         ┌──────────────────┐
+                         │  global-setup.js │
+                         │                  │
+                         │ 1. Login once    │
+                         │ 2. Save storage  │
+                         └────────┬─────────┘
+                                  │
+           ┌──────────────────────┼──────────────────────┐
+           │                      │                      │
+           ▼                      ▼                      ▼
+  ┌─────────────────┐   ┌─────────────────┐   ┌─────────────────┐
+  │ dashboard.spec  │   │  alerts.spec    │   │   gaps.spec     │
+  │ (reuses auth)   │   │ (reuses auth)   │   │ (reuses auth)   │
+  └─────────────────┘   └─────────────────┘   └─────────────────┘
+```
+
+**Implementation Files:**
+
+**`tests/browser/global-setup.js`:**
+
+```javascript
+const { chromium } = require('@playwright/test');
+const path = require('path');
+
+const authFile = path.join(__dirname, '.auth', 'user.json');
+
+module.exports = async function globalSetup() {
+  const browser = await chromium.launch();
+  const page = await browser.newPage();
+
+  // Only perform login if authentication is enabled
+  if (process.env.DASHBOARD_PASSWORD) {
+    await page.goto(process.env.PLAYWRIGHT_BASE_URL || 'http://localhost:8980');
+
+    // Perform login
+    await page.goto('/login');
+    await page.fill('#password', process.env.DASHBOARD_PASSWORD);
+    await page.click('button[type="submit"]');
+    await page.waitForURL('/');
+
+    // Save authentication state
+    await page.context().storageState({ path: authFile });
+  }
+
+  await browser.close();
+};
+```
+
+**`playwright.config.js` Updates:**
+
+```javascript
+module.exports = defineConfig({
+  // ... existing config ...
+
+  // Global setup runs once before all tests
+  globalSetup: require.resolve('./tests/browser/global-setup.js'),
+
+  projects: [
+    {
+      name: 'chromium',
+      use: {
+        ...devices['Desktop Chrome'],
+        // Reuse authentication state from global setup
+        storageState: './tests/browser/.auth/user.json',
+      },
+    },
+  ],
+});
+```
+
+**Test File Updates:**
+
+```javascript
+// BEFORE: Login in beforeEach
+test.beforeEach(async ({ page }) => {
+  page.consoleErrors = captureConsoleErrors(page);
+  if (isAuthEnabled()) {
+    await login(page);
+  }
+});
+
+// AFTER: Remove login (handled by global setup)
+test.beforeEach(async ({ page }) => {
+  page.consoleErrors = captureConsoleErrors(page);
+  // Authentication already applied via storageState
+});
+```
+
+**Estimated Time Savings:** 80-100 seconds (43 logins x ~2-3s each, minus 3s for global setup)
+
+### Phase 3: Visual Test Separation (Primary Impact: CI parallelization)
+
+Separate visual regression tests into a dedicated project for parallel CI execution.
+
+**Project Configuration:**
+
+```javascript
+// playwright.config.js
+module.exports = defineConfig({
+  projects: [
+    // Functional tests - fast, event-based
+    {
+      name: 'functional',
+      testMatch: /^(?!.*visual).*\.spec\.js$/,
+      use: {
+        ...devices['Desktop Chrome'],
+        storageState: './tests/browser/.auth/user.json',
+      },
+    },
+    // Visual tests - separate baseline management
+    {
+      name: 'visual',
+      testMatch: '**/visual.spec.js',
+      use: {
+        ...devices['Desktop Chrome'],
+        storageState: './tests/browser/.auth/user.json',
+      },
+      // Different snapshot handling
+      snapshotPathTemplate: '{testDir}/__screenshots__/{projectName}/{testFilePath}/{arg}{ext}',
+    },
+  ],
+});
+```
+
+**CI Pipeline Updates:**
+
+```yaml
+# .gitea/workflows/test.yml
+jobs:
+  browser-functional:
+    runs-on: ubuntu-latest
+    steps:
+      - run: npx playwright test --project=functional
+
+  browser-visual:
+    runs-on: ubuntu-latest
+    steps:
+      - run: npx playwright test --project=visual
+```
+
+**Estimated Time Savings:** 30-45 seconds (parallel execution vs sequential)
+
+## Implementation Schedule
+
+### Critical Path (Estimated 8-12 hours)
+
+```
+Phase 1 (Event Waits)      ████████████████ [4-6h]
+                                          │
+Phase 2 (Global Auth)                     ████████ [2-3h]
+                                                  │
+Phase 3 (Visual Separation)                       ████ [2-3h]
+```
+
+### Effort Summary
+
+| Phase                    | Min Hours | Max Hours | Expected Savings      |
+| ------------------------ | --------- | --------- | --------------------- |
+| 1. Event-Based Waits     | 4         | 6         | 60-80s (25-33%)       |
+| 2. Global Authentication | 2         | 3         | 80-100s (33-42%)      |
+| 3. Visual Separation     | 2         | 3         | 30-45s (CI parallel)  |
+| **Total**                | **8**     | **12**    | **170-225s (70-94%)** |
+
+### Expected Results
+
+| Metric             | Before | After     | Improvement   |
+| ------------------ | ------ | --------- | ------------- |
+| Total Runtime      | 240s   | 110-140s  | 42-54% faster |
+| Flaky Test Rate    | ~5%    | <1%       | 80% reduction |
+| CI Parallelization | None   | 2 workers | 2x throughput |
+| Login Operations   | 43     | 1         | 98% reduction |
+| Hardcoded Waits    | 66     | <5        | 92% reduction |
+
+## Consequences
+
+### Positive
+
+1. **Performance**: 40-55% reduction in test runtime
+2. **Reliability**: Event-based waits eliminate timing flakiness
+3. **Scalability**: Global setup pattern scales to N tests with O(1) login cost
+4. **CI Efficiency**: Parallel visual tests enable faster feedback loops
+5. **Maintainability**: Centralized auth logic reduces code duplication
+6. **Transferable Knowledge**: Patterns applicable to any Playwright project
+
+### Negative
+
+1. **Initial Migration Effort**: 8-12 hours of refactoring
+2. **Learning Curve**: Team must understand Playwright wait APIs
+3. **Global Setup Complexity**: Adds shared state between tests
+4. **Debugging Harder**: Shared auth can mask test isolation issues
+
+### Mitigations
+
+| Risk               | Mitigation                                                    |
+| ------------------ | ------------------------------------------------------------- |
+| Global setup fails | Add retry logic; fallback to per-test login                   |
+| Event waits flaky  | Keep small timeout buffer (100ms) as escape hatch             |
+| Visual tests drift | Separate baseline management per environment                  |
+| Test isolation     | Run `--project=functional` without auth for isolation testing |
+
+### Neutral
+
+- Test count unchanged (59 tests)
+- Coverage unchanged
+- Visual baselines unchanged (path changes only)
+
+## Alternatives Considered
+
+### Alternative 1: Reduce Test Count
+
+**Rejected:** Sacrifices coverage for speed. Tests exist for a reason.
+
+### Alternative 2: Increase Worker Parallelism
+
+**Rejected:** Server cannot handle >2 concurrent sessions reliably; creates resource contention.
+
+### Alternative 3: Use `page.waitForTimeout()` with Shorter Durations
+
+**Rejected:** Addresses symptom, not root cause. Still creates timing-dependent tests.
+
+### Alternative 4: Cookie Injection Instead of Login
+
+**Rejected:** Requires reverse-engineering session format; brittle if auth changes.
+
+### Alternative 5: HTTP API Authentication (No Browser)
+
+**Rejected:** Loses browser session behavior validation; tests login flow.
+
+## Implementation Details
+
+### Wait Replacement Mapping
+
+| File                | Current Timeouts       | Replacement Strategy                                                   |
+| ------------------- | ---------------------- | ---------------------------------------------------------------------- |
+| `dashboard.spec.js` | 1000ms, 2000ms, 3000ms | `waitForSelector` for charts, `waitForLoadState` for navigation        |
+| `alerts.spec.js`    | 500ms, 1000ms, 2000ms  | `waitForResponse` for API calls, `waitForSelector` for table rows      |
+| `gaps.spec.js`      | 500ms, 1000ms, 2000ms  | `waitForResponse` for `/api/gaps`, `waitForSelector` for summary cards |
+| `login.spec.js`     | 500ms, 2000ms          | `waitForURL` for redirects, `waitForSelector` for error messages       |
+
+### Common Wait Patterns for This Codebase
+
+| Scenario              | Recommended Pattern                               | Example                   |
+| --------------------- | ------------------------------------------------- | ------------------------- |
+| After page navigation | `waitForLoadState('networkidle')`                 | Loading dashboard data    |
+| After button click    | `waitForResponse()` + `waitForSelector()`         | Run Check button          |
+| After filter change   | `waitForResponse(/api\/.*/)`                      | Status filter dropdown    |
+| For chart rendering   | `waitForSelector('canvas', { state: 'visible' })` | Chart cards               |
+| For modal appearance  | `waitForSelector('.modal', { state: 'visible' })` | Confirmation dialogs      |
+| For layout change     | `waitForFunction()`                               | Responsive viewport tests |
+
+### Auth Storage Structure
+
+```
+tests/browser/
+├── .auth/
+│   └── user.json          # Generated by global-setup, gitignored
+├── global-setup.js        # Creates user.json
+├── dashboard.spec.js      # Uses storageState
+├── alerts.spec.js
+├── gaps.spec.js
+├── login.spec.js          # Tests login itself, may need special handling
+└── visual.spec.js
+```
+
+**`.gitignore` Addition:**
+
+```
+tests/browser/.auth/
+```
+
+### Login.spec.js Special Handling
+
+`login.spec.js` tests the login flow itself and must NOT use the shared auth state:
+
+```javascript
+// playwright.config.js
+projects: [
+  {
+    name: 'functional',
+    testMatch: /^(?!.*login).*\.spec\.js$/,
+    use: { storageState: './tests/browser/.auth/user.json' },
+  },
+  {
+    name: 'login',
+    testMatch: '**/login.spec.js',
+    use: { storageState: undefined }, // No auth - tests login flow
+  },
+];
+```
+
+## Testing the Optimization
+
+### Baseline Measurement
+
+```bash
+# Before optimization: establish baseline
+time npm run test:browser 2>&1 | tee baseline-timing.log
+grep -E "passed|failed|skipped" baseline-timing.log
+```
+
+### Incremental Verification
+
+```bash
+# After Phase 1: verify wait replacement
+npm run test:browser -- --reporter=list 2>&1 | grep -E "passed|failed|slow"
+
+# After Phase 2: verify global auth
+npm run test:browser -- --trace on
+# Check trace for login occurrences (should be 1)
+
+# After Phase 3: verify parallel execution
+npm run test:browser -- --project=functional &
+npm run test:browser -- --project=visual &
+wait
+```
+
+### Success Criteria
+
+| Metric                 | Target | Measurement                            |
+| ---------------------- | ------ | -------------------------------------- |
+| Total runtime          | <150s  | `time npm run test:browser`            |
+| Login count            | 1      | Grep traces for `/login` navigation    |
+| Flaky rate             | <2%    | 50 consecutive CI runs                 |
+| `waitForTimeout` count | <5     | `grep -r waitForTimeout tests/browser` |
+
+## Lessons Learned / Patterns for Other Projects
+
+### Pattern 1: Always Prefer Event-Based Waits
+
+```javascript
+// Bad
+await page.click('#submit');
+await page.waitForTimeout(2000);
+expect(await page.title()).toBe('Success');
+
+// Good
+await Promise.all([page.waitForNavigation(), page.click('#submit')]);
+expect(await page.title()).toBe('Success');
+```
+
+### Pattern 2: Global Setup for Authentication
+
+Playwright's `storageState` feature should be the default for any authenticated app:
+
+1. Create `global-setup.js` that performs login once
+2. Save cookies/storage to JSON file
+3. Configure `storageState` in `playwright.config.js`
+4. Tests start authenticated with zero overhead
+
+### Pattern 3: Separate Test Types by Execution Characteristics
+
+| Test Type  | Characteristics          | Strategy                          |
+| ---------- | ------------------------ | --------------------------------- |
+| Functional | Fast, deterministic      | Run first, gate deployment        |
+| Visual     | Slow, baseline-dependent | Run in parallel, separate project |
+| E2E        | Cross-service, slow      | Run nightly, separate workflow    |
+
+### Pattern 4: Measure Before and After
+
+Always establish baseline metrics before optimization:
+
+```bash
+# Essential metrics to capture
+time npm run test:browser       # Total runtime
+grep -c waitForTimeout *.js     # Hardcoded wait count
+grep -c 'await login' *.js      # Login call count
+```
+
+## Related ADRs
+
+- [ADR-0031](0031-quality-gates-eslint-playwright.md): Quality Gates - ESLint, Pre-commit Hooks, and Playwright Browser Testing
+- [ADR-0035](0035-browser-test-selector-fixes.md): Browser Test Selector Fixes
+- [ADR-0008](0008-testing-strategy.md): Testing Strategy
+
+## References
+
+- Playwright Best Practices: https://playwright.dev/docs/best-practices
+- Playwright Authentication: https://playwright.dev/docs/auth
+- Playwright Wait Strategies: https://playwright.dev/docs/actionability
+- Test Files: `tests/browser/*.spec.js`
+- Helper Module: `tests/browser/helpers.js`
+- Configuration: `playwright.config.js`

docs/adr/0059-dependency-modernization.md

@@ -0,0 +1,308 @@
+# ADR-059: Dependency Modernization Plan
+
+**Status**: Accepted
+**Date**: 2026-02-12
+**Implemented**: 2026-02-12
+
+## Context
+
+NPM audit and security scanning identified deprecated dependencies requiring modernization:
+
+| Dependency      | Current | Issue                   | Replacement                             |
+| --------------- | ------- | ----------------------- | --------------------------------------- |
+| `swagger-jsdoc` | 6.2.8   | Unmaintained since 2022 | `tsoa` (decorator-based OpenAPI)        |
+| `rimraf`        | 6.1.2   | Legacy cleanup utility  | Node.js `fs.rm()` (native since v14.14) |
+
+**Constraints**:
+
+- Existing `@openapi` JSDoc annotations in 20 route files
+- ADR-018 compliance (API documentation strategy)
+- Zero-downtime migration (phased approach)
+- Must maintain Express 5.x compatibility
+
+## Decision
+
+### 1. swagger-jsdoc → tsoa Migration
+
+**Architecture**: tsoa controller classes + Express integration (no replacement of Express routing layer).
+
+```text
+Current:  Route Files → JSDoc Annotations → swagger-jsdoc → OpenAPI Spec
+Future:   Controller Classes → @Route/@Get decorators → tsoa → OpenAPI Spec + Route Registration
+```
+
+**Controller Pattern**: Base controller providing common utilities:
+
+```typescript
+// src/controllers/base.controller.ts
+export abstract class BaseController {
+  protected sendSuccess<T>(res: Response, data: T, status = 200) {
+    return sendSuccess(res, data, status);
+  }
+  protected sendError(
+    res: Response,
+    code: ErrorCode,
+    msg: string,
+    status: number,
+    details?: unknown,
+  ) {
+    return sendError(res, code, msg, status, details);
+  }
+}
+```
+
+**Express Integration Strategy**: tsoa generates routes.ts; wrap with Express middleware pipeline:
+
+```typescript
+// server.ts integration
+import { RegisterRoutes } from './src/generated/routes';
+RegisterRoutes(app); // tsoa registers routes with existing Express app
+```
+
+### 2. rimraf → fs.rm() Migration
+
+**Change**: Replace `rimraf coverage .coverage` script with Node.js native API.
+
+```json
+// package.json (before)
+"clean": "rimraf coverage .coverage"
+
+// package.json (after)
+"clean": "node -e \"import('fs/promises').then(fs => Promise.all([fs.rm('coverage', {recursive:true,force:true}), fs.rm('.coverage', {recursive:true,force:true})]))\""
+```
+
+**Alternative**: Create `scripts/clean.mjs` for maintainability:
+
+```javascript
+// scripts/clean.mjs
+import { rm } from 'fs/promises';
+await Promise.all([
+  rm('coverage', { recursive: true, force: true }),
+  rm('.coverage', { recursive: true, force: true }),
+]);
+```
+
+## Implementation Plan
+
+### Phase 1: Infrastructure (Tasks 1-4)
+
+| Task | Description                                    | Dependencies |
+| ---- | ---------------------------------------------- | ------------ |
+| 1    | Install tsoa, configure tsoa.json              | None         |
+| 2    | Create BaseController with utility methods     | Task 1       |
+| 3    | Configure Express integration (RegisterRoutes) | Task 2       |
+| 4    | Set up tsoa spec generation in build pipeline  | Task 3       |
+
+### Phase 2: Controller Migration (Tasks 5-14)
+
+Priority order matches ADR-018:
+
+| Task | Route File                                                                                                        | Controller Class       | Dependencies |
+| ---- | ----------------------------------------------------------------------------------------------------------------- | ---------------------- | ------------ |
+| 5    | health.routes.ts                                                                                                  | HealthController       | Task 4       |
+| 6    | auth.routes.ts                                                                                                    | AuthController         | Task 4       |
+| 7    | gamification.routes.ts                                                                                            | AchievementsController | Task 4       |
+| 8    | flyer.routes.ts                                                                                                   | FlyersController       | Task 4       |
+| 9    | user.routes.ts                                                                                                    | UsersController        | Task 4       |
+| 10   | budget.routes.ts                                                                                                  | BudgetController       | Task 4       |
+| 11   | recipe.routes.ts                                                                                                  | RecipeController       | Task 4       |
+| 12   | store.routes.ts                                                                                                   | StoreController        | Task 4       |
+| 13   | admin.routes.ts                                                                                                   | AdminController        | Task 4       |
+| 14   | Remaining routes (deals, price, upc, inventory, ai, receipt, category, stats, personalization, reactions, system) | Various                | Task 4       |
+
+### Phase 3: Cleanup and rimraf (Tasks 15-18)
+
+| Task | Description                      | Dependencies        |
+| ---- | -------------------------------- | ------------------- |
+| 15   | Create scripts/clean.mjs         | None                |
+| 16   | Update package.json clean script | Task 15             |
+| 17   | Remove rimraf dependency         | Task 16             |
+| 18   | Remove swagger-jsdoc + types     | Tasks 5-14 complete |
+
+### Phase 4: Verification (Tasks 19-24)
+
+| Task | Description                       | Dependencies |
+| ---- | --------------------------------- | ------------ |
+| 19   | Run type-check                    | Tasks 15-18  |
+| 20   | Run unit tests                    | Task 19      |
+| 21   | Run integration tests             | Task 20      |
+| 22   | Verify OpenAPI spec completeness  | Task 21      |
+| 23   | Update ADR-018 (reference tsoa)   | Task 22      |
+| 24   | Update CLAUDE.md (swagger → tsoa) | Task 23      |
+
+### Task Dependency Graph
+
+```text
+                    [1: Install tsoa]
+                           |
+                    [2: BaseController]
+                           |
+                    [3: Express Integration]
+                           |
+                    [4: Build Pipeline]
+                           |
+        +------------------+------------------+
+        |         |        |        |         |
+       [5]       [6]      [7]      [8]    [9-14]
+     Health     Auth    Gamif    Flyer   Others
+        |         |        |        |         |
+        +------------------+------------------+
+                           |
+                    [18: Remove swagger-jsdoc]
+                           |
+[15: clean.mjs] -----> [16: Update pkg.json]
+                           |
+                    [17: Remove rimraf]
+                           |
+                    [19: type-check]
+                           |
+                    [20: unit tests]
+                           |
+                    [21: integration tests]
+                           |
+                    [22: Verify OpenAPI]
+                           |
+                    [23: Update ADR-018]
+                           |
+                    [24: Update CLAUDE.md]
+```
+
+### Critical Path
+
+**Minimum time to completion**: Tasks 1 → 2 → 3 → 4 → 5 (or any controller) → 18 → 19 → 20 → 21 → 22 → 23 → 24
+
+**Parallelization opportunities**:
+
+- Tasks 5-14 (all controller migrations) can run in parallel after Task 4
+- Tasks 15-17 (rimraf removal) can run in parallel with controller migrations
+
+## Technical Decisions
+
+### tsoa Configuration
+
+```json
+// tsoa.json
+{
+  "entryFile": "server.ts",
+  "noImplicitAdditionalProperties": "throw-on-extras",
+  "controllerPathGlobs": ["src/controllers/**/*.controller.ts"],
+  "spec": {
+    "outputDirectory": "src/generated",
+    "specVersion": 3,
+    "basePath": "/api/v1"
+  },
+  "routes": {
+    "routesDir": "src/generated",
+    "middleware": "express"
+  }
+}
+```
+
+### Decorator Migration Example
+
+**Before** (swagger-jsdoc):
+
+```typescript
+/**
+ * @openapi
+ * /health/ping:
+ *   get:
+ *     summary: Simple ping endpoint
+ *     tags: [Health]
+ *     responses:
+ *       200:
+ *         description: Server is responsive
+ */
+router.get('/ping', validateRequest(emptySchema), handler);
+```
+
+**After** (tsoa):
+
+```typescript
+@Route('health')
+@Tags('Health')
+export class HealthController extends BaseController {
+  @Get('ping')
+  @SuccessResponse(200, 'Server is responsive')
+  public async ping(): Promise<{ message: string }> {
+    return { message: 'pong' };
+  }
+}
+```
+
+### Zod Integration
+
+tsoa uses its own validation. Options:
+
+1. **Replace Zod with tsoa validation** - Use `@Body`, `@Query`, `@Path` decorators with TypeScript types
+2. **Hybrid approach** - Keep Zod schemas, call `validateRequest()` within controller methods
+3. **Custom template** - Generate tsoa routes that call Zod validation middleware
+
+**Recommended**: Option 1 for new controllers; gradually migrate existing Zod schemas.
+
+## Risk Mitigation
+
+| Risk                                    | Likelihood | Impact | Mitigation                                  |
+| --------------------------------------- | ---------- | ------ | ------------------------------------------- |
+| tsoa/Express 5.x incompatibility        | Medium     | High   | Test in dev container before migration      |
+| Missing OpenAPI coverage post-migration | Low        | Medium | Compare generated specs before/after        |
+| Authentication middleware integration   | Medium     | Medium | Test @Security decorator with passport-jwt  |
+| Test regression from route changes      | Low        | High   | Run full test suite after each controller   |
+| Build time increase (tsoa generation)   | Low        | Low    | Add to npm run build; cache generated files |
+
+## Consequences
+
+### Positive
+
+- **Type-safe API contracts**: tsoa decorators derive types from TypeScript
+- **Reduced duplication**: No more parallel JSDoc + TypeScript type definitions
+- **Modern tooling**: Active tsoa community (vs. unmaintained swagger-jsdoc)
+- **Native Node.js**: fs.rm() is built-in, no external dependency
+- **Smaller dependency tree**: Remove rimraf (5 transitive deps) + swagger-jsdoc (8 transitive deps)
+
+### Negative
+
+- **Learning curve**: Decorator-based controller pattern differs from Express handlers
+- **Migration effort**: 20 route files require conversion
+- **Generated code**: `src/generated/routes.ts` must be version-controlled or regenerated on build
+
+### Neutral
+
+- **Build step change**: Add `tsoa spec && tsoa routes` to build pipeline
+- **Testing approach**: May need to adjust test structure for controller classes
+
+## Alternatives Considered
+
+### 1. Update swagger-jsdoc to fork/successor
+
+**Rejected**: No active fork; community has moved to tsoa, fastify-swagger, or NestJS.
+
+### 2. NestJS migration
+
+**Rejected**: Full framework migration (Express → NestJS) is disproportionate to the problem scope.
+
+### 3. fastify-swagger
+
+**Rejected**: Requires Express → Fastify migration; out of scope.
+
+### 4. Keep rimraf, accept deprecation warning
+
+**Rejected**: Native fs.rm() is trivial replacement; no reason to maintain deprecated dependency.
+
+## Key Files
+
+| File                                 | Purpose                               |
+| ------------------------------------ | ------------------------------------- |
+| `tsoa.json`                          | tsoa configuration                    |
+| `src/controllers/base.controller.ts` | Base controller with utilities        |
+| `src/controllers/*.controller.ts`    | Individual domain controllers         |
+| `src/generated/routes.ts`            | tsoa-generated Express routes         |
+| `src/generated/swagger.json`         | Generated OpenAPI 3.0 spec            |
+| `scripts/clean.mjs`                  | Native fs.rm() replacement for rimraf |
+
+## Related ADRs
+
+- [ADR-018](./0018-api-documentation-strategy.md) - API Documentation Strategy (will be updated)
+- [ADR-003](./0003-standardized-input-validation-using-middleware.md) - Input Validation (Zod integration)
+- [ADR-028](./0028-api-response-standardization.md) - Response Standardization (BaseController pattern)
+- [ADR-001](./0001-standardized-error-handling.md) - Error Handling (error utilities in BaseController)

docs/adr/0060-typescript-test-error-remediation.md

@@ -0,0 +1,471 @@
+# ADR-060: TypeScript Test Error Remediation Strategy
+
+**Date**: 2026-02-17
+
+**Status**: Implemented
+
+**Completed**: 2026-02-17
+
+**Context**: Systematic remediation of 185 TypeScript errors in test files following API response standardization (ADR-028) and tsoa migration (ADR-059)
+
+## Implementation Summary
+
+This ADR has been fully implemented. The remediation project achieved:
+
+| Metric               | Value                                       |
+| -------------------- | ------------------------------------------- |
+| Initial Errors       | 185                                         |
+| Final Errors         | 0                                           |
+| Files Modified       | 19 controller test files + shared utilities |
+| Test Suite           | 4,603 passed, 59 failed (all pre-existing)  |
+| Net Test Improvement | +3 tests fixed                              |
+
+### Implementation Phases Completed
+
+| Phase                       | Duration  | Errors Fixed                       |
+| --------------------------- | --------- | ---------------------------------- |
+| Phase 1: Foundation         | Completed | Infrastructure (enables all fixes) |
+| Phase 2-4: Parallel Tasks   | 3 rounds  | 185 -> 114 -> 67 -> 23 -> 0        |
+| Phase 5: Final Verification | Completed | All type-check passes              |
+
+### Artifacts Created
+
+1. **Shared Test Utilities** (`src/tests/utils/testHelpers.ts`):
+   - `asSuccessResponse<T>()` - Type guard for success responses
+   - `asErrorResponse()` - Type guard for error responses
+   - `asMock<T>()` - Mock function type casting
+   - Re-export of `createMockLogger`
+
+2. **Mock Logger** (`src/tests/utils/mockLogger.ts`):
+   - `createMockLogger()` - Complete Pino logger mock
+   - `mockLogger` - Pre-instantiated mock for convenience
+
+3. **Updated Mock Factories** (`src/tests/utils/mockFactories.ts`):
+   - 60+ type-safe mock factory functions
+   - Deterministic ID generation with `getNextId()`
+   - Complete type coverage for all domain entities
+
+## Context
+
+Following the implementation of ADR-028 (API Response Standardization) and ADR-059 (tsoa Migration), 185 TypeScript errors accumulated in test files. The errors stem from stricter type checking on API response handling, mock type mismatches, and response body access patterns. This ADR documents the systematic analysis, categorization, and phased remediation approach.
+
+### Error Distribution
+
+| Category                        | Count | Percentage |
+| ------------------------------- | ----- | ---------- |
+| SuccessResponse type narrowing  | 89    | 48.1%      |
+| Mock object type casting        | 42    | 22.7%      |
+| Response body property access   | 28    | 15.1%      |
+| Partial mock missing properties | 18    | 9.7%       |
+| Generic type parameter issues   | 5     | 2.7%       |
+| Module import type issues       | 3     | 1.6%       |
+
+### Root Cause Analysis
+
+1. **SuccessResponse Discriminated Union**: ADR-028 introduced `ApiSuccessResponse<T> | ApiErrorResponse` union types. Tests accessing `response.body.data` without type guards trigger TS2339 errors.
+
+2. **Mock Type Strictness**: Vitest mocks return `MockedFunction<T>` types. Passing to functions expecting exact signatures requires explicit casting.
+
+3. **Partial<T> vs Full Object**: Factory functions creating partial mocks lack required properties. Tests using spread operators without type assertions fail property access.
+
+4. **Response Body Type Unknown**: Supertest `response.body` is typed as `unknown` or `any`. Direct property access without narrowing violates strict mode.
+
+## Decision
+
+Implement a 5-phase remediation strategy with parallelizable tasks, prioritized by error count per file and criticality.
+
+### Phase 1: High-Impact Infrastructure (Est. 2 hours)
+
+**Goal**: Fix foundational patterns that propagate to multiple files.
+
+| Task                                                  | Files                              | Errors Fixed     |
+| ----------------------------------------------------- | ---------------------------------- | ---------------- |
+| Add `asSuccessResponse<T>()` type guard to test utils | `src/tests/utils/testHelpers.ts`   | Enables 89 fixes |
+| Add `asMock<T>()` utility for mock casting            | `src/tests/utils/testHelpers.ts`   | Enables 42 fixes |
+| Update mock factories with strict return types        | `src/tests/utils/mockFactories.ts` | 18               |
+
+**Type Guard Implementation**:
+
+```typescript
+// src/tests/utils/testHelpers.ts
+
+import { ApiSuccessResponse, ApiErrorResponse } from '@/types/api';
+
+/**
+ * Type guard to narrow supertest response body to ApiSuccessResponse.
+ * Use when accessing .data property on API responses in tests.
+ *
+ * @example
+ * const response = await request.get('/api/v1/users/1');
+ * const body = asSuccessResponse<User>(response.body);
+ * expect(body.data.id).toBe(1); // TypeScript knows body.data exists
+ */
+export function asSuccessResponse<T>(body: unknown): ApiSuccessResponse<T> {
+  const parsed = body as ApiSuccessResponse<T> | ApiErrorResponse;
+  if (parsed.success !== true) {
+    throw new Error(`Expected success response, got: ${JSON.stringify(parsed)}`);
+  }
+  return parsed;
+}
+
+/**
+ * Type guard for error responses.
+ */
+export function asErrorResponse(body: unknown): ApiErrorResponse {
+  const parsed = body as ApiSuccessResponse<unknown> | ApiErrorResponse;
+  if (parsed.success !== false) {
+    throw new Error(`Expected error response, got: ${JSON.stringify(parsed)}`);
+  }
+  return parsed;
+}
+
+/**
+ * Cast Vitest mock to specific function type.
+ * Use when passing mocked functions to code expecting exact signatures.
+ *
+ * @example
+ * const mockFn = vi.fn();
+ * someService.register(asMock<UserService['create']>(mockFn));
+ */
+export function asMock<T extends (...args: unknown[]) => unknown>(
+  mock: ReturnType<typeof vi.fn>,
+): T {
+  return mock as unknown as T;
+}
+```
+
+### Phase 2: Route Test Files (Est. 3 hours)
+
+**Priority**: Files with 10+ errors first.
+
+| File                                      | Errors | Pattern                                |
+| ----------------------------------------- | ------ | -------------------------------------- |
+| `src/routes/flyer.routes.test.ts`         | 24     | Response body narrowing                |
+| `src/routes/user.routes.test.ts`          | 18     | Response body narrowing                |
+| `src/routes/auth.routes.test.ts`          | 15     | Response body narrowing                |
+| `src/routes/recipe.routes.test.ts`        | 12     | Response body narrowing                |
+| `src/routes/shopping-list.routes.test.ts` | 11     | Response body narrowing                |
+| `src/routes/notification.routes.test.ts`  | 9      | Response body narrowing                |
+| `src/routes/inventory.routes.test.ts`     | 8      | Response body narrowing                |
+| `src/routes/budget.routes.test.ts`        | 7      | Response body narrowing                |
+| `src/routes/admin.routes.test.ts`         | 6      | Response body narrowing + mock casting |
+
+**Fix Pattern**:
+
+```typescript
+// BEFORE (TS2339: Property 'data' does not exist on type 'unknown')
+const response = await request.get('/api/v1/flyers/1');
+expect(response.body.data.flyer_id).toBe(1);
+
+// AFTER
+import { asSuccessResponse } from '@/tests/utils/testHelpers';
+import { Flyer } from '@/types/flyer';
+
+const response = await request.get('/api/v1/flyers/1');
+const body = asSuccessResponse<Flyer>(response.body);
+expect(body.data.flyer_id).toBe(1);
+```
+
+### Phase 3: Service Test Files (Est. 2 hours)
+
+**Priority**: Mock casting issues.
+
+| File                                              | Errors | Pattern            |
+| ------------------------------------------------- | ------ | ------------------ |
+| `src/services/db/flyer.db.test.ts`                | 8      | Pool mock typing   |
+| `src/services/db/user.db.test.ts`                 | 7      | Pool mock typing   |
+| `src/services/aiService.server.test.ts`           | 6      | Gemini mock typing |
+| `src/services/cacheService.server.test.ts`        | 5      | Redis mock typing  |
+| `src/services/notificationService.server.test.ts` | 4      | Queue mock typing  |
+
+**Mock Casting Pattern**:
+
+```typescript
+// BEFORE (TS2345: Argument of type 'Mock' is not assignable)
+const mockPool = { query: vi.fn() };
+const service = new FlyerService(mockPool);
+
+// AFTER
+import { Pool } from 'pg';
+
+const mockPool = {
+  query: vi.fn().mockResolvedValue({ rows: [], rowCount: 0 }),
+} as unknown as Pool;
+const service = new FlyerService(mockPool);
+```
+
+### Phase 4: Integration Test Files (Est. 1.5 hours)
+
+| File                                              | Errors | Pattern                 |
+| ------------------------------------------------- | ------ | ----------------------- |
+| `src/tests/integration/flyer.integration.test.ts` | 6      | Response body + cleanup |
+| `src/tests/integration/auth.integration.test.ts`  | 5      | Response body           |
+| `src/tests/integration/user.integration.test.ts`  | 4      | Response body           |
+| `src/tests/integration/admin.integration.test.ts` | 4      | Response body           |
+
+**Integration Test Pattern**:
+
+```typescript
+// Establish typed response helper at top of file
+const expectSuccess = <T>(response: Response) => {
+  expect(response.status).toBeLessThan(400);
+  return asSuccessResponse<T>(response.body);
+};
+
+// Usage
+const body = expectSuccess<{ token: string }>(response);
+expect(body.data.token).toBeDefined();
+```
+
+### Phase 5: Component and Hook Tests (Est. 1.5 hours)
+
+| File                          | Errors | Pattern             |
+| ----------------------------- | ------ | ------------------- |
+| `src/hooks/useFlyers.test.ts` | 3      | MSW response typing |
+| `src/hooks/useAuth.test.ts`   | 3      | MSW response typing |
+| Various component tests       | 8      | Mock prop typing    |
+
+**MSW Handler Pattern**:
+
+```typescript
+// BEFORE
+http.get('/api/v1/flyers', () => {
+  return HttpResponse.json({ data: [mockFlyer] });
+});
+
+// AFTER
+import { ApiSuccessResponse } from '@/types/api';
+import { Flyer } from '@/types/flyer';
+
+http.get('/api/v1/flyers', () => {
+  const response: ApiSuccessResponse<Flyer[]> = {
+    success: true,
+    data: [mockFlyer],
+  };
+  return HttpResponse.json(response);
+});
+```
+
+## Implementation Guidelines
+
+### 1. Mock Object Casting Hierarchy
+
+Use the least permissive cast that satisfies TypeScript:
+
+```typescript
+// Level 1: Type assertion for compatible shapes
+const mock = createMockUser() as User;
+
+// Level 2: Unknown bridge for incompatible shapes
+const mock = partialMock as unknown as User;
+
+// Level 3: Partial with required overrides
+const mock: User = { ...createPartialUser(), id: 1, email: 'test@test.com' };
+```
+
+### 2. Response Type Narrowing
+
+**Always narrow before property access**:
+
+```typescript
+// Standard pattern
+const body = asSuccessResponse<ExpectedType>(response.body);
+expect(body.data.property).toBe(value);
+
+// With error expectation
+expect(response.status).toBe(400);
+const body = asErrorResponse(response.body);
+expect(body.error.code).toBe('VALIDATION_ERROR');
+```
+
+### 3. Mock Function Type Safety
+
+```typescript
+// vi.fn() with implementation type
+const mockFn = vi.fn<[string], Promise<User>>().mockResolvedValue(mockUser);
+
+// Mocked module function
+vi.mock('@/services/userService');
+const mockedService = vi.mocked(userService);
+mockedService.create.mockResolvedValue(mockUser);
+```
+
+### 4. Generic Type Parameters
+
+When TypeScript cannot infer generics, provide explicit parameters:
+
+```typescript
+// Explicit generic on factory
+const mock = createMockPaginatedResponse<Flyer>({ data: [mockFlyer] });
+
+// Explicit generic on assertion
+expect(result).toEqual<ApiSuccessResponse<User>>({
+  success: true,
+  data: mockUser,
+});
+```
+
+## Parallelization Strategy
+
+### Parallel Execution Groups
+
+Tests can be fixed in parallel within these independent groups:
+
+| Group | Files                                             | Dependencies      |
+| ----- | ------------------------------------------------- | ----------------- |
+| A     | Route tests (auth, user, flyer)                   | Phase 1 utilities |
+| B     | Route tests (recipe, shopping-list, notification) | Phase 1 utilities |
+| C     | Service tests (db layer)                          | None              |
+| D     | Service tests (external services)                 | None              |
+| E     | Integration tests                                 | Phase 1 utilities |
+| F     | Component/hook tests                              | None              |
+
+**Dependency Graph**:
+
+```
+Phase 1 (Infrastructure)
+    │
+    ├── Group A ─┐
+    ├── Group B ─┼── Can run in parallel
+    └── Group E ─┘
+
+Groups C, D, F have no dependencies (can start immediately)
+```
+
+### Critical Path
+
+Minimum time to completion: **Phase 1 (2h) + longest parallel group (1.5h) = 3.5 hours**
+
+Sequential worst case: **10 hours** (if no parallelization)
+
+## Testing Strategy
+
+### Execution Environment
+
+**All tests MUST run in the dev container** per ADR-014:
+
+```bash
+# Type check (fast verification)
+podman exec -it flyer-crawler-dev npm run type-check
+
+# Unit tests (after type check passes)
+podman exec -it flyer-crawler-dev npm run test:unit
+
+# Full suite (final verification)
+podman exec -it flyer-crawler-dev npm test
+```
+
+### Background Job Execution (MCP)
+
+For long-running test suites, use the MCP background-job tools:
+
+```bash
+# Estimate duration first
+mcp__background-job__estimate_command_duration("npm run type-check")
+
+# Execute in background
+mcp__background-job__execute_command("npm run type-check")
+
+# Poll status per guidelines (15-30s intervals)
+mcp__background-job__get_job_status(job_id)
+```
+
+### Incremental Verification
+
+After each phase, verify:
+
+1. **Type check passes**: `npm run type-check` exits 0
+2. **Affected tests pass**: Run specific test file
+3. **No regressions**: Run full unit suite
+
+## Consequences
+
+### Positive
+
+1. **Type Safety**: All test files will have proper TypeScript coverage
+2. **IDE Support**: IntelliSense works correctly for response bodies
+3. **Refactoring Safety**: Type errors will catch API contract changes
+4. **Pattern Consistency**: Established patterns for future test writing
+5. **Reusable Utilities**: `asSuccessResponse`, `asMock` utilities for all tests
+
+### Negative
+
+1. **Verbosity**: Tests require explicit type narrowing (2-3 extra lines)
+2. **Maintenance**: Type parameters must match actual API responses
+3. **Learning Curve**: Contributors must learn type guard patterns
+
+### Neutral
+
+1. **Test Execution**: No runtime performance impact (compile-time only)
+2. **Coverage**: No change to test coverage metrics
+
+## File Priority Matrix
+
+### By Error Count (Descending)
+
+| Priority | File                                      | Errors         |
+| -------- | ----------------------------------------- | -------------- |
+| P0       | `src/tests/utils/testHelpers.ts`          | Infrastructure |
+| P0       | `src/tests/utils/mockFactories.ts`        | 18             |
+| P1       | `src/routes/flyer.routes.test.ts`         | 24             |
+| P1       | `src/routes/user.routes.test.ts`          | 18             |
+| P1       | `src/routes/auth.routes.test.ts`          | 15             |
+| P2       | `src/routes/recipe.routes.test.ts`        | 12             |
+| P2       | `src/routes/shopping-list.routes.test.ts` | 11             |
+| P2       | `src/routes/notification.routes.test.ts`  | 9              |
+| P3       | `src/routes/inventory.routes.test.ts`     | 8              |
+| P3       | `src/services/db/flyer.db.test.ts`        | 8              |
+| P3       | `src/routes/budget.routes.test.ts`        | 7              |
+| P3       | `src/services/db/user.db.test.ts`         | 7              |
+
+### By Criticality (Business Impact)
+
+| Tier     | Files                       | Rationale              |
+| -------- | --------------------------- | ---------------------- |
+| Critical | auth, user routes           | Authentication flows   |
+| High     | flyer, shopping-list routes | Core business features |
+| Medium   | recipe, budget, inventory   | Secondary features     |
+| Low      | admin, notification         | Support features       |
+
+## Migration Checklist
+
+### Pre-Remediation
+
+- [x] Read this ADR and understand patterns
+- [x] Verify dev container is running
+- [x] Run `npm run type-check` to confirm error count
+- [x] Create working branch
+
+### During Remediation
+
+- [x] Implement Phase 1 infrastructure utilities
+- [x] Fix highest-error files first within each phase
+- [x] Run type-check after each file fix
+- [x] Run specific test file to verify no runtime breaks
+
+### Post-Remediation
+
+- [x] Run full type-check: `npm run type-check` (0 errors)
+- [x] Run unit tests: `npm run test:unit` (4,603 passed)
+- [x] Run integration tests: `npm run test:integration`
+- [x] Update ADR status to Implemented
+
+## Related ADRs
+
+- [ADR-010](./0010-testing-strategy-and-standards.md) - Testing Strategy and Standards
+- [ADR-014](./0014-containerization-and-deployment-strategy.md) - Platform: Linux Only
+- [ADR-028](./0028-api-response-standardization.md) - API Response Standardization
+- [ADR-045](./0045-test-data-factories-and-fixtures.md) - Test Data Factories and Fixtures
+- [ADR-057](./0057-test-remediation-post-api-versioning.md) - Test Remediation Post-API Versioning
+- [ADR-059](./0059-dependency-modernization.md) - Dependency Modernization (tsoa Migration)
+
+## Key Files
+
+| File                               | Purpose                                                 |
+| ---------------------------------- | ------------------------------------------------------- |
+| `src/tests/utils/testHelpers.ts`   | Type guard utilities (`asSuccessResponse`, `asMock`)    |
+| `src/tests/utils/mockFactories.ts` | Typed mock object factories                             |
+| `src/types/api.ts`                 | `ApiSuccessResponse<T>`, `ApiErrorResponse` definitions |
+| `src/utils/apiResponse.ts`         | `sendSuccess()`, `sendError()` implementations          |
+| `vite.config.ts`                   | Unit test TypeScript configuration                      |
+| `vitest.config.integration.ts`     | Integration test TypeScript configuration               |

docs/adr/0061-pm2-process-isolation-safeguards.md

@@ -0,0 +1,199 @@
+# ADR-061: PM2 Process Isolation Safeguards
+
+## Status
+
+Accepted
+
+## Context
+
+On 2026-02-17, a critical incident occurred during v0.15.0 production deployment where ALL PM2 processes on the production server were terminated, not just flyer-crawler processes. This caused unplanned downtime for multiple applications including `stock-alert.projectium.com`.
+
+### Problem Statement
+
+Production and test environments share the same PM2 daemon on the server. This creates a risk where deployment scripts that operate on PM2 processes can accidentally affect processes belonging to other applications or environments.
+
+### Pre-existing Controls
+
+Prior to the incident, PM2 process isolation controls were already in place (commit `b6a62a0`):
+
+- Production workflows used whitelist-based filtering with explicit process names
+- Test workflows filtered by `-test` suffix pattern
+- CLAUDE.md documented the prohibition of `pm2 stop all`, `pm2 delete all`, and `pm2 restart all`
+
+Despite these controls being present in the codebase and included in v0.15.0, the incident still occurred. The leading hypothesis is that the Gitea runner executed a cached/older version of the workflow file.
+
+### Requirements
+
+1. Prevent accidental deletion of processes from other applications or environments
+2. Provide audit trail for forensic analysis when incidents occur
+3. Enable automatic abort when dangerous conditions are detected
+4. Maintain visibility into PM2 operations during deployment
+5. Work correctly even if the filtering logic itself is bypassed
+
+## Decision
+
+Implement a defense-in-depth strategy with 5 layers of safeguards in all deployment workflows that interact with PM2 processes.
+
+### Safeguard Layers
+
+#### Layer 1: Workflow Metadata Logging
+
+Log workflow execution metadata at the start of each deployment:
+
+```bash
+echo "=== WORKFLOW METADATA ==="
+echo "Workflow file: deploy-to-prod.yml"
+echo "Workflow file hash: $(sha256sum .gitea/workflows/deploy-to-prod.yml | cut -d' ' -f1)"
+echo "Git commit: $(git rev-parse HEAD)"
+echo "Git branch: $(git rev-parse --abbrev-ref HEAD)"
+echo "Timestamp: $(date -u '+%Y-%m-%d %H:%M:%S UTC')"
+echo "Actor: ${{ gitea.actor }}"
+echo "=== END METADATA ==="
+```
+
+**Purpose**: Enables verification of which workflow version was actually executed.
+
+#### Layer 2: Pre-Cleanup PM2 State Logging
+
+Capture full PM2 process list before any modifications:
+
+```bash
+echo "=== PRE-CLEANUP PM2 STATE ==="
+pm2 jlist
+echo "=== END PRE-CLEANUP STATE ==="
+```
+
+**Purpose**: Provides forensic evidence of system state before cleanup.
+
+#### Layer 3: Process Count Validation (SAFETY ABORT)
+
+Abort deployment if the filter would delete ALL processes and there are more than 3 processes total:
+
+```javascript
+const totalProcesses = list.length;
+if (targetProcesses.length === totalProcesses && totalProcesses > 3) {
+  console.error('SAFETY ABORT: Filter would delete ALL processes!');
+  console.error(
+    'Total processes: ' + totalProcesses + ', Target processes: ' + targetProcesses.length,
+  );
+  process.exit(1);
+}
+```
+
+**Purpose**: Catches filter bugs or unexpected conditions automatically.
+
+**Threshold Rationale**: A threshold of 3 allows normal operation when only the expected processes exist (API, Worker, Analytics Worker) while catching anomalies when the server hosts additional applications.
+
+#### Layer 4: Explicit Name Verification
+
+Log the exact name, status, and PM2 ID of each process that will be affected:
+
+```javascript
+console.log('Found ' + targetProcesses.length + ' PRODUCTION processes to clean:');
+targetProcesses.forEach((p) => {
+  console.log(
+    '  - ' + p.name + ' (status: ' + p.pm2_env.status + ', pm_id: ' + p.pm2_env.pm_id + ')',
+  );
+});
+```
+
+**Purpose**: Provides clear visibility into cleanup operations.
+
+#### Layer 5: Post-Cleanup Verification
+
+After cleanup, verify environment isolation was maintained:
+
+```bash
+echo "=== POST-CLEANUP VERIFICATION ==="
+pm2 jlist | node -e "
+  const list = JSON.parse(require('fs').readFileSync(0, 'utf-8'));
+  const prodProcesses = list.filter(p => p.name && p.name.startsWith('flyer-crawler-') && !p.name.endsWith('-test'));
+  console.log('Production processes after cleanup: ' + prodProcesses.length);
+"
+echo "=== END POST-CLEANUP VERIFICATION ==="
+```
+
+**Purpose**: Immediately identifies cross-environment contamination.
+
+## Consequences
+
+### Positive
+
+1. **Automatic Prevention**: Layer 3 (process count validation) can prevent catastrophic process deletion automatically, without human intervention.
+
+2. **Forensic Capability**: Layers 1 and 2 provide the data needed to determine root cause after an incident.
+
+3. **Visibility**: Layers 4 and 5 make PM2 operations transparent in workflow logs.
+
+4. **Fail-Safe Design**: Even if individual layers fail, other layers provide backup protection.
+
+5. **Non-Breaking**: Safeguards are additive and do not change the existing filtering logic.
+
+### Negative
+
+1. **Increased Log Volume**: Additional logging increases workflow output size.
+
+2. **Minor Performance Impact**: Extra PM2 commands add a few seconds to deployment time.
+
+3. **Threshold Tuning**: The threshold of 3 may need adjustment if the expected process count changes.
+
+### Neutral
+
+1. **Root Cause Still Unknown**: These safeguards mitigate the risk but do not definitively explain why the original incident occurred.
+
+2. **No Structural Changes**: The underlying architecture (shared PM2 daemon) remains unchanged.
+
+## Alternatives Considered
+
+### PM2 Namespaces
+
+PM2 supports namespaces to isolate groups of processes. This would provide complete isolation but requires:
+
+- Changes to ecosystem config files
+- Changes to all PM2 commands in workflows
+- Potential breaking changes to monitoring and log aggregation
+
+**Decision**: Deferred for future consideration. Current safeguards provide adequate protection.
+
+### Separate PM2 Daemons
+
+Running a separate PM2 daemon per application would eliminate cross-application risk entirely.
+
+**Decision**: Not implemented due to increased operational complexity and the current safeguards being sufficient.
+
+### Deployment Locks
+
+Implementing mutex-style locks to prevent concurrent deployments could prevent race conditions.
+
+**Decision**: Not implemented as the current safeguards address the identified risk. May be reconsidered if concurrent deployment issues are observed.
+
+## Implementation
+
+### Files Modified
+
+| File                                       | Changes                |
+| ------------------------------------------ | ---------------------- |
+| `.gitea/workflows/deploy-to-prod.yml`      | All 5 safeguard layers |
+| `.gitea/workflows/deploy-to-test.yml`      | All 5 safeguard layers |
+| `.gitea/workflows/manual-deploy-major.yml` | All 5 safeguard layers |
+
+### Validation
+
+A standalone test file validates the safeguard logic:
+
+- **File**: `tests/qa/test-pm2-safeguard-logic.js`
+- **Coverage**: 11 scenarios covering normal operations and dangerous edge cases
+- **Result**: All tests pass
+
+## Related Documentation
+
+- [Incident Report: 2026-02-17](../operations/INCIDENT-2026-02-17-PM2-PROCESS-KILL.md)
+- [PM2 Incident Response Runbook](../operations/PM2-INCIDENT-RESPONSE.md)
+- [Session Summary](../archive/sessions/PM2_SAFEGUARDS_SESSION_2026-02-17.md)
+- [CLAUDE.md - PM2 Process Isolation](../../CLAUDE.md#pm2-process-isolation-productiontest-servers)
+- [ADR-014: Containerization and Deployment Strategy](0014-containerization-and-deployment-strategy.md)
+
+## References
+
+- PM2 Documentation: https://pm2.keymetrics.io/docs/usage/application-declaration/
+- Defense in Depth: https://en.wikipedia.org/wiki/Defense_in_depth_(computing)

docs/adr/ADR-027-application-wide-structured-logging.md

@@ -0,0 +1,265 @@
+# ADR-027: Standardized Application-Wide Structured Logging
+
+**Date**: 2026-02-10
+
+**Status**: Accepted
+
+**Source**: Imported from flyer-crawler project (ADR-004)
+
+**Related**: [ADR-017](ADR-017-structured-logging-with-pino.md), [ADR-028](ADR-028-client-side-structured-logging.md), [ADR-029](ADR-029-error-tracking-with-bugsink.md)
+
+## Context
+
+While ADR-017 established Pino as our logging framework, this ADR extends that foundation with application-wide standards for request tracing, context propagation, and structured log formats.
+
+The implementation of logging can vary significantly across different modules. The error handler middleware may produce high-quality, structured JSON logs for errors, but logging within route handlers and service layers can become ad-hoc, using plain strings or inconsistent object structures.
+
+This inconsistency leads to several problems:
+
+- **Difficult Debugging**: It is hard to trace a single user request through the system or correlate events related to a specific operation
+- **Ineffective Log Analysis**: Inconsistent log formats make it difficult to effectively query, filter, and create dashboards in log management systems (like Datadog, Splunk, or the ELK stack)
+- **Security Risks**: There is no enforced standard for redacting sensitive information (like passwords or tokens) in logs outside of the error handler, increasing the risk of accidental data exposure
+- **Missing Context**: Logs often lack crucial context, such as a unique request ID, the authenticated user's ID, or the source IP address, making them less useful for diagnosing issues
+
+## Decision
+
+We will adopt a standardized, application-wide structured logging policy. All log entries MUST be in JSON format and adhere to a consistent schema.
+
+### 1. Request-Scoped Logger with Context
+
+We will create a middleware that runs at the beginning of the request lifecycle. This middleware will:
+
+- Generate a unique `request_id` for each incoming request
+- Create a request-scoped logger instance (a "child logger") that automatically includes the `request_id`, `user_id` (if authenticated), and `ip_address` in every log message it generates
+- Attach this child logger to the `req` object (e.g., `req.log`)
+
+### 2. Mandatory Use of Request-Scoped Logger
+
+All route handlers and any service functions called by them **MUST** use the request-scoped logger (`req.log`) instead of the global logger instance. This ensures all logs for a given request are automatically correlated.
+
+### 3. Standardized Log Schema
+
+All log messages should follow a base schema. The logger configuration will be updated to enforce this.
+
+**Base Fields**: `level`, `timestamp`, `message`, `request_id`, `user_id`, `ip_address`
+
+**Error Fields**: When logging an error, the log entry MUST include an `error` object with `name`, `message`, and `stack`.
+
+### 4. Standardized Logging Practices
+
+| Level | HTTP Status | Scenario                                           |
+| ----- | ----------- | -------------------------------------------------- |
+| DEBUG | Any         | Request incoming, internal state, development info |
+| INFO  | 2xx         | Successful requests, business events               |
+| WARN  | 4xx         | Client errors, validation failures, not found      |
+| ERROR | 5xx         | Server errors, unhandled exceptions                |
+
+## Implementation Details
+
+### Logger Configuration
+
+Located in `src/services/logger.server.ts`:
+
+```typescript
+import pino from 'pino';
+
+const isProduction = process.env.NODE_ENV === 'production';
+const isTest = process.env.NODE_ENV === 'test';
+
+export const logger = pino({
+  level: isProduction ? 'info' : 'debug',
+  transport:
+    isProduction || isTest
+      ? undefined
+      : {
+          target: 'pino-pretty',
+          options: {
+            colorize: true,
+            translateTime: 'SYS:standard',
+            ignore: 'pid,hostname',
+          },
+        },
+  redact: {
+    paths: [
+      'req.headers.authorization',
+      'req.headers.cookie',
+      '*.body.password',
+      '*.body.newPassword',
+      '*.body.currentPassword',
+      '*.body.confirmPassword',
+      '*.body.refreshToken',
+      '*.body.token',
+    ],
+    censor: '[REDACTED]',
+  },
+});
+```
+
+### Request Logger Middleware
+
+Located in `server.ts`:
+
+```typescript
+import { randomUUID } from 'crypto';
+import type { Request, Response, NextFunction } from 'express';
+import { logger } from './services/logger.server';
+
+const requestLogger = (req: Request, res: Response, next: NextFunction) => {
+  const requestId = randomUUID();
+  const user = req.user as UserProfile | undefined;
+  const start = process.hrtime();
+
+  // Create request-scoped logger
+  req.log = logger.child({
+    request_id: requestId,
+    user_id: user?.user.user_id,
+    ip_address: req.ip,
+  });
+
+  req.log.debug({ method: req.method, originalUrl: req.originalUrl }, 'INCOMING');
+
+  res.on('finish', () => {
+    const duration = getDurationInMilliseconds(start);
+    const { statusCode, statusMessage } = res;
+    const logDetails = {
+      user_id: (req.user as UserProfile | undefined)?.user.user_id,
+      method: req.method,
+      originalUrl: req.originalUrl,
+      statusCode,
+      statusMessage,
+      duration: duration.toFixed(2),
+    };
+
+    // Include request details for failed requests (for debugging)
+    if (statusCode >= 400) {
+      logDetails.req = { headers: req.headers, body: req.body };
+    }
+
+    if (statusCode >= 500) req.log.error(logDetails, 'Request completed with server error');
+    else if (statusCode >= 400) req.log.warn(logDetails, 'Request completed with client error');
+    else req.log.info(logDetails, 'Request completed successfully');
+  });
+
+  next();
+};
+
+app.use(requestLogger);
+```
+
+### TypeScript Support
+
+The `req.log` property is typed via declaration merging in `src/types/express.d.ts`:
+
+```typescript
+import { Logger } from 'pino';
+
+declare global {
+  namespace Express {
+    export interface Request {
+      log: Logger;
+    }
+  }
+}
+```
+
+### Automatic Sensitive Data Redaction
+
+The Pino logger automatically redacts sensitive fields:
+
+```json
+// Before redaction
+{
+  "body": {
+    "email": "user@example.com",
+    "password": "secret123",
+    "newPassword": "newsecret456"
+  }
+}
+
+// After redaction (in logs)
+{
+  "body": {
+    "email": "user@example.com",
+    "password": "[REDACTED]",
+    "newPassword": "[REDACTED]"
+  }
+}
+```
+
+### Service Layer Logging
+
+Services accept the request-scoped logger as an optional parameter:
+
+```typescript
+export async function registerUser(email: string, password: string, reqLog?: Logger) {
+  const log = reqLog || logger; // Fall back to global logger
+
+  log.info({ email }, 'Registering new user');
+  // ... implementation
+
+  log.debug({ userId: user.user_id }, 'User created successfully');
+  return user;
+}
+
+// In route handler
+router.post('/register', async (req, res, next) => {
+  await authService.registerUser(req.body.email, req.body.password, req.log);
+});
+```
+
+### Log Output Format
+
+**Development** (pino-pretty):
+
+```text
+[2026-01-09 12:34:56.789] INFO (request_id=abc123): Request completed successfully
+    method: "GET"
+    originalUrl: "/api/users"
+    statusCode: 200
+    duration: "45.23"
+```
+
+**Production** (JSON):
+
+```json
+{
+  "level": 30,
+  "time": 1704812096789,
+  "request_id": "abc123",
+  "user_id": "user_456",
+  "ip_address": "192.168.1.1",
+  "method": "GET",
+  "originalUrl": "/api/users",
+  "statusCode": 200,
+  "duration": "45.23",
+  "msg": "Request completed successfully"
+}
+```
+
+## Consequences
+
+### Positive
+
+- **Enhanced Observability**: Every log line from a single request can be instantly grouped and analyzed, dramatically speeding up debugging
+- **Improved Security**: Centralizing the addition of context (like `user_id`) reduces the chance of developers manually logging sensitive data
+- **Scalable Log Management**: Consistent JSON logs are easily ingested and indexed by any modern log aggregation tool
+- **Clearer Code**: Removes the need to manually pass contextual information (like user ID) down to service functions just for logging purposes
+
+### Negative
+
+- **Refactoring Effort**: Requires adding the `requestLogger` middleware and refactoring all routes and services to use `req.log` instead of the global `logger`
+- **Slight Performance Overhead**: Creating a child logger for every request adds a minor performance cost, though this is negligible for most modern logging libraries
+
+## Key Files
+
+- `src/services/logger.server.ts` - Pino logger configuration
+- `src/services/logger.client.ts` - Client-side logger (for frontend)
+- `src/types/express.d.ts` - TypeScript declaration for `req.log`
+- `server.ts` - Request logger middleware
+
+## References
+
+- [ADR-017: Structured Logging with Pino](ADR-017-structured-logging-with-pino.md)
+- [ADR-001: Standardized Error Handling](ADR-001-standardized-error-handling.md) - Error handler uses `req.log` for error logging
+- [ADR-028: Client-Side Structured Logging](ADR-028-client-side-structured-logging.md) - Client-side logging strategy
+- [Pino Documentation](https://getpino.io/#/)

docs/adr/ADR-028-client-side-structured-logging.md

@@ -0,0 +1,242 @@
+# ADR-028: Standardized Client-Side Structured Logging
+
+**Date**: 2026-02-10
+
+**Status**: Accepted
+
+**Source**: Imported from flyer-crawler project (ADR-026)
+
+**Related**: [ADR-027](ADR-027-application-wide-structured-logging.md), [ADR-029](ADR-029-error-tracking-with-bugsink.md)
+
+## Context
+
+Following the standardization of backend logging in ADR-027, it is clear that our frontend components also require a consistent logging strategy. Currently, components either use `console.log` directly or a simple wrapper, but without a formal standard, this can lead to inconsistent log formats and difficulty in debugging user-facing issues.
+
+While the frontend does not have the concept of a "request-scoped" logger, the principles of structured, context-rich logging are equally important for:
+
+1. **Effective Debugging**: Understanding the state of a component or the sequence of user interactions that led to an error
+2. **Integration with Monitoring Tools**: Sending structured logs to services like Sentry/Bugsink or LogRocket allows for powerful analysis and error tracking in production
+3. **Clean Test Outputs**: Uncontrolled logging can pollute test runner output, making it difficult to spot actual test failures
+
+An existing client-side logger at `src/services/logger.client.ts` provides a simple, structured logging interface. This ADR formalizes its use as the application standard.
+
+## Decision
+
+We will adopt a standardized, application-wide structured logging policy for all client-side (React) code.
+
+### 1. Mandatory Use of the Global Client Logger
+
+All frontend components, hooks, and services **MUST** use the global logger singleton exported from `src/services/logger.client.ts`. Direct use of `console.log`, `console.error`, etc., is discouraged.
+
+### 2. Pino-like API for Structured Logging
+
+The client logger mimics the `pino` API, which is the standard on the backend. It supports two primary call signatures:
+
+- `logger.info('A simple message');`
+- `logger.info({ key: 'value' }, 'A message with a structured data payload');`
+
+The second signature, which includes a data object as the first argument, is **strongly preferred**, especially for logging errors or complex state.
+
+### 3. Mocking in Tests
+
+All Jest/Vitest tests for components or hooks that use the logger **MUST** mock the `src/services/logger.client.ts` module. This prevents logs from appearing in test output and allows for assertions that the logger was called correctly.
+
+## Implementation
+
+### Client Logger Service
+
+Located in `src/services/logger.client.ts`:
+
+```typescript
+type LogLevel = 'debug' | 'info' | 'warn' | 'error';
+
+interface LoggerOptions {
+  level?: LogLevel;
+  enabled?: boolean;
+}
+
+const LOG_LEVELS: Record<LogLevel, number> = {
+  debug: 0,
+  info: 1,
+  warn: 2,
+  error: 3,
+};
+
+class ClientLogger {
+  private level: LogLevel;
+  private enabled: boolean;
+
+  constructor(options: LoggerOptions = {}) {
+    this.level = options.level ?? 'info';
+    this.enabled = options.enabled ?? import.meta.env.DEV;
+  }
+
+  private shouldLog(level: LogLevel): boolean {
+    return this.enabled && LOG_LEVELS[level] >= LOG_LEVELS[this.level];
+  }
+
+  private formatMessage(data: object | string, message?: string): string {
+    if (typeof data === 'string') {
+      return data;
+    }
+    const payload = JSON.stringify(data, null, 2);
+    return message ? `${message}\n${payload}` : payload;
+  }
+
+  debug(data: object | string, message?: string): void {
+    if (this.shouldLog('debug')) {
+      console.debug(`[DEBUG] ${this.formatMessage(data, message)}`);
+    }
+  }
+
+  info(data: object | string, message?: string): void {
+    if (this.shouldLog('info')) {
+      console.info(`[INFO] ${this.formatMessage(data, message)}`);
+    }
+  }
+
+  warn(data: object | string, message?: string): void {
+    if (this.shouldLog('warn')) {
+      console.warn(`[WARN] ${this.formatMessage(data, message)}`);
+    }
+  }
+
+  error(data: object | string, message?: string): void {
+    if (this.shouldLog('error')) {
+      console.error(`[ERROR] ${this.formatMessage(data, message)}`);
+    }
+  }
+}
+
+export const logger = new ClientLogger({
+  level: import.meta.env.DEV ? 'debug' : 'warn',
+  enabled: true,
+});
+```
+
+### Example Usage
+
+**Logging an Error in a Component:**
+
+```typescript
+// In a React component or hook
+import { logger } from '../services/logger.client';
+import { notifyError } from '../services/notificationService';
+
+const fetchData = async () => {
+  try {
+    const data = await apiClient.getData();
+    return data;
+  } catch (err) {
+    // Log the full error object for context, along with a descriptive message.
+    logger.error({ err }, 'Failed to fetch component data');
+    notifyError('Something went wrong. Please try again.');
+  }
+};
+```
+
+**Logging State Changes:**
+
+```typescript
+// In a Zustand store or state hook
+import { logger } from '../services/logger.client';
+
+const useAuthStore = create((set) => ({
+  login: async (credentials) => {
+    logger.info({ email: credentials.email }, 'User login attempt');
+    try {
+      const user = await authService.login(credentials);
+      logger.info({ userId: user.id }, 'User logged in successfully');
+      set({ user, isAuthenticated: true });
+    } catch (error) {
+      logger.error({ error }, 'Login failed');
+      throw error;
+    }
+  },
+}));
+```
+
+### Mocking the Logger in Tests
+
+```typescript
+// In a *.test.tsx file
+import { vi } from 'vitest';
+
+// Mock the logger at the top of the test file
+vi.mock('../services/logger.client', () => ({
+  logger: {
+    info: vi.fn(),
+    warn: vi.fn(),
+    error: vi.fn(),
+    debug: vi.fn(),
+  },
+}));
+
+describe('MyComponent', () => {
+  beforeEach(() => {
+    vi.clearAllMocks(); // Clear mocks between tests
+  });
+
+  it('should log an error when fetching fails', async () => {
+    // ... test setup to make fetch fail ...
+
+    // Assert that the logger was called with the expected structure
+    expect(logger.error).toHaveBeenCalledWith(
+      expect.objectContaining({ err: expect.any(Error) }),
+      'Failed to fetch component data',
+    );
+  });
+});
+```
+
+## Integration with Error Tracking
+
+When using Sentry/Bugsink for error tracking (see ADR-029), the client logger can be extended to send logs as breadcrumbs:
+
+```typescript
+import * as Sentry from '@sentry/react';
+
+class ClientLogger {
+  // ... existing implementation
+
+  error(data: object | string, message?: string): void {
+    if (this.shouldLog('error')) {
+      console.error(`[ERROR] ${this.formatMessage(data, message)}`);
+    }
+
+    // Add to Sentry breadcrumbs for error context
+    Sentry.addBreadcrumb({
+      category: 'log',
+      level: 'error',
+      message: typeof data === 'string' ? data : message,
+      data: typeof data === 'object' ? data : undefined,
+    });
+  }
+}
+```
+
+## Consequences
+
+### Positive
+
+- **Consistency**: All client-side logs will have a predictable structure, making them easier to read and parse
+- **Debuggability**: Errors logged with a full object (`{ err }`) capture the stack trace and other properties, which is invaluable for debugging
+- **Testability**: Components that log are easier to test without polluting CI/CD output. We can also assert that logging occurs when expected
+- **Future-Proof**: If we later decide to send client-side logs to a remote service, we only need to modify the central `logger.client.ts` file instead of every component
+- **Error Tracking Integration**: Logs can be used as breadcrumbs in Sentry/Bugsink for better error context
+
+### Negative
+
+- **Minor Boilerplate**: Requires importing the logger in every file that needs it and mocking it in every corresponding test file. However, this is a small and consistent effort
+- **Production Noise**: Care must be taken to configure appropriate log levels in production to avoid performance impact
+
+## Key Files
+
+- `src/services/logger.client.ts` - Client-side logger implementation
+- `src/services/logger.server.ts` - Backend logger (for reference)
+
+## References
+
+- [ADR-027: Application-Wide Structured Logging](ADR-027-application-wide-structured-logging.md)
+- [ADR-029: Error Tracking with Bugsink](ADR-029-error-tracking-with-bugsink.md)
+- [Pino Documentation](https://getpino.io/#/)

docs/adr/ADR-029-error-tracking-with-bugsink.md

@@ -0,0 +1,389 @@
+# ADR-029: Error Tracking and Observability with Bugsink
+
+**Date**: 2026-02-10
+
+**Status**: Accepted
+
+**Source**: Imported from flyer-crawler project (ADR-015)
+
+**Related**: [ADR-027](ADR-027-application-wide-structured-logging.md), [ADR-028](ADR-028-client-side-structured-logging.md), [ADR-030](ADR-030-postgresql-function-observability.md), [ADR-032](ADR-032-application-performance-monitoring.md)
+
+## Context
+
+While ADR-027 established structured logging with Pino, the application lacks a high-level, aggregated view of its health and errors. It is difficult to spot trends, identify recurring issues, or be proactively notified of new types of errors.
+
+Key requirements:
+
+1. **Self-hosted**: No external SaaS dependencies for error tracking
+2. **Sentry SDK compatible**: Leverage mature, well-documented SDKs
+3. **Lightweight**: Minimal resource overhead in the dev container
+4. **Production-ready**: Same architecture works on bare-metal production servers
+5. **AI-accessible**: MCP server integration for Claude Code and other AI tools
+
+**Note**: Application Performance Monitoring (APM) and distributed tracing are covered separately in [ADR-032](ADR-032-application-performance-monitoring.md).
+
+## Decision
+
+We implement a self-hosted error tracking stack using **Bugsink** as the Sentry-compatible backend, with the following components:
+
+### 1. Error Tracking Backend: Bugsink
+
+**Bugsink** is a lightweight, self-hosted Sentry alternative that:
+
+- Runs as a single process (no Kafka, Redis, ClickHouse required)
+- Is fully compatible with Sentry SDKs
+- Supports ARM64 and AMD64 architectures
+- Can use SQLite (dev) or PostgreSQL (production)
+
+**Deployment**:
+
+- **Dev container**: Installed as a systemd service inside the container
+- **Production**: Runs as a systemd service on bare-metal, listening on localhost only
+- **Database**: Uses PostgreSQL with a dedicated `bugsink` user and `bugsink` database (same PostgreSQL instance as the main application)
+
+### 2. Backend Integration: @sentry/node
+
+The Express backend integrates `@sentry/node` SDK to:
+
+- Capture unhandled exceptions before PM2/process manager restarts
+- Report errors with full stack traces and context
+- Integrate with Pino logger for breadcrumbs
+- Filter errors by severity (only 5xx errors sent by default)
+
+### 3. Frontend Integration: @sentry/react
+
+The React frontend integrates `@sentry/react` SDK to:
+
+- Wrap the app in an Error Boundary for graceful error handling
+- Capture unhandled JavaScript errors
+- Report errors with component stack traces
+- Filter out browser extension errors
+- **Frontend Error Correlation**: The global API client intercepts 4xx/5xx responses and can attach the `x-request-id` header to Sentry scope for correlation with backend logs
+
+### 4. Log Aggregation: Logstash
+
+**Logstash** parses application and infrastructure logs, forwarding error patterns to Bugsink:
+
+- **Installation**: Installed inside the dev container (and on bare-metal prod servers)
+- **Inputs**:
+  - Pino JSON logs from the Node.js application (PM2 managed)
+  - Redis logs (connection errors, memory warnings, slow commands)
+  - PostgreSQL function logs (via `fn_log()` - see ADR-030)
+  - NGINX access/error logs
+- **Filter**: Identifies error-level logs (5xx responses, unhandled exceptions, Redis errors)
+- **Output**: Sends to Bugsink via Sentry-compatible HTTP API
+
+This provides a secondary error capture path for:
+
+- Errors that occur before Sentry SDK initialization
+- Log-based errors that do not throw exceptions
+- Redis connection/performance issues
+- Database function errors and slow queries
+- Historical error analysis from log files
+
+### 5. MCP Server Integration: bugsink-mcp
+
+For AI tool integration (Claude Code, Cursor, etc.), we use the open-source [bugsink-mcp](https://github.com/j-shelfwood/bugsink-mcp) server:
+
+- **No code changes required**: Configurable via environment variables
+- **Capabilities**: List projects, get issues, view events, get stacktraces, manage releases
+- **Configuration**:
+  - `BUGSINK_URL`: Points to Bugsink instance (`http://localhost:8000` for dev, `https://bugsink.example.com` for prod)
+  - `BUGSINK_API_TOKEN`: API token from Bugsink (created via Django management command)
+  - `BUGSINK_ORG_SLUG`: Organization identifier (usually "sentry")
+
+## Architecture
+
+```text
++---------------------------------------------------------------------------+
+|                      Dev Container / Production Server                     |
++---------------------------------------------------------------------------+
+|                                                                            |
+|  +------------------+        +------------------+                          |
+|  |    Frontend      |        |     Backend      |                          |
+|  |    (React)       |        |    (Express)     |                          |
+|  |  @sentry/react   |        |   @sentry/node   |                          |
+|  +--------+---------+        +--------+---------+                          |
+|           |                           |                                    |
+|           |    Sentry SDK Protocol    |                                    |
+|           +-----------+---------------+                                    |
+|                       |                                                    |
+|                       v                                                    |
+|           +----------------------+                                         |
+|           |      Bugsink         |                                         |
+|           |   (localhost:8000)   |<------------------+                     |
+|           |                      |                   |                     |
+|           |  PostgreSQL backend  |                   |                     |
+|           +----------------------+                   |                     |
+|                                                      |                     |
+|           +----------------------+                   |                     |
+|           |      Logstash        |-------------------+                     |
+|           |   (Log Aggregator)   |   Sentry Output                         |
+|           |                      |                                         |
+|           |  Inputs:             |                                         |
+|           |  - PM2/Pino logs     |                                         |
+|           |  - Redis logs        |                                         |
+|           |  - PostgreSQL logs   |                                         |
+|           |  - NGINX logs        |                                         |
+|           +----------------------+                                         |
+|                   ^   ^   ^   ^                                            |
+|                   |   |   |   |                                            |
+|       +-----------+   |   |   +-----------+                                |
+|       |               |   |               |                                |
+|  +----+-----+   +-----+----+   +-----+----+   +-----+----+                 |
+|  |  PM2     |   |  Redis   |   | PostgreSQL|   |  NGINX  |                 |
+|  |  Logs    |   |  Logs    |   |   Logs    |   |  Logs   |                 |
+|  +----------+   +----------+   +-----------+   +---------+                 |
+|                                                                            |
+|           +----------------------+                                         |
+|           |     PostgreSQL       |                                         |
+|           |  +----------------+  |                                         |
+|           |  | app_database   |  |  (main app database)                    |
+|           |  +----------------+  |                                         |
+|           |  |   bugsink      |  |  (error tracking database)              |
+|           |  +----------------+  |                                         |
+|           +----------------------+                                         |
+|                                                                            |
++---------------------------------------------------------------------------+
+
+External (Developer Machine):
++--------------------------------------+
+|  Claude Code / Cursor / VS Code      |
+|  +--------------------------------+  |
+|  |  bugsink-mcp                   |  |
+|  |  (MCP Server)                  |  |
+|  |                                |  |
+|  |  BUGSINK_URL=http://localhost:8000
+|  |  BUGSINK_API_TOKEN=...         |  |
+|  |  BUGSINK_ORG_SLUG=...          |  |
+|  +--------------------------------+  |
++--------------------------------------+
+```
+
+## Implementation Details
+
+### Environment Variables
+
+| Variable             | Description                      | Default (Dev)              |
+| -------------------- | -------------------------------- | -------------------------- |
+| `SENTRY_DSN`         | Sentry-compatible DSN (backend)  | Set after project creation |
+| `VITE_SENTRY_DSN`    | Sentry-compatible DSN (frontend) | Set after project creation |
+| `SENTRY_ENVIRONMENT` | Environment name                 | `development`              |
+| `SENTRY_DEBUG`       | Enable debug logging             | `false`                    |
+| `SENTRY_ENABLED`     | Enable/disable error reporting   | `true`                     |
+
+### PostgreSQL Setup
+
+```sql
+-- Create dedicated Bugsink database and user
+CREATE USER bugsink WITH PASSWORD 'bugsink_dev_password';
+CREATE DATABASE bugsink OWNER bugsink;
+GRANT ALL PRIVILEGES ON DATABASE bugsink TO bugsink;
+```
+
+### Bugsink Configuration
+
+```bash
+# Environment variables for Bugsink service
+SECRET_KEY=<random-50-char-string>
+DATABASE_URL=postgresql://bugsink:bugsink_dev_password@localhost:5432/bugsink
+BASE_URL=http://localhost:8000
+PORT=8000
+```
+
+### Backend Sentry Integration
+
+Located in `src/services/sentry.server.ts`:
+
+```typescript
+import * as Sentry from '@sentry/node';
+import { config } from '../config/env';
+
+export function initSentry() {
+  if (!config.sentry.enabled || !config.sentry.dsn) {
+    return;
+  }
+
+  Sentry.init({
+    dsn: config.sentry.dsn,
+    environment: config.sentry.environment || config.server.nodeEnv,
+    debug: config.sentry.debug,
+
+    // Performance monitoring - disabled by default (see ADR-032)
+    tracesSampleRate: 0,
+
+    // Filter out 4xx errors - only report server errors
+    beforeSend(event) {
+      const statusCode = event.contexts?.response?.status_code;
+      if (statusCode && statusCode >= 400 && statusCode < 500) {
+        return null;
+      }
+      return event;
+    },
+  });
+}
+
+// Set user context after authentication
+export function setUserContext(user: { id: string; email: string; name?: string }) {
+  Sentry.setUser({
+    id: user.id,
+    email: user.email,
+    username: user.name,
+  });
+}
+
+// Clear user context on logout
+export function clearUserContext() {
+  Sentry.setUser(null);
+}
+```
+
+### Frontend Sentry Integration
+
+Located in `src/services/sentry.client.ts`:
+
+```typescript
+import * as Sentry from '@sentry/react';
+import { config } from '../config';
+
+export function initSentry() {
+  if (!config.sentry.enabled || !config.sentry.dsn) {
+    return;
+  }
+
+  Sentry.init({
+    dsn: config.sentry.dsn,
+    environment: config.sentry.environment,
+
+    // Performance monitoring - disabled by default (see ADR-032)
+    tracesSampleRate: 0,
+
+    // Filter out browser extension errors
+    beforeSend(event) {
+      // Ignore errors from browser extensions
+      if (
+        event.exception?.values?.[0]?.stacktrace?.frames?.some((frame) =>
+          frame.filename?.includes('extension://'),
+        )
+      ) {
+        return null;
+      }
+      return event;
+    },
+  });
+}
+
+// Set user context after login
+export function setUserContext(user: { id: string; email: string; name?: string }) {
+  Sentry.setUser({
+    id: user.id,
+    email: user.email,
+    username: user.name,
+  });
+}
+
+// Clear user context on logout
+export function clearUserContext() {
+  Sentry.setUser(null);
+}
+```
+
+### Error Boundary Component
+
+Located in `src/components/ErrorBoundary.tsx`:
+
+```typescript
+import * as Sentry from '@sentry/react';
+import { Component, ErrorInfo, ReactNode } from 'react';
+
+interface Props {
+  children: ReactNode;
+  fallback?: ReactNode;
+}
+
+interface State {
+  hasError: boolean;
+}
+
+export class ErrorBoundary extends Component<Props, State> {
+  constructor(props: Props) {
+    super(props);
+    this.state = { hasError: false };
+  }
+
+  static getDerivedStateFromError(): State {
+    return { hasError: true };
+  }
+
+  componentDidCatch(error: Error, errorInfo: ErrorInfo) {
+    Sentry.withScope((scope) => {
+      scope.setExtras({ componentStack: errorInfo.componentStack });
+      Sentry.captureException(error);
+    });
+  }
+
+  render() {
+    if (this.state.hasError) {
+      return this.props.fallback || (
+        <div className="error-boundary">
+          <h1>Something went wrong</h1>
+          <p>Please refresh the page or contact support.</p>
+        </div>
+      );
+    }
+
+    return this.props.children;
+  }
+}
+```
+
+### Logstash Pipeline Configuration
+
+Key routing for log sources:
+
+| Source          | Bugsink Project |
+| --------------- | --------------- |
+| Backend (Pino)  | Backend API     |
+| Worker (Pino)   | Backend API     |
+| PostgreSQL logs | Backend API     |
+| Vite logs       | Infrastructure  |
+| Redis logs      | Infrastructure  |
+| NGINX logs      | Infrastructure  |
+| Frontend errors | Frontend        |
+
+## Consequences
+
+### Positive
+
+- **Full observability**: Aggregated view of errors and trends
+- **Self-hosted**: No external SaaS dependencies or subscription costs
+- **SDK compatibility**: Leverages mature Sentry SDKs with excellent documentation
+- **AI integration**: MCP server enables Claude Code to query and analyze errors
+- **Unified architecture**: Same setup works in dev container and production
+- **Lightweight**: Bugsink runs in a single process, unlike full Sentry (16GB+ RAM)
+- **Error correlation**: Request IDs allow correlation between frontend errors and backend logs
+
+### Negative
+
+- **Additional services**: Bugsink and Logstash add complexity to the container
+- **PostgreSQL overhead**: Additional database for error tracking
+- **Initial setup**: Requires configuration of multiple components
+- **Logstash learning curve**: Pipeline configuration requires Logstash knowledge
+
+## Alternatives Considered
+
+1. **Full Sentry self-hosted**: Rejected due to complexity (Kafka, Redis, ClickHouse, 16GB+ RAM minimum)
+2. **GlitchTip**: Considered, but Bugsink is lighter weight and easier to deploy
+3. **Sentry SaaS**: Rejected due to self-hosted requirement
+4. **Custom error aggregation**: Rejected in favor of proven Sentry SDK ecosystem
+
+## References
+
+- [Bugsink Documentation](https://www.bugsink.com/docs/)
+- [Bugsink Docker Install](https://www.bugsink.com/docs/docker-install/)
+- [@sentry/node Documentation](https://docs.sentry.io/platforms/javascript/guides/node/)
+- [@sentry/react Documentation](https://docs.sentry.io/platforms/javascript/guides/react/)
+- [bugsink-mcp](https://github.com/j-shelfwood/bugsink-mcp)
+- [Logstash Reference](https://www.elastic.co/guide/en/logstash/current/index.html)
+- [ADR-030: PostgreSQL Function Observability](ADR-030-postgresql-function-observability.md)
+- [ADR-032: Application Performance Monitoring](ADR-032-application-performance-monitoring.md)

docs/adr/ADR-030-postgresql-function-observability.md

@@ -0,0 +1,336 @@
+# ADR-030: PostgreSQL Function Observability
+
+**Date**: 2026-02-10
+
+**Status**: Accepted
+
+**Source**: Imported from flyer-crawler project (ADR-050)
+
+**Related**: [ADR-029](ADR-029-error-tracking-with-bugsink.md), [ADR-027](ADR-027-application-wide-structured-logging.md)
+
+## Context
+
+Applications often use PostgreSQL functions and triggers for business logic, including:
+
+- Data transformations and validations
+- Complex query encapsulation
+- Trigger-based side effects
+- Audit logging
+
+**Current Problem**: These database functions can fail silently in several ways:
+
+1. **`ON CONFLICT DO NOTHING`** - Swallows constraint violations without notification
+2. **`IF NOT FOUND THEN RETURN;`** - Silently exits when data is missing
+3. **Trigger functions returning `NULL`** - No indication of partial failures
+4. **No logging inside functions** - No visibility into function execution
+
+When these silent failures occur:
+
+- The application layer receives no error (function "succeeds" but does nothing)
+- No logs are generated for debugging
+- Issues are only discovered when users report missing data
+- Root cause analysis is extremely difficult
+
+**Example of Silent Failure**:
+
+```sql
+-- This function silently does nothing if record doesn't exist
+CREATE OR REPLACE FUNCTION public.process_item(p_user_id UUID, p_item_name TEXT)
+RETURNS void AS $$
+BEGIN
+    SELECT item_id INTO v_item_id FROM items WHERE name = p_item_name;
+    IF v_item_id IS NULL THEN
+        RETURN;  -- Silent failure - no log, no error
+    END IF;
+    -- ...
+END;
+$$;
+```
+
+ADR-029 established Logstash + Bugsink for error tracking, with PostgreSQL log integration. This ADR defines the implementation.
+
+## Decision
+
+We will implement a standardized PostgreSQL function observability strategy with three tiers of logging severity.
+
+### 1. Function Logging Helper
+
+Create a reusable logging function that outputs structured JSON to PostgreSQL logs:
+
+```sql
+-- Function to emit structured log messages from PL/pgSQL
+CREATE OR REPLACE FUNCTION public.fn_log(
+    p_level TEXT,           -- 'DEBUG', 'INFO', 'NOTICE', 'WARNING', 'ERROR'
+    p_function_name TEXT,   -- The calling function name
+    p_message TEXT,         -- Human-readable message
+    p_context JSONB DEFAULT NULL  -- Additional context (user_id, params, etc.)
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+    log_line TEXT;
+BEGIN
+    -- Build structured JSON log line
+    log_line := jsonb_build_object(
+        'timestamp', now(),
+        'level', p_level,
+        'source', 'postgresql',
+        'function', p_function_name,
+        'message', p_message,
+        'context', COALESCE(p_context, '{}'::jsonb)
+    )::text;
+
+    -- Use appropriate RAISE level
+    CASE p_level
+        WHEN 'DEBUG' THEN RAISE DEBUG '%', log_line;
+        WHEN 'INFO' THEN RAISE INFO '%', log_line;
+        WHEN 'NOTICE' THEN RAISE NOTICE '%', log_line;
+        WHEN 'WARNING' THEN RAISE WARNING '%', log_line;
+        WHEN 'ERROR' THEN RAISE LOG '%', log_line;  -- Use LOG for errors to ensure capture
+        ELSE RAISE NOTICE '%', log_line;
+    END CASE;
+END;
+$$;
+```
+
+### 2. Logging Tiers
+
+#### Tier 1: Critical Functions (Always Log)
+
+Functions where silent failure causes data corruption or user-facing issues:
+
+| Function Type                | Log Events                              |
+| ---------------------------- | --------------------------------------- |
+| User creation/management     | User creation, profile creation, errors |
+| Permission/role changes      | Role not found, permission denied       |
+| Financial transactions       | Transaction not found, balance issues   |
+| Data approval workflows      | Record not found, permission denied     |
+| Critical business operations | Items added, operations completed       |
+
+**Pattern**:
+
+```sql
+CREATE OR REPLACE FUNCTION public.process_critical_operation(p_user_id UUID, p_operation_name TEXT)
+RETURNS void AS $$
+DECLARE
+    v_operation_id BIGINT;
+    v_context JSONB;
+BEGIN
+    v_context := jsonb_build_object('user_id', p_user_id, 'operation_name', p_operation_name);
+
+    SELECT operation_id INTO v_operation_id
+    FROM public.operations WHERE name = p_operation_name;
+
+    IF v_operation_id IS NULL THEN
+        -- Log the issue instead of silent return
+        PERFORM fn_log('WARNING', 'process_critical_operation',
+            'Operation not found: ' || p_operation_name, v_context);
+        RETURN;
+    END IF;
+
+    -- Perform operation
+    INSERT INTO public.user_operations (user_id, operation_id)
+    VALUES (p_user_id, v_operation_id)
+    ON CONFLICT (user_id, operation_id) DO NOTHING;
+
+    IF FOUND THEN
+        PERFORM fn_log('INFO', 'process_critical_operation',
+            'Operation completed: ' || p_operation_name, v_context);
+    END IF;
+END;
+$$;
+```
+
+#### Tier 2: Business Logic Functions (Log on Anomalies)
+
+Functions where unexpected conditions should be logged but are not critical:
+
+| Function Type               | Log Events                       |
+| --------------------------- | -------------------------------- |
+| Search/suggestion functions | No match found (below threshold) |
+| Recommendation engines      | No recommendations generated     |
+| Data lookup functions       | Empty results, no matches found  |
+| Price/analytics queries     | No data available, stale data    |
+
+**Pattern**: Log when results are unexpectedly empty or inputs are invalid.
+
+#### Tier 3: Triggers (Log Errors Only)
+
+Triggers should be fast, so only log when something goes wrong:
+
+| Trigger Type          | Log Events                   |
+| --------------------- | ---------------------------- |
+| Audit triggers        | Failed to update audit trail |
+| Aggregation triggers  | Calculation failed           |
+| Cascade triggers      | Related record lookup failed |
+| Notification triggers | External service call failed |
+
+### 3. PostgreSQL Configuration
+
+Enable logging in `postgresql.conf`:
+
+```ini
+# Log all function notices and above
+log_min_messages = notice
+
+# Include function name in log prefix
+log_line_prefix = '%t [%p] %u@%d '
+
+# Log to file for Logstash pickup
+logging_collector = on
+log_directory = '/var/log/postgresql'
+log_filename = 'postgresql-%Y-%m-%d.log'
+log_rotation_age = 1d
+log_rotation_size = 100MB
+
+# Capture slow queries from functions
+log_min_duration_statement = 1000  # Log queries over 1 second
+```
+
+### 4. Logstash Integration
+
+Update the Logstash pipeline (extends ADR-029 configuration):
+
+```conf
+# PostgreSQL function log input
+input {
+  file {
+    path => "/var/log/postgresql/*.log"
+    type => "postgres"
+    tags => ["postgres"]
+    start_position => "beginning"
+    sincedb_path => "/var/lib/logstash/sincedb_postgres"
+  }
+}
+
+filter {
+  if [type] == "postgres" {
+    # Extract timestamp and process ID from PostgreSQL log prefix
+    grok {
+      match => { "message" => "%{TIMESTAMP_ISO8601:pg_timestamp} \[%{POSINT:pg_pid}\] %{USER:pg_user}@%{WORD:pg_database} %{GREEDYDATA:pg_message}" }
+    }
+
+    # Check if this is a structured JSON log from fn_log()
+    if [pg_message] =~ /^\{.*"source":"postgresql".*\}$/ {
+      json {
+        source => "pg_message"
+        target => "fn_log"
+      }
+
+      # Mark as error if level is WARNING or ERROR
+      if [fn_log][level] in ["WARNING", "ERROR"] {
+        mutate { add_tag => ["error", "db_function"] }
+      }
+    }
+
+    # Also catch native PostgreSQL errors
+    if [pg_message] =~ /^ERROR:/ or [pg_message] =~ /^FATAL:/ {
+      mutate { add_tag => ["error", "postgres_native"] }
+    }
+  }
+}
+
+output {
+  if "error" in [tags] and "postgres" in [tags] {
+    http {
+      url => "http://localhost:8000/api/store/"
+      http_method => "post"
+      format => "json"
+    }
+  }
+}
+```
+
+### 5. Dual-File Update Requirement
+
+**IMPORTANT**: All SQL function changes must be applied to BOTH files:
+
+1. `sql/Initial_triggers_and_functions.sql` - Used for incremental updates
+2. `sql/master_schema_rollup.sql` - Used for fresh database setup
+
+Both files must remain in sync for triggers and functions.
+
+## Implementation Steps
+
+1. **Create `fn_log()` helper function**:
+   - Add to both SQL files
+   - Test with `SELECT fn_log('INFO', 'test', 'Test message', '{"key": "value"}'::jsonb);`
+
+2. **Update Tier 1 critical functions** (highest priority):
+   - Identify functions with silent failures
+   - Add appropriate logging calls
+   - Test error paths
+
+3. **Update Tier 2 business logic functions**:
+   - Add anomaly logging to suggestion/recommendation functions
+   - Log empty result sets with context
+
+4. **Update Tier 3 trigger functions**:
+   - Add error-only logging to critical triggers
+   - Wrap complex trigger logic in exception handlers
+
+5. **Configure PostgreSQL logging**:
+   - Update `postgresql.conf` in dev container
+   - Update production PostgreSQL configuration
+   - Verify logs appear in expected location
+
+6. **Update Logstash pipeline**:
+   - Add PostgreSQL input to Logstash config
+   - Add filter rules for structured JSON extraction
+   - Test end-to-end: function log -> Logstash -> Bugsink
+
+7. **Verify in Bugsink**:
+   - Confirm database function errors appear as issues
+   - Verify context (user_id, function name, params) is captured
+
+## Consequences
+
+### Positive
+
+- **Visibility**: Silent failures become visible in error tracking
+- **Debugging**: Function execution context captured for root cause analysis
+- **Proactive detection**: Anomalies logged before users report issues
+- **Unified monitoring**: Database errors appear alongside application errors in Bugsink
+- **Structured logs**: JSON format enables filtering and aggregation
+
+### Negative
+
+- **Performance overhead**: Logging adds latency to function execution
+- **Log volume**: Tier 1/2 functions may generate significant log volume
+- **Maintenance**: Two SQL files must be kept in sync
+- **PostgreSQL configuration**: Requires access to `postgresql.conf`
+
+### Mitigations
+
+- **Performance**: Only log meaningful events, not every function call
+- **Log volume**: Use appropriate log levels; Logstash filters reduce noise
+- **Sync**: Add CI check to verify SQL files match for function definitions
+- **Configuration**: Document PostgreSQL settings in deployment runbook
+
+## Examples
+
+### Before (Silent Failure)
+
+```sql
+-- User thinks operation completed, but it silently failed
+SELECT process_item('user-uuid', 'Nonexistent Item');
+-- Returns: void (no error, no log)
+-- Result: User never gets expected result, nobody knows why
+```
+
+### After (Observable Failure)
+
+```sql
+SELECT process_item('user-uuid', 'Nonexistent Item');
+-- Returns: void
+-- PostgreSQL log: {"timestamp":"2026-01-11T10:30:00Z","level":"WARNING","source":"postgresql","function":"process_item","message":"Item not found: Nonexistent Item","context":{"user_id":"user-uuid","item_name":"Nonexistent Item"}}
+-- Bugsink: New issue created with full context
+```
+
+## References
+
+- [ADR-029: Error Tracking with Bugsink](ADR-029-error-tracking-with-bugsink.md)
+- [ADR-027: Application-Wide Structured Logging](ADR-027-application-wide-structured-logging.md)
+- [PostgreSQL RAISE Documentation](https://www.postgresql.org/docs/current/plpgsql-errors-and-messages.html)
+- [PostgreSQL Logging Configuration](https://www.postgresql.org/docs/current/runtime-config-logging.html)

docs/adr/ADR-031-granular-debug-logging-strategy.md

@@ -0,0 +1,262 @@
+# ADR-031: Granular Debug Logging Strategy
+
+**Date**: 2026-02-10
+
+**Status**: Accepted
+
+**Source**: Imported from flyer-crawler project (ADR-052)
+
+**Related**: [ADR-027](ADR-027-application-wide-structured-logging.md), [ADR-017](ADR-017-structured-logging-with-pino.md)
+
+## Context
+
+Global log levels (INFO vs DEBUG) are too coarse. Developers need to inspect detailed debug information for specific subsystems (e.g., `ai-service`, `db-pool`, `auth-service`) without being flooded by logs from the entire application.
+
+When debugging a specific feature:
+
+- Setting `LOG_LEVEL=debug` globally produces too much noise
+- Manually adding/removing debug statements is error-prone
+- No standard way to enable targeted debugging in production
+
+## Decision
+
+We will adopt a namespace-based debug filter pattern, similar to the `debug` npm package, but integrated into our Pino logger.
+
+1. **Logger Namespaces**: Every service/module logger must be initialized with a `module` property (e.g., `logger.child({ module: 'ai-service' })`).
+2. **Environment Filter**: We will support a `DEBUG_MODULES` environment variable that overrides the log level for matching modules.
+
+## Implementation
+
+### Core Implementation
+
+Implemented in `src/services/logger.server.ts`:
+
+```typescript
+import pino from 'pino';
+
+// Parse DEBUG_MODULES from environment
+const debugModules = (process.env.DEBUG_MODULES || '').split(',').map((s) => s.trim());
+
+// Base logger configuration
+export const logger = pino({
+  level: process.env.LOG_LEVEL || (process.env.NODE_ENV === 'production' ? 'info' : 'debug'),
+  // ... other configuration
+});
+
+/**
+ * Creates a scoped logger for a specific module.
+ * If DEBUG_MODULES includes this module or '*', debug level is enabled.
+ */
+export const createScopedLogger = (moduleName: string) => {
+  // If DEBUG_MODULES contains the module name or "*", force level to 'debug'
+  const isDebugEnabled = debugModules.includes('*') || debugModules.includes(moduleName);
+
+  return logger.child({
+    module: moduleName,
+    level: isDebugEnabled ? 'debug' : logger.level,
+  });
+};
+```
+
+### Service Usage Examples
+
+```typescript
+// src/services/aiService.server.ts
+import { createScopedLogger } from './logger.server';
+
+const logger = createScopedLogger('ai-service');
+
+export async function processWithAI(data: unknown) {
+  logger.debug({ data }, 'Starting AI processing');
+  // ... implementation
+  logger.info({ result }, 'AI processing completed');
+}
+```
+
+```typescript
+// src/services/authService.server.ts
+import { createScopedLogger } from './logger.server';
+
+const logger = createScopedLogger('auth-service');
+
+export async function validateToken(token: string) {
+  logger.debug({ tokenLength: token.length }, 'Validating token');
+  // ... implementation
+}
+```
+
+### Module Naming Convention
+
+Use kebab-case suffixed with `-service` or `-worker`:
+
+| Module Name     | Purpose                          | File                                  |
+| --------------- | -------------------------------- | ------------------------------------- |
+| `ai-service`    | AI/external API interactions     | `src/services/aiService.server.ts`    |
+| `auth-service`  | Authentication and authorization | `src/services/authService.server.ts`  |
+| `db-pool`       | Database connection pooling      | `src/services/database.server.ts`     |
+| `cache-service` | Redis/caching operations         | `src/services/cacheService.server.ts` |
+| `queue-worker`  | Background job processing        | `src/workers/queueWorker.ts`          |
+| `email-service` | Email sending                    | `src/services/emailService.server.ts` |
+
+## Usage
+
+### Enable Debug Logging for Specific Modules
+
+To debug only AI and authentication:
+
+```bash
+DEBUG_MODULES=ai-service,auth-service npm run dev
+```
+
+### Enable All Debug Logging
+
+Use wildcard to enable debug logging for all modules:
+
+```bash
+DEBUG_MODULES=* npm run dev
+```
+
+### Development Environment
+
+In `.env.development`:
+
+```bash
+# Enable debug logging for specific modules during development
+DEBUG_MODULES=ai-service
+```
+
+### Production Troubleshooting
+
+Temporarily enable debug logging for a specific subsystem:
+
+```bash
+# SSH into production server
+ssh root@example.com
+
+# Set environment variable and restart
+DEBUG_MODULES=ai-service pm2 restart app-api
+
+# View logs
+pm2 logs app-api --lines 100
+
+# Disable debug logging
+pm2 unset DEBUG_MODULES app-api
+pm2 restart app-api
+```
+
+### With PM2 Configuration
+
+In `ecosystem.config.js`:
+
+```javascript
+module.exports = {
+  apps: [
+    {
+      name: 'app-api',
+      script: 'dist/server.js',
+      env: {
+        NODE_ENV: 'production',
+        // DEBUG_MODULES is unset by default
+      },
+      env_debug: {
+        NODE_ENV: 'production',
+        DEBUG_MODULES: 'ai-service,auth-service',
+      },
+    },
+  ],
+};
+```
+
+Start with debug logging:
+
+```bash
+pm2 start ecosystem.config.js --env debug
+```
+
+## Best Practices
+
+### 1. Use Scoped Loggers for Long-Running Services
+
+Services with complex workflows or external API calls should use `createScopedLogger` to allow targeted debugging:
+
+```typescript
+const logger = createScopedLogger('payment-service');
+
+export async function processPayment(payment: Payment) {
+  logger.debug({ paymentId: payment.id }, 'Starting payment processing');
+
+  try {
+    const result = await externalPaymentAPI.process(payment);
+    logger.debug({ result }, 'External API response');
+    return result;
+  } catch (error) {
+    logger.error({ error, paymentId: payment.id }, 'Payment processing failed');
+    throw error;
+  }
+}
+```
+
+### 2. Use Child Loggers for Contextual Data
+
+Even within scoped loggers, create child loggers with job/request-specific context:
+
+```typescript
+const logger = createScopedLogger('queue-worker');
+
+async function processJob(job: Job) {
+  const jobLogger = logger.child({ jobId: job.id, jobName: job.name });
+
+  jobLogger.debug('Starting job processing');
+  // ... processing
+  jobLogger.info('Job completed successfully');
+}
+```
+
+### 3. Consistent Debug Message Patterns
+
+Use consistent patterns for debug messages:
+
+```typescript
+// Function entry
+logger.debug({ params: sanitizedParams }, 'Function entry: processOrder');
+
+// External API calls
+logger.debug({ url, method }, 'External API request');
+logger.debug({ statusCode, duration }, 'External API response');
+
+// State changes
+logger.debug({ before, after }, 'State transition');
+
+// Decision points
+logger.debug({ condition, result }, 'Branch decision');
+```
+
+### 4. Production Usage Guidelines
+
+- `DEBUG_MODULES` can be set in production for temporary debugging
+- Should not be used continuously due to increased log volume
+- Always unset after troubleshooting is complete
+- Monitor log storage when debug logging is enabled
+
+## Consequences
+
+### Positive
+
+- Developers can inspect detailed logs for specific subsystems without log flooding
+- Production debugging becomes more targeted and efficient
+- No performance impact when debug logging is disabled
+- Compatible with existing Pino logging infrastructure
+- Follows familiar pattern from `debug` npm package
+
+### Negative
+
+- Requires developers to know module names (mitigated by documentation)
+- Not all services have adopted scoped loggers yet (gradual migration)
+- Additional configuration complexity
+
+## References
+
+- [ADR-027: Application-Wide Structured Logging](ADR-027-application-wide-structured-logging.md)
+- [ADR-017: Structured Logging with Pino](ADR-017-structured-logging-with-pino.md)
+- [debug npm package](https://www.npmjs.com/package/debug) - Inspiration for namespace pattern
+- [Pino Child Loggers](https://getpino.io/#/docs/child-loggers)

docs/adr/ADR-032-application-performance-monitoring.md

@@ -0,0 +1,263 @@
+# ADR-032: Application Performance Monitoring (APM)
+
+**Date**: 2026-02-10
+
+**Status**: Proposed
+
+**Source**: Imported from flyer-crawler project (ADR-056)
+
+**Related**: [ADR-029](ADR-029-error-tracking-with-bugsink.md) (Error Tracking with Bugsink)
+
+## Context
+
+Application Performance Monitoring (APM) provides visibility into application behavior through:
+
+- **Distributed Tracing**: Track requests across services, queues, and database calls
+- **Performance Metrics**: Response times, throughput, error rates
+- **Resource Monitoring**: Memory usage, CPU, database connections
+- **Transaction Analysis**: Identify slow endpoints and bottlenecks
+
+While ADR-029 covers error tracking and observability, APM is a distinct concern focused on performance rather than errors. The Sentry SDK supports APM through its tracing features, but this capability is currently **intentionally disabled** in our application.
+
+### Current State
+
+The Sentry SDK is installed and configured for error tracking (see ADR-029), but APM features are disabled:
+
+```typescript
+// src/services/sentry.client.ts
+Sentry.init({
+  dsn: config.sentry.dsn,
+  environment: config.sentry.environment,
+  // Performance monitoring - disabled for now to keep it simple
+  tracesSampleRate: 0,
+  // ...
+});
+```
+
+```typescript
+// src/services/sentry.server.ts
+Sentry.init({
+  dsn: config.sentry.dsn,
+  environment: config.sentry.environment || config.server.nodeEnv,
+  // Performance monitoring - disabled for now to keep it simple
+  tracesSampleRate: 0,
+  // ...
+});
+```
+
+### Why APM is Currently Disabled
+
+1. **Complexity**: APM adds overhead and complexity to debugging
+2. **Bugsink Limitations**: Bugsink's APM support is less mature than its error tracking
+3. **Resource Overhead**: Tracing adds memory and CPU overhead
+4. **Focus**: Error tracking provides more immediate value for our current scale
+5. **Cost**: High sample rates can significantly increase storage requirements
+
+## Decision
+
+We propose a **staged approach** to APM implementation:
+
+### Phase 1: Selective Backend Tracing (Low Priority)
+
+Enable tracing for specific high-value operations:
+
+```typescript
+// Enable tracing for specific transactions only
+Sentry.init({
+  dsn: config.sentry.dsn,
+  tracesSampleRate: 0, // Keep default at 0
+
+  // Trace only specific high-value transactions
+  tracesSampler: (samplingContext) => {
+    const transactionName = samplingContext.transactionContext?.name;
+
+    // Always trace long-running jobs
+    if (transactionName?.includes('job-processing')) {
+      return 0.1; // 10% sample rate
+    }
+
+    // Always trace AI/external API calls
+    if (transactionName?.includes('external-api')) {
+      return 0.5; // 50% sample rate
+    }
+
+    // Trace slow endpoints (determined by custom logic)
+    if (samplingContext.parentSampled) {
+      return 0.1; // 10% for child transactions
+    }
+
+    return 0; // Don't trace other transactions
+  },
+});
+```
+
+### Phase 2: Custom Performance Metrics
+
+Add custom metrics without full tracing overhead:
+
+```typescript
+// Custom metric for slow database queries
+import { metrics } from '@sentry/node';
+
+// In repository methods
+const startTime = performance.now();
+const result = await pool.query(sql, params);
+const duration = performance.now() - startTime;
+
+metrics.distribution('db.query.duration', duration, {
+  tags: { query_type: 'select', table: 'users' },
+});
+
+if (duration > 1000) {
+  logger.warn({ duration, sql }, 'Slow query detected');
+}
+```
+
+### Phase 3: Full APM Integration (Future)
+
+When/if full APM is needed:
+
+```typescript
+Sentry.init({
+  dsn: config.sentry.dsn,
+  tracesSampleRate: 0.1, // 10% of transactions
+  profilesSampleRate: 0.1, // 10% of traced transactions get profiled
+
+  integrations: [
+    // Database tracing
+    Sentry.postgresIntegration(),
+    // Redis tracing
+    Sentry.redisIntegration(),
+    // BullMQ job tracing (custom integration)
+  ],
+});
+```
+
+## Implementation Steps
+
+### To Enable Basic APM
+
+1. **Update Sentry Configuration**:
+   - Set `tracesSampleRate` > 0 in `src/services/sentry.server.ts`
+   - Set `tracesSampleRate` > 0 in `src/services/sentry.client.ts`
+   - Add environment variable `SENTRY_TRACES_SAMPLE_RATE` (default: 0)
+
+2. **Add Instrumentation**:
+   - Enable automatic Express instrumentation
+   - Add manual spans for BullMQ job processing
+   - Add database query instrumentation
+
+3. **Frontend Tracing**:
+   - Add Browser Tracing integration
+   - Configure page load and navigation tracing
+
+4. **Environment Variables**:
+
+   ```bash
+   SENTRY_TRACES_SAMPLE_RATE=0.1  # 10% sampling
+   SENTRY_PROFILES_SAMPLE_RATE=0  # Profiling disabled
+   ```
+
+5. **Bugsink Configuration**:
+   - Verify Bugsink supports performance data ingestion
+   - Configure retention policies for performance data
+
+### Configuration Changes Required
+
+```typescript
+// src/config/env.ts - Add new config
+sentry: {
+  dsn: env.SENTRY_DSN,
+  environment: env.SENTRY_ENVIRONMENT,
+  debug: env.SENTRY_DEBUG === 'true',
+  tracesSampleRate: parseFloat(env.SENTRY_TRACES_SAMPLE_RATE || '0'),
+  profilesSampleRate: parseFloat(env.SENTRY_PROFILES_SAMPLE_RATE || '0'),
+},
+```
+
+```typescript
+// src/services/sentry.server.ts - Updated init
+Sentry.init({
+  dsn: config.sentry.dsn,
+  environment: config.sentry.environment,
+  tracesSampleRate: config.sentry.tracesSampleRate,
+  profilesSampleRate: config.sentry.profilesSampleRate,
+  // ... rest of config
+});
+```
+
+## Trade-offs
+
+### Enabling APM
+
+**Benefits**:
+
+- Identify performance bottlenecks
+- Track distributed transactions across services
+- Profile slow endpoints
+- Monitor resource utilization trends
+
+**Costs**:
+
+- Increased memory usage (~5-15% overhead)
+- Additional CPU for trace processing
+- Increased storage in Bugsink/Sentry
+- More complex debugging (noise in traces)
+- Potential latency from tracing overhead
+
+### Keeping APM Disabled
+
+**Benefits**:
+
+- Simpler operation and debugging
+- Lower resource overhead
+- Focused on error tracking (higher priority)
+- No additional storage costs
+
+**Costs**:
+
+- No automated performance insights
+- Manual profiling required for bottleneck detection
+- Limited visibility into slow transactions
+
+## Alternatives Considered
+
+1. **OpenTelemetry**: More vendor-neutral, but adds another dependency and complexity
+2. **Prometheus + Grafana**: Good for metrics, but doesn't provide distributed tracing
+3. **Jaeger/Zipkin**: Purpose-built for tracing, but requires additional infrastructure
+4. **New Relic/Datadog SaaS**: Full-featured but conflicts with self-hosted requirement
+
+## Current Recommendation
+
+**Keep APM disabled** (`tracesSampleRate: 0`) until:
+
+1. Specific performance issues are identified that require tracing
+2. Bugsink's APM support is verified and tested
+3. Infrastructure can support the additional overhead
+4. There is a clear business need for performance visibility
+
+When enabling APM becomes necessary, start with Phase 1 (selective tracing) to minimize overhead while gaining targeted insights.
+
+## Consequences
+
+### Positive (When Implemented)
+
+- Automated identification of slow endpoints
+- Distributed trace visualization across async operations
+- Correlation between errors and performance issues
+- Proactive alerting on performance degradation
+
+### Negative
+
+- Additional infrastructure complexity
+- Storage overhead for trace data
+- Potential performance impact from tracing itself
+- Learning curve for trace analysis
+
+## References
+
+- [Sentry Performance Monitoring](https://docs.sentry.io/product/performance/)
+- [@sentry/node Performance](https://docs.sentry.io/platforms/javascript/guides/node/performance/)
+- [@sentry/react Performance](https://docs.sentry.io/platforms/javascript/guides/react/performance/)
+- [OpenTelemetry](https://opentelemetry.io/) (alternative approach)
+- [ADR-029: Error Tracking with Bugsink](ADR-029-error-tracking-with-bugsink.md)

docs/adr/ADR-033-bugsink-gitea-issue-sync.md

@@ -0,0 +1,340 @@
+# ADR-033: Bugsink to Gitea Issue Synchronization
+
+**Date**: 2026-02-10
+
+**Status**: Proposed
+
+**Source**: Imported from flyer-crawler project (ADR-054)
+
+**Related**: [ADR-029](ADR-029-error-tracking-with-bugsink.md), [ADR-012](ADR-012-bullmq-background-job-processing.md)
+
+## Context
+
+The application uses Bugsink (Sentry-compatible self-hosted error tracking) to capture runtime errors across multiple projects:
+
+| Project Type   | Environment  | Description                              |
+| -------------- | ------------ | ---------------------------------------- |
+| Backend        | Production   | Main API server errors                   |
+| Backend        | Test/Staging | Pre-production API errors                |
+| Frontend       | Production   | Client-side JavaScript errors            |
+| Frontend       | Test/Staging | Pre-production frontend errors           |
+| Infrastructure | Production   | Infrastructure-level errors (Redis, PM2) |
+| Infrastructure | Test/Staging | Pre-production infrastructure errors     |
+
+Currently, errors remain in Bugsink until manually reviewed. There is no automated workflow to:
+
+1. Create trackable tickets for errors
+2. Assign errors to developers
+3. Track resolution progress
+4. Prevent errors from being forgotten
+
+## Decision
+
+Implement an automated background worker that synchronizes unresolved Bugsink issues to Gitea as trackable tickets. The sync worker will:
+
+1. **Run only on the test/staging server** (not production, not dev container)
+2. **Poll all Bugsink projects** for unresolved issues
+3. **Create Gitea issues** with full error context
+4. **Mark synced issues as resolved** in Bugsink (to prevent re-polling)
+5. **Track sync state in Redis** to ensure idempotency
+
+### Why Test/Staging Only?
+
+- The sync worker is a background service that needs API tokens for both Bugsink and Gitea
+- Running on test/staging provides a single sync point without duplicating infrastructure
+- All Bugsink projects (including production) are synced from this one worker
+- Production server stays focused on serving users, not running sync jobs
+
+## Architecture
+
+### Component Overview
+
+```
++-----------------------------------------------------------------------+
+|                     TEST/STAGING SERVER                                |
+|                                                                        |
+|  +------------------+    +------------------+    +-------------------+ |
+|  |  BullMQ Queue    |--->|  Sync Worker     |--->|  Redis DB 15      | |
+|  |  bugsink-sync    |    |  (15min repeat)  |    |  Sync State       | |
+|  +------------------+    +--------+---------+    +-------------------+ |
+|                                   |                                    |
++-----------------------------------+------------------------------------+
+                                    |
+                    +---------------+---------------+
+                    v                               v
+           +------------------+            +------------------+
+           |     Bugsink      |            |      Gitea       |
+           |  (all projects)  |            |    (1 repo)      |
+           +------------------+            +------------------+
+```
+
+### Queue Configuration
+
+| Setting         | Value                  | Rationale                                    |
+| --------------- | ---------------------- | -------------------------------------------- |
+| Queue Name      | `bugsink-sync`         | Follows existing naming pattern              |
+| Repeat Interval | 15 minutes             | Balances responsiveness with API rate limits |
+| Retry Attempts  | 3                      | Standard retry policy                        |
+| Backoff         | Exponential (30s base) | Handles temporary API failures               |
+| Concurrency     | 1                      | Serial processing prevents race conditions   |
+
+### Redis Database Allocation
+
+| Database | Usage               | Owner           |
+| -------- | ------------------- | --------------- |
+| 0        | BullMQ (Production) | Existing queues |
+| 1        | BullMQ (Test)       | Existing queues |
+| 2-14     | Reserved            | Future use      |
+| 15       | Bugsink Sync State  | This feature    |
+
+### Redis Key Schema
+
+```
+bugsink:synced:{bugsink_issue_id}
+  +-- Value: JSON {
+       gitea_issue_number: number,
+       synced_at: ISO timestamp,
+       project: string,
+       title: string
+     }
+```
+
+### Gitea Labels
+
+The following labels should be created in the repository:
+
+| Label                | Color              | Purpose                            |
+| -------------------- | ------------------ | ---------------------------------- |
+| `bug:frontend`       | #e11d48 (Red)      | Frontend JavaScript/React errors   |
+| `bug:backend`        | #ea580c (Orange)   | Backend Node.js/API errors         |
+| `bug:infrastructure` | #7c3aed (Purple)   | Infrastructure errors (Redis, PM2) |
+| `env:production`     | #dc2626 (Dark Red) | Production environment             |
+| `env:test`           | #2563eb (Blue)     | Test/staging environment           |
+| `env:development`    | #6b7280 (Gray)     | Development environment            |
+| `source:bugsink`     | #10b981 (Green)    | Auto-synced from Bugsink           |
+
+### Label Mapping
+
+| Bugsink Project Type  | Bug Label          | Env Label      |
+| --------------------- | ------------------ | -------------- |
+| backend (prod)        | bug:backend        | env:production |
+| backend (test)        | bug:backend        | env:test       |
+| frontend (prod)       | bug:frontend       | env:production |
+| frontend (test)       | bug:frontend       | env:test       |
+| infrastructure (prod) | bug:infrastructure | env:production |
+| infrastructure (test) | bug:infrastructure | env:test       |
+
+All synced issues also receive the `source:bugsink` label.
+
+## Implementation Details
+
+### New Files
+
+| File                                   | Purpose                                     |
+| -------------------------------------- | ------------------------------------------- |
+| `src/services/bugsinkSync.server.ts`   | Core synchronization logic                  |
+| `src/services/bugsinkClient.server.ts` | HTTP client for Bugsink API                 |
+| `src/services/giteaClient.server.ts`   | HTTP client for Gitea API                   |
+| `src/types/bugsink.ts`                 | TypeScript interfaces for Bugsink responses |
+| `src/routes/admin/bugsink-sync.ts`     | Admin endpoints for manual trigger          |
+
+### Modified Files
+
+| File                             | Changes                               |
+| -------------------------------- | ------------------------------------- |
+| `src/services/queues.server.ts`  | Add `bugsinkSyncQueue` definition     |
+| `src/services/workers.server.ts` | Add sync worker implementation        |
+| `src/config/env.ts`              | Add bugsink sync configuration schema |
+| `.env.example`                   | Document new environment variables    |
+
+### Environment Variables
+
+```bash
+# Bugsink Configuration
+BUGSINK_URL=https://bugsink.example.com
+BUGSINK_API_TOKEN=...  # Created via Django management command
+
+# Gitea Configuration
+GITEA_URL=https://gitea.example.com
+GITEA_API_TOKEN=...    # Personal access token with repo scope
+GITEA_OWNER=org-name
+GITEA_REPO=project-repo
+
+# Sync Control
+BUGSINK_SYNC_ENABLED=false    # Set true only in test environment
+BUGSINK_SYNC_INTERVAL=15      # Minutes between sync runs
+```
+
+### Gitea Issue Template
+
+```markdown
+## Error Details
+
+| Field        | Value           |
+| ------------ | --------------- |
+| **Type**     | {error_type}    |
+| **Message**  | {error_message} |
+| **Platform** | {platform}      |
+| **Level**    | {level}         |
+
+## Occurrence Statistics
+
+- **First Seen**: {first_seen}
+- **Last Seen**: {last_seen}
+- **Total Occurrences**: {count}
+
+## Request Context
+
+- **URL**: {request_url}
+- **Additional Context**: {context}
+
+## Stacktrace
+
+<details>
+<summary>Click to expand</summary>
+
+{stacktrace}
+
+</details>
+
+---
+
+**Bugsink Issue**: {bugsink_url}
+**Project**: {project_slug}
+**Trace ID**: {trace_id}
+```
+
+### Sync Workflow
+
+```
+1. Worker triggered (every 15 min or manual)
+2. For each Bugsink project:
+   a. List issues with status='unresolved'
+   b. For each issue:
+      i.   Check Redis for existing sync record
+      ii.  If already synced -> skip
+      iii. Fetch issue details + stacktrace
+      iv.  Create Gitea issue with labels
+      v.   Store sync record in Redis
+      vi.  Mark issue as 'resolved' in Bugsink
+3. Log summary (synced: N, skipped: N, failed: N)
+```
+
+### Idempotency Guarantees
+
+1. **Redis check before creation**: Prevents duplicate Gitea issues
+2. **Atomic Redis write after Gitea create**: Ensures state consistency
+3. **Query only unresolved issues**: Resolved issues won't appear in polls
+4. **No TTL on Redis keys**: Permanent sync history
+
+## Admin Interface
+
+### Manual Sync Endpoint
+
+```
+POST /api/admin/bugsink/sync
+Authorization: Bearer {admin_jwt}
+
+Response:
+{
+  "success": true,
+  "data": {
+    "synced": 3,
+    "skipped": 12,
+    "failed": 0,
+    "duration_ms": 2340
+  }
+}
+```
+
+### Sync Status Endpoint
+
+```
+GET /api/admin/bugsink/sync/status
+Authorization: Bearer {admin_jwt}
+
+Response:
+{
+  "success": true,
+  "data": {
+    "enabled": true,
+    "last_run": "2026-01-17T10:30:00Z",
+    "next_run": "2026-01-17T10:45:00Z",
+    "total_synced": 47,
+    "projects": [
+      { "slug": "backend-prod", "synced_count": 12 },
+      ...
+    ]
+  }
+}
+```
+
+## Implementation Phases
+
+### Phase 1: Core Infrastructure
+
+- Add environment variables to `env.ts` schema
+- Create `BugsinkClient` service (HTTP client)
+- Create `GiteaClient` service (HTTP client)
+- Add Redis db 15 connection for sync tracking
+
+### Phase 2: Sync Logic
+
+- Create `BugsinkSyncService` with sync logic
+- Add `bugsink-sync` queue to `queues.server.ts`
+- Add sync worker to `workers.server.ts`
+- Create TypeScript types for API responses
+
+### Phase 3: Integration
+
+- Add admin endpoints for manual sync trigger
+- Update CI/CD with new secrets
+- Add secrets to repository settings
+- Test end-to-end in staging environment
+
+### Phase 4: Documentation
+
+- Update CLAUDE.md with sync information
+- Create operational runbook for sync issues
+
+## Consequences
+
+### Positive
+
+1. **Visibility**: All application errors become trackable tickets
+2. **Accountability**: Errors can be assigned to developers
+3. **History**: Complete audit trail of when errors were discovered and resolved
+4. **Integration**: Errors appear alongside feature work in Gitea
+5. **Automation**: No manual error triage required
+
+### Negative
+
+1. **API Dependencies**: Requires both Bugsink and Gitea APIs to be available
+2. **Token Management**: Additional secrets to manage in CI/CD
+3. **Potential Noise**: High-frequency errors could create many tickets (mitigated by Bugsink's issue grouping)
+4. **Single Point**: Sync only runs on test server (if test server is down, no sync occurs)
+
+### Risks and Mitigations
+
+| Risk                    | Mitigation                                        |
+| ----------------------- | ------------------------------------------------- |
+| Bugsink API rate limits | 15-minute polling interval                        |
+| Gitea API rate limits   | Sequential processing with delays                 |
+| Redis connection issues | Reuse existing connection patterns                |
+| Duplicate issues        | Redis tracking + idempotent checks                |
+| Missing stacktrace      | Graceful degradation (create issue without trace) |
+
+## Future Enhancements
+
+1. **Bi-directional sync**: Update Bugsink when Gitea issue is closed
+2. **Smart deduplication**: Detect similar errors across projects
+3. **Priority mapping**: High occurrence count -> high priority label
+4. **Slack/Discord notifications**: Alert on new critical errors
+5. **Metrics dashboard**: Track error trends over time
+
+## References
+
+- [ADR-012: BullMQ Background Job Processing](ADR-012-bullmq-background-job-processing.md)
+- [ADR-029: Error Tracking with Bugsink](ADR-029-error-tracking-with-bugsink.md)
+- [Bugsink API Documentation](https://bugsink.com/docs/api/)
+- [Gitea API Documentation](https://docs.gitea.io/en-us/api-usage/)

docs/adr/index.md

@@ -23,7 +23,7 @@ This directory contains a log of the architectural decisions made for the Flyer
 
 **[ADR-003](./0003-standardized-input-validation-using-middleware.md)**: Standardized Input Validation using Middleware (Accepted)
 **[ADR-008](./0008-api-versioning-strategy.md)**: API Versioning Strategy (Accepted - Phase 2 Complete)
-**[ADR-018](./0018-api-documentation-strategy.md)**: API Documentation Strategy (Accepted)
+**[ADR-018](./0018-api-documentation-strategy.md)**: API Documentation Strategy (Superseded - tsoa migration complete)
 **[ADR-022](./0022-real-time-notification-system.md)**: Real-time Notification System (Accepted)
 **[ADR-028](./0028-api-response-standardization.md)**: API Response Standardization and Envelope Pattern (Implemented)
 
@@ -56,6 +56,7 @@ This directory contains a log of the architectural decisions made for the Flyer
 **[ADR-038](./0038-graceful-shutdown-pattern.md)**: Graceful Shutdown Pattern (Accepted)
 **[ADR-053](./0053-worker-health-checks.md)**: Worker Health Checks and Stalled Job Monitoring (Accepted)
 **[ADR-054](./0054-bugsink-gitea-issue-sync.md)**: Bugsink to Gitea Issue Synchronization (Proposed)
+**[ADR-061](./0061-pm2-process-isolation-safeguards.md)**: PM2 Process Isolation Safeguards (Accepted)
 
 ## 7. Frontend / User Interface
 
@@ -74,6 +75,8 @@ This directory contains a log of the architectural decisions made for the Flyer
 **[ADR-045](./0045-test-data-factories-and-fixtures.md)**: Test Data Factories and Fixtures (Accepted)
 **[ADR-047](./0047-project-file-and-folder-organization.md)**: Project File and Folder Organization (Proposed)
 **[ADR-057](./0057-test-remediation-post-api-versioning.md)**: Test Remediation Post-API Versioning (Accepted)
+**[ADR-059](./0059-dependency-modernization.md)**: Dependency Modernization - tsoa Migration (Accepted)
+**[ADR-060](./0060-typescript-test-error-remediation.md)**: TypeScript Test Error Remediation Strategy (Implemented)
 
 ## 9. Architecture Patterns
 

docs/archive/sessions/PM2_SAFEGUARDS_SESSION_2026-02-17.md

@@ -0,0 +1,377 @@
+# PM2 Process Isolation Safeguards Project
+
+**Session Date**: 2026-02-17
+**Status**: Completed
+**Triggered By**: Critical production incident during v0.15.0 deployment
+
+---
+
+## Executive Summary
+
+On 2026-02-17, a critical incident occurred during v0.15.0 production deployment where ALL PM2 processes on the production server were killed, not just the flyer-crawler processes. This caused unplanned downtime for multiple applications including `stock-alert.projectium.com`.
+
+Despite PM2 process isolation fixes already being in place (commit `b6a62a0`), the incident still occurred. Investigation suggests the Gitea runner may have executed a cached/older version of the workflow files. In response, we implemented a comprehensive defense-in-depth strategy with 5 layers of safeguards across all deployment workflows.
+
+---
+
+## Incident Background
+
+### What Happened
+
+| Aspect                | Detail                                                  |
+| --------------------- | ------------------------------------------------------- |
+| **Date/Time**         | 2026-02-17 ~07:40 UTC                                   |
+| **Trigger**           | v0.15.0 production deployment via `deploy-to-prod.yml`  |
+| **Impact**            | ALL PM2 processes killed (all environments)             |
+| **Collateral Damage** | `stock-alert.projectium.com` and other PM2-managed apps |
+| **Severity**          | P1 - Critical                                           |
+
+### Key Mystery
+
+The PM2 process isolation fix was already implemented in commit `b6a62a0` (2026-02-13) and was included in v0.15.0. The fix correctly used whitelist-based filtering:
+
+```javascript
+const prodProcesses = [
+  'flyer-crawler-api',
+  'flyer-crawler-worker',
+  'flyer-crawler-analytics-worker',
+];
+list.forEach((p) => {
+  if (
+    (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') &&
+    prodProcesses.includes(p.name)
+  ) {
+    exec('pm2 delete ' + p.pm2_env.pm_id);
+  }
+});
+```
+
+**Hypothesis**: Gitea runner executed a cached older version of the workflow file that did not contain the fix.
+
+---
+
+## Solution: Defense-in-Depth Safeguards
+
+Rather than relying solely on the filter logic (which may be correct but not executed), we implemented 5 layers of safeguards that provide visibility, validation, and automatic abort capabilities.
+
+### Safeguard Layers
+
+| Layer | Name                              | Purpose                                                 |
+| ----- | --------------------------------- | ------------------------------------------------------- |
+| 1     | **Workflow Metadata Logging**     | Audit trail of which workflow version actually executed |
+| 2     | **Pre-Cleanup PM2 State Logging** | Capture full process list before any modifications      |
+| 3     | **Process Count Validation**      | SAFETY ABORT if filter would delete ALL processes       |
+| 4     | **Explicit Name Verification**    | Log exactly which processes will be affected            |
+| 5     | **Post-Cleanup Verification**     | Verify environment isolation after cleanup              |
+
+### Layer Details
+
+#### Layer 1: Workflow Metadata Logging
+
+Logs at the start of deployment:
+
+- Workflow file name
+- SHA-256 hash of the workflow file
+- Git commit being deployed
+- Git branch
+- Timestamp (UTC)
+- Actor (who triggered the deployment)
+
+**Purpose**: If an incident occurs, we can verify whether the executed workflow matches the repository version.
+
+```bash
+echo "=== WORKFLOW METADATA ==="
+echo "Workflow file: deploy-to-prod.yml"
+echo "Workflow file hash: $(sha256sum .gitea/workflows/deploy-to-prod.yml | cut -d' ' -f1)"
+echo "Git commit: $(git rev-parse HEAD)"
+echo "Timestamp: $(date -u '+%Y-%m-%d %H:%M:%S UTC')"
+echo "Actor: ${{ gitea.actor }}"
+echo "=== END METADATA ==="
+```
+
+#### Layer 2: Pre-Cleanup PM2 State Logging
+
+Captures full PM2 process list in JSON format before any modifications.
+
+**Purpose**: Provides forensic evidence of what processes existed before cleanup began.
+
+```bash
+echo "=== PRE-CLEANUP PM2 STATE ==="
+pm2 jlist
+echo "=== END PRE-CLEANUP STATE ==="
+```
+
+#### Layer 3: Process Count Validation (SAFETY ABORT)
+
+The most critical safeguard. Aborts the entire deployment if the filter would delete ALL processes and there are more than 3 processes total.
+
+**Purpose**: Catches filter bugs or unexpected conditions that would result in catastrophic process deletion.
+
+```javascript
+// SAFEGUARD 1: Process count validation
+const totalProcesses = list.length;
+if (targetProcesses.length === totalProcesses && totalProcesses > 3) {
+  console.error('SAFETY ABORT: Filter would delete ALL processes!');
+  console.error(
+    'Total processes: ' + totalProcesses + ', Target processes: ' + targetProcesses.length,
+  );
+  console.error('This indicates a potential filter bug. Aborting cleanup.');
+  process.exit(1);
+}
+```
+
+**Threshold Rationale**: The threshold of 3 allows normal operation when only the 3 expected processes exist (API, Worker, Analytics Worker) while catching anomalies when the server hosts more applications.
+
+#### Layer 4: Explicit Name Verification
+
+Logs the exact name, status, and PM2 ID of each process that will be deleted.
+
+**Purpose**: Provides clear visibility into what the cleanup operation will actually do.
+
+```javascript
+console.log('Found ' + targetProcesses.length + ' PRODUCTION processes to clean:');
+targetProcesses.forEach((p) => {
+  console.log(
+    '  - ' + p.name + ' (status: ' + p.pm2_env.status + ', pm_id: ' + p.pm2_env.pm_id + ')',
+  );
+});
+```
+
+#### Layer 5: Post-Cleanup Verification
+
+After cleanup, logs the state of processes by environment to verify isolation was maintained.
+
+**Purpose**: Immediately identifies if the cleanup affected the wrong environment.
+
+```bash
+echo "=== POST-CLEANUP VERIFICATION ==="
+pm2 jlist | node -e "
+  const list = JSON.parse(require('fs').readFileSync(0, 'utf-8'));
+  const prodProcesses = list.filter(p => p.name && p.name.startsWith('flyer-crawler-') && !p.name.endsWith('-test'));
+  const testProcesses = list.filter(p => p.name && p.name.endsWith('-test'));
+  console.log('Production processes after cleanup: ' + prodProcesses.length);
+  console.log('Test processes (should be untouched): ' + testProcesses.length);
+"
+echo "=== END POST-CLEANUP VERIFICATION ==="
+```
+
+---
+
+## Implementation Details
+
+### Files Modified
+
+| File                                       | Changes                                       |
+| ------------------------------------------ | --------------------------------------------- |
+| `.gitea/workflows/deploy-to-prod.yml`      | Added all 5 safeguard layers                  |
+| `.gitea/workflows/deploy-to-test.yml`      | Added all 5 safeguard layers                  |
+| `.gitea/workflows/manual-deploy-major.yml` | Added all 5 safeguard layers                  |
+| `CLAUDE.md`                                | Added PM2 Process Isolation Incidents section |
+
+### Files Created
+
+| File                                                      | Purpose                                 |
+| --------------------------------------------------------- | --------------------------------------- |
+| `docs/operations/INCIDENT-2026-02-17-PM2-PROCESS-KILL.md` | Detailed incident report                |
+| `docs/operations/PM2-INCIDENT-RESPONSE.md`                | Comprehensive incident response runbook |
+| `tests/qa/test-pm2-safeguard-logic.js`                    | Validation tests for safeguard logic    |
+
+---
+
+## Testing and Validation
+
+### Test Artifact
+
+A standalone JavaScript test file was created to validate the safeguard logic:
+
+**File**: `tests/qa/test-pm2-safeguard-logic.js`
+
+**Test Categories**:
+
+1. **Normal Operations (should NOT abort)**
+   - 3 errored out of 15 processes
+   - 1 errored out of 10 processes
+   - 0 processes to clean
+   - Fresh server with 3 processes (threshold boundary)
+
+2. **Dangerous Operations (SHOULD abort)**
+   - All 10 processes targeted
+   - All 15 processes targeted
+   - All 4 processes targeted (just above threshold)
+
+3. **Workflow-Specific Filter Tests**
+   - Production filter only matches production processes
+   - Test filter only matches `-test` suffix processes
+   - Filters don't cross-contaminate environments
+
+### Test Results
+
+All 11 scenarios passed:
+
+| Scenario                   | Total | Target | Expected | Result |
+| -------------------------- | ----- | ------ | -------- | ------ |
+| Normal prod cleanup        | 15    | 3      | No abort | PASS   |
+| Normal test cleanup        | 15    | 3      | No abort | PASS   |
+| Single process             | 10    | 1      | No abort | PASS   |
+| No cleanup needed          | 10    | 0      | No abort | PASS   |
+| Fresh server (threshold)   | 3     | 3      | No abort | PASS   |
+| Minimal server             | 2     | 2      | No abort | PASS   |
+| Empty PM2                  | 0     | 0      | No abort | PASS   |
+| Filter bug - 10 processes  | 10    | 10     | ABORT    | PASS   |
+| Filter bug - 15 processes  | 15    | 15     | ABORT    | PASS   |
+| Filter bug - 4 processes   | 4     | 4      | ABORT    | PASS   |
+| Filter bug - 100 processes | 100   | 100    | ABORT    | PASS   |
+
+### YAML Validation
+
+All workflow files passed YAML syntax validation using `python -c "import yaml; yaml.safe_load(open(...))"`
+
+---
+
+## Documentation Updates
+
+### CLAUDE.md Updates
+
+Added new section at line 293: **PM2 Process Isolation Incidents**
+
+Contains:
+
+- Reference to the 2026-02-17 incident
+- Impact summary
+- Prevention measures list
+- Response instructions
+- Links to related documentation
+
+### docs/README.md
+
+Added incident report reference under **Operations > Incident Reports**.
+
+### Cross-References Verified
+
+| Document        | Reference                               | Status |
+| --------------- | --------------------------------------- | ------ |
+| CLAUDE.md       | PM2-INCIDENT-RESPONSE.md                | Valid  |
+| CLAUDE.md       | INCIDENT-2026-02-17-PM2-PROCESS-KILL.md | Valid  |
+| Incident Report | CLAUDE.md PM2 section                   | Valid  |
+| Incident Report | PM2-INCIDENT-RESPONSE.md                | Valid  |
+| docs/README.md  | INCIDENT-2026-02-17-PM2-PROCESS-KILL.md | Valid  |
+
+---
+
+## Lessons Learned
+
+### Technical Lessons
+
+1. **Filter logic alone is not sufficient** - Even correct filters can be bypassed if an older version of the script is executed.
+
+2. **Workflow caching is a real risk** - CI/CD runners may cache workflow files, leading to stale versions being executed.
+
+3. **Defense-in-depth is essential for destructive operations** - Multiple layers of validation catch failures that single-point checks miss.
+
+4. **Visibility enables diagnosis** - Pre/post state logging makes root cause analysis possible.
+
+5. **Automatic abort prevents cascading failures** - The process count validation could have prevented the incident entirely.
+
+### Process Lessons
+
+1. **Shared PM2 daemons are risky** - Multiple applications sharing a PM2 daemon create cross-application dependencies.
+
+2. **Documentation should include failure modes** - CLAUDE.md now explicitly documents what can go wrong and how to respond.
+
+3. **Runbooks save time during incidents** - The incident response runbook provides step-by-step guidance when time is critical.
+
+---
+
+## Future Considerations
+
+### Not Implemented (Potential Future Work)
+
+1. **PM2 Namespacing** - Use PM2's native namespace feature to completely isolate environments.
+
+2. **Separate PM2 Daemons** - Run one PM2 daemon per application to eliminate cross-application risk.
+
+3. **Deployment Locks** - Implement mutex-style locks to prevent concurrent deployments.
+
+4. **Workflow Version Verification** - Add a pre-flight check that compares workflow hash against expected value.
+
+5. **Automated Rollback** - Implement automatic process restoration if safeguards detect a problem.
+
+---
+
+## Related Documentation
+
+- **ADR-061**: [PM2 Process Isolation Safeguards](../../adr/0061-pm2-process-isolation-safeguards.md)
+- **Incident Report**: [INCIDENT-2026-02-17-PM2-PROCESS-KILL.md](../../operations/INCIDENT-2026-02-17-PM2-PROCESS-KILL.md)
+- **Response Runbook**: [PM2-INCIDENT-RESPONSE.md](../../operations/PM2-INCIDENT-RESPONSE.md)
+- **CLAUDE.md Section**: [PM2 Process Isolation Incidents](../../../CLAUDE.md#pm2-process-isolation-incidents)
+- **Test Artifact**: [test-pm2-safeguard-logic.js](../../../tests/qa/test-pm2-safeguard-logic.js)
+- **ADR-014**: [Containerization and Deployment Strategy](../../adr/0014-containerization-and-deployment-strategy.md)
+
+---
+
+## Appendix: Workflow Changes Summary
+
+### deploy-to-prod.yml
+
+```diff
++ - name: Log Workflow Metadata
++     run: |
++       echo "=== WORKFLOW METADATA ==="
++       echo "Workflow file: deploy-to-prod.yml"
++       echo "Workflow file hash: $(sha256sum .gitea/workflows/deploy-to-prod.yml | cut -d' ' -f1)"
++       ...
+
+  - name: Install Backend Dependencies and Restart Production Server
+      run: |
++       # === PRE-CLEANUP PM2 STATE LOGGING ===
++       echo "=== PRE-CLEANUP PM2 STATE ==="
++       pm2 jlist
++       echo "=== END PRE-CLEANUP STATE ==="
++
+        # --- Cleanup Errored Processes with Defense-in-Depth Safeguards ---
+        node -e "
+          ...
++         // SAFEGUARD 1: Process count validation
++         if (targetProcesses.length === totalProcesses && totalProcesses > 3) {
++           console.error('SAFETY ABORT: Filter would delete ALL processes!');
++           process.exit(1);
++         }
++
++         // SAFEGUARD 2: Explicit name verification
++         console.log('Found ' + targetProcesses.length + ' PRODUCTION processes to clean:');
++         targetProcesses.forEach(p => {
++           console.log('  - ' + p.name + ' (status: ' + p.pm2_env.status + ')');
++         });
+          ...
+        "
++
++       # === POST-CLEANUP VERIFICATION ===
++       echo "=== POST-CLEANUP VERIFICATION ==="
++       pm2 jlist | node -e "..."
++       echo "=== END POST-CLEANUP VERIFICATION ==="
+```
+
+Similar changes were applied to `deploy-to-test.yml` and `manual-deploy-major.yml`.
+
+---
+
+## Session Participants
+
+| Role         | Agent Type                | Responsibility                        |
+| ------------ | ------------------------- | ------------------------------------- |
+| Orchestrator | Main Claude               | Session coordination and delegation   |
+| Planner      | planner subagent          | Incident analysis and solution design |
+| Documenter   | describer-for-ai subagent | Incident report creation              |
+| Coder #1     | coder subagent            | Workflow safeguard implementation     |
+| Coder #2     | coder subagent            | Incident response runbook creation    |
+| Coder #3     | coder subagent            | CLAUDE.md updates                     |
+| Tester       | tester subagent           | Comprehensive validation              |
+| Archivist    | Lead Technical Archivist  | Final documentation                   |
+
+---
+
+## Revision History
+
+| Date       | Author                   | Change                  |
+| ---------- | ------------------------ | ----------------------- |
+| 2026-02-17 | Lead Technical Archivist | Initial session summary |

docs/archive/sessions/TESTING_SESSION_2026-01-21.md

@@ -486,9 +486,9 @@ Attach screenshots for:
 
 ## 🔐 Sign-Off
 
-**Tester Name**: ******\*\*\*\*******\_\_\_******\*\*\*\*******
+**Tester Name**: **\*\***\*\*\*\***\*\***\_\_\_**\*\***\*\*\*\***\*\***
 
-**Date/Time Completed**: ****\*\*\*\*****\_\_\_****\*\*\*\*****
+**Date/Time Completed**: \***\*\*\*\*\*\*\***\_\_\_\***\*\*\*\*\*\*\***
 
 **Total Testing Time**: **\_\_** minutes
 

docs/archive/sessions/TYPESCRIPT_ERROR_REMEDIATION_2026-02-17.md

@@ -0,0 +1,270 @@
+# TypeScript Test Error Remediation Project
+
+**Date**: 2026-02-17
+
+**Status**: Completed
+
+**ADR**: [ADR-060](../../adr/0060-typescript-test-error-remediation.md)
+
+## Executive Summary
+
+Systematic remediation of 185 TypeScript errors across the flyer-crawler test suite following API response standardization (ADR-028) and tsoa migration (ADR-059). The project achieved zero TypeScript errors while maintaining test suite integrity.
+
+## Project Metrics
+
+| Metric            | Initial | Final | Change |
+| ----------------- | ------- | ----- | ------ |
+| TypeScript Errors | 185     | 0     | -185   |
+| Tests Passing     | 4,600   | 4,603 | +3     |
+| Tests Failing     | 62      | 59    | -3     |
+| Files Modified    | 0       | 25+   | -      |
+
+## Error Evolution Timeline
+
+```
+Initial Assessment:     185 errors
+After Phase 1-4:        114 errors  (-71)
+After Iteration 2:       67 errors  (-47)
+After Iteration 3:       23 errors  (-44)
+Final:                    0 errors  (-23)
+```
+
+## Root Causes Identified
+
+### 1. SuccessResponse Discriminated Union (48.1%)
+
+ADR-028 introduced `ApiSuccessResponse<T> | ApiErrorResponse` union types. Tests accessing `response.body.data` without type guards triggered TS2339 errors.
+
+**Solution**: Created `asSuccessResponse<T>()` type guard utility.
+
+### 2. Mock Object Type Casting (22.7%)
+
+Vitest mocks return `MockedFunction<T>` types. Passing to functions expecting exact signatures required explicit casting.
+
+**Solution**: Created `asMock<T>()` utility and standardized mock patterns.
+
+### 3. Response Body Property Access (15.1%)
+
+Supertest `response.body` is typed as `unknown`. Direct property access violated strict mode.
+
+**Solution**: Consistent use of `asSuccessResponse()` before accessing `.data`.
+
+### 4. Partial Mock Missing Properties (9.7%)
+
+Factory functions creating partial mocks lacked required properties.
+
+**Solution**: Updated all mock factories to return complete type-safe objects.
+
+### 5. Generic Type Parameter Issues (2.7%)
+
+TypeScript could not infer generics in certain contexts.
+
+**Solution**: Explicit generic parameters on factory calls and assertions.
+
+### 6. Module Import Type Issues (1.6%)
+
+Type mismatches in module mock declarations.
+
+**Solution**: Proper use of `vi.mocked()` and `Mocked<typeof module>` patterns.
+
+## Implementation Strategy
+
+### Phase 1: Foundation (Infrastructure)
+
+Created shared test utilities that enable fixes across all test files:
+
+```typescript
+// src/tests/utils/testHelpers.ts
+export function asSuccessResponse<T>(body: unknown): ApiSuccessResponse<T>;
+export function asErrorResponse(body: unknown): ApiErrorResponse;
+export function asMock<T extends (...args: unknown[]) => unknown>(mock: Mock): T;
+export { createMockLogger, mockLogger } from './mockLogger';
+```
+
+### Phase 2-4: Parallel Execution
+
+Distributed work across multiple parallel tasks:
+
+| Group | Files                                      | Dependencies      |
+| ----- | ------------------------------------------ | ----------------- |
+| A     | Controller tests (auth, user, flyer)       | Phase 1 utilities |
+| B     | Controller tests (recipe, inventory, etc.) | Phase 1 utilities |
+| C     | Service tests                              | None              |
+| D     | Route tests                                | Phase 1 utilities |
+
+### Phase 5: Iterative Refinement
+
+Multiple verification and fix iterations:
+
+1. Run type-check
+2. Analyze remaining errors
+3. Fix errors by file
+4. Re-verify
+5. Repeat until zero errors
+
+## Files Modified
+
+### Controller Tests (19 files)
+
+- `src/controllers/admin.controller.test.ts`
+- `src/controllers/ai.controller.test.ts`
+- `src/controllers/auth.controller.test.ts`
+- `src/controllers/budget.controller.test.ts`
+- `src/controllers/category.controller.test.ts`
+- `src/controllers/deals.controller.test.ts`
+- `src/controllers/flyer.controller.test.ts`
+- `src/controllers/gamification.controller.test.ts`
+- `src/controllers/inventory.controller.test.ts`
+- `src/controllers/personalization.controller.test.ts`
+- `src/controllers/price.controller.test.ts`
+- `src/controllers/reactions.controller.test.ts`
+- `src/controllers/receipt.controller.test.ts`
+- `src/controllers/recipe.controller.test.ts`
+- `src/controllers/store.controller.test.ts`
+- `src/controllers/system.controller.test.ts`
+- `src/controllers/upc.controller.test.ts`
+- `src/controllers/user.controller.test.ts`
+
+### Shared Test Utilities
+
+- `src/tests/utils/testHelpers.ts` - Type guards and mock utilities
+- `src/tests/utils/mockLogger.ts` - Pino logger mock factory
+- `src/tests/utils/mockFactories.ts` - 60+ entity mock factories
+
+### Route Tests
+
+- `src/routes/admin.*.routes.test.ts` (5 files)
+- `src/routes/ai.routes.test.ts`
+
+### Service Tests
+
+- `src/services/receiptService.server.test.ts`
+- `src/services/queueService.server.test.ts`
+
+### Middleware Tests
+
+- `src/middleware/apiVersion.middleware.test.ts`
+
+## Key Patterns Established
+
+### 1. Response Type Narrowing
+
+```typescript
+// Standard pattern for success responses
+const response = await request.get('/api/v1/users/1');
+const body = asSuccessResponse<User>(response.body);
+expect(body.data.id).toBe(1);
+
+// Standard pattern for error responses
+expect(response.status).toBe(400);
+const body = asErrorResponse(response.body);
+expect(body.error.code).toBe('VALIDATION_ERROR');
+```
+
+### 2. Mock Logger Creation
+
+```typescript
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+function createMockRequest(overrides = {}): ExpressRequest {
+  return {
+    body: {},
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+```
+
+### 3. Mock Service Casting
+
+```typescript
+import type { Mocked } from 'vitest';
+
+vi.mock('../services/authService');
+import { authService } from '../services/authService';
+
+const mockedAuthService = authService as Mocked<typeof authService>;
+mockedAuthService.login.mockResolvedValue(mockResult);
+```
+
+### 4. Mock Factory Usage
+
+```typescript
+import { createMockUserProfile, createMockFlyer } from '../tests/utils/mockFactories';
+
+const mockUser = createMockUserProfile({ role: 'admin' });
+const mockFlyer = createMockFlyer({ store: { name: 'Test Store' } });
+```
+
+## Lessons Learned
+
+### 1. Infrastructure First
+
+Creating shared utilities before fixing individual files dramatically reduces total effort. The `asSuccessResponse()` utility alone enabled fixes for 89 errors.
+
+### 2. Parallel Execution Efficiency
+
+Organizing work into independent groups allowed parallel execution, reducing wall-clock time from estimated 10 hours to approximately 3.5 hours.
+
+### 3. Iterative Verification
+
+Running type-check after each batch of fixes catches cascading issues early and provides clear progress metrics.
+
+### 4. Complete Mock Factories
+
+Investing in comprehensive mock factories pays dividends across all tests. The 60+ factory functions in `mockFactories.ts` ensure type safety throughout the test suite.
+
+### 5. Consistent Patterns
+
+Establishing and documenting patterns (response narrowing, mock casting, logger creation) ensures consistency and reduces future maintenance burden.
+
+## Verification Results
+
+### Type Check
+
+```bash
+podman exec -it flyer-crawler-dev npm run type-check
+# Exit code: 0
+# Output: No errors
+```
+
+### Test Suite
+
+```bash
+podman exec -it flyer-crawler-dev npm test
+
+# Results:
+# Test Files: 167 passed, 11 failed (178 total)
+# Tests: 4,603 passed, 59 failed (4,662 total)
+# Duration: ~4 minutes
+```
+
+### Pre-existing Failures
+
+The 59 failing tests are pre-existing issues unrelated to this remediation:
+
+- Integration test timing issues
+- Mock isolation in globalSetup
+- Redis/Queue worker interference
+
+## Documentation Updates
+
+1. **ADR-060**: Status updated to "Implemented" with completion metrics
+2. **TESTING.md**: Added TypeScript type safety section
+3. **This document**: Session archive for future reference
+
+## Related ADRs
+
+- [ADR-010](../../adr/0010-testing-strategy-and-standards.md) - Testing Strategy
+- [ADR-028](../../adr/0028-api-response-standardization.md) - API Response Standardization
+- [ADR-045](../../adr/0045-test-data-factories-and-fixtures.md) - Test Data Factories
+- [ADR-057](../../adr/0057-test-remediation-post-api-versioning.md) - API Versioning Remediation
+- [ADR-059](../../adr/0059-dependency-modernization.md) - tsoa Migration
+- [ADR-060](../../adr/0060-typescript-test-error-remediation.md) - This Project
+
+## Future Recommendations
+
+1. **Enforce Type Safety in CI**: Add `npm run type-check` as a required CI step
+2. **Mock Factory Maintenance**: Update factories when entity types change
+3. **Pattern Documentation**: Reference TESTING.md patterns in code review guidelines
+4. **New Test Template**: Create a test file template that imports standard utilities

docs/development/CODE-PATTERNS.md

@@ -4,22 +4,24 @@ Common code patterns extracted from Architecture Decision Records (ADRs). Use th
 
 ## Quick Reference
 
-| Pattern            | Key Function/Class                                | Import From                           |
-| ------------------ | ------------------------------------------------- | ------------------------------------- |
-| Error Handling     | `handleDbError()`, `NotFoundError`                | `src/services/db/errors.db.ts`        |
-| Repository Methods | `get*`, `find*`, `list*`                          | `src/services/db/*.db.ts`             |
-| API Responses      | `sendSuccess()`, `sendPaginated()`, `sendError()` | `src/utils/apiResponse.ts`            |
-| Transactions       | `withTransaction()`                               | `src/services/db/connection.db.ts`    |
-| Validation         | `validateRequest()`                               | `src/middleware/validation.ts`        |
-| Authentication     | `authenticateJWT`                                 | `src/middleware/auth.ts`              |
-| Caching            | `cacheService`                                    | `src/services/cache.server.ts`        |
-| Background Jobs    | Queue classes                                     | `src/services/queues.server.ts`       |
-| Feature Flags      | `isFeatureEnabled()`, `useFeatureFlag()`          | `src/services/featureFlags.server.ts` |
+| Pattern              | Key Function/Class                                | Import From                           |
+| -------------------- | ------------------------------------------------- | ------------------------------------- |
+| **tsoa Controllers** | `BaseController`, `@Route`, `@Security`           | `src/controllers/base.controller.ts`  |
+| Error Handling       | `handleDbError()`, `NotFoundError`                | `src/services/db/errors.db.ts`        |
+| Repository Methods   | `get*`, `find*`, `list*`                          | `src/services/db/*.db.ts`             |
+| API Responses        | `sendSuccess()`, `sendPaginated()`, `sendError()` | `src/utils/apiResponse.ts`            |
+| Transactions         | `withTransaction()`                               | `src/services/db/connection.db.ts`    |
+| Validation           | `validateRequest()`                               | `src/middleware/validation.ts`        |
+| Authentication       | `authenticateJWT`, `@Security('bearerAuth')`      | `src/middleware/auth.ts`              |
+| Caching              | `cacheService`                                    | `src/services/cache.server.ts`        |
+| Background Jobs      | Queue classes                                     | `src/services/queues.server.ts`       |
+| Feature Flags        | `isFeatureEnabled()`, `useFeatureFlag()`          | `src/services/featureFlags.server.ts` |
 
 ---
 
 ## Table of Contents
 
+- [tsoa Controllers](#tsoa-controllers)
 - [Error Handling](#error-handling)
 - [Repository Patterns](#repository-patterns)
 - [API Response Patterns](#api-response-patterns)
@@ -32,6 +34,159 @@ Common code patterns extracted from Architecture Decision Records (ADRs). Use th
 
 ---
 
+## tsoa Controllers
+
+**ADR**: [ADR-018](../adr/0018-api-documentation-strategy.md), [ADR-059](../adr/0059-dependency-modernization.md)
+
+All API endpoints are implemented as tsoa controller classes that extend `BaseController`. This pattern provides type-safe OpenAPI documentation generation and standardized response formatting.
+
+### Basic Controller Structure
+
+```typescript
+import {
+  Route,
+  Tags,
+  Get,
+  Post,
+  Body,
+  Path,
+  Query,
+  Security,
+  SuccessResponse,
+  Response,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import {
+  BaseController,
+  SuccessResponse as SuccessResponseType,
+  ErrorResponse,
+} from './base.controller';
+
+interface CreateItemRequest {
+  name: string;
+  description?: string;
+}
+
+interface ItemResponse {
+  id: number;
+  name: string;
+  created_at: string;
+}
+
+@Route('items')
+@Tags('Items')
+export class ItemController extends BaseController {
+  /**
+   * Get an item by ID.
+   * @summary Get item
+   * @param id Item ID
+   */
+  @Get('{id}')
+  @SuccessResponse(200, 'Item retrieved')
+  @Response<ErrorResponse>(404, 'Item not found')
+  public async getItem(@Path() id: number): Promise<SuccessResponseType<ItemResponse>> {
+    const item = await itemService.getItemById(id);
+    return this.success(item);
+  }
+
+  /**
+   * Create a new item. Requires authentication.
+   * @summary Create item
+   */
+  @Post()
+  @Security('bearerAuth')
+  @SuccessResponse(201, 'Item created')
+  @Response<ErrorResponse>(401, 'Not authenticated')
+  public async createItem(
+    @Body() body: CreateItemRequest,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ItemResponse>> {
+    const user = request.user as UserProfile;
+    const item = await itemService.createItem(body, user.user.user_id);
+    return this.created(item);
+  }
+}
+```
+
+### BaseController Response Helpers
+
+```typescript
+// Success response (200)
+return this.success(data);
+
+// Created response (201)
+return this.created(data);
+
+// Paginated response
+const { page, limit } = this.normalizePagination(queryPage, queryLimit);
+return this.paginated(items, { page, limit, total });
+
+// Message-only response
+return this.message('Operation completed');
+
+// No content (204)
+return this.noContent();
+```
+
+### Authentication with @Security
+
+```typescript
+import { Security, Request } from 'tsoa';
+import { requireAdminRole } from '../middleware/tsoaAuthentication';
+
+// Require authentication
+@Get('profile')
+@Security('bearerAuth')
+public async getProfile(@Request() req: ExpressRequest): Promise<...> {
+  const user = req.user as UserProfile;
+  return this.success(user);
+}
+
+// Require admin role
+@Delete('users/{id}')
+@Security('bearerAuth')
+public async deleteUser(@Path() id: string, @Request() req: ExpressRequest): Promise<void> {
+  requireAdminRole(req.user as UserProfile);
+  await userService.deleteUser(id);
+  return this.noContent();
+}
+```
+
+### Error Handling in Controllers
+
+```typescript
+import { NotFoundError, ValidationError, ForbiddenError } from './base.controller';
+
+// Throw errors - they're handled by the global error handler
+throw new NotFoundError('Item', id); // 404
+throw new ValidationError([], 'Invalid'); // 400
+throw new ForbiddenError('Admin only'); // 403
+```
+
+### Rate Limiting
+
+```typescript
+import { Middlewares } from 'tsoa';
+import { loginLimiter } from '../config/rateLimiters';
+
+@Post('login')
+@Middlewares(loginLimiter)
+@Response<ErrorResponse>(429, 'Too many attempts')
+public async login(@Body() body: LoginRequest): Promise<...> { ... }
+```
+
+### Regenerating Routes
+
+After modifying controllers, regenerate the tsoa routes:
+
+```bash
+npm run tsoa:spec && npm run tsoa:routes
+```
+
+**Full Guide**: See [TSOA-MIGRATION-GUIDE.md](./TSOA-MIGRATION-GUIDE.md) for comprehensive documentation.
+
+---
+
 ## Error Handling
 
 **ADR**: [ADR-001](../adr/0001-standardized-error-handling.md)

docs/development/TESTING.md

@@ -505,3 +505,115 @@ expect(element.className).toMatch(/dark:bg-teal-\d+/);
 ```
 
 See [ADR-057](../adr/0057-test-remediation-post-api-versioning.md) for lessons learned from the test remediation effort.
+
+## TypeScript Type Safety in Tests (ADR-060)
+
+Tests must be fully type-safe. Common patterns for handling API response types and mock casting are documented below.
+
+### Response Type Narrowing
+
+API responses use discriminated unions (`ApiSuccessResponse<T> | ApiErrorResponse`). Access `.data` only after type narrowing.
+
+**Utility Functions** (`src/tests/utils/testHelpers.ts`):
+
+```typescript
+import { asSuccessResponse, asErrorResponse } from '@/tests/utils/testHelpers';
+
+// Success response access
+const response = await request.get('/api/v1/users/1');
+const body = asSuccessResponse<User>(response.body);
+expect(body.data.id).toBe(1);
+
+// Error response access
+const errorResponse = await request.post('/api/v1/users').send({});
+expect(errorResponse.status).toBe(400);
+const errorBody = asErrorResponse(errorResponse.body);
+expect(errorBody.error.code).toBe('VALIDATION_ERROR');
+```
+
+### Mock Object Type Casting
+
+Use appropriate casting based on type compatibility:
+
+```typescript
+// Level 1: Type assertion for compatible shapes
+const mock = createMockUser() as User;
+
+// Level 2: Unknown bridge for incompatible shapes
+const mock = partialMock as unknown as User;
+
+// Level 3: Partial with required overrides
+const mock: User = { ...createPartialUser(), id: 1, email: 'test@test.com' };
+```
+
+### Mock Function Casting
+
+```typescript
+import { asMock } from '@/tests/utils/testHelpers';
+
+// Cast vi.fn() to specific function type
+const mockFn = vi.fn();
+someService.register(asMock<UserService['create']>(mockFn));
+
+// vi.fn() with explicit type parameters
+const mockFn = vi.fn<[string], Promise<User>>().mockResolvedValue(mockUser);
+
+// vi.mocked() for mocked modules
+vi.mock('@/services/userService');
+const mockedService = vi.mocked(userService);
+mockedService.create.mockResolvedValue(mockUser);
+```
+
+### Mock Logger for Controller Tests
+
+Controllers require a Pino logger on `req.log`. Use the shared mock logger utility:
+
+```typescript
+import { createMockLogger } from '@/tests/utils/testHelpers';
+
+function createMockRequest(overrides = {}): ExpressRequest {
+  return {
+    body: {},
+    cookies: {},
+    log: createMockLogger(),
+    res: { cookie: vi.fn() } as unknown as ExpressResponse,
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+```
+
+The `createMockLogger()` function returns a complete Pino logger mock with all methods (`info`, `debug`, `error`, `warn`, `fatal`, `trace`, `silent`, `child`) as `vi.fn()` mocks.
+
+### MSW Handler Typing
+
+Ensure MSW handlers return properly typed API responses:
+
+```typescript
+import { ApiSuccessResponse } from '@/types/api';
+import { Flyer } from '@/types/flyer';
+
+http.get('/api/v1/flyers', () => {
+  const response: ApiSuccessResponse<Flyer[]> = {
+    success: true,
+    data: [mockFlyer],
+  };
+  return HttpResponse.json(response);
+});
+```
+
+### Generic Type Parameters
+
+Provide explicit generics when TypeScript cannot infer:
+
+```typescript
+// Factory function generic
+const mock = createMockPaginatedResponse<Flyer>({ data: [mockFlyer] });
+
+// Assertion generic
+expect(result).toEqual<ApiSuccessResponse<User>>({
+  success: true,
+  data: mockUser,
+});
+```
+
+See [ADR-060](../adr/0060-typescript-test-error-remediation.md) for comprehensive patterns and remediation strategies.

docs/development/TSOA-MIGRATION-GUIDE.md

@@ -0,0 +1,899 @@
+# tsoa Migration Guide
+
+This guide documents the migration from `swagger-jsdoc` to `tsoa` for API documentation and route generation in the Flyer Crawler project.
+
+## Table of Contents
+
+- [Overview](#overview)
+- [Architecture](#architecture)
+- [Creating a New Controller](#creating-a-new-controller)
+- [BaseController Pattern](#basecontroller-pattern)
+- [Authentication](#authentication)
+- [Request Handling](#request-handling)
+- [Response Formatting](#response-formatting)
+- [DTOs and Type Definitions](#dtos-and-type-definitions)
+- [File Uploads](#file-uploads)
+- [Rate Limiting](#rate-limiting)
+- [Error Handling](#error-handling)
+- [Testing Controllers](#testing-controllers)
+- [Build and Development](#build-and-development)
+- [Troubleshooting](#troubleshooting)
+- [Migration Lessons Learned](#migration-lessons-learned)
+
+## Overview
+
+### What Changed
+
+| Before (swagger-jsdoc)                   | After (tsoa)                                |
+| ---------------------------------------- | ------------------------------------------- |
+| JSDoc `@openapi` comments in route files | TypeScript decorators on controller classes |
+| Manual Express route registration        | tsoa generates routes automatically         |
+| Separate Zod validation middleware       | tsoa validates from TypeScript types        |
+| OpenAPI spec from comments               | OpenAPI spec from decorators and types      |
+
+### Why tsoa?
+
+1. **Type Safety**: OpenAPI spec is generated from TypeScript types, eliminating drift
+2. **Active Maintenance**: tsoa is actively maintained (vs. unmaintained swagger-jsdoc)
+3. **Reduced Duplication**: No more parallel JSDoc + TypeScript definitions
+4. **Route Generation**: tsoa generates Express routes, reducing boilerplate
+
+### Key Files
+
+| File                                   | Purpose                                 |
+| -------------------------------------- | --------------------------------------- |
+| `tsoa.json`                            | tsoa configuration                      |
+| `src/controllers/base.controller.ts`   | Base controller with response utilities |
+| `src/controllers/types.ts`             | Shared controller type definitions      |
+| `src/controllers/*.controller.ts`      | Domain controllers                      |
+| `src/dtos/common.dto.ts`               | Shared DTO definitions                  |
+| `src/middleware/tsoaAuthentication.ts` | JWT authentication handler              |
+| `src/routes/tsoa-generated.ts`         | Generated Express routes                |
+| `src/config/tsoa-spec.json`            | Generated OpenAPI 3.0 spec              |
+
+## Architecture
+
+### Request Flow
+
+```
+HTTP Request
+    |
+    v
+Express Middleware (logging, CORS, body parsing)
+    |
+    v
+tsoa-generated routes (src/routes/tsoa-generated.ts)
+    |
+    v
+tsoaAuthentication (if @Security decorator present)
+    |
+    v
+Controller Method
+    |
+    v
+Service Layer
+    |
+    v
+Repository Layer
+    |
+    v
+Database
+```
+
+### Controller Structure
+
+```
+src/controllers/
+  base.controller.ts      # Base class with response helpers
+  types.ts                 # Shared type definitions
+  health.controller.ts     # Health check endpoints
+  auth.controller.ts       # Authentication endpoints
+  user.controller.ts       # User management endpoints
+  ...
+```
+
+## Creating a New Controller
+
+### Step 1: Create the Controller File
+
+```typescript
+// src/controllers/example.controller.ts
+import {
+  Route,
+  Tags,
+  Get,
+  Post,
+  Put,
+  Delete,
+  Body,
+  Path,
+  Query,
+  Request,
+  Security,
+  SuccessResponse,
+  Response,
+  Middlewares,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import {
+  BaseController,
+  SuccessResponse as SuccessResponseType,
+  ErrorResponse,
+  PaginatedResponse,
+} from './base.controller';
+import type { UserProfile } from '../types';
+
+// ============================================================================
+// REQUEST/RESPONSE TYPES
+// ============================================================================
+
+interface CreateExampleRequest {
+  /**
+   * Name of the example item.
+   * @minLength 1
+   * @maxLength 255
+   * @example "My Example"
+   */
+  name: string;
+
+  /**
+   * Optional description.
+   * @example "This is an example item"
+   */
+  description?: string;
+}
+
+interface ExampleResponse {
+  id: number;
+  name: string;
+  description?: string;
+  created_at: string;
+}
+
+// ============================================================================
+// CONTROLLER
+// ============================================================================
+
+/**
+ * Example controller demonstrating tsoa patterns.
+ */
+@Route('examples')
+@Tags('Examples')
+export class ExampleController extends BaseController {
+  /**
+   * List all examples with pagination.
+   * @summary List examples
+   * @param page Page number (1-indexed)
+   * @param limit Items per page (max 100)
+   * @returns Paginated list of examples
+   */
+  @Get()
+  @SuccessResponse(200, 'Examples retrieved')
+  public async listExamples(
+    @Query() page?: number,
+    @Query() limit?: number,
+  ): Promise<PaginatedResponse<ExampleResponse>> {
+    const { page: p, limit: l } = this.normalizePagination(page, limit);
+
+    // Call service layer
+    const { items, total } = await exampleService.listExamples(p, l);
+
+    return this.paginated(items, { page: p, limit: l, total });
+  }
+
+  /**
+   * Get a single example by ID.
+   * @summary Get example
+   * @param id Example ID
+   * @returns The example
+   */
+  @Get('{id}')
+  @SuccessResponse(200, 'Example retrieved')
+  @Response<ErrorResponse>(404, 'Example not found')
+  public async getExample(@Path() id: number): Promise<SuccessResponseType<ExampleResponse>> {
+    const example = await exampleService.getExampleById(id);
+    return this.success(example);
+  }
+
+  /**
+   * Create a new example.
+   * Requires authentication.
+   * @summary Create example
+   * @param requestBody Example data
+   * @param request Express request
+   * @returns Created example
+   */
+  @Post()
+  @Security('bearerAuth')
+  @SuccessResponse(201, 'Example created')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Not authenticated')
+  public async createExample(
+    @Body() requestBody: CreateExampleRequest,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ExampleResponse>> {
+    const user = request.user as UserProfile;
+    const example = await exampleService.createExample(requestBody, user.user.user_id);
+    return this.created(example);
+  }
+
+  /**
+   * Delete an example.
+   * Requires authentication.
+   * @summary Delete example
+   * @param id Example ID
+   * @param request Express request
+   */
+  @Delete('{id}')
+  @Security('bearerAuth')
+  @SuccessResponse(204, 'Example deleted')
+  @Response<ErrorResponse>(401, 'Not authenticated')
+  @Response<ErrorResponse>(404, 'Example not found')
+  public async deleteExample(
+    @Path() id: number,
+    @Request() request: ExpressRequest,
+  ): Promise<void> {
+    const user = request.user as UserProfile;
+    await exampleService.deleteExample(id, user.user.user_id);
+    return this.noContent();
+  }
+}
+```
+
+### Step 2: Regenerate Routes
+
+After creating or modifying a controller:
+
+```bash
+# Generate OpenAPI spec and routes
+npm run tsoa:spec && npm run tsoa:routes
+
+# Or use the combined command
+npm run prebuild
+```
+
+### Step 3: Add Tests
+
+Create a test file at `src/controllers/__tests__/example.controller.test.ts`.
+
+## BaseController Pattern
+
+All controllers extend `BaseController` which provides:
+
+### Response Helpers
+
+```typescript
+// Success response (200)
+return this.success(data);
+
+// Created response (201)
+return this.created(data);
+
+// Paginated response (200 with pagination metadata)
+return this.paginated(items, { page, limit, total });
+
+// Message-only response
+return this.message('Operation completed successfully');
+
+// No content response (204)
+return this.noContent();
+
+// Error response (prefer throwing errors)
+this.setStatus(400);
+return this.error('BAD_REQUEST', 'Invalid input', details);
+```
+
+### Pagination Helpers
+
+```typescript
+// Normalize pagination with defaults and bounds
+const { page, limit } = this.normalizePagination(queryPage, queryLimit);
+// page defaults to 1, limit defaults to 20, max 100
+
+// Calculate pagination metadata
+const meta = this.calculatePagination({ page, limit, total });
+// Returns: { page, limit, total, totalPages, hasNextPage, hasPrevPage }
+```
+
+### Error Codes
+
+```typescript
+// Access standard error codes
+this.ErrorCode.VALIDATION_ERROR; // 'VALIDATION_ERROR'
+this.ErrorCode.NOT_FOUND; // 'NOT_FOUND'
+this.ErrorCode.UNAUTHORIZED; // 'UNAUTHORIZED'
+this.ErrorCode.FORBIDDEN; // 'FORBIDDEN'
+this.ErrorCode.CONFLICT; // 'CONFLICT'
+this.ErrorCode.BAD_REQUEST; // 'BAD_REQUEST'
+this.ErrorCode.INTERNAL_ERROR; // 'INTERNAL_ERROR'
+```
+
+## Authentication
+
+### Using @Security Decorator
+
+```typescript
+import { Security, Request } from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import type { UserProfile } from '../types';
+
+@Get('profile')
+@Security('bearerAuth')
+public async getProfile(
+  @Request() request: ExpressRequest,
+): Promise<SuccessResponseType<UserProfileDto>> {
+  // request.user is populated by tsoaAuthentication.ts
+  const user = request.user as UserProfile;
+  return this.success(toUserProfileDto(user));
+}
+```
+
+### Requiring Admin Role
+
+```typescript
+import { requireAdminRole } from '../middleware/tsoaAuthentication';
+
+@Delete('users/{id}')
+@Security('bearerAuth')
+public async deleteUser(
+  @Path() id: string,
+  @Request() request: ExpressRequest,
+): Promise<void> {
+  const user = request.user as UserProfile;
+  requireAdminRole(user); // Throws 403 if not admin
+
+  await userService.deleteUser(id);
+  return this.noContent();
+}
+```
+
+### How Authentication Works
+
+1. tsoa sees `@Security('bearerAuth')` decorator
+2. tsoa calls `expressAuthentication()` from `src/middleware/tsoaAuthentication.ts`
+3. The function extracts and validates the JWT token
+4. User profile is fetched from database and attached to `request.user`
+5. If authentication fails, an `AuthenticationError` is thrown
+
+## Request Handling
+
+### Path Parameters
+
+```typescript
+@Get('{id}')
+public async getItem(@Path() id: number): Promise<...> { ... }
+
+// Multiple path params
+@Get('{userId}/items/{itemId}')
+public async getUserItem(
+  @Path() userId: string,
+  @Path() itemId: number,
+): Promise<...> { ... }
+```
+
+### Query Parameters
+
+```typescript
+@Get()
+public async listItems(
+  @Query() page?: number,
+  @Query() limit?: number,
+  @Query() status?: 'active' | 'inactive',
+  @Query() search?: string,
+): Promise<...> { ... }
+```
+
+### Request Body
+
+```typescript
+interface CreateItemRequest {
+  name: string;
+  description?: string;
+}
+
+@Post()
+public async createItem(
+  @Body() requestBody: CreateItemRequest,
+): Promise<...> { ... }
+```
+
+### Headers
+
+```typescript
+@Get()
+public async getWithHeader(
+  @Header('X-Custom-Header') customHeader?: string,
+): Promise<...> { ... }
+```
+
+### Accessing Express Request/Response
+
+```typescript
+import type { Request as ExpressRequest } from 'express';
+
+@Post()
+public async handleRequest(
+  @Request() request: ExpressRequest,
+): Promise<...> {
+  const reqLog = request.log;          // Pino logger
+  const cookies = request.cookies;      // Cookies
+  const ip = request.ip;                // Client IP
+  const res = request.res!;             // Express response
+
+  // Set cookie
+  res.cookie('name', 'value', { httpOnly: true });
+
+  // ...
+}
+```
+
+## Response Formatting
+
+### Standard Success Response
+
+```typescript
+// Returns: { "success": true, "data": {...} }
+return this.success({ id: 1, name: 'Item' });
+```
+
+### Created Response (201)
+
+```typescript
+// Sets status 201 and returns success response
+return this.created(newItem);
+```
+
+### Paginated Response
+
+```typescript
+// Returns: { "success": true, "data": [...], "meta": { "pagination": {...} } }
+return this.paginated(items, { page: 1, limit: 20, total: 100 });
+```
+
+### No Content (204)
+
+```typescript
+// Sets status 204 with no body
+return this.noContent();
+```
+
+### Error Response
+
+Prefer throwing errors rather than returning error responses:
+
+```typescript
+import { NotFoundError, ValidationError, ForbiddenError } from './base.controller';
+
+// Throw for not found
+throw new NotFoundError('Item', id);
+
+// Throw for validation errors
+throw new ValidationError([], 'Invalid input');
+
+// Throw for forbidden
+throw new ForbiddenError('Admin access required');
+```
+
+If you need manual error response:
+
+```typescript
+this.setStatus(400);
+return this.error(this.ErrorCode.BAD_REQUEST, 'Invalid operation', { reason: '...' });
+```
+
+## DTOs and Type Definitions
+
+### Why DTOs?
+
+tsoa generates OpenAPI specs from TypeScript types. Some types cannot be serialized:
+
+- Tuples: `[number, number]` (e.g., GeoJSON coordinates)
+- Complex generics
+- Circular references
+
+DTOs flatten these into tsoa-compatible structures.
+
+### Shared DTOs
+
+Define shared DTOs in `src/dtos/common.dto.ts`:
+
+```typescript
+// src/dtos/common.dto.ts
+
+/**
+ * Address with flattened coordinates.
+ * GeoJSONPoint uses coordinates: [number, number] which tsoa cannot handle.
+ */
+export interface AddressDto {
+  address_id: number;
+  address_line_1: string;
+  city: string;
+  province_state: string;
+  postal_code: string;
+  country: string;
+  // Flattened from GeoJSONPoint.coordinates
+  latitude?: number | null;
+  longitude?: number | null;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface UserDto {
+  user_id: string;
+  email: string;
+  created_at: string;
+  updated_at: string;
+}
+```
+
+### Conversion Functions
+
+Create conversion functions to map domain types to DTOs:
+
+```typescript
+// In controller file
+function toAddressDto(address: Address): AddressDto {
+  return {
+    address_id: address.address_id,
+    address_line_1: address.address_line_1,
+    city: address.city,
+    province_state: address.province_state,
+    postal_code: address.postal_code,
+    country: address.country,
+    latitude: address.location?.coordinates[1] ?? null,
+    longitude: address.location?.coordinates[0] ?? null,
+    created_at: address.created_at,
+    updated_at: address.updated_at,
+  };
+}
+```
+
+### Important: Avoid Duplicate Type Names
+
+tsoa requires unique type names across all controllers. If two controllers define an interface with the same name, tsoa will fail.
+
+**Solution**: Define shared types in `src/dtos/common.dto.ts` and import them.
+
+## File Uploads
+
+tsoa supports file uploads via `@UploadedFile` and `@FormField` decorators:
+
+```typescript
+import { Post, Route, UploadedFile, FormField, Security } from 'tsoa';
+import multer from 'multer';
+
+// Configure multer
+const upload = multer({
+  storage: multer.diskStorage({
+    destination: '/tmp/uploads',
+    filename: (req, file, cb) => {
+      cb(null, `${Date.now()}-${Math.round(Math.random() * 1e9)}-${file.originalname}`);
+    },
+  }),
+  limits: { fileSize: 10 * 1024 * 1024 }, // 10MB
+});
+
+@Route('flyers')
+@Tags('Flyers')
+export class FlyerController extends BaseController {
+  /**
+   * Upload a flyer image.
+   * @summary Upload flyer
+   * @param file The flyer image file
+   * @param storeId Associated store ID
+   * @param request Express request
+   */
+  @Post('upload')
+  @Security('bearerAuth')
+  @Middlewares(upload.single('file'))
+  @SuccessResponse(201, 'Flyer uploaded')
+  public async uploadFlyer(
+    @UploadedFile() file: Express.Multer.File,
+    @FormField() storeId?: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<FlyerDto>> {
+    const user = request.user as UserProfile;
+    const flyer = await flyerService.processUpload(file, storeId, user.user.user_id);
+    return this.created(flyer);
+  }
+}
+```
+
+## Rate Limiting
+
+Apply rate limiters using the `@Middlewares` decorator:
+
+```typescript
+import { Middlewares } from 'tsoa';
+import { loginLimiter, registerLimiter } from '../config/rateLimiters';
+
+@Post('login')
+@Middlewares(loginLimiter)
+@SuccessResponse(200, 'Login successful')
+@Response<ErrorResponse>(429, 'Too many login attempts')
+public async login(@Body() body: LoginRequest): Promise<...> { ... }
+
+@Post('register')
+@Middlewares(registerLimiter)
+@SuccessResponse(201, 'User registered')
+@Response<ErrorResponse>(429, 'Too many registration attempts')
+public async register(@Body() body: RegisterRequest): Promise<...> { ... }
+```
+
+## Error Handling
+
+### Throwing Errors
+
+Use the error classes from `base.controller.ts`:
+
+```typescript
+import {
+  NotFoundError,
+  ValidationError,
+  ForbiddenError,
+  UniqueConstraintError,
+} from './base.controller';
+
+// Not found (404)
+throw new NotFoundError('User', userId);
+
+// Validation error (400)
+throw new ValidationError([], 'Invalid email format');
+
+// Forbidden (403)
+throw new ForbiddenError('Admin access required');
+
+// Conflict (409) - e.g., duplicate email
+throw new UniqueConstraintError('email', 'Email already registered');
+```
+
+### Global Error Handler
+
+Errors are caught by the global error handler in `server.ts` which formats them according to ADR-028:
+
+```json
+{
+  "success": false,
+  "error": {
+    "code": "NOT_FOUND",
+    "message": "User not found"
+  }
+}
+```
+
+### Authentication Errors
+
+The `tsoaAuthentication.ts` module throws `AuthenticationError` with appropriate HTTP status codes:
+
+- 401: Missing token, invalid token, expired token
+- 403: User lacks required role
+- 500: Server configuration error
+
+## Testing Controllers
+
+### Test File Location
+
+```
+src/controllers/__tests__/
+  example.controller.test.ts
+  auth.controller.test.ts
+  user.controller.test.ts
+  ...
+```
+
+### Test Structure
+
+```typescript
+// src/controllers/__tests__/example.controller.test.ts
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { ExampleController } from '../example.controller';
+
+// Mock dependencies
+vi.mock('../../services/exampleService', () => ({
+  exampleService: {
+    listExamples: vi.fn(),
+    getExampleById: vi.fn(),
+    createExample: vi.fn(),
+    deleteExample: vi.fn(),
+  },
+}));
+
+import { exampleService } from '../../services/exampleService';
+
+describe('ExampleController', () => {
+  let controller: ExampleController;
+
+  beforeEach(() => {
+    controller = new ExampleController();
+    vi.clearAllMocks();
+  });
+
+  describe('listExamples', () => {
+    it('should return paginated examples', async () => {
+      const mockItems = [{ id: 1, name: 'Test' }];
+      vi.mocked(exampleService.listExamples).mockResolvedValue({
+        items: mockItems,
+        total: 1,
+      });
+
+      const result = await controller.listExamples(1, 20);
+
+      expect(result.success).toBe(true);
+      expect(result.data).toEqual(mockItems);
+      expect(result.meta?.pagination).toBeDefined();
+      expect(result.meta?.pagination?.total).toBe(1);
+    });
+  });
+
+  describe('createExample', () => {
+    it('should create example and return 201', async () => {
+      const mockExample = { id: 1, name: 'New', created_at: '2026-01-01' };
+      vi.mocked(exampleService.createExample).mockResolvedValue(mockExample);
+
+      const mockRequest = {
+        user: { user: { user_id: 'user-123' } },
+      } as any;
+
+      const result = await controller.createExample({ name: 'New' }, mockRequest);
+
+      expect(result.success).toBe(true);
+      expect(result.data).toEqual(mockExample);
+      // Note: setStatus is called internally, verify with spy if needed
+    });
+  });
+});
+```
+
+### Testing Authentication
+
+```typescript
+describe('authenticated endpoints', () => {
+  it('should use user from request', async () => {
+    const mockRequest = {
+      user: {
+        user: { user_id: 'user-123', email: 'test@example.com' },
+        role: 'user',
+      },
+    } as any;
+
+    const result = await controller.getProfile(mockRequest);
+
+    expect(result.data.user.user_id).toBe('user-123');
+  });
+});
+```
+
+### Known Test Limitations
+
+Some test files have type errors with mock objects that are acceptable:
+
+```typescript
+// Type error: 'any' is not assignable to 'Express.Request'
+// This is acceptable in tests - the mock has the properties we need
+const mockRequest = { user: mockUser } as any;
+```
+
+These type errors do not affect test correctness. The 4603 unit tests and 345 integration tests all pass.
+
+## Build and Development
+
+### Development Workflow
+
+1. Create or modify controller
+2. Run `npm run tsoa:spec && npm run tsoa:routes`
+3. Run `npm run type-check` to verify
+4. Run tests
+
+### NPM Scripts
+
+```json
+{
+  "tsoa:spec": "tsoa spec",
+  "tsoa:routes": "tsoa routes",
+  "prebuild": "npm run tsoa:spec && npm run tsoa:routes",
+  "build": "tsc"
+}
+```
+
+### Watching for Changes
+
+Currently, tsoa routes must be regenerated manually when controllers change. Consider adding a watch script:
+
+```bash
+# In development, regenerate on save
+npm run tsoa:spec && npm run tsoa:routes
+```
+
+### Generated Files
+
+| File                           | Regenerate When                 |
+| ------------------------------ | ------------------------------- |
+| `src/routes/tsoa-generated.ts` | Controller changes              |
+| `src/config/tsoa-spec.json`    | Controller changes, DTO changes |
+
+These files are committed to the repository for faster builds.
+
+## Troubleshooting
+
+### "Duplicate identifier" Error
+
+**Problem**: tsoa fails with "Duplicate identifier" for a type.
+
+**Solution**: Move the type to `src/dtos/common.dto.ts` and import it in all controllers.
+
+### "Unable to resolve type" Error
+
+**Problem**: tsoa cannot serialize a complex type (tuples, generics).
+
+**Solution**: Create a DTO with flattened/simplified structure.
+
+```typescript
+// Before: GeoJSONPoint with coordinates: [number, number]
+// After: AddressDto with latitude, longitude as separate fields
+```
+
+### Route Not Found (404)
+
+**Problem**: New endpoint returns 404.
+
+**Solution**:
+
+1. Ensure controller file matches glob pattern: `src/controllers/**/*.controller.ts`
+2. Regenerate routes: `npm run tsoa:routes`
+3. Verify the route is in `src/routes/tsoa-generated.ts`
+
+### Authentication Not Working
+
+**Problem**: `request.user` is undefined.
+
+**Solution**:
+
+1. Ensure `@Security('bearerAuth')` decorator is on the method
+2. Verify `tsoaAuthentication.ts` is correctly configured in `tsoa.json`
+3. Check the Authorization header format: `Bearer <token>`
+
+### Type Mismatch in Tests
+
+**Problem**: TypeScript errors when mocking Express.Request.
+
+**Solution**: Use `as any` cast for mock objects in tests. This is acceptable and does not affect test correctness.
+
+```typescript
+const mockRequest = {
+  user: mockUserProfile,
+  log: mockLogger,
+} as any;
+```
+
+## Migration Lessons Learned
+
+### What Worked Well
+
+1. **BaseController Pattern**: Provides consistent response formatting and familiar helpers
+2. **Incremental Migration**: Controllers can be migrated one at a time
+3. **Type-First Design**: Defining request/response types first makes implementation clearer
+4. **Shared DTOs**: Centralizing DTOs in `common.dto.ts` prevents duplicate type errors
+
+### Challenges Encountered
+
+1. **Tuple Types**: tsoa cannot serialize TypeScript tuples. Solution: Flatten to separate fields.
+2. **Passport Integration**: OAuth callbacks use redirect-based flows that don't fit tsoa's JSON model. Solution: Keep OAuth callbacks in Express routes.
+3. **Test Type Errors**: Mock objects don't perfectly match Express types. Solution: Accept `as any` casts in tests.
+4. **Build Pipeline**: Must regenerate routes when controllers change. Solution: Add to prebuild script.
+
+### Recommendations for Future Controllers
+
+1. Start with the DTO/request/response types
+2. Use `@SuccessResponse` and `@Response` decorators for all status codes
+3. Add JSDoc comments for OpenAPI descriptions
+4. Keep controller methods thin - delegate to service layer
+5. Test controllers in isolation by mocking services
+
+## Related Documentation
+
+- [ADR-018: API Documentation Strategy](../adr/0018-api-documentation-strategy.md)
+- [ADR-059: Dependency Modernization](../adr/0059-dependency-modernization.md)
+- [ADR-028: API Response Standardization](../adr/0028-api-response-standardization.md)
+- [CODE-PATTERNS.md](./CODE-PATTERNS.md)
+- [TESTING.md](./TESTING.md)
+- [tsoa Documentation](https://tsoa-community.github.io/docs/)

docs/getting-started/ENVIRONMENT.md

@@ -123,6 +123,8 @@ node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
 
 **Get API Key**: [Google AI Studio](https://aistudio.google.com/app/apikey)
 
+**Test Environment Note**: The test/staging environment **deliberately omits** `GEMINI_API_KEY` to preserve free API quota. This is intentional - the API has strict daily limits on the free tier, and we want to reserve tokens for production use. AI features will be non-functional in test, but all other features can be tested normally. Deploy warnings about missing `GEMINI_API_KEY` in test logs are expected and safe to ignore.
+
 ### Google Services
 
 | Variable               | Required | Description                      |

docs/operations/INCIDENT-2026-02-17-PM2-PROCESS-KILL.md

@@ -0,0 +1,269 @@
+# Incident Report: PM2 Process Kill During v0.15.0 Deployment
+
+**Date**: 2026-02-17
+**Severity**: Critical
+**Status**: Mitigated - Safeguards Implemented
+**Affected Systems**: All PM2-managed applications on projectium.com server
+
+---
+
+## Resolution Summary
+
+**Safeguards implemented on 2026-02-17** to prevent recurrence:
+
+1. Workflow metadata logging (audit trail)
+2. Pre-cleanup PM2 state logging (forensics)
+3. Process count validation with SAFETY ABORT (automatic prevention)
+4. Explicit name verification (visibility)
+5. Post-cleanup verification (environment isolation check)
+
+**Documentation created**:
+
+- [PM2 Incident Response Runbook](PM2-INCIDENT-RESPONSE.md)
+- [PM2 Safeguards Session Summary](../archive/sessions/PM2_SAFEGUARDS_SESSION_2026-02-17.md)
+- CLAUDE.md updated with [PM2 Process Isolation Incidents section](../../CLAUDE.md#pm2-process-isolation-incidents)
+
+---
+
+## Summary
+
+During v0.15.0 production deployment, ALL PM2 processes on the server were terminated, not just flyer-crawler processes. This caused unplanned downtime for other applications including stock-alert.
+
+## Timeline
+
+| Time (Approx)         | Event                                                            |
+| --------------------- | ---------------------------------------------------------------- |
+| 2026-02-17 ~07:40 UTC | v0.15.0 production deployment triggered via `deploy-to-prod.yml` |
+| Unknown               | All PM2 processes killed (flyer-crawler AND other apps)          |
+| Unknown               | Incident discovered - stock-alert down                           |
+| 2026-02-17            | Investigation initiated                                          |
+| 2026-02-17            | Defense-in-depth safeguards implemented in all workflows         |
+| 2026-02-17            | Incident response runbook created                                |
+| 2026-02-17            | Status changed to Mitigated                                      |
+
+## Impact
+
+- **Affected Applications**: All PM2-managed processes on projectium.com
+  - flyer-crawler-api, flyer-crawler-worker, flyer-crawler-analytics-worker (expected)
+  - stock-alert (NOT expected - collateral damage)
+  - Potentially other unidentified applications
+- **Downtime Duration**: TBD
+- **User Impact**: Service unavailability for all affected applications
+
+---
+
+## Investigation Findings
+
+### Deployment Workflow Analysis
+
+All deployment workflows were reviewed for PM2 process isolation:
+
+| Workflow                  | PM2 Isolation  | Implementation                                                                                    |
+| ------------------------- | -------------- | ------------------------------------------------------------------------------------------------- |
+| `deploy-to-prod.yml`      | Whitelist      | `prodProcesses = ['flyer-crawler-api', 'flyer-crawler-worker', 'flyer-crawler-analytics-worker']` |
+| `deploy-to-test.yml`      | Pattern        | `p.name.endsWith('-test')`                                                                        |
+| `manual-deploy-major.yml` | Whitelist      | Same as deploy-to-prod                                                                            |
+| `manual-db-restore.yml`   | Explicit names | `pm2 stop flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker`                  |
+
+### Fix Commit Already In Place
+
+The PM2 process isolation fix was implemented in commit `b6a62a0` (2026-02-13):
+
+```
+commit b6a62a036f39ac895271402a61e5cc4227369de7
+Author: Torben Sorensen <torben.sorensen@gmail.com>
+Date:   Fri Feb 13 10:19:28 2026 -0800
+
+    be specific about pm2 processes
+
+Files modified:
+ .gitea/workflows/deploy-to-prod.yml
+ .gitea/workflows/deploy-to-test.yml
+ .gitea/workflows/manual-db-restore.yml
+ .gitea/workflows/manual-deploy-major.yml
+ CLAUDE.md
+```
+
+### v0.15.0 Release Contains Fix
+
+Confirmed: v0.15.0 (commit `93ad624`, 2026-02-18) includes the fix commit:
+
+```
+93ad624 ci: Bump version to 0.15.0 for production release [skip ci]
+...
+b6a62a0 be specific about pm2 processes  <-- Fix commit included
+```
+
+### Current Workflow PM2 Commands
+
+**Production Deploy (`deploy-to-prod.yml` line 170)**:
+
+```javascript
+const prodProcesses = [
+  'flyer-crawler-api',
+  'flyer-crawler-worker',
+  'flyer-crawler-analytics-worker',
+];
+list.forEach((p) => {
+  if (
+    (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') &&
+    prodProcesses.includes(p.name)
+  ) {
+    exec('pm2 delete ' + p.pm2_env.pm_id);
+  }
+});
+```
+
+**Test Deploy (`deploy-to-test.yml` line 100)**:
+
+```javascript
+list.forEach((p) => {
+  if (p.name && p.name.endsWith('-test')) {
+    exec('pm2 delete ' + p.pm2_env.pm_id);
+  }
+});
+```
+
+Both implementations have proper name filtering and should NOT affect non-flyer-crawler processes.
+
+---
+
+## Discrepancy Analysis
+
+### Key Mystery
+
+**If the fixes are in place, why did ALL processes get killed?**
+
+### Possible Explanations
+
+#### 1. Workflow Version Mismatch (HIGH PROBABILITY)
+
+**Hypothesis**: Gitea runner cached an older version of the workflow file.
+
+- Gitea Actions may cache workflow definitions
+- The runner might have executed an older version without the fix
+- Need to verify: What version of `deploy-to-prod.yml` actually executed?
+
+**Investigation Required**:
+
+- Check Gitea workflow execution logs for actual script content
+- Verify runner workflow caching behavior
+- Compare executed workflow vs repository version
+
+#### 2. Concurrent Workflow Execution (MEDIUM PROBABILITY)
+
+**Hypothesis**: Another workflow ran simultaneously with destructive PM2 commands.
+
+Workflows with potential issues:
+
+- `manual-db-reset-prod.yml` - Does NOT restart PM2 (schema reset only)
+- `manual-redis-flush-prod.yml` - Does NOT touch PM2
+- Test deployment concurrent with prod deployment
+
+**Investigation Required**:
+
+- Check Gitea Actions history for concurrent workflow runs
+- Review timestamps of all workflow executions on 2026-02-17
+
+#### 3. Manual SSH Command (MEDIUM PROBABILITY)
+
+**Hypothesis**: Someone SSH'd to the server and ran `pm2 stop all` or `pm2 delete all` manually.
+
+**Investigation Required**:
+
+- Check server shell history (if available)
+- Review any maintenance windows or manual interventions
+- Ask team members about manual actions
+
+#### 4. PM2 Internal Issue (LOW PROBABILITY)
+
+**Hypothesis**: PM2 daemon crash or corruption caused all processes to stop.
+
+**Investigation Required**:
+
+- Check PM2 daemon logs on server
+- Look for OOM killer events in system logs
+- Check disk space issues during deployment
+
+#### 5. Script Execution Error (LOW PROBABILITY)
+
+**Hypothesis**: JavaScript parsing error caused the filtering logic to be bypassed.
+
+**Investigation Required**:
+
+- Review workflow execution logs for JavaScript errors
+- Test the inline Node.js scripts locally
+- Check for shell escaping issues
+
+---
+
+## Documentation/Code Gaps Identified
+
+### CLAUDE.md Documentation
+
+The PM2 isolation rules are documented in `CLAUDE.md`, but:
+
+- Documentation uses `pm2 restart all` in the Quick Reference table (for dev container - acceptable)
+- Multiple docs still reference `pm2 restart all` without environment context
+- No incident response runbook for PM2 issues
+
+### Workflow Gaps
+
+1. **No Workflow Audit Trail**: No logging of which exact workflow version executed
+2. **No Pre-deployment Verification**: Workflows don't log PM2 state before modifications
+3. **No Cross-Application Impact Assessment**: No mechanism to detect/warn about other apps
+
+---
+
+## Next Steps for Root Cause Analysis
+
+### Immediate (Priority 1)
+
+1. [ ] Retrieve Gitea Actions execution logs for v0.15.0 deployment
+2. [ ] Extract actual executed workflow content from logs
+3. [ ] Check for concurrent workflow executions on 2026-02-17
+4. [ ] Review server PM2 daemon logs around incident time
+
+### Short-term (Priority 2)
+
+5. [ ] Implement pre-deployment PM2 state logging in workflows
+6. [ ] Add workflow version hash logging for audit trail
+7. [ ] Create incident response runbook for PM2/deployment issues
+
+### Long-term (Priority 3)
+
+8. [ ] Evaluate PM2 namespacing for complete process isolation
+9. [ ] Consider separate PM2 daemon per application
+10. [ ] Implement deployment monitoring/alerting
+
+---
+
+## Related Documentation
+
+- [CLAUDE.md - PM2 Process Isolation](../../../CLAUDE.md) (Critical Rules section)
+- [ADR-014: Containerization and Deployment Strategy](../adr/0014-containerization-and-deployment-strategy.md)
+- [Deployment Guide](./DEPLOYMENT.md)
+- Workflow files in `.gitea/workflows/`
+
+---
+
+## Appendix: Commit Timeline
+
+```
+93ad624 ci: Bump version to 0.15.0 for production release [skip ci]  <-- v0.15.0 release
+7dd4f21 ci: Bump version to 0.14.4 [skip ci]
+174b637 even more typescript fixes
+4f80baf ci: Bump version to 0.14.3 [skip ci]
+8450b5e Generate TSOA Spec and Routes
+e4d830a ci: Bump version to 0.14.2 [skip ci]
+b6a62a0 be specific about pm2 processes                               <-- PM2 fix commit
+2d2cd52 Massive Dependency Modernization Project
+```
+
+---
+
+## Revision History
+
+| Date       | Author             | Change                  |
+| ---------- | ------------------ | ----------------------- |
+| 2026-02-17 | Investigation Team | Initial incident report |

docs/operations/PM2-INCIDENT-RESPONSE.md

@@ -0,0 +1,818 @@
+# PM2 Incident Response Runbook
+
+**Purpose**: Step-by-step procedures for responding to PM2 process isolation incidents on the projectium.com server.
+
+**Audience**: On-call responders, system administrators, developers with server access.
+
+**Last updated**: 2026-02-17
+
+**Related documentation**:
+
+- [CLAUDE.md - PM2 Process Isolation Rules](../../CLAUDE.md)
+- [Incident Report: 2026-02-17](INCIDENT-2026-02-17-PM2-PROCESS-KILL.md)
+- [Monitoring Guide](MONITORING.md)
+- [Deployment Guide](DEPLOYMENT.md)
+
+---
+
+## Table of Contents
+
+1. [Quick Reference](#quick-reference)
+2. [Detection](#detection)
+3. [Initial Assessment](#initial-assessment)
+4. [Immediate Response](#immediate-response)
+5. [Process Restoration](#process-restoration)
+6. [Root Cause Investigation](#root-cause-investigation)
+7. [Communication Templates](#communication-templates)
+8. [Prevention Measures](#prevention-measures)
+9. [Contact Information](#contact-information)
+10. [Post-Incident Review](#post-incident-review)
+
+---
+
+## Quick Reference
+
+### PM2 Process Inventory
+
+| Application   | Environment | Process Names                                                                                | Config File                 | Directory                                    |
+| ------------- | ----------- | -------------------------------------------------------------------------------------------- | --------------------------- | -------------------------------------------- |
+| Flyer Crawler | Production  | `flyer-crawler-api`, `flyer-crawler-worker`, `flyer-crawler-analytics-worker`                | `ecosystem.config.cjs`      | `/var/www/flyer-crawler.projectium.com`      |
+| Flyer Crawler | Test        | `flyer-crawler-api-test`, `flyer-crawler-worker-test`, `flyer-crawler-analytics-worker-test` | `ecosystem-test.config.cjs` | `/var/www/flyer-crawler-test.projectium.com` |
+| Stock Alert   | Production  | `stock-alert-*`                                                                              | (varies)                    | `/var/www/stock-alert.projectium.com`        |
+
+### Critical Commands
+
+```bash
+# Check PM2 status
+pm2 list
+
+# Check specific process
+pm2 show flyer-crawler-api
+
+# View recent logs
+pm2 logs --lines 50
+
+# Restart specific processes (SAFE)
+pm2 restart flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker
+
+# DO NOT USE (affects ALL apps)
+# pm2 restart all    <-- DANGEROUS
+# pm2 stop all       <-- DANGEROUS
+# pm2 delete all     <-- DANGEROUS
+```
+
+### Severity Classification
+
+| Severity          | Criteria                                      | Response Time       | Example                                         |
+| ----------------- | --------------------------------------------- | ------------------- | ----------------------------------------------- |
+| **P1 - Critical** | Multiple applications down, production impact | Immediate (< 5 min) | All PM2 processes killed                        |
+| **P2 - High**     | Single application down, production impact    | < 15 min            | Flyer Crawler prod down, Stock Alert unaffected |
+| **P3 - Medium**   | Test environment only, no production impact   | < 1 hour            | Test processes killed, production unaffected    |
+
+---
+
+## Detection
+
+### How to Identify a PM2 Incident
+
+**Automated Indicators**:
+
+- Health check failures on `/api/health/ready`
+- Monitoring alerts (UptimeRobot, etc.)
+- Bugsink showing connection errors
+- NGINX returning 502 Bad Gateway
+
+**User-Reported Symptoms**:
+
+- "The site is down"
+- "I can't log in"
+- "Pages are loading slowly then timing out"
+- "I see a 502 error"
+
+**Manual Discovery**:
+
+```bash
+# SSH to server
+ssh gitea-runner@projectium.com
+
+# Check if PM2 is running
+pm2 list
+
+# Expected output shows processes
+# If empty or all errored = incident
+```
+
+### Incident Signature: Process Isolation Violation
+
+When a PM2 incident is caused by process isolation failure, you will see:
+
+```text
+# Expected state (normal):
++-----------------------------------+----+-----+---------+-------+
+| App name                          | id |mode | status  | cpu   |
++-----------------------------------+----+-----+---------+-------+
+| flyer-crawler-api                 | 0  |clust| online  | 0%    |
+| flyer-crawler-worker              | 1  |fork | online  | 0%    |
+| flyer-crawler-analytics-worker    | 2  |fork | online  | 0%    |
+| flyer-crawler-api-test            | 3  |fork | online  | 0%    |
+| flyer-crawler-worker-test         | 4  |fork | online  | 0%    |
+| flyer-crawler-analytics-worker-test| 5 |fork | online  | 0%    |
+| stock-alert-api                   | 6  |fork | online  | 0%    |
++-----------------------------------+----+-----+---------+-------+
+
+# Incident state (isolation violation):
+# All processes missing or errored - not just one app
++-----------------------------------+----+-----+---------+-------+
+| App name                          | id |mode | status  | cpu   |
++-----------------------------------+----+-----+---------+-------+
+# (empty or all processes errored/stopped)
++-----------------------------------+----+-----+---------+-------+
+```
+
+---
+
+## Initial Assessment
+
+### Step 1: Gather Information (2 minutes)
+
+Run these commands and capture output:
+
+```bash
+# 1. Check PM2 status
+pm2 list
+
+# 2. Check PM2 daemon status
+pm2 ping
+
+# 3. Check recent PM2 logs
+pm2 logs --lines 20 --nostream
+
+# 4. Check system status
+systemctl status pm2-gitea-runner --no-pager
+
+# 5. Check disk space
+df -h /
+
+# 6. Check memory
+free -h
+
+# 7. Check recent deployments (in app directory)
+cd /var/www/flyer-crawler.projectium.com
+git log --oneline -5
+```
+
+### Step 2: Determine Scope
+
+| Question                 | Command                                                          | Impact Level                    |
+| ------------------------ | ---------------------------------------------------------------- | ------------------------------- |
+| How many apps affected?  | `pm2 list`                                                       | Count missing/errored processes |
+| Is production down?      | `curl https://flyer-crawler.projectium.com/api/health/ping`      | Yes/No                          |
+| Is test down?            | `curl https://flyer-crawler-test.projectium.com/api/health/ping` | Yes/No                          |
+| Are other apps affected? | `pm2 list \| grep stock-alert`                                   | Yes/No                          |
+
+### Step 3: Classify Severity
+
+```text
+Decision Tree:
+
+Production app(s) down?
+    |
+    +-- YES: Multiple apps affected?
+    |       |
+    |       +-- YES --> P1 CRITICAL (all apps down)
+    |       |
+    |       +-- NO --> P2 HIGH (single app down)
+    |
+    +-- NO: Test environment only?
+            |
+            +-- YES --> P3 MEDIUM
+            |
+            +-- NO --> Investigate further
+```
+
+### Step 4: Document Initial State
+
+Capture this information before making any changes:
+
+```bash
+# Save PM2 state to file
+pm2 jlist > /tmp/pm2-incident-$(date +%Y%m%d-%H%M%S).json
+
+# Save system state
+{
+  echo "=== PM2 List ==="
+  pm2 list
+  echo ""
+  echo "=== Disk Space ==="
+  df -h
+  echo ""
+  echo "=== Memory ==="
+  free -h
+  echo ""
+  echo "=== Recent Git Commits ==="
+  cd /var/www/flyer-crawler.projectium.com && git log --oneline -5
+} > /tmp/incident-state-$(date +%Y%m%d-%H%M%S).txt
+```
+
+---
+
+## Immediate Response
+
+### Priority 1: Stop Ongoing Deployments
+
+If a deployment is currently running:
+
+1. Check Gitea Actions for running workflows
+2. Cancel any in-progress deployment workflows
+3. Do NOT start new deployments until incident resolved
+
+### Priority 2: Assess Which Processes Are Down
+
+```bash
+# Get list of processes and their status
+pm2 list
+
+# Check which processes exist but are errored/stopped
+pm2 jlist | jq '.[] | {name, status: .pm2_env.status}'
+```
+
+### Priority 3: Establish Order of Restoration
+
+Restore in this order (production first, critical path first):
+
+| Priority | Process                               | Rationale                            |
+| -------- | ------------------------------------- | ------------------------------------ |
+| 1        | `flyer-crawler-api`                   | Production API - highest user impact |
+| 2        | `flyer-crawler-worker`                | Production background jobs           |
+| 3        | `flyer-crawler-analytics-worker`      | Production analytics                 |
+| 4        | `stock-alert-*`                       | Other production apps                |
+| 5        | `flyer-crawler-api-test`              | Test environment                     |
+| 6        | `flyer-crawler-worker-test`           | Test background jobs                 |
+| 7        | `flyer-crawler-analytics-worker-test` | Test analytics                       |
+
+---
+
+## Process Restoration
+
+### Scenario A: Flyer Crawler Production Processes Missing
+
+```bash
+# Navigate to production directory
+cd /var/www/flyer-crawler.projectium.com
+
+# Start production processes
+pm2 start ecosystem.config.cjs
+
+# Verify processes started
+pm2 list
+
+# Check health endpoint
+curl -s http://localhost:3001/api/health/ready | jq .
+```
+
+### Scenario B: Flyer Crawler Test Processes Missing
+
+```bash
+# Navigate to test directory
+cd /var/www/flyer-crawler-test.projectium.com
+
+# Start test processes
+pm2 start ecosystem-test.config.cjs
+
+# Verify processes started
+pm2 list
+
+# Check health endpoint
+curl -s http://localhost:3002/api/health/ready | jq .
+```
+
+### Scenario C: Stock Alert Processes Missing
+
+```bash
+# Navigate to stock-alert directory
+cd /var/www/stock-alert.projectium.com
+
+# Start processes (adjust config file name as needed)
+pm2 start ecosystem.config.cjs
+
+# Verify processes started
+pm2 list
+```
+
+### Scenario D: All Processes Missing
+
+Execute restoration in priority order:
+
+```bash
+# 1. Flyer Crawler Production (highest priority)
+cd /var/www/flyer-crawler.projectium.com
+pm2 start ecosystem.config.cjs
+
+# Verify production is healthy before continuing
+curl -s http://localhost:3001/api/health/ready | jq '.data.status'
+# Should return "healthy"
+
+# 2. Stock Alert Production
+cd /var/www/stock-alert.projectium.com
+pm2 start ecosystem.config.cjs
+
+# 3. Flyer Crawler Test (lower priority)
+cd /var/www/flyer-crawler-test.projectium.com
+pm2 start ecosystem-test.config.cjs
+
+# 4. Save PM2 process list
+pm2 save
+
+# 5. Final verification
+pm2 list
+```
+
+### Health Check Verification
+
+After restoration, verify each application:
+
+**Flyer Crawler Production**:
+
+```bash
+# API health
+curl -s https://flyer-crawler.projectium.com/api/health/ready | jq '.data.status'
+# Expected: "healthy"
+
+# Check all services
+curl -s https://flyer-crawler.projectium.com/api/health/ready | jq '.data.services'
+```
+
+**Flyer Crawler Test**:
+
+```bash
+curl -s https://flyer-crawler-test.projectium.com/api/health/ready | jq '.data.status'
+```
+
+**Stock Alert**:
+
+```bash
+# Adjust URL as appropriate for stock-alert
+curl -s https://stock-alert.projectium.com/api/health/ready | jq '.data.status'
+```
+
+### Verification Checklist
+
+After restoration, confirm:
+
+- [ ] `pm2 list` shows all expected processes as `online`
+- [ ] Production health check returns `healthy`
+- [ ] Test health check returns `healthy` (if applicable)
+- [ ] No processes showing high restart count
+- [ ] No processes showing `errored` or `stopped` status
+- [ ] PM2 process list saved: `pm2 save`
+
+---
+
+## Root Cause Investigation
+
+### Step 1: Check Workflow Execution Logs
+
+```bash
+# Find recent Gitea Actions runs
+# (Access via Gitea web UI: Repository > Actions > Recent Runs)
+
+# Look for these workflows:
+# - deploy-to-prod.yml
+# - deploy-to-test.yml
+# - manual-deploy-major.yml
+# - manual-db-restore.yml
+```
+
+### Step 2: Check PM2 Daemon Logs
+
+```bash
+# PM2 daemon logs
+cat ~/.pm2/pm2.log | tail -100
+
+# PM2 process-specific logs
+ls -la ~/.pm2/logs/
+
+# Recent API logs
+tail -100 ~/.pm2/logs/flyer-crawler-api-out.log
+tail -100 ~/.pm2/logs/flyer-crawler-api-error.log
+```
+
+### Step 3: Check System Logs
+
+```bash
+# System journal for PM2 service
+journalctl -u pm2-gitea-runner -n 100 --no-pager
+
+# Kernel messages (OOM killer, etc.)
+journalctl -k -n 50 --no-pager | grep -i "killed\|oom\|memory"
+
+# Authentication logs (unauthorized access)
+tail -50 /var/log/auth.log
+```
+
+### Step 4: Git History Analysis
+
+```bash
+# Recent commits to deployment workflows
+cd /var/www/flyer-crawler.projectium.com
+git log --oneline -20 -- .gitea/workflows/
+
+# Check what changed in PM2 configs
+git log --oneline -10 -- ecosystem.config.cjs ecosystem-test.config.cjs
+
+# Diff against last known good state
+git diff <last-good-commit> -- .gitea/workflows/ ecosystem*.cjs
+```
+
+### Step 5: Timing Correlation
+
+Create a timeline:
+
+```text
+| Time (UTC) | Event | Source |
+|------------|-------|--------|
+| XX:XX | Last successful health check | Monitoring |
+| XX:XX | Deployment workflow started | Gitea Actions |
+| XX:XX | First failed health check | Monitoring |
+| XX:XX | Incident detected | User report / Alert |
+| XX:XX | Investigation started | On-call |
+```
+
+### Common Root Causes
+
+| Root Cause                   | Evidence                               | Prevention                   |
+| ---------------------------- | -------------------------------------- | ---------------------------- |
+| `pm2 stop all` in workflow   | Workflow logs show "all" command       | Use explicit process names   |
+| `pm2 delete all` in workflow | Empty PM2 list after deploy            | Use whitelist-based deletion |
+| OOM killer                   | `journalctl -k` shows "Killed process" | Increase memory limits       |
+| Disk space exhaustion        | `df -h` shows 100%                     | Log rotation, cleanup        |
+| Manual intervention          | Shell history shows pm2 commands       | Document all manual actions  |
+| Concurrent deployments       | Multiple workflows at same time        | Implement deployment locks   |
+| Workflow caching issue       | Old workflow version executed          | Force workflow refresh       |
+
+---
+
+## Communication Templates
+
+### Incident Notification (Internal)
+
+```text
+Subject: [P1 INCIDENT] PM2 Process Isolation Failure - Multiple Apps Down
+
+Status: INVESTIGATING
+Time Detected: YYYY-MM-DD HH:MM UTC
+Affected Systems: [flyer-crawler-prod, stock-alert-prod, ...]
+
+Summary:
+All PM2 processes on projectium.com server were terminated unexpectedly.
+Multiple production applications are currently down.
+
+Impact:
+- flyer-crawler.projectium.com: DOWN
+- stock-alert.projectium.com: DOWN
+- [other affected apps]
+
+Current Actions:
+- Restoring critical production processes
+- Investigating root cause
+
+Next Update: In 15 minutes or upon status change
+
+Incident Commander: [Name]
+```
+
+### Status Update Template
+
+```text
+Subject: [P1 INCIDENT] PM2 Process Isolation Failure - UPDATE #N
+
+Status: [INVESTIGATING | IDENTIFIED | RESTORING | RESOLVED]
+Time: YYYY-MM-DD HH:MM UTC
+
+Progress Since Last Update:
+- [Action taken]
+- [Discovery made]
+- [Process restored]
+
+Current State:
+- flyer-crawler.projectium.com: [UP|DOWN]
+- stock-alert.projectium.com: [UP|DOWN]
+
+Root Cause: [If identified]
+
+Next Steps:
+- [Planned action]
+
+ETA to Resolution: [If known]
+
+Next Update: In [X] minutes
+```
+
+### Resolution Notification
+
+```text
+Subject: [RESOLVED] PM2 Process Isolation Failure
+
+Status: RESOLVED
+Time Resolved: YYYY-MM-DD HH:MM UTC
+Total Downtime: X minutes
+
+Summary:
+All PM2 processes have been restored. Services are operating normally.
+
+Root Cause:
+[Brief description of what caused the incident]
+
+Impact Summary:
+- flyer-crawler.projectium.com: Down for X minutes
+- stock-alert.projectium.com: Down for X minutes
+- Estimated user impact: [description]
+
+Immediate Actions Taken:
+1. [Action]
+2. [Action]
+
+Follow-up Actions:
+1. [ ] [Preventive measure] - Owner: [Name] - Due: [Date]
+2. [ ] Post-incident review scheduled for [Date]
+
+Post-Incident Review: [Link or scheduled time]
+```
+
+---
+
+## Prevention Measures
+
+### Pre-Deployment Checklist
+
+Before triggering any deployment:
+
+- [ ] Review workflow file for PM2 commands
+- [ ] Confirm no `pm2 stop all`, `pm2 delete all`, or `pm2 restart all`
+- [ ] Verify process names are explicitly listed
+- [ ] Check for concurrent deployment risks
+- [ ] Confirm recent workflow changes were reviewed
+
+### Workflow Review Checklist
+
+When reviewing deployment workflow changes:
+
+- [ ] All PM2 `stop` commands use explicit process names
+- [ ] All PM2 `delete` commands filter by process name pattern
+- [ ] All PM2 `restart` commands use explicit process names
+- [ ] Test deployments filter by `-test` suffix
+- [ ] Production deployments use whitelist array
+
+**Safe Patterns**:
+
+```javascript
+// SAFE: Explicit process names (production)
+const prodProcesses = [
+  'flyer-crawler-api',
+  'flyer-crawler-worker',
+  'flyer-crawler-analytics-worker',
+];
+list.forEach((p) => {
+  if (
+    (p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') &&
+    prodProcesses.includes(p.name)
+  ) {
+    exec('pm2 delete ' + p.pm2_env.pm_id);
+  }
+});
+
+// SAFE: Pattern-based filtering (test)
+list.forEach((p) => {
+  if (p.name && p.name.endsWith('-test')) {
+    exec('pm2 delete ' + p.pm2_env.pm_id);
+  }
+});
+```
+
+**Dangerous Patterns** (NEVER USE):
+
+```bash
+# DANGEROUS - affects ALL applications
+pm2 stop all
+pm2 delete all
+pm2 restart all
+
+# DANGEROUS - no name filtering
+pm2 delete $(pm2 jlist | jq -r '.[] | select(.pm2_env.status == "errored") | .pm_id')
+```
+
+### PM2 Configuration Validation
+
+Before deploying PM2 config changes:
+
+```bash
+# Test configuration locally
+cd /var/www/flyer-crawler.projectium.com
+node -e "console.log(JSON.stringify(require('./ecosystem.config.cjs'), null, 2))"
+
+# Verify process names
+node -e "require('./ecosystem.config.cjs').apps.forEach(a => console.log(a.name))"
+
+# Expected output should match documented process names
+```
+
+### Deployment Monitoring
+
+After every deployment:
+
+```bash
+# Immediate verification
+pm2 list
+
+# Check no unexpected processes were affected
+pm2 list | grep -v flyer-crawler
+# Should still show other apps (e.g., stock-alert)
+
+# Health check
+curl -s https://flyer-crawler.projectium.com/api/health/ready | jq '.data.status'
+```
+
+---
+
+## Contact Information
+
+### On-Call Escalation
+
+| Role              | Contact        | When to Escalate                    |
+| ----------------- | -------------- | ----------------------------------- |
+| Primary On-Call   | [Name/Channel] | First responder                     |
+| Secondary On-Call | [Name/Channel] | If primary unavailable after 10 min |
+| Engineering Lead  | [Name/Channel] | P1 incidents > 30 min               |
+| Product Owner     | [Name/Channel] | User communication needed           |
+
+### External Dependencies
+
+| Service         | Support Channel | When to Contact         |
+| --------------- | --------------- | ----------------------- |
+| Server Provider | [Contact info]  | Hardware/network issues |
+| DNS Provider    | [Contact info]  | DNS resolution failures |
+| SSL Certificate | [Contact info]  | Certificate issues      |
+
+### Communication Channels
+
+| Channel        | Purpose                    |
+| -------------- | -------------------------- |
+| `#incidents`   | Real-time incident updates |
+| `#deployments` | Deployment announcements   |
+| `#engineering` | Technical discussion       |
+| Email list     | Formal notifications       |
+
+---
+
+## Post-Incident Review
+
+### Incident Report Template
+
+```markdown
+# Incident Report: [Title]
+
+## Overview
+
+| Field              | Value             |
+| ------------------ | ----------------- |
+| Date               | YYYY-MM-DD        |
+| Duration           | X hours Y minutes |
+| Severity           | P1/P2/P3          |
+| Incident Commander | [Name]            |
+| Status             | Resolved          |
+
+## Timeline
+
+| Time (UTC) | Event               |
+| ---------- | ------------------- |
+| HH:MM      | [Event description] |
+| HH:MM      | [Event description] |
+
+## Impact
+
+- **Users affected**: [Number/description]
+- **Revenue impact**: [If applicable]
+- **SLA impact**: [If applicable]
+
+## Root Cause
+
+[Detailed technical explanation]
+
+## Resolution
+
+[What was done to resolve the incident]
+
+## Contributing Factors
+
+1. [Factor]
+2. [Factor]
+
+## Action Items
+
+| Action   | Owner  | Due Date | Status |
+| -------- | ------ | -------- | ------ |
+| [Action] | [Name] | [Date]   | [ ]    |
+
+## Lessons Learned
+
+### What Went Well
+
+- [Item]
+
+### What Could Be Improved
+
+- [Item]
+
+## Appendix
+
+- Link to monitoring data
+- Link to relevant logs
+- Link to workflow runs
+```
+
+### Lessons Learned Format
+
+Use "5 Whys" technique:
+
+```text
+Problem: All PM2 processes were killed during deployment
+
+Why 1: The deployment workflow ran `pm2 delete all`
+Why 2: The workflow used an outdated version of the script
+Why 3: Gitea runner cached the old workflow file
+Why 4: No mechanism to verify workflow version before execution
+Why 5: Workflow versioning and audit trail not implemented
+
+Root Cause: Lack of workflow versioning and execution verification
+
+Preventive Measure: Implement workflow hash logging and pre-execution verification
+```
+
+### Action Items Tracking
+
+Create Gitea issues for each action item:
+
+```bash
+# Example using Gitea CLI or API
+gh issue create --title "Implement PM2 state logging in deployment workflows" \
+  --body "Related to incident YYYY-MM-DD. Add pre-deployment PM2 state capture." \
+  --label "incident-follow-up,priority:high"
+```
+
+Track action items in a central location:
+
+| Issue # | Action                           | Owner  | Due    | Status |
+| ------- | -------------------------------- | ------ | ------ | ------ |
+| #123    | Add PM2 state logging            | [Name] | [Date] | Open   |
+| #124    | Implement workflow version hash  | [Name] | [Date] | Open   |
+| #125    | Create deployment lock mechanism | [Name] | [Date] | Open   |
+
+---
+
+## Appendix: PM2 Command Reference
+
+### Safe Commands
+
+```bash
+# Status and monitoring
+pm2 list
+pm2 show <process-name>
+pm2 monit
+pm2 logs <process-name>
+
+# Restart specific processes
+pm2 restart flyer-crawler-api
+pm2 restart flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker
+
+# Reload (zero-downtime, cluster mode only)
+pm2 reload flyer-crawler-api
+
+# Start from config
+pm2 start ecosystem.config.cjs
+pm2 start ecosystem.config.cjs --only flyer-crawler-api
+```
+
+### Dangerous Commands (Use With Caution)
+
+```bash
+# CAUTION: These affect ALL processes
+pm2 stop all        # Stops every PM2 process
+pm2 restart all     # Restarts every PM2 process
+pm2 delete all      # Removes every PM2 process
+
+# CAUTION: Modifies saved process list
+pm2 save            # Overwrites saved process list
+pm2 resurrect       # Restores from saved list
+
+# CAUTION: Affects PM2 daemon
+pm2 kill            # Kills PM2 daemon and all processes
+pm2 update          # Updates PM2 in place (may cause brief outage)
+```
+
+---
+
+## Revision History
+
+| Date       | Author                 | Change                   |
+| ---------- | ---------------------- | ------------------------ |
+| 2026-02-17 | Incident Response Team | Initial runbook creation |

ecosystem-test.config.cjs

@@ -50,7 +50,7 @@ if (fs.existsSync(envPath)) {
 } else {
   console.warn('[ecosystem-test.config.cjs] No .env file found at:', envPath);
   console.warn(
-    '[ecosystem-test.config.cjs] Environment variables must be provided by the shell or CI/CD.'
+    '[ecosystem-test.config.cjs] Environment variables must be provided by the shell or CI/CD.',
   );
 }
 
@@ -60,12 +60,16 @@ if (fs.existsSync(envPath)) {
 // The actual application will fail to start if secrets are missing,
 // which PM2 will handle with its restart logic.
 const requiredSecrets = ['DB_HOST', 'JWT_SECRET', 'GEMINI_API_KEY'];
-const missingSecrets = requiredSecrets.filter(key => !process.env[key]);
+const missingSecrets = requiredSecrets.filter((key) => !process.env[key]);
 
 if (missingSecrets.length > 0) {
-  console.warn('\n[ecosystem.config.test.cjs] WARNING: The following environment variables are MISSING:');
-  missingSecrets.forEach(key => console.warn(`   - ${key}`));
-  console.warn('[ecosystem.config.test.cjs] The application may fail to start if these are required.\n');
+  console.warn(
+    '\n[ecosystem.config.test.cjs] WARNING: The following environment variables are MISSING:',
+  );
+  missingSecrets.forEach((key) => console.warn(`   - ${key}`));
+  console.warn(
+    '[ecosystem.config.test.cjs] The application may fail to start if these are required.\n',
+  );
 } else {
   console.log('[ecosystem.config.test.cjs] Critical environment variables are present.');
 }

ecosystem.config.cjs

@@ -16,11 +16,13 @@
 // The actual application will fail to start if secrets are missing,
 // which PM2 will handle with its restart logic.
 const requiredSecrets = ['DB_HOST', 'JWT_SECRET', 'GEMINI_API_KEY'];
-const missingSecrets = requiredSecrets.filter(key => !process.env[key]);
+const missingSecrets = requiredSecrets.filter((key) => !process.env[key]);
 
 if (missingSecrets.length > 0) {
-  console.warn('\n[ecosystem.config.cjs] WARNING: The following environment variables are MISSING:');
-  missingSecrets.forEach(key => console.warn(`   - ${key}`));
+  console.warn(
+    '\n[ecosystem.config.cjs] WARNING: The following environment variables are MISSING:',
+  );
+  missingSecrets.forEach((key) => console.warn(`   - ${key}`));
   console.warn('[ecosystem.config.cjs] The application may fail to start if these are required.\n');
 } else {
   console.log('[ecosystem.config.cjs] Critical environment variables are present.');

ecosystem.dev.config.cjs

@@ -34,9 +34,7 @@ if (missingVars.length > 0) {
     '\n[ecosystem.dev.config.cjs] WARNING: The following environment variables are MISSING:',
   );
   missingVars.forEach((key) => console.warn(`   - ${key}`));
-  console.warn(
-    '[ecosystem.dev.config.cjs] These should be set in compose.dev.yml or .env.local\n',
-  );
+  console.warn('[ecosystem.dev.config.cjs] These should be set in compose.dev.yml or .env.local\n');
 } else {
   console.log('[ecosystem.dev.config.cjs] Required environment variables are present.');
 }

package.json

@@ -1,8 +1,11 @@
 {
   "name": "flyer-crawler",
   "private": true,
-  "version": "0.13.0",
+  "version": "0.16.2",
   "type": "module",
+  "engines": {
+    "node": ">=18.0.0"
+  },
   "scripts": {
     "dev": "concurrently \"npm:start:dev\" \"vite\"",
     "dev:container": "concurrently \"npm:start:dev\" \"vite --host\"",
@@ -24,14 +27,17 @@
     "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
     "type-check": "tsc --noEmit",
     "validate": "(prettier --check . || true) && npm run type-check && (npm run lint || true)",
-    "clean": "rimraf coverage .coverage",
+    "clean": "node scripts/clean.mjs",
     "start:dev": "NODE_ENV=development tsx watch server.ts",
     "start:prod": "NODE_ENV=production tsx server.ts",
     "start:test": "NODE_ENV=test NODE_V8_COVERAGE=.coverage/tmp/integration-server tsx server.ts",
     "db:reset:dev": "NODE_ENV=development tsx src/db/seed.ts",
     "db:reset:test": "NODE_ENV=test tsx src/db/seed.ts",
     "worker:prod": "NODE_ENV=production tsx src/services/queueService.server.ts",
-    "prepare": "node -e \"try { require.resolve('husky') } catch (e) { process.exit(0) }\" && husky || true"
+    "prepare": "node -e \"try { require.resolve('husky') } catch (e) { process.exit(0) }\" && husky || true",
+    "tsoa:spec": "tsoa spec",
+    "tsoa:routes": "tsoa routes",
+    "tsoa:build": "tsoa spec-and-routes"
   },
   "dependencies": {
     "@bull-board/api": "^6.14.2",
@@ -74,8 +80,8 @@
     "react-router-dom": "^7.9.6",
     "recharts": "^3.4.1",
     "sharp": "^0.34.5",
-    "swagger-jsdoc": "^6.2.8",
     "swagger-ui-express": "^5.0.1",
+    "tsoa": "^6.6.0",
     "tsx": "^4.20.6",
     "zod": "^4.2.1",
     "zxcvbn": "^4.4.2",
@@ -110,7 +116,6 @@
     "@types/react-dom": "^19.2.3",
     "@types/sharp": "^0.31.1",
     "@types/supertest": "^6.0.3",
-    "@types/swagger-jsdoc": "^6.0.4",
     "@types/swagger-ui-express": "^4.1.8",
     "@types/ws": "^8.18.1",
     "@types/zxcvbn": "^4.4.5",
@@ -139,7 +144,6 @@
     "pino-pretty": "^13.1.3",
     "postcss": "^8.5.6",
     "prettier": "^3.3.2",
-    "rimraf": "^6.1.2",
     "supertest": "^7.1.4",
     "tailwindcss": "^4.1.17",
     "testcontainers": "^11.8.1",

plans/adr-0005-implementation-plan.md

@@ -7,6 +7,7 @@
 ## Current State Analysis
 
 ### What We Have
+
 1. ✅ **TanStack Query v5.90.12 already installed** in package.json
 2. ❌ **Not being used** - Custom hooks reimplementing its functionality
 3. ❌ **Custom `useInfiniteQuery` hook** ([src/hooks/useInfiniteQuery.ts](../src/hooks/useInfiniteQuery.ts)) using `useState`/`useEffect`
@@ -16,10 +17,12 @@
 ### Current Data Fetching Patterns
 
 #### Pattern 1: Custom useInfiniteQuery Hook
+
 **Location**: [src/hooks/useInfiniteQuery.ts](../src/hooks/useInfiniteQuery.ts)
 **Used By**: [src/providers/FlyersProvider.tsx](../src/providers/FlyersProvider.tsx)
 
 **Problems**:
+
 - Reimplements pagination logic that TanStack Query provides
 - Manual loading state management
 - Manual error handling
@@ -28,10 +31,12 @@
 - No request deduplication
 
 #### Pattern 2: useApiOnMount Hook
+
 **Location**: Unknown (needs investigation)
 **Used By**: [src/providers/UserDataProvider.tsx](../src/providers/UserDataProvider.tsx)
 
 **Problems**:
+
 - Fetches data on mount only
 - Manual loading/error state management
 - No caching between unmount/remount
@@ -42,6 +47,7 @@
 ### Phase 1: Setup TanStack Query Infrastructure (Day 1)
 
 #### 1.1 Create QueryClient Configuration
+
 **File**: `src/config/queryClient.ts`
 
 ```typescript
@@ -51,7 +57,7 @@ export const queryClient = new QueryClient({
   defaultOptions: {
     queries: {
       staleTime: 1000 * 60 * 5, // 5 minutes
-      gcTime: 1000 * 60 * 30,    // 30 minutes (formerly cacheTime)
+      gcTime: 1000 * 60 * 30, // 30 minutes (formerly cacheTime)
       retry: 1,
       refetchOnWindowFocus: false,
       refetchOnMount: true,
@@ -64,9 +70,11 @@ export const queryClient = new QueryClient({
 ```
 
 #### 1.2 Wrap App with QueryClientProvider
+
 **File**: `src/providers/AppProviders.tsx`
 
 Add TanStack Query provider at the top level:
+
 ```typescript
 import { QueryClientProvider } from '@tanstack/react-query';
 import { ReactQueryDevtools } from '@tanstack/react-query-devtools';
@@ -158,6 +166,7 @@ export const FlyersProvider: React.FC<{ children: ReactNode }> = ({ children })
 ```
 
 **Benefits**:
+
 - ~100 lines of code removed
 - Automatic caching
 - Background refetching
@@ -170,6 +179,7 @@ export const FlyersProvider: React.FC<{ children: ReactNode }> = ({ children })
 **Action**: Use TanStack Query's `useQuery` for watched items and shopping lists
 
 **New Files**:
+
 - `src/hooks/queries/useWatchedItemsQuery.ts`
 - `src/hooks/queries/useShoppingListsQuery.ts`
 
@@ -208,6 +218,7 @@ export const useShoppingListsQuery = (enabled: boolean) => {
 ```
 
 **Updated Provider**:
+
 ```typescript
 import React, { ReactNode, useMemo } from 'react';
 import { UserDataContext } from '../contexts/UserDataContext';
@@ -240,6 +251,7 @@ export const UserDataProvider: React.FC<{ children: ReactNode }> = ({ children }
 ```
 
 **Benefits**:
+
 - ~40 lines of code removed
 - No manual state synchronization
 - Automatic cache invalidation on user logout
@@ -292,7 +304,7 @@ export const useUpdateShoppingListMutation = () => {
 
       // Optimistically update
       queryClient.setQueryData(['shopping-lists'], (old) =>
-        old.map((list) => (list.id === newList.id ? newList : list))
+        old.map((list) => (list.id === newList.id ? newList : list)),
       );
 
       return { previousLists };
@@ -313,20 +325,24 @@ export const useUpdateShoppingListMutation = () => {
 ### Phase 4: Remove Old Custom Hooks (Day 9)
 
 #### Files to Remove:
+
 - ❌ `src/hooks/useInfiniteQuery.ts` (if not used elsewhere)
 - ❌ `src/hooks/useApiOnMount.ts` (needs investigation)
 
 #### Files to Update:
+
 - Update any remaining usages in other components
 
 ### Phase 5: Testing & Documentation (Day 10)
 
 #### 5.1 Update Tests
+
 - Update provider tests to work with QueryClient
 - Add tests for new query hooks
 - Add tests for mutation hooks
 
 #### 5.2 Update Documentation
+
 - Mark ADR-0005 as **Accepted** and **Implemented**
 - Add usage examples to documentation
 - Update developer onboarding guide
@@ -334,11 +350,13 @@ export const useUpdateShoppingListMutation = () => {
 ## Migration Checklist
 
 ### Prerequisites
+
 - [x] TanStack Query installed
 - [ ] QueryClient configuration created
 - [ ] App wrapped with QueryClientProvider
 
 ### Queries
+
 - [ ] Flyers infinite query migrated
 - [ ] Watched items query migrated
 - [ ] Shopping lists query migrated
@@ -346,6 +364,7 @@ export const useUpdateShoppingListMutation = () => {
 - [ ] Active deals query migrated (if applicable)
 
 ### Mutations
+
 - [ ] Add watched item mutation
 - [ ] Remove watched item mutation
 - [ ] Update shopping list mutation
@@ -353,12 +372,14 @@ export const useUpdateShoppingListMutation = () => {
 - [ ] Remove shopping list item mutation
 
 ### Cleanup
+
 - [ ] Remove custom useInfiniteQuery hook
 - [ ] Remove custom useApiOnMount hook
 - [ ] Update all tests
 - [ ] Remove redundant state management code
 
 ### Documentation
+
 - [ ] Update ADR-0005 status to "Accepted"
 - [ ] Add usage guidelines to README
 - [ ] Document query key conventions
@@ -367,10 +388,12 @@ export const useUpdateShoppingListMutation = () => {
 ## Benefits Summary
 
 ### Code Reduction
+
 - **Estimated**: ~300-500 lines of custom hook code removed
 - **Result**: Simpler, more maintainable codebase
 
 ### Performance Improvements
+
 - ✅ Automatic request deduplication
 - ✅ Background data synchronization
 - ✅ Smart cache invalidation
@@ -378,12 +401,14 @@ export const useUpdateShoppingListMutation = () => {
 - ✅ Automatic retry logic
 
 ### Developer Experience
+
 - ✅ React Query Devtools for debugging
 - ✅ Type-safe query hooks
 - ✅ Standardized patterns across the app
 - ✅ Less boilerplate code
 
 ### User Experience
+
 - ✅ Faster perceived performance (cached data)
 - ✅ Better offline experience
 - ✅ Smoother UI interactions (optimistic updates)
@@ -392,11 +417,13 @@ export const useUpdateShoppingListMutation = () => {
 ## Risk Assessment
 
 ### Low Risk
+
 - TanStack Query is industry-standard
 - Already installed in project
 - Incremental migration possible
 
 ### Mitigation Strategies
+
 1. **Test thoroughly** - Maintain existing test coverage
 2. **Migrate incrementally** - One provider at a time
 3. **Monitor performance** - Use React Query Devtools

plans/adr-0005-phase-2-summary.md

@@ -45,6 +45,7 @@ Successfully completed Phase 2 of ADR-0005 enforcement by migrating all remainin
 ## Code Reduction Summary
 
 ### Phase 1 + Phase 2 Combined
+
 - **Total custom state management code removed**: ~200 lines
 - **New query hooks created**: 5 files (~200 lines of standardized code)
 - **Providers simplified**: 4 files
@@ -53,34 +54,38 @@ Successfully completed Phase 2 of ADR-0005 enforcement by migrating all remainin
 ## Technical Improvements
 
 ### 1. Intelligent Caching Strategy
+
 ```typescript
 // Master items (rarely change) - 10 min stale time
-useMasterItemsQuery() // staleTime: 10 minutes
+useMasterItemsQuery(); // staleTime: 10 minutes
 
 // Flyers (moderate changes) - 2 min stale time
-useFlyersQuery() // staleTime: 2 minutes
+useFlyersQuery(); // staleTime: 2 minutes
 
 // User data (frequent changes) - 1 min stale time
-useWatchedItemsQuery() // staleTime: 1 minute
-useShoppingListsQuery() // staleTime: 1 minute
+useWatchedItemsQuery(); // staleTime: 1 minute
+useShoppingListsQuery(); // staleTime: 1 minute
 
 // Flyer items (static) - 5 min stale time
-useFlyerItemsQuery() // staleTime: 5 minutes
+useFlyerItemsQuery(); // staleTime: 5 minutes
 ```
 
 ### 2. Per-Resource Caching
+
 Each flyer's items are cached separately:
+
 ```typescript
 // Flyer 1 items cached with key: ['flyer-items', 1]
-useFlyerItemsQuery(1)
+useFlyerItemsQuery(1);
 
 // Flyer 2 items cached with key: ['flyer-items', 2]
-useFlyerItemsQuery(2)
+useFlyerItemsQuery(2);
 
 // Both caches persist independently
 ```
 
 ### 3. Automatic Query Disabling
+
 ```typescript
 // Query automatically disabled when flyerId is undefined
 const { data } = useFlyerItemsQuery(selectedFlyer?.flyer_id);
@@ -90,24 +95,28 @@ const { data } = useFlyerItemsQuery(selectedFlyer?.flyer_id);
 ## Benefits Achieved
 
 ### Performance
+
 - ✅ **Reduced API calls** - Data cached between component unmounts
 - ✅ **Background refetching** - Stale data updates in background
 - ✅ **Request deduplication** - Multiple components can use same query
 - ✅ **Optimized cache times** - Different strategies for different data types
 
 ### Code Quality
+
 - ✅ **Removed ~50 more lines** of custom state management
 - ✅ **Eliminated useApiOnMount** from all providers
 - ✅ **Standardized patterns** - All queries follow same structure
 - ✅ **Better type safety** - TypeScript types flow through queries
 
 ### Developer Experience
+
 - ✅ **React Query Devtools** - Inspect all queries and cache
 - ✅ **Easier debugging** - Clear query states and transitions
 - ✅ **Less boilerplate** - No manual loading/error state management
 - ✅ **Automatic retries** - Failed queries retry automatically
 
 ### User Experience
+
 - ✅ **Faster perceived performance** - Cached data shows instantly
 - ✅ **Fresh data** - Background refetching keeps data current
 - ✅ **Better offline handling** - Cached data available offline
@@ -116,12 +125,14 @@ const { data } = useFlyerItemsQuery(selectedFlyer?.flyer_id);
 ## Remaining Work
 
 ### Phase 3: Mutations (Next)
+
 - [ ] Create mutation hooks for data modifications
 - [ ] Add/remove watched items with optimistic updates
 - [ ] Shopping list CRUD operations
 - [ ] Proper cache invalidation strategies
 
 ### Phase 4: Cleanup (Final)
+
 - [ ] Remove `useApiOnMount` hook entirely
 - [ ] Remove `useApi` hook if no longer used
 - [ ] Remove stub implementations in providers
@@ -159,10 +170,13 @@ Before merging, test the following:
 ## Migration Notes
 
 ### Breaking Changes
+
 None! All providers maintain the same interface.
 
 ### Deprecation Warnings
+
 The following will log warnings if used:
+
 - `setWatchedItems()` in UserDataProvider
 - `setShoppingLists()` in UserDataProvider
 

plans/adr-0005-phase-3-summary.md

@@ -12,6 +12,7 @@ Successfully completed Phase 3 of ADR-0005 enforcement by creating all mutation
 ### Mutation Hooks
 
 All mutation hooks follow a consistent pattern:
+
 - Automatic cache invalidation via `queryClient.invalidateQueries()`
 - Success/error notifications via notification service
 - Proper TypeScript types for parameters
@@ -113,15 +114,12 @@ function WatchedItemsManager() {
       {
         onSuccess: () => console.log('Added to watched list!'),
         onError: (error) => console.error('Failed:', error),
-      }
+      },
     );
   };
 
   return (
-    <button
-      onClick={handleAdd}
-      disabled={addWatchedItem.isPending}
-    >
+    <button onClick={handleAdd} disabled={addWatchedItem.isPending}>
       {addWatchedItem.isPending ? 'Adding...' : 'Add to Watched List'}
     </button>
   );
@@ -134,7 +132,7 @@ function WatchedItemsManager() {
 import {
   useCreateShoppingListMutation,
   useAddShoppingListItemMutation,
-  useUpdateShoppingListItemMutation
+  useUpdateShoppingListItemMutation,
 } from '../hooks/mutations';
 
 function ShoppingListManager() {
@@ -149,14 +147,14 @@ function ShoppingListManager() {
   const handleAddItem = (listId: number, masterItemId: number) => {
     addItem.mutate({
       listId,
-      item: { masterItemId }
+      item: { masterItemId },
     });
   };
 
   const handleMarkPurchased = (itemId: number) => {
     updateItem.mutate({
       itemId,
-      updates: { is_purchased: true }
+      updates: { is_purchased: true },
     });
   };
 
@@ -172,23 +170,27 @@ function ShoppingListManager() {
 ## Benefits Achieved
 
 ### Performance
+
 - ✅ **Automatic cache updates** - Queries automatically refetch after mutations
 - ✅ **Request deduplication** - Multiple mutation calls are properly queued
 - ✅ **Optimistic updates ready** - Infrastructure in place for Phase 4
 
 ### Code Quality
+
 - ✅ **Standardized pattern** - All mutations follow the same structure
 - ✅ **Comprehensive documentation** - JSDoc with examples for every hook
 - ✅ **Type safety** - Full TypeScript types for all parameters
 - ✅ **Error handling** - Consistent error handling and user notifications
 
 ### Developer Experience
+
 - ✅ **React Query Devtools** - Inspect mutation states in real-time
 - ✅ **Easy imports** - Barrel export for clean imports
 - ✅ **Consistent API** - Same pattern across all mutations
 - ✅ **Built-in loading states** - `isPending`, `isError`, `isSuccess` states
 
 ### User Experience
+
 - ✅ **Automatic notifications** - Success/error toasts on all mutations
 - ✅ **Fresh data** - Queries automatically update after mutations
 - ✅ **Loading states** - UI can show loading indicators during mutations
@@ -197,6 +199,7 @@ function ShoppingListManager() {
 ## Current State
 
 ### Completed
+
 - ✅ All 7 mutation hooks created
 - ✅ Barrel export created for easy imports
 - ✅ Comprehensive documentation with examples
@@ -225,12 +228,14 @@ These hooks are actively used throughout the application and will need careful r
 ### Phase 4: Hook Refactoring & Cleanup
 
 #### Step 1: Refactor useWatchedItems
+
 - [ ] Replace `useApi` calls with mutation hooks
 - [ ] Remove manual state management logic
 - [ ] Simplify to just wrap mutation hooks with custom logic
 - [ ] Update all tests
 
 #### Step 2: Refactor useShoppingLists
+
 - [ ] Replace `useApi` calls with mutation hooks
 - [ ] Remove manual state management logic
 - [ ] Remove complex state synchronization
@@ -238,17 +243,20 @@ These hooks are actively used throughout the application and will need careful r
 - [ ] Update all tests
 
 #### Step 3: Remove Deprecated Code
+
 - [ ] Remove `setWatchedItems` from UserDataContext
 - [ ] Remove `setShoppingLists` from UserDataContext
 - [ ] Remove `useApi` hook (if no longer used)
 - [ ] Remove `useApiOnMount` hook (already deprecated)
 
 #### Step 4: Add Optimistic Updates (Optional)
+
 - [ ] Implement optimistic updates for better UX
 - [ ] Use `onMutate` to update cache before server response
 - [ ] Implement rollback on error
 
 #### Step 5: Documentation & Testing
+
 - [ ] Update all component documentation
 - [ ] Update developer onboarding guide
 - [ ] Add integration tests for mutation flows

plans/adr-0005-phase-4-summary.md

@@ -41,13 +41,13 @@ Successfully completed Phase 4 of ADR-0005 enforcement by refactoring the remain
 
 ### Phase 1-4 Combined
 
-| Metric | Before | After | Reduction |
-|--------|--------|-------|-----------|
-| **useWatchedItems** | 77 lines | 71 lines | -6 lines (cleaner) |
-| **useShoppingLists** | 222 lines | 176 lines | -46 lines (-21%) |
-| **Manual state management** | ~150 lines | 0 lines | -150 lines (100%) |
-| **useApi dependencies** | 7 hooks | 0 hooks | -7 dependencies |
-| **Total for Phase 4** | 299 lines | 247 lines | **-52 lines (-17%)** |
+| Metric                      | Before     | After     | Reduction            |
+| --------------------------- | ---------- | --------- | -------------------- |
+| **useWatchedItems**         | 77 lines   | 71 lines  | -6 lines (cleaner)   |
+| **useShoppingLists**        | 222 lines  | 176 lines | -46 lines (-21%)     |
+| **Manual state management** | ~150 lines | 0 lines   | -150 lines (100%)    |
+| **useApi dependencies**     | 7 hooks    | 0 hooks   | -7 dependencies      |
+| **Total for Phase 4**       | 299 lines  | 247 lines | **-52 lines (-17%)** |
 
 ### Overall ADR-0005 Impact (Phases 1-4)
 
@@ -61,45 +61,54 @@ Successfully completed Phase 4 of ADR-0005 enforcement by refactoring the remain
 ### 1. Simplified useWatchedItems
 
 **Before (useApi pattern):**
+
 ```typescript
 const { execute: addWatchedItemApi, error: addError } = useApi<MasterGroceryItem, [string, string]>(
-  (itemName, category) => apiClient.addWatchedItem(itemName, category)
+  (itemName, category) => apiClient.addWatchedItem(itemName, category),
 );
 
-const addWatchedItem = useCallback(async (itemName: string, category: string) => {
-  if (!userProfile) return;
-  const updatedOrNewItem = await addWatchedItemApi(itemName, category);
+const addWatchedItem = useCallback(
+  async (itemName: string, category: string) => {
+    if (!userProfile) return;
+    const updatedOrNewItem = await addWatchedItemApi(itemName, category);
 
-  if (updatedOrNewItem) {
-    setWatchedItems((currentItems) => {
-      const itemExists = currentItems.some(
-        (item) => item.master_grocery_item_id === updatedOrNewItem.master_grocery_item_id
-      );
-      if (!itemExists) {
-        return [...currentItems, updatedOrNewItem].sort((a, b) => a.name.localeCompare(b.name));
-      }
-      return currentItems;
-    });
-  }
-}, [userProfile, setWatchedItems, addWatchedItemApi]);
+    if (updatedOrNewItem) {
+      setWatchedItems((currentItems) => {
+        const itemExists = currentItems.some(
+          (item) => item.master_grocery_item_id === updatedOrNewItem.master_grocery_item_id,
+        );
+        if (!itemExists) {
+          return [...currentItems, updatedOrNewItem].sort((a, b) => a.name.localeCompare(b.name));
+        }
+        return currentItems;
+      });
+    }
+  },
+  [userProfile, setWatchedItems, addWatchedItemApi],
+);
 ```
 
 **After (TanStack Query):**
+
 ```typescript
 const addWatchedItemMutation = useAddWatchedItemMutation();
 
-const addWatchedItem = useCallback(async (itemName: string, category: string) => {
-  if (!userProfile) return;
+const addWatchedItem = useCallback(
+  async (itemName: string, category: string) => {
+    if (!userProfile) return;
 
-  try {
-    await addWatchedItemMutation.mutateAsync({ itemName, category });
-  } catch (error) {
-    console.error('useWatchedItems: Failed to add item', error);
-  }
-}, [userProfile, addWatchedItemMutation]);
+    try {
+      await addWatchedItemMutation.mutateAsync({ itemName, category });
+    } catch (error) {
+      console.error('useWatchedItems: Failed to add item', error);
+    }
+  },
+  [userProfile, addWatchedItemMutation],
+);
 ```
 
 **Benefits:**
+
 - No manual state updates
 - Cache automatically invalidated
 - Success/error notifications handled
@@ -108,6 +117,7 @@ const addWatchedItem = useCallback(async (itemName: string, category: string) =>
 ### 2. Dramatically Simplified useShoppingLists
 
 **Before:** 222 lines with:
+
 - 5 separate `useApi` hooks
 - Complex manual state synchronization
 - Client-side duplicate checking
@@ -115,6 +125,7 @@ const addWatchedItem = useCallback(async (itemName: string, category: string) =>
 - Try-catch blocks for each operation
 
 **After:** 176 lines with:
+
 - 5 TanStack Query mutation hooks
 - Zero manual state management
 - Server-side validation
@@ -122,6 +133,7 @@ const addWatchedItem = useCallback(async (itemName: string, category: string) =>
 - Consistent error handling
 
 **Removed Complexity:**
+
 ```typescript
 // OLD: Manual state update with complex logic
 const addItemToList = useCallback(async (listId: number, item: {...}) => {
@@ -158,6 +170,7 @@ const addItemToList = useCallback(async (listId: number, item: {...}) => {
 ```
 
 **NEW: Simple mutation call:**
+
 ```typescript
 const addItemToList = useCallback(async (listId: number, item: {...}) => {
   if (!userProfile) return;
@@ -173,18 +186,20 @@ const addItemToList = useCallback(async (listId: number, item: {...}) => {
 ### 3. Cleaner Context Interface
 
 **Before:**
+
 ```typescript
 export interface UserDataContextType {
   watchedItems: MasterGroceryItem[];
   shoppingLists: ShoppingList[];
-  setWatchedItems: React.Dispatch<React.SetStateAction<MasterGroceryItem[]>>;  // ❌ Removed
-  setShoppingLists: React.Dispatch<React.SetStateAction<ShoppingList[]>>;     // ❌ Removed
+  setWatchedItems: React.Dispatch<React.SetStateAction<MasterGroceryItem[]>>; // ❌ Removed
+  setShoppingLists: React.Dispatch<React.SetStateAction<ShoppingList[]>>; // ❌ Removed
   isLoading: boolean;
   error: string | null;
 }
 ```
 
 **After:**
+
 ```typescript
 export interface UserDataContextType {
   watchedItems: MasterGroceryItem[];
@@ -195,6 +210,7 @@ export interface UserDataContextType {
 ```
 
 **Why this matters:**
+
 - Context now truly represents "server state" (read-only from context perspective)
 - Mutations are handled separately via mutation hooks
 - Clear separation of concerns: queries for reads, mutations for writes
@@ -202,12 +218,14 @@ export interface UserDataContextType {
 ## Benefits Achieved
 
 ### Performance
+
 - ✅ **Eliminated redundant refetches** - No more manual state sync causing stale data
 - ✅ **Automatic cache updates** - Mutations invalidate queries automatically
 - ✅ **Optimistic updates ready** - Infrastructure supports adding optimistic updates in future
 - ✅ **Reduced bundle size** - 52 lines less code in custom hooks
 
 ### Code Quality
+
 - ✅ **Removed 150+ lines** of manual state management across all hooks
 - ✅ **Eliminated useApi dependency** from user-facing hooks
 - ✅ **Consistent error handling** - All mutations use same pattern
@@ -215,12 +233,14 @@ export interface UserDataContextType {
 - ✅ **Removed complex logic** - No more client-side duplicate checking
 
 ### Developer Experience
+
 - ✅ **Simpler hook implementations** - 46 lines less in useShoppingLists alone
 - ✅ **Easier debugging** - React Query Devtools show all mutations
 - ✅ **Type safety** - Mutation hooks provide full TypeScript types
 - ✅ **Consistent patterns** - All operations follow same mutation pattern
 
 ### User Experience
+
 - ✅ **Automatic notifications** - Success/error toasts on all operations
 - ✅ **Fresh data** - Cache automatically updates after mutations
 - ✅ **Better error messages** - Server-side validation provides better feedback
@@ -231,6 +251,7 @@ export interface UserDataContextType {
 ### Breaking Changes
 
 **Direct UserDataContext usage:**
+
 ```typescript
 // ❌ OLD: This no longer works
 const { setWatchedItems } = useUserData();
@@ -245,6 +266,7 @@ addWatchedItem.mutate({ itemName: 'Milk', category: 'Dairy' });
 ### Non-Breaking Changes
 
 **Custom hooks maintain backward compatibility:**
+
 ```typescript
 // ✅ STILL WORKS: Custom hooks maintain same interface
 const { addWatchedItem, removeWatchedItem } = useWatchedItems();
@@ -273,6 +295,7 @@ addWatchedItem.mutate({ itemName: 'Milk', category: 'Dairy' });
 ### Testing Approach
 
 **Current tests mock useApi:**
+
 ```typescript
 vi.mock('./useApi');
 const mockedUseApi = vi.mocked(useApi);
@@ -280,6 +303,7 @@ mockedUseApi.mockReturnValue({ execute: mockFn, error: null, loading: false });
 ```
 
 **New tests should mock mutations:**
+
 ```typescript
 vi.mock('./mutations', () => ({
   useAddWatchedItemMutation: vi.fn(),
@@ -300,17 +324,20 @@ useAddWatchedItemMutation.mockReturnValue({
 ## Remaining Work
 
 ### Immediate Follow-Up (Phase 4.5)
+
 - [ ] Update [src/hooks/useWatchedItems.test.tsx](../src/hooks/useWatchedItems.test.tsx)
 - [ ] Update [src/hooks/useShoppingLists.test.tsx](../src/hooks/useShoppingLists.test.tsx)
 - [ ] Add integration tests for mutation flows
 
 ### Phase 5: Admin Features (Next)
+
 - [ ] Create query hooks for admin features
 - [ ] Migrate ActivityLog.tsx
 - [ ] Migrate AdminStatsPage.tsx
 - [ ] Migrate CorrectionsPage.tsx
 
 ### Phase 6: Final Cleanup
+
 - [ ] Remove `useApi` hook (no longer used by core features)
 - [ ] Remove `useApiOnMount` hook (deprecated)
 - [ ] Remove custom `useInfiniteQuery` hook (deprecated)
@@ -350,12 +377,14 @@ None! Phase 4 implementation is complete and working.
 ## Performance Metrics
 
 ### Before Phase 4
+
 - Multiple redundant state updates per mutation
 - Client-side validation adding latency
 - Complex nested state updates causing re-renders
 - Manual cache synchronization prone to bugs
 
 ### After Phase 4
+
 - Single mutation triggers automatic cache update
 - Server-side validation (proper place for business logic)
 - Simple refetch after mutation (no manual updates)
@@ -372,6 +401,7 @@ None! Phase 4 implementation is complete and working.
 Phase 4 successfully refactored the remaining custom hooks (`useWatchedItems` and `useShoppingLists`) to use TanStack Query mutations, eliminating all manual state management for user-facing features. The codebase is now significantly simpler, more maintainable, and follows consistent patterns throughout.
 
 **Key Achievements:**
+
 - Removed 52 lines of code from custom hooks
 - Eliminated 7 `useApi` dependencies
 - Removed 150+ lines of manual state management
@@ -380,6 +410,7 @@ Phase 4 successfully refactored the remaining custom hooks (`useWatchedItems` an
 - Zero regressions in functionality
 
 **Next Steps**:
+
 1. Update tests for refactored hooks (Phase 4.5 - follow-up)
 2. Proceed to Phase 5 to migrate admin features
 3. Final cleanup in Phase 6

plans/adr-0005-phase-5-summary.md

@@ -100,6 +100,7 @@ Successfully completed Phase 5 of ADR-0005 by migrating all admin features from
 ### Before (Manual State Management)
 
 **ActivityLog.tsx - Before:**
+
 ```typescript
 const [logs, setLogs] = useState<ActivityLogItem[]>([]);
 const [isLoading, setIsLoading] = useState(true);
@@ -116,8 +117,7 @@ useEffect(() => {
     setError(null);
     try {
       const response = await fetchActivityLog(20, 0);
-      if (!response.ok)
-        throw new Error((await response.json()).message || 'Failed to fetch logs');
+      if (!response.ok) throw new Error((await response.json()).message || 'Failed to fetch logs');
       setLogs(await response.json());
     } catch (err) {
       setError(err instanceof Error ? err.message : 'Failed to load activity.');
@@ -131,6 +131,7 @@ useEffect(() => {
 ```
 
 **ActivityLog.tsx - After:**
+
 ```typescript
 const { data: logs = [], isLoading, error } = useActivityLogQuery(20, 0);
 ```
@@ -138,6 +139,7 @@ const { data: logs = [], isLoading, error } = useActivityLogQuery(20, 0);
 ### Before (Manual Parallel Fetching)
 
 **CorrectionsPage.tsx - Before:**
+
 ```typescript
 const [corrections, setCorrections] = useState<SuggestedCorrection[]>([]);
 const [isLoading, setIsLoading] = useState(true);
@@ -172,6 +174,7 @@ useEffect(() => {
 ```
 
 **CorrectionsPage.tsx - After:**
+
 ```typescript
 const {
   data: corrections = [],
@@ -180,15 +183,9 @@ const {
   refetch: refetchCorrections,
 } = useSuggestedCorrectionsQuery();
 
-const {
-  data: masterItems = [],
-  isLoading: isLoadingMasterItems,
-} = useMasterItemsQuery();
+const { data: masterItems = [], isLoading: isLoadingMasterItems } = useMasterItemsQuery();
 
-const {
-  data: categories = [],
-  isLoading: isLoadingCategories,
-} = useCategoriesQuery();
+const { data: categories = [], isLoading: isLoadingCategories } = useCategoriesQuery();
 
 const isLoading = isLoadingCorrections || isLoadingMasterItems || isLoadingCategories;
 const error = correctionsError?.message || null;
@@ -197,12 +194,14 @@ const error = correctionsError?.message || null;
 ## Benefits Achieved
 
 ### Performance
+
 - ✅ **Automatic parallel fetching** - CorrectionsPage fetches 3 queries simultaneously
 - ✅ **Shared cache** - Multiple components can reuse the same queries
 - ✅ **Smart refetching** - Queries refetch on window focus automatically
 - ✅ **Stale-while-revalidate** - Shows cached data while fetching fresh data
 
 ### Code Quality
+
 - ✅ **~77 lines removed** from admin components (-20% average)
 - ✅ **Eliminated manual state management** for all admin queries
 - ✅ **Consistent error handling** across all admin features
@@ -210,6 +209,7 @@ const error = correctionsError?.message || null;
 - ✅ **Removed complex Promise.all logic** from CorrectionsPage
 
 ### Developer Experience
+
 - ✅ **Simpler component code** - Focus on UI, not data fetching
 - ✅ **Easier debugging** - React Query Devtools show all queries
 - ✅ **Type safety** - Query hooks provide full TypeScript types
@@ -217,6 +217,7 @@ const error = correctionsError?.message || null;
 - ✅ **Consistent patterns** - All admin features follow same query pattern
 
 ### User Experience
+
 - ✅ **Faster perceived performance** - Show cached data instantly
 - ✅ **Background updates** - Data refreshes without loading spinners
 - ✅ **Network resilience** - Automatic retry on failure
@@ -224,12 +225,12 @@ const error = correctionsError?.message || null;
 
 ## Code Reduction Summary
 
-| Component | Before | After | Reduction |
-|-----------|--------|-------|-----------|
-| **ActivityLog.tsx** | 158 lines | 133 lines | -25 lines (-16%) |
-| **AdminStatsPage.tsx** | 104 lines | 78 lines | -26 lines (-25%) |
+| Component               | Before                  | After             | Reduction                   |
+| ----------------------- | ----------------------- | ----------------- | --------------------------- |
+| **ActivityLog.tsx**     | 158 lines               | 133 lines         | -25 lines (-16%)            |
+| **AdminStatsPage.tsx**  | 104 lines               | 78 lines          | -26 lines (-25%)            |
 | **CorrectionsPage.tsx** | ~120 lines (state mgmt) | ~50 lines (hooks) | ~70 lines (-58% state code) |
-| **Total Reduction** | ~382 lines | ~261 lines | **~121 lines (-32%)** |
+| **Total Reduction**     | ~382 lines              | ~261 lines        | **~121 lines (-32%)**       |
 
 **Note**: CorrectionsPage reduction is approximate as the full component includes rendering logic that wasn't changed.
 
@@ -334,6 +335,7 @@ export const AdminComponent: React.FC = () => {
 All changes are backward compatible at the component level. Components maintain their existing props and behavior.
 
 **Example: ActivityLog component still accepts same props:**
+
 ```typescript
 interface ActivityLogProps {
   userProfile: UserProfile | null;

plans/mcp-server-access-summary.md

@@ -2,7 +2,8 @@
 
 **Date**: 2026-01-08  
 **Environment**: Windows 10, VSCode with Claude Code integration  
-**Configuration Files**: 
+**Configuration Files**:
+
 - [`mcp.json`](c:/Users/games3/AppData/Roaming/Code/User/mcp.json:1)
 - [`mcp-servers.json`](c:/Users/games3/AppData/Roaming/Code/User/globalStorage/mcp-servers.json:1)
 
@@ -13,6 +14,7 @@
 You have **8 MCP servers** configured in your environment. These servers extend Claude's capabilities by providing specialized tools for browser automation, file conversion, Git hosting integration, container management, filesystem access, and HTTP requests.
 
 **Key Findings**:
+
 - ✅ 7 servers are properly configured and ready to test
 - ⚠️ 1 server requires token update (gitea-lan)
 - 📋 Testing guide and automated script provided
@@ -23,11 +25,13 @@ You have **8 MCP servers** configured in your environment. These servers extend
 ## MCP Server Inventory
 
 ### 1. Chrome DevTools MCP Server
+
 **Status**: ✅ Configured  
 **Type**: Browser Automation  
 **Command**: `npx -y chrome-devtools-mcp@latest`
 
 **Capabilities**:
+
 - Launch and control Chrome browser
 - Navigate to URLs
 - Click elements and interact with DOM
@@ -36,6 +40,7 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Execute JavaScript in browser context
 
 **Use Cases**:
+
 - Web scraping
 - Automated testing
 - UI verification
@@ -43,6 +48,7 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Debugging frontend issues
 
 **Configuration Details**:
+
 - Headless mode: Enabled
 - Isolated: False (shares browser state)
 - Channel: Stable
@@ -50,11 +56,13 @@ You have **8 MCP servers** configured in your environment. These servers extend
 ---
 
 ### 2. Markitdown MCP Server
+
 **Status**: ✅ Configured  
 **Type**: File Conversion  
 **Command**: `C:\Users\games3\.local\bin\uvx.exe markitdown-mcp`
 
 **Capabilities**:
+
 - Convert PDF files to markdown
 - Convert DOCX files to markdown
 - Convert HTML to markdown
@@ -62,24 +70,28 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Convert PowerPoint presentations
 
 **Use Cases**:
+
 - Document processing
 - Content extraction from various formats
 - Making documents AI-readable
 - Converting legacy documents to markdown
 
 **Notes**:
+
 - Requires Python and `uvx` to be installed
 - Uses Microsoft's Markitdown library
 
 ---
 
 ### 3. Gitea Torbonium
+
 **Status**: ✅ Configured  
 **Type**: Git Hosting Integration  
 **Host**: https://gitea.torbonium.com  
 **Command**: `d:\gitea-mcp\gitea-mcp.exe run -t stdio`
 
 **Capabilities**:
+
 - List and manage repositories
 - Create and update issues
 - Manage pull requests
@@ -89,6 +101,7 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Manage repository settings
 
 **Use Cases**:
+
 - Automated issue creation
 - Repository management
 - Code review automation
@@ -96,12 +109,14 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Release management
 
 **Configuration**:
+
 - Token: Configured (ending in ...fcf8)
 - Access: Full API access based on token permissions
 
 ---
 
 ### 4. Gitea LAN (Torbolan)
+
 **Status**: ⚠️ Requires Configuration  
 **Type**: Git Hosting Integration  
 **Host**: https://gitea.torbolan.com  
@@ -110,6 +125,7 @@ You have **8 MCP servers** configured in your environment. These servers extend
 **Issue**: Access token is set to `REPLACE_WITH_NEW_TOKEN`
 
 **Action Required**:
+
 1. Log into https://gitea.torbolan.com
 2. Navigate to Settings → Applications
 3. Generate a new access token
@@ -120,6 +136,7 @@ You have **8 MCP servers** configured in your environment. These servers extend
 ---
 
 ### 5. Gitea Projectium
+
 **Status**: ✅ Configured  
 **Type**: Git Hosting Integration  
 **Host**: https://gitea.projectium.com  
@@ -128,6 +145,7 @@ You have **8 MCP servers** configured in your environment. These servers extend
 **Capabilities**: Same as Gitea Torbonium
 
 **Configuration**:
+
 - Token: Configured (ending in ...9ef)
 - This appears to be the Gitea instance for your current project
 
@@ -136,11 +154,13 @@ You have **8 MCP servers** configured in your environment. These servers extend
 ---
 
 ### 6. Podman/Docker MCP Server
+
 **Status**: ✅ Configured  
 **Type**: Container Management  
 **Command**: `npx -y @modelcontextprotocol/server-docker`
 
 **Capabilities**:
+
 - List running containers
 - Start and stop containers
 - View container logs
@@ -150,6 +170,7 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Create and manage networks
 
 **Use Cases**:
+
 - Container orchestration
 - Development environment management
 - Log analysis
@@ -157,22 +178,26 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Image management
 
 **Configuration**:
+
 - Docker Host: `npipe:////./pipe/docker_engine`
 - Requires: Docker Desktop or Podman running on Windows
 
 **Prerequisites**:
+
 - Docker Desktop must be running
 - Named pipe access configured
 
 ---
 
 ### 7. Filesystem MCP Server
+
 **Status**: ✅ Configured  
 **Type**: File System Access  
 **Path**: `D:\gitea\flyer-crawler.projectium.com\flyer-crawler.projectium.com`  
 **Command**: `npx -y @modelcontextprotocol/server-filesystem`
 
 **Capabilities**:
+
 - List directory contents recursively
 - Read file contents
 - Write and modify files
@@ -181,27 +206,31 @@ You have **8 MCP servers** configured in your environment. These servers extend
 - Create and delete files/directories
 
 **Use Cases**:
+
 - Project file management
 - Bulk file operations
 - Code generation and modifications
 - File content analysis
 - Project structure exploration
 
-**Security Note**: 
+**Security Note**:
 This server has full read/write access to your project directory. It operates within the specified directory only.
 
-**Scope**: 
+**Scope**:
+
 - Limited to: `D:\gitea\flyer-crawler.projectium.com\flyer-crawler.projectium.com`
 - Cannot access files outside this directory
 
 ---
 
 ### 8. Fetch MCP Server
+
 **Status**: ✅ Configured  
 **Type**: HTTP Client  
 **Command**: `npx -y @modelcontextprotocol/server-fetch`
 
 **Capabilities**:
+
 - Send HTTP GET requests
 - Send HTTP POST requests
 - Send PUT, DELETE, PATCH requests
@@ -211,6 +240,7 @@ This server has full read/write access to your project directory. It operates wi
 - Handle authentication
 
 **Use Cases**:
+
 - API testing
 - Web scraping
 - Data fetching from external services
@@ -218,6 +248,7 @@ This server has full read/write access to your project directory. It operates wi
 - Integration with external APIs
 
 **Examples**:
+
 - Fetch data from REST APIs
 - Download web content
 - Test API endpoints
@@ -228,11 +259,12 @@ This server has full read/write access to your project directory. It operates wi
 
 ## Current Status: MCP Server Tool Availability
 
-**Important Note**: While these MCP servers are configured in your environment, they are **not currently exposed as callable tools** in this Claude Code session. 
+**Important Note**: While these MCP servers are configured in your environment, they are **not currently exposed as callable tools** in this Claude Code session.
 
 ### What This Means:
 
 MCP servers typically work by:
+
 1. Running as separate processes
 2. Exposing tools and resources via the Model Context Protocol
 3. Being connected to the AI assistant by the client application (VSCode)
@@ -240,12 +272,14 @@ MCP servers typically work by:
 ### Current Situation:
 
 In the current session, Claude Code has access to:
+
 - ✅ Built-in file operations (read, write, search, list)
 - ✅ Browser actions
 - ✅ Mode switching
 - ✅ Task management tools
 
 But does **NOT** have direct access to:
+
 - ❌ MCP server-specific tools (e.g., Gitea API operations)
 - ❌ Chrome DevTools controls
 - ❌ Markitdown conversion functions
@@ -255,6 +289,7 @@ But does **NOT** have direct access to:
 ### Why This Happens:
 
 MCP servers need to be:
+
 1. Actively connected by the client (VSCode)
 2. Running in the background
 3. Properly registered with the AI assistant
@@ -277,6 +312,7 @@ cd plans
 ```
 
 This will:
+
 - Test each server's basic functionality
 - Check API connectivity for Gitea servers
 - Verify Docker daemon access
@@ -297,6 +333,7 @@ mcp-inspector npx -y @modelcontextprotocol/server-filesystem "D:\gitea\flyer-cra
 ```
 
 The inspector provides a web UI to:
+
 - View available tools
 - Test tool invocations
 - See real-time logs
@@ -343,14 +380,14 @@ Follow the comprehensive guide in [`mcp-server-testing-guide.md`](plans/mcp-serv
 
 ## MCP Server Use Case Matrix
 
-| Server | Code Analysis | Testing | Deployment | Documentation | API Integration |
-|--------|--------------|---------|------------|---------------|-----------------|
-| Chrome DevTools | ✓ (UI testing) | ✓✓✓ | - | ✓ (screenshots) | ✓ |
-| Markitdown | - | - | - | ✓✓✓ | - |
-| Gitea (all 3) | ✓✓✓ | ✓ | ✓✓✓ | ✓✓ | ✓✓✓ |
-| Docker | ✓ | ✓✓✓ | ✓✓✓ | - | ✓ |
-| Filesystem | ✓✓✓ | ✓✓ | ✓ | ✓✓ | ✓ |
-| Fetch | ✓ | ✓✓ | ✓ | - | ✓✓✓ |
+| Server          | Code Analysis  | Testing | Deployment | Documentation   | API Integration |
+| --------------- | -------------- | ------- | ---------- | --------------- | --------------- |
+| Chrome DevTools | ✓ (UI testing) | ✓✓✓     | -          | ✓ (screenshots) | ✓               |
+| Markitdown      | -              | -       | -          | ✓✓✓             | -               |
+| Gitea (all 3)   | ✓✓✓            | ✓       | ✓✓✓        | ✓✓              | ✓✓✓             |
+| Docker          | ✓              | ✓✓✓     | ✓✓✓        | -               | ✓               |
+| Filesystem      | ✓✓✓            | ✓✓      | ✓          | ✓✓              | ✓               |
+| Fetch           | ✓              | ✓✓      | ✓          | -               | ✓✓✓             |
 
 Legend: ✓✓✓ = Primary use case, ✓✓ = Strong use case, ✓ = Applicable, - = Not applicable
 
@@ -359,12 +396,14 @@ Legend: ✓✓✓ = Primary use case, ✓✓ = Strong use case, ✓ = Applicable
 ## Potential Workflows
 
 ### Workflow 1: Automated Documentation Updates
+
 1. **Fetch server**: Get latest API documentation from external service
 2. **Markitdown**: Convert to markdown format
 3. **Filesystem server**: Write to project documentation folder
 4. **Gitea server**: Create commit and push changes
 
 ### Workflow 2: Container-Based Testing
+
 1. **Docker server**: Start test containers
 2. **Fetch server**: Send test API requests
 3. **Docker server**: Collect container logs
@@ -372,6 +411,7 @@ Legend: ✓✓✓ = Primary use case, ✓✓ = Strong use case, ✓ = Applicable
 5. **Gitea server**: Update test status in issues
 
 ### Workflow 3: Web UI Testing
+
 1. **Chrome DevTools**: Launch browser and navigate to app
 2. **Chrome DevTools**: Interact with UI elements
 3. **Chrome DevTools**: Capture screenshots
@@ -379,6 +419,7 @@ Legend: ✓✓✓ = Primary use case, ✓✓ = Strong use case, ✓ = Applicable
 5. **Gitea server**: Update test documentation
 
 ### Workflow 4: Repository Management
+
 1. **Gitea server**: List all repositories
 2. **Gitea server**: Check for outdated dependencies
 3. **Gitea server**: Create issues for updates needed
@@ -389,24 +430,28 @@ Legend: ✓✓✓ = Primary use case, ✓✓ = Strong use case, ✓ = Applicable
 ## Next Steps
 
 ### Phase 1: Verification (Immediate)
+
 1. Run the test script: [`test-mcp-servers.ps1`](plans/test-mcp-servers.ps1:1)
 2. Review results and identify issues
 3. Fix Gitea LAN token configuration
 4. Re-test all servers
 
 ### Phase 2: Documentation (Short-term)
+
 1. Document successful test results
 2. Create usage examples for each server
 3. Set up troubleshooting guides
 4. Document common error scenarios
 
 ### Phase 3: Integration (Medium-term)
+
 1. Verify MCP server connectivity in Claude Code sessions
 2. Test tool availability and functionality
 3. Create workflow templates
 4. Integrate into development processes
 
 ### Phase 4: Optimization (Long-term)
+
 1. Monitor MCP server performance
 2. Optimize configurations
 3. Add additional MCP servers as needed
@@ -419,7 +464,7 @@ Legend: ✓✓✓ = Primary use case, ✓✓ = Strong use case, ✓ = Applicable
 - **MCP Protocol Specification**: https://modelcontextprotocol.io
 - **Testing Guide**: [`mcp-server-testing-guide.md`](plans/mcp-server-testing-guide.md:1)
 - **Test Script**: [`test-mcp-servers.ps1`](plans/test-mcp-servers.ps1:1)
-- **Configuration Files**: 
+- **Configuration Files**:
   - [`mcp.json`](c:/Users/games3/AppData/Roaming/Code/User/mcp.json:1)
   - [`mcp-servers.json`](c:/Users/games3/AppData/Roaming/Code/User/globalStorage/mcp-servers.json:1)
 
@@ -447,6 +492,7 @@ Legend: ✓✓✓ = Primary use case, ✓✓ = Strong use case, ✓ = Applicable
 ## Conclusion
 
 You have a comprehensive MCP server setup that provides powerful capabilities for:
+
 - **Browser automation** (Chrome DevTools)
 - **Document conversion** (Markitdown)
 - **Git hosting integration** (3 Gitea instances)
@@ -454,12 +500,14 @@ You have a comprehensive MCP server setup that provides powerful capabilities fo
 - **File system operations** (Filesystem)
 - **HTTP requests** (Fetch)
 
-**Immediate Action Required**: 
+**Immediate Action Required**:
+
 - Fix the Gitea LAN token configuration
 - Run the test script to verify all servers are operational
 - Review test results and address any failures
 
-**Current Limitation**: 
+**Current Limitation**:
+
 - MCP server tools are not exposed in the current Claude Code session
 - May require VSCode or client-side configuration to enable
 

plans/mcp-server-testing-guide.md

@@ -9,9 +9,11 @@ MCP (Model Context Protocol) servers are standalone processes that expose tools
 ## Testing Prerequisites
 
 1. **MCP Inspector Tool** - Install the official MCP testing tool:
+
    ```bash
    npm install -g @modelcontextprotocol/inspector
    ```
+
    ```powershell
    npm install -g @modelcontextprotocol/inspector
    ```
@@ -25,20 +27,24 @@ MCP (Model Context Protocol) servers are standalone processes that expose tools
 **Purpose**: Browser automation and Chrome DevTools integration
 
 ### Test Command:
+
 ```bash
 npx -y chrome-devtools-mcp@latest --headless true --isolated false --channel stable
 ```
+
 ```powershell
 npx -y chrome-devtools-mcp@latest --headless true --isolated false --channel stable
 ```
 
 ### Expected Capabilities:
+
 - Browser launch and control
 - DOM inspection
 - Network monitoring
 - JavaScript execution in browser context
 
 ### Manual Test Steps:
+
 1. Run the command above
 2. The server should start and output MCP protocol messages
 3. Use MCP Inspector to connect:
@@ -50,6 +56,7 @@ npx -y chrome-devtools-mcp@latest --headless true --isolated false --channel sta
    ```
 
 ### Success Indicators:
+
 - Server starts without errors
 - Lists available tools (e.g., `navigate`, `click`, `screenshot`)
 - Can execute browser actions
@@ -61,20 +68,24 @@ npx -y chrome-devtools-mcp@latest --headless true --isolated false --channel sta
 **Purpose**: Convert various file formats to markdown
 
 ### Test Command:
+
 ```bash
 C:\Users\games3\.local\bin\uvx.exe markitdown-mcp
 ```
+
 ```powershell
 C:\Users\games3\.local\bin\uvx.exe markitdown-mcp
 ```
 
 ### Expected Capabilities:
+
 - Convert PDF to markdown
 - Convert DOCX to markdown
 - Convert HTML to markdown
 - Convert images (OCR) to markdown
 
 ### Manual Test Steps:
+
 1. Ensure `uvx` is installed (Python tool)
 2. Run the command above
 3. Test with MCP Inspector:
@@ -86,11 +97,13 @@ C:\Users\games3\.local\bin\uvx.exe markitdown-mcp
    ```
 
 ### Success Indicators:
+
 - Server initializes successfully
 - Lists conversion tools
 - Can convert a test file
 
 ### Troubleshooting:
+
 - If `uvx` is not found, install it:
   ```bash
   pip install uvx
@@ -111,6 +124,7 @@ You have three Gitea server configurations. All use the same executable but conn
 **Host**: https://gitea.torbonium.com
 
 #### Test Command:
+
 ```powershell
 $env:GITEA_HOST="https://gitea.torbonium.com"
 $env:GITEA_ACCESS_TOKEN="391c9ddbe113378bc87bb8184800ba954648fcf8"
@@ -118,6 +132,7 @@ d:\gitea-mcp\gitea-mcp.exe run -t stdio
 ```
 
 #### Expected Capabilities:
+
 - List repositories
 - Create/update issues
 - Manage pull requests
@@ -125,6 +140,7 @@ d:\gitea-mcp\gitea-mcp.exe run -t stdio
 - Manage branches
 
 #### Manual Test Steps:
+
 1. Set environment variables
 2. Run gitea-mcp.exe
 3. Use MCP Inspector or test direct API access:
@@ -141,6 +157,7 @@ d:\gitea-mcp\gitea-mcp.exe run -t stdio
 **Status**: ⚠️ Token needs replacement
 
 #### Test Command:
+
 ```powershell
 $env:GITEA_HOST="https://gitea.torbolan.com"
 $env:GITEA_ACCESS_TOKEN="REPLACE_WITH_NEW_TOKEN"  # ⚠️ UPDATE THIS
@@ -148,6 +165,7 @@ d:\gitea-mcp\gitea-mcp.exe run -t stdio
 ```
 
 #### Before Testing:
+
 1. Generate a new access token:
    - Log into https://gitea.torbolan.com
    - Go to Settings → Applications → Generate New Token
@@ -158,6 +176,7 @@ d:\gitea-mcp\gitea-mcp.exe run -t stdio
 **Host**: https://gitea.projectium.com
 
 #### Test Command:
+
 ```powershell
 $env:GITEA_HOST="https://gitea.projectium.com"
 $env:GITEA_ACCESS_TOKEN="c72bc0f14f623fec233d3c94b3a16397fe3649ef"
@@ -165,12 +184,14 @@ d:\gitea-mcp\gitea-mcp.exe run -t stdio
 ```
 
 ### Success Indicators for All Gitea Servers:
+
 - Server connects to Gitea instance
 - Lists available repositories
 - Can read repository metadata
 - Authentication succeeds
 
 ### Troubleshooting:
+
 - **401 Unauthorized**: Token is invalid or expired
 - **Connection refused**: Check if Gitea instance is accessible
 - **SSL errors**: Verify HTTPS certificate validity
@@ -182,12 +203,14 @@ d:\gitea-mcp\gitea-mcp.exe run -t stdio
 **Purpose**: Container management and Docker operations
 
 ### Test Command:
+
 ```powershell
 $env:DOCKER_HOST="npipe:////./pipe/docker_engine"
 npx -y @modelcontextprotocol/server-docker
 ```
 
 ### Expected Capabilities:
+
 - List containers
 - Start/stop containers
 - View container logs
@@ -195,6 +218,7 @@ npx -y @modelcontextprotocol/server-docker
 - Manage images
 
 ### Manual Test Steps:
+
 1. Ensure Docker Desktop or Podman is running
 2. Verify named pipe exists: `npipe:////./pipe/docker_engine`
 3. Run the server command
@@ -207,17 +231,20 @@ npx -y @modelcontextprotocol/server-docker
    ```
 
 ### Verify Docker Access Directly:
+
 ```powershell
 docker ps
 docker images
 ```
 
 ### Success Indicators:
+
 - Server connects to Docker daemon
 - Can list containers and images
 - Can execute container operations
 
 ### Troubleshooting:
+
 - **Cannot connect to Docker daemon**: Ensure Docker Desktop is running
 - **Named pipe error**: Check DOCKER_HOST configuration
 - **Permission denied**: Run as administrator
@@ -229,14 +256,17 @@ docker images
 **Purpose**: Access and manipulate files in specified directory
 
 ### Test Command:
+
 ```bash
 npx -y @modelcontextprotocol/server-filesystem "D:\gitea\flyer-crawler.projectium.com\flyer-crawler.projectium.com"
 ```
+
 ```powershell
 npx -y @modelcontextprotocol/server-filesystem "D:\gitea\flyer-crawler.projectium.com\flyer-crawler.projectium.com"
 ```
 
 ### Expected Capabilities:
+
 - List directory contents
 - Read files
 - Write files
@@ -244,6 +274,7 @@ npx -y @modelcontextprotocol/server-filesystem "D:\gitea\flyer-crawler.projectiu
 - Get file metadata
 
 ### Manual Test Steps:
+
 1. Run the command above
 2. Use MCP Inspector:
    ```bash
@@ -255,18 +286,21 @@ npx -y @modelcontextprotocol/server-filesystem "D:\gitea\flyer-crawler.projectiu
 3. Test listing directory contents
 
 ### Verify Directory Access:
+
 ```powershell
 Test-Path "D:\gitea\flyer-crawler.projectium.com\flyer-crawler.projectium.com"
 Get-ChildItem "D:\gitea\flyer-crawler.projectium.com\flyer-crawler.projectium.com" | Select-Object -First 5
 ```
 
 ### Success Indicators:
+
 - Server starts successfully
 - Can list directory contents
 - Can read file contents
 - Write operations work (if permissions allow)
 
 ### Security Note:
+
 This server has access to your entire project directory. Ensure it's only used in trusted contexts.
 
 ---
@@ -276,14 +310,17 @@ This server has access to your entire project directory. Ensure it's only used i
 **Purpose**: Make HTTP requests to external APIs and websites
 
 ### Test Command:
+
 ```bash
 npx -y @modelcontextprotocol/server-fetch
 ```
+
 ```powershell
 npx -y @modelcontextprotocol/server-fetch
 ```
 
 ### Expected Capabilities:
+
 - HTTP GET requests
 - HTTP POST requests
 - Handle JSON/text responses
@@ -291,6 +328,7 @@ npx -y @modelcontextprotocol/server-fetch
 - Follow redirects
 
 ### Manual Test Steps:
+
 1. Run the server command
 2. Use MCP Inspector:
    ```bash
@@ -302,9 +340,11 @@ npx -y @modelcontextprotocol/server-fetch
 3. Test fetching a URL through the inspector
 
 ### Test Fetch Capability Directly:
+
 ```bash
 curl https://api.github.com/users/github
 ```
+
 ```powershell
 # Test if curl/web requests work
 curl https://api.github.com/users/github
@@ -313,6 +353,7 @@ Invoke-RestMethod -Uri "https://api.github.com/users/github"
 ```
 
 ### Success Indicators:
+
 - Server initializes
 - Can fetch URLs
 - Returns proper HTTP responses
@@ -414,6 +455,7 @@ npm install -g @modelcontextprotocol/inspector
 # Test any server
 mcp-inspector <command> <args>
 ```
+
 ```powershell
 # Install globally
 npm install -g @modelcontextprotocol/inspector
@@ -434,6 +476,7 @@ mcp-inspector npx -y @modelcontextprotocol/server-filesystem "D:\gitea\flyer-cra
 # Test Docker server
 mcp-inspector npx -y @modelcontextprotocol/server-docker
 ```
+
 ```powershell
 # Test fetch server
 mcp-inspector npx -y @modelcontextprotocol/server-fetch
@@ -450,19 +493,25 @@ mcp-inspector npx -y @modelcontextprotocol/server-docker
 ## Common Issues and Solutions
 
 ### Issue: "Cannot find module" or "Command not found"
+
 **Solution**: Ensure Node.js and npm are installed and in PATH
 
 ### Issue: MCP server starts but doesn't respond
+
 **Solution**: Check server logs, verify stdio communication, ensure no JSON parsing errors
 
 ### Issue: Authentication failures with Gitea
-**Solution**: 
+
+**Solution**:
+
 1. Verify tokens haven't expired
 2. Check token permissions in Gitea settings
 3. Ensure network access to Gitea instances
 
 ### Issue: Docker server cannot connect
+
 **Solution**:
+
 1. Start Docker Desktop
 2. Verify DOCKER_HOST environment variable
 3. Check Windows named pipe permissions
@@ -472,6 +521,7 @@ mcp-inspector npx -y @modelcontextprotocol/server-docker
 ## Next Steps
 
 After testing:
+
 1. Document which servers are working
 2. Fix any configuration issues
 3. Update tokens as needed

plans/podman-mcp-test-results.md

@@ -6,6 +6,7 @@
 ## Configuration Summary
 
 ### MCP Configuration File
+
 **Location**: `c:/Users/games3/AppData/Roaming/Code/User/mcp.json`
 
 ```json
@@ -19,6 +20,7 @@
 ```
 
 ### Key Configuration Details
+
 - **Package**: `docker-mcp` (community MCP server with SSH support)
 - **Connection Method**: SSH to Podman machine
 - **SSH Endpoint**: `root@127.0.0.1:2972`
@@ -27,12 +29,14 @@
 ## Podman System Status
 
 ### Podman Machine
+
 ```
 NAME                    VM TYPE     CREATED      CPUS        MEMORY      DISK SIZE
 podman-machine-default  wsl         4 weeks ago  4           2GiB        100GiB
 ```
 
 ### Connection Information
+
 ```
 Name:     podman-machine-default-root
 URI:      ssh://root@127.0.0.1:2972/run/podman/podman.sock
@@ -40,7 +44,9 @@ Default:  true
 ```
 
 ### Container Status
+
 Podman is operational with 3 containers:
+
 - `flyer-dev` (Ubuntu) - Exited
 - `flyer-crawler-redis` (Redis) - Exited
 - `flyer-crawler-postgres` (PostGIS) - Exited
@@ -48,11 +54,13 @@ Podman is operational with 3 containers:
 ## Test Results
 
 ### Command Line Tests
+
 ✅ **Podman CLI**: Working - `podman ps` returns successfully
 ✅ **Container Management**: Working - Can list and manage containers
 ✅ **Socket Connection**: Working - SSH connection to Podman machine functional
 
 ### MCP Server Integration Tests
+
 ✅ **Configuration File**: Updated and valid JSON
 ✅ **VSCode Restart**: Completed to load new MCP configuration
 ✅ **Package Selection**: Using `docker-mcp` (supports SSH connections)
@@ -85,16 +93,19 @@ Once the MCP server is fully loaded, the following tools should be available:
 ### If MCP Server Doesn't Connect
 
 1. **Verify Podman is running**:
+
    ```bash
    podman ps
    ```
 
 2. **Check SSH connection**:
+
    ```bash
    podman system connection list
    ```
 
 3. **Test docker-mcp package manually**:
+
    ```powershell
    $env:DOCKER_HOST="ssh://root@127.0.0.1:2972/run/podman/podman.sock"
    npx -y docker-mcp

scripts/clean.mjs

@@ -0,0 +1,70 @@
+#!/usr/bin/env node
+/**
+ * Clean script to remove coverage directories.
+ * Replaces rimraf dependency with native Node.js fs.rm API.
+ *
+ * Usage: node scripts/clean.mjs
+ *
+ * Behavior matches rimraf: errors are logged but script exits successfully.
+ * This allows build pipelines to continue even if directories don't exist.
+ */
+
+import { rm } from 'node:fs/promises';
+import { resolve } from 'node:path';
+
+/**
+ * Directories to clean, relative to project root.
+ * Add additional directories here as needed.
+ */
+const DIRECTORIES_TO_CLEAN = ['coverage', '.coverage'];
+
+/**
+ * Removes a directory recursively, handling errors gracefully.
+ *
+ * @param {string} dirPath - Absolute path to the directory to remove
+ * @returns {Promise<boolean>} - True if removed successfully, false if error occurred
+ */
+async function removeDirectory(dirPath) {
+  try {
+    await rm(dirPath, { recursive: true, force: true });
+    console.log(`Removed: ${dirPath}`);
+    return true;
+  } catch (error) {
+    // Log error but don't fail - matches rimraf behavior
+    // force: true should handle ENOENT, but log other errors
+    console.error(`Warning: Could not remove ${dirPath}: ${error.message}`);
+    return false;
+  }
+}
+
+/**
+ * Main entry point. Cleans all configured directories.
+ */
+async function main() {
+  // Get project root (parent of scripts directory)
+  const projectRoot = resolve(import.meta.dirname, '..');
+
+  console.log('Cleaning coverage directories...');
+
+  const results = await Promise.all(
+    DIRECTORIES_TO_CLEAN.map((dir) => {
+      const absolutePath = resolve(projectRoot, dir);
+      return removeDirectory(absolutePath);
+    }),
+  );
+
+  const successCount = results.filter(Boolean).length;
+  console.log(
+    `Clean complete: ${successCount}/${DIRECTORIES_TO_CLEAN.length} directories processed.`,
+  );
+
+  // Always exit successfully (matches rimraf behavior)
+  process.exit(0);
+}
+
+main().catch((error) => {
+  // Catch any unexpected errors in main
+  console.error('Unexpected error during clean:', error.message);
+  // Still exit successfully to not break build pipelines
+  process.exit(0);
+});

server.ts

@@ -25,9 +25,12 @@ import { backgroundJobService, startBackgroundJobs } from './src/services/backgr
 import { websocketService } from './src/services/websocketService.server';
 import type { UserProfile } from './src/types';
 
-// API Documentation (ADR-018)
+// API Documentation (ADR-018) - tsoa-generated OpenAPI spec
 import swaggerUi from 'swagger-ui-express';
-import { swaggerSpec } from './src/config/swagger';
+import tsoaSpec from './src/config/tsoa-spec.json' with { type: 'json' };
+
+// tsoa-generated routes
+import { RegisterRoutes } from './src/routes/tsoa-generated';
 import {
   analyticsQueue,
   weeklyAnalyticsQueue,
@@ -197,11 +200,13 @@ if (!process.env.JWT_SECRET) {
 
 // --- API Documentation (ADR-018) ---
 // Only serve Swagger UI in non-production environments to prevent information disclosure.
+// Uses tsoa-generated OpenAPI specification.
 if (process.env.NODE_ENV !== 'production') {
+  // Serve tsoa-generated OpenAPI documentation
   app.use(
     '/docs/api-docs',
     swaggerUi.serve,
-    swaggerUi.setup(swaggerSpec, {
+    swaggerUi.setup(tsoaSpec, {
       customCss: '.swagger-ui .topbar { display: none }',
       customSiteTitle: 'Flyer Crawler API Documentation',
     }),
@@ -210,7 +215,7 @@ if (process.env.NODE_ENV !== 'production') {
   // Expose raw OpenAPI JSON spec for tooling (SDK generation, testing, etc.)
   app.get('/docs/api-docs.json', (_req, res) => {
     res.setHeader('Content-Type', 'application/json');
-    res.send(swaggerSpec);
+    res.send(tsoaSpec);
   });
 
   logger.info('API Documentation available at /docs/api-docs');
@@ -230,12 +235,27 @@ app.get('/api/v1/health/queues', async (req, res) => {
   }
 });
 
+// --- tsoa-generated Routes ---
+// Register routes generated by tsoa from controllers.
+// These routes run in parallel with existing routes during migration.
+// tsoa routes are mounted directly on the app (basePath in tsoa.json is '/api').
+// The RegisterRoutes function adds routes at /api/health/*, /api/_tsoa/*, etc.
+//
+// IMPORTANT: tsoa routes are registered BEFORE the backwards compatibility redirect
+// middleware so that tsoa routes (like /api/health/ping, /api/_tsoa/verify) are
+// matched directly without being redirected to /api/v1/*.
+// During migration, both tsoa routes and versioned routes coexist:
+// - /api/health/ping -> handled by tsoa HealthController
+// - /api/v1/health/ping -> handled by versioned health.routes.ts
+// As controllers are migrated, the versioned routes will be removed.
+RegisterRoutes(app);
+
 // --- Backwards Compatibility Redirect (ADR-008: API Versioning Strategy) ---
 // Redirect old /api/* paths to /api/v1/* for backwards compatibility.
 // This allows clients to gradually migrate to the versioned API.
-// IMPORTANT: This middleware MUST be mounted BEFORE createApiRouter() so that
-// unversioned paths like /api/users are redirected to /api/v1/users BEFORE
-// the versioned router's detectApiVersion middleware rejects them as invalid versions.
+// IMPORTANT: This middleware MUST be mounted:
+// - AFTER tsoa routes (so tsoa routes are matched directly)
+// - BEFORE createApiRouter() (so unversioned paths are redirected to /api/v1/*)
 app.use('/api', (req, res, next) => {
   // Check if the path starts with a version-like prefix (/v followed by digits).
   // This includes both supported versions (v1, v2) and unsupported ones (v99).

src/components/StatCard.test.tsx

@@ -9,11 +9,7 @@ import '@testing-library/jest-dom';
 describe('StatCard', () => {
   it('renders title and value correctly', () => {
     renderWithProviders(
-      <StatCard
-        title="Total Users"
-        value="1,234"
-        icon={<div data-testid="mock-icon">Icon</div>}
-      />,
+      <StatCard title="Total Users" value="1,234" icon={<div data-testid="mock-icon">Icon</div>} />,
     );
 
     expect(screen.getByText('Total Users')).toBeInTheDocument();
@@ -22,13 +18,9 @@ describe('StatCard', () => {
 
   it('renders the icon', () => {
     renderWithProviders(
-      <StatCard
-        title="Total Users"
-        value="1,234"
-        icon={<div data-testid="mock-icon">Icon</div>}
-      />,
+      <StatCard title="Total Users" value="1,234" icon={<div data-testid="mock-icon">Icon</div>} />,
     );
 
     expect(screen.getByTestId('mock-icon')).toBeInTheDocument();
   });
-});
+});

src/config/rateLimiters.ts

@@ -144,4 +144,4 @@ export const batchLimiter = rateLimit({
   message: 'Too many batch requests from this IP, please try again later.',
 });
 
-export const budgetUpdateLimiter = batchLimiter; // Alias
+export const budgetUpdateLimiter = batchLimiter; // Alias

src/config/swagger.test.ts

@@ -1,6 +1,12 @@
 // src/config/swagger.test.ts
+/**
+ * Tests for tsoa-generated OpenAPI specification.
+ *
+ * These tests verify the tsoa specification structure and content
+ * as generated from controllers decorated with tsoa decorators.
+ */
 import { describe, it, expect } from 'vitest';
-import { swaggerSpec } from './swagger';
+import tsoaSpec from './tsoa-spec.json';
 
 // Type definition for OpenAPI 3.0 spec structure used in tests
 interface OpenAPISpec {
@@ -10,18 +16,11 @@ interface OpenAPISpec {
     version: string;
     description?: string;
     contact?: { name: string };
-    license?: { name: string };
+    license?: { name: string | { name: string } };
   };
   servers: Array<{ url: string; description?: string }>;
   components: {
-    securitySchemes?: {
-      bearerAuth?: {
-        type: string;
-        scheme: string;
-        bearerFormat?: string;
-        description?: string;
-      };
-    };
+    securitySchemes?: Record<string, unknown>;
     schemas?: Record<string, unknown>;
   };
   tags: Array<{ name: string; description?: string }>;
@@ -29,19 +28,13 @@ interface OpenAPISpec {
 }
 
 // Cast to typed spec for property access
-const spec = swaggerSpec as OpenAPISpec;
+const spec = tsoaSpec as unknown as OpenAPISpec;
 
-/**
- * Tests for src/config/swagger.ts - OpenAPI/Swagger configuration.
- *
- * These tests verify the swagger specification structure and content
- * without testing the swagger-jsdoc library itself.
- */
-describe('swagger configuration', () => {
-  describe('swaggerSpec export', () => {
+describe('tsoa OpenAPI specification', () => {
+  describe('spec export', () => {
     it('should export a swagger specification object', () => {
-      expect(swaggerSpec).toBeDefined();
-      expect(typeof swaggerSpec).toBe('object');
+      expect(tsoaSpec).toBeDefined();
+      expect(typeof tsoaSpec).toBe('object');
     });
 
     it('should have openapi version 3.0.0', () => {
@@ -63,12 +56,11 @@ describe('swagger configuration', () => {
 
     it('should have contact information', () => {
       expect(spec.info.contact).toBeDefined();
-      expect(spec.info.contact?.name).toBe('API Support');
+      expect(spec.info.contact?.name).toBeDefined();
     });
 
     it('should have license information', () => {
       expect(spec.info.license).toBeDefined();
-      expect(spec.info.license?.name).toBe('Private');
     });
   });
 
@@ -79,10 +71,9 @@ describe('swagger configuration', () => {
       expect(spec.servers.length).toBeGreaterThan(0);
     });
 
-    it('should have /api/v1 as the server URL (ADR-008)', () => {
-      const apiServer = spec.servers.find((s) => s.url === '/api/v1');
+    it('should have /api as the server URL (tsoa basePath)', () => {
+      const apiServer = spec.servers.find((s) => s.url === '/api');
       expect(apiServer).toBeDefined();
-      expect(apiServer?.description).toBe('API server (v1)');
     });
   });
 
@@ -91,96 +82,42 @@ describe('swagger configuration', () => {
       expect(spec.components).toBeDefined();
     });
 
-    describe('securitySchemes', () => {
-      it('should have bearerAuth security scheme', () => {
-        expect(spec.components.securitySchemes).toBeDefined();
-        expect(spec.components.securitySchemes?.bearerAuth).toBeDefined();
-      });
-
-      it('should configure bearerAuth as HTTP bearer with JWT format', () => {
-        const bearerAuth = spec.components.securitySchemes?.bearerAuth;
-        expect(bearerAuth?.type).toBe('http');
-        expect(bearerAuth?.scheme).toBe('bearer');
-        expect(bearerAuth?.bearerFormat).toBe('JWT');
-      });
-
-      it('should have description for bearerAuth', () => {
-        const bearerAuth = spec.components.securitySchemes?.bearerAuth;
-        expect(bearerAuth?.description).toContain('JWT token');
-      });
-    });
-
     describe('schemas', () => {
-      const schemas = () => spec.components.schemas as Record<string, any>;
+      const schemas = () => spec.components.schemas as Record<string, unknown>;
 
       it('should have schemas object', () => {
         expect(spec.components.schemas).toBeDefined();
       });
 
-      it('should have SuccessResponse schema (ADR-028)', () => {
-        const schema = schemas().SuccessResponse;
+      it('should have PaginationMeta schema (ADR-028)', () => {
+        const schema = schemas().PaginationMeta as Record<string, unknown>;
         expect(schema).toBeDefined();
         expect(schema.type).toBe('object');
-        expect(schema.properties.success).toBeDefined();
-        expect(schema.properties.data).toBeDefined();
-        expect(schema.required).toContain('success');
-        expect(schema.required).toContain('data');
+        const properties = schema.properties as Record<string, unknown>;
+        expect(properties.page).toBeDefined();
+        expect(properties.limit).toBeDefined();
+        expect(properties.total).toBeDefined();
+        expect(properties.totalPages).toBeDefined();
+        expect(properties.hasNextPage).toBeDefined();
+        expect(properties.hasPrevPage).toBeDefined();
       });
 
-      it('should have ErrorResponse schema (ADR-028)', () => {
-        const schema = schemas().ErrorResponse;
+      it('should have ResponseMeta schema', () => {
+        const schema = schemas().ResponseMeta as Record<string, unknown>;
         expect(schema).toBeDefined();
         expect(schema.type).toBe('object');
-        expect(schema.properties.success).toBeDefined();
-        expect(schema.properties.error).toBeDefined();
-        expect(schema.required).toContain('success');
-        expect(schema.required).toContain('error');
+        const properties = schema.properties as Record<string, unknown>;
+        expect(properties.requestId).toBeDefined();
+        expect(properties.timestamp).toBeDefined();
       });
 
-      it('should have ErrorResponse error object with code and message', () => {
-        const errorSchema = schemas().ErrorResponse.properties.error;
-        expect(errorSchema.properties.code).toBeDefined();
-        expect(errorSchema.properties.message).toBeDefined();
-        expect(errorSchema.required).toContain('code');
-        expect(errorSchema.required).toContain('message');
-      });
-
-      it('should have ServiceHealth schema', () => {
-        const schema = schemas().ServiceHealth;
+      it('should have ErrorDetails schema for error responses (ADR-028)', () => {
+        const schema = schemas().ErrorDetails as Record<string, unknown>;
         expect(schema).toBeDefined();
         expect(schema.type).toBe('object');
-        expect(schema.properties.status).toBeDefined();
-        expect(schema.properties.status.enum).toContain('healthy');
-        expect(schema.properties.status.enum).toContain('degraded');
-        expect(schema.properties.status.enum).toContain('unhealthy');
-      });
-
-      it('should have Achievement schema', () => {
-        const schema = schemas().Achievement;
-        expect(schema).toBeDefined();
-        expect(schema.type).toBe('object');
-        expect(schema.properties.achievement_id).toBeDefined();
-        expect(schema.properties.name).toBeDefined();
-        expect(schema.properties.description).toBeDefined();
-        expect(schema.properties.icon).toBeDefined();
-        expect(schema.properties.points_value).toBeDefined();
-      });
-
-      it('should have UserAchievement schema extending Achievement', () => {
-        const schema = schemas().UserAchievement;
-        expect(schema).toBeDefined();
-        expect(schema.allOf).toBeDefined();
-        expect(schema.allOf[0].$ref).toBe('#/components/schemas/Achievement');
-      });
-
-      it('should have LeaderboardUser schema', () => {
-        const schema = schemas().LeaderboardUser;
-        expect(schema).toBeDefined();
-        expect(schema.type).toBe('object');
-        expect(schema.properties.user_id).toBeDefined();
-        expect(schema.properties.full_name).toBeDefined();
-        expect(schema.properties.points).toBeDefined();
-        expect(schema.properties.rank).toBeDefined();
+        const properties = schema.properties as Record<string, unknown>;
+        expect(properties.code).toBeDefined();
+        expect(properties.message).toBeDefined();
       });
     });
   });
@@ -194,7 +131,7 @@ describe('swagger configuration', () => {
     it('should have Health tag', () => {
       const tag = spec.tags.find((t) => t.name === 'Health');
       expect(tag).toBeDefined();
-      expect(tag?.description).toContain('health');
+      expect(tag?.description).toContain('Health');
     });
 
     it('should have Auth tag', () => {
@@ -206,13 +143,6 @@ describe('swagger configuration', () => {
     it('should have Users tag', () => {
       const tag = spec.tags.find((t) => t.name === 'Users');
       expect(tag).toBeDefined();
-      expect(tag?.description).toContain('User');
-    });
-
-    it('should have Achievements tag', () => {
-      const tag = spec.tags.find((t) => t.name === 'Achievements');
-      expect(tag).toBeDefined();
-      expect(tag?.description).toContain('Gamification');
     });
 
     it('should have Flyers tag', () => {
@@ -220,45 +150,37 @@ describe('swagger configuration', () => {
       expect(tag).toBeDefined();
     });
 
-    it('should have Recipes tag', () => {
-      const tag = spec.tags.find((t) => t.name === 'Recipes');
+    it('should have Deals tag', () => {
+      const tag = spec.tags.find((t) => t.name === 'Deals');
       expect(tag).toBeDefined();
     });
 
-    it('should have Budgets tag', () => {
-      const tag = spec.tags.find((t) => t.name === 'Budgets');
+    it('should have Stores tag', () => {
+      const tag = spec.tags.find((t) => t.name === 'Stores');
       expect(tag).toBeDefined();
     });
+  });
 
-    it('should have Admin tag', () => {
-      const tag = spec.tags.find((t) => t.name === 'Admin');
-      expect(tag).toBeDefined();
-      expect(tag?.description).toContain('admin');
+  describe('paths section', () => {
+    it('should have paths object with endpoints', () => {
+      expect(spec.paths).toBeDefined();
+      expect(typeof spec.paths).toBe('object');
+      expect(Object.keys(spec.paths as object).length).toBeGreaterThan(0);
     });
 
-    it('should have System tag', () => {
-      const tag = spec.tags.find((t) => t.name === 'System');
-      expect(tag).toBeDefined();
-    });
-
-    it('should have 9 tags total', () => {
-      expect(spec.tags.length).toBe(9);
+    it('should have health ping endpoint', () => {
+      const paths = spec.paths as Record<string, unknown>;
+      expect(paths['/health/ping']).toBeDefined();
     });
   });
 
   describe('specification validity', () => {
-    it('should have paths object (may be empty if no JSDoc annotations parsed)', () => {
-      // swagger-jsdoc creates paths from JSDoc annotations in route files
-      // In test environment, this may be empty if routes aren't scanned
-      expect(swaggerSpec).toHaveProperty('paths');
-    });
-
     it('should be a valid JSON-serializable object', () => {
-      expect(() => JSON.stringify(swaggerSpec)).not.toThrow();
+      expect(() => JSON.stringify(tsoaSpec)).not.toThrow();
     });
 
     it('should produce valid JSON output', () => {
-      const json = JSON.stringify(swaggerSpec);
+      const json = JSON.stringify(tsoaSpec);
       expect(() => JSON.parse(json)).not.toThrow();
     });
   });

src/config/swagger.ts

@@ -1,228 +0,0 @@
-// src/config/swagger.ts
-/**
- * @file OpenAPI/Swagger configuration for API documentation.
- * Implements ADR-018: API Documentation Strategy.
- *
- * This file configures swagger-jsdoc to generate an OpenAPI 3.0 specification
- * from JSDoc annotations in route files. The specification is used by
- * swagger-ui-express to serve interactive API documentation.
- */
-import swaggerJsdoc from 'swagger-jsdoc';
-
-const options: swaggerJsdoc.Options = {
-  definition: {
-    openapi: '3.0.0',
-    info: {
-      title: 'Flyer Crawler API',
-      version: '1.0.0',
-      description:
-        'API for the Flyer Crawler application - a platform for discovering grocery deals, managing recipes, and tracking budgets.',
-      contact: {
-        name: 'API Support',
-      },
-      license: {
-        name: 'Private',
-      },
-    },
-    servers: [
-      {
-        url: '/api/v1',
-        description: 'API server (v1)',
-      },
-    ],
-    components: {
-      securitySchemes: {
-        bearerAuth: {
-          type: 'http',
-          scheme: 'bearer',
-          bearerFormat: 'JWT',
-          description: 'JWT token obtained from /auth/login or /auth/register',
-        },
-      },
-      schemas: {
-        // Standard success response wrapper (ADR-028)
-        SuccessResponse: {
-          type: 'object',
-          properties: {
-            success: {
-              type: 'boolean',
-              example: true,
-            },
-            data: {
-              type: 'object',
-              description: 'Response payload - structure varies by endpoint',
-            },
-          },
-          required: ['success', 'data'],
-        },
-        // Standard error response wrapper (ADR-028)
-        ErrorResponse: {
-          type: 'object',
-          properties: {
-            success: {
-              type: 'boolean',
-              example: false,
-            },
-            error: {
-              type: 'object',
-              properties: {
-                code: {
-                  type: 'string',
-                  description: 'Machine-readable error code',
-                  example: 'VALIDATION_ERROR',
-                },
-                message: {
-                  type: 'string',
-                  description: 'Human-readable error message',
-                  example: 'Invalid request parameters',
-                },
-              },
-              required: ['code', 'message'],
-            },
-          },
-          required: ['success', 'error'],
-        },
-        // Common service health status
-        ServiceHealth: {
-          type: 'object',
-          properties: {
-            status: {
-              type: 'string',
-              enum: ['healthy', 'degraded', 'unhealthy'],
-            },
-            latency: {
-              type: 'number',
-              description: 'Response time in milliseconds',
-            },
-            message: {
-              type: 'string',
-              description: 'Additional status information',
-            },
-            details: {
-              type: 'object',
-              description: 'Service-specific details',
-            },
-          },
-          required: ['status'],
-        },
-        // Achievement schema
-        Achievement: {
-          type: 'object',
-          properties: {
-            achievement_id: {
-              type: 'integer',
-              example: 1,
-            },
-            name: {
-              type: 'string',
-              example: 'First-Upload',
-            },
-            description: {
-              type: 'string',
-              example: 'Upload your first flyer',
-            },
-            icon: {
-              type: 'string',
-              example: 'upload-cloud',
-            },
-            points_value: {
-              type: 'integer',
-              example: 25,
-            },
-            created_at: {
-              type: 'string',
-              format: 'date-time',
-            },
-          },
-        },
-        // User achievement (with achieved_at)
-        UserAchievement: {
-          allOf: [
-            { $ref: '#/components/schemas/Achievement' },
-            {
-              type: 'object',
-              properties: {
-                user_id: {
-                  type: 'string',
-                  format: 'uuid',
-                },
-                achieved_at: {
-                  type: 'string',
-                  format: 'date-time',
-                },
-              },
-            },
-          ],
-        },
-        // Leaderboard entry
-        LeaderboardUser: {
-          type: 'object',
-          properties: {
-            user_id: {
-              type: 'string',
-              format: 'uuid',
-            },
-            full_name: {
-              type: 'string',
-              example: 'John Doe',
-            },
-            avatar_url: {
-              type: 'string',
-              nullable: true,
-            },
-            points: {
-              type: 'integer',
-              example: 150,
-            },
-            rank: {
-              type: 'integer',
-              example: 1,
-            },
-          },
-        },
-      },
-    },
-    tags: [
-      {
-        name: 'Health',
-        description: 'Server health and readiness checks',
-      },
-      {
-        name: 'Auth',
-        description: 'Authentication and authorization',
-      },
-      {
-        name: 'Users',
-        description: 'User profile management',
-      },
-      {
-        name: 'Achievements',
-        description: 'Gamification and leaderboards',
-      },
-      {
-        name: 'Flyers',
-        description: 'Flyer uploads and retrieval',
-      },
-      {
-        name: 'Recipes',
-        description: 'Recipe management',
-      },
-      {
-        name: 'Budgets',
-        description: 'Budget tracking and analysis',
-      },
-      {
-        name: 'Admin',
-        description: 'Administrative operations (requires admin role)',
-      },
-      {
-        name: 'System',
-        description: 'System status and monitoring',
-      },
-    ],
-  },
-  // Path to the API routes files with JSDoc annotations
-  apis: ['./src/routes/*.ts'],
-};
-
-export const swaggerSpec = swaggerJsdoc(options);

src/controllers/README.md

@@ -0,0 +1,420 @@
+# tsoa Controller Standards
+
+This document defines the coding standards and patterns for implementing tsoa controllers in the Flyer Crawler API.
+
+## Overview
+
+Controllers are the API layer that handles HTTP requests and responses. They use [tsoa](https://tsoa-community.github.io/docs/) decorators to define routes and generate OpenAPI specifications automatically.
+
+**Key Principles:**
+
+- Controllers handle HTTP concerns (parsing requests, formatting responses)
+- Business logic belongs in the service layer
+- All controllers extend `BaseController` for consistent response formatting
+- Response formats follow ADR-028 (API Response Standards)
+
+## Quick Start
+
+```typescript
+import { Route, Get, Post, Tags, Body, Path, Query, Security, Request } from 'tsoa';
+import {
+  BaseController,
+  SuccessResponse,
+  PaginatedResponse,
+  RequestContext,
+} from './base.controller';
+import { userService } from '../services/userService';
+import type { User, CreateUserRequest } from '../types';
+
+@Route('users')
+@Tags('Users')
+export class UsersController extends BaseController {
+  /**
+   * Get a user by ID.
+   * @param id The user's unique identifier
+   */
+  @Get('{id}')
+  @Security('jwt')
+  public async getUser(
+    @Path() id: string,
+    @Request() ctx: RequestContext,
+  ): Promise<SuccessResponse<User>> {
+    ctx.logger.info({ userId: id }, 'Fetching user');
+    const user = await userService.getUserById(id, ctx.logger);
+    return this.success(user);
+  }
+
+  /**
+   * List all users with pagination.
+   */
+  @Get()
+  @Security('jwt', ['admin'])
+  public async listUsers(
+    @Query() page?: number,
+    @Query() limit?: number,
+    @Request() ctx?: RequestContext,
+  ): Promise<PaginatedResponse<User>> {
+    const { page: p, limit: l } = this.normalizePagination(page, limit);
+    const { users, total } = await userService.listUsers({ page: p, limit: l }, ctx?.logger);
+    return this.paginated(users, { page: p, limit: l, total });
+  }
+
+  /**
+   * Create a new user.
+   */
+  @Post()
+  @Security('jwt', ['admin'])
+  public async createUser(
+    @Body() body: CreateUserRequest,
+    @Request() ctx: RequestContext,
+  ): Promise<SuccessResponse<User>> {
+    const user = await userService.createUser(body, ctx.logger);
+    return this.created(user);
+  }
+}
+```
+
+## File Structure
+
+```
+src/controllers/
+├── base.controller.ts    # Base class with response helpers
+├── types.ts              # Shared types for controllers
+├── README.md             # This file
+├── health.controller.ts  # Health check endpoints
+├── auth.controller.ts    # Authentication endpoints
+├── users.controller.ts   # User management endpoints
+└── ...
+```
+
+## Response Format
+
+All responses follow ADR-028:
+
+### Success Response
+
+```typescript
+interface SuccessResponse<T> {
+  success: true;
+  data: T;
+  meta?: {
+    requestId?: string;
+    timestamp?: string;
+    pagination?: PaginationMeta;
+  };
+}
+```
+
+### Error Response
+
+```typescript
+interface ErrorResponse {
+  success: false;
+  error: {
+    code: string; // e.g., 'NOT_FOUND', 'VALIDATION_ERROR'
+    message: string; // Human-readable message
+    details?: unknown; // Additional error details
+  };
+  meta?: {
+    requestId?: string;
+    timestamp?: string;
+  };
+}
+```
+
+### Paginated Response
+
+```typescript
+interface PaginatedResponse<T> {
+  success: true;
+  data: T[];
+  meta: {
+    pagination: {
+      page: number;
+      limit: number;
+      total: number;
+      totalPages: number;
+      hasNextPage: boolean;
+      hasPrevPage: boolean;
+    };
+  };
+}
+```
+
+## BaseController Methods
+
+### Response Helpers
+
+| Method                               | Description                 | HTTP Status |
+| ------------------------------------ | --------------------------- | ----------- |
+| `success(data, meta?)`               | Standard success response   | 200         |
+| `created(data, meta?)`               | Resource created            | 201         |
+| `noContent()`                        | Success with no body        | 204         |
+| `paginated(data, pagination, meta?)` | Paginated list response     | 200         |
+| `message(msg)`                       | Success with just a message | 200         |
+
+### Pagination Helpers
+
+| Method                               | Description                                           |
+| ------------------------------------ | ----------------------------------------------------- |
+| `normalizePagination(page?, limit?)` | Apply defaults and bounds (page=1, limit=20, max=100) |
+| `calculatePagination(input)`         | Calculate totalPages, hasNextPage, etc.               |
+
+### Error Handling
+
+Controllers should throw typed errors rather than constructing error responses manually:
+
+```typescript
+import { NotFoundError, ForbiddenError, ValidationError } from './base.controller';
+
+// Throw when resource not found
+throw new NotFoundError('User not found');
+
+// Throw when access denied
+throw new ForbiddenError('Cannot access this resource');
+
+// Throw for validation errors (from Zod)
+throw new ValidationError(zodError.issues);
+```
+
+The global error handler converts these to proper HTTP responses.
+
+## tsoa Decorators
+
+### Route Decorators
+
+| Decorator                                              | Description                               |
+| ------------------------------------------------------ | ----------------------------------------- |
+| `@Route('path')`                                       | Base path for all endpoints in controller |
+| `@Tags('TagName')`                                     | OpenAPI tag for grouping                  |
+| `@Get()`, `@Post()`, `@Put()`, `@Patch()`, `@Delete()` | HTTP methods                              |
+| `@Security('jwt')`                                     | Require authentication                    |
+| `@Security('jwt', ['admin'])`                          | Require specific roles                    |
+
+### Parameter Decorators
+
+| Decorator    | Description            | Example                               |
+| ------------ | ---------------------- | ------------------------------------- |
+| `@Path()`    | URL path parameter     | `@Path() id: string`                  |
+| `@Query()`   | Query string parameter | `@Query() search?: string`            |
+| `@Body()`    | Request body           | `@Body() data: CreateUserRequest`     |
+| `@Header()`  | Request header         | `@Header('X-Custom') custom?: string` |
+| `@Request()` | Full request context   | `@Request() ctx: RequestContext`      |
+
+### Response Decorators
+
+| Decorator                                    | Description                      |
+| -------------------------------------------- | -------------------------------- |
+| `@Response<ErrorResponse>(404, 'Not Found')` | Document possible error response |
+| `@SuccessResponse(201, 'Created')`           | Document success response        |
+
+## RequestContext
+
+The `RequestContext` interface provides access to request-scoped resources:
+
+```typescript
+interface RequestContext {
+  logger: Logger; // Request-scoped Pino logger (ADR-004)
+  requestId: string; // Unique request ID for correlation
+  user?: AuthenticatedUser; // Authenticated user (from JWT)
+  dbClient?: PoolClient; // Database client for transactions
+}
+
+interface AuthenticatedUser {
+  userId: string;
+  email: string;
+  roles?: string[];
+}
+```
+
+## Naming Conventions
+
+### Controller Class Names
+
+- PascalCase with `Controller` suffix
+- Example: `UsersController`, `HealthController`, `AuthController`
+
+### Method Names
+
+- camelCase, describing the action
+- Use verbs: `getUser`, `listUsers`, `createUser`, `updateUser`, `deleteUser`
+
+### File Names
+
+- kebab-case with `.controller.ts` suffix
+- Example: `users.controller.ts`, `health.controller.ts`
+
+## Service Layer Integration
+
+Controllers delegate to the service layer for business logic:
+
+```typescript
+@Route('flyers')
+@Tags('Flyers')
+export class FlyersController extends BaseController {
+  @Get('{id}')
+  public async getFlyer(
+    @Path() id: number,
+    @Request() ctx: RequestContext,
+  ): Promise<SuccessResponse<Flyer>> {
+    // Service handles business logic and database access
+    const flyer = await flyerService.getFlyerById(id, ctx.logger);
+    // Controller only formats the response
+    return this.success(flyer);
+  }
+}
+```
+
+**Rules:**
+
+1. Never access repositories directly from controllers
+2. Always pass the logger to service methods
+3. Let services throw domain errors (NotFoundError, etc.)
+4. Controllers catch and transform errors only when needed
+
+## Validation
+
+tsoa performs automatic validation based on TypeScript types. For complex validation, define request types:
+
+```typescript
+// In types.ts or a dedicated types file
+interface CreateUserRequest {
+  /**
+   * User's email address
+   * @format email
+   */
+  email: string;
+
+  /**
+   * User's password
+   * @minLength 8
+   */
+  password: string;
+
+  /**
+   * Full name (optional)
+   */
+  fullName?: string;
+}
+
+// In controller
+@Post()
+public async createUser(@Body() body: CreateUserRequest): Promise<SuccessResponse<User>> {
+  // body is already validated by tsoa
+  return this.created(await userService.createUser(body));
+}
+```
+
+For additional runtime validation (e.g., database constraints), use Zod in the service layer.
+
+## Error Handling Examples
+
+### Not Found
+
+```typescript
+@Get('{id}')
+public async getUser(@Path() id: string): Promise<SuccessResponse<User>> {
+  const user = await userService.findUserById(id);
+  if (!user) {
+    throw new NotFoundError(`User with ID ${id} not found`);
+  }
+  return this.success(user);
+}
+```
+
+### Authorization
+
+```typescript
+@Delete('{id}')
+@Security('jwt')
+public async deleteUser(
+  @Path() id: string,
+  @Request() ctx: RequestContext,
+): Promise<void> {
+  // Only allow users to delete their own account (or admins)
+  if (ctx.user?.userId !== id && !ctx.user?.roles?.includes('admin')) {
+    throw new ForbiddenError('Cannot delete another user account');
+  }
+  await userService.deleteUser(id, ctx.logger);
+  return this.noContent();
+}
+```
+
+### Conflict (Duplicate)
+
+```typescript
+@Post()
+public async createUser(@Body() body: CreateUserRequest): Promise<SuccessResponse<User>> {
+  try {
+    const user = await userService.createUser(body);
+    return this.created(user);
+  } catch (error) {
+    if (error instanceof UniqueConstraintError) {
+      this.setStatus(409);
+      throw error; // Let error handler format the response
+    }
+    throw error;
+  }
+}
+```
+
+## Testing Controllers
+
+Controllers should be tested via integration tests that verify the full HTTP request/response cycle:
+
+```typescript
+import { describe, it, expect } from 'vitest';
+import request from 'supertest';
+import { app } from '../app';
+
+describe('UsersController', () => {
+  describe('GET /api/v1/users/:id', () => {
+    it('should return user when found', async () => {
+      const response = await request(app)
+        .get('/api/v1/users/123')
+        .set('Authorization', `Bearer ${validToken}`)
+        .expect(200);
+
+      expect(response.body).toEqual({
+        success: true,
+        data: expect.objectContaining({
+          user_id: '123',
+        }),
+      });
+    });
+
+    it('should return 404 when user not found', async () => {
+      const response = await request(app)
+        .get('/api/v1/users/nonexistent')
+        .set('Authorization', `Bearer ${validToken}`)
+        .expect(404);
+
+      expect(response.body).toEqual({
+        success: false,
+        error: {
+          code: 'NOT_FOUND',
+          message: expect.any(String),
+        },
+      });
+    });
+  });
+});
+```
+
+## Migration from Express Routes
+
+When migrating existing Express routes to tsoa controllers:
+
+1. Create the controller class extending `BaseController`
+2. Add route decorators matching existing paths
+3. Move request handling logic (keep business logic in services)
+4. Replace `sendSuccess`/`sendError` with `this.success()`/throwing errors
+5. Update tests to use the new paths
+6. Remove the old Express route file
+
+## Related Documentation
+
+- [ADR-028: API Response Standards](../../docs/adr/ADR-028-api-response-standards.md)
+- [ADR-004: Request-Scoped Logging](../../docs/adr/0004-request-scoped-logging.md)
+- [CODE-PATTERNS.md](../../docs/development/CODE-PATTERNS.md)
+- [tsoa Documentation](https://tsoa-community.github.io/docs/)

src/controllers/admin.controller.test.ts

@@ -0,0 +1,974 @@
+// src/controllers/admin.controller.test.ts
+// ============================================================================
+// ADMIN CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the AdminController class. These tests verify controller
+// logic in isolation by mocking database repositories, services, and queues.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Put: () => () => {},
+  Delete: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+  Middlewares: () => () => {},
+}));
+
+// Mock database repositories
+vi.mock('../services/db/index.db', () => ({
+  adminRepo: {
+    getSuggestedCorrections: vi.fn(),
+    approveCorrection: vi.fn(),
+    rejectCorrection: vi.fn(),
+    updateSuggestedCorrection: vi.fn(),
+    getAllUsers: vi.fn(),
+    updateUserRole: vi.fn(),
+    updateRecipeStatus: vi.fn(),
+    updateRecipeCommentStatus: vi.fn(),
+    getFlyersForReview: vi.fn(),
+    getUnmatchedFlyerItems: vi.fn(),
+    getApplicationStats: vi.fn(),
+    getDailyStatsForLast30Days: vi.fn(),
+    getActivityLog: vi.fn(),
+  },
+  userRepo: {
+    findUserProfileById: vi.fn(),
+  },
+  flyerRepo: {
+    deleteFlyer: vi.fn(),
+    getAllBrands: vi.fn(),
+  },
+  recipeRepo: {
+    deleteRecipe: vi.fn(),
+  },
+}));
+
+// Mock services
+vi.mock('../services/backgroundJobService', () => ({
+  backgroundJobService: {
+    runDailyDealCheck: vi.fn(),
+    triggerAnalyticsReport: vi.fn(),
+    triggerWeeklyAnalyticsReport: vi.fn(),
+    triggerTokenCleanup: vi.fn(),
+  },
+}));
+
+vi.mock('../services/monitoringService.server', () => ({
+  monitoringService: {
+    getWorkerStatuses: vi.fn(),
+    getQueueStatuses: vi.fn(),
+    retryFailedJob: vi.fn(),
+  },
+}));
+
+vi.mock('../services/geocodingService.server', () => ({
+  geocodingService: {
+    clearGeocodeCache: vi.fn(),
+  },
+}));
+
+vi.mock('../services/cacheService.server', () => ({
+  cacheService: {
+    invalidateFlyers: vi.fn(),
+    invalidateBrands: vi.fn(),
+    invalidateStats: vi.fn(),
+  },
+}));
+
+vi.mock('../services/brandService', () => ({
+  brandService: {
+    updateBrandLogo: vi.fn(),
+  },
+}));
+
+vi.mock('../services/userService', () => ({
+  userService: {
+    deleteUserAsAdmin: vi.fn(),
+  },
+}));
+
+vi.mock('../services/featureFlags.server', () => ({
+  getFeatureFlags: vi.fn(),
+  FeatureFlagName: {},
+}));
+
+// Mock queues
+vi.mock('../services/queueService.server', () => ({
+  cleanupQueue: {
+    add: vi.fn(),
+  },
+  analyticsQueue: {
+    add: vi.fn(),
+  },
+}));
+
+// Mock rate limiters
+vi.mock('../config/rateLimiters', () => ({
+  adminTriggerLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+  adminUploadLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+}));
+
+// Mock file utils
+vi.mock('../utils/fileUtils', () => ({
+  cleanupUploadedFile: vi.fn(),
+}));
+
+// Mock websocket service (dynamic import)
+vi.mock('../services/websocketService.server', () => ({
+  websocketService: {
+    getConnectionStats: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import * as db from '../services/db/index.db';
+import { backgroundJobService } from '../services/backgroundJobService';
+import { monitoringService } from '../services/monitoringService.server';
+import { geocodingService } from '../services/geocodingService.server';
+import { cacheService } from '../services/cacheService.server';
+import { brandService } from '../services/brandService';
+import { userService } from '../services/userService';
+import { getFeatureFlags } from '../services/featureFlags.server';
+import { cleanupQueue, analyticsQueue } from '../services/queueService.server';
+import { AdminController } from './admin.controller';
+
+// Cast mocked modules for type-safe access using vi.mocked()
+const mockedAdminRepo = vi.mocked(db.adminRepo);
+const mockedUserRepo = vi.mocked(db.userRepo);
+const mockedFlyerRepo = vi.mocked(db.flyerRepo);
+const mockedRecipeRepo = vi.mocked(db.recipeRepo);
+const mockedBackgroundJobService = vi.mocked(backgroundJobService);
+const mockedMonitoringService = vi.mocked(monitoringService);
+const mockedGeoCodingService = vi.mocked(geocodingService);
+const mockedCacheService = vi.mocked(cacheService);
+const _mockedBrandService = vi.mocked(brandService);
+const mockedUserService = vi.mocked(userService);
+const mockedGetFeatureFlags = vi.mocked(getFeatureFlags);
+const mockedCleanupQueue = vi.mocked(cleanupQueue);
+const mockedAnalyticsQueue = vi.mocked(analyticsQueue);
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with admin user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    file: undefined,
+    user: createMockAdminProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock admin user profile.
+ */
+function createMockAdminProfile() {
+  return {
+    full_name: 'Admin User',
+    role: 'admin' as const,
+    user: {
+      user_id: 'admin-user-id',
+      email: 'admin@example.com',
+    },
+  };
+}
+
+/**
+ * Creates a mock correction object.
+ */
+function createMockCorrection(overrides: Record<string, unknown> = {}) {
+  return {
+    suggested_correction_id: 1,
+    flyer_item_id: 100,
+    user_id: 'user-123',
+    correction_type: 'master_item',
+    suggested_value: 'Organic Milk',
+    status: 'pending' as const,
+    flyer_item_name: 'Milk',
+    flyer_item_price_display: '$3.99',
+    user_email: 'user@example.com',
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('AdminController', () => {
+  let controller: AdminController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new AdminController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // CORRECTIONS MANAGEMENT
+  // ==========================================================================
+
+  describe('getCorrections()', () => {
+    it('should return pending corrections', async () => {
+      // Arrange
+      const mockCorrections = [
+        createMockCorrection(),
+        createMockCorrection({ suggested_correction_id: 2 }),
+      ];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getSuggestedCorrections.mockResolvedValue(mockCorrections);
+
+      // Act
+      const result = await controller.getCorrections(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+    });
+  });
+
+  describe('approveCorrection()', () => {
+    it('should approve a correction', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAdminRepo.approveCorrection.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.approveCorrection(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Correction approved successfully.');
+      }
+      expect(mockedAdminRepo.approveCorrection).toHaveBeenCalledWith(1, expect.anything());
+    });
+  });
+
+  describe('rejectCorrection()', () => {
+    it('should reject a correction', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAdminRepo.rejectCorrection.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.rejectCorrection(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Correction rejected successfully.');
+      }
+    });
+  });
+
+  describe('updateCorrection()', () => {
+    it('should update a correction value', async () => {
+      // Arrange
+      const mockUpdated = createMockCorrection({ suggested_value: 'Updated Value' });
+      const request = createMockRequest();
+
+      mockedAdminRepo.updateSuggestedCorrection.mockResolvedValue(mockUpdated);
+
+      // Act
+      const result = await controller.updateCorrection(
+        1,
+        { suggested_value: 'Updated Value' },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.suggested_value).toBe('Updated Value');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // USER MANAGEMENT
+  // ==========================================================================
+
+  describe('getUsers()', () => {
+    it('should return paginated user list', async () => {
+      // Arrange
+      const mockResult = {
+        users: [
+          {
+            user_id: 'user-1',
+            email: 'user1@example.com',
+            role: 'user' as const,
+            full_name: 'User One',
+            avatar_url: null,
+            created_at: '2024-01-01T00:00:00.000Z',
+          },
+          {
+            user_id: 'user-2',
+            email: 'user2@example.com',
+            role: 'admin' as const,
+            full_name: 'User Two',
+            avatar_url: null,
+            created_at: '2024-01-01T00:00:00.000Z',
+          },
+        ],
+        total: 2,
+      };
+      const request = createMockRequest();
+
+      mockedAdminRepo.getAllUsers.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getUsers(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.users).toHaveLength(2);
+        expect(result.data.total).toBe(2);
+      }
+    });
+
+    it('should respect pagination parameters', async () => {
+      // Arrange
+      const mockResult = { users: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedAdminRepo.getAllUsers.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getUsers(request, 50, 20);
+
+      // Assert
+      expect(mockedAdminRepo.getAllUsers).toHaveBeenCalledWith(expect.anything(), 50, 20);
+    });
+
+    it('should cap limit at 100', async () => {
+      // Arrange
+      const mockResult = { users: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedAdminRepo.getAllUsers.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getUsers(request, 200);
+
+      // Assert
+      expect(mockedAdminRepo.getAllUsers).toHaveBeenCalledWith(expect.anything(), 100, 0);
+    });
+  });
+
+  describe('getUserById()', () => {
+    it('should return user profile', async () => {
+      // Arrange
+      const mockProfile = {
+        full_name: 'Test User',
+        role: 'user' as const,
+        avatar_url: null,
+        address_id: null,
+        points: 100,
+        preferences: {},
+        created_by: null,
+        address: null,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+        user: {
+          user_id: 'user-123',
+          email: 'test@example.com',
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+        },
+      };
+      const request = createMockRequest();
+
+      mockedUserRepo.findUserProfileById.mockResolvedValue(mockProfile);
+
+      // Act
+      const result = await controller.getUserById('user-123', request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.user.user_id).toBe('user-123');
+      }
+    });
+  });
+
+  describe('updateUserRole()', () => {
+    it('should update user role', async () => {
+      // Arrange
+      const mockUpdated = {
+        full_name: 'Test User',
+        avatar_url: null,
+        address_id: null,
+        points: 100,
+        role: 'admin' as const,
+        preferences: {},
+        created_by: null,
+        updated_by: null,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+      };
+      const request = createMockRequest();
+
+      mockedAdminRepo.updateUserRole.mockResolvedValue(mockUpdated);
+
+      // Act
+      const result = await controller.updateUserRole('user-123', { role: 'admin' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.role).toBe('admin');
+      }
+    });
+  });
+
+  describe('deleteUser()', () => {
+    it('should delete a user', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedUserService.deleteUserAsAdmin.mockResolvedValue(undefined);
+
+      // Act
+      await controller.deleteUser('user-to-delete', request);
+
+      // Assert
+      expect(mockedUserService.deleteUserAsAdmin).toHaveBeenCalledWith(
+        'admin-user-id',
+        'user-to-delete',
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // CONTENT MANAGEMENT
+  // ==========================================================================
+
+  describe('updateRecipeStatus()', () => {
+    it('should update recipe status', async () => {
+      // Arrange
+      const mockRecipe = {
+        recipe_id: 1,
+        user_id: 'user-123',
+        original_recipe_id: null,
+        name: 'Test Recipe',
+        description: null,
+        instructions: null,
+        prep_time_minutes: null,
+        cook_time_minutes: null,
+        servings: null,
+        photo_url: null,
+        calories_per_serving: null,
+        protein_grams: null,
+        fat_grams: null,
+        carb_grams: null,
+        avg_rating: 0,
+        status: 'public' as const,
+        rating_count: 0,
+        fork_count: 0,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+      };
+      const request = createMockRequest();
+
+      mockedAdminRepo.updateRecipeStatus.mockResolvedValue(mockRecipe);
+
+      // Act
+      const result = await controller.updateRecipeStatus(1, { status: 'public' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('public');
+      }
+    });
+  });
+
+  describe('deleteRecipe()', () => {
+    it('should delete a recipe', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedRecipeRepo.deleteRecipe.mockResolvedValue(undefined);
+
+      // Act
+      await controller.deleteRecipe(1, request);
+
+      // Assert
+      expect(mockedRecipeRepo.deleteRecipe).toHaveBeenCalledWith(
+        1,
+        'admin-user-id',
+        true, // isAdmin
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('getFlyersForReview()', () => {
+    it('should return flyers needing review', async () => {
+      // Arrange
+      const mockFlyers = [
+        {
+          flyer_id: 1,
+          file_name: 'flyer-1.jpg',
+          image_url: 'https://example.com/flyer-images/flyer-1.jpg',
+          icon_url: 'https://example.com/flyer-images/icons/icon-flyer-1.webp',
+          checksum: 'mock-checksum-1',
+          store_id: 1,
+          valid_from: '2024-01-01',
+          valid_to: '2024-01-07',
+          store_address: '123 Main St',
+          status: 'needs_review' as const,
+          item_count: 50,
+          uploaded_by: null,
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+          store: {
+            store_id: 1,
+            name: 'Test Store',
+            logo_url: null,
+            created_by: null,
+            created_at: '2024-01-01T00:00:00.000Z',
+            updated_at: '2024-01-01T00:00:00.000Z',
+          },
+        },
+        {
+          flyer_id: 2,
+          file_name: 'flyer-2.jpg',
+          image_url: 'https://example.com/flyer-images/flyer-2.jpg',
+          icon_url: 'https://example.com/flyer-images/icons/icon-flyer-2.webp',
+          checksum: 'mock-checksum-2',
+          store_id: 2,
+          valid_from: '2024-01-01',
+          valid_to: '2024-01-07',
+          store_address: '456 Other St',
+          status: 'needs_review' as const,
+          item_count: 30,
+          uploaded_by: null,
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+          store: {
+            store_id: 2,
+            name: 'Other Store',
+            logo_url: null,
+            created_by: null,
+            created_at: '2024-01-01T00:00:00.000Z',
+            updated_at: '2024-01-01T00:00:00.000Z',
+          },
+        },
+      ];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getFlyersForReview.mockResolvedValue(mockFlyers);
+
+      // Act
+      const result = await controller.getFlyersForReview(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+    });
+  });
+
+  describe('deleteFlyer()', () => {
+    it('should delete a flyer', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.deleteFlyer.mockResolvedValue(undefined);
+
+      // Act
+      await controller.deleteFlyer(1, request);
+
+      // Assert
+      expect(mockedFlyerRepo.deleteFlyer).toHaveBeenCalledWith(1, expect.anything());
+    });
+  });
+
+  describe('triggerFlyerCleanup()', () => {
+    it('should enqueue cleanup job', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedCleanupQueue.add.mockResolvedValue({} as never);
+
+      // Act
+      const result = await controller.triggerFlyerCleanup(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('File cleanup job');
+      }
+      expect(mockedCleanupQueue.add).toHaveBeenCalledWith('cleanup-flyer-files', { flyerId: 1 });
+    });
+  });
+
+  // ==========================================================================
+  // STATISTICS
+  // ==========================================================================
+
+  describe('getStats()', () => {
+    it('should return application statistics', async () => {
+      // Arrange
+      const mockStats = {
+        flyerCount: 100,
+        userCount: 50,
+        flyerItemCount: 500,
+        storeCount: 20,
+        pendingCorrectionCount: 5,
+        recipeCount: 30,
+      };
+      const request = createMockRequest();
+
+      mockedAdminRepo.getApplicationStats.mockResolvedValue(mockStats);
+
+      // Act
+      const result = await controller.getStats(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.flyerCount).toBe(100);
+        expect(result.data.userCount).toBe(50);
+      }
+    });
+  });
+
+  describe('getDailyStats()', () => {
+    it('should return daily statistics', async () => {
+      // Arrange
+      const mockDailyStats = [
+        { date: '2024-01-01', new_users: 5, new_flyers: 10 },
+        { date: '2024-01-02', new_users: 3, new_flyers: 8 },
+      ];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getDailyStatsForLast30Days.mockResolvedValue(mockDailyStats);
+
+      // Act
+      const result = await controller.getDailyStats(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // QUEUE/WORKER MONITORING
+  // ==========================================================================
+
+  describe('getWorkerStatuses()', () => {
+    it('should return worker statuses', async () => {
+      // Arrange
+      const mockStatuses = [
+        { name: 'flyer-processor', isRunning: true },
+        { name: 'email-sender', isRunning: true },
+      ];
+      const request = createMockRequest();
+
+      mockedMonitoringService.getWorkerStatuses.mockResolvedValue(mockStatuses);
+
+      // Act
+      const result = await controller.getWorkerStatuses(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].isRunning).toBe(true);
+      }
+    });
+  });
+
+  describe('getQueueStatuses()', () => {
+    it('should return queue statuses', async () => {
+      // Arrange
+      const mockStatuses = [
+        {
+          name: 'flyer-processing',
+          counts: { waiting: 0, active: 1, completed: 100, failed: 2, delayed: 0, paused: 0 },
+        },
+      ];
+      const request = createMockRequest();
+
+      mockedMonitoringService.getQueueStatuses.mockResolvedValue(mockStatuses);
+
+      // Act
+      const result = await controller.getQueueStatuses(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(1);
+        expect(result.data[0].counts.completed).toBe(100);
+      }
+    });
+  });
+
+  describe('retryJob()', () => {
+    it('should retry a failed job', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedMonitoringService.retryFailedJob.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.retryJob('flyer-processing', 'job-123', request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('job-123');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BACKGROUND JOB TRIGGERS
+  // ==========================================================================
+
+  describe('triggerDailyDealCheck()', () => {
+    it('should trigger daily deal check', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.triggerDailyDealCheck(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('Daily deal check');
+      }
+      expect(mockedBackgroundJobService.runDailyDealCheck).toHaveBeenCalled();
+    });
+  });
+
+  describe('triggerAnalyticsReport()', () => {
+    it('should trigger analytics report', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBackgroundJobService.triggerAnalyticsReport.mockResolvedValue('job-456');
+
+      // Act
+      const result = await controller.triggerAnalyticsReport(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.jobId).toBe('job-456');
+      }
+    });
+  });
+
+  describe('triggerWeeklyAnalytics()', () => {
+    it('should trigger weekly analytics', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBackgroundJobService.triggerWeeklyAnalyticsReport.mockResolvedValue('weekly-job-1');
+
+      // Act
+      const result = await controller.triggerWeeklyAnalytics(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.jobId).toBe('weekly-job-1');
+      }
+    });
+  });
+
+  describe('triggerTokenCleanup()', () => {
+    it('should trigger token cleanup', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBackgroundJobService.triggerTokenCleanup.mockResolvedValue('cleanup-job-1');
+
+      // Act
+      const result = await controller.triggerTokenCleanup(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.jobId).toBe('cleanup-job-1');
+      }
+    });
+  });
+
+  describe('triggerFailingJob()', () => {
+    it('should trigger a failing test job', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAnalyticsQueue.add.mockResolvedValue({ id: 'fail-job-1' } as never);
+
+      // Act
+      const result = await controller.triggerFailingJob(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.jobId).toBe('fail-job-1');
+      }
+      expect(mockedAnalyticsQueue.add).toHaveBeenCalledWith('generate-daily-report', {
+        reportDate: 'FAIL',
+      });
+    });
+  });
+
+  // ==========================================================================
+  // SYSTEM OPERATIONS
+  // ==========================================================================
+
+  describe('clearGeocodeCache()', () => {
+    it('should clear geocode cache', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedGeoCodingService.clearGeocodeCache.mockResolvedValue(50);
+
+      // Act
+      const result = await controller.clearGeocodeCache(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('50 keys');
+      }
+    });
+  });
+
+  describe('clearApplicationCache()', () => {
+    it('should clear all application caches', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedCacheService.invalidateFlyers.mockResolvedValue(10);
+      mockedCacheService.invalidateBrands.mockResolvedValue(5);
+      mockedCacheService.invalidateStats.mockResolvedValue(3);
+
+      // Act
+      const result = await controller.clearApplicationCache(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('18 keys');
+        expect(result.data.details?.flyers).toBe(10);
+        expect(result.data.details?.brands).toBe(5);
+        expect(result.data.details?.stats).toBe(3);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // FEATURE FLAGS
+  // ==========================================================================
+
+  describe('getFeatureFlags()', () => {
+    it('should return feature flags', async () => {
+      // Arrange
+      const mockFlags = {
+        newDashboard: true,
+        betaRecipes: false,
+        experimentalAi: false,
+        debugMode: false,
+        bugsinkSync: false,
+        advancedRbac: false,
+      };
+      const request = createMockRequest();
+
+      mockedGetFeatureFlags.mockReturnValue(mockFlags);
+
+      // Act
+      const result = await controller.getFeatureFlags(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.flags.newDashboard).toBe(true);
+        expect(result.data.flags.betaRecipes).toBe(false);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockStats = {
+        flyerCount: 0,
+        userCount: 0,
+        flyerItemCount: 0,
+        storeCount: 0,
+        pendingCorrectionCount: 0,
+        recipeCount: 0,
+      };
+      const request = createMockRequest();
+
+      mockedAdminRepo.getApplicationStats.mockResolvedValue(mockStats);
+
+      // Act
+      const result = await controller.getStats(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+  });
+});

src/controllers/ai.controller.test.ts

@@ -0,0 +1,632 @@
+// src/controllers/ai.controller.test.ts
+// ============================================================================
+// AI CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the AIController class. These tests verify controller
+// logic in isolation by mocking AI service and monitoring service.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger, asErrorResponse } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  FormField: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+  Middlewares: () => () => {},
+}));
+
+// Mock AI service
+vi.mock('../services/aiService.server', () => ({
+  aiService: {
+    enqueueFlyerProcessing: vi.fn(),
+    processLegacyFlyerUpload: vi.fn(),
+    extractTextFromImageArea: vi.fn(),
+    planTripWithMaps: vi.fn(),
+  },
+  DuplicateFlyerError: class DuplicateFlyerError extends Error {
+    flyerId: number;
+    constructor(message: string, flyerId: number) {
+      super(message);
+      this.flyerId = flyerId;
+    }
+  },
+}));
+
+// Mock monitoring service
+vi.mock('../services/monitoringService.server', () => ({
+  monitoringService: {
+    getFlyerJobStatus: vi.fn(),
+  },
+}));
+
+// Mock file utils
+vi.mock('../utils/fileUtils', () => ({
+  cleanupUploadedFile: vi.fn(),
+  cleanupUploadedFiles: vi.fn(),
+}));
+
+// Mock rate limiters
+vi.mock('../config/rateLimiters', () => ({
+  aiUploadLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+  aiGenerationLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+}));
+
+// Import mocked modules after mock definitions
+import { aiService, DuplicateFlyerError } from '../services/aiService.server';
+import { monitoringService } from '../services/monitoringService.server';
+import { AIController } from './ai.controller';
+
+// Cast mocked modules for type-safe access
+const mockedAiService = aiService as Mocked<typeof aiService>;
+const mockedMonitoringService = monitoringService as Mocked<typeof monitoringService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    headers: {},
+    ip: '127.0.0.1',
+    file: undefined,
+    files: undefined,
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    role: 'user' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock uploaded file.
+ */
+function createMockFile(overrides: Partial<Express.Multer.File> = {}): Express.Multer.File {
+  return {
+    fieldname: 'flyerFile',
+    originalname: 'test-flyer.jpg',
+    encoding: '7bit',
+    mimetype: 'image/jpeg',
+    size: 1024,
+    destination: '/tmp/uploads',
+    filename: 'abc123.jpg',
+    path: '/tmp/uploads/abc123.jpg',
+    buffer: Buffer.from('mock file content'),
+    stream: {} as never,
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('AIController', () => {
+  let controller: AIController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new AIController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // FLYER UPLOAD ENDPOINTS
+  // ==========================================================================
+
+  describe('uploadAndProcess()', () => {
+    it('should accept flyer for processing', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      mockedAiService.enqueueFlyerProcessing.mockResolvedValue({ id: 'job-123' } as never);
+
+      // Act
+      const result = await controller.uploadAndProcess(
+        request,
+        'a'.repeat(64), // valid checksum
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.jobId).toBe('job-123');
+        expect(result.data.message).toContain('Flyer accepted');
+      }
+    });
+
+    it('should reject invalid checksum format', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      // Act & Assert
+      await expect(controller.uploadAndProcess(request, 'invalid')).rejects.toThrow(
+        'Checksum must be a 64-character hexadecimal string.',
+      );
+    });
+
+    it('should reject when no file uploaded', async () => {
+      // Arrange
+      const request = createMockRequest({ file: undefined });
+
+      // Act & Assert
+      await expect(controller.uploadAndProcess(request, 'a'.repeat(64))).rejects.toThrow(
+        'A flyer file (PDF or image) is required.',
+      );
+    });
+
+    it('should handle duplicate flyer error', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      mockedAiService.enqueueFlyerProcessing.mockRejectedValue(
+        new DuplicateFlyerError('Duplicate flyer', 42),
+      );
+
+      // Act
+      const result = await controller.uploadAndProcess(request, 'a'.repeat(64));
+
+      // Assert
+      expect(result.success).toBe(false);
+      const errorBody = asErrorResponse(result);
+      expect(errorBody.error.code).toBe('CONFLICT');
+      expect(errorBody.error.details).toEqual({ flyerId: 42 });
+    });
+  });
+
+  describe('uploadLegacy()', () => {
+    it('should process legacy upload', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const mockFlyer = { flyer_id: 1, file_name: 'test.jpg' };
+      const request = createMockRequest({ file: mockFile });
+
+      mockedAiService.processLegacyFlyerUpload.mockResolvedValue(mockFlyer as never);
+
+      // Act
+      const result = await controller.uploadLegacy(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.flyer_id).toBe(1);
+      }
+    });
+
+    it('should reject when no file uploaded', async () => {
+      // Arrange
+      const request = createMockRequest({ file: undefined });
+
+      // Act & Assert
+      await expect(controller.uploadLegacy(request)).rejects.toThrow('No flyer file uploaded.');
+    });
+  });
+
+  describe('processFlyer()', () => {
+    it('should process flyer data', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const mockFlyer = { flyer_id: 1, file_name: 'test.jpg' };
+      const request = createMockRequest({ file: mockFile });
+
+      mockedAiService.processLegacyFlyerUpload.mockResolvedValue(mockFlyer as never);
+
+      // Act
+      const result = await controller.processFlyer(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('processed');
+        expect(result.data.flyer.flyer_id).toBe(1);
+      }
+    });
+
+    it('should reject when no file uploaded', async () => {
+      // Arrange
+      const request = createMockRequest({ file: undefined });
+
+      // Act & Assert
+      await expect(controller.processFlyer(request)).rejects.toThrow(
+        'Flyer image file is required.',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // JOB STATUS ENDPOINT
+  // ==========================================================================
+
+  describe('getJobStatus()', () => {
+    it('should return job status', async () => {
+      // Arrange
+      const mockStatus = {
+        id: 'job-123',
+        state: 'completed',
+        progress: 100,
+        returnValue: { flyer_id: 1 },
+        failedReason: null,
+      };
+      const request = createMockRequest();
+
+      mockedMonitoringService.getFlyerJobStatus.mockResolvedValue(mockStatus);
+
+      // Act
+      const result = await controller.getJobStatus('job-123', request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.id).toBe('job-123');
+        expect(result.data.state).toBe('completed');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // IMAGE ANALYSIS ENDPOINTS
+  // ==========================================================================
+
+  describe('checkFlyer()', () => {
+    it('should check if image is a flyer', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      // Act
+      const result = await controller.checkFlyer(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.is_flyer).toBe(true);
+      }
+    });
+
+    it('should reject when no file uploaded', async () => {
+      // Arrange
+      const request = createMockRequest({ file: undefined });
+
+      // Act & Assert
+      await expect(controller.checkFlyer(request)).rejects.toThrow('Image file is required.');
+    });
+  });
+
+  describe('extractAddress()', () => {
+    it('should extract address from image', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      // Act
+      const result = await controller.extractAddress(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.address).toBe('not identified');
+      }
+    });
+  });
+
+  describe('extractLogo()', () => {
+    it('should extract logo from images', async () => {
+      // Arrange
+      const mockFiles = [createMockFile()];
+      const request = createMockRequest({ files: mockFiles });
+
+      // Act
+      const result = await controller.extractLogo(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.store_logo_base_64).toBeNull();
+      }
+    });
+
+    it('should reject when no files uploaded', async () => {
+      // Arrange
+      const request = createMockRequest({ files: [] });
+
+      // Act & Assert
+      await expect(controller.extractLogo(request)).rejects.toThrow('Image files are required.');
+    });
+  });
+
+  describe('rescanArea()', () => {
+    it('should rescan a specific area', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      mockedAiService.extractTextFromImageArea.mockResolvedValue({ text: 'Extracted text' });
+
+      // Act
+      const result = await controller.rescanArea(
+        request,
+        JSON.stringify({ x: 10, y: 10, width: 100, height: 100 }),
+        'item_details',
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.text).toBe('Extracted text');
+      }
+    });
+
+    it('should reject invalid cropArea JSON', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      // Act & Assert
+      await expect(controller.rescanArea(request, 'invalid json', 'item_details')).rejects.toThrow(
+        'cropArea must be a valid JSON string.',
+      );
+    });
+
+    it('should reject cropArea with missing properties', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      // Act & Assert
+      await expect(
+        controller.rescanArea(request, JSON.stringify({ x: 10 }), 'item_details'),
+      ).rejects.toThrow('cropArea must contain numeric x, y, width, and height properties.');
+    });
+
+    it('should reject cropArea with zero width', async () => {
+      // Arrange
+      const mockFile = createMockFile();
+      const request = createMockRequest({ file: mockFile });
+
+      // Act & Assert
+      await expect(
+        controller.rescanArea(
+          request,
+          JSON.stringify({ x: 10, y: 10, width: 0, height: 100 }),
+          'item_details',
+        ),
+      ).rejects.toThrow('Crop area width must be positive.');
+    });
+  });
+
+  // ==========================================================================
+  // AI INSIGHTS ENDPOINTS
+  // ==========================================================================
+
+  describe('getQuickInsights()', () => {
+    it('should return quick insights', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getQuickInsights(request, {
+        items: [{ item: 'Milk' }],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.text).toContain('quick insight');
+      }
+    });
+  });
+
+  describe('getDeepDive()', () => {
+    it('should return deep dive analysis', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getDeepDive(request, {
+        items: [{ item: 'Chicken' }],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.text).toContain('deep dive');
+      }
+    });
+  });
+
+  describe('searchWeb()', () => {
+    it('should search the web', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.searchWeb(request, {
+        query: 'best grocery deals',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.text).toBeDefined();
+        expect(result.data.sources).toBeDefined();
+      }
+    });
+  });
+
+  describe('comparePrices()', () => {
+    it('should compare prices', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.comparePrices(request, {
+        items: [{ item: 'Milk' }],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.text).toContain('price comparison');
+      }
+    });
+  });
+
+  describe('planTrip()', () => {
+    it('should plan a shopping trip', async () => {
+      // Arrange
+      const mockResult = {
+        text: 'Here is your trip plan',
+        sources: [{ uri: 'https://maps.google.com', title: 'Google Maps' }],
+      };
+      const request = createMockRequest();
+
+      mockedAiService.planTripWithMaps.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.planTrip(request, {
+        items: [{ item: 'Milk' }],
+        store: { name: 'SuperMart' },
+        userLocation: { latitude: 43.65, longitude: -79.38 },
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.text).toContain('trip plan');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // STUBBED FUTURE ENDPOINTS
+  // ==========================================================================
+
+  describe('generateImage()', () => {
+    it('should return 501 not implemented', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.generateImage(request, {
+        prompt: 'A grocery store',
+      });
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.code).toBe('NOT_IMPLEMENTED');
+      }
+    });
+  });
+
+  describe('generateSpeech()', () => {
+    it('should return 501 not implemented', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.generateSpeech(request, {
+        text: 'Hello world',
+      });
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.code).toBe('NOT_IMPLEMENTED');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockStatus = {
+        id: 'job-1',
+        state: 'active',
+        progress: 50,
+        returnValue: null,
+        failedReason: null,
+      };
+      const request = createMockRequest();
+
+      mockedMonitoringService.getFlyerJobStatus.mockResolvedValue(mockStatus);
+
+      // Act
+      const result = await controller.getJobStatus('job-1', request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use error helper for error responses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.generateImage(request, { prompt: 'test' });
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error).toHaveProperty('code');
+        expect(result.error).toHaveProperty('message');
+      }
+    });
+  });
+});

src/controllers/ai.controller.ts

@@ -0,0 +1,937 @@
+// src/controllers/ai.controller.ts
+// ============================================================================
+// AI CONTROLLER
+// ============================================================================
+// Provides endpoints for AI-powered flyer processing, item extraction, and
+// various AI-assisted features including OCR, insights generation, and
+// trip planning.
+//
+// Key Features:
+// - Flyer upload and asynchronous processing via BullMQ
+// - Image-based text extraction (OCR) and rescan
+// - AI-generated insights, price comparisons, and trip planning
+// - Legacy upload endpoints for backward compatibility
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Route,
+  Tags,
+  Security,
+  Body,
+  Path,
+  Request,
+  SuccessResponse,
+  Response,
+  FormField,
+  Middlewares,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController, ControllerErrorCode } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { aiService, DuplicateFlyerError } from '../services/aiService.server';
+import { monitoringService } from '../services/monitoringService.server';
+import { cleanupUploadedFile, cleanupUploadedFiles } from '../utils/fileUtils';
+import { aiUploadLimiter, aiGenerationLimiter } from '../config/rateLimiters';
+import type { UserProfile, FlyerItem } from '../types';
+import type { FlyerDto } from '../dtos/common.dto';
+
+// ============================================================================
+// DTO TYPES FOR OPENAPI
+// ============================================================================
+// These Data Transfer Object types define the API contract for AI endpoints.
+// They are used by tsoa to generate OpenAPI specifications.
+// ============================================================================
+
+/**
+ * Crop area coordinates for targeted image rescanning.
+ */
+interface CropArea {
+  /** X coordinate of the top-left corner */
+  x: number;
+  /** Y coordinate of the top-left corner */
+  y: number;
+  /** Width of the crop area in pixels */
+  width: number;
+  /** Height of the crop area in pixels */
+  height: number;
+}
+
+/**
+ * Type of data to extract from a rescan operation.
+ */
+type ExtractionType = 'store_name' | 'dates' | 'item_details';
+
+/**
+ * Flyer item for AI analysis.
+ * At least one of 'item' or 'name' must be provided.
+ */
+interface FlyerItemForAnalysis {
+  /** Item name/description (primary identifier) */
+  item?: string;
+  /** Alternative item name field */
+  name?: string;
+  /** Additional properties are allowed */
+  [key: string]: unknown;
+}
+
+/**
+ * Store information for trip planning.
+ */
+interface StoreInfo {
+  /** Store name */
+  name: string;
+}
+
+/**
+ * User's geographic location for trip planning.
+ */
+interface UserLocation {
+  /**
+   * Latitude coordinate.
+   * @minimum -90
+   * @maximum 90
+   */
+  latitude: number;
+  /**
+   * Longitude coordinate.
+   * @minimum -180
+   * @maximum 180
+   */
+  longitude: number;
+}
+
+// ============================================================================
+// REQUEST TYPES
+// ============================================================================
+
+/**
+ * Request body for quick insights or deep dive analysis.
+ */
+interface InsightsRequest {
+  /**
+   * Array of items to analyze.
+   * @minItems 1
+   */
+  items: FlyerItemForAnalysis[];
+}
+
+/**
+ * Request body for price comparison.
+ */
+interface ComparePricesRequest {
+  /**
+   * Array of items to compare prices for.
+   * @minItems 1
+   */
+  items: FlyerItemForAnalysis[];
+}
+
+/**
+ * Request body for trip planning.
+ */
+interface PlanTripRequest {
+  /** Items to buy on the trip */
+  items: FlyerItemForAnalysis[];
+  /** Target store information */
+  store: StoreInfo;
+  /** User's current location */
+  userLocation: UserLocation;
+}
+
+/**
+ * Request body for image generation (not implemented).
+ */
+interface GenerateImageRequest {
+  /**
+   * Prompt for image generation.
+   * @minLength 1
+   */
+  prompt: string;
+}
+
+/**
+ * Request body for speech generation (not implemented).
+ */
+interface GenerateSpeechRequest {
+  /**
+   * Text to convert to speech.
+   * @minLength 1
+   */
+  text: string;
+}
+
+/**
+ * Request body for web search.
+ */
+interface SearchWebRequest {
+  /**
+   * Search query.
+   * @minLength 1
+   */
+  query: string;
+}
+
+// RescanAreaRequest is handled via route-level form parsing
+
+// ============================================================================
+// RESPONSE TYPES
+// ============================================================================
+
+/**
+ * Response for successful flyer upload.
+ */
+interface UploadProcessResponse {
+  /** Success message */
+  message: string;
+  /** Background job ID for tracking processing status */
+  jobId: string;
+}
+
+/**
+ * Response for duplicate flyer detection.
+ */
+interface DuplicateFlyerResponse {
+  /** Existing flyer ID */
+  flyerId: number;
+}
+
+/**
+ * Response for job status check.
+ */
+interface JobStatusResponse {
+  /** Job ID */
+  id: string;
+  /** Current job state */
+  state: string;
+  /** Processing progress (0-100 or object with details) */
+  progress: number | object | string | boolean;
+  /** Return value when job is completed */
+  returnValue: unknown;
+  /** Error reason if job failed */
+  failedReason: string | null;
+}
+
+/**
+ * Response for flyer check.
+ */
+interface FlyerCheckResponse {
+  /** Whether the image is identified as a flyer */
+  is_flyer: boolean;
+}
+
+/**
+ * Response for address extraction.
+ */
+interface ExtractAddressResponse {
+  /** Extracted address or 'not identified' if not found */
+  address: string;
+}
+
+/**
+ * Response for logo extraction.
+ */
+interface ExtractLogoResponse {
+  /** Base64-encoded logo image or null if not found */
+  store_logo_base_64: string | null;
+}
+
+/**
+ * Response for text-based AI features (insights, deep dive, etc.).
+ */
+interface TextResponse {
+  /** AI-generated text response */
+  text: string;
+}
+
+/**
+ * Response for web search.
+ */
+interface SearchWebResponse {
+  /** AI-generated response */
+  text: string;
+  /** Source references */
+  sources: { uri: string; title: string }[];
+}
+
+/**
+ * Response for trip planning.
+ */
+interface PlanTripResponse {
+  /** AI-generated trip plan */
+  text: string;
+  /** Map and store sources */
+  sources: { uri: string; title: string }[];
+}
+
+/**
+ * Response for rescan area.
+ */
+interface RescanAreaResponse {
+  /** Extracted text from the cropped area */
+  text: string | undefined;
+}
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Parses cropArea JSON string into a validated CropArea object.
+ * @param cropAreaStr JSON string containing crop area coordinates
+ * @returns Parsed and validated CropArea object
+ * @throws Error if parsing fails or validation fails
+ */
+function parseCropArea(cropAreaStr: string): CropArea {
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(cropAreaStr);
+  } catch {
+    throw new Error('cropArea must be a valid JSON string.');
+  }
+
+  // Validate structure
+  if (typeof parsed !== 'object' || parsed === null) {
+    throw new Error('cropArea must be a valid JSON object.');
+  }
+
+  const obj = parsed as Record<string, unknown>;
+
+  if (
+    typeof obj.x !== 'number' ||
+    typeof obj.y !== 'number' ||
+    typeof obj.width !== 'number' ||
+    typeof obj.height !== 'number'
+  ) {
+    throw new Error('cropArea must contain numeric x, y, width, and height properties.');
+  }
+
+  if (obj.width <= 0) {
+    throw new Error('Crop area width must be positive.');
+  }
+
+  if (obj.height <= 0) {
+    throw new Error('Crop area height must be positive.');
+  }
+
+  return {
+    x: obj.x,
+    y: obj.y,
+    width: obj.width,
+    height: obj.height,
+  };
+}
+
+// ============================================================================
+// AI CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for AI-powered flyer processing and analysis.
+ *
+ * Provides endpoints for:
+ * - Uploading and processing flyers with AI extraction
+ * - Checking processing job status
+ * - Targeted image rescanning for specific data extraction
+ * - AI-generated insights and recommendations
+ * - Price comparisons and trip planning
+ *
+ * File upload endpoints expect multipart/form-data and are configured
+ * with Express middleware for multer file handling.
+ */
+@Route('ai')
+@Tags('AI')
+export class AIController extends BaseController {
+  // ==========================================================================
+  // FLYER UPLOAD ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Upload and process a flyer.
+   *
+   * Accepts a single flyer file (PDF or image), validates the checksum to
+   * prevent duplicates, and enqueues it for background AI processing.
+   * Returns immediately with a job ID for tracking.
+   *
+   * The file upload is handled by Express middleware (multer).
+   * The endpoint expects multipart/form-data with:
+   * - flyerFile: The flyer image/PDF file
+   * - checksum: SHA-256 checksum of the file (64 hex characters)
+   * - baseUrl: Optional base URL override
+   *
+   * @summary Upload and process flyer
+   * @param request Express request with uploaded file
+   * @param checksum SHA-256 checksum of the file (64 hex characters)
+   * @param baseUrl Optional base URL for generated image URLs
+   * @returns Job ID for tracking processing status
+   */
+  @Post('upload-and-process')
+  @Middlewares(aiUploadLimiter)
+  @SuccessResponse(202, 'Flyer accepted for processing')
+  @Response<ErrorResponse>(400, 'Missing file or invalid checksum')
+  @Response<ErrorResponse & { error: { details: DuplicateFlyerResponse } }>(
+    409,
+    'Duplicate flyer detected',
+  )
+  public async uploadAndProcess(
+    @Request() request: ExpressRequest,
+    @FormField() checksum: string,
+    @FormField() baseUrl?: string,
+  ): Promise<SuccessResponseType<UploadProcessResponse>> {
+    const file = request.file as Express.Multer.File | undefined;
+
+    // Validate checksum format
+    if (!checksum || checksum.length !== 64 || !/^[a-f0-9]+$/.test(checksum)) {
+      this.setStatus(400);
+      throw new Error('Checksum must be a 64-character hexadecimal string.');
+    }
+
+    // Validate file was uploaded
+    if (!file) {
+      this.setStatus(400);
+      throw new Error('A flyer file (PDF or image) is required.');
+    }
+
+    request.log.debug(
+      { filename: file.originalname, size: file.size, checksum },
+      'Handling upload-and-process',
+    );
+
+    try {
+      // Handle optional authentication - clear user if no auth header in test/staging
+      let userProfile = request.user as UserProfile | undefined;
+      if (
+        (process.env.NODE_ENV === 'test' || process.env.NODE_ENV === 'staging') &&
+        !request.headers['authorization']
+      ) {
+        userProfile = undefined;
+      }
+
+      const job = await aiService.enqueueFlyerProcessing(
+        file,
+        checksum,
+        userProfile,
+        request.ip ?? 'unknown',
+        request.log,
+        baseUrl,
+      );
+
+      this.setStatus(202);
+      return this.success({
+        message: 'Flyer accepted for processing.',
+        jobId: job.id!,
+      });
+    } catch (error) {
+      await cleanupUploadedFile(file);
+
+      if (error instanceof DuplicateFlyerError) {
+        request.log.warn(`Duplicate flyer upload attempt blocked for checksum: ${checksum}`);
+        this.setStatus(409);
+        return this.error(ControllerErrorCode.CONFLICT, error.message, {
+          flyerId: error.flyerId,
+        }) as unknown as SuccessResponseType<UploadProcessResponse>;
+      }
+
+      throw error;
+    }
+  }
+
+  /**
+   * Legacy flyer upload (deprecated).
+   *
+   * Process a flyer upload synchronously. This endpoint is deprecated
+   * and will be removed in a future version. Use /upload-and-process instead.
+   *
+   * @summary Legacy flyer upload (deprecated)
+   * @param request Express request with uploaded file
+   * @returns The processed flyer data
+   * @deprecated Use /upload-and-process instead
+   */
+  @Post('upload-legacy')
+  @Security('bearerAuth')
+  @Middlewares(aiUploadLimiter)
+  @SuccessResponse(200, 'Flyer processed successfully')
+  @Response<ErrorResponse>(400, 'No flyer file uploaded')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(409, 'Duplicate flyer detected')
+  public async uploadLegacy(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<FlyerDto>> {
+    const file = request.file as Express.Multer.File | undefined;
+
+    if (!file) {
+      this.setStatus(400);
+      throw new Error('No flyer file uploaded.');
+    }
+
+    const userProfile = request.user as UserProfile;
+
+    try {
+      const newFlyer = await aiService.processLegacyFlyerUpload(
+        file,
+        request.body,
+        userProfile,
+        request.log,
+      );
+
+      return this.success(newFlyer);
+    } catch (error) {
+      await cleanupUploadedFile(file);
+
+      if (error instanceof DuplicateFlyerError) {
+        request.log.warn('Duplicate legacy flyer upload attempt blocked.');
+        this.setStatus(409);
+        return this.error(ControllerErrorCode.CONFLICT, error.message, {
+          flyerId: error.flyerId,
+        }) as unknown as SuccessResponseType<FlyerDto>;
+      }
+
+      throw error;
+    }
+  }
+
+  /**
+   * Process flyer data (deprecated).
+   *
+   * Saves processed flyer data to the database. This endpoint is deprecated
+   * and will be removed in a future version. Use /upload-and-process instead.
+   *
+   * @summary Process flyer data (deprecated)
+   * @param request Express request with uploaded file
+   * @returns Success message with flyer data
+   * @deprecated Use /upload-and-process instead
+   */
+  @Post('flyers/process')
+  @Middlewares(aiUploadLimiter)
+  @SuccessResponse(201, 'Flyer processed and saved successfully')
+  @Response<ErrorResponse>(400, 'Flyer image file is required')
+  @Response<ErrorResponse>(409, 'Duplicate flyer detected')
+  public async processFlyer(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<{ message: string; flyer: FlyerDto }>> {
+    const file = request.file as Express.Multer.File | undefined;
+
+    if (!file) {
+      this.setStatus(400);
+      throw new Error('Flyer image file is required.');
+    }
+
+    const userProfile = request.user as UserProfile | undefined;
+
+    try {
+      const newFlyer = await aiService.processLegacyFlyerUpload(
+        file,
+        request.body,
+        userProfile,
+        request.log,
+      );
+
+      return this.created({ message: 'Flyer processed and saved successfully.', flyer: newFlyer });
+    } catch (error) {
+      await cleanupUploadedFile(file);
+
+      if (error instanceof DuplicateFlyerError) {
+        request.log.warn('Duplicate flyer upload attempt blocked.');
+        this.setStatus(409);
+        return this.error(ControllerErrorCode.CONFLICT, error.message, {
+          flyerId: error.flyerId,
+        }) as unknown as SuccessResponseType<{ message: string; flyer: FlyerDto }>;
+      }
+
+      throw error;
+    }
+  }
+
+  // ==========================================================================
+  // JOB STATUS ENDPOINT
+  // ==========================================================================
+
+  /**
+   * Check job status.
+   *
+   * Checks the status of a background flyer processing job.
+   * Use this endpoint to poll for completion after uploading a flyer.
+   *
+   * @summary Check job status
+   * @param jobId Job ID returned from upload-and-process
+   * @param request Express request for logging
+   * @returns Job status information
+   */
+  @Get('jobs/{jobId}/status')
+  @SuccessResponse(200, 'Job status retrieved')
+  @Response<ErrorResponse>(404, 'Job not found')
+  public async getJobStatus(
+    @Path() jobId: string,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<JobStatusResponse>> {
+    const jobStatus = await monitoringService.getFlyerJobStatus(jobId);
+    request.log.debug(`Status check for job ${jobId}: ${jobStatus.state}`);
+    return this.success(jobStatus);
+  }
+
+  // ==========================================================================
+  // IMAGE ANALYSIS ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Check if image is a flyer.
+   *
+   * Analyzes an uploaded image to determine if it's a grocery store flyer.
+   *
+   * @summary Check if image is a flyer
+   * @param request Express request with uploaded image
+   * @returns Whether the image is identified as a flyer
+   */
+  @Post('check-flyer')
+  @Middlewares(aiUploadLimiter)
+  @SuccessResponse(200, 'Flyer check completed')
+  @Response<ErrorResponse>(400, 'Image file is required')
+  public async checkFlyer(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<FlyerCheckResponse>> {
+    const file = request.file as Express.Multer.File | undefined;
+
+    if (!file) {
+      this.setStatus(400);
+      throw new Error('Image file is required.');
+    }
+
+    try {
+      request.log.info(`Server-side flyer check for file: ${file.originalname}`);
+      // Stubbed response - actual AI implementation would go here
+      return this.success({ is_flyer: true });
+    } finally {
+      await cleanupUploadedFile(file);
+    }
+  }
+
+  /**
+   * Extract address from image.
+   *
+   * Extracts store address information from a flyer image using AI.
+   *
+   * @summary Extract address from image
+   * @param request Express request with uploaded image
+   * @returns Extracted address information
+   */
+  @Post('extract-address')
+  @Middlewares(aiUploadLimiter)
+  @SuccessResponse(200, 'Address extraction completed')
+  @Response<ErrorResponse>(400, 'Image file is required')
+  public async extractAddress(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ExtractAddressResponse>> {
+    const file = request.file as Express.Multer.File | undefined;
+
+    if (!file) {
+      this.setStatus(400);
+      throw new Error('Image file is required.');
+    }
+
+    try {
+      request.log.info(`Server-side address extraction for file: ${file.originalname}`);
+      // Stubbed response - actual AI implementation would go here
+      return this.success({ address: 'not identified' });
+    } finally {
+      await cleanupUploadedFile(file);
+    }
+  }
+
+  /**
+   * Extract store logo.
+   *
+   * Extracts the store logo from flyer images using AI.
+   *
+   * @summary Extract store logo
+   * @param request Express request with uploaded images
+   * @returns Extracted logo as base64 string
+   */
+  @Post('extract-logo')
+  @Middlewares(aiUploadLimiter)
+  @SuccessResponse(200, 'Logo extraction completed')
+  @Response<ErrorResponse>(400, 'Image files are required')
+  public async extractLogo(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ExtractLogoResponse>> {
+    const files = request.files as Express.Multer.File[] | undefined;
+
+    if (!files || !Array.isArray(files) || files.length === 0) {
+      this.setStatus(400);
+      throw new Error('Image files are required.');
+    }
+
+    try {
+      request.log.info(`Server-side logo extraction for ${files.length} image(s).`);
+      // Stubbed response - actual AI implementation would go here
+      return this.success({ store_logo_base_64: null });
+    } finally {
+      await cleanupUploadedFiles(files);
+    }
+  }
+
+  /**
+   * Rescan area of image.
+   *
+   * Performs a targeted AI scan on a specific area of an image.
+   * Useful for re-extracting data from poorly recognized regions.
+   *
+   * @summary Rescan area of image
+   * @param request Express request with uploaded image
+   * @param cropArea JSON string with x, y, width, height coordinates
+   * @param extractionType Type of data to extract (store_name, dates, item_details)
+   * @returns Extracted text from the cropped area
+   */
+  @Post('rescan-area')
+  @Security('bearerAuth')
+  @Middlewares(aiUploadLimiter)
+  @SuccessResponse(200, 'Rescan completed')
+  @Response<ErrorResponse>(400, 'Image file is required or invalid cropArea')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async rescanArea(
+    @Request() request: ExpressRequest,
+    @FormField() cropArea: string,
+    @FormField() extractionType: ExtractionType,
+  ): Promise<SuccessResponseType<RescanAreaResponse>> {
+    const file = request.file as Express.Multer.File | undefined;
+
+    if (!file) {
+      this.setStatus(400);
+      throw new Error('Image file is required.');
+    }
+
+    try {
+      // Parse and validate cropArea
+      const parsedCropArea = parseCropArea(cropArea);
+
+      request.log.debug(
+        { extractionType, cropArea: parsedCropArea, filename: file.originalname },
+        'Rescan area requested',
+      );
+
+      const result = await aiService.extractTextFromImageArea(
+        file.path,
+        file.mimetype,
+        parsedCropArea,
+        extractionType,
+        request.log,
+      );
+
+      return this.success(result);
+    } finally {
+      await cleanupUploadedFile(file);
+    }
+  }
+
+  // ==========================================================================
+  // AI INSIGHTS ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get quick insights.
+   *
+   * Get AI-generated quick insights about flyer items.
+   * Provides brief recommendations and highlights.
+   *
+   * @summary Get quick insights
+   * @param request Express request for logging
+   * @param body Items to analyze
+   * @returns AI-generated quick insights
+   */
+  @Post('quick-insights')
+  @Security('bearerAuth')
+  @Middlewares(aiGenerationLimiter)
+  @SuccessResponse(200, 'Quick insights generated')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async getQuickInsights(
+    @Request() request: ExpressRequest,
+    @Body() body: InsightsRequest,
+  ): Promise<SuccessResponseType<TextResponse>> {
+    request.log.info(`Server-side quick insights requested for ${body.items.length} items.`);
+    // Stubbed response - actual AI implementation would go here
+    return this.success({ text: 'This is a server-generated quick insight: buy the cheap stuff!' });
+  }
+
+  /**
+   * Get deep dive analysis.
+   *
+   * Get detailed AI-generated analysis about flyer items.
+   * Provides comprehensive information including nutritional value,
+   * price history, and recommendations.
+   *
+   * @summary Get deep dive analysis
+   * @param request Express request for logging
+   * @param body Items to analyze
+   * @returns Detailed AI analysis
+   */
+  @Post('deep-dive')
+  @Security('bearerAuth')
+  @Middlewares(aiGenerationLimiter)
+  @SuccessResponse(200, 'Deep dive analysis generated')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async getDeepDive(
+    @Request() request: ExpressRequest,
+    @Body() body: InsightsRequest,
+  ): Promise<SuccessResponseType<TextResponse>> {
+    request.log.info(`Server-side deep dive requested for ${body.items.length} items.`);
+    // Stubbed response - actual AI implementation would go here
+    return this.success({
+      text: 'This is a server-generated deep dive analysis. It is very detailed.',
+    });
+  }
+
+  /**
+   * Search web for information.
+   *
+   * Search the web for product or deal information using AI.
+   *
+   * @summary Search web for information
+   * @param request Express request for logging
+   * @param body Search query
+   * @returns Search results with sources
+   */
+  @Post('search-web')
+  @Security('bearerAuth')
+  @Middlewares(aiGenerationLimiter)
+  @SuccessResponse(200, 'Web search completed')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async searchWeb(
+    @Request() request: ExpressRequest,
+    @Body() body: SearchWebRequest,
+  ): Promise<SuccessResponseType<SearchWebResponse>> {
+    request.log.info(`Server-side web search requested for query: ${body.query}`);
+    // Stubbed response - actual AI implementation would go here
+    return this.success({ text: 'The web says this is good.', sources: [] });
+  }
+
+  /**
+   * Compare prices across stores.
+   *
+   * Compare prices for items across different stores using AI.
+   *
+   * @summary Compare prices across stores
+   * @param request Express request for logging
+   * @param body Items to compare
+   * @returns Price comparison results
+   */
+  @Post('compare-prices')
+  @Security('bearerAuth')
+  @Middlewares(aiGenerationLimiter)
+  @SuccessResponse(200, 'Price comparison completed')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async comparePrices(
+    @Request() request: ExpressRequest,
+    @Body() body: ComparePricesRequest,
+  ): Promise<SuccessResponseType<SearchWebResponse>> {
+    request.log.info(`Server-side price comparison requested for ${body.items.length} items.`);
+    // Stubbed response - actual AI implementation would go here
+    return this.success({
+      text: 'This is a server-generated price comparison. Milk is cheaper at SuperMart.',
+      sources: [],
+    });
+  }
+
+  /**
+   * Plan shopping trip.
+   *
+   * Plan an optimized shopping trip to a store based on items and user location.
+   * Uses Google Maps integration for directions and nearby store suggestions.
+   *
+   * @summary Plan shopping trip
+   * @param request Express request for logging
+   * @param body Trip planning parameters
+   * @returns Trip plan with directions
+   */
+  @Post('plan-trip')
+  @Security('bearerAuth')
+  @Middlewares(aiGenerationLimiter)
+  @SuccessResponse(200, 'Trip plan generated')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(501, 'Feature disabled')
+  public async planTrip(
+    @Request() request: ExpressRequest,
+    @Body() body: PlanTripRequest,
+  ): Promise<SuccessResponseType<PlanTripResponse>> {
+    request.log.debug(
+      { itemCount: body.items.length, storeName: body.store.name },
+      'Trip planning requested.',
+    );
+
+    try {
+      // Note: planTripWithMaps is currently disabled and throws immediately.
+      // The cast is safe since FlyerItemForAnalysis has the same shape as FlyerItem.
+      const result = await aiService.planTripWithMaps(
+        body.items as unknown as FlyerItem[],
+        body.store,
+        body.userLocation as GeolocationCoordinates,
+        request.log,
+      );
+      return this.success(result);
+    } catch (error) {
+      request.log.error({ error }, 'Error in plan-trip endpoint');
+      throw error;
+    }
+  }
+
+  // ==========================================================================
+  // STUBBED FUTURE ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Generate image (not implemented).
+   *
+   * Generate an image from a prompt. Currently not implemented.
+   *
+   * @summary Generate image (not implemented)
+   * @param request Express request for logging
+   * @param body Image generation prompt
+   * @returns 501 Not Implemented
+   */
+  @Post('generate-image')
+  @Security('bearerAuth')
+  @Middlewares(aiGenerationLimiter)
+  @SuccessResponse(501, 'Not implemented')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(501, 'Not implemented')
+  public async generateImage(
+    @Request() request: ExpressRequest,
+    @Body() _body: GenerateImageRequest,
+  ): Promise<ErrorResponse> {
+    request.log.info('Request received for unimplemented endpoint: generate-image');
+    this.setStatus(501);
+    return this.error(
+      ControllerErrorCode.NOT_IMPLEMENTED,
+      'Image generation is not yet implemented.',
+    );
+  }
+
+  /**
+   * Generate speech (not implemented).
+   *
+   * Generate speech from text. Currently not implemented.
+   *
+   * @summary Generate speech (not implemented)
+   * @param request Express request for logging
+   * @param body Text to convert to speech
+   * @returns 501 Not Implemented
+   */
+  @Post('generate-speech')
+  @Security('bearerAuth')
+  @Middlewares(aiGenerationLimiter)
+  @SuccessResponse(501, 'Not implemented')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(501, 'Not implemented')
+  public async generateSpeech(
+    @Request() request: ExpressRequest,
+    @Body() _body: GenerateSpeechRequest,
+  ): Promise<ErrorResponse> {
+    request.log.info('Request received for unimplemented endpoint: generate-speech');
+    this.setStatus(501);
+    return this.error(
+      ControllerErrorCode.NOT_IMPLEMENTED,
+      'Speech generation is not yet implemented.',
+    );
+  }
+}

src/controllers/auth.controller.test.ts

@@ -0,0 +1,482 @@
+// src/controllers/auth.controller.test.ts
+// ============================================================================
+// AUTH CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the AuthController class. These tests verify controller
+// logic in isolation by mocking external dependencies like auth service,
+// passport, and response handling.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest, Response as ExpressResponse } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+// Mock all external dependencies before importing the controller module.
+// ============================================================================
+
+// Mock tsoa decorators and Controller class (required before controller import)
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(_status: number): void {
+      // Mock setStatus
+    }
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+  Middlewares: () => () => {},
+}));
+
+// Mock auth service
+vi.mock('../services/authService', () => ({
+  authService: {
+    registerAndLoginUser: vi.fn(),
+    handleSuccessfulLogin: vi.fn(),
+    resetPassword: vi.fn(),
+    updatePassword: vi.fn(),
+    refreshAccessToken: vi.fn(),
+    logout: vi.fn(),
+  },
+}));
+
+// Mock passport
+vi.mock('../config/passport', () => ({
+  default: {
+    authenticate: vi.fn(),
+  },
+}));
+
+// Mock password strength validation
+vi.mock('../utils/authUtils', () => ({
+  validatePasswordStrength: vi.fn(),
+}));
+
+// Mock rate limiters
+vi.mock('../config/rateLimiters', () => ({
+  loginLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+  registerLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+  forgotPasswordLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+  resetPasswordLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+  refreshTokenLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+  logoutLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
+}));
+
+// Import mocked modules after mock definitions
+import { authService } from '../services/authService';
+import { validatePasswordStrength } from '../utils/authUtils';
+import { AuthController } from './auth.controller';
+
+// Cast mocked modules for type-safe access
+const mockedAuthService = authService as Mocked<typeof authService>;
+const mockedValidatePasswordStrength = validatePasswordStrength as ReturnType<typeof vi.fn>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  const mockRes = {
+    cookie: vi.fn(),
+  } as unknown as ExpressResponse;
+
+  return {
+    body: {},
+    cookies: {},
+    log: createMockLogger(),
+    res: mockRes,
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    avatar_url: null,
+    address_id: null,
+    points: 0,
+    role: 'user' as const,
+    preferences: null,
+    created_by: null,
+    updated_by: null,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+    address: null,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('AuthController', () => {
+  let controller: AuthController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new AuthController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // REGISTRATION TESTS
+  // ==========================================================================
+
+  describe('register()', () => {
+    it('should successfully register a new user', async () => {
+      // Arrange
+      const mockUserProfile = createMockUserProfile();
+      const request = createMockRequest({
+        body: {
+          email: 'test@example.com',
+          password: 'SecurePassword123!',
+          full_name: 'Test User',
+        },
+      });
+
+      mockedValidatePasswordStrength.mockReturnValue({ isValid: true, feedback: '' });
+      mockedAuthService.registerAndLoginUser.mockResolvedValue({
+        newUserProfile: mockUserProfile,
+        accessToken: 'mock-access-token',
+        refreshToken: 'mock-refresh-token',
+      });
+
+      // Act
+      const result = await controller.register(
+        {
+          email: 'test@example.com',
+          password: 'SecurePassword123!',
+          full_name: 'Test User',
+        },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('User registered successfully!');
+        expect(result.data.userprofile.user.email).toBe('test@example.com');
+        expect(result.data.token).toBe('mock-access-token');
+      }
+      expect(mockedAuthService.registerAndLoginUser).toHaveBeenCalledWith(
+        'test@example.com',
+        'SecurePassword123!',
+        'Test User',
+        undefined,
+        expect.anything(),
+      );
+    });
+
+    it('should reject registration with weak password', async () => {
+      // Arrange
+      const request = createMockRequest({
+        body: {
+          email: 'test@example.com',
+          password: 'weak',
+        },
+      });
+
+      mockedValidatePasswordStrength.mockReturnValue({
+        isValid: false,
+        feedback: 'Password must be at least 8 characters long.',
+      });
+
+      // Act & Assert
+      await expect(
+        controller.register(
+          {
+            email: 'test@example.com',
+            password: 'weak',
+          },
+          request,
+        ),
+      ).rejects.toThrow('Password must be at least 8 characters long.');
+
+      expect(mockedAuthService.registerAndLoginUser).not.toHaveBeenCalled();
+    });
+
+    it('should sanitize email input (trim and lowercase)', async () => {
+      // Arrange
+      const mockUserProfile = createMockUserProfile();
+      const request = createMockRequest({
+        body: {
+          email: '  TEST@EXAMPLE.COM  ',
+          password: 'SecurePassword123!',
+        },
+      });
+
+      mockedValidatePasswordStrength.mockReturnValue({ isValid: true, feedback: '' });
+      mockedAuthService.registerAndLoginUser.mockResolvedValue({
+        newUserProfile: mockUserProfile,
+        accessToken: 'mock-access-token',
+        refreshToken: 'mock-refresh-token',
+      });
+
+      // Act
+      await controller.register(
+        {
+          email: '  TEST@EXAMPLE.COM  ',
+          password: 'SecurePassword123!',
+        },
+        request,
+      );
+
+      // Assert
+      expect(mockedAuthService.registerAndLoginUser).toHaveBeenCalledWith(
+        'test@example.com',
+        'SecurePassword123!',
+        undefined,
+        undefined,
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // PASSWORD RESET TESTS
+  // ==========================================================================
+
+  describe('forgotPassword()', () => {
+    it('should return generic message regardless of email existence', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAuthService.resetPassword.mockResolvedValue('mock-reset-token');
+
+      // Act
+      const result = await controller.forgotPassword({ email: 'test@example.com' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe(
+          'If an account with that email exists, a password reset link has been sent.',
+        );
+      }
+      expect(mockedAuthService.resetPassword).toHaveBeenCalledWith(
+        'test@example.com',
+        expect.anything(),
+      );
+    });
+
+    it('should return same message when email does not exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAuthService.resetPassword.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.forgotPassword({ email: 'nonexistent@example.com' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe(
+          'If an account with that email exists, a password reset link has been sent.',
+        );
+      }
+    });
+
+    it('should include token in test environment', async () => {
+      // Arrange
+      const originalEnv = process.env.NODE_ENV;
+      process.env.NODE_ENV = 'test';
+      const request = createMockRequest();
+
+      mockedAuthService.resetPassword.mockResolvedValue('mock-reset-token');
+
+      // Act
+      const result = await controller.forgotPassword({ email: 'test@example.com' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.token).toBe('mock-reset-token');
+      }
+
+      // Cleanup
+      process.env.NODE_ENV = originalEnv;
+    });
+  });
+
+  describe('resetPassword()', () => {
+    it('should successfully reset password with valid token', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAuthService.updatePassword.mockResolvedValue(true);
+
+      // Act
+      const result = await controller.resetPassword(
+        { token: 'valid-reset-token', newPassword: 'NewSecurePassword123!' },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Password has been reset successfully.');
+      }
+      expect(mockedAuthService.updatePassword).toHaveBeenCalledWith(
+        'valid-reset-token',
+        'NewSecurePassword123!',
+        expect.anything(),
+      );
+    });
+
+    it('should reject reset with invalid token', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAuthService.updatePassword.mockResolvedValue(null);
+
+      // Act & Assert
+      await expect(
+        controller.resetPassword(
+          { token: 'invalid-token', newPassword: 'NewSecurePassword123!' },
+          request,
+        ),
+      ).rejects.toThrow('Invalid or expired password reset token.');
+    });
+  });
+
+  // ==========================================================================
+  // TOKEN MANAGEMENT TESTS
+  // ==========================================================================
+
+  describe('refreshToken()', () => {
+    it('should successfully refresh access token', async () => {
+      // Arrange
+      const request = createMockRequest({
+        cookies: { refreshToken: 'valid-refresh-token' },
+      });
+
+      mockedAuthService.refreshAccessToken.mockResolvedValue({
+        accessToken: 'new-access-token',
+      });
+
+      // Act
+      const result = await controller.refreshToken(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.token).toBe('new-access-token');
+      }
+      expect(mockedAuthService.refreshAccessToken).toHaveBeenCalledWith(
+        'valid-refresh-token',
+        expect.anything(),
+      );
+    });
+
+    it('should reject when refresh token cookie is missing', async () => {
+      // Arrange
+      const request = createMockRequest({ cookies: {} });
+
+      // Act & Assert
+      await expect(controller.refreshToken(request)).rejects.toThrow('Refresh token not found.');
+    });
+
+    it('should reject when refresh token is invalid', async () => {
+      // Arrange
+      const request = createMockRequest({
+        cookies: { refreshToken: 'invalid-token' },
+      });
+
+      mockedAuthService.refreshAccessToken.mockResolvedValue(null);
+
+      // Act & Assert
+      await expect(controller.refreshToken(request)).rejects.toThrow(
+        'Invalid or expired refresh token.',
+      );
+    });
+  });
+
+  describe('logout()', () => {
+    it('should successfully logout and clear refresh token cookie', async () => {
+      // Arrange
+      const mockCookie = vi.fn();
+      const request = createMockRequest({
+        cookies: { refreshToken: 'valid-refresh-token' },
+        res: { cookie: mockCookie } as unknown as ExpressResponse,
+      });
+
+      mockedAuthService.logout.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.logout(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Logged out successfully.');
+      }
+      expect(mockCookie).toHaveBeenCalledWith(
+        'refreshToken',
+        '',
+        expect.objectContaining({ maxAge: 0, httpOnly: true }),
+      );
+    });
+
+    it('should succeed even without refresh token cookie', async () => {
+      // Arrange
+      const mockCookie = vi.fn();
+      const request = createMockRequest({
+        cookies: {},
+        res: { cookie: mockCookie } as unknown as ExpressResponse,
+      });
+
+      // Act
+      const result = await controller.logout(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Logged out successfully.');
+      }
+      expect(mockedAuthService.logout).not.toHaveBeenCalled();
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const request = createMockRequest({ cookies: {} });
+      const mockCookie = vi.fn();
+      (request.res as ExpressResponse).cookie = mockCookie;
+
+      // Act
+      const result = await controller.logout(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+  });
+});

src/controllers/auth.controller.ts

@@ -0,0 +1,827 @@
+// src/controllers/auth.controller.ts
+// ============================================================================
+// AUTH CONTROLLER
+// ============================================================================
+// Handles user authentication and authorization endpoints including:
+// - User registration and login
+// - Password reset flow (forgot-password, reset-password)
+// - JWT token refresh and logout
+// - OAuth initiation (Google, GitHub) - Note: callbacks handled via Express middleware
+//
+// This controller implements the authentication API following ADR-028 (API Response Standards)
+// and integrates with the existing passport-based authentication system.
+// ============================================================================
+
+import {
+  Route,
+  Tags,
+  Post,
+  Get,
+  Body,
+  Request,
+  SuccessResponse,
+  Response,
+  Middlewares,
+} from 'tsoa';
+import type { Request as ExpressRequest, Response as ExpressResponse } from 'express';
+import passport from '../config/passport';
+import {
+  BaseController,
+  SuccessResponse as SuccessResponseType,
+  ErrorResponse,
+} from './base.controller';
+import { authService } from '../services/authService';
+import { UniqueConstraintError, ValidationError } from '../services/db/errors.db';
+import type { UserProfile } from '../types';
+import { validatePasswordStrength } from '../utils/authUtils';
+import {
+  loginLimiter,
+  registerLimiter,
+  forgotPasswordLimiter,
+  resetPasswordLimiter,
+  refreshTokenLimiter,
+  logoutLimiter,
+} from '../config/rateLimiters';
+import type { AddressDto, UserProfileDto } from '../dtos/common.dto';
+
+/**
+ * User registration request body.
+ */
+interface RegisterRequest {
+  /**
+   * User's email address.
+   * @format email
+   * @example "user@example.com"
+   */
+  email: string;
+
+  /**
+   * User's password. Must be at least 8 characters with good entropy.
+   * @minLength 8
+   * @example "SecurePassword123!"
+   */
+  password: string;
+
+  /**
+   * User's full name (optional).
+   * @example "John Doe"
+   */
+  full_name?: string;
+
+  /**
+   * URL to user's avatar image (optional).
+   * @format uri
+   */
+  avatar_url?: string;
+}
+
+/**
+ * Successful registration response data.
+ */
+interface RegisterResponseData {
+  /** Success message */
+  message: string;
+  /** The created user's profile */
+  userprofile: UserProfileDto;
+  /** JWT access token */
+  token: string;
+}
+
+/**
+ * User login request body.
+ */
+interface LoginRequest {
+  /**
+   * User's email address.
+   * @format email
+   * @example "user@example.com"
+   */
+  email: string;
+
+  /**
+   * User's password.
+   * @example "SecurePassword123!"
+   */
+  password: string;
+
+  /**
+   * If true, refresh token lasts 30 days instead of session-only.
+   */
+  rememberMe?: boolean;
+}
+
+/**
+ * Successful login response data.
+ */
+interface LoginResponseData {
+  /** The authenticated user's profile */
+  userprofile: UserProfileDto;
+  /** JWT access token */
+  token: string;
+}
+
+/**
+ * Forgot password request body.
+ */
+interface ForgotPasswordRequest {
+  /**
+   * Email address of the account to reset.
+   * @format email
+   * @example "user@example.com"
+   */
+  email: string;
+}
+
+/**
+ * Forgot password response data.
+ */
+interface ForgotPasswordResponseData {
+  /** Generic success message (same for existing and non-existing emails for security) */
+  message: string;
+  /** Reset token (only included in test environment for testability) */
+  token?: string;
+}
+
+/**
+ * Reset password request body.
+ */
+interface ResetPasswordRequest {
+  /**
+   * Password reset token from email.
+   */
+  token: string;
+
+  /**
+   * New password. Must be at least 8 characters with good entropy.
+   * @minLength 8
+   */
+  newPassword: string;
+}
+
+/**
+ * Logout response data.
+ */
+interface LogoutResponseData {
+  /** Success message */
+  message: string;
+}
+
+/**
+ * Token refresh response data.
+ */
+interface RefreshTokenResponseData {
+  /** New JWT access token */
+  token: string;
+}
+
+/**
+ * Message response data.
+ */
+interface MessageResponseData {
+  /** Success message */
+  message: string;
+}
+
+// ============================================================================
+// CUSTOM ERROR CLASSES
+// ============================================================================
+
+/**
+ * Authentication error for login failures and related issues.
+ */
+class AuthenticationError extends Error {
+  public status: number;
+
+  constructor(message: string, status: number = 401) {
+    super(message);
+    this.name = 'AuthenticationError';
+    this.status = status;
+  }
+}
+
+// ============================================================================
+// DTO CONVERSION HELPERS
+// ============================================================================
+
+/**
+ * Converts a UserProfile to a UserProfileDto.
+ *
+ * This conversion is necessary because UserProfile contains Address which
+ * contains GeoJSONPoint with tuple type coordinates: [number, number].
+ * tsoa cannot serialize tuples, so we flatten to separate lat/lng fields.
+ *
+ * @param userProfile The UserProfile from the service layer
+ * @returns A UserProfileDto safe for tsoa serialization
+ */
+function toUserProfileDto(userProfile: UserProfile): UserProfileDto {
+  const addressDto: AddressDto | null = userProfile.address
+    ? {
+        address_id: userProfile.address.address_id,
+        address_line_1: userProfile.address.address_line_1,
+        address_line_2: userProfile.address.address_line_2,
+        city: userProfile.address.city,
+        province_state: userProfile.address.province_state,
+        postal_code: userProfile.address.postal_code,
+        country: userProfile.address.country,
+        latitude:
+          userProfile.address.latitude ?? userProfile.address.location?.coordinates[1] ?? null,
+        longitude:
+          userProfile.address.longitude ?? userProfile.address.location?.coordinates[0] ?? null,
+        created_at: userProfile.address.created_at,
+        updated_at: userProfile.address.updated_at,
+      }
+    : null;
+
+  return {
+    full_name: userProfile.full_name,
+    avatar_url: userProfile.avatar_url,
+    address_id: userProfile.address_id,
+    points: userProfile.points,
+    role: userProfile.role,
+    preferences: userProfile.preferences,
+    created_by: userProfile.created_by,
+    updated_by: userProfile.updated_by,
+    created_at: userProfile.created_at,
+    updated_at: userProfile.updated_at,
+    user: {
+      user_id: userProfile.user.user_id,
+      email: userProfile.user.email,
+      created_at: userProfile.user.created_at,
+      updated_at: userProfile.user.updated_at,
+    },
+    address: addressDto,
+  };
+}
+
+// ============================================================================
+// AUTH CONTROLLER
+// ============================================================================
+
+/**
+ * Authentication controller handling user registration, login, password reset,
+ * and token management.
+ *
+ * OAuth endpoints (Google, GitHub) use passport middleware for redirect-based
+ * authentication flows and are handled differently than standard JSON endpoints.
+ */
+@Route('auth')
+@Tags('Auth')
+export class AuthController extends BaseController {
+  // ==========================================================================
+  // REGISTRATION
+  // ==========================================================================
+
+  /**
+   * Register a new user account.
+   *
+   * Creates a new user with the provided credentials and returns authentication tokens.
+   * The password must be at least 8 characters with good entropy (mix of characters).
+   *
+   * @summary Register a new user
+   * @param requestBody User registration data
+   * @param request Express request object (for logging and cookies)
+   * @returns User profile and JWT token on successful registration
+   */
+  @Post('register')
+  @Middlewares(registerLimiter)
+  @SuccessResponse(201, 'User registered successfully')
+  @Response<ErrorResponse>(400, 'Validation error (weak password)')
+  @Response<ErrorResponse>(409, 'Email already registered')
+  @Response<ErrorResponse>(429, 'Too many registration attempts')
+  public async register(
+    @Body() requestBody: RegisterRequest,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<RegisterResponseData>> {
+    const { email, password, full_name, avatar_url } = this.sanitizeRegisterInput(requestBody);
+    const reqLog = request.log;
+
+    // Validate password strength
+    const strength = validatePasswordStrength(password);
+    if (!strength.isValid) {
+      throw new ValidationError([], strength.feedback);
+    }
+
+    try {
+      const { newUserProfile, accessToken, refreshToken } = await authService.registerAndLoginUser(
+        email,
+        password,
+        full_name,
+        avatar_url,
+        reqLog,
+      );
+
+      // Set refresh token as httpOnly cookie
+      this.setRefreshTokenCookie(request.res!, refreshToken, false);
+
+      this.setStatus(201);
+      return this.success({
+        message: 'User registered successfully!',
+        userprofile: toUserProfileDto(newUserProfile),
+        token: accessToken,
+      });
+    } catch (error: unknown) {
+      if (error instanceof UniqueConstraintError) {
+        this.setStatus(409);
+        throw error;
+      }
+      reqLog.error({ error }, `User registration route failed for email: ${email}.`);
+      throw error;
+    }
+  }
+
+  // ==========================================================================
+  // LOGIN
+  // ==========================================================================
+
+  /**
+   * Login with email and password.
+   *
+   * Authenticates user credentials via the local passport strategy and returns JWT tokens.
+   * Failed login attempts are tracked for account lockout protection.
+   *
+   * @summary Login with email and password
+   * @param requestBody Login credentials
+   * @param request Express request object
+   * @returns User profile and JWT token on successful authentication
+   */
+  @Post('login')
+  @Middlewares(loginLimiter)
+  @SuccessResponse(200, 'Login successful')
+  @Response<ErrorResponse>(401, 'Invalid credentials or account locked')
+  @Response<ErrorResponse>(429, 'Too many login attempts')
+  public async login(
+    @Body() requestBody: LoginRequest,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<LoginResponseData>> {
+    const { email, password, rememberMe } = this.sanitizeLoginInput(requestBody);
+    const reqLog = request.log;
+
+    return new Promise((resolve, reject) => {
+      // Attach sanitized email to request body for passport
+      request.body.email = email;
+      request.body.password = password;
+
+      passport.authenticate(
+        'local',
+        { session: false },
+        async (err: Error | null, user: Express.User | false, info: { message: string }) => {
+          reqLog.debug(`[API /login] Received login request for email: ${email}`);
+
+          if (err) {
+            reqLog.error({ err }, '[API /login] Passport reported an error.');
+            return reject(err);
+          }
+
+          if (!user) {
+            reqLog.warn({ info }, '[API /login] Passport reported NO USER found.');
+            const authError = new AuthenticationError(info?.message || 'Login failed');
+            return reject(authError);
+          }
+
+          reqLog.info(
+            { userId: (user as UserProfile).user?.user_id },
+            '[API /login] User authenticated.',
+          );
+
+          try {
+            const userProfile = user as UserProfile;
+            const { accessToken, refreshToken } = await authService.handleSuccessfulLogin(
+              userProfile,
+              reqLog,
+            );
+            reqLog.info(`JWT and refresh token issued for user: ${userProfile.user.email}`);
+
+            // Set refresh token cookie
+            this.setRefreshTokenCookie(request.res!, refreshToken, rememberMe || false);
+
+            resolve(
+              this.success({ userprofile: toUserProfileDto(userProfile), token: accessToken }),
+            );
+          } catch (tokenErr) {
+            const email = (user as UserProfile)?.user?.email || request.body.email;
+            reqLog.error({ error: tokenErr }, `Failed to process login for user: ${email}`);
+            reject(tokenErr);
+          }
+        },
+      )(request, request.res!, (err: unknown) => {
+        if (err) reject(err);
+      });
+    });
+  }
+
+  // ==========================================================================
+  // PASSWORD RESET FLOW
+  // ==========================================================================
+
+  /**
+   * Request a password reset.
+   *
+   * Sends a password reset email if the account exists. For security, always returns
+   * the same response whether the email exists or not to prevent email enumeration.
+   *
+   * @summary Request password reset email
+   * @param requestBody Email address for password reset
+   * @param request Express request object
+   * @returns Generic success message (same for existing and non-existing emails)
+   */
+  @Post('forgot-password')
+  @Middlewares(forgotPasswordLimiter)
+  @SuccessResponse(200, 'Request processed')
+  @Response<ErrorResponse>(429, 'Too many password reset requests')
+  public async forgotPassword(
+    @Body() requestBody: ForgotPasswordRequest,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ForgotPasswordResponseData>> {
+    const email = this.sanitizeEmail(requestBody.email);
+    const reqLog = request.log;
+
+    try {
+      const token = await authService.resetPassword(email, reqLog);
+
+      // Response payload - token only included in test environment for testability
+      const responsePayload: ForgotPasswordResponseData = {
+        message: 'If an account with that email exists, a password reset link has been sent.',
+      };
+
+      if (process.env.NODE_ENV === 'test' && token) {
+        responsePayload.token = token;
+      }
+
+      return this.success(responsePayload);
+    } catch (error) {
+      reqLog.error({ error }, `An error occurred during /forgot-password for email: ${email}`);
+      throw error;
+    }
+  }
+
+  /**
+   * Reset password with token.
+   *
+   * Resets the user's password using a valid reset token from the forgot-password email.
+   * The token is single-use and expires after 1 hour.
+   *
+   * @summary Reset password with token
+   * @param requestBody Reset token and new password
+   * @param request Express request object
+   * @returns Success message on password reset
+   */
+  @Post('reset-password')
+  @Middlewares(resetPasswordLimiter)
+  @SuccessResponse(200, 'Password reset successful')
+  @Response<ErrorResponse>(400, 'Invalid or expired token, or weak password')
+  @Response<ErrorResponse>(429, 'Too many reset attempts')
+  public async resetPassword(
+    @Body() requestBody: ResetPasswordRequest,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<MessageResponseData>> {
+    const { token, newPassword } = requestBody;
+    const reqLog = request.log;
+
+    try {
+      const resetSuccessful = await authService.updatePassword(token, newPassword, reqLog);
+
+      if (!resetSuccessful) {
+        this.setStatus(400);
+        throw new ValidationError([], 'Invalid or expired password reset token.');
+      }
+
+      return this.success({ message: 'Password has been reset successfully.' });
+    } catch (error) {
+      reqLog.error({ error }, 'An error occurred during password reset.');
+      throw error;
+    }
+  }
+
+  // ==========================================================================
+  // TOKEN MANAGEMENT
+  // ==========================================================================
+
+  /**
+   * Refresh access token.
+   *
+   * Uses the refresh token cookie to issue a new access token.
+   * The refresh token itself is not rotated to allow multiple active sessions.
+   *
+   * @summary Refresh access token
+   * @param request Express request object (contains refresh token cookie)
+   * @returns New JWT access token
+   */
+  @Post('refresh-token')
+  @Middlewares(refreshTokenLimiter)
+  @SuccessResponse(200, 'New access token issued')
+  @Response<ErrorResponse>(401, 'Refresh token not found')
+  @Response<ErrorResponse>(403, 'Invalid or expired refresh token')
+  @Response<ErrorResponse>(429, 'Too many refresh attempts')
+  public async refreshToken(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<RefreshTokenResponseData>> {
+    const refreshToken = request.cookies?.refreshToken;
+    const reqLog = request.log;
+
+    if (!refreshToken) {
+      this.setStatus(401);
+      throw new AuthenticationError('Refresh token not found.');
+    }
+
+    try {
+      const result = await authService.refreshAccessToken(refreshToken, reqLog);
+
+      if (!result) {
+        this.setStatus(403);
+        throw new AuthenticationError('Invalid or expired refresh token.', 403);
+      }
+
+      return this.success({ token: result.accessToken });
+    } catch (error) {
+      if (error instanceof AuthenticationError) {
+        throw error;
+      }
+      reqLog.error({ error }, 'An error occurred during /refresh-token.');
+      throw error;
+    }
+  }
+
+  /**
+   * Logout user.
+   *
+   * Invalidates the refresh token and clears the cookie.
+   * The access token will remain valid until it expires (15 minutes).
+   *
+   * @summary Logout user
+   * @param request Express request object
+   * @returns Success message
+   */
+  @Post('logout')
+  @Middlewares(logoutLimiter)
+  @SuccessResponse(200, 'Logged out successfully')
+  @Response<ErrorResponse>(429, 'Too many logout attempts')
+  public async logout(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<LogoutResponseData>> {
+    const refreshToken = request.cookies?.refreshToken;
+    const reqLog = request.log;
+
+    if (refreshToken) {
+      // Invalidate the token in the database (fire and forget)
+      authService.logout(refreshToken, reqLog).catch((err: Error) => {
+        reqLog.error({ error: err }, 'Logout token invalidation failed in background.');
+      });
+    }
+
+    // Clear the refresh token cookie
+    this.clearRefreshTokenCookie(request.res!);
+
+    return this.success({ message: 'Logged out successfully.' });
+  }
+
+  // ==========================================================================
+  // OAUTH INITIATION ENDPOINTS
+  // ==========================================================================
+  // Note: OAuth callback endpoints are handled by Express middleware due to
+  // their redirect-based nature. These initiation endpoints redirect to the
+  // OAuth provider and are documented here for completeness.
+  //
+  // The actual callbacks (/auth/google/callback, /auth/github/callback) remain
+  // in the Express routes file (auth.routes.ts) because tsoa controllers are
+  // designed for JSON APIs, not redirect-based OAuth flows.
+  // ==========================================================================
+
+  /**
+   * Initiate Google OAuth login.
+   *
+   * Redirects to Google for authentication. After successful authentication,
+   * Google redirects back to /auth/google/callback with an authorization code.
+   *
+   * Note: This endpoint performs a redirect, not a JSON response.
+   *
+   * @summary Initiate Google OAuth
+   * @param request Express request object
+   */
+  @Get('google')
+  @Response(302, 'Redirects to Google OAuth consent screen')
+  public async googleAuth(@Request() request: ExpressRequest): Promise<void> {
+    return new Promise((resolve, reject) => {
+      passport.authenticate('google', { session: false })(request, request.res!, (err: unknown) => {
+        if (err) {
+          reject(err);
+        } else {
+          resolve();
+        }
+      });
+    });
+  }
+
+  /**
+   * Google OAuth callback.
+   *
+   * Handles the callback from Google after user authentication.
+   * On success, redirects to the frontend with an access token in the query string.
+   * On failure, redirects to the frontend with an error parameter.
+   *
+   * Note: This endpoint performs a redirect, not a JSON response.
+   *
+   * @summary Google OAuth callback
+   * @param request Express request object
+   */
+  @Get('google/callback')
+  @Response(302, 'Redirects to frontend with token or error')
+  public async googleAuthCallback(@Request() request: ExpressRequest): Promise<void> {
+    return new Promise((resolve, reject) => {
+      passport.authenticate(
+        'google',
+        { session: false, failureRedirect: '/?error=google_auth_failed' },
+        async (err: Error | null, user: Express.User | false) => {
+          if (err) {
+            request.log.error({ error: err }, 'Google OAuth authentication error');
+            return reject(err);
+          }
+
+          await this.handleOAuthCallback(
+            'google',
+            user as UserProfile | false,
+            request,
+            request.res!,
+          );
+          resolve();
+        },
+      )(request, request.res!, (err: unknown) => {
+        if (err) reject(err);
+      });
+    });
+  }
+
+  /**
+   * Initiate GitHub OAuth login.
+   *
+   * Redirects to GitHub for authentication. After successful authentication,
+   * GitHub redirects back to /auth/github/callback with an authorization code.
+   *
+   * Note: This endpoint performs a redirect, not a JSON response.
+   *
+   * @summary Initiate GitHub OAuth
+   * @param request Express request object
+   */
+  @Get('github')
+  @Response(302, 'Redirects to GitHub OAuth consent screen')
+  public async githubAuth(@Request() request: ExpressRequest): Promise<void> {
+    return new Promise((resolve, reject) => {
+      passport.authenticate('github', { session: false })(request, request.res!, (err: unknown) => {
+        if (err) {
+          reject(err);
+        } else {
+          resolve();
+        }
+      });
+    });
+  }
+
+  /**
+   * GitHub OAuth callback.
+   *
+   * Handles the callback from GitHub after user authentication.
+   * On success, redirects to the frontend with an access token in the query string.
+   * On failure, redirects to the frontend with an error parameter.
+   *
+   * Note: This endpoint performs a redirect, not a JSON response.
+   *
+   * @summary GitHub OAuth callback
+   * @param request Express request object
+   */
+  @Get('github/callback')
+  @Response(302, 'Redirects to frontend with token or error')
+  public async githubAuthCallback(@Request() request: ExpressRequest): Promise<void> {
+    return new Promise((resolve, reject) => {
+      passport.authenticate(
+        'github',
+        { session: false, failureRedirect: '/?error=github_auth_failed' },
+        async (err: Error | null, user: Express.User | false) => {
+          if (err) {
+            request.log.error({ error: err }, 'GitHub OAuth authentication error');
+            return reject(err);
+          }
+
+          await this.handleOAuthCallback(
+            'github',
+            user as UserProfile | false,
+            request,
+            request.res!,
+          );
+          resolve();
+        },
+      )(request, request.res!, (err: unknown) => {
+        if (err) reject(err);
+      });
+    });
+  }
+
+  // ==========================================================================
+  // PRIVATE HELPER METHODS
+  // ==========================================================================
+
+  /**
+   * Sanitizes and normalizes email input.
+   * Trims whitespace and converts to lowercase.
+   */
+  private sanitizeEmail(email: string): string {
+    return email.trim().toLowerCase();
+  }
+
+  /**
+   * Sanitizes registration input by trimming and normalizing values.
+   */
+  private sanitizeRegisterInput(input: RegisterRequest): RegisterRequest {
+    return {
+      email: this.sanitizeEmail(input.email),
+      password: input.password.trim(),
+      full_name: input.full_name?.trim() || undefined,
+      avatar_url: input.avatar_url?.trim() || undefined,
+    };
+  }
+
+  /**
+   * Sanitizes login input by trimming and normalizing values.
+   */
+  private sanitizeLoginInput(input: LoginRequest): LoginRequest {
+    return {
+      email: this.sanitizeEmail(input.email),
+      password: input.password,
+      rememberMe: input.rememberMe,
+    };
+  }
+
+  /**
+   * Sets the refresh token as an httpOnly cookie.
+   *
+   * @param res Express response object
+   * @param refreshToken The refresh token to set
+   * @param rememberMe If true, cookie persists for 30 days; otherwise 7 days
+   */
+  private setRefreshTokenCookie(
+    res: ExpressResponse,
+    refreshToken: string,
+    rememberMe: boolean,
+  ): void {
+    const maxAge = rememberMe
+      ? 30 * 24 * 60 * 60 * 1000 // 30 days
+      : 7 * 24 * 60 * 60 * 1000; // 7 days
+
+    res.cookie('refreshToken', refreshToken, {
+      httpOnly: true,
+      secure: process.env.NODE_ENV === 'production',
+      maxAge,
+    });
+  }
+
+  /**
+   * Clears the refresh token cookie by setting it to expire immediately.
+   *
+   * @param res Express response object
+   */
+  private clearRefreshTokenCookie(res: ExpressResponse): void {
+    res.cookie('refreshToken', '', {
+      httpOnly: true,
+      maxAge: 0,
+      secure: process.env.NODE_ENV === 'production',
+    });
+  }
+
+  /**
+   * Handles OAuth callback by generating tokens and redirecting to frontend.
+   *
+   * @param provider OAuth provider name ('google' or 'github')
+   * @param user Authenticated user profile or false if authentication failed
+   * @param request Express request object
+   * @param res Express response object
+   */
+  private async handleOAuthCallback(
+    provider: 'google' | 'github',
+    user: UserProfile | false,
+    request: ExpressRequest,
+    res: ExpressResponse,
+  ): Promise<void> {
+    const reqLog = request.log;
+
+    if (!user || !user.user) {
+      reqLog.error('OAuth callback received but no user profile found');
+      res.redirect(`${process.env.FRONTEND_URL}/?error=auth_failed`);
+      return;
+    }
+
+    try {
+      const { accessToken, refreshToken } = await authService.handleSuccessfulLogin(user, reqLog);
+
+      res.cookie('refreshToken', refreshToken, {
+        httpOnly: true,
+        secure: process.env.NODE_ENV === 'production',
+        maxAge: 30 * 24 * 60 * 60 * 1000, // 30 days
+      });
+
+      // Redirect to frontend with provider-specific token parameter
+      const tokenParam = provider === 'google' ? 'googleAuthToken' : 'githubAuthToken';
+      res.redirect(`${process.env.FRONTEND_URL}/?${tokenParam}=${accessToken}`);
+    } catch (err) {
+      reqLog.error({ error: err }, `Failed to complete ${provider} OAuth login`);
+      res.redirect(`${process.env.FRONTEND_URL}/?error=auth_failed`);
+    }
+  }
+}

src/controllers/base.controller.ts

@@ -0,0 +1,344 @@
+// src/controllers/base.controller.ts
+// ============================================================================
+// BASE CONTROLLER FOR TSOA
+// ============================================================================
+// Provides a standardized base class for all tsoa controllers, ensuring
+// consistent response formatting, error handling, and access to common
+// utilities across the API.
+//
+// All controller methods should use the helper methods provided here to
+// construct responses, ensuring compliance with ADR-028 (API Response Format).
+// ============================================================================
+
+import { Controller } from 'tsoa';
+import type {
+  SuccessResponse,
+  ErrorResponse,
+  PaginatedResponse,
+  PaginationInput,
+  PaginationMeta,
+  ResponseMeta,
+  ControllerErrorCodeType,
+} from './types';
+import { ControllerErrorCode } from './types';
+
+/**
+ * Base controller class providing standardized response helpers and error handling.
+ *
+ * All tsoa controllers should extend this class to ensure consistent API
+ * response formatting per ADR-028.
+ *
+ * @example
+ * ```typescript
+ * import { Route, Get, Tags } from 'tsoa';
+ * import { BaseController } from './base.controller';
+ * import type { SuccessResponse } from './types';
+ *
+ * @Route('users')
+ * @Tags('Users')
+ * export class UsersController extends BaseController {
+ *   @Get('{id}')
+ *   public async getUser(id: string): Promise<SuccessResponse<User>> {
+ *     const user = await userService.getUserById(id);
+ *     return this.success(user);
+ *   }
+ * }
+ * ```
+ */
+export abstract class BaseController extends Controller {
+  // ==========================================================================
+  // SUCCESS RESPONSE HELPERS
+  // ==========================================================================
+
+  /**
+   * Creates a standard success response envelope.
+   *
+   * @param data - The response payload
+   * @param statusCode - HTTP status code (default: 200)
+   * @param meta - Optional metadata (requestId, timestamp)
+   * @returns A SuccessResponse object matching ADR-028 format
+   *
+   * @example
+   * ```typescript
+   * // Simple success response
+   * return this.success({ id: 1, name: 'Item' });
+   *
+   * // Success with 201 Created
+   * this.setStatus(201);
+   * return this.success(newUser);
+   *
+   * // Success with metadata
+   * return this.success(data, { requestId: 'abc-123' });
+   * ```
+   */
+  protected success<T>(data: T, meta?: Omit<ResponseMeta, 'pagination'>): SuccessResponse<T> {
+    const response: SuccessResponse<T> = {
+      success: true,
+      data,
+    };
+
+    if (meta) {
+      response.meta = meta;
+    }
+
+    return response;
+  }
+
+  /**
+   * Creates a paginated success response with pagination metadata.
+   *
+   * @param data - Array of items for the current page
+   * @param pagination - Pagination input (page, limit, total)
+   * @param meta - Optional additional metadata
+   * @returns A PaginatedResponse object with calculated pagination info
+   *
+   * @example
+   * ```typescript
+   * const { users, total } = await userService.listUsers({ page, limit });
+   * return this.paginated(users, { page, limit, total });
+   * ```
+   */
+  protected paginated<T>(
+    data: T[],
+    pagination: PaginationInput,
+    meta?: Omit<ResponseMeta, 'pagination'>,
+  ): PaginatedResponse<T> {
+    const paginationMeta = this.calculatePagination(pagination);
+
+    return {
+      success: true,
+      data,
+      meta: {
+        ...meta,
+        pagination: paginationMeta,
+      },
+    };
+  }
+
+  /**
+   * Creates a success response with just a message.
+   * Useful for operations that complete successfully but don't return data.
+   *
+   * @param message - Success message
+   * @returns A SuccessResponse with a message object
+   *
+   * @example
+   * ```typescript
+   * // After deleting a resource
+   * return this.message('User deleted successfully');
+   *
+   * // After an action that doesn't return data
+   * return this.message('Password updated successfully');
+   * ```
+   */
+  protected message(message: string): SuccessResponse<{ message: string }> {
+    return this.success({ message });
+  }
+
+  // ==========================================================================
+  // ERROR RESPONSE HELPERS
+  // ==========================================================================
+
+  /**
+   * Creates a standard error response envelope.
+   *
+   * Note: For most error cases, you should throw an appropriate error class
+   * (NotFoundError, ValidationError, etc.) and let the global error handler
+   * format the response. Use this method only when you need fine-grained
+   * control over the error response format.
+   *
+   * @param code - Machine-readable error code
+   * @param message - Human-readable error message
+   * @param details - Optional error details (validation errors, etc.)
+   * @param meta - Optional metadata (requestId for error tracking)
+   * @returns An ErrorResponse object matching ADR-028 format
+   *
+   * @example
+   * ```typescript
+   * // Manual error response (prefer throwing errors instead)
+   * this.setStatus(400);
+   * return this.error(
+   *   ControllerErrorCode.BAD_REQUEST,
+   *   'Invalid operation',
+   *   { reason: 'Cannot delete last admin user' }
+   * );
+   * ```
+   */
+  protected error(
+    code: ControllerErrorCodeType | string,
+    message: string,
+    details?: unknown,
+    meta?: Pick<ResponseMeta, 'requestId' | 'timestamp'>,
+  ): ErrorResponse {
+    const response: ErrorResponse = {
+      success: false,
+      error: {
+        code,
+        message,
+      },
+    };
+
+    if (details !== undefined) {
+      response.error.details = details;
+    }
+
+    if (meta) {
+      response.meta = meta;
+    }
+
+    return response;
+  }
+
+  // ==========================================================================
+  // PAGINATION HELPERS
+  // ==========================================================================
+
+  /**
+   * Calculates pagination metadata from input parameters.
+   *
+   * @param input - Pagination input (page, limit, total)
+   * @returns Calculated pagination metadata
+   */
+  protected calculatePagination(input: PaginationInput): PaginationMeta {
+    const { page, limit, total } = input;
+    const totalPages = Math.ceil(total / limit);
+
+    return {
+      page,
+      limit,
+      total,
+      totalPages,
+      hasNextPage: page < totalPages,
+      hasPrevPage: page > 1,
+    };
+  }
+
+  /**
+   * Normalizes pagination parameters with defaults and bounds.
+   *
+   * @param page - Requested page number (defaults to 1)
+   * @param limit - Requested page size (defaults to 20, max 100)
+   * @returns Normalized page and limit values
+   *
+   * @example
+   * ```typescript
+   * @Get()
+   * public async listUsers(
+   *   @Query() page?: number,
+   *   @Query() limit?: number,
+   * ): Promise<PaginatedResponse<User>> {
+   *   const { page: p, limit: l } = this.normalizePagination(page, limit);
+   *   // p and l are now safe to use with guaranteed bounds
+   * }
+   * ```
+   */
+  protected normalizePagination(page?: number, limit?: number): { page: number; limit: number } {
+    const DEFAULT_PAGE = 1;
+    const DEFAULT_LIMIT = 20;
+    const MAX_LIMIT = 100;
+
+    return {
+      page: Math.max(DEFAULT_PAGE, Math.floor(page ?? DEFAULT_PAGE)),
+      limit: Math.min(MAX_LIMIT, Math.max(1, Math.floor(limit ?? DEFAULT_LIMIT))),
+    };
+  }
+
+  // ==========================================================================
+  // HTTP STATUS CODE HELPERS
+  // ==========================================================================
+
+  /**
+   * Sets HTTP 201 Created status and returns success response.
+   * Use for POST endpoints that create new resources.
+   *
+   * @param data - The created resource
+   * @param meta - Optional metadata
+   * @returns SuccessResponse with 201 status
+   *
+   * @example
+   * ```typescript
+   * @Post()
+   * public async createUser(body: CreateUserRequest): Promise<SuccessResponse<User>> {
+   *   const user = await userService.createUser(body);
+   *   return this.created(user);
+   * }
+   * ```
+   */
+  protected created<T>(data: T, meta?: Omit<ResponseMeta, 'pagination'>): SuccessResponse<T> {
+    this.setStatus(201);
+    return this.success(data, meta);
+  }
+
+  /**
+   * Sets HTTP 204 No Content status.
+   * Use for DELETE endpoints or operations that succeed without returning data.
+   *
+   * Note: tsoa requires a return type, so this returns undefined.
+   * The actual HTTP response will have no body.
+   *
+   * @example
+   * ```typescript
+   * @Delete('{id}')
+   * public async deleteUser(id: string): Promise<void> {
+   *   await userService.deleteUser(id);
+   *   return this.noContent();
+   * }
+   * ```
+   */
+  protected noContent(): void {
+    this.setStatus(204);
+  }
+
+  // ==========================================================================
+  // ERROR CODE CONSTANTS
+  // ==========================================================================
+
+  /**
+   * Standard error codes for use in error responses.
+   * Exposed as a protected property for use in derived controllers.
+   */
+  protected readonly ErrorCode = ControllerErrorCode;
+}
+
+// ============================================================================
+// CONTROLLER ERROR CLASSES
+// ============================================================================
+// Error classes that can be thrown from controllers and will be handled
+// by the global error handler to produce appropriate HTTP responses.
+// These re-export the repository errors for convenience.
+// ============================================================================
+
+export {
+  NotFoundError,
+  ValidationError,
+  ForbiddenError,
+  UniqueConstraintError,
+  RepositoryError,
+} from '../services/db/errors.db';
+
+// ============================================================================
+// RE-EXPORTS
+// ============================================================================
+// Re-export types for convenient imports in controller files.
+// ============================================================================
+
+export { ControllerErrorCode } from './types';
+export type {
+  SuccessResponse,
+  ErrorResponse,
+  PaginatedResponse,
+  PaginationInput,
+  PaginationMeta,
+  PaginationParams,
+  ResponseMeta,
+  RequestContext,
+  AuthenticatedUser,
+  MessageResponse,
+  HealthResponse,
+  DetailedHealthResponse,
+  ServiceHealth,
+  ValidationIssue,
+  ValidationErrorResponse,
+  ControllerErrorCodeType,
+  ApiResponse,
+} from './types';

src/controllers/budget.controller.test.ts

@@ -0,0 +1,467 @@
+// src/controllers/budget.controller.test.ts
+// ============================================================================
+// BUDGET CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the BudgetController class. These tests verify controller
+// logic in isolation by mocking the budget repository.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Put: () => () => {},
+  Delete: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock budget repository
+vi.mock('../services/db/index.db', () => ({
+  budgetRepo: {
+    getBudgetsForUser: vi.fn(),
+    createBudget: vi.fn(),
+    updateBudget: vi.fn(),
+    deleteBudget: vi.fn(),
+    getSpendingByCategory: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import { budgetRepo } from '../services/db/index.db';
+import { BudgetController } from './budget.controller';
+
+// Cast mocked modules for type-safe access
+const mockedBudgetRepo = budgetRepo as Mocked<typeof budgetRepo>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    role: 'user' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock budget record.
+ */
+function createMockBudget(overrides: Record<string, unknown> = {}) {
+  return {
+    budget_id: 1,
+    user_id: 'test-user-id',
+    name: 'Monthly Groceries',
+    amount_cents: 50000,
+    period: 'monthly' as const,
+    start_date: '2024-01-01',
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock spending by category record.
+ */
+function createMockSpendingByCategory(overrides: Record<string, unknown> = {}) {
+  return {
+    category_id: 1,
+    category_name: 'Dairy & Eggs',
+    total_spent_cents: 2500,
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('BudgetController', () => {
+  let controller: BudgetController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new BudgetController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // LIST BUDGETS
+  // ==========================================================================
+
+  describe('getBudgets()', () => {
+    it('should return all budgets for the user', async () => {
+      // Arrange
+      const mockBudgets = [
+        createMockBudget(),
+        createMockBudget({ budget_id: 2, name: 'Weekly Snacks', period: 'weekly' }),
+      ];
+      const request = createMockRequest();
+
+      mockedBudgetRepo.getBudgetsForUser.mockResolvedValue(mockBudgets);
+
+      // Act
+      const result = await controller.getBudgets(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].name).toBe('Monthly Groceries');
+      }
+      expect(mockedBudgetRepo.getBudgetsForUser).toHaveBeenCalledWith(
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when user has no budgets', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBudgetRepo.getBudgetsForUser.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getBudgets(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // CREATE BUDGET
+  // ==========================================================================
+
+  describe('createBudget()', () => {
+    it('should create a new budget', async () => {
+      // Arrange
+      const mockBudget = createMockBudget();
+      const request = createMockRequest();
+
+      mockedBudgetRepo.createBudget.mockResolvedValue(mockBudget);
+
+      // Act
+      const result = await controller.createBudget(request, {
+        name: 'Monthly Groceries',
+        amount_cents: 50000,
+        period: 'monthly',
+        start_date: '2024-01-01',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.name).toBe('Monthly Groceries');
+        expect(result.data.amount_cents).toBe(50000);
+      }
+      expect(mockedBudgetRepo.createBudget).toHaveBeenCalledWith(
+        'test-user-id',
+        expect.objectContaining({
+          name: 'Monthly Groceries',
+          amount_cents: 50000,
+          period: 'monthly',
+        }),
+        expect.anything(),
+      );
+    });
+
+    it('should create a weekly budget', async () => {
+      // Arrange
+      const mockBudget = createMockBudget({ period: 'weekly', amount_cents: 10000 });
+      const request = createMockRequest();
+
+      mockedBudgetRepo.createBudget.mockResolvedValue(mockBudget);
+
+      // Act
+      const result = await controller.createBudget(request, {
+        name: 'Weekly Snacks',
+        amount_cents: 10000,
+        period: 'weekly',
+        start_date: '2024-01-01',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.period).toBe('weekly');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // UPDATE BUDGET
+  // ==========================================================================
+
+  describe('updateBudget()', () => {
+    it('should update an existing budget', async () => {
+      // Arrange
+      const mockUpdatedBudget = createMockBudget({ amount_cents: 60000 });
+      const request = createMockRequest();
+
+      mockedBudgetRepo.updateBudget.mockResolvedValue(mockUpdatedBudget);
+
+      // Act
+      const result = await controller.updateBudget(1, request, {
+        amount_cents: 60000,
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.amount_cents).toBe(60000);
+      }
+      expect(mockedBudgetRepo.updateBudget).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        expect.objectContaining({ amount_cents: 60000 }),
+        expect.anything(),
+      );
+    });
+
+    it('should update budget name', async () => {
+      // Arrange
+      const mockUpdatedBudget = createMockBudget({ name: 'Updated Budget Name' });
+      const request = createMockRequest();
+
+      mockedBudgetRepo.updateBudget.mockResolvedValue(mockUpdatedBudget);
+
+      // Act
+      const result = await controller.updateBudget(1, request, {
+        name: 'Updated Budget Name',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.name).toBe('Updated Budget Name');
+      }
+    });
+
+    it('should reject update with no fields provided', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act & Assert
+      await expect(controller.updateBudget(1, request, {})).rejects.toThrow(
+        'At least one field to update must be provided.',
+      );
+    });
+
+    it('should update multiple fields at once', async () => {
+      // Arrange
+      const mockUpdatedBudget = createMockBudget({
+        name: 'New Name',
+        amount_cents: 75000,
+        period: 'weekly',
+      });
+      const request = createMockRequest();
+
+      mockedBudgetRepo.updateBudget.mockResolvedValue(mockUpdatedBudget);
+
+      // Act
+      const result = await controller.updateBudget(1, request, {
+        name: 'New Name',
+        amount_cents: 75000,
+        period: 'weekly',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      expect(mockedBudgetRepo.updateBudget).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        expect.objectContaining({
+          name: 'New Name',
+          amount_cents: 75000,
+          period: 'weekly',
+        }),
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // DELETE BUDGET
+  // ==========================================================================
+
+  describe('deleteBudget()', () => {
+    it('should delete a budget', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBudgetRepo.deleteBudget.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteBudget(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockedBudgetRepo.deleteBudget).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // SPENDING ANALYSIS
+  // ==========================================================================
+
+  describe('getSpendingAnalysis()', () => {
+    it('should return spending breakdown by category', async () => {
+      // Arrange
+      const mockSpendingData = [
+        createMockSpendingByCategory(),
+        createMockSpendingByCategory({
+          category_id: 2,
+          category_name: 'Produce',
+          total_cents: 3500,
+        }),
+      ];
+      const request = createMockRequest();
+
+      mockedBudgetRepo.getSpendingByCategory.mockResolvedValue(mockSpendingData);
+
+      // Act
+      const result = await controller.getSpendingAnalysis('2024-01-01', '2024-01-31', request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].category_name).toBe('Dairy & Eggs');
+      }
+      expect(mockedBudgetRepo.getSpendingByCategory).toHaveBeenCalledWith(
+        'test-user-id',
+        '2024-01-01',
+        '2024-01-31',
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when no spending data exists', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBudgetRepo.getSpendingByCategory.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getSpendingAnalysis('2024-01-01', '2024-01-31', request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBudgetRepo.getBudgetsForUser.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getBudgets(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use created helper for 201 responses', async () => {
+      // Arrange
+      const mockBudget = createMockBudget();
+      const request = createMockRequest();
+
+      mockedBudgetRepo.createBudget.mockResolvedValue(mockBudget);
+
+      // Act
+      const result = await controller.createBudget(request, {
+        name: 'Test',
+        amount_cents: 1000,
+        period: 'weekly',
+        start_date: '2024-01-01',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should use noContent helper for 204 responses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedBudgetRepo.deleteBudget.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteBudget(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+    });
+  });
+});

src/controllers/budget.controller.ts

@@ -0,0 +1,233 @@
+// src/controllers/budget.controller.ts
+// ============================================================================
+// BUDGET CONTROLLER
+// ============================================================================
+// Provides endpoints for managing user budgets, including CRUD operations
+// and spending analysis. All endpoints require authentication.
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Put,
+  Delete,
+  Route,
+  Tags,
+  Security,
+  Body,
+  Path,
+  Query,
+  Request,
+  SuccessResponse,
+  Response,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { budgetRepo } from '../services/db/index.db';
+import type { Budget, SpendingByCategory, UserProfile } from '../types';
+
+// ============================================================================
+// REQUEST/RESPONSE TYPES
+// ============================================================================
+
+/**
+ * Request body for creating a new budget.
+ */
+interface CreateBudgetRequest {
+  /** Budget name */
+  name: string;
+  /** Budget amount in cents (must be positive) */
+  amount_cents: number;
+  /** Budget period - weekly or monthly */
+  period: 'weekly' | 'monthly';
+  /** Budget start date in YYYY-MM-DD format */
+  start_date: string;
+}
+
+/**
+ * Request body for updating a budget.
+ * All fields are optional, but at least one must be provided.
+ */
+interface UpdateBudgetRequest {
+  /** Budget name */
+  name?: string;
+  /** Budget amount in cents (must be positive) */
+  amount_cents?: number;
+  /** Budget period - weekly or monthly */
+  period?: 'weekly' | 'monthly';
+  /** Budget start date in YYYY-MM-DD format */
+  start_date?: string;
+}
+
+// ============================================================================
+// BUDGET CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for managing user budgets.
+ *
+ * All endpoints require JWT authentication. Users can only access
+ * their own budgets - the user ID is extracted from the JWT token.
+ */
+@Route('budgets')
+@Tags('Budgets')
+@Security('bearerAuth')
+export class BudgetController extends BaseController {
+  // ==========================================================================
+  // LIST BUDGETS
+  // ==========================================================================
+
+  /**
+   * Get all budgets for the authenticated user.
+   *
+   * Returns a list of all budgets owned by the authenticated user,
+   * ordered by start date descending (newest first).
+   *
+   * @summary Get all budgets
+   * @param request Express request with authenticated user
+   * @returns List of user budgets
+   */
+  @Get()
+  @SuccessResponse(200, 'List of user budgets')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getBudgets(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<Budget[]>> {
+    const userProfile = request.user as UserProfile;
+    const budgets = await budgetRepo.getBudgetsForUser(userProfile.user.user_id, request.log);
+    return this.success(budgets);
+  }
+
+  // ==========================================================================
+  // CREATE BUDGET
+  // ==========================================================================
+
+  /**
+   * Create a new budget for the authenticated user.
+   *
+   * Creates a budget with the specified name, amount, period, and start date.
+   * The budget is automatically associated with the authenticated user.
+   *
+   * @summary Create budget
+   * @param request Express request with authenticated user
+   * @param body Budget creation data
+   * @returns The newly created budget
+   */
+  @Post()
+  @SuccessResponse(201, 'Budget created')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async createBudget(
+    @Request() request: ExpressRequest,
+    @Body() body: CreateBudgetRequest,
+  ): Promise<SuccessResponseType<Budget>> {
+    const userProfile = request.user as UserProfile;
+    const newBudget = await budgetRepo.createBudget(userProfile.user.user_id, body, request.log);
+    return this.created(newBudget);
+  }
+
+  // ==========================================================================
+  // UPDATE BUDGET
+  // ==========================================================================
+
+  /**
+   * Update an existing budget.
+   *
+   * Updates the specified budget with the provided fields. At least one
+   * field must be provided. The user must own the budget to update it.
+   *
+   * @summary Update budget
+   * @param id Budget ID
+   * @param request Express request with authenticated user
+   * @param body Fields to update
+   * @returns The updated budget
+   */
+  @Put('{id}')
+  @SuccessResponse(200, 'Budget updated')
+  @Response<ErrorResponse>(400, 'Validation error - at least one field required')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Budget not found')
+  public async updateBudget(
+    @Path() id: number,
+    @Request() request: ExpressRequest,
+    @Body() body: UpdateBudgetRequest,
+  ): Promise<SuccessResponseType<Budget>> {
+    const userProfile = request.user as UserProfile;
+
+    // Validate at least one field is provided
+    if (Object.keys(body).length === 0) {
+      this.setStatus(400);
+      throw new Error('At least one field to update must be provided.');
+    }
+
+    const updatedBudget = await budgetRepo.updateBudget(
+      id,
+      userProfile.user.user_id,
+      body,
+      request.log,
+    );
+    return this.success(updatedBudget);
+  }
+
+  // ==========================================================================
+  // DELETE BUDGET
+  // ==========================================================================
+
+  /**
+   * Delete a budget.
+   *
+   * Permanently deletes the specified budget. The user must own
+   * the budget to delete it.
+   *
+   * @summary Delete budget
+   * @param id Budget ID
+   * @param request Express request with authenticated user
+   */
+  @Delete('{id}')
+  @SuccessResponse(204, 'Budget deleted')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Budget not found')
+  public async deleteBudget(@Path() id: number, @Request() request: ExpressRequest): Promise<void> {
+    const userProfile = request.user as UserProfile;
+    await budgetRepo.deleteBudget(id, userProfile.user.user_id, request.log);
+    return this.noContent();
+  }
+
+  // ==========================================================================
+  // SPENDING ANALYSIS
+  // ==========================================================================
+
+  /**
+   * Get spending analysis by category.
+   *
+   * Returns a breakdown of spending by category for the specified date range.
+   * This helps users understand their spending patterns relative to their budgets.
+   *
+   * @summary Get spending analysis
+   * @param startDate Start date in YYYY-MM-DD format
+   * @param endDate End date in YYYY-MM-DD format
+   * @param request Express request with authenticated user
+   * @returns Spending breakdown by category
+   */
+  @Get('spending-analysis')
+  @SuccessResponse(200, 'Spending breakdown by category')
+  @Response<ErrorResponse>(400, 'Invalid date format')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getSpendingAnalysis(
+    @Query() startDate: string,
+    @Query() endDate: string,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<SpendingByCategory[]>> {
+    const userProfile = request.user as UserProfile;
+    const spendingData = await budgetRepo.getSpendingByCategory(
+      userProfile.user.user_id,
+      startDate,
+      endDate,
+      request.log,
+    );
+    return this.success(spendingData);
+  }
+}

src/controllers/category.controller.test.ts

@@ -0,0 +1,329 @@
+// src/controllers/category.controller.test.ts
+// ============================================================================
+// CATEGORY CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the CategoryController class. These tests verify controller
+// logic in isolation by mocking the category database service.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock category database service
+vi.mock('../services/db/category.db', () => ({
+  CategoryDbService: {
+    getAllCategories: vi.fn(),
+    getCategoryByName: vi.fn(),
+    getCategoryById: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import { CategoryDbService } from '../services/db/category.db';
+import { CategoryController } from './category.controller';
+
+// Cast mocked modules for type-safe access
+const mockedCategoryDbService = CategoryDbService as Mocked<typeof CategoryDbService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock category record.
+ * Matches the Category interface from category.db.ts
+ */
+function createMockCategory(overrides: Record<string, unknown> = {}) {
+  return {
+    category_id: 1,
+    name: 'Dairy & Eggs',
+    created_at: new Date('2024-01-01T00:00:00.000Z'),
+    updated_at: new Date('2024-01-01T00:00:00.000Z'),
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('CategoryController', () => {
+  let controller: CategoryController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new CategoryController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // LIST CATEGORIES
+  // ==========================================================================
+
+  describe('getAllCategories()', () => {
+    it('should return all categories', async () => {
+      // Arrange
+      const mockCategories = [
+        createMockCategory(),
+        createMockCategory({ category_id: 2, name: 'Produce' }),
+        createMockCategory({ category_id: 3, name: 'Meat & Seafood' }),
+      ];
+      const request = createMockRequest();
+
+      mockedCategoryDbService.getAllCategories.mockResolvedValue(mockCategories);
+
+      // Act
+      const result = await controller.getAllCategories(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(3);
+        expect(result.data[0].name).toBe('Dairy & Eggs');
+      }
+      expect(mockedCategoryDbService.getAllCategories).toHaveBeenCalledWith(expect.anything());
+    });
+
+    it('should return empty array when no categories exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedCategoryDbService.getAllCategories.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getAllCategories(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // LOOKUP BY NAME
+  // ==========================================================================
+
+  describe('getCategoryByName()', () => {
+    it('should return category when found by name', async () => {
+      // Arrange
+      const mockCategory = createMockCategory();
+      const request = createMockRequest();
+
+      mockedCategoryDbService.getCategoryByName.mockResolvedValue(mockCategory);
+
+      // Act
+      const result = await controller.getCategoryByName('Dairy & Eggs', request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.name).toBe('Dairy & Eggs');
+        expect(result.data.category_id).toBe(1);
+      }
+      expect(mockedCategoryDbService.getCategoryByName).toHaveBeenCalledWith(
+        'Dairy & Eggs',
+        expect.anything(),
+      );
+    });
+
+    it('should throw NotFoundError when category not found', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedCategoryDbService.getCategoryByName.mockResolvedValue(null);
+
+      // Act & Assert
+      await expect(controller.getCategoryByName('Nonexistent Category', request)).rejects.toThrow(
+        "Category 'Nonexistent Category' not found",
+      );
+    });
+
+    it('should return error when name is empty', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getCategoryByName('', request);
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should return error when name is whitespace only', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getCategoryByName('   ', request);
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+  });
+
+  // ==========================================================================
+  // GET BY ID
+  // ==========================================================================
+
+  describe('getCategoryById()', () => {
+    it('should return category when found by ID', async () => {
+      // Arrange
+      const mockCategory = createMockCategory();
+      const request = createMockRequest();
+
+      mockedCategoryDbService.getCategoryById.mockResolvedValue(mockCategory);
+
+      // Act
+      const result = await controller.getCategoryById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.category_id).toBe(1);
+        expect(result.data.name).toBe('Dairy & Eggs');
+      }
+      expect(mockedCategoryDbService.getCategoryById).toHaveBeenCalledWith(1, expect.anything());
+    });
+
+    it('should throw NotFoundError when category not found', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedCategoryDbService.getCategoryById.mockResolvedValue(null);
+
+      // Act & Assert
+      await expect(controller.getCategoryById(999, request)).rejects.toThrow(
+        'Category with ID 999 not found',
+      );
+    });
+
+    it('should return error for invalid ID (zero)', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getCategoryById(0, request);
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should return error for invalid ID (negative)', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getCategoryById(-1, request);
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should return error for invalid ID (NaN)', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getCategoryById(NaN, request);
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+  });
+
+  // ==========================================================================
+  // PUBLIC ACCESS (NO AUTH REQUIRED)
+  // ==========================================================================
+
+  describe('Public access', () => {
+    it('should work without user authentication', async () => {
+      // Arrange
+      const mockCategories = [createMockCategory()];
+      const request = createMockRequest({ user: undefined });
+
+      mockedCategoryDbService.getAllCategories.mockResolvedValue(mockCategories);
+
+      // Act
+      const result = await controller.getAllCategories(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(1);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockCategories = [createMockCategory()];
+      const request = createMockRequest();
+
+      mockedCategoryDbService.getAllCategories.mockResolvedValue(mockCategories);
+
+      // Act
+      const result = await controller.getAllCategories(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use error helper for validation errors', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getCategoryByName('', request);
+
+      // Assert
+      expect(result).toHaveProperty('success', false);
+    });
+  });
+});

src/controllers/category.controller.ts

@@ -0,0 +1,137 @@
+// src/controllers/category.controller.ts
+// ============================================================================
+// CATEGORY CONTROLLER
+// ============================================================================
+// Provides endpoints for retrieving grocery categories. Categories are
+// predefined (e.g., "Dairy & Eggs", "Fruits & Vegetables") and are used
+// to organize items throughout the application.
+//
+// All endpoints are public (no authentication required).
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import { Get, Route, Tags, Path, Query, Request, SuccessResponse, Response } from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController, NotFoundError } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { CategoryDbService, type Category } from '../services/db/category.db';
+
+// ============================================================================
+// CATEGORY CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for retrieving grocery categories.
+ *
+ * Categories are system-defined and cannot be modified by users.
+ * All endpoints are public and do not require authentication.
+ */
+@Route('categories')
+@Tags('Categories')
+export class CategoryController extends BaseController {
+  // ==========================================================================
+  // LIST CATEGORIES
+  // ==========================================================================
+
+  /**
+   * List all available grocery categories.
+   *
+   * Returns all predefined grocery categories ordered alphabetically by name.
+   * Use this endpoint to populate category dropdowns in the UI.
+   *
+   * @summary List all available grocery categories
+   * @param request Express request for logging
+   * @returns List of categories ordered alphabetically by name
+   */
+  @Get()
+  @SuccessResponse(200, 'List of categories ordered alphabetically by name')
+  @Response<ErrorResponse>(500, 'Server error')
+  public async getAllCategories(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<Category[]>> {
+    const categories = await CategoryDbService.getAllCategories(request.log);
+    return this.success(categories);
+  }
+
+  // ==========================================================================
+  // LOOKUP BY NAME
+  // ==========================================================================
+
+  /**
+   * Lookup category by name.
+   *
+   * Find a category by its name (case-insensitive). This endpoint is provided
+   * for migration support to help clients transition from using category names
+   * to category IDs.
+   *
+   * @summary Lookup category by name
+   * @param name The category name to search for (case-insensitive)
+   * @param request Express request for logging
+   * @returns Category found
+   */
+  @Get('lookup')
+  @SuccessResponse(200, 'Category found')
+  @Response<ErrorResponse>(400, 'Missing or invalid query parameter')
+  @Response<ErrorResponse>(404, 'Category not found')
+  public async getCategoryByName(
+    @Query() name: string,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<Category>> {
+    // Validate name parameter
+    if (!name || name.trim() === '') {
+      this.setStatus(400);
+      return this.error(
+        this.ErrorCode.BAD_REQUEST,
+        'Query parameter "name" is required and must be a non-empty string',
+      ) as unknown as SuccessResponseType<Category>;
+    }
+
+    const category = await CategoryDbService.getCategoryByName(name, request.log);
+
+    if (!category) {
+      throw new NotFoundError(`Category '${name}' not found`);
+    }
+
+    return this.success(category);
+  }
+
+  // ==========================================================================
+  // GET BY ID
+  // ==========================================================================
+
+  /**
+   * Get a specific category by ID.
+   *
+   * Retrieve detailed information about a single category.
+   *
+   * @summary Get a specific category by ID
+   * @param id The category ID
+   * @param request Express request for logging
+   * @returns Category details
+   */
+  @Get('{id}')
+  @SuccessResponse(200, 'Category details')
+  @Response<ErrorResponse>(400, 'Invalid category ID')
+  @Response<ErrorResponse>(404, 'Category not found')
+  public async getCategoryById(
+    @Path() id: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<Category>> {
+    // Validate ID
+    if (isNaN(id) || id <= 0) {
+      this.setStatus(400);
+      return this.error(
+        this.ErrorCode.BAD_REQUEST,
+        'Invalid category ID. Must be a positive integer.',
+      ) as unknown as SuccessResponseType<Category>;
+    }
+
+    const category = await CategoryDbService.getCategoryById(id, request.log);
+
+    if (!category) {
+      throw new NotFoundError(`Category with ID ${id} not found`);
+    }
+
+    return this.success(category);
+  }
+}

src/controllers/deals.controller.test.ts

@@ -0,0 +1,263 @@
+// src/controllers/deals.controller.test.ts
+// ============================================================================
+// DEALS CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the DealsController class. These tests verify controller
+// logic in isolation by mocking the deals repository.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock deals repository
+vi.mock('../services/db/deals.db', () => ({
+  dealsRepo: {
+    findBestPricesForWatchedItems: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import { dealsRepo } from '../services/db/deals.db';
+import { DealsController } from './deals.controller';
+
+// Cast mocked modules for type-safe access
+const mockedDealsRepo = dealsRepo as Mocked<typeof dealsRepo>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    role: 'user' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock watched item deal.
+ * Matches the WatchedItemDeal interface from types.ts
+ */
+function createMockWatchedItemDeal(overrides: Record<string, unknown> = {}) {
+  return {
+    master_item_id: 100,
+    item_name: 'Milk 2%',
+    best_price_in_cents: 350,
+    store: {
+      store_id: 1,
+      name: 'Superstore',
+      logo_url: '/uploads/logos/superstore.jpg',
+      locations: [
+        {
+          address_line_1: '123 Main St',
+          city: 'Toronto',
+          province_state: 'ON',
+          postal_code: 'M5V 1A1',
+        },
+      ],
+    },
+    flyer_id: 10,
+    valid_to: '2024-01-21',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('DealsController', () => {
+  let controller: DealsController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new DealsController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // BEST WATCHED PRICES
+  // ==========================================================================
+
+  describe('getBestWatchedPrices()', () => {
+    it('should return best prices for watched items', async () => {
+      // Arrange
+      const mockDeals = [
+        createMockWatchedItemDeal(),
+        createMockWatchedItemDeal({
+          master_item_id: 101,
+          item_name: 'Bread',
+          best_price_in_cents: 250,
+        }),
+      ];
+      const request = createMockRequest();
+
+      mockedDealsRepo.findBestPricesForWatchedItems.mockResolvedValue(mockDeals);
+
+      // Act
+      const result = await controller.getBestWatchedPrices(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].item_name).toBe('Milk 2%');
+        expect(result.data[0].best_price_in_cents).toBe(350);
+      }
+      expect(mockedDealsRepo.findBestPricesForWatchedItems).toHaveBeenCalledWith(
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when user has no watched items', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDealsRepo.findBestPricesForWatchedItems.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getBestWatchedPrices(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should return empty array when no active deals exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDealsRepo.findBestPricesForWatchedItems.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getBestWatchedPrices(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should log successful fetch', async () => {
+      // Arrange
+      const mockDeals = [createMockWatchedItemDeal()];
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedDealsRepo.findBestPricesForWatchedItems.mockResolvedValue(mockDeals);
+
+      // Act
+      await controller.getBestWatchedPrices(request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { dealCount: 1 },
+        'Successfully fetched best watched item deals.',
+      );
+    });
+
+    it('should use user ID from authenticated profile', async () => {
+      // Arrange
+      const customProfile = {
+        full_name: 'Custom User',
+        role: 'user' as const,
+        points: 0,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+        user: {
+          user_id: 'custom-user-id',
+          email: 'custom@example.com',
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+        },
+      };
+      const request = createMockRequest({ user: customProfile });
+
+      mockedDealsRepo.findBestPricesForWatchedItems.mockResolvedValue([]);
+
+      // Act
+      await controller.getBestWatchedPrices(request);
+
+      // Assert
+      expect(mockedDealsRepo.findBestPricesForWatchedItems).toHaveBeenCalledWith(
+        'custom-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDealsRepo.findBestPricesForWatchedItems.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getBestWatchedPrices(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+  });
+});

src/controllers/deals.controller.ts

@@ -0,0 +1,62 @@
+// src/controllers/deals.controller.ts
+// ============================================================================
+// DEALS CONTROLLER
+// ============================================================================
+// Provides endpoints for retrieving deal information, specifically the
+// best prices for items that the user is watching.
+//
+// All endpoints require authentication.
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import { Get, Route, Tags, Security, Request, SuccessResponse, Response } from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { dealsRepo } from '../services/db/deals.db';
+import type { WatchedItemDeal, UserProfile } from '../types';
+
+// ============================================================================
+// DEALS CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for retrieving deal information.
+ *
+ * All endpoints require JWT authentication. The user ID is extracted
+ * from the JWT token to retrieve user-specific deal information.
+ */
+@Route('deals')
+@Tags('Deals')
+@Security('bearerAuth')
+export class DealsController extends BaseController {
+  // ==========================================================================
+  // BEST WATCHED PRICES
+  // ==========================================================================
+
+  /**
+   * Get best prices for watched items.
+   *
+   * Fetches the best current sale price for each of the authenticated user's
+   * watched items. Only considers currently active flyers (valid_to >= today).
+   * In case of price ties, the deal that is valid for the longest time is preferred.
+   *
+   * @summary Get best prices for watched items
+   * @param request Express request with authenticated user
+   * @returns List of best prices for watched items
+   */
+  @Get('best-watched-prices')
+  @SuccessResponse(200, 'List of best prices for watched items')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getBestWatchedPrices(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<WatchedItemDeal[]>> {
+    const userProfile = request.user as UserProfile;
+    const deals = await dealsRepo.findBestPricesForWatchedItems(
+      userProfile.user.user_id,
+      request.log,
+    );
+    request.log.info({ dealCount: deals.length }, 'Successfully fetched best watched item deals.');
+    return this.success(deals);
+  }
+}

src/controllers/flyer.controller.test.ts

@@ -0,0 +1,514 @@
+// src/controllers/flyer.controller.test.ts
+// ============================================================================
+// FLYER CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the FlyerController class. These tests verify controller
+// logic in isolation by mocking external dependencies like database repositories.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+import { createMockFlyer, createMockFlyerItem, resetMockIds } from '../tests/utils/mockFactories';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock database repositories
+vi.mock('../services/db/index.db', () => ({
+  flyerRepo: {
+    getFlyers: vi.fn(),
+    getFlyerById: vi.fn(),
+    getFlyerItems: vi.fn(),
+    getFlyerItemsForFlyers: vi.fn(),
+    countFlyerItemsForFlyers: vi.fn(),
+    trackFlyerItemInteraction: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import * as db from '../services/db/index.db';
+import { FlyerController } from './flyer.controller';
+
+// Access the mocked flyerRepo - vi.mocked() provides type-safe mock access
+const mockedFlyerRepo = {
+  getFlyers: vi.mocked(db.flyerRepo.getFlyers),
+  getFlyerById: vi.mocked(db.flyerRepo.getFlyerById),
+  getFlyerItems: vi.mocked(db.flyerRepo.getFlyerItems),
+  getFlyerItemsForFlyers: vi.mocked(db.flyerRepo.getFlyerItemsForFlyers),
+  countFlyerItemsForFlyers: vi.mocked(db.flyerRepo.countFlyerItemsForFlyers),
+  trackFlyerItemInteraction: vi.mocked(db.flyerRepo.trackFlyerItemInteraction),
+};
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('FlyerController', () => {
+  let controller: FlyerController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    resetMockIds();
+    controller = new FlyerController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // LIST ENDPOINTS
+  // ==========================================================================
+
+  describe('getFlyers()', () => {
+    it('should return flyers with default pagination', async () => {
+      // Arrange
+      const mockFlyers = [createMockFlyer(), createMockFlyer({ flyer_id: 2 })];
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyers.mockResolvedValue(mockFlyers);
+
+      // Act
+      const result = await controller.getFlyers(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+      expect(mockedFlyerRepo.getFlyers).toHaveBeenCalledWith(
+        expect.anything(),
+        20, // default limit
+        0, // default offset
+      );
+    });
+
+    it('should respect custom pagination parameters', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 50, 10);
+
+      // Assert
+      expect(mockedFlyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 50, 10);
+    });
+
+    it('should cap limit at 100', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 200);
+
+      // Assert
+      expect(mockedFlyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 100, 0);
+    });
+
+    it('should floor limit to minimum of 1', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, -5);
+
+      // Assert
+      expect(mockedFlyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 1, 0);
+    });
+
+    it('should normalize offset to 0 if negative', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 20, -10);
+
+      // Assert
+      expect(mockedFlyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 20, 0);
+    });
+
+    it('should floor decimal pagination values', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 15.9, 5.7);
+
+      // Assert
+      expect(mockedFlyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 15, 5);
+    });
+  });
+
+  // ==========================================================================
+  // SINGLE RESOURCE ENDPOINTS
+  // ==========================================================================
+
+  describe('getFlyerById()', () => {
+    it('should return flyer by ID successfully', async () => {
+      // Arrange
+      const mockFlyer = createMockFlyer();
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyerById.mockResolvedValue(mockFlyer);
+
+      // Act
+      const result = await controller.getFlyerById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.flyer_id).toBe(1);
+        expect(result.data.file_name).toBe('flyer-1.jpg');
+      }
+      expect(mockedFlyerRepo.getFlyerById).toHaveBeenCalledWith(1);
+    });
+
+    it('should log successful retrieval', async () => {
+      // Arrange
+      const mockFlyer = createMockFlyer();
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedFlyerRepo.getFlyerById.mockResolvedValue(mockFlyer);
+
+      // Act
+      await controller.getFlyerById(1, request);
+
+      // Assert
+      expect(mockLog.debug).toHaveBeenCalledWith({ flyerId: 1 }, 'Retrieved flyer by ID');
+    });
+  });
+
+  describe('getFlyerItems()', () => {
+    it('should return flyer items successfully', async () => {
+      // Arrange
+      const mockItems = [
+        createMockFlyerItem(),
+        createMockFlyerItem({ flyer_item_id: 2, item: 'Another Product' }),
+      ];
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyerItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getFlyerItems(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].item).toBe('Mock Item');
+      }
+      expect(mockedFlyerRepo.getFlyerItems).toHaveBeenCalledWith(1, expect.anything());
+    });
+
+    it('should log item count', async () => {
+      // Arrange
+      const mockItems = [createMockFlyerItem()];
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedFlyerRepo.getFlyerItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getFlyerItems(1, request);
+
+      // Assert
+      expect(mockLog.debug).toHaveBeenCalledWith(
+        { flyerId: 1, itemCount: 1 },
+        'Retrieved flyer items',
+      );
+    });
+
+    it('should return empty array for flyer with no items', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyerItems.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getFlyerItems(999, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toEqual([]);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BATCH ENDPOINTS
+  // ==========================================================================
+
+  describe('batchFetchItems()', () => {
+    it('should return items for multiple flyers', async () => {
+      // Arrange
+      const mockItems = [
+        createMockFlyerItem({ flyer_id: 1 }),
+        createMockFlyerItem({ flyer_id: 2, flyer_item_id: 2 }),
+      ];
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyerItemsForFlyers.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.batchFetchItems({ flyerIds: [1, 2, 3] }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+      expect(mockedFlyerRepo.getFlyerItemsForFlyers).toHaveBeenCalledWith(
+        [1, 2, 3],
+        expect.anything(),
+      );
+    });
+
+    it('should log batch fetch details', async () => {
+      // Arrange
+      const mockItems = [createMockFlyerItem()];
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedFlyerRepo.getFlyerItemsForFlyers.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.batchFetchItems({ flyerIds: [1, 2] }, request);
+
+      // Assert
+      expect(mockLog.debug).toHaveBeenCalledWith(
+        { flyerCount: 2, itemCount: 1 },
+        'Batch fetched flyer items',
+      );
+    });
+
+    it('should return empty array when no items found', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyerItemsForFlyers.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.batchFetchItems({ flyerIds: [999, 1000] }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toEqual([]);
+      }
+    });
+  });
+
+  describe('batchCountItems()', () => {
+    it('should return total item count for multiple flyers', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.countFlyerItemsForFlyers.mockResolvedValue(25);
+
+      // Act
+      const result = await controller.batchCountItems({ flyerIds: [1, 2, 3] }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.count).toBe(25);
+      }
+      expect(mockedFlyerRepo.countFlyerItemsForFlyers).toHaveBeenCalledWith(
+        [1, 2, 3],
+        expect.anything(),
+      );
+    });
+
+    it('should log count details', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedFlyerRepo.countFlyerItemsForFlyers.mockResolvedValue(10);
+
+      // Act
+      await controller.batchCountItems({ flyerIds: [1] }, request);
+
+      // Assert
+      expect(mockLog.debug).toHaveBeenCalledWith(
+        { flyerCount: 1, totalItems: 10 },
+        'Batch counted items',
+      );
+    });
+
+    it('should return 0 for empty flyer list', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.countFlyerItemsForFlyers.mockResolvedValue(0);
+
+      // Act
+      const result = await controller.batchCountItems({ flyerIds: [] }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.count).toBe(0);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // TRACKING ENDPOINTS
+  // ==========================================================================
+
+  describe('trackItemInteraction()', () => {
+    it('should accept view tracking (fire-and-forget)', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.trackFlyerItemInteraction.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.trackItemInteraction(1, { type: 'view' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Tracking accepted');
+      }
+    });
+
+    it('should accept click tracking', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.trackFlyerItemInteraction.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.trackItemInteraction(1, { type: 'click' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Tracking accepted');
+      }
+    });
+
+    it('should log error but not fail on tracking failure', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      // Make tracking fail
+      mockedFlyerRepo.trackFlyerItemInteraction.mockRejectedValue(new Error('Database error'));
+
+      // Act
+      const result = await controller.trackItemInteraction(1, { type: 'view' }, request);
+
+      // Assert - should still return success (fire-and-forget)
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Tracking accepted');
+      }
+
+      // Wait for async error handling
+      await new Promise((resolve) => setTimeout(resolve, 10));
+
+      // Error should be logged
+      expect(mockLog.error).toHaveBeenCalledWith(
+        expect.objectContaining({
+          error: expect.any(Error),
+          itemId: 1,
+          interactionType: 'view',
+        }),
+        'Flyer item interaction tracking failed (fire-and-forget)',
+      );
+    });
+
+    it('should call tracking with correct parameters', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedFlyerRepo.trackFlyerItemInteraction.mockResolvedValue(undefined);
+
+      // Act
+      await controller.trackItemInteraction(42, { type: 'click' }, request);
+
+      // Assert
+      expect(mockedFlyerRepo.trackFlyerItemInteraction).toHaveBeenCalledWith(
+        42,
+        'click',
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockFlyer = createMockFlyer();
+      const request = createMockRequest();
+
+      mockedFlyerRepo.getFlyerById.mockResolvedValue(mockFlyer);
+
+      // Act
+      const result = await controller.getFlyerById(1, request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+  });
+});

src/controllers/flyer.controller.ts

@@ -0,0 +1,282 @@
+// src/controllers/flyer.controller.ts
+// ============================================================================
+// FLYER CONTROLLER
+// ============================================================================
+// Provides endpoints for managing flyers and flyer items.
+// Implements endpoints for:
+// - Listing flyers with pagination
+// - Getting individual flyer details
+// - Getting items for a flyer
+// - Batch fetching items for multiple flyers
+// - Batch counting items for multiple flyers
+// - Tracking item interactions (fire-and-forget)
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Route,
+  Tags,
+  Path,
+  Query,
+  Body,
+  Request,
+  SuccessResponse,
+  Response,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import * as db from '../services/db/index.db';
+import type { FlyerDto, FlyerItemDto } from '../dtos/common.dto';
+
+// ============================================================================
+// REQUEST/RESPONSE TYPES
+// ============================================================================
+// Types for request bodies and custom response shapes that will appear in
+// the OpenAPI specification.
+// ============================================================================
+
+/**
+ * Request body for batch fetching flyer items.
+ */
+interface BatchFetchRequest {
+  /**
+   * Array of flyer IDs to fetch items for.
+   * @minItems 1
+   * @example [1, 2, 3]
+   */
+  flyerIds: number[];
+}
+
+/**
+ * Request body for batch counting flyer items.
+ */
+interface BatchCountRequest {
+  /**
+   * Array of flyer IDs to count items for.
+   * @example [1, 2, 3]
+   */
+  flyerIds: number[];
+}
+
+/**
+ * Request body for tracking item interactions.
+ */
+interface TrackInteractionRequest {
+  /**
+   * Type of interaction to track.
+   * @example "view"
+   */
+  type: 'view' | 'click';
+}
+
+/**
+ * Response for batch item count.
+ */
+interface BatchCountResponse {
+  /**
+   * Total number of items across all requested flyers.
+   */
+  count: number;
+}
+
+/**
+ * Response for tracking confirmation.
+ */
+interface TrackingResponse {
+  /**
+   * Confirmation message.
+   */
+  message: string;
+}
+
+// ============================================================================
+// FLYER CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for flyer management endpoints.
+ *
+ * Provides read-only access to flyers and flyer items for all users,
+ * with analytics tracking capabilities.
+ */
+@Route('flyers')
+@Tags('Flyers')
+export class FlyerController extends BaseController {
+  // ==========================================================================
+  // LIST ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get all flyers.
+   *
+   * Returns a paginated list of all flyers, ordered by creation date (newest first).
+   * Includes store information and location data for each flyer.
+   *
+   * @summary List all flyers
+   * @param limit Maximum number of flyers to return (default: 20)
+   * @param offset Number of flyers to skip for pagination (default: 0)
+   * @returns Array of flyer objects with store information
+   */
+  @Get()
+  @SuccessResponse(200, 'List of flyers retrieved successfully')
+  public async getFlyers(
+    @Request() req: ExpressRequest,
+    @Query() limit?: number,
+    @Query() offset?: number,
+  ): Promise<SuccessResponseType<FlyerDto[]>> {
+    // Apply defaults and bounds for pagination
+    // Note: Using offset-based pagination to match existing API behavior
+    const normalizedLimit = Math.min(100, Math.max(1, Math.floor(limit ?? 20)));
+    const normalizedOffset = Math.max(0, Math.floor(offset ?? 0));
+
+    const flyers = await db.flyerRepo.getFlyers(req.log, normalizedLimit, normalizedOffset);
+    // The Flyer type from the repository is structurally compatible with FlyerDto
+    // (FlyerDto just omits the GeoJSONPoint type that tsoa can't handle)
+    return this.success(flyers as unknown as FlyerDto[]);
+  }
+
+  // ==========================================================================
+  // SINGLE RESOURCE ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get flyer by ID.
+   *
+   * Returns a single flyer with its full details, including store information
+   * and all associated store locations.
+   *
+   * @summary Get a single flyer
+   * @param id The unique identifier of the flyer
+   * @returns The flyer object with full details
+   */
+  @Get('{id}')
+  @SuccessResponse(200, 'Flyer retrieved successfully')
+  @Response<ErrorResponse>(404, 'Flyer not found')
+  public async getFlyerById(
+    @Path() id: number,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<FlyerDto>> {
+    // getFlyerById throws NotFoundError if flyer doesn't exist
+    // The global error handler converts this to a 404 response
+    const flyer = await db.flyerRepo.getFlyerById(id);
+    req.log.debug({ flyerId: id }, 'Retrieved flyer by ID');
+    return this.success(flyer as unknown as FlyerDto);
+  }
+
+  /**
+   * Get flyer items.
+   *
+   * Returns all items (deals) associated with a specific flyer.
+   * Items are ordered by their position in the flyer.
+   *
+   * @summary Get items for a flyer
+   * @param id The unique identifier of the flyer
+   * @returns Array of flyer items with pricing and category information
+   */
+  @Get('{id}/items')
+  @SuccessResponse(200, 'Flyer items retrieved successfully')
+  @Response<ErrorResponse>(404, 'Flyer not found')
+  public async getFlyerItems(
+    @Path() id: number,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<FlyerItemDto[]>> {
+    const items = await db.flyerRepo.getFlyerItems(id, req.log);
+    req.log.debug({ flyerId: id, itemCount: items.length }, 'Retrieved flyer items');
+    return this.success(items as unknown as FlyerItemDto[]);
+  }
+
+  // ==========================================================================
+  // BATCH ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Batch fetch flyer items.
+   *
+   * Returns all items for multiple flyers in a single request.
+   * This is more efficient than making separate requests for each flyer.
+   * Items are ordered by flyer ID, then by item position within each flyer.
+   *
+   * @summary Batch fetch items for multiple flyers
+   * @param body Request body containing array of flyer IDs
+   * @returns Array of all flyer items for the requested flyers
+   */
+  @Post('items/batch-fetch')
+  @SuccessResponse(200, 'Batch items retrieved successfully')
+  public async batchFetchItems(
+    @Body() body: BatchFetchRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<FlyerItemDto[]>> {
+    const items = await db.flyerRepo.getFlyerItemsForFlyers(body.flyerIds, req.log);
+    req.log.debug(
+      { flyerCount: body.flyerIds.length, itemCount: items.length },
+      'Batch fetched flyer items',
+    );
+    return this.success(items as unknown as FlyerItemDto[]);
+  }
+
+  /**
+   * Batch count flyer items.
+   *
+   * Returns the total item count for multiple flyers.
+   * Useful for displaying item counts without fetching all item data.
+   *
+   * @summary Batch count items for multiple flyers
+   * @param body Request body containing array of flyer IDs
+   * @returns Object with total count of items across all requested flyers
+   */
+  @Post('items/batch-count')
+  @SuccessResponse(200, 'Batch count retrieved successfully')
+  public async batchCountItems(
+    @Body() body: BatchCountRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<BatchCountResponse>> {
+    const count = await db.flyerRepo.countFlyerItemsForFlyers(body.flyerIds, req.log);
+    req.log.debug({ flyerCount: body.flyerIds.length, totalItems: count }, 'Batch counted items');
+    return this.success({ count });
+  }
+
+  // ==========================================================================
+  // TRACKING ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Track item interaction.
+   *
+   * Records a view or click interaction with a flyer item for analytics purposes.
+   * This endpoint uses a fire-and-forget pattern: it returns immediately with a
+   * 202 Accepted response while the tracking is processed asynchronously.
+   *
+   * This design ensures that tracking does not slow down the user experience,
+   * and any tracking failures are logged but do not affect the client.
+   *
+   * @summary Track a flyer item interaction
+   * @param itemId The unique identifier of the flyer item
+   * @param body The interaction type (view or click)
+   * @returns Confirmation that tracking was accepted
+   */
+  @Post('items/{itemId}/track')
+  @SuccessResponse(202, 'Tracking accepted')
+  public async trackItemInteraction(
+    @Path() itemId: number,
+    @Body() body: TrackInteractionRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<TrackingResponse>> {
+    // Fire-and-forget: start the tracking operation but don't await it.
+    // We explicitly handle errors in the .catch() to prevent unhandled rejections
+    // and to log any failures without affecting the client response.
+    db.flyerRepo.trackFlyerItemInteraction(itemId, body.type, req.log).catch((error) => {
+      // Log the error but don't propagate it - this is intentional
+      // as tracking failures should not impact user experience
+      req.log.error(
+        { error, itemId, interactionType: body.type },
+        'Flyer item interaction tracking failed (fire-and-forget)',
+      );
+    });
+
+    // Return immediately with 202 Accepted
+    this.setStatus(202);
+    return this.success({ message: 'Tracking accepted' });
+  }
+}

src/controllers/gamification.controller.test.ts

@@ -0,0 +1,476 @@
+// src/controllers/gamification.controller.test.ts
+// ============================================================================
+// GAMIFICATION CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the GamificationController class. These tests verify controller
+// logic in isolation by mocking the gamification service.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+import type { UserAchievement, Achievement } from '../types';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  Middlewares: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock gamification service
+vi.mock('../services/gamificationService', () => ({
+  gamificationService: {
+    getAllAchievements: vi.fn(),
+    getLeaderboard: vi.fn(),
+    getUserAchievements: vi.fn(),
+    awardAchievement: vi.fn(),
+  },
+}));
+
+// Mock rate limiters
+vi.mock('../config/rateLimiters', () => ({
+  publicReadLimiter: (req: unknown, res: unknown, next: () => void) => next(),
+  userReadLimiter: (req: unknown, res: unknown, next: () => void) => next(),
+  adminTriggerLimiter: (req: unknown, res: unknown, next: () => void) => next(),
+}));
+
+// Import mocked modules after mock definitions
+import { gamificationService } from '../services/gamificationService';
+import { GamificationController } from './gamification.controller';
+
+// Cast mocked modules for type-safe access
+const mockedGamificationService = gamificationService as Mocked<typeof gamificationService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    role: 'user' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock admin user profile for testing.
+ */
+function createMockAdminProfile() {
+  return {
+    full_name: 'Admin User',
+    role: 'admin' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'admin-user-id',
+      email: 'admin@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock achievement.
+ * Matches the Achievement interface from types.ts
+ */
+function createMockAchievement(overrides: Record<string, unknown> = {}) {
+  return {
+    achievement_id: 1,
+    name: 'First-Upload',
+    description: 'Upload your first flyer',
+    points_value: 10,
+    icon: 'upload',
+    created_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock user achievement.
+ * Matches the (UserAchievement & Achievement) type returned by getUserAchievements
+ */
+function createMockUserAchievement(
+  overrides: Partial<UserAchievement & Achievement> = {},
+): UserAchievement & Achievement {
+  return {
+    // UserAchievement fields
+    user_id: 'test-user-id',
+    achievement_id: 1,
+    achieved_at: '2024-01-15T10:00:00.000Z',
+    // Achievement fields
+    name: 'First-Upload',
+    description: 'Upload your first flyer',
+    points_value: 10,
+    icon: 'upload',
+    created_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock leaderboard user.
+ * Matches the LeaderboardUser interface from types.ts
+ */
+function createMockLeaderboardUser(overrides: Record<string, unknown> = {}) {
+  return {
+    user_id: 'user-1',
+    full_name: 'Top User',
+    avatar_url: null,
+    points: 150,
+    rank: '1', // RANK() returns bigint which pg driver returns as string
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('GamificationController', () => {
+  let controller: GamificationController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new GamificationController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // PUBLIC ENDPOINTS
+  // ==========================================================================
+
+  describe('getAllAchievements()', () => {
+    it('should return all achievements', async () => {
+      // Arrange
+      const mockAchievements = [
+        createMockAchievement(),
+        createMockAchievement({ achievement_id: 2, name: 'Deal-Hunter', points_value: 25 }),
+      ];
+      const request = createMockRequest();
+
+      mockedGamificationService.getAllAchievements.mockResolvedValue(mockAchievements);
+
+      // Act
+      const result = await controller.getAllAchievements(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].name).toBe('First-Upload');
+      }
+      expect(mockedGamificationService.getAllAchievements).toHaveBeenCalledWith(expect.anything());
+    });
+
+    it('should return empty array when no achievements exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedGamificationService.getAllAchievements.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getAllAchievements(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should work without user authentication', async () => {
+      // Arrange
+      const mockAchievements = [createMockAchievement()];
+      const request = createMockRequest({ user: undefined });
+
+      mockedGamificationService.getAllAchievements.mockResolvedValue(mockAchievements);
+
+      // Act
+      const result = await controller.getAllAchievements(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('getLeaderboard()', () => {
+    it('should return leaderboard with default limit', async () => {
+      // Arrange
+      const mockLeaderboard = [
+        createMockLeaderboardUser(),
+        createMockLeaderboardUser({ user_id: 'user-2', rank: '2', points: 120 }),
+      ];
+      const request = createMockRequest();
+
+      mockedGamificationService.getLeaderboard.mockResolvedValue(mockLeaderboard);
+
+      // Act
+      const result = await controller.getLeaderboard(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].rank).toBe('1');
+      }
+      expect(mockedGamificationService.getLeaderboard).toHaveBeenCalledWith(
+        10, // default limit
+        expect.anything(),
+      );
+    });
+
+    it('should use custom limit', async () => {
+      // Arrange
+      const mockLeaderboard = [createMockLeaderboardUser()];
+      const request = createMockRequest();
+
+      mockedGamificationService.getLeaderboard.mockResolvedValue(mockLeaderboard);
+
+      // Act
+      await controller.getLeaderboard(request, 25);
+
+      // Assert
+      expect(mockedGamificationService.getLeaderboard).toHaveBeenCalledWith(25, expect.anything());
+    });
+
+    it('should cap limit at 50', async () => {
+      // Arrange
+      const mockLeaderboard = [createMockLeaderboardUser()];
+      const request = createMockRequest();
+
+      mockedGamificationService.getLeaderboard.mockResolvedValue(mockLeaderboard);
+
+      // Act
+      await controller.getLeaderboard(request, 100);
+
+      // Assert
+      expect(mockedGamificationService.getLeaderboard).toHaveBeenCalledWith(50, expect.anything());
+    });
+
+    it('should floor limit at 1', async () => {
+      // Arrange
+      const mockLeaderboard = [createMockLeaderboardUser()];
+      const request = createMockRequest();
+
+      mockedGamificationService.getLeaderboard.mockResolvedValue(mockLeaderboard);
+
+      // Act
+      await controller.getLeaderboard(request, 0);
+
+      // Assert
+      expect(mockedGamificationService.getLeaderboard).toHaveBeenCalledWith(1, expect.anything());
+    });
+
+    it('should work without user authentication', async () => {
+      // Arrange
+      const mockLeaderboard = [createMockLeaderboardUser()];
+      const request = createMockRequest({ user: undefined });
+
+      mockedGamificationService.getLeaderboard.mockResolvedValue(mockLeaderboard);
+
+      // Act
+      const result = await controller.getLeaderboard(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+  });
+
+  // ==========================================================================
+  // AUTHENTICATED USER ENDPOINTS
+  // ==========================================================================
+
+  describe('getMyAchievements()', () => {
+    it('should return user achievements', async () => {
+      // Arrange
+      const mockUserAchievements = [
+        createMockUserAchievement(),
+        createMockUserAchievement({ achievement_id: 2, name: 'Deal-Hunter' }),
+      ];
+      const request = createMockRequest();
+
+      mockedGamificationService.getUserAchievements.mockResolvedValue(mockUserAchievements);
+
+      // Act
+      const result = await controller.getMyAchievements(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].name).toBe('First-Upload');
+      }
+      expect(mockedGamificationService.getUserAchievements).toHaveBeenCalledWith(
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when user has no achievements', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedGamificationService.getUserAchievements.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getMyAchievements(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should use user ID from authenticated profile', async () => {
+      // Arrange
+      const customProfile = {
+        full_name: 'Custom User',
+        role: 'user' as const,
+        points: 0,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+        user: {
+          user_id: 'custom-user-id',
+          email: 'custom@example.com',
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+        },
+      };
+      const request = createMockRequest({ user: customProfile });
+
+      mockedGamificationService.getUserAchievements.mockResolvedValue([]);
+
+      // Act
+      await controller.getMyAchievements(request);
+
+      // Assert
+      expect(mockedGamificationService.getUserAchievements).toHaveBeenCalledWith(
+        'custom-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // ADMIN ENDPOINTS
+  // ==========================================================================
+
+  describe('awardAchievement()', () => {
+    it('should award achievement to user (admin)', async () => {
+      // Arrange
+      const request = createMockRequest({ user: createMockAdminProfile() });
+
+      mockedGamificationService.awardAchievement.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.awardAchievement(request, {
+        userId: 'target-user-id',
+        achievementName: 'First-Upload',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe(
+          "Successfully awarded 'First-Upload' to user target-user-id.",
+        );
+      }
+      expect(mockedGamificationService.awardAchievement).toHaveBeenCalledWith(
+        'target-user-id',
+        'First-Upload',
+        expect.anything(),
+      );
+    });
+
+    it('should include achievement name in success message', async () => {
+      // Arrange
+      const request = createMockRequest({ user: createMockAdminProfile() });
+
+      mockedGamificationService.awardAchievement.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.awardAchievement(request, {
+        userId: 'user-123',
+        achievementName: 'Deal-Hunter',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('Deal-Hunter');
+        expect(result.data.message).toContain('user-123');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedGamificationService.getAllAchievements.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getAllAchievements(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+  });
+});

src/controllers/gamification.controller.ts

@@ -0,0 +1,190 @@
+// src/controllers/gamification.controller.ts
+// ============================================================================
+// GAMIFICATION CONTROLLER
+// ============================================================================
+// Provides endpoints for the achievement and leaderboard system.
+// Includes public endpoints for viewing achievements and leaderboard,
+// authenticated endpoint for user's achievements, and admin endpoint
+// for manually awarding achievements.
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Route,
+  Tags,
+  Security,
+  Body,
+  Query,
+  Request,
+  SuccessResponse,
+  Response,
+  Middlewares,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { gamificationService } from '../services/gamificationService';
+import type { UserProfile, Achievement, UserAchievement, LeaderboardUser } from '../types';
+import { publicReadLimiter, userReadLimiter, adminTriggerLimiter } from '../config/rateLimiters';
+
+// ============================================================================
+// REQUEST/RESPONSE TYPES
+// ============================================================================
+
+/**
+ * Request body for awarding an achievement (admin only).
+ */
+interface AwardAchievementRequest {
+  /**
+   * User ID to award the achievement to.
+   * @format uuid
+   */
+  userId: string;
+  /**
+   * Name of the achievement to award.
+   * @example "First-Upload"
+   */
+  achievementName: string;
+}
+
+/**
+ * Response for successful achievement award.
+ */
+interface AwardAchievementResponse {
+  /** Success message */
+  message: string;
+}
+
+// ============================================================================
+// GAMIFICATION CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for achievement and leaderboard system.
+ *
+ * Public endpoints:
+ * - GET /achievements - List all available achievements
+ * - GET /achievements/leaderboard - View top users by points
+ *
+ * Authenticated endpoints:
+ * - GET /achievements/me - View user's earned achievements
+ *
+ * Admin endpoints:
+ * - POST /achievements/award - Manually award an achievement
+ */
+@Route('achievements')
+@Tags('Achievements')
+export class GamificationController extends BaseController {
+  // ==========================================================================
+  // PUBLIC ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get all achievements.
+   *
+   * Returns the master list of all available achievements in the system.
+   * This is a public endpoint.
+   *
+   * @summary Get all achievements
+   * @param request Express request for logging
+   * @returns List of all available achievements
+   */
+  @Get()
+  @Middlewares(publicReadLimiter)
+  @SuccessResponse(200, 'List of all achievements')
+  public async getAllAchievements(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<Achievement[]>> {
+    const achievements = await gamificationService.getAllAchievements(request.log);
+    return this.success(achievements);
+  }
+
+  /**
+   * Get leaderboard.
+   *
+   * Returns the top users ranked by total points earned from achievements.
+   * This is a public endpoint.
+   *
+   * @summary Get leaderboard
+   * @param request Express request for logging
+   * @param limit Maximum number of users to return (1-50, default: 10)
+   * @returns Leaderboard entries with user points
+   */
+  @Get('leaderboard')
+  @Middlewares(publicReadLimiter)
+  @SuccessResponse(200, 'Leaderboard entries')
+  public async getLeaderboard(
+    @Request() request: ExpressRequest,
+    @Query() limit?: number,
+  ): Promise<SuccessResponseType<LeaderboardUser[]>> {
+    // Normalize limit: default 10, min 1, max 50
+    const normalizedLimit = Math.min(50, Math.max(1, Math.floor(limit ?? 10)));
+
+    const leaderboard = await gamificationService.getLeaderboard(normalizedLimit, request.log);
+    return this.success(leaderboard);
+  }
+
+  // ==========================================================================
+  // AUTHENTICATED USER ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get my achievements.
+   *
+   * Returns all achievements earned by the authenticated user.
+   *
+   * @summary Get my achievements
+   * @param request Express request with authenticated user
+   * @returns List of user's earned achievements
+   */
+  @Get('me')
+  @Security('bearerAuth')
+  @Middlewares(userReadLimiter)
+  @SuccessResponse(200, "List of user's earned achievements")
+  @Response<ErrorResponse>(401, 'Unauthorized - JWT token missing or invalid')
+  public async getMyAchievements(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<(UserAchievement & Achievement)[]>> {
+    const userProfile = request.user as UserProfile;
+    const userAchievements = await gamificationService.getUserAchievements(
+      userProfile.user.user_id,
+      request.log,
+    );
+    return this.success(userAchievements);
+  }
+
+  // ==========================================================================
+  // ADMIN ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Award achievement to user (Admin only).
+   *
+   * Manually award an achievement to a specific user. Requires admin role.
+   *
+   * @summary Award achievement to user (Admin only)
+   * @param request Express request with authenticated admin user
+   * @param body User ID and achievement name
+   * @returns Success message
+   */
+  @Post('award')
+  @Security('bearerAuth', ['admin'])
+  @Middlewares(adminTriggerLimiter)
+  @SuccessResponse(200, 'Achievement awarded successfully')
+  @Response<ErrorResponse>(400, 'Invalid achievement name')
+  @Response<ErrorResponse>(401, 'Unauthorized - JWT token missing or invalid')
+  @Response<ErrorResponse>(403, 'Forbidden - User is not an admin')
+  @Response<ErrorResponse>(404, 'User or achievement not found')
+  public async awardAchievement(
+    @Request() request: ExpressRequest,
+    @Body() body: AwardAchievementRequest,
+  ): Promise<SuccessResponseType<AwardAchievementResponse>> {
+    await gamificationService.awardAchievement(body.userId, body.achievementName, request.log);
+    return this.success({
+      message: `Successfully awarded '${body.achievementName}' to user ${body.userId}.`,
+    });
+  }
+}

src/controllers/health.controller.test.ts

@@ -0,0 +1,769 @@
+// src/controllers/health.controller.test.ts
+// ============================================================================
+// HEALTH CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the HealthController class. These tests verify controller
+// logic in isolation by mocking external dependencies like database, Redis,
+// and file system access.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+// Mock all external dependencies before importing the controller module.
+// ============================================================================
+
+// Mock tsoa decorators and Controller class (required before controller import)
+// tsoa is used at compile-time for code generation but needs to be mocked for Vitest
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(_status: number): void {
+      // Mock setStatus
+    }
+  },
+  Get: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock database connection module
+vi.mock('../services/db/connection.db', () => ({
+  checkTablesExist: vi.fn(),
+  getPoolStatus: vi.fn(),
+  getPool: vi.fn(),
+}));
+
+// Mock file system module
+vi.mock('node:fs/promises', () => ({
+  default: {
+    access: vi.fn(),
+    constants: { W_OK: 1 },
+  },
+}));
+
+// Mock Redis connection from queue service
+vi.mock('../services/queueService.server', () => ({
+  connection: {
+    ping: vi.fn(),
+    get: vi.fn(),
+  },
+}));
+
+// Use vi.hoisted to create mock queue objects available during vi.mock hoisting
+const { mockQueuesModule } = vi.hoisted(() => {
+  const createMockQueue = () => ({
+    getJobCounts: vi.fn().mockResolvedValue({
+      waiting: 0,
+      active: 0,
+      failed: 0,
+      delayed: 0,
+    }),
+  });
+
+  return {
+    mockQueuesModule: {
+      flyerQueue: createMockQueue(),
+      emailQueue: createMockQueue(),
+      analyticsQueue: createMockQueue(),
+      weeklyAnalyticsQueue: createMockQueue(),
+      cleanupQueue: createMockQueue(),
+      tokenCleanupQueue: createMockQueue(),
+      receiptQueue: createMockQueue(),
+      expiryAlertQueue: createMockQueue(),
+      barcodeQueue: createMockQueue(),
+    },
+  };
+});
+
+// Mock the queues.server module
+vi.mock('../services/queues.server', () => mockQueuesModule);
+
+// Import mocked modules after mock definitions
+import * as dbConnection from '../services/db/connection.db';
+import { connection as redisConnection } from '../services/queueService.server';
+import fs from 'node:fs/promises';
+import { HealthController } from './health.controller';
+
+// Cast mocked modules for type-safe access
+const mockedDbConnection = dbConnection as Mocked<typeof dbConnection>;
+const mockedRedisConnection = redisConnection as Mocked<typeof redisConnection> & {
+  get: ReturnType<typeof vi.fn>;
+};
+const mockedFs = fs as Mocked<typeof fs>;
+
+// Cast queues module for test assertions
+const mockedQueues = mockQueuesModule as {
+  flyerQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  emailQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  analyticsQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  weeklyAnalyticsQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  cleanupQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  tokenCleanupQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  receiptQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  expiryAlertQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+  barcodeQueue: { getJobCounts: ReturnType<typeof vi.fn> };
+};
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('HealthController', () => {
+  let controller: HealthController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new HealthController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // BASIC HEALTH CHECKS
+  // ==========================================================================
+
+  describe('ping()', () => {
+    it('should return a pong response', async () => {
+      const result = await controller.ping();
+
+      expect(result.success).toBe(true);
+      expect(result.data).toEqual({ message: 'pong' });
+    });
+  });
+
+  // ==========================================================================
+  // KUBERNETES PROBES (ADR-020)
+  // ==========================================================================
+
+  describe('live()', () => {
+    it('should return ok status with timestamp', async () => {
+      const result = await controller.live();
+
+      expect(result.success).toBe(true);
+      expect(result.data.status).toBe('ok');
+      expect(result.data.timestamp).toBeDefined();
+      expect(() => new Date(result.data.timestamp)).not.toThrow();
+    });
+  });
+
+  describe('ready()', () => {
+    it('should return healthy status when all services are healthy', async () => {
+      // Arrange: Mock all services as healthy
+      const mockPool = { query: vi.fn().mockResolvedValue({ rows: [{ 1: 1 }] }) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 8,
+        waitingCount: 1,
+      });
+      mockedRedisConnection.ping.mockResolvedValue('PONG');
+      mockedFs.access.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.ready();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('healthy');
+        expect(result.data.services.database.status).toBe('healthy');
+        expect(result.data.services.redis.status).toBe('healthy');
+        expect(result.data.services.storage.status).toBe('healthy');
+        expect(result.data.uptime).toBeDefined();
+        expect(result.data.timestamp).toBeDefined();
+      }
+    });
+
+    it('should return degraded status when database pool has high waiting count', async () => {
+      // Arrange: Mock database as degraded (waitingCount > 3)
+      const mockPool = { query: vi.fn().mockResolvedValue({ rows: [{ 1: 1 }] }) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 2,
+        waitingCount: 5,
+      });
+      mockedRedisConnection.ping.mockResolvedValue('PONG');
+      mockedFs.access.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.ready();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('degraded');
+        expect(result.data.services.database.status).toBe('degraded');
+      }
+    });
+
+    it('should return unhealthy status when database is unavailable', async () => {
+      // Arrange: Mock database as unhealthy
+      const mockPool = { query: vi.fn().mockRejectedValue(new Error('Connection failed')) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedRedisConnection.ping.mockResolvedValue('PONG');
+      mockedFs.access.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.ready();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toBe('Service unhealthy');
+        const details = result.error.details as {
+          status: string;
+          services: { database: { status: string; message: string } };
+        };
+        expect(details.status).toBe('unhealthy');
+        expect(details.services.database.status).toBe('unhealthy');
+        expect(details.services.database.message).toBe('Connection failed');
+      }
+    });
+
+    it('should return unhealthy status when Redis is unavailable', async () => {
+      // Arrange: Mock Redis as unhealthy
+      const mockPool = { query: vi.fn().mockResolvedValue({ rows: [{ 1: 1 }] }) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 8,
+        waitingCount: 1,
+      });
+      mockedRedisConnection.ping.mockRejectedValue(new Error('Redis connection refused'));
+      mockedFs.access.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.ready();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        const details = result.error.details as {
+          status: string;
+          services: { redis: { status: string; message: string } };
+        };
+        expect(details.status).toBe('unhealthy');
+        expect(details.services.redis.status).toBe('unhealthy');
+        expect(details.services.redis.message).toBe('Redis connection refused');
+      }
+    });
+
+    it('should return unhealthy when Redis returns unexpected ping response', async () => {
+      // Arrange
+      const mockPool = { query: vi.fn().mockResolvedValue({ rows: [{ 1: 1 }] }) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 8,
+        waitingCount: 1,
+      });
+      mockedRedisConnection.ping.mockResolvedValue('UNEXPECTED');
+      mockedFs.access.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.ready();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        const details = result.error.details as {
+          services: { redis: { status: string; message: string } };
+        };
+        expect(details.services.redis.status).toBe('unhealthy');
+        expect(details.services.redis.message).toContain('Unexpected ping response');
+      }
+    });
+
+    it('should still return healthy when storage is unhealthy but critical services are healthy', async () => {
+      // Arrange: Storage unhealthy, but db and redis healthy
+      const mockPool = { query: vi.fn().mockResolvedValue({ rows: [{ 1: 1 }] }) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 8,
+        waitingCount: 1,
+      });
+      mockedRedisConnection.ping.mockResolvedValue('PONG');
+      mockedFs.access.mockRejectedValue(new Error('Permission denied'));
+
+      // Act
+      const result = await controller.ready();
+
+      // Assert: Storage is not critical, so should still be healthy/200
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.services.storage.status).toBe('unhealthy');
+      }
+    });
+
+    it('should handle database error with non-Error object', async () => {
+      // Arrange
+      const mockPool = { query: vi.fn().mockRejectedValue('String error') };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedRedisConnection.ping.mockResolvedValue('PONG');
+      mockedFs.access.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.ready();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        const details = result.error.details as { services: { database: { message: string } } };
+        expect(details.services.database.message).toBe('Database connection failed');
+      }
+    });
+  });
+
+  describe('startup()', () => {
+    it('should return started status when database is healthy', async () => {
+      // Arrange
+      const mockPool = { query: vi.fn().mockResolvedValue({ rows: [{ 1: 1 }] }) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 8,
+        waitingCount: 1,
+      });
+
+      // Act
+      const result = await controller.startup();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('started');
+        expect(result.data.database.status).toBe('healthy');
+        expect(result.data.timestamp).toBeDefined();
+      }
+    });
+
+    it('should return error when database is unhealthy during startup', async () => {
+      // Arrange
+      const mockPool = { query: vi.fn().mockRejectedValue(new Error('Database not ready')) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+
+      // Act
+      const result = await controller.startup();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toBe('Waiting for database connection');
+        const details = result.error.details as {
+          status: string;
+          database: { status: string; message: string };
+        };
+        expect(details.status).toBe('starting');
+        expect(details.database.status).toBe('unhealthy');
+        expect(details.database.message).toBe('Database not ready');
+      }
+    });
+
+    it('should return started with degraded database when pool has high waiting count', async () => {
+      // Arrange
+      const mockPool = { query: vi.fn().mockResolvedValue({ rows: [{ 1: 1 }] }) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 2,
+        waitingCount: 5,
+      });
+
+      // Act
+      const result = await controller.startup();
+
+      // Assert: Degraded is not unhealthy, so startup should succeed
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('started');
+        expect(result.data.database.status).toBe('degraded');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // INDIVIDUAL SERVICE HEALTH CHECKS
+  // ==========================================================================
+
+  describe('dbSchema()', () => {
+    it('should return success when all tables exist', async () => {
+      // Arrange
+      mockedDbConnection.checkTablesExist.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.dbSchema();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('All required database tables exist.');
+      }
+    });
+
+    it('should return error when tables are missing', async () => {
+      // Arrange
+      mockedDbConnection.checkTablesExist.mockResolvedValue(['missing_table_1', 'missing_table_2']);
+
+      // Act
+      const result = await controller.dbSchema();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toContain('Missing tables: missing_table_1, missing_table_2');
+      }
+    });
+  });
+
+  describe('storage()', () => {
+    it('should return success when storage is accessible', async () => {
+      // Arrange
+      mockedFs.access.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.storage();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('is accessible and writable');
+      }
+    });
+
+    it('should return error when storage is not accessible', async () => {
+      // Arrange
+      mockedFs.access.mockRejectedValue(new Error('EACCES: permission denied'));
+
+      // Act
+      const result = await controller.storage();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toContain('Storage check failed');
+      }
+    });
+  });
+
+  describe('dbPool()', () => {
+    it('should return success for a healthy pool status', async () => {
+      // Arrange
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 10,
+        idleCount: 8,
+        waitingCount: 1,
+      });
+
+      // Act
+      const result = await controller.dbPool();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toContain('Pool Status: 10 total, 8 idle, 1 waiting');
+        expect(result.data.totalCount).toBe(10);
+        expect(result.data.idleCount).toBe(8);
+        expect(result.data.waitingCount).toBe(1);
+      }
+    });
+
+    it('should return error for an unhealthy pool status', async () => {
+      // Arrange
+      mockedDbConnection.getPoolStatus.mockReturnValue({
+        totalCount: 20,
+        idleCount: 5,
+        waitingCount: 15,
+      });
+
+      // Act
+      const result = await controller.dbPool();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toContain('Pool may be under stress');
+        expect(result.error.message).toContain('Pool Status: 20 total, 5 idle, 15 waiting');
+      }
+    });
+  });
+
+  describe('time()', () => {
+    it('should return current server time, year, and week', async () => {
+      // Arrange
+      const fakeDate = new Date('2024-03-15T10:30:00.000Z');
+      vi.useFakeTimers();
+      vi.setSystemTime(fakeDate);
+
+      // Act
+      const result = await controller.time();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.currentTime).toBe('2024-03-15T10:30:00.000Z');
+        expect(result.data.year).toBe(2024);
+        expect(result.data.week).toBe(11);
+      }
+    });
+  });
+
+  describe('redis()', () => {
+    it('should return success when Redis ping is successful', async () => {
+      // Arrange
+      mockedRedisConnection.ping.mockResolvedValue('PONG');
+
+      // Act
+      const result = await controller.redis();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Redis connection is healthy.');
+      }
+    });
+
+    it('should return error when Redis ping fails', async () => {
+      // Arrange
+      mockedRedisConnection.ping.mockRejectedValue(new Error('Connection timed out'));
+
+      // Act
+      const result = await controller.redis();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toBe('Connection timed out');
+      }
+    });
+
+    it('should return error when Redis returns unexpected response', async () => {
+      // Arrange
+      mockedRedisConnection.ping.mockResolvedValue('OK');
+
+      // Act
+      const result = await controller.redis();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toContain('Unexpected Redis ping response: OK');
+      }
+    });
+  });
+
+  // ==========================================================================
+  // QUEUE HEALTH MONITORING (ADR-053)
+  // ==========================================================================
+
+  describe('queues()', () => {
+    // Helper function to set all queue mocks
+    const setAllQueueMocks = (jobCounts: {
+      waiting: number;
+      active: number;
+      failed: number;
+      delayed: number;
+    }) => {
+      mockedQueues.flyerQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.emailQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.analyticsQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.weeklyAnalyticsQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.cleanupQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.tokenCleanupQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.receiptQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.expiryAlertQueue.getJobCounts.mockResolvedValue(jobCounts);
+      mockedQueues.barcodeQueue.getJobCounts.mockResolvedValue(jobCounts);
+    };
+
+    it('should return healthy status when all queues and workers are healthy', async () => {
+      // Arrange
+      setAllQueueMocks({ waiting: 5, active: 2, failed: 1, delayed: 0 });
+
+      // Mock Redis heartbeat responses (all healthy)
+      const recentTimestamp = new Date(Date.now() - 10000).toISOString();
+      const heartbeatValue = JSON.stringify({
+        timestamp: recentTimestamp,
+        pid: 1234,
+        host: 'test-host',
+      });
+      mockedRedisConnection.get.mockResolvedValue(heartbeatValue);
+
+      // Act
+      const result = await controller.queues();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('healthy');
+        expect(result.data.queues['flyer-processing']).toEqual({
+          waiting: 5,
+          active: 2,
+          failed: 1,
+          delayed: 0,
+        });
+        expect(result.data.workers['flyer-processing']).toEqual({
+          alive: true,
+          lastSeen: recentTimestamp,
+          pid: 1234,
+          host: 'test-host',
+        });
+      }
+    });
+
+    it('should return unhealthy status when a queue is unavailable', async () => {
+      // Arrange: flyerQueue fails, others succeed
+      mockedQueues.flyerQueue.getJobCounts.mockRejectedValue(new Error('Redis connection lost'));
+
+      const healthyJobCounts = { waiting: 0, active: 0, failed: 0, delayed: 0 };
+      mockedQueues.emailQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+      mockedQueues.analyticsQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+      mockedQueues.weeklyAnalyticsQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+      mockedQueues.cleanupQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+      mockedQueues.tokenCleanupQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+      mockedQueues.receiptQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+      mockedQueues.expiryAlertQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+      mockedQueues.barcodeQueue.getJobCounts.mockResolvedValue(healthyJobCounts);
+
+      mockedRedisConnection.get.mockResolvedValue(null);
+
+      // Act
+      const result = await controller.queues();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.message).toBe('One or more queues or workers unavailable');
+        const details = result.error.details as {
+          status: string;
+          queues: Record<string, { error?: string }>;
+        };
+        expect(details.status).toBe('unhealthy');
+        expect(details.queues['flyer-processing']).toEqual({ error: 'Redis connection lost' });
+      }
+    });
+
+    it('should return unhealthy status when a worker heartbeat is stale', async () => {
+      // Arrange
+      const healthyJobCounts = { waiting: 0, active: 0, failed: 0, delayed: 0 };
+      setAllQueueMocks(healthyJobCounts);
+
+      // Stale heartbeat (> 60s ago)
+      const staleTimestamp = new Date(Date.now() - 120000).toISOString();
+      const staleHeartbeat = JSON.stringify({
+        timestamp: staleTimestamp,
+        pid: 1234,
+        host: 'test-host',
+      });
+
+      let callCount = 0;
+      mockedRedisConnection.get.mockImplementation(() => {
+        callCount++;
+        return Promise.resolve(callCount === 1 ? staleHeartbeat : null);
+      });
+
+      // Act
+      const result = await controller.queues();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        const details = result.error.details as {
+          status: string;
+          workers: Record<string, { alive: boolean }>;
+        };
+        expect(details.status).toBe('unhealthy');
+        expect(details.workers['flyer-processing']).toEqual({ alive: false });
+      }
+    });
+
+    it('should return unhealthy status when worker heartbeat is missing', async () => {
+      // Arrange
+      const healthyJobCounts = { waiting: 0, active: 0, failed: 0, delayed: 0 };
+      setAllQueueMocks(healthyJobCounts);
+      mockedRedisConnection.get.mockResolvedValue(null);
+
+      // Act
+      const result = await controller.queues();
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        const details = result.error.details as {
+          status: string;
+          workers: Record<string, { alive: boolean }>;
+        };
+        expect(details.status).toBe('unhealthy');
+        expect(details.workers['flyer-processing']).toEqual({ alive: false });
+      }
+    });
+
+    it('should handle Redis connection errors gracefully for heartbeat checks', async () => {
+      // Arrange
+      const healthyJobCounts = { waiting: 0, active: 0, failed: 0, delayed: 0 };
+      setAllQueueMocks(healthyJobCounts);
+      mockedRedisConnection.get.mockRejectedValue(new Error('Redis connection lost'));
+
+      // Act
+      const result = await controller.queues();
+
+      // Assert: Heartbeat fetch errors are treated as non-critical
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('healthy');
+        expect(result.data.workers['flyer-processing']).toEqual({
+          alive: false,
+          error: 'Redis connection lost',
+        });
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      const result = await controller.ping();
+
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use error helper for consistent error format', async () => {
+      // Arrange: Make database check fail
+      mockedDbConnection.checkTablesExist.mockResolvedValue(['missing_table']);
+
+      // Act
+      const result = await controller.dbSchema();
+
+      // Assert
+      expect(result).toHaveProperty('success', false);
+      expect(result).toHaveProperty('error');
+      if (!result.success) {
+        expect(result.error).toHaveProperty('code');
+        expect(result.error).toHaveProperty('message');
+      }
+    });
+
+    it('should set HTTP status codes via setStatus', async () => {
+      // Arrange: Make startup probe fail
+      const mockPool = { query: vi.fn().mockRejectedValue(new Error('No database')) };
+      mockedDbConnection.getPool.mockReturnValue(mockPool as never);
+
+      // Act
+      const result = await controller.startup();
+
+      // Assert: The controller called setStatus(503) internally
+      // We can verify this by checking the result structure is an error
+      expect(result.success).toBe(false);
+    });
+  });
+});

src/controllers/health.controller.ts

@@ -0,0 +1,673 @@
+// src/controllers/health.controller.ts
+// ============================================================================
+// HEALTH CONTROLLER
+// ============================================================================
+// Provides health check endpoints for monitoring the application state,
+// implementing ADR-020: Health Checks and Liveness/Readiness Probes.
+//
+// This controller exposes endpoints for:
+// - Liveness probe (/live) - Is the server process running?
+// - Readiness probe (/ready) - Is the server ready to accept traffic?
+// - Startup probe (/startup) - Has the server completed initialization?
+// - Individual service health checks (db, redis, storage, queues)
+// ============================================================================
+
+import { Get, Route, Tags, SuccessResponse, Response } from 'tsoa';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse, ServiceHealth } from './types';
+import { getPoolStatus, getPool, checkTablesExist } from '../services/db/connection.db';
+import { connection as redisConnection } from '../services/queueService.server';
+import {
+  flyerQueue,
+  emailQueue,
+  analyticsQueue,
+  weeklyAnalyticsQueue,
+  cleanupQueue,
+  tokenCleanupQueue,
+  receiptQueue,
+  expiryAlertQueue,
+  barcodeQueue,
+} from '../services/queues.server';
+import { getSimpleWeekAndYear } from '../utils/dateUtils';
+import fs from 'node:fs/promises';
+
+// ============================================================================
+// RESPONSE TYPES
+// ============================================================================
+// Types for health check responses that will appear in the OpenAPI spec.
+// ============================================================================
+
+/**
+ * Simple ping response.
+ */
+interface PingResponse {
+  message: string;
+}
+
+/**
+ * Liveness probe response.
+ */
+interface LivenessResponse {
+  status: 'ok';
+  timestamp: string;
+}
+
+/**
+ * Readiness probe response with service status.
+ */
+interface ReadinessResponse {
+  status: 'healthy' | 'degraded' | 'unhealthy';
+  timestamp: string;
+  uptime: number;
+  services: {
+    database: ServiceHealth;
+    redis: ServiceHealth;
+    storage: ServiceHealth;
+  };
+}
+
+/**
+ * Startup probe response.
+ */
+interface StartupResponse {
+  status: 'started' | 'starting';
+  timestamp: string;
+  database: ServiceHealth;
+}
+
+/**
+ * Database schema check response.
+ */
+interface DbSchemaResponse {
+  message: string;
+}
+
+/**
+ * Storage check response.
+ */
+interface StorageResponse {
+  message: string;
+}
+
+/**
+ * Database pool status response.
+ */
+interface DbPoolResponse {
+  message: string;
+  totalCount: number;
+  idleCount: number;
+  waitingCount: number;
+}
+
+/**
+ * Server time response.
+ */
+interface TimeResponse {
+  currentTime: string;
+  year: number;
+  week: number;
+}
+
+/**
+ * Redis health check response.
+ */
+interface RedisHealthResponse {
+  message: string;
+}
+
+/**
+ * Queue job counts.
+ */
+interface QueueJobCounts {
+  waiting: number;
+  active: number;
+  failed: number;
+  delayed: number;
+}
+
+/**
+ * Worker heartbeat status.
+ */
+interface WorkerHeartbeat {
+  alive: boolean;
+  lastSeen?: string;
+  pid?: number;
+  host?: string;
+  error?: string;
+}
+
+/**
+ * Queue health response with metrics and worker heartbeats.
+ */
+interface QueuesHealthResponse {
+  status: 'healthy' | 'unhealthy';
+  timestamp: string;
+  queues: Record<string, QueueJobCounts | { error: string }>;
+  workers: Record<string, WorkerHeartbeat>;
+}
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+// Reusable functions for checking service health.
+// ============================================================================
+
+/**
+ * Checks database connectivity with timing.
+ *
+ * @returns ServiceHealth object with database status and latency
+ */
+async function checkDatabase(): Promise<ServiceHealth> {
+  const start = Date.now();
+  try {
+    const pool = getPool();
+    await pool.query('SELECT 1');
+    const latency = Date.now() - start;
+    const poolStatus = getPoolStatus();
+
+    // Consider degraded if waiting connections > 3
+    const status = poolStatus.waitingCount > 3 ? 'degraded' : 'healthy';
+
+    return {
+      status,
+      latency,
+      details: {
+        totalConnections: poolStatus.totalCount,
+        idleConnections: poolStatus.idleCount,
+        waitingConnections: poolStatus.waitingCount,
+      } as Record<string, unknown>,
+    };
+  } catch (error) {
+    return {
+      status: 'unhealthy',
+      latency: Date.now() - start,
+      message: error instanceof Error ? error.message : 'Database connection failed',
+    };
+  }
+}
+
+/**
+ * Checks Redis connectivity with timing.
+ *
+ * @returns ServiceHealth object with Redis status and latency
+ */
+async function checkRedis(): Promise<ServiceHealth> {
+  const start = Date.now();
+  try {
+    const reply = await redisConnection.ping();
+    const latency = Date.now() - start;
+
+    if (reply === 'PONG') {
+      return { status: 'healthy', latency };
+    }
+    return {
+      status: 'unhealthy',
+      latency,
+      message: `Unexpected ping response: ${reply}`,
+    };
+  } catch (error) {
+    return {
+      status: 'unhealthy',
+      latency: Date.now() - start,
+      message: error instanceof Error ? error.message : 'Redis connection failed',
+    };
+  }
+}
+
+/**
+ * Checks storage accessibility with timing.
+ *
+ * @returns ServiceHealth object with storage status and latency
+ */
+async function checkStorage(): Promise<ServiceHealth> {
+  const storagePath =
+    process.env.STORAGE_PATH || '/var/www/flyer-crawler.projectium.com/flyer-images';
+  const start = Date.now();
+  try {
+    await fs.access(storagePath, fs.constants.W_OK);
+    return {
+      status: 'healthy',
+      latency: Date.now() - start,
+      details: { path: storagePath },
+    };
+  } catch {
+    return {
+      status: 'unhealthy',
+      latency: Date.now() - start,
+      message: `Storage not accessible: ${storagePath}`,
+    };
+  }
+}
+
+// ============================================================================
+// HEALTH CONTROLLER
+// ============================================================================
+
+/**
+ * Health check controller for monitoring application state.
+ *
+ * Provides endpoints for Kubernetes liveness/readiness/startup probes
+ * and individual service health checks per ADR-020.
+ */
+@Route('health')
+@Tags('Health')
+export class HealthController extends BaseController {
+  // ==========================================================================
+  // BASIC HEALTH CHECKS
+  // ==========================================================================
+
+  /**
+   * Simple ping endpoint.
+   *
+   * Returns a pong response to verify server is responsive.
+   * Use this for basic connectivity checks.
+   *
+   * @summary Simple ping endpoint
+   * @returns A pong response confirming the server is alive
+   */
+  @Get('ping')
+  @SuccessResponse(200, 'Server is responsive')
+  public async ping(): Promise<SuccessResponseType<PingResponse>> {
+    return this.success({ message: 'pong' });
+  }
+
+  // ==========================================================================
+  // KUBERNETES PROBES (ADR-020)
+  // ==========================================================================
+
+  /**
+   * Liveness probe.
+   *
+   * Returns 200 OK if the server process is running.
+   * If this fails, the orchestrator should restart the container.
+   * This endpoint is intentionally simple and has no external dependencies.
+   *
+   * @summary Liveness probe
+   * @returns Status indicating the server process is alive
+   */
+  @Get('live')
+  @SuccessResponse(200, 'Server process is alive')
+  public async live(): Promise<SuccessResponseType<LivenessResponse>> {
+    return this.success({
+      status: 'ok',
+      timestamp: new Date().toISOString(),
+    });
+  }
+
+  /**
+   * Readiness probe.
+   *
+   * Returns 200 OK if the server is ready to accept traffic.
+   * Checks all critical dependencies (database, Redis, storage).
+   * If this fails, the orchestrator should remove the container from the load balancer.
+   *
+   * @summary Readiness probe
+   * @returns Service health status for all critical dependencies
+   */
+  @Get('ready')
+  @SuccessResponse(200, 'Server is ready to accept traffic')
+  @Response<ErrorResponse>(503, 'Service is unhealthy and should not receive traffic')
+  public async ready(): Promise<SuccessResponseType<ReadinessResponse> | ErrorResponse> {
+    // Check all services in parallel for speed
+    const [database, redis, storage] = await Promise.all([
+      checkDatabase(),
+      checkRedis(),
+      checkStorage(),
+    ]);
+
+    // Determine overall status
+    // - 'healthy' if all critical services (db, redis) are healthy
+    // - 'degraded' if any service is degraded but none unhealthy
+    // - 'unhealthy' if any critical service is unhealthy
+    const criticalServices = [database, redis];
+    const allServices = [database, redis, storage];
+
+    let overallStatus: 'healthy' | 'degraded' | 'unhealthy' = 'healthy';
+
+    if (criticalServices.some((s) => s.status === 'unhealthy')) {
+      overallStatus = 'unhealthy';
+    } else if (allServices.some((s) => s.status === 'degraded')) {
+      overallStatus = 'degraded';
+    }
+
+    const response: ReadinessResponse = {
+      status: overallStatus,
+      timestamp: new Date().toISOString(),
+      uptime: process.uptime(),
+      services: {
+        database,
+        redis,
+        storage,
+      },
+    };
+
+    // Return appropriate HTTP status code
+    // 200 = healthy or degraded (can still handle traffic)
+    // 503 = unhealthy (should not receive traffic)
+    if (overallStatus === 'unhealthy') {
+      this.setStatus(503);
+      return this.error(this.ErrorCode.SERVICE_UNAVAILABLE, 'Service unhealthy', response);
+    }
+    return this.success(response);
+  }
+
+  /**
+   * Startup probe.
+   *
+   * Similar to readiness but used during container startup.
+   * The orchestrator will not send liveness/readiness probes until this succeeds.
+   * This allows for longer initialization times without triggering restarts.
+   *
+   * @summary Startup probe for container orchestration
+   * @returns Startup status with database health
+   */
+  @Get('startup')
+  @SuccessResponse(200, 'Server has started successfully')
+  @Response<ErrorResponse>(503, 'Server is still starting')
+  public async startup(): Promise<SuccessResponseType<StartupResponse> | ErrorResponse> {
+    // For startup, we only check database connectivity
+    // Redis and storage can be checked later in readiness
+    const database = await checkDatabase();
+
+    if (database.status === 'unhealthy') {
+      this.setStatus(503);
+      return this.error(this.ErrorCode.SERVICE_UNAVAILABLE, 'Waiting for database connection', {
+        status: 'starting',
+        database,
+      });
+    }
+
+    return this.success({
+      status: 'started',
+      timestamp: new Date().toISOString(),
+      database,
+    });
+  }
+
+  // ==========================================================================
+  // INDIVIDUAL SERVICE HEALTH CHECKS
+  // ==========================================================================
+
+  /**
+   * Database schema check.
+   *
+   * Checks if all essential database tables exist.
+   * This is a critical check to ensure the database schema is correctly set up.
+   *
+   * @summary Check database schema
+   * @returns Message confirming all required tables exist
+   */
+  @Get('db-schema')
+  @SuccessResponse(200, 'All required database tables exist')
+  @Response<ErrorResponse>(500, 'Database schema check failed')
+  public async dbSchema(): Promise<SuccessResponseType<DbSchemaResponse> | ErrorResponse> {
+    const requiredTables = ['users', 'profiles', 'flyers', 'flyer_items', 'stores'];
+    const missingTables = await checkTablesExist(requiredTables);
+
+    if (missingTables.length > 0) {
+      this.setStatus(500);
+      return this.error(
+        this.ErrorCode.INTERNAL_ERROR,
+        `Database schema check failed. Missing tables: ${missingTables.join(', ')}.`,
+      );
+    }
+
+    return this.success({ message: 'All required database tables exist.' });
+  }
+
+  /**
+   * Storage health check.
+   *
+   * Verifies that the application's file storage path is accessible and writable.
+   * This is important for features like file uploads.
+   *
+   * @summary Check storage accessibility
+   * @returns Message confirming storage is accessible
+   */
+  @Get('storage')
+  @SuccessResponse(200, 'Storage is accessible and writable')
+  @Response<ErrorResponse>(500, 'Storage check failed')
+  public async storage(): Promise<SuccessResponseType<StorageResponse> | ErrorResponse> {
+    const storagePath =
+      process.env.STORAGE_PATH || '/var/www/flyer-crawler.projectium.com/flyer-images';
+
+    try {
+      await fs.access(storagePath, fs.constants.W_OK);
+      return this.success({
+        message: `Storage directory '${storagePath}' is accessible and writable.`,
+      });
+    } catch {
+      this.setStatus(500);
+      return this.error(
+        this.ErrorCode.INTERNAL_ERROR,
+        `Storage check failed. Ensure the directory '${storagePath}' exists and is writable by the application.`,
+      );
+    }
+  }
+
+  /**
+   * Database pool status check.
+   *
+   * Checks the status of the database connection pool.
+   * This helps diagnose issues related to database connection saturation.
+   *
+   * @summary Check database connection pool status
+   * @returns Pool status with connection counts
+   */
+  @Get('db-pool')
+  @SuccessResponse(200, 'Database pool is healthy')
+  @Response<ErrorResponse>(500, 'Database pool may be under stress')
+  public async dbPool(): Promise<SuccessResponseType<DbPoolResponse> | ErrorResponse> {
+    const status = getPoolStatus();
+    const isHealthy = status.waitingCount < 5;
+    const message = `Pool Status: ${status.totalCount} total, ${status.idleCount} idle, ${status.waitingCount} waiting.`;
+
+    if (isHealthy) {
+      return this.success({
+        message,
+        totalCount: status.totalCount,
+        idleCount: status.idleCount,
+        waitingCount: status.waitingCount,
+      });
+    }
+
+    this.setStatus(500);
+    return this.error(
+      this.ErrorCode.INTERNAL_ERROR,
+      `Pool may be under stress. ${message}`,
+      status,
+    );
+  }
+
+  /**
+   * Server time check.
+   *
+   * Returns the server's current time, year, and week number.
+   * Useful for verifying time synchronization and for features dependent on week numbers.
+   *
+   * @summary Get server time and week number
+   * @returns Current server time with year and week number
+   */
+  @Get('time')
+  @SuccessResponse(200, 'Server time retrieved')
+  public async time(): Promise<SuccessResponseType<TimeResponse>> {
+    const now = new Date();
+    const { year, week } = getSimpleWeekAndYear(now);
+    return this.success({
+      currentTime: now.toISOString(),
+      year,
+      week,
+    });
+  }
+
+  /**
+   * Redis health check.
+   *
+   * Checks the health of the Redis connection.
+   *
+   * @summary Check Redis connectivity
+   * @returns Message confirming Redis is healthy
+   */
+  @Get('redis')
+  @SuccessResponse(200, 'Redis connection is healthy')
+  @Response<ErrorResponse>(500, 'Redis health check failed')
+  public async redis(): Promise<SuccessResponseType<RedisHealthResponse> | ErrorResponse> {
+    try {
+      const reply = await redisConnection.ping();
+      if (reply === 'PONG') {
+        return this.success({ message: 'Redis connection is healthy.' });
+      }
+      throw new Error(`Unexpected Redis ping response: ${reply}`);
+    } catch (error) {
+      this.setStatus(500);
+      const message = error instanceof Error ? error.message : 'Redis health check failed';
+      return this.error(this.ErrorCode.INTERNAL_ERROR, message);
+    }
+  }
+
+  // ==========================================================================
+  // QUEUE HEALTH MONITORING (ADR-053)
+  // ==========================================================================
+
+  /**
+   * Queue health and metrics with worker heartbeats.
+   *
+   * Returns job counts for all BullMQ queues and worker heartbeat status.
+   * Use this endpoint to monitor queue depths and detect stuck/frozen workers.
+   * Implements ADR-053: Worker Health Checks and Stalled Job Monitoring.
+   *
+   * @summary Queue health and metrics
+   * @returns Queue metrics and worker heartbeat status
+   */
+  @Get('queues')
+  @SuccessResponse(200, 'Queue metrics retrieved successfully')
+  @Response<ErrorResponse>(503, 'One or more queues or workers unavailable')
+  public async queues(): Promise<SuccessResponseType<QueuesHealthResponse> | ErrorResponse> {
+    // Define all queues to monitor
+    const queues = [
+      { name: 'flyer-processing', queue: flyerQueue },
+      { name: 'email-sending', queue: emailQueue },
+      { name: 'analytics-reporting', queue: analyticsQueue },
+      { name: 'weekly-analytics-reporting', queue: weeklyAnalyticsQueue },
+      { name: 'file-cleanup', queue: cleanupQueue },
+      { name: 'token-cleanup', queue: tokenCleanupQueue },
+      { name: 'receipt-processing', queue: receiptQueue },
+      { name: 'expiry-alerts', queue: expiryAlertQueue },
+      { name: 'barcode-detection', queue: barcodeQueue },
+    ];
+
+    // Fetch job counts for all queues in parallel
+    const queueMetrics = await Promise.all(
+      queues.map(async ({ name, queue }) => {
+        try {
+          const counts = await queue.getJobCounts();
+          return {
+            name,
+            counts: {
+              waiting: counts.waiting || 0,
+              active: counts.active || 0,
+              failed: counts.failed || 0,
+              delayed: counts.delayed || 0,
+            },
+          };
+        } catch (error) {
+          // If individual queue fails, return error state
+          return {
+            name,
+            error: error instanceof Error ? error.message : 'Unknown error',
+          };
+        }
+      }),
+    );
+
+    // Fetch worker heartbeats in parallel
+    const workerNames = queues.map((q) => q.name);
+    const workerHeartbeats = await Promise.all(
+      workerNames.map(async (name) => {
+        try {
+          const key = `worker:heartbeat:${name}`;
+          const value = await redisConnection.get(key);
+
+          if (!value) {
+            return { name, alive: false };
+          }
+
+          const heartbeat = JSON.parse(value) as {
+            timestamp: string;
+            pid: number;
+            host: string;
+          };
+          const lastSeenMs = new Date(heartbeat.timestamp).getTime();
+          const nowMs = Date.now();
+          const ageSeconds = (nowMs - lastSeenMs) / 1000;
+
+          // Consider alive if last heartbeat < 60 seconds ago
+          const alive = ageSeconds < 60;
+
+          return {
+            name,
+            alive,
+            lastSeen: heartbeat.timestamp,
+            pid: heartbeat.pid,
+            host: heartbeat.host,
+          };
+        } catch (error) {
+          // If heartbeat check fails, mark as unknown
+          return {
+            name,
+            alive: false,
+            error: error instanceof Error ? error.message : 'Unknown error',
+          };
+        }
+      }),
+    );
+
+    // Build response objects
+    const queuesData: Record<string, QueueJobCounts | { error: string }> = {};
+    const workersData: Record<string, WorkerHeartbeat> = {};
+    let hasErrors = false;
+
+    for (const metric of queueMetrics) {
+      if ('error' in metric && metric.error) {
+        queuesData[metric.name] = { error: metric.error };
+        hasErrors = true;
+      } else if ('counts' in metric && metric.counts) {
+        queuesData[metric.name] = metric.counts;
+      }
+    }
+
+    for (const heartbeat of workerHeartbeats) {
+      if ('error' in heartbeat && heartbeat.error) {
+        workersData[heartbeat.name] = { alive: false, error: heartbeat.error };
+      } else if (!heartbeat.alive) {
+        workersData[heartbeat.name] = { alive: false };
+        hasErrors = true;
+      } else {
+        workersData[heartbeat.name] = {
+          alive: heartbeat.alive,
+          lastSeen: heartbeat.lastSeen,
+          pid: heartbeat.pid,
+          host: heartbeat.host,
+        };
+      }
+    }
+
+    const response: QueuesHealthResponse = {
+      status: hasErrors ? 'unhealthy' : 'healthy',
+      timestamp: new Date().toISOString(),
+      queues: queuesData,
+      workers: workersData,
+    };
+
+    if (hasErrors) {
+      this.setStatus(503);
+      return this.error(
+        this.ErrorCode.SERVICE_UNAVAILABLE,
+        'One or more queues or workers unavailable',
+        response,
+      );
+    }
+
+    return this.success(response);
+  }
+}

src/controllers/inventory.controller.test.ts

@@ -0,0 +1,642 @@
+// src/controllers/inventory.controller.test.ts
+// ============================================================================
+// INVENTORY CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the InventoryController class. These tests verify controller
+// logic in isolation by mocking the expiry service.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+import {
+  createMockUserProfile,
+  createMockUserInventoryItem,
+  resetMockIds,
+} from '../tests/utils/mockFactories';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Put: () => () => {},
+  Delete: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock expiry service
+vi.mock('../services/expiryService.server', () => ({
+  getInventory: vi.fn(),
+  addInventoryItem: vi.fn(),
+  getExpiringItemsGrouped: vi.fn(),
+  getExpiringItems: vi.fn(),
+  getExpiredItems: vi.fn(),
+  getAlertSettings: vi.fn(),
+  updateAlertSettings: vi.fn(),
+  getRecipeSuggestionsForExpiringItems: vi.fn(),
+  getInventoryItemById: vi.fn(),
+  updateInventoryItem: vi.fn(),
+  deleteInventoryItem: vi.fn(),
+  markItemConsumed: vi.fn(),
+}));
+
+// Import mocked modules after mock definitions
+import * as expiryService from '../services/expiryService.server';
+import { InventoryController } from './inventory.controller';
+
+// Cast mocked modules for type-safe access
+const mockedExpiryService = expiryService as Mocked<typeof expiryService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ * Uses the shared createMockUserProfile factory from mockFactories.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile({ user: { user_id: 'test-user-id', email: 'test@example.com' } }),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock inventory item using the shared factory.
+ * Provides test-specific defaults.
+ */
+function createMockInventoryItem(overrides: Record<string, unknown> = {}) {
+  return createMockUserInventoryItem({
+    inventory_id: 1,
+    user_id: 'test-user-id',
+    item_name: 'Milk',
+    unit: 'L',
+    location: 'fridge',
+    ...overrides,
+  });
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('InventoryController', () => {
+  let controller: InventoryController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    resetMockIds();
+    controller = new InventoryController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // INVENTORY ITEM ENDPOINTS
+  // ==========================================================================
+
+  describe('getInventory()', () => {
+    it('should return inventory items with default pagination', async () => {
+      // Arrange
+      const mockResult = {
+        items: [createMockInventoryItem()],
+        total: 1,
+      };
+      const request = createMockRequest();
+
+      mockedExpiryService.getInventory.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getInventory(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      expect(mockedExpiryService.getInventory).toHaveBeenCalledWith(
+        expect.objectContaining({
+          user_id: 'test-user-id',
+          limit: 50,
+          offset: 0,
+        }),
+        expect.anything(),
+      );
+    });
+
+    it('should cap limit at 100', async () => {
+      // Arrange
+      const mockResult = { items: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedExpiryService.getInventory.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getInventory(request, 200);
+
+      // Assert
+      expect(mockedExpiryService.getInventory).toHaveBeenCalledWith(
+        expect.objectContaining({ limit: 100 }),
+        expect.anything(),
+      );
+    });
+
+    it('should support filtering by location', async () => {
+      // Arrange
+      const mockResult = { items: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedExpiryService.getInventory.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getInventory(request, 50, 0, 'fridge');
+
+      // Assert
+      expect(mockedExpiryService.getInventory).toHaveBeenCalledWith(
+        expect.objectContaining({ location: 'fridge' }),
+        expect.anything(),
+      );
+    });
+
+    it('should support search parameter', async () => {
+      // Arrange
+      const mockResult = { items: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedExpiryService.getInventory.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getInventory(
+        request,
+        50,
+        0,
+        undefined,
+        undefined,
+        undefined,
+        undefined,
+        'milk',
+      );
+
+      // Assert
+      expect(mockedExpiryService.getInventory).toHaveBeenCalledWith(
+        expect.objectContaining({ search: 'milk' }),
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('addInventoryItem()', () => {
+    it('should add an inventory item', async () => {
+      // Arrange
+      const mockItem = createMockInventoryItem();
+      const request = createMockRequest();
+
+      mockedExpiryService.addInventoryItem.mockResolvedValue(mockItem);
+
+      // Act
+      const result = await controller.addInventoryItem(request, {
+        item_name: 'Milk',
+        source: 'manual',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.item_name).toBe('Milk');
+      }
+    });
+
+    it('should log item addition', async () => {
+      // Arrange
+      const mockItem = createMockInventoryItem();
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedExpiryService.addInventoryItem.mockResolvedValue(mockItem);
+
+      // Act
+      await controller.addInventoryItem(request, {
+        item_name: 'Milk',
+        source: 'manual',
+      });
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { userId: 'test-user-id', itemName: 'Milk' },
+        'Adding item to inventory',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // EXPIRING ITEMS ENDPOINTS
+  // ==========================================================================
+
+  describe('getExpiringSummary()', () => {
+    it('should return expiring items grouped by urgency', async () => {
+      // Arrange
+      const mockItem = createMockInventoryItem();
+      const mockResult = {
+        expiring_today: [],
+        expiring_this_week: [mockItem],
+        expiring_this_month: [],
+        already_expired: [],
+        counts: {
+          today: 0,
+          this_week: 1,
+          this_month: 0,
+          expired: 0,
+          total: 1,
+        },
+      };
+      const request = createMockRequest();
+
+      mockedExpiryService.getExpiringItemsGrouped.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getExpiringSummary(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      expect(mockedExpiryService.getExpiringItemsGrouped).toHaveBeenCalledWith(
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('getExpiringItems()', () => {
+    it('should return expiring items with default 7 days', async () => {
+      // Arrange
+      const mockItems = [createMockInventoryItem()];
+      const request = createMockRequest();
+
+      mockedExpiryService.getExpiringItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getExpiringItems(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.total).toBe(1);
+      }
+      expect(mockedExpiryService.getExpiringItems).toHaveBeenCalledWith(
+        'test-user-id',
+        7,
+        expect.anything(),
+      );
+    });
+
+    it('should cap days at 90', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedExpiryService.getExpiringItems.mockResolvedValue([]);
+
+      // Act
+      await controller.getExpiringItems(request, 200);
+
+      // Assert
+      expect(mockedExpiryService.getExpiringItems).toHaveBeenCalledWith(
+        'test-user-id',
+        90,
+        expect.anything(),
+      );
+    });
+
+    it('should floor days at 1', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedExpiryService.getExpiringItems.mockResolvedValue([]);
+
+      // Act
+      await controller.getExpiringItems(request, 0);
+
+      // Assert
+      expect(mockedExpiryService.getExpiringItems).toHaveBeenCalledWith(
+        'test-user-id',
+        1,
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('getExpiredItems()', () => {
+    it('should return expired items', async () => {
+      // Arrange
+      const mockItems = [createMockInventoryItem({ expiry_date: '2023-12-01' })];
+      const request = createMockRequest();
+
+      mockedExpiryService.getExpiredItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getExpiredItems(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.items).toHaveLength(1);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // ALERT SETTINGS ENDPOINTS
+  // ==========================================================================
+
+  describe('getAlertSettings()', () => {
+    it('should return alert settings', async () => {
+      // Arrange
+      const mockSettings = [
+        {
+          expiry_alert_id: 1,
+          user_id: 'test-user-id',
+          alert_method: 'email' as const,
+          days_before_expiry: 3,
+          is_enabled: true,
+          last_alert_sent_at: null,
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+        },
+        {
+          expiry_alert_id: 2,
+          user_id: 'test-user-id',
+          alert_method: 'push' as const,
+          days_before_expiry: 1,
+          is_enabled: true,
+          last_alert_sent_at: null,
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+        },
+      ];
+      const request = createMockRequest();
+
+      mockedExpiryService.getAlertSettings.mockResolvedValue(mockSettings);
+
+      // Act
+      const result = await controller.getAlertSettings(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+    });
+  });
+
+  describe('updateAlertSettings()', () => {
+    it('should update alert settings', async () => {
+      // Arrange
+      const mockUpdated = {
+        expiry_alert_id: 1,
+        user_id: 'test-user-id',
+        alert_method: 'email' as const,
+        days_before_expiry: 5,
+        is_enabled: true,
+        last_alert_sent_at: null,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+      };
+      const request = createMockRequest();
+
+      mockedExpiryService.updateAlertSettings.mockResolvedValue(mockUpdated);
+
+      // Act
+      const result = await controller.updateAlertSettings('email', request, {
+        days_before_expiry: 5,
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.days_before_expiry).toBe(5);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // RECIPE SUGGESTIONS
+  // ==========================================================================
+
+  describe('getRecipeSuggestions()', () => {
+    it('should return recipe suggestions for expiring items', async () => {
+      // Arrange
+      const mockInventoryItem = createMockInventoryItem();
+      const mockResult = {
+        recipes: [
+          {
+            recipe_id: 1,
+            recipe_name: 'Test Recipe',
+            description: 'A test recipe description',
+            prep_time_minutes: 10,
+            cook_time_minutes: 20,
+            servings: 4,
+            photo_url: null,
+            matching_items: [mockInventoryItem],
+            match_count: 1,
+          },
+        ],
+        total: 1,
+        considered_items: [mockInventoryItem],
+      };
+      const request = createMockRequest();
+
+      mockedExpiryService.getRecipeSuggestionsForExpiringItems.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getRecipeSuggestions(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.recipes).toHaveLength(1);
+      }
+    });
+
+    it('should normalize pagination parameters', async () => {
+      // Arrange
+      const mockResult = { recipes: [], total: 0, considered_items: [] };
+      const request = createMockRequest();
+
+      mockedExpiryService.getRecipeSuggestionsForExpiringItems.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getRecipeSuggestions(request, 100, 100, 100);
+
+      // Assert
+      expect(mockedExpiryService.getRecipeSuggestionsForExpiringItems).toHaveBeenCalledWith(
+        'test-user-id',
+        90, // days capped at 90
+        expect.anything(),
+        { limit: 50, offset: 100 }, // limit capped at 50
+      );
+    });
+  });
+
+  // ==========================================================================
+  // INVENTORY ITEM BY ID ENDPOINTS
+  // ==========================================================================
+
+  describe('getInventoryItemById()', () => {
+    it('should return an inventory item by ID', async () => {
+      // Arrange
+      const mockItem = createMockInventoryItem();
+      const request = createMockRequest();
+
+      mockedExpiryService.getInventoryItemById.mockResolvedValue(mockItem);
+
+      // Act
+      const result = await controller.getInventoryItemById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.inventory_id).toBe(1);
+      }
+    });
+  });
+
+  describe('updateInventoryItem()', () => {
+    it('should update an inventory item', async () => {
+      // Arrange
+      const mockItem = createMockInventoryItem({ quantity: 2 });
+      const request = createMockRequest();
+
+      mockedExpiryService.updateInventoryItem.mockResolvedValue(mockItem);
+
+      // Act
+      const result = await controller.updateInventoryItem(1, request, { quantity: 2 });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.quantity).toBe(2);
+      }
+    });
+
+    it('should reject update with no fields provided', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act & Assert
+      await expect(controller.updateInventoryItem(1, request, {})).rejects.toThrow(
+        'At least one field to update must be provided.',
+      );
+    });
+  });
+
+  describe('deleteInventoryItem()', () => {
+    it('should delete an inventory item', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedExpiryService.deleteInventoryItem.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteInventoryItem(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockedExpiryService.deleteInventoryItem).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('markItemConsumed()', () => {
+    it('should mark an item as consumed', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedExpiryService.markItemConsumed.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.markItemConsumed(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockedExpiryService.markItemConsumed).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockItem = createMockInventoryItem();
+      const request = createMockRequest();
+
+      mockedExpiryService.getInventoryItemById.mockResolvedValue(mockItem);
+
+      // Act
+      const result = await controller.getInventoryItemById(1, request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use created helper for 201 responses', async () => {
+      // Arrange
+      const mockItem = createMockInventoryItem();
+      const request = createMockRequest();
+
+      mockedExpiryService.addInventoryItem.mockResolvedValue(mockItem);
+
+      // Act
+      const result = await controller.addInventoryItem(request, {
+        item_name: 'Test',
+        source: 'manual',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should use noContent helper for 204 responses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedExpiryService.deleteInventoryItem.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteInventoryItem(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+    });
+  });
+});

src/controllers/inventory.controller.ts

@@ -0,0 +1,535 @@
+// src/controllers/inventory.controller.ts
+// ============================================================================
+// INVENTORY CONTROLLER
+// ============================================================================
+// Provides endpoints for managing pantry inventory, expiry tracking, and alerts.
+// All endpoints require authentication.
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Put,
+  Delete,
+  Route,
+  Tags,
+  Security,
+  Body,
+  Path,
+  Query,
+  Request,
+  SuccessResponse,
+  Response,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import * as expiryService from '../services/expiryService.server';
+import type { UserProfile } from '../types';
+import type {
+  UserInventoryItem,
+  StorageLocation,
+  InventorySource,
+  ExpiryAlertSettings,
+  ExpiringItemsResponse,
+  AlertMethod,
+} from '../types/expiry';
+
+// ============================================================================
+// DTO TYPES FOR OPENAPI
+// ============================================================================
+
+/**
+ * Request body for adding an inventory item.
+ */
+interface AddInventoryItemRequest {
+  /** Link to products table */
+  product_id?: number;
+  /** Link to master grocery items */
+  master_item_id?: number;
+  /**
+   * Item name (required)
+   * @minLength 1
+   * @maxLength 255
+   */
+  item_name: string;
+  /** Quantity of item (default: 1) */
+  quantity?: number;
+  /**
+   * Unit of measurement
+   * @maxLength 50
+   */
+  unit?: string;
+  /** When the item was purchased (YYYY-MM-DD format) */
+  purchase_date?: string;
+  /** Expected expiry date (YYYY-MM-DD format) */
+  expiry_date?: string;
+  /** How the item is being added */
+  source: InventorySource;
+  /** Where the item will be stored */
+  location?: StorageLocation;
+  /**
+   * User notes
+   * @maxLength 500
+   */
+  notes?: string;
+}
+
+/**
+ * Request body for updating an inventory item.
+ * At least one field must be provided.
+ */
+interface UpdateInventoryItemRequest {
+  /** Updated quantity */
+  quantity?: number;
+  /**
+   * Updated unit
+   * @maxLength 50
+   */
+  unit?: string;
+  /** Updated expiry date (YYYY-MM-DD format) */
+  expiry_date?: string;
+  /** Updated storage location */
+  location?: StorageLocation;
+  /**
+   * Updated notes
+   * @maxLength 500
+   */
+  notes?: string;
+  /** Mark as consumed */
+  is_consumed?: boolean;
+}
+
+/**
+ * Request body for updating alert settings.
+ */
+interface UpdateAlertSettingsRequest {
+  /**
+   * Days before expiry to send alert
+   * @minimum 1
+   * @maximum 30
+   */
+  days_before_expiry?: number;
+  /** Whether this alert type is enabled */
+  is_enabled?: boolean;
+}
+
+/**
+ * Response for expiring items list.
+ */
+interface ExpiringItemsListResponse {
+  /** Array of expiring items */
+  items: UserInventoryItem[];
+  /** Total count of items */
+  total: number;
+}
+
+/**
+ * Response for recipe suggestions.
+ */
+interface RecipeSuggestionsResponse {
+  /** Recipes that use expiring items */
+  recipes: unknown[];
+  /** Total count for pagination */
+  total: number;
+  /** Items considered for matching */
+  considered_items: UserInventoryItem[];
+}
+
+// ============================================================================
+// INVENTORY CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for managing pantry inventory and expiry tracking.
+ *
+ * All endpoints require JWT authentication. Users can only access
+ * their own inventory - the user ID is extracted from the JWT token.
+ */
+@Route('inventory')
+@Tags('Inventory')
+@Security('bearerAuth')
+export class InventoryController extends BaseController {
+  // ==========================================================================
+  // INVENTORY ITEM ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get inventory items.
+   *
+   * Retrieves the user's pantry inventory with optional filtering and pagination.
+   *
+   * @summary Get inventory items
+   * @param request Express request with authenticated user
+   * @param limit Maximum number of items to return (default: 50, max: 100)
+   * @param offset Number of items to skip for pagination (default: 0)
+   * @param location Filter by storage location
+   * @param is_consumed Filter by consumed status
+   * @param expiring_within_days Filter items expiring within N days
+   * @param category_id Filter by category ID
+   * @param search Search by item name
+   * @param sort_by Sort field
+   * @param sort_order Sort direction
+   * @returns List of inventory items
+   */
+  @Get()
+  @SuccessResponse(200, 'Inventory items retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getInventory(
+    @Request() request: ExpressRequest,
+    @Query() limit?: number,
+    @Query() offset?: number,
+    @Query() location?: StorageLocation,
+    @Query() is_consumed?: boolean,
+    @Query() expiring_within_days?: number,
+    @Query() category_id?: number,
+    @Query() search?: string,
+    @Query() sort_by?: 'expiry_date' | 'purchase_date' | 'item_name' | 'created_at',
+    @Query() sort_order?: 'asc' | 'desc',
+  ): Promise<SuccessResponseType<unknown>> {
+    const userProfile = request.user as UserProfile;
+
+    // Normalize pagination parameters
+    const normalizedLimit = Math.min(100, Math.max(1, Math.floor(limit ?? 50)));
+    const normalizedOffset = Math.max(0, Math.floor(offset ?? 0));
+
+    const result = await expiryService.getInventory(
+      {
+        user_id: userProfile.user.user_id,
+        location,
+        is_consumed,
+        expiring_within_days,
+        category_id,
+        search,
+        limit: normalizedLimit,
+        offset: normalizedOffset,
+        sort_by,
+        sort_order,
+      },
+      request.log,
+    );
+
+    return this.success(result);
+  }
+
+  /**
+   * Add inventory item.
+   *
+   * Add a new item to the user's pantry inventory.
+   *
+   * @summary Add inventory item
+   * @param request Express request with authenticated user
+   * @param body Item data
+   * @returns The created inventory item
+   */
+  @Post()
+  @SuccessResponse(201, 'Item added to inventory')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async addInventoryItem(
+    @Request() request: ExpressRequest,
+    @Body() body: AddInventoryItemRequest,
+  ): Promise<SuccessResponseType<UserInventoryItem>> {
+    const userProfile = request.user as UserProfile;
+
+    request.log.info(
+      { userId: userProfile.user.user_id, itemName: body.item_name },
+      'Adding item to inventory',
+    );
+
+    const item = await expiryService.addInventoryItem(userProfile.user.user_id, body, request.log);
+    return this.created(item);
+  }
+
+  // ==========================================================================
+  // EXPIRING ITEMS ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get expiring items summary.
+   *
+   * Get items grouped by expiry urgency (today, this week, this month, expired).
+   *
+   * @summary Get expiring items summary
+   * @param request Express request with authenticated user
+   * @returns Expiring items grouped by urgency with counts
+   */
+  @Get('expiring/summary')
+  @SuccessResponse(200, 'Expiring items grouped by urgency')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getExpiringSummary(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ExpiringItemsResponse>> {
+    const userProfile = request.user as UserProfile;
+    const result = await expiryService.getExpiringItemsGrouped(
+      userProfile.user.user_id,
+      request.log,
+    );
+    return this.success(result);
+  }
+
+  /**
+   * Get expiring items.
+   *
+   * Get items expiring within a specified number of days.
+   *
+   * @summary Get expiring items
+   * @param request Express request with authenticated user
+   * @param days Number of days to look ahead (1-90, default: 7)
+   * @returns List of expiring items
+   */
+  @Get('expiring')
+  @SuccessResponse(200, 'Expiring items retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getExpiringItems(
+    @Request() request: ExpressRequest,
+    @Query() days?: number,
+  ): Promise<SuccessResponseType<ExpiringItemsListResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    // Normalize days parameter: default 7, min 1, max 90
+    const normalizedDays = Math.min(90, Math.max(1, Math.floor(days ?? 7)));
+
+    const items = await expiryService.getExpiringItems(
+      userProfile.user.user_id,
+      normalizedDays,
+      request.log,
+    );
+
+    return this.success({ items, total: items.length });
+  }
+
+  /**
+   * Get expired items.
+   *
+   * Get all items that have already expired.
+   *
+   * @summary Get expired items
+   * @param request Express request with authenticated user
+   * @returns List of expired items
+   */
+  @Get('expired')
+  @SuccessResponse(200, 'Expired items retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getExpiredItems(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ExpiringItemsListResponse>> {
+    const userProfile = request.user as UserProfile;
+    const items = await expiryService.getExpiredItems(userProfile.user.user_id, request.log);
+    return this.success({ items, total: items.length });
+  }
+
+  // ==========================================================================
+  // ALERT SETTINGS ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get alert settings.
+   *
+   * Get the user's expiry alert settings for all notification methods.
+   *
+   * @summary Get alert settings
+   * @param request Express request with authenticated user
+   * @returns Alert settings for all methods
+   */
+  @Get('alerts')
+  @SuccessResponse(200, 'Alert settings retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getAlertSettings(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ExpiryAlertSettings[]>> {
+    const userProfile = request.user as UserProfile;
+    const settings = await expiryService.getAlertSettings(userProfile.user.user_id, request.log);
+    return this.success(settings);
+  }
+
+  /**
+   * Update alert settings.
+   *
+   * Update alert settings for a specific notification method.
+   *
+   * @summary Update alert settings
+   * @param alertMethod The notification method to update (email, push, in_app)
+   * @param request Express request with authenticated user
+   * @param body Settings to update
+   * @returns Updated alert settings
+   */
+  @Put('alerts/{alertMethod}')
+  @SuccessResponse(200, 'Alert settings updated')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async updateAlertSettings(
+    @Path() alertMethod: AlertMethod,
+    @Request() request: ExpressRequest,
+    @Body() body: UpdateAlertSettingsRequest,
+  ): Promise<SuccessResponseType<ExpiryAlertSettings>> {
+    const userProfile = request.user as UserProfile;
+
+    const settings = await expiryService.updateAlertSettings(
+      userProfile.user.user_id,
+      alertMethod,
+      body,
+      request.log,
+    );
+
+    return this.success(settings);
+  }
+
+  // ==========================================================================
+  // RECIPE SUGGESTIONS ENDPOINT
+  // ==========================================================================
+
+  /**
+   * Get recipe suggestions for expiring items.
+   *
+   * Get recipes that use items expiring soon to reduce food waste.
+   *
+   * @summary Get recipe suggestions for expiring items
+   * @param request Express request with authenticated user
+   * @param days Consider items expiring within this many days (1-90, default: 7)
+   * @param limit Maximum number of recipes to return (1-50, default: 10)
+   * @param offset Number of recipes to skip for pagination (default: 0)
+   * @returns Recipe suggestions with matching expiring items
+   */
+  @Get('recipes/suggestions')
+  @SuccessResponse(200, 'Recipe suggestions retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getRecipeSuggestions(
+    @Request() request: ExpressRequest,
+    @Query() days?: number,
+    @Query() limit?: number,
+    @Query() offset?: number,
+  ): Promise<SuccessResponseType<RecipeSuggestionsResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    // Normalize parameters
+    const normalizedDays = Math.min(90, Math.max(1, Math.floor(days ?? 7)));
+    const normalizedLimit = Math.min(50, Math.max(1, Math.floor(limit ?? 10)));
+    const normalizedOffset = Math.max(0, Math.floor(offset ?? 0));
+
+    const result = await expiryService.getRecipeSuggestionsForExpiringItems(
+      userProfile.user.user_id,
+      normalizedDays,
+      request.log,
+      { limit: normalizedLimit, offset: normalizedOffset },
+    );
+
+    return this.success(result);
+  }
+
+  // ==========================================================================
+  // INVENTORY ITEM BY ID ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get inventory item by ID.
+   *
+   * Retrieve a specific inventory item.
+   *
+   * @summary Get inventory item by ID
+   * @param inventoryId The unique identifier of the inventory item
+   * @param request Express request with authenticated user
+   * @returns The inventory item
+   */
+  @Get('{inventoryId}')
+  @SuccessResponse(200, 'Inventory item retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Item not found')
+  public async getInventoryItemById(
+    @Path() inventoryId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<UserInventoryItem>> {
+    const userProfile = request.user as UserProfile;
+    const item = await expiryService.getInventoryItemById(
+      inventoryId,
+      userProfile.user.user_id,
+      request.log,
+    );
+    return this.success(item);
+  }
+
+  /**
+   * Update inventory item.
+   *
+   * Update an existing inventory item. At least one field must be provided.
+   *
+   * @summary Update inventory item
+   * @param inventoryId The unique identifier of the inventory item
+   * @param request Express request with authenticated user
+   * @param body Fields to update
+   * @returns The updated inventory item
+   */
+  @Put('{inventoryId}')
+  @SuccessResponse(200, 'Item updated')
+  @Response<ErrorResponse>(400, 'Validation error - at least one field required')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Item not found')
+  public async updateInventoryItem(
+    @Path() inventoryId: number,
+    @Request() request: ExpressRequest,
+    @Body() body: UpdateInventoryItemRequest,
+  ): Promise<SuccessResponseType<UserInventoryItem>> {
+    const userProfile = request.user as UserProfile;
+
+    // Validate at least one field is provided
+    if (Object.keys(body).length === 0) {
+      this.setStatus(400);
+      throw new Error('At least one field to update must be provided.');
+    }
+
+    const item = await expiryService.updateInventoryItem(
+      inventoryId,
+      userProfile.user.user_id,
+      body,
+      request.log,
+    );
+
+    return this.success(item);
+  }
+
+  /**
+   * Delete inventory item.
+   *
+   * Remove an item from the user's inventory.
+   *
+   * @summary Delete inventory item
+   * @param inventoryId The unique identifier of the inventory item
+   * @param request Express request with authenticated user
+   */
+  @Delete('{inventoryId}')
+  @SuccessResponse(204, 'Item deleted')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Item not found')
+  public async deleteInventoryItem(
+    @Path() inventoryId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<void> {
+    const userProfile = request.user as UserProfile;
+    await expiryService.deleteInventoryItem(inventoryId, userProfile.user.user_id, request.log);
+    return this.noContent();
+  }
+
+  /**
+   * Mark item as consumed.
+   *
+   * Mark an inventory item as consumed.
+   *
+   * @summary Mark item as consumed
+   * @param inventoryId The unique identifier of the inventory item
+   * @param request Express request with authenticated user
+   */
+  @Post('{inventoryId}/consume')
+  @SuccessResponse(204, 'Item marked as consumed')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Item not found')
+  public async markItemConsumed(
+    @Path() inventoryId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<void> {
+    const userProfile = request.user as UserProfile;
+    await expiryService.markItemConsumed(inventoryId, userProfile.user.user_id, request.log);
+    return this.noContent();
+  }
+}

src/controllers/personalization.controller.test.ts

@@ -0,0 +1,477 @@
+// src/controllers/personalization.controller.test.ts
+// ============================================================================
+// PERSONALIZATION CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the PersonalizationController class. These tests verify
+// controller logic in isolation by mocking the personalization repository.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Query: () => () => {},
+  Request: () => () => {},
+  Middlewares: () => () => {},
+  SuccessResponse: () => () => {},
+}));
+
+// Mock personalization repository
+vi.mock('../services/db/index.db', () => ({
+  personalizationRepo: {
+    getAllMasterItems: vi.fn(),
+    getDietaryRestrictions: vi.fn(),
+    getAppliances: vi.fn(),
+  },
+}));
+
+// Mock rate limiters
+vi.mock('../config/rateLimiters', () => ({
+  publicReadLimiter: (req: unknown, res: unknown, next: () => void) => next(),
+}));
+
+// Import mocked modules after mock definitions
+import * as db from '../services/db/index.db';
+import { PersonalizationController } from './personalization.controller';
+
+// Cast mocked modules for type-safe access
+const mockedPersonalizationRepo = db.personalizationRepo as Mocked<typeof db.personalizationRepo>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    res: {
+      set: vi.fn(),
+    },
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock master grocery item.
+ * Matches the MasterGroceryItem interface from types.ts
+ */
+function createMockMasterItem(overrides: Record<string, unknown> = {}) {
+  return {
+    master_grocery_item_id: 1,
+    name: 'Milk 2%',
+    category_id: 1,
+    category_name: 'Dairy & Eggs',
+    is_allergen: false,
+    allergy_info: null,
+    created_by: null,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock dietary restriction.
+ * Matches the DietaryRestriction interface from types.ts
+ */
+function createMockDietaryRestriction(overrides: Record<string, unknown> = {}) {
+  return {
+    dietary_restriction_id: 1,
+    name: 'Vegetarian',
+    type: 'diet' as const,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock appliance.
+ * Matches the Appliance interface from types.ts
+ */
+function createMockAppliance(overrides: Record<string, unknown> = {}) {
+  return {
+    appliance_id: 1,
+    name: 'Air Fryer',
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('PersonalizationController', () => {
+  let controller: PersonalizationController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new PersonalizationController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // MASTER ITEMS ENDPOINT
+  // ==========================================================================
+
+  describe('getMasterItems()', () => {
+    it('should return master items without pagination', async () => {
+      // Arrange
+      const mockResult = {
+        items: [
+          createMockMasterItem(),
+          createMockMasterItem({ master_grocery_item_id: 2, name: 'Bread' }),
+        ],
+        total: 2,
+      };
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getMasterItems(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.items).toHaveLength(2);
+        expect(result.data.total).toBe(2);
+      }
+      expect(mockedPersonalizationRepo.getAllMasterItems).toHaveBeenCalledWith(
+        expect.anything(),
+        undefined, // no limit
+        0, // default offset
+      );
+    });
+
+    it('should support pagination with limit and offset', async () => {
+      // Arrange
+      const mockResult = {
+        items: [createMockMasterItem()],
+        total: 100,
+      };
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getMasterItems(request, 50, 100);
+
+      // Assert
+      expect(mockedPersonalizationRepo.getAllMasterItems).toHaveBeenCalledWith(
+        expect.anything(),
+        50,
+        100,
+      );
+    });
+
+    it('should cap limit at 500', async () => {
+      // Arrange
+      const mockResult = { items: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getMasterItems(request, 1000, 0);
+
+      // Assert
+      expect(mockedPersonalizationRepo.getAllMasterItems).toHaveBeenCalledWith(
+        expect.anything(),
+        500,
+        0,
+      );
+    });
+
+    it('should floor limit at 1', async () => {
+      // Arrange
+      const mockResult = { items: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getMasterItems(request, 0, 0);
+
+      // Assert
+      expect(mockedPersonalizationRepo.getAllMasterItems).toHaveBeenCalledWith(
+        expect.anything(),
+        1,
+        0,
+      );
+    });
+
+    it('should floor offset at 0', async () => {
+      // Arrange
+      const mockResult = { items: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getMasterItems(request, 50, -10);
+
+      // Assert
+      expect(mockedPersonalizationRepo.getAllMasterItems).toHaveBeenCalledWith(
+        expect.anything(),
+        50,
+        0,
+      );
+    });
+
+    it('should set cache control header', async () => {
+      // Arrange
+      const mockSet = vi.fn();
+      const request = createMockRequest({
+        res: { set: mockSet } as unknown as ExpressRequest['res'],
+      });
+      const mockResult = { items: [], total: 0 };
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getMasterItems(request);
+
+      // Assert
+      expect(mockSet).toHaveBeenCalledWith('Cache-Control', 'public, max-age=3600');
+    });
+
+    it('should log request details', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+      const mockResult = { items: [], total: 0 };
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getMasterItems(request, 100, 50);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        expect.objectContaining({
+          limit: 100,
+          offset: 50,
+        }),
+        'Fetching master items list from database...',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // DIETARY RESTRICTIONS ENDPOINT
+  // ==========================================================================
+
+  describe('getDietaryRestrictions()', () => {
+    it('should return dietary restrictions', async () => {
+      // Arrange
+      const mockRestrictions = [
+        createMockDietaryRestriction(),
+        createMockDietaryRestriction({ dietary_restriction_id: 2, name: 'Vegan' }),
+        createMockDietaryRestriction({ dietary_restriction_id: 3, name: 'Gluten-Free' }),
+      ];
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getDietaryRestrictions.mockResolvedValue(mockRestrictions);
+
+      // Act
+      const result = await controller.getDietaryRestrictions(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(3);
+        expect(result.data[0].name).toBe('Vegetarian');
+      }
+      expect(mockedPersonalizationRepo.getDietaryRestrictions).toHaveBeenCalledWith(
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when no restrictions exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getDietaryRestrictions.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getDietaryRestrictions(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should set cache control header', async () => {
+      // Arrange
+      const mockSet = vi.fn();
+      const request = createMockRequest({
+        res: { set: mockSet } as unknown as ExpressRequest['res'],
+      });
+
+      mockedPersonalizationRepo.getDietaryRestrictions.mockResolvedValue([]);
+
+      // Act
+      await controller.getDietaryRestrictions(request);
+
+      // Assert
+      expect(mockSet).toHaveBeenCalledWith('Cache-Control', 'public, max-age=3600');
+    });
+  });
+
+  // ==========================================================================
+  // APPLIANCES ENDPOINT
+  // ==========================================================================
+
+  describe('getAppliances()', () => {
+    it('should return appliances', async () => {
+      // Arrange
+      const mockAppliances = [
+        createMockAppliance(),
+        createMockAppliance({ appliance_id: 2, name: 'Instant Pot' }),
+        createMockAppliance({ appliance_id: 3, name: 'Stand Mixer' }),
+      ];
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAppliances.mockResolvedValue(mockAppliances);
+
+      // Act
+      const result = await controller.getAppliances(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(3);
+        expect(result.data[0].name).toBe('Air Fryer');
+      }
+      expect(mockedPersonalizationRepo.getAppliances).toHaveBeenCalledWith(expect.anything());
+    });
+
+    it('should return empty array when no appliances exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAppliances.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getAppliances(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should set cache control header', async () => {
+      // Arrange
+      const mockSet = vi.fn();
+      const request = createMockRequest({
+        res: { set: mockSet } as unknown as ExpressRequest['res'],
+      });
+
+      mockedPersonalizationRepo.getAppliances.mockResolvedValue([]);
+
+      // Act
+      await controller.getAppliances(request);
+
+      // Assert
+      expect(mockSet).toHaveBeenCalledWith('Cache-Control', 'public, max-age=3600');
+    });
+  });
+
+  // ==========================================================================
+  // PUBLIC ACCESS (NO AUTH REQUIRED)
+  // ==========================================================================
+
+  describe('Public access', () => {
+    it('should work without user authentication for master items', async () => {
+      // Arrange
+      const mockResult = { items: [createMockMasterItem()], total: 1 };
+      const request = createMockRequest({ user: undefined });
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getMasterItems(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should work without user authentication for dietary restrictions', async () => {
+      // Arrange
+      const request = createMockRequest({ user: undefined });
+
+      mockedPersonalizationRepo.getDietaryRestrictions.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getDietaryRestrictions(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should work without user authentication for appliances', async () => {
+      // Arrange
+      const request = createMockRequest({ user: undefined });
+
+      mockedPersonalizationRepo.getAppliances.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getAppliances(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockResult = { items: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedPersonalizationRepo.getAllMasterItems.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getMasterItems(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+  });
+});

src/controllers/personalization.controller.ts

@@ -0,0 +1,150 @@
+// src/controllers/personalization.controller.ts
+// ============================================================================
+// PERSONALIZATION CONTROLLER
+// ============================================================================
+// Provides endpoints for personalization data including master grocery items,
+// dietary restrictions, and kitchen appliances. These are public endpoints
+// used by the frontend for dropdown/selection components.
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import { Get, Route, Tags, Query, Request, SuccessResponse, Middlewares } from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType } from './types';
+import * as db from '../services/db/index.db';
+import type { MasterGroceryItem, DietaryRestriction, Appliance } from '../types';
+import { publicReadLimiter } from '../config/rateLimiters';
+
+// ============================================================================
+// RESPONSE TYPES
+// ============================================================================
+
+/**
+ * Response for paginated master items list.
+ */
+interface MasterItemsResponse {
+  /** Array of master grocery items */
+  items: MasterGroceryItem[];
+  /** Total count of all items */
+  total: number;
+}
+
+// ============================================================================
+// PERSONALIZATION CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for personalization reference data.
+ *
+ * All endpoints are public and do not require authentication.
+ * Data is used for dropdown/selection components in the UI.
+ *
+ * Responses are cached for 1 hour (Cache-Control header) as this
+ * reference data changes infrequently.
+ */
+@Route('personalization')
+@Tags('Personalization')
+export class PersonalizationController extends BaseController {
+  // ==========================================================================
+  // MASTER ITEMS ENDPOINT
+  // ==========================================================================
+
+  /**
+   * Get master items list.
+   *
+   * Get the master list of all grocery items with optional pagination.
+   * Response is cached for 1 hour as this data changes infrequently.
+   *
+   * @summary Get master items list
+   * @param request Express request for logging and response headers
+   * @param limit Maximum number of items to return (max: 500). If omitted, returns all items.
+   * @param offset Number of items to skip for pagination (default: 0)
+   * @returns Paginated list of master grocery items with total count
+   */
+  @Get('master-items')
+  @Middlewares(publicReadLimiter)
+  @SuccessResponse(200, 'List of master grocery items with total count')
+  public async getMasterItems(
+    @Request() request: ExpressRequest,
+    @Query() limit?: number,
+    @Query() offset?: number,
+  ): Promise<SuccessResponseType<MasterItemsResponse>> {
+    // Normalize parameters
+    const normalizedLimit =
+      limit !== undefined ? Math.min(500, Math.max(1, Math.floor(limit))) : undefined;
+    const normalizedOffset = Math.max(0, Math.floor(offset ?? 0));
+
+    // Log database call for tracking
+    request.log.info(
+      { limit: normalizedLimit, offset: normalizedOffset },
+      'Fetching master items list from database...',
+    );
+
+    // Set cache control header - data changes rarely
+    request.res?.set('Cache-Control', 'public, max-age=3600');
+
+    const result = await db.personalizationRepo.getAllMasterItems(
+      request.log,
+      normalizedLimit,
+      normalizedOffset,
+    );
+
+    return this.success(result);
+  }
+
+  // ==========================================================================
+  // DIETARY RESTRICTIONS ENDPOINT
+  // ==========================================================================
+
+  /**
+   * Get dietary restrictions.
+   *
+   * Get the master list of all available dietary restrictions.
+   * Response is cached for 1 hour.
+   *
+   * @summary Get dietary restrictions
+   * @param request Express request for logging and response headers
+   * @returns List of all dietary restrictions
+   */
+  @Get('dietary-restrictions')
+  @Middlewares(publicReadLimiter)
+  @SuccessResponse(200, 'List of all dietary restrictions')
+  public async getDietaryRestrictions(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<DietaryRestriction[]>> {
+    // Set cache control header - data changes rarely
+    request.res?.set('Cache-Control', 'public, max-age=3600');
+
+    const restrictions = await db.personalizationRepo.getDietaryRestrictions(request.log);
+    return this.success(restrictions);
+  }
+
+  // ==========================================================================
+  // APPLIANCES ENDPOINT
+  // ==========================================================================
+
+  /**
+   * Get kitchen appliances.
+   *
+   * Get the master list of all available kitchen appliances.
+   * Response is cached for 1 hour.
+   *
+   * @summary Get kitchen appliances
+   * @param request Express request for logging and response headers
+   * @returns List of all kitchen appliances
+   */
+  @Get('appliances')
+  @Middlewares(publicReadLimiter)
+  @SuccessResponse(200, 'List of all kitchen appliances')
+  public async getAppliances(
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<Appliance[]>> {
+    // Set cache control header - data changes rarely
+    request.res?.set('Cache-Control', 'public, max-age=3600');
+
+    const appliances = await db.personalizationRepo.getAppliances(request.log);
+    return this.success(appliances);
+  }
+}

src/controllers/placeholder.controller.ts

@@ -0,0 +1,43 @@
+/**
+ * Placeholder controller for tsoa configuration verification.
+ *
+ * This minimal controller exists only to verify that tsoa is correctly configured.
+ * It should be removed once actual controllers are implemented.
+ *
+ * @see ADR-055 for the OpenAPI specification migration plan
+ */
+import { Controller, Get, Route, Tags } from 'tsoa';
+
+/**
+ * Placeholder response type for configuration verification.
+ */
+interface PlaceholderResponse {
+  message: string;
+  configured: boolean;
+}
+
+/**
+ * Placeholder controller for verifying tsoa configuration.
+ *
+ * This controller is temporary and should be removed once actual
+ * API controllers are implemented using tsoa decorators.
+ */
+@Route('_tsoa')
+@Tags('Internal')
+export class PlaceholderController extends Controller {
+  /**
+   * Verify tsoa configuration is working.
+   *
+   * This endpoint exists only for configuration verification and
+   * should be removed in production.
+   *
+   * @returns A simple message confirming tsoa is configured
+   */
+  @Get('verify')
+  public async verify(): Promise<PlaceholderResponse> {
+    return {
+      message: 'tsoa is correctly configured',
+      configured: true,
+    };
+  }
+}

src/controllers/price.controller.test.ts

@@ -0,0 +1,383 @@
+// src/controllers/price.controller.test.ts
+// ============================================================================
+// PRICE CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the PriceController class. These tests verify controller
+// logic in isolation by mocking the price repository.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock price repository
+vi.mock('../services/db/price.db', () => ({
+  priceRepo: {
+    getPriceHistory: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import { priceRepo } from '../services/db/price.db';
+import { PriceController } from './price.controller';
+
+// Cast mocked modules for type-safe access
+const mockedPriceRepo = priceRepo as Mocked<typeof priceRepo>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    role: 'user' as const,
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+    },
+  };
+}
+
+/**
+ * Creates a mock price history data point.
+ * Matches the PriceHistoryData interface from types.ts
+ */
+function createMockPriceHistoryData(overrides: Record<string, unknown> = {}) {
+  return {
+    master_item_id: 1,
+    price_in_cents: 350,
+    date: '2024-01-15',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('PriceController', () => {
+  let controller: PriceController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new PriceController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // GET PRICE HISTORY
+  // ==========================================================================
+
+  describe('getPriceHistory()', () => {
+    it('should return price history for specified items', async () => {
+      // Arrange
+      const mockPriceHistory = [
+        createMockPriceHistoryData(),
+        createMockPriceHistoryData({ date: '2024-01-08', price_in_cents: 399 }),
+        createMockPriceHistoryData({ master_item_id: 2, price_in_cents: 450 }),
+      ];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: [1, 2],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(3);
+        expect(result.data[0].price_in_cents).toBe(350);
+      }
+      expect(mockedPriceRepo.getPriceHistory).toHaveBeenCalledWith(
+        [1, 2],
+        expect.anything(),
+        1000, // default limit
+        0, // default offset
+      );
+    });
+
+    it('should use default limit and offset when not provided', async () => {
+      // Arrange
+      const mockPriceHistory = [createMockPriceHistoryData()];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      await controller.getPriceHistory(request, {
+        masterItemIds: [1],
+      });
+
+      // Assert
+      expect(mockedPriceRepo.getPriceHistory).toHaveBeenCalledWith([1], expect.anything(), 1000, 0);
+    });
+
+    it('should use custom limit and offset', async () => {
+      // Arrange
+      const mockPriceHistory = [createMockPriceHistoryData()];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      await controller.getPriceHistory(request, {
+        masterItemIds: [1],
+        limit: 500,
+        offset: 100,
+      });
+
+      // Assert
+      expect(mockedPriceRepo.getPriceHistory).toHaveBeenCalledWith(
+        [1],
+        expect.anything(),
+        500,
+        100,
+      );
+    });
+
+    it('should return error when masterItemIds is empty', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: [],
+      });
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should return error when masterItemIds is not an array', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: null as unknown as number[],
+      });
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should normalize limit to at least 1', async () => {
+      // Arrange
+      const mockPriceHistory = [createMockPriceHistoryData()];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      await controller.getPriceHistory(request, {
+        masterItemIds: [1],
+        limit: 0,
+      });
+
+      // Assert
+      expect(mockedPriceRepo.getPriceHistory).toHaveBeenCalledWith(
+        [1],
+        expect.anything(),
+        1, // floored to 1
+        0,
+      );
+    });
+
+    it('should normalize offset to at least 0', async () => {
+      // Arrange
+      const mockPriceHistory = [createMockPriceHistoryData()];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      await controller.getPriceHistory(request, {
+        masterItemIds: [1],
+        offset: -10,
+      });
+
+      // Assert
+      expect(mockedPriceRepo.getPriceHistory).toHaveBeenCalledWith(
+        [1],
+        expect.anything(),
+        1000,
+        0, // floored to 0
+      );
+    });
+
+    it('should log request details', async () => {
+      // Arrange
+      const mockPriceHistory = [createMockPriceHistoryData()];
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      await controller.getPriceHistory(request, {
+        masterItemIds: [1, 2, 3],
+        limit: 100,
+        offset: 50,
+      });
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        expect.objectContaining({
+          itemCount: 3,
+          limit: 100,
+          offset: 50,
+        }),
+        '[API /price-history] Received request for historical price data.',
+      );
+    });
+
+    it('should return empty array when no price history exists', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: [1],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should handle single item request', async () => {
+      // Arrange
+      const mockPriceHistory = [
+        createMockPriceHistoryData(),
+        createMockPriceHistoryData({ date: '2024-01-08' }),
+      ];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: [1],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+      expect(mockedPriceRepo.getPriceHistory).toHaveBeenCalledWith([1], expect.anything(), 1000, 0);
+    });
+
+    it('should handle multiple items request', async () => {
+      // Arrange
+      const mockPriceHistory = [
+        createMockPriceHistoryData({ master_item_id: 1 }),
+        createMockPriceHistoryData({ master_item_id: 2 }),
+        createMockPriceHistoryData({ master_item_id: 3 }),
+      ];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: [1, 2, 3, 4, 5],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      expect(mockedPriceRepo.getPriceHistory).toHaveBeenCalledWith(
+        [1, 2, 3, 4, 5],
+        expect.anything(),
+        1000,
+        0,
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockPriceHistory = [createMockPriceHistoryData()];
+      const request = createMockRequest();
+
+      mockedPriceRepo.getPriceHistory.mockResolvedValue(mockPriceHistory);
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: [1],
+      });
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use error helper for validation errors', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.getPriceHistory(request, {
+        masterItemIds: [],
+      });
+
+      // Assert
+      expect(result).toHaveProperty('success', false);
+    });
+  });
+});

src/controllers/price.controller.ts

@@ -0,0 +1,113 @@
+// src/controllers/price.controller.ts
+// ============================================================================
+// PRICE CONTROLLER
+// ============================================================================
+// Provides endpoints for retrieving historical price data for grocery items.
+// Used for price trend analysis and charting.
+//
+// All endpoints require authentication.
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import { Post, Route, Tags, Security, Body, Request, SuccessResponse, Response } from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { priceRepo } from '../services/db/price.db';
+import type { PriceHistoryData } from '../types';
+
+// ============================================================================
+// REQUEST/RESPONSE TYPES
+// ============================================================================
+
+/**
+ * Request body for fetching price history.
+ */
+interface PriceHistoryRequest {
+  /**
+   * Array of master item IDs to get price history for.
+   * Must be a non-empty array of positive integers.
+   */
+  masterItemIds: number[];
+  /**
+   * Maximum number of price points to return.
+   * @default 1000
+   */
+  limit?: number;
+  /**
+   * Number of price points to skip.
+   * @default 0
+   */
+  offset?: number;
+}
+
+// ============================================================================
+// PRICE CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for retrieving price history data.
+ *
+ * All endpoints require JWT authentication. Price history is fetched
+ * for specified master grocery items, useful for trend analysis and charting.
+ */
+@Route('price-history')
+@Tags('Price')
+@Security('bearerAuth')
+export class PriceController extends BaseController {
+  // ==========================================================================
+  // GET PRICE HISTORY
+  // ==========================================================================
+
+  /**
+   * Get price history for specified items.
+   *
+   * Fetches historical price data for a given list of master item IDs.
+   * Returns the price in cents and the start date of each flyer where
+   * the item appeared, ordered by master_item_id and date ascending.
+   *
+   * Use POST instead of GET because the list of item IDs can be large
+   * and would exceed URL length limits as query parameters.
+   *
+   * @summary Get price history
+   * @param request Express request with authenticated user
+   * @param body Request body with master item IDs and optional pagination
+   * @returns Historical price data for specified items
+   */
+  @Post()
+  @SuccessResponse(200, 'Historical price data for specified items')
+  @Response<ErrorResponse>(400, 'Validation error - masterItemIds must be a non-empty array')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getPriceHistory(
+    @Request() request: ExpressRequest,
+    @Body() body: PriceHistoryRequest,
+  ): Promise<SuccessResponseType<PriceHistoryData[]>> {
+    const { masterItemIds, limit = 1000, offset = 0 } = body;
+
+    // Validate masterItemIds
+    if (!Array.isArray(masterItemIds) || masterItemIds.length === 0) {
+      this.setStatus(400);
+      return this.error(
+        this.ErrorCode.VALIDATION_ERROR,
+        'masterItemIds must be a non-empty array of positive integers.',
+      ) as unknown as SuccessResponseType<PriceHistoryData[]>;
+    }
+
+    // Normalize limit and offset
+    const normalizedLimit = Math.max(1, Math.floor(limit));
+    const normalizedOffset = Math.max(0, Math.floor(offset));
+
+    request.log.info(
+      { itemCount: masterItemIds.length, limit: normalizedLimit, offset: normalizedOffset },
+      '[API /price-history] Received request for historical price data.',
+    );
+
+    const priceHistory = await priceRepo.getPriceHistory(
+      masterItemIds,
+      request.log,
+      normalizedLimit,
+      normalizedOffset,
+    );
+    return this.success(priceHistory);
+  }
+}

src/controllers/reactions.controller.test.ts

@@ -0,0 +1,539 @@
+// src/controllers/reactions.controller.test.ts
+// ============================================================================
+// REACTIONS CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the ReactionsController class. These tests verify controller
+// logic in isolation by mocking the reaction repository.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  Middlewares: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock reaction repository
+vi.mock('../services/db/index.db', () => ({
+  reactionRepo: {
+    getReactions: vi.fn(),
+    getReactionSummary: vi.fn(),
+    toggleReaction: vi.fn(),
+  },
+}));
+
+// Mock rate limiters
+vi.mock('../config/rateLimiters', () => ({
+  publicReadLimiter: (req: unknown, res: unknown, next: () => void) => next(),
+  reactionToggleLimiter: (req: unknown, res: unknown, next: () => void) => next(),
+}));
+
+// Import mocked modules after mock definitions
+import { reactionRepo } from '../services/db/index.db';
+import { ReactionsController } from './reactions.controller';
+
+// Cast mocked modules for type-safe access
+const mockedReactionRepo = reactionRepo as Mocked<typeof reactionRepo>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    role: 'user' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock user reaction.
+ * Matches the UserReaction interface from types.ts
+ */
+function createMockReaction(overrides: Record<string, unknown> = {}) {
+  return {
+    reaction_id: 1,
+    user_id: 'test-user-id',
+    entity_type: 'recipe',
+    entity_id: '123',
+    reaction_type: 'like',
+    created_at: '2024-01-15T10:00:00.000Z',
+    updated_at: '2024-01-15T10:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock reaction summary entry.
+ */
+function createMockReactionSummary(overrides: Record<string, unknown> = {}) {
+  return {
+    reaction_type: 'like',
+    count: 10,
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('ReactionsController', () => {
+  let controller: ReactionsController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new ReactionsController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // PUBLIC ENDPOINTS
+  // ==========================================================================
+
+  describe('getReactions()', () => {
+    it('should return reactions without filters', async () => {
+      // Arrange
+      const mockReactions = [
+        createMockReaction(),
+        createMockReaction({ reaction_id: 2, reaction_type: 'love' }),
+      ];
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactions.mockResolvedValue(mockReactions);
+
+      // Act
+      const result = await controller.getReactions(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+      expect(mockedReactionRepo.getReactions).toHaveBeenCalledWith(
+        { userId: undefined, entityType: undefined, entityId: undefined },
+        expect.anything(),
+      );
+    });
+
+    it('should filter by userId', async () => {
+      // Arrange
+      const mockReactions = [createMockReaction()];
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactions.mockResolvedValue(mockReactions);
+
+      // Act
+      await controller.getReactions(request, 'user-123');
+
+      // Assert
+      expect(mockedReactionRepo.getReactions).toHaveBeenCalledWith(
+        { userId: 'user-123', entityType: undefined, entityId: undefined },
+        expect.anything(),
+      );
+    });
+
+    it('should filter by entityType', async () => {
+      // Arrange
+      const mockReactions = [createMockReaction()];
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactions.mockResolvedValue(mockReactions);
+
+      // Act
+      await controller.getReactions(request, undefined, 'recipe');
+
+      // Assert
+      expect(mockedReactionRepo.getReactions).toHaveBeenCalledWith(
+        { userId: undefined, entityType: 'recipe', entityId: undefined },
+        expect.anything(),
+      );
+    });
+
+    it('should filter by entityId', async () => {
+      // Arrange
+      const mockReactions = [createMockReaction()];
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactions.mockResolvedValue(mockReactions);
+
+      // Act
+      await controller.getReactions(request, undefined, undefined, '123');
+
+      // Assert
+      expect(mockedReactionRepo.getReactions).toHaveBeenCalledWith(
+        { userId: undefined, entityType: undefined, entityId: '123' },
+        expect.anything(),
+      );
+    });
+
+    it('should support multiple filters', async () => {
+      // Arrange
+      const mockReactions = [createMockReaction()];
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactions.mockResolvedValue(mockReactions);
+
+      // Act
+      await controller.getReactions(request, 'user-123', 'recipe', '456');
+
+      // Assert
+      expect(mockedReactionRepo.getReactions).toHaveBeenCalledWith(
+        { userId: 'user-123', entityType: 'recipe', entityId: '456' },
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when no reactions exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactions.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getReactions(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should work without user authentication', async () => {
+      // Arrange
+      const mockReactions = [createMockReaction()];
+      const request = createMockRequest({ user: undefined });
+
+      mockedReactionRepo.getReactions.mockResolvedValue(mockReactions);
+
+      // Act
+      const result = await controller.getReactions(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('getReactionSummary()', () => {
+    it('should return reaction summary for an entity', async () => {
+      // Arrange
+      const mockSummary = [
+        createMockReactionSummary(),
+        createMockReactionSummary({ reaction_type: 'love', count: 5 }),
+      ];
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactionSummary.mockResolvedValue(mockSummary);
+
+      // Act
+      const result = await controller.getReactionSummary(request, 'recipe', '123');
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].reaction_type).toBe('like');
+        expect(result.data[0].count).toBe(10);
+      }
+      expect(mockedReactionRepo.getReactionSummary).toHaveBeenCalledWith(
+        'recipe',
+        '123',
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when no reactions exist for entity', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactionSummary.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getReactionSummary(request, 'recipe', '999');
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should work with different entity types', async () => {
+      // Arrange
+      const mockSummary = [createMockReactionSummary()];
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactionSummary.mockResolvedValue(mockSummary);
+
+      // Act
+      await controller.getReactionSummary(request, 'comment', '456');
+
+      // Assert
+      expect(mockedReactionRepo.getReactionSummary).toHaveBeenCalledWith(
+        'comment',
+        '456',
+        expect.anything(),
+      );
+    });
+
+    it('should work without user authentication', async () => {
+      // Arrange
+      const mockSummary = [createMockReactionSummary()];
+      const request = createMockRequest({ user: undefined });
+
+      mockedReactionRepo.getReactionSummary.mockResolvedValue(mockSummary);
+
+      // Act
+      const result = await controller.getReactionSummary(request, 'recipe', '123');
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+  });
+
+  // ==========================================================================
+  // AUTHENTICATED ENDPOINTS
+  // ==========================================================================
+
+  describe('toggleReaction()', () => {
+    it('should add reaction when it does not exist', async () => {
+      // Arrange
+      const mockReaction = createMockReaction();
+      const request = createMockRequest();
+
+      mockedReactionRepo.toggleReaction.mockResolvedValue(mockReaction);
+
+      // Act
+      const result = await controller.toggleReaction(request, {
+        entity_type: 'recipe',
+        entity_id: '123',
+        reaction_type: 'like',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Reaction added.');
+        expect((result.data as { reaction: typeof mockReaction }).reaction).toEqual(mockReaction);
+      }
+      expect(mockedReactionRepo.toggleReaction).toHaveBeenCalledWith(
+        {
+          user_id: 'test-user-id',
+          entity_type: 'recipe',
+          entity_id: '123',
+          reaction_type: 'like',
+        },
+        expect.anything(),
+      );
+    });
+
+    it('should remove reaction when it already exists', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedReactionRepo.toggleReaction.mockResolvedValue(null);
+
+      // Act
+      const result = await controller.toggleReaction(request, {
+        entity_type: 'recipe',
+        entity_id: '123',
+        reaction_type: 'like',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Reaction removed.');
+      }
+    });
+
+    it('should use user ID from authenticated profile', async () => {
+      // Arrange
+      const customProfile = {
+        full_name: 'Custom User',
+        role: 'user' as const,
+        points: 0,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+        user: {
+          user_id: 'custom-user-id',
+          email: 'custom@example.com',
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+        },
+      };
+      const request = createMockRequest({ user: customProfile });
+
+      mockedReactionRepo.toggleReaction.mockResolvedValue(null);
+
+      // Act
+      await controller.toggleReaction(request, {
+        entity_type: 'recipe',
+        entity_id: '123',
+        reaction_type: 'like',
+      });
+
+      // Assert
+      expect(mockedReactionRepo.toggleReaction).toHaveBeenCalledWith(
+        expect.objectContaining({ user_id: 'custom-user-id' }),
+        expect.anything(),
+      );
+    });
+
+    it('should support different reaction types', async () => {
+      // Arrange
+      const mockReaction = createMockReaction({ reaction_type: 'love' });
+      const request = createMockRequest();
+
+      mockedReactionRepo.toggleReaction.mockResolvedValue(mockReaction);
+
+      // Act
+      const result = await controller.toggleReaction(request, {
+        entity_type: 'recipe',
+        entity_id: '123',
+        reaction_type: 'love',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      expect(mockedReactionRepo.toggleReaction).toHaveBeenCalledWith(
+        expect.objectContaining({ reaction_type: 'love' }),
+        expect.anything(),
+      );
+    });
+
+    it('should support different entity types', async () => {
+      // Arrange
+      const mockReaction = createMockReaction({ entity_type: 'comment' });
+      const request = createMockRequest();
+
+      mockedReactionRepo.toggleReaction.mockResolvedValue(mockReaction);
+
+      // Act
+      await controller.toggleReaction(request, {
+        entity_type: 'comment',
+        entity_id: '456',
+        reaction_type: 'like',
+      });
+
+      // Assert
+      expect(mockedReactionRepo.toggleReaction).toHaveBeenCalledWith(
+        expect.objectContaining({ entity_type: 'comment', entity_id: '456' }),
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedReactionRepo.getReactions.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getReactions(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should set 201 status when reaction is added', async () => {
+      // Arrange
+      const mockReaction = createMockReaction();
+      const request = createMockRequest();
+
+      mockedReactionRepo.toggleReaction.mockResolvedValue(mockReaction);
+
+      // Act
+      const result = await controller.toggleReaction(request, {
+        entity_type: 'recipe',
+        entity_id: '123',
+        reaction_type: 'like',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Reaction added.');
+      }
+    });
+
+    it('should set 200 status when reaction is removed', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedReactionRepo.toggleReaction.mockResolvedValue(null);
+
+      // Act
+      const result = await controller.toggleReaction(request, {
+        entity_type: 'recipe',
+        entity_id: '123',
+        reaction_type: 'like',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Reaction removed.');
+      }
+    });
+  });
+});

src/controllers/reactions.controller.ts

@@ -0,0 +1,204 @@
+// src/controllers/reactions.controller.ts
+// ============================================================================
+// REACTIONS CONTROLLER
+// ============================================================================
+// Provides endpoints for user reactions on content (recipes, comments, etc.).
+// Includes public endpoints for viewing reactions and authenticated endpoint
+// for toggling reactions.
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Route,
+  Tags,
+  Security,
+  Body,
+  Query,
+  Request,
+  SuccessResponse,
+  Response,
+  Middlewares,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { reactionRepo } from '../services/db/index.db';
+import type { UserProfile, UserReaction } from '../types';
+import { publicReadLimiter, reactionToggleLimiter } from '../config/rateLimiters';
+
+// ============================================================================
+// REQUEST/RESPONSE TYPES
+// ============================================================================
+
+/**
+ * Request body for toggling a reaction.
+ */
+interface ToggleReactionRequest {
+  /**
+   * Entity type (e.g., 'recipe', 'comment')
+   * @minLength 1
+   */
+  entity_type: string;
+  /**
+   * Entity ID
+   * @minLength 1
+   */
+  entity_id: string;
+  /**
+   * Type of reaction (e.g., 'like', 'love')
+   * @minLength 1
+   */
+  reaction_type: string;
+}
+
+/**
+ * Response for toggling a reaction - when added.
+ */
+interface ReactionAddedResponse {
+  /** Success message */
+  message: string;
+  /** The created reaction */
+  reaction: UserReaction;
+}
+
+/**
+ * Response for toggling a reaction - when removed.
+ */
+interface ReactionRemovedResponse {
+  /** Success message */
+  message: string;
+}
+
+/**
+ * Reaction summary entry showing count by type.
+ */
+interface ReactionSummaryEntry {
+  /** Reaction type */
+  reaction_type: string;
+  /** Count of this reaction type */
+  count: number;
+}
+
+// ============================================================================
+// REACTIONS CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for user reactions on content.
+ *
+ * Public endpoints:
+ * - GET /reactions - Get reactions with optional filters
+ * - GET /reactions/summary - Get reaction summary for an entity
+ *
+ * Authenticated endpoints:
+ * - POST /reactions/toggle - Toggle (add/remove) a reaction
+ */
+@Route('reactions')
+@Tags('Reactions')
+export class ReactionsController extends BaseController {
+  // ==========================================================================
+  // PUBLIC ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get reactions.
+   *
+   * Fetches user reactions based on query filters. Supports filtering by
+   * userId, entityType, and entityId. All filters are optional.
+   *
+   * @summary Get reactions
+   * @param request Express request for logging
+   * @param userId Filter by user ID (UUID format)
+   * @param entityType Filter by entity type (e.g., 'recipe', 'comment')
+   * @param entityId Filter by entity ID
+   * @returns List of reactions matching filters
+   */
+  @Get()
+  @Middlewares(publicReadLimiter)
+  @SuccessResponse(200, 'List of reactions matching filters')
+  public async getReactions(
+    @Request() request: ExpressRequest,
+    @Query() userId?: string,
+    @Query() entityType?: string,
+    @Query() entityId?: string,
+  ): Promise<SuccessResponseType<UserReaction[]>> {
+    const reactions = await reactionRepo.getReactions(
+      { userId, entityType, entityId },
+      request.log,
+    );
+    return this.success(reactions);
+  }
+
+  /**
+   * Get reaction summary.
+   *
+   * Fetches a summary of reactions for a specific entity, showing
+   * the count of each reaction type.
+   *
+   * @summary Get reaction summary
+   * @param request Express request for logging
+   * @param entityType Entity type (e.g., 'recipe', 'comment') - required
+   * @param entityId Entity ID - required
+   * @returns Reaction summary with counts by type
+   */
+  @Get('summary')
+  @Middlewares(publicReadLimiter)
+  @SuccessResponse(200, 'Reaction summary with counts by type')
+  @Response<ErrorResponse>(400, 'Missing required query parameters')
+  public async getReactionSummary(
+    @Request() request: ExpressRequest,
+    @Query() entityType: string,
+    @Query() entityId: string,
+  ): Promise<SuccessResponseType<ReactionSummaryEntry[]>> {
+    const summary = await reactionRepo.getReactionSummary(entityType, entityId, request.log);
+    return this.success(summary);
+  }
+
+  // ==========================================================================
+  // AUTHENTICATED ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Toggle reaction.
+   *
+   * Toggles a user's reaction to an entity. If the reaction exists,
+   * it's removed; otherwise, it's added.
+   *
+   * @summary Toggle reaction
+   * @param request Express request with authenticated user
+   * @param body Reaction details
+   * @returns Reaction added (201) or removed (200) confirmation
+   */
+  @Post('toggle')
+  @Security('bearerAuth')
+  @Middlewares(reactionToggleLimiter)
+  @SuccessResponse(200, 'Reaction removed')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async toggleReaction(
+    @Request() request: ExpressRequest,
+    @Body() body: ToggleReactionRequest,
+  ): Promise<SuccessResponseType<ReactionAddedResponse | ReactionRemovedResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    const reactionData = {
+      user_id: userProfile.user.user_id,
+      entity_type: body.entity_type,
+      entity_id: body.entity_id,
+      reaction_type: body.reaction_type,
+    };
+
+    const result = await reactionRepo.toggleReaction(reactionData, request.log);
+
+    if (result) {
+      // Reaction was added
+      this.setStatus(201);
+      return this.success({ message: 'Reaction added.', reaction: result });
+    } else {
+      // Reaction was removed
+      return this.success({ message: 'Reaction removed.' });
+    }
+  }
+}

src/controllers/receipt.controller.test.ts

@@ -0,0 +1,673 @@
+// src/controllers/receipt.controller.test.ts
+// ============================================================================
+// RECEIPT CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the ReceiptController class. These tests verify controller
+// logic in isolation by mocking the receipt service and queue.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+import {
+  createMockReceiptScan,
+  createMockExpiryReceiptItem,
+  createMockReceiptProcessingLog,
+  createMockUserProfile,
+  resetMockIds,
+} from '../tests/utils/mockFactories';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Put: () => () => {},
+  Delete: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  FormField: () => () => {},
+  UploadedFile: () => () => {},
+  Middlewares: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock receipt service
+vi.mock('../services/receiptService.server', () => ({
+  getReceipts: vi.fn(),
+  createReceipt: vi.fn(),
+  getReceiptById: vi.fn(),
+  deleteReceipt: vi.fn(),
+  getReceiptItems: vi.fn(),
+  getUnaddedItems: vi.fn(),
+  updateReceiptItem: vi.fn(),
+  getProcessingLogs: vi.fn(),
+}));
+
+// Mock expiry service
+vi.mock('../services/expiryService.server', () => ({
+  addItemsFromReceipt: vi.fn(),
+}));
+
+// Mock receipt queue
+vi.mock('../services/queues.server', () => ({
+  receiptQueue: {
+    add: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import * as receiptService from '../services/receiptService.server';
+import * as expiryService from '../services/expiryService.server';
+import { receiptQueue } from '../services/queues.server';
+import { ReceiptController } from './receipt.controller';
+
+// Cast mocked modules for type-safe access
+const mockedReceiptService = receiptService as Mocked<typeof receiptService>;
+const mockedExpiryService = expiryService as Mocked<typeof expiryService>;
+const mockedReceiptQueue = receiptQueue as Mocked<typeof receiptQueue>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile({ user: { user_id: 'test-user-id', email: 'test@example.com' } }),
+    file: undefined,
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock receipt scan record using the shared factory.
+ */
+function createMockReceipt(overrides: Record<string, unknown> = {}) {
+  return createMockReceiptScan({
+    receipt_id: 1,
+    user_id: 'test-user-id',
+    receipt_image_url: '/uploads/receipt-123.jpg',
+    status: 'completed',
+    ...overrides,
+  });
+}
+
+/**
+ * Creates a mock receipt item using the shared factory.
+ */
+function createMockReceiptItem(overrides: Record<string, unknown> = {}) {
+  return createMockExpiryReceiptItem({
+    receipt_item_id: 1,
+    receipt_id: 1,
+    raw_item_description: 'Milk 2%',
+    master_item_id: 100,
+    product_id: 200,
+    status: 'matched',
+    ...overrides,
+  });
+}
+
+/**
+ * Creates a mock processing log record using the shared factory.
+ */
+function createMockProcessingLog(overrides: Record<string, unknown> = {}) {
+  return createMockReceiptProcessingLog({
+    log_id: 1,
+    receipt_id: 1,
+    ...overrides,
+  });
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('ReceiptController', () => {
+  let controller: ReceiptController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    resetMockIds();
+    controller = new ReceiptController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // RECEIPT MANAGEMENT ENDPOINTS
+  // ==========================================================================
+
+  describe('getReceipts()', () => {
+    it('should return receipts with default pagination', async () => {
+      // Arrange
+      const mockResult = {
+        receipts: [createMockReceipt()],
+        total: 1,
+      };
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceipts.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getReceipts(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.receipts).toHaveLength(1);
+        expect(result.data.total).toBe(1);
+      }
+      expect(mockedReceiptService.getReceipts).toHaveBeenCalledWith(
+        expect.objectContaining({
+          user_id: 'test-user-id',
+          limit: 50,
+          offset: 0,
+        }),
+        expect.anything(),
+      );
+    });
+
+    it('should cap limit at 100', async () => {
+      // Arrange
+      const mockResult = { receipts: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceipts.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getReceipts(request, 200);
+
+      // Assert
+      expect(mockedReceiptService.getReceipts).toHaveBeenCalledWith(
+        expect.objectContaining({ limit: 100 }),
+        expect.anything(),
+      );
+    });
+
+    it('should support filtering by status', async () => {
+      // Arrange
+      const mockResult = { receipts: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceipts.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getReceipts(request, 50, 0, 'completed');
+
+      // Assert
+      expect(mockedReceiptService.getReceipts).toHaveBeenCalledWith(
+        expect.objectContaining({ status: 'completed' }),
+        expect.anything(),
+      );
+    });
+
+    it('should support date range filtering', async () => {
+      // Arrange
+      const mockResult = { receipts: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceipts.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getReceipts(
+        request,
+        50,
+        0,
+        undefined,
+        undefined,
+        '2024-01-01',
+        '2024-01-31',
+      );
+
+      // Assert
+      expect(mockedReceiptService.getReceipts).toHaveBeenCalledWith(
+        expect.objectContaining({
+          from_date: '2024-01-01',
+          to_date: '2024-01-31',
+        }),
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('uploadReceipt()', () => {
+    it('should upload a receipt and queue for processing', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt({ status: 'pending' });
+      const mockFile = {
+        filename: 'receipt-123.jpg',
+        path: '/uploads/receipt-123.jpg',
+        mimetype: 'image/jpeg',
+        size: 1024,
+      };
+      const request = createMockRequest({ file: mockFile as Express.Multer.File });
+
+      mockedReceiptService.createReceipt.mockResolvedValue(mockReceipt);
+      mockedReceiptQueue.add.mockResolvedValue({ id: 'job-123' } as never);
+
+      // Act
+      const result = await controller.uploadReceipt(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.receipt_id).toBe(1);
+        expect(result.data.job_id).toBe('job-123');
+      }
+      expect(mockedReceiptService.createReceipt).toHaveBeenCalledWith(
+        'test-user-id',
+        '/uploads/receipt-123.jpg',
+        expect.anything(),
+        expect.objectContaining({}),
+      );
+      expect(mockedReceiptQueue.add).toHaveBeenCalledWith(
+        'process-receipt',
+        expect.objectContaining({
+          receiptId: 1,
+          userId: 'test-user-id',
+        }),
+        expect.anything(),
+      );
+    });
+
+    it('should reject when no file is uploaded', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act & Assert
+      await expect(controller.uploadReceipt(request)).rejects.toThrow('Receipt image is required.');
+    });
+
+    it('should support optional store location and transaction date', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt();
+      const mockFile = {
+        filename: 'receipt-123.jpg',
+        path: '/uploads/receipt-123.jpg',
+      };
+      const request = createMockRequest({ file: mockFile as Express.Multer.File });
+
+      mockedReceiptService.createReceipt.mockResolvedValue(mockReceipt);
+      mockedReceiptQueue.add.mockResolvedValue({ id: 'job-123' } as never);
+
+      // Act
+      await controller.uploadReceipt(request, 5, '2024-01-15');
+
+      // Assert
+      expect(mockedReceiptService.createReceipt).toHaveBeenCalledWith(
+        'test-user-id',
+        '/uploads/receipt-123.jpg',
+        expect.anything(),
+        {
+          storeLocationId: 5,
+          transactionDate: '2024-01-15',
+        },
+      );
+    });
+  });
+
+  describe('getReceiptById()', () => {
+    it('should return a receipt with its items', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt();
+      const mockItems = [createMockReceiptItem()];
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceiptById.mockResolvedValue(mockReceipt);
+      mockedReceiptService.getReceiptItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getReceiptById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.receipt.receipt_id).toBe(1);
+        expect(result.data.items).toHaveLength(1);
+      }
+    });
+  });
+
+  describe('deleteReceipt()', () => {
+    it('should delete a receipt', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedReceiptService.deleteReceipt.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteReceipt(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockedReceiptService.deleteReceipt).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('reprocessReceipt()', () => {
+    it('should queue a receipt for reprocessing', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt({ status: 'failed' });
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceiptById.mockResolvedValue(mockReceipt);
+      mockedReceiptQueue.add.mockResolvedValue({ id: 'job-456' } as never);
+
+      // Act
+      const result = await controller.reprocessReceipt(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.message).toBe('Receipt queued for reprocessing');
+        expect(result.data.receipt_id).toBe(1);
+        expect(result.data.job_id).toBe('job-456');
+      }
+      expect(mockedReceiptQueue.add).toHaveBeenCalledWith(
+        'process-receipt',
+        expect.objectContaining({
+          receiptId: 1,
+          imagePath: '/uploads/receipt-123.jpg',
+        }),
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // RECEIPT ITEMS ENDPOINTS
+  // ==========================================================================
+
+  describe('getReceiptItems()', () => {
+    it('should return receipt items', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt();
+      const mockItems = [createMockReceiptItem(), createMockReceiptItem({ receipt_item_id: 2 })];
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceiptById.mockResolvedValue(mockReceipt);
+      mockedReceiptService.getReceiptItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getReceiptItems(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.items).toHaveLength(2);
+        expect(result.data.total).toBe(2);
+      }
+    });
+  });
+
+  describe('getUnaddedItems()', () => {
+    it('should return unadded receipt items', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt();
+      const mockItems = [createMockReceiptItem({ status: 'unmatched' })];
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceiptById.mockResolvedValue(mockReceipt);
+      mockedReceiptService.getUnaddedItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getUnaddedItems(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.items).toHaveLength(1);
+        expect(result.data.total).toBe(1);
+      }
+    });
+  });
+
+  describe('updateReceiptItem()', () => {
+    it('should update a receipt item', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt();
+      // Use 'matched' as it's a valid ReceiptItemStatus
+      const mockUpdatedItem = createMockReceiptItem({ status: 'matched', match_confidence: 1.0 });
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceiptById.mockResolvedValue(mockReceipt);
+      mockedReceiptService.updateReceiptItem.mockResolvedValue(mockUpdatedItem);
+
+      // Act
+      const result = await controller.updateReceiptItem(1, 1, request, {
+        status: 'matched',
+        match_confidence: 1.0,
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('matched');
+        expect(result.data.match_confidence).toBe(1.0);
+      }
+    });
+
+    it('should reject update with no fields provided', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act & Assert
+      await expect(controller.updateReceiptItem(1, 1, request, {})).rejects.toThrow(
+        'At least one field to update must be provided.',
+      );
+    });
+  });
+
+  describe('confirmItems()', () => {
+    it('should confirm items and add to inventory', async () => {
+      // Arrange
+      const mockAddedItems = [
+        {
+          inventory_id: 1,
+          user_id: 'test-user-id',
+          product_id: null,
+          master_item_id: 100,
+          item_name: 'Milk',
+          quantity: 1,
+          unit: 'L',
+          purchase_date: '2024-01-15',
+          expiry_date: '2024-01-22',
+          source: 'receipt_scan' as const,
+          location: 'fridge' as const,
+          notes: null,
+          is_consumed: false,
+          consumed_at: null,
+          expiry_source: 'receipt' as const,
+          receipt_item_id: 1,
+          pantry_location_id: null,
+          notification_sent_at: null,
+          created_at: '2024-01-15T00:00:00.000Z',
+          updated_at: '2024-01-15T00:00:00.000Z',
+          days_until_expiry: 7,
+          expiry_status: 'fresh' as const,
+        },
+        {
+          inventory_id: 2,
+          user_id: 'test-user-id',
+          product_id: null,
+          master_item_id: 101,
+          item_name: 'Bread',
+          quantity: 1,
+          unit: 'loaf',
+          purchase_date: '2024-01-15',
+          expiry_date: '2024-01-20',
+          source: 'receipt_scan' as const,
+          location: 'pantry' as const,
+          notes: null,
+          is_consumed: false,
+          consumed_at: null,
+          expiry_source: 'receipt' as const,
+          receipt_item_id: 2,
+          pantry_location_id: null,
+          notification_sent_at: null,
+          created_at: '2024-01-15T00:00:00.000Z',
+          updated_at: '2024-01-15T00:00:00.000Z',
+          days_until_expiry: 5,
+          expiry_status: 'fresh' as const,
+        },
+      ];
+      const request = createMockRequest();
+
+      mockedExpiryService.addItemsFromReceipt.mockResolvedValue(mockAddedItems);
+
+      // Act
+      const result = await controller.confirmItems(1, request, {
+        items: [
+          { receipt_item_id: 1, include: true },
+          { receipt_item_id: 2, include: true },
+        ],
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.added_items).toHaveLength(2);
+        expect(result.data.count).toBe(2);
+      }
+      expect(mockedExpiryService.addItemsFromReceipt).toHaveBeenCalledWith(
+        'test-user-id',
+        1,
+        expect.arrayContaining([expect.objectContaining({ receipt_item_id: 1, include: true })]),
+        expect.anything(),
+      );
+    });
+
+    it('should log confirmation request', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedExpiryService.addItemsFromReceipt.mockResolvedValue([]);
+
+      // Act
+      await controller.confirmItems(1, request, {
+        items: [{ receipt_item_id: 1, include: true }],
+      });
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        expect.objectContaining({
+          userId: 'test-user-id',
+          receiptId: 1,
+          itemCount: 1,
+        }),
+        'Confirming receipt items for inventory',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // PROCESSING LOGS ENDPOINT
+  // ==========================================================================
+
+  describe('getProcessingLogs()', () => {
+    it('should return processing logs', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt();
+      const mockLogs = [
+        createMockProcessingLog({ status: 'started' }),
+        createMockProcessingLog({ log_id: 2, status: 'completed' }),
+      ];
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceiptById.mockResolvedValue(mockReceipt);
+      mockedReceiptService.getProcessingLogs.mockResolvedValue(mockLogs);
+
+      // Act
+      const result = await controller.getProcessingLogs(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.logs).toHaveLength(2);
+        expect(result.data.total).toBe(2);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockResult = { receipts: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedReceiptService.getReceipts.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getReceipts(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use created helper for 201 responses', async () => {
+      // Arrange
+      const mockReceipt = createMockReceipt();
+      const mockFile = {
+        filename: 'receipt.jpg',
+        path: '/uploads/receipt.jpg',
+      };
+      const request = createMockRequest({ file: mockFile as Express.Multer.File });
+
+      mockedReceiptService.createReceipt.mockResolvedValue(mockReceipt);
+      mockedReceiptQueue.add.mockResolvedValue({ id: 'job-1' } as never);
+
+      // Act
+      const result = await controller.uploadReceipt(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should use noContent helper for 204 responses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedReceiptService.deleteReceipt.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteReceipt(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+    });
+  });
+});

src/controllers/receipt.controller.ts

@@ -0,0 +1,578 @@
+// src/controllers/receipt.controller.ts
+// ============================================================================
+// RECEIPT CONTROLLER
+// ============================================================================
+// Provides endpoints for uploading, processing, and managing scanned receipts.
+// All endpoints require authentication.
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Put,
+  Delete,
+  Route,
+  Tags,
+  Security,
+  Body,
+  Path,
+  Query,
+  Request,
+  SuccessResponse,
+  Response,
+  FormField,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import * as receiptService from '../services/receiptService.server';
+import * as expiryService from '../services/expiryService.server';
+import { receiptQueue } from '../services/queues.server';
+import type { UserProfile } from '../types';
+import type {
+  ReceiptScan,
+  ReceiptItem,
+  ReceiptStatus,
+  ReceiptItemStatus,
+  ReceiptProcessingLogRecord,
+  StorageLocation,
+} from '../types/expiry';
+
+// ============================================================================
+// DTO TYPES FOR OPENAPI
+// ============================================================================
+
+/**
+ * Response for a receipt with its items.
+ */
+interface ReceiptWithItemsResponse {
+  /** The receipt record */
+  receipt: ReceiptScan;
+  /** Extracted items from the receipt */
+  items: ReceiptItem[];
+}
+
+/**
+ * Response for receipt items list.
+ */
+interface ReceiptItemsListResponse {
+  /** Array of receipt items */
+  items: ReceiptItem[];
+  /** Total count of items */
+  total: number;
+}
+
+/**
+ * Response for receipt upload.
+ */
+interface ReceiptUploadResponse extends ReceiptScan {
+  /** Background job ID for tracking processing */
+  job_id?: string;
+}
+
+/**
+ * Response for reprocessing a receipt.
+ */
+interface ReprocessResponse {
+  /** Success message */
+  message: string;
+  /** Receipt ID */
+  receipt_id: number;
+  /** Background job ID for tracking */
+  job_id?: string;
+}
+
+/**
+ * Response for processing logs.
+ */
+interface ProcessingLogsResponse {
+  /** Array of log records */
+  logs: ReceiptProcessingLogRecord[];
+  /** Total count of logs */
+  total: number;
+}
+
+/**
+ * Request for updating a receipt item.
+ */
+interface UpdateReceiptItemRequest {
+  /** Matching status */
+  status?: ReceiptItemStatus;
+  /** Matched master item ID (null to unlink) */
+  master_item_id?: number | null;
+  /** Matched product ID (null to unlink) */
+  product_id?: number | null;
+  /**
+   * Match confidence score
+   * @minimum 0
+   * @maximum 1
+   */
+  match_confidence?: number;
+}
+
+/**
+ * Item confirmation for adding to inventory.
+ */
+interface ConfirmItemEntry {
+  /** Receipt item ID */
+  receipt_item_id: number;
+  /**
+   * Override item name
+   * @maxLength 255
+   */
+  item_name?: string;
+  /** Override quantity */
+  quantity?: number;
+  /** Storage location */
+  location?: StorageLocation;
+  /** Expiry date (YYYY-MM-DD format) */
+  expiry_date?: string;
+  /** Whether to add this item (false = skip) */
+  include: boolean;
+}
+
+/**
+ * Request for confirming items to add to inventory.
+ */
+interface ConfirmItemsRequest {
+  /** Array of items to confirm */
+  items: ConfirmItemEntry[];
+}
+
+/**
+ * Response for confirmed items.
+ */
+interface ConfirmItemsResponse {
+  /** Items added to inventory */
+  added_items: unknown[];
+  /** Count of items added */
+  count: number;
+}
+
+// ============================================================================
+// RECEIPT CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for managing receipt scanning and processing.
+ *
+ * All endpoints require JWT authentication. Users can only access
+ * their own receipts - the user ID is extracted from the JWT token.
+ *
+ * Note: File upload functionality uses Express middleware that is
+ * configured separately from tsoa. The POST /receipts endpoint
+ * expects multipart/form-data with a 'receipt' file field.
+ */
+@Route('receipts')
+@Tags('Receipts')
+@Security('bearerAuth')
+export class ReceiptController extends BaseController {
+  // ==========================================================================
+  // RECEIPT MANAGEMENT ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get user's receipts.
+   *
+   * Retrieve the user's scanned receipts with optional filtering and pagination.
+   *
+   * @summary Get user's receipts
+   * @param request Express request with authenticated user
+   * @param limit Maximum number of receipts to return (default: 50, max: 100)
+   * @param offset Number of receipts to skip for pagination (default: 0)
+   * @param status Filter by processing status
+   * @param store_location_id Filter by store location ID
+   * @param from_date Filter by transaction date (start, YYYY-MM-DD format)
+   * @param to_date Filter by transaction date (end, YYYY-MM-DD format)
+   * @returns List of receipts with total count
+   */
+  @Get()
+  @SuccessResponse(200, 'Receipts retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async getReceipts(
+    @Request() request: ExpressRequest,
+    @Query() limit?: number,
+    @Query() offset?: number,
+    @Query() status?: ReceiptStatus,
+    @Query() store_location_id?: number,
+    @Query() from_date?: string,
+    @Query() to_date?: string,
+  ): Promise<SuccessResponseType<{ receipts: ReceiptScan[]; total: number }>> {
+    const userProfile = request.user as UserProfile;
+
+    // Normalize pagination parameters
+    const normalizedLimit = Math.min(100, Math.max(1, Math.floor(limit ?? 50)));
+    const normalizedOffset = Math.max(0, Math.floor(offset ?? 0));
+
+    const result = await receiptService.getReceipts(
+      {
+        user_id: userProfile.user.user_id,
+        status,
+        store_location_id,
+        from_date,
+        to_date,
+        limit: normalizedLimit,
+        offset: normalizedOffset,
+      },
+      request.log,
+    );
+
+    return this.success(result);
+  }
+
+  /**
+   * Upload a receipt.
+   *
+   * Upload a receipt image for processing and item extraction.
+   * The receipt will be queued for background processing.
+   *
+   * Note: This endpoint is handled by Express middleware for file uploads.
+   * See receipt.routes.ts for the actual implementation with multer.
+   *
+   * @summary Upload a receipt
+   * @param request Express request with authenticated user and uploaded file
+   * @param store_location_id Store location ID if known
+   * @param transaction_date Transaction date if known (YYYY-MM-DD format)
+   * @returns Created receipt record with job ID
+   */
+  @Post()
+  @SuccessResponse(201, 'Receipt uploaded and queued for processing')
+  @Response<ErrorResponse>(400, 'Validation error - no file uploaded')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  public async uploadReceipt(
+    @Request() request: ExpressRequest,
+    @FormField() store_location_id?: number,
+    @FormField() transaction_date?: string,
+  ): Promise<SuccessResponseType<ReceiptUploadResponse>> {
+    const userProfile = request.user as UserProfile;
+    const file = request.file as Express.Multer.File | undefined;
+
+    // Validate file was uploaded (middleware should handle this, but double-check)
+    if (!file) {
+      this.setStatus(400);
+      throw new Error('Receipt image is required.');
+    }
+
+    request.log.info(
+      { userId: userProfile.user.user_id, filename: file.filename },
+      'Uploading receipt',
+    );
+
+    // Create receipt record with the actual file path
+    const receipt = await receiptService.createReceipt(
+      userProfile.user.user_id,
+      file.path,
+      request.log,
+      {
+        storeLocationId: store_location_id,
+        transactionDate: transaction_date,
+      },
+    );
+
+    // Queue the receipt for processing via BullMQ
+    const bindings = request.log.bindings?.() || {};
+    const job = await receiptQueue.add(
+      'process-receipt',
+      {
+        receiptId: receipt.receipt_id,
+        userId: userProfile.user.user_id,
+        imagePath: file.path,
+        meta: {
+          requestId: bindings.request_id as string | undefined,
+          userId: userProfile.user.user_id,
+          origin: 'api',
+        },
+      },
+      {
+        jobId: `receipt-${receipt.receipt_id}`,
+      },
+    );
+
+    request.log.info(
+      { receiptId: receipt.receipt_id, jobId: job.id },
+      'Receipt queued for processing',
+    );
+
+    return this.created({ ...receipt, job_id: job.id });
+  }
+
+  /**
+   * Get receipt by ID.
+   *
+   * Retrieve a specific receipt with its extracted items.
+   *
+   * @summary Get receipt by ID
+   * @param receiptId The unique identifier of the receipt
+   * @param request Express request with authenticated user
+   * @returns Receipt with its items
+   */
+  @Get('{receiptId}')
+  @SuccessResponse(200, 'Receipt retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt not found')
+  public async getReceiptById(
+    @Path() receiptId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ReceiptWithItemsResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    const receipt = await receiptService.getReceiptById(
+      receiptId,
+      userProfile.user.user_id,
+      request.log,
+    );
+
+    // Also get the items
+    const items = await receiptService.getReceiptItems(receiptId, request.log);
+
+    return this.success({ receipt, items });
+  }
+
+  /**
+   * Delete receipt.
+   *
+   * Delete a receipt and all associated data.
+   *
+   * @summary Delete receipt
+   * @param receiptId The unique identifier of the receipt
+   * @param request Express request with authenticated user
+   */
+  @Delete('{receiptId}')
+  @SuccessResponse(204, 'Receipt deleted')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt not found')
+  public async deleteReceipt(
+    @Path() receiptId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<void> {
+    const userProfile = request.user as UserProfile;
+    await receiptService.deleteReceipt(receiptId, userProfile.user.user_id, request.log);
+    return this.noContent();
+  }
+
+  /**
+   * Reprocess receipt.
+   *
+   * Queue a failed receipt for reprocessing.
+   *
+   * @summary Reprocess receipt
+   * @param receiptId The unique identifier of the receipt
+   * @param request Express request with authenticated user
+   * @returns Confirmation with job ID
+   */
+  @Post('{receiptId}/reprocess')
+  @SuccessResponse(200, 'Receipt queued for reprocessing')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt not found')
+  public async reprocessReceipt(
+    @Path() receiptId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ReprocessResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    // Verify the receipt exists and belongs to user
+    const receipt = await receiptService.getReceiptById(
+      receiptId,
+      userProfile.user.user_id,
+      request.log,
+    );
+
+    // Queue for reprocessing via BullMQ
+    const bindings = request.log.bindings?.() || {};
+    const job = await receiptQueue.add(
+      'process-receipt',
+      {
+        receiptId: receipt.receipt_id,
+        userId: userProfile.user.user_id,
+        imagePath: receipt.receipt_image_url, // Use stored image path
+        meta: {
+          requestId: bindings.request_id as string | undefined,
+          userId: userProfile.user.user_id,
+          origin: 'api-reprocess',
+        },
+      },
+      {
+        jobId: `receipt-${receipt.receipt_id}-reprocess-${Date.now()}`,
+      },
+    );
+
+    request.log.info({ receiptId, jobId: job.id }, 'Receipt queued for reprocessing');
+
+    return this.success({
+      message: 'Receipt queued for reprocessing',
+      receipt_id: receipt.receipt_id,
+      job_id: job.id,
+    });
+  }
+
+  // ==========================================================================
+  // RECEIPT ITEMS ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get receipt items.
+   *
+   * Get all extracted items from a receipt.
+   *
+   * @summary Get receipt items
+   * @param receiptId The unique identifier of the receipt
+   * @param request Express request with authenticated user
+   * @returns List of receipt items
+   */
+  @Get('{receiptId}/items')
+  @SuccessResponse(200, 'Receipt items retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt not found')
+  public async getReceiptItems(
+    @Path() receiptId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ReceiptItemsListResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    // Verify receipt belongs to user
+    await receiptService.getReceiptById(receiptId, userProfile.user.user_id, request.log);
+
+    const items = await receiptService.getReceiptItems(receiptId, request.log);
+    return this.success({ items, total: items.length });
+  }
+
+  /**
+   * Get unadded items.
+   *
+   * Get receipt items that haven't been added to inventory yet.
+   *
+   * @summary Get unadded items
+   * @param receiptId The unique identifier of the receipt
+   * @param request Express request with authenticated user
+   * @returns List of unadded receipt items
+   */
+  @Get('{receiptId}/items/unadded')
+  @SuccessResponse(200, 'Unadded items retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt not found')
+  public async getUnaddedItems(
+    @Path() receiptId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ReceiptItemsListResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    // Verify receipt belongs to user
+    await receiptService.getReceiptById(receiptId, userProfile.user.user_id, request.log);
+
+    const items = await receiptService.getUnaddedItems(receiptId, request.log);
+    return this.success({ items, total: items.length });
+  }
+
+  /**
+   * Update receipt item.
+   *
+   * Update a receipt item's matching status or linked product.
+   *
+   * @summary Update receipt item
+   * @param receiptId The unique identifier of the receipt
+   * @param itemId The unique identifier of the receipt item
+   * @param request Express request with authenticated user
+   * @param body Fields to update
+   * @returns The updated receipt item
+   */
+  @Put('{receiptId}/items/{itemId}')
+  @SuccessResponse(200, 'Item updated')
+  @Response<ErrorResponse>(400, 'Validation error - at least one field required')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt or item not found')
+  public async updateReceiptItem(
+    @Path() receiptId: number,
+    @Path() itemId: number,
+    @Request() request: ExpressRequest,
+    @Body() body: UpdateReceiptItemRequest,
+  ): Promise<SuccessResponseType<ReceiptItem>> {
+    const userProfile = request.user as UserProfile;
+
+    // Validate at least one field is provided
+    if (Object.keys(body).length === 0) {
+      this.setStatus(400);
+      throw new Error('At least one field to update must be provided.');
+    }
+
+    // Verify receipt belongs to user
+    await receiptService.getReceiptById(receiptId, userProfile.user.user_id, request.log);
+
+    const item = await receiptService.updateReceiptItem(itemId, body, request.log);
+    return this.success(item);
+  }
+
+  /**
+   * Confirm items for inventory.
+   *
+   * Confirm selected receipt items to add to user's inventory.
+   *
+   * @summary Confirm items for inventory
+   * @param receiptId The unique identifier of the receipt
+   * @param request Express request with authenticated user
+   * @param body Items to confirm
+   * @returns Added items with count
+   */
+  @Post('{receiptId}/confirm')
+  @SuccessResponse(200, 'Items added to inventory')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt not found')
+  public async confirmItems(
+    @Path() receiptId: number,
+    @Request() request: ExpressRequest,
+    @Body() body: ConfirmItemsRequest,
+  ): Promise<SuccessResponseType<ConfirmItemsResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    request.log.info(
+      {
+        userId: userProfile.user.user_id,
+        receiptId,
+        itemCount: body.items.length,
+      },
+      'Confirming receipt items for inventory',
+    );
+
+    const addedItems = await expiryService.addItemsFromReceipt(
+      userProfile.user.user_id,
+      receiptId,
+      body.items,
+      request.log,
+    );
+
+    return this.success({ added_items: addedItems, count: addedItems.length });
+  }
+
+  // ==========================================================================
+  // PROCESSING LOGS ENDPOINT
+  // ==========================================================================
+
+  /**
+   * Get processing logs.
+   *
+   * Get the processing log history for a receipt.
+   *
+   * @summary Get processing logs
+   * @param receiptId The unique identifier of the receipt
+   * @param request Express request with authenticated user
+   * @returns Processing log history
+   */
+  @Get('{receiptId}/logs')
+  @SuccessResponse(200, 'Processing logs retrieved')
+  @Response<ErrorResponse>(401, 'Unauthorized - invalid or missing token')
+  @Response<ErrorResponse>(404, 'Receipt not found')
+  public async getProcessingLogs(
+    @Path() receiptId: number,
+    @Request() request: ExpressRequest,
+  ): Promise<SuccessResponseType<ProcessingLogsResponse>> {
+    const userProfile = request.user as UserProfile;
+
+    // Verify receipt belongs to user
+    await receiptService.getReceiptById(receiptId, userProfile.user.user_id, request.log);
+
+    const logs = await receiptService.getProcessingLogs(receiptId, request.log);
+    return this.success({ logs, total: logs.length });
+  }
+}

src/controllers/recipe.controller.test.ts

@@ -0,0 +1,638 @@
+// src/controllers/recipe.controller.test.ts
+// ============================================================================
+// RECIPE CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the RecipeController class. These tests verify controller
+// logic in isolation by mocking database repositories and AI service.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger, asErrorResponse } from '../tests/utils/testHelpers';
+import {
+  createMockRecipe,
+  createMockRecipeComment,
+  createMockUserProfile,
+  resetMockIds,
+} from '../tests/utils/mockFactories';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock database repositories
+vi.mock('../services/db/index.db', () => ({
+  recipeRepo: {
+    getRecipesBySalePercentage: vi.fn(),
+    getRecipesByMinSaleIngredients: vi.fn(),
+    findRecipesByIngredientAndTag: vi.fn(),
+    getRecipeById: vi.fn(),
+    getRecipeComments: vi.fn(),
+    addRecipeComment: vi.fn(),
+    forkRecipe: vi.fn(),
+  },
+}));
+
+// Mock AI service
+vi.mock('../services/aiService.server', () => ({
+  aiService: {
+    generateRecipeSuggestion: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import * as db from '../services/db/index.db';
+import { aiService } from '../services/aiService.server';
+import { RecipeController } from './recipe.controller';
+
+// Cast mocked modules for type-safe access
+const mockedDb = db as Mocked<typeof db>;
+const mockedAiService = aiService as Mocked<typeof aiService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile({ user: { user_id: 'test-user-id', email: 'test@example.com' } }),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock recipe comment object using the shared factory.
+ */
+function createMockComment(overrides: Record<string, unknown> = {}) {
+  return createMockRecipeComment({
+    recipe_comment_id: 1,
+    recipe_id: 1,
+    user_id: 'user-123',
+    content: 'Great recipe!',
+    parent_comment_id: null,
+    user_full_name: 'Test User',
+    user_avatar_url: undefined,
+    ...overrides,
+  });
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('RecipeController', () => {
+  let controller: RecipeController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    resetMockIds();
+    controller = new RecipeController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // DISCOVERY ENDPOINTS
+  // ==========================================================================
+
+  describe('getRecipesBySalePercentage()', () => {
+    it('should return recipes with default 50% minimum', async () => {
+      // Arrange
+      const mockRecipes = [createMockRecipe(), createMockRecipe({ recipe_id: 2 })];
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipesBySalePercentage).mockResolvedValue(mockRecipes);
+
+      // Act
+      const result = await controller.getRecipesBySalePercentage(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+      expect(mockedDb.recipeRepo.getRecipesBySalePercentage).toHaveBeenCalledWith(
+        50,
+        expect.anything(),
+      );
+    });
+
+    it('should respect custom percentage parameter', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipesBySalePercentage).mockResolvedValue([]);
+
+      // Act
+      await controller.getRecipesBySalePercentage(request, 75);
+
+      // Assert
+      expect(mockedDb.recipeRepo.getRecipesBySalePercentage).toHaveBeenCalledWith(
+        75,
+        expect.anything(),
+      );
+    });
+
+    it('should cap percentage at 100', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipesBySalePercentage).mockResolvedValue([]);
+
+      // Act
+      await controller.getRecipesBySalePercentage(request, 150);
+
+      // Assert
+      expect(mockedDb.recipeRepo.getRecipesBySalePercentage).toHaveBeenCalledWith(
+        100,
+        expect.anything(),
+      );
+    });
+
+    it('should floor percentage at 0', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipesBySalePercentage).mockResolvedValue([]);
+
+      // Act
+      await controller.getRecipesBySalePercentage(request, -10);
+
+      // Assert
+      expect(mockedDb.recipeRepo.getRecipesBySalePercentage).toHaveBeenCalledWith(
+        0,
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('getRecipesBySaleIngredients()', () => {
+    it('should return recipes with default 3 minimum ingredients', async () => {
+      // Arrange
+      const mockRecipes = [createMockRecipe()];
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipesByMinSaleIngredients).mockResolvedValue(mockRecipes);
+
+      // Act
+      const result = await controller.getRecipesBySaleIngredients(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(1);
+      }
+      expect(mockedDb.recipeRepo.getRecipesByMinSaleIngredients).toHaveBeenCalledWith(
+        3,
+        expect.anything(),
+      );
+    });
+
+    it('should floor minimum ingredients at 1', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipesByMinSaleIngredients).mockResolvedValue([]);
+
+      // Act
+      await controller.getRecipesBySaleIngredients(request, 0);
+
+      // Assert
+      expect(mockedDb.recipeRepo.getRecipesByMinSaleIngredients).toHaveBeenCalledWith(
+        1,
+        expect.anything(),
+      );
+    });
+
+    it('should floor decimal values', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipesByMinSaleIngredients).mockResolvedValue([]);
+
+      // Act
+      await controller.getRecipesBySaleIngredients(request, 5.9);
+
+      // Assert
+      expect(mockedDb.recipeRepo.getRecipesByMinSaleIngredients).toHaveBeenCalledWith(
+        5,
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('findRecipesByIngredientAndTag()', () => {
+    it('should find recipes by ingredient and tag', async () => {
+      // Arrange
+      const mockRecipes = [createMockRecipe()];
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.findRecipesByIngredientAndTag).mockResolvedValue(mockRecipes);
+
+      // Act
+      const result = await controller.findRecipesByIngredientAndTag(request, 'chicken', 'dinner');
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(1);
+      }
+      expect(mockedDb.recipeRepo.findRecipesByIngredientAndTag).toHaveBeenCalledWith(
+        'chicken',
+        'dinner',
+        expect.anything(),
+      );
+    });
+
+    it('should log search parameters', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      vi.mocked(mockedDb.recipeRepo.findRecipesByIngredientAndTag).mockResolvedValue([]);
+
+      // Act
+      await controller.findRecipesByIngredientAndTag(request, 'beef', 'quick');
+
+      // Assert
+      expect(mockLog.debug).toHaveBeenCalledWith(
+        { ingredient: 'beef', tag: 'quick' },
+        'Finding recipes by ingredient and tag',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // SINGLE RESOURCE ENDPOINTS
+  // ==========================================================================
+
+  describe('getRecipeById()', () => {
+    it('should return recipe by ID', async () => {
+      // Arrange
+      const mockRecipe = createMockRecipe({ recipe_id: 1, name: 'Test Recipe' });
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipeById).mockResolvedValue(mockRecipe);
+
+      // Act
+      const result = await controller.getRecipeById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.recipe_id).toBe(1);
+        expect(result.data.name).toBe('Test Recipe');
+      }
+      expect(mockedDb.recipeRepo.getRecipeById).toHaveBeenCalledWith(1, expect.anything());
+    });
+
+    it('should include ingredients and tags', async () => {
+      // Arrange
+      const mockRecipe = createMockRecipe({
+        recipe_id: 1,
+        ingredients: [{}], // Will generate one mock ingredient
+        comments: [{}], // Comments array used to generate default content
+      });
+      // The shared factory generates ingredients and tags separately,
+      // so we need to add tags property manually for this test
+      const mockRecipeWithTags = {
+        ...mockRecipe,
+        tags: [
+          {
+            tag_id: 1,
+            name: 'vegetarian',
+            created_at: new Date().toISOString(),
+            updated_at: new Date().toISOString(),
+          },
+        ],
+      };
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipeById).mockResolvedValue(mockRecipeWithTags);
+
+      // Act
+      const result = await controller.getRecipeById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.ingredients).toHaveLength(1);
+        expect(result.data.tags).toHaveLength(1);
+      }
+    });
+  });
+
+  describe('getRecipeComments()', () => {
+    it('should return recipe comments', async () => {
+      // Arrange
+      const mockComments = [
+        createMockComment(),
+        createMockComment({ recipe_comment_id: 2, content: 'Another comment' }),
+      ];
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipeComments).mockResolvedValue(mockComments);
+
+      // Act
+      const result = await controller.getRecipeComments(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].content).toBe('Great recipe!');
+      }
+      expect(mockedDb.recipeRepo.getRecipeComments).toHaveBeenCalledWith(1, expect.anything());
+    });
+
+    it('should return empty array when no comments', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipeComments).mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getRecipeComments(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toEqual([]);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // AUTHENTICATED ENDPOINTS
+  // ==========================================================================
+
+  describe('suggestRecipe()', () => {
+    it('should return AI-generated recipe suggestion', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedAiService.generateRecipeSuggestion).mockResolvedValue(
+        'Here is a delicious recipe using chicken and rice...',
+      );
+
+      // Act
+      const result = await controller.suggestRecipe(
+        { ingredients: ['chicken', 'rice', 'vegetables'] },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.suggestion).toContain('chicken');
+      }
+      expect(mockedAiService.generateRecipeSuggestion).toHaveBeenCalledWith(
+        ['chicken', 'rice', 'vegetables'],
+        expect.anything(),
+      );
+    });
+
+    it('should return error when AI service fails', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedAiService.generateRecipeSuggestion).mockResolvedValue(null);
+
+      // Act
+      const result = await controller.suggestRecipe({ ingredients: ['chicken'] }, request);
+
+      // Assert
+      expect(result.success).toBe(false);
+      const errorBody = asErrorResponse(result);
+      expect(errorBody.error.code).toBe('SERVICE_UNAVAILABLE');
+    });
+
+    it('should log suggestion generation', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      vi.mocked(mockedAiService.generateRecipeSuggestion).mockResolvedValue('Recipe suggestion');
+
+      // Act
+      await controller.suggestRecipe({ ingredients: ['chicken', 'rice'] }, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { userId: 'test-user-id', ingredientCount: 2 },
+        'Generating recipe suggestion',
+      );
+    });
+  });
+
+  describe('addComment()', () => {
+    it('should add comment to recipe', async () => {
+      // Arrange
+      const mockComment = createMockComment();
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.addRecipeComment).mockResolvedValue(mockComment);
+
+      // Act
+      const result = await controller.addComment(1, { content: 'Great recipe!' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.content).toBe('Great recipe!');
+      }
+      expect(mockedDb.recipeRepo.addRecipeComment).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        'Great recipe!',
+        expect.anything(),
+        undefined,
+      );
+    });
+
+    it('should support nested replies', async () => {
+      // Arrange
+      const mockComment = createMockComment({ parent_comment_id: 5 });
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.addRecipeComment).mockResolvedValue(mockComment);
+
+      // Act
+      const result = await controller.addComment(
+        1,
+        { content: 'Reply to comment', parentCommentId: 5 },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.parent_comment_id).toBe(5);
+      }
+      expect(mockedDb.recipeRepo.addRecipeComment).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        'Reply to comment',
+        expect.anything(),
+        5,
+      );
+    });
+
+    it('should log comment addition', async () => {
+      // Arrange
+      const mockComment = createMockComment();
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      vi.mocked(mockedDb.recipeRepo.addRecipeComment).mockResolvedValue(mockComment);
+
+      // Act
+      await controller.addComment(1, { content: 'Test' }, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { recipeId: 1, userId: 'test-user-id', hasParent: false },
+        'Adding comment to recipe',
+      );
+    });
+  });
+
+  describe('forkRecipe()', () => {
+    it('should fork a recipe', async () => {
+      // Arrange
+      // Note: The controller casts Recipe to RecipeDto, so the actual response
+      // will have original_recipe_id from the DB, not forked_from as defined in the DTO
+      const mockForkedRecipe = createMockRecipe({
+        recipe_id: 10,
+        user_id: 'test-user-id',
+        original_recipe_id: 1,
+        status: 'private',
+      });
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.forkRecipe).mockResolvedValue(mockForkedRecipe);
+
+      // Act
+      const result = await controller.forkRecipe(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.recipe_id).toBe(10);
+        // The controller returns original_recipe_id from DB, cast to RecipeDto
+        expect((result.data as unknown as { original_recipe_id: number }).original_recipe_id).toBe(
+          1,
+        );
+        expect(result.data.user_id).toBe('test-user-id');
+      }
+      expect(mockedDb.recipeRepo.forkRecipe).toHaveBeenCalledWith(
+        'test-user-id',
+        1,
+        expect.anything(),
+      );
+    });
+
+    it('should log fork operation', async () => {
+      // Arrange
+      const mockForkedRecipe = createMockRecipe({ recipe_id: 10, original_recipe_id: 1 });
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      vi.mocked(mockedDb.recipeRepo.forkRecipe).mockResolvedValue(mockForkedRecipe);
+
+      // Act
+      await controller.forkRecipe(1, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { recipeId: 1, userId: 'test-user-id' },
+        'Forking recipe',
+      );
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { originalRecipeId: 1, forkedRecipeId: 10 },
+        'Recipe forked successfully',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockRecipe = createMockRecipe();
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.getRecipeById).mockResolvedValue(mockRecipe);
+
+      // Act
+      const result = await controller.getRecipeById(1, request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use created helper for 201 responses', async () => {
+      // Arrange
+      const mockComment = createMockComment();
+      const request = createMockRequest();
+
+      vi.mocked(mockedDb.recipeRepo.addRecipeComment).mockResolvedValue(mockComment);
+
+      // Act
+      const result = await controller.addComment(1, { content: 'Test' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should use error helper for error responses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      vi.mocked(mockedAiService.generateRecipeSuggestion).mockResolvedValue(null);
+
+      // Act
+      const result = await controller.suggestRecipe({ ingredients: ['test'] }, request);
+
+      // Assert
+      expect(result.success).toBe(false);
+      const errorBody = asErrorResponse(result);
+      expect(errorBody.error).toHaveProperty('code');
+      expect(errorBody.error).toHaveProperty('message');
+    });
+  });
+});

src/controllers/recipe.controller.ts

@@ -0,0 +1,441 @@
+// src/controllers/recipe.controller.ts
+// ============================================================================
+// RECIPE CONTROLLER
+// ============================================================================
+// Provides endpoints for managing recipes and recipe interactions.
+// Implements endpoints for:
+// - Getting recipes by sale percentage
+// - Getting recipes by minimum sale ingredients
+// - Finding recipes by ingredient and tag
+// - Getting a single recipe by ID
+// - Getting recipe comments
+// - AI-powered recipe suggestions (authenticated)
+// - Adding comments to recipes (authenticated)
+// - Forking recipes (authenticated)
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Route,
+  Tags,
+  Path,
+  Query,
+  Body,
+  Request,
+  Security,
+  SuccessResponse,
+  Response,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController, ControllerErrorCode } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import * as db from '../services/db/index.db';
+import { aiService } from '../services/aiService.server';
+import type { UserProfile } from '../types';
+
+// ============================================================================
+// DTO TYPES FOR OPENAPI
+// ============================================================================
+// Data Transfer Objects that are tsoa-compatible for API documentation.
+// ============================================================================
+
+/**
+ * Recipe ingredient data.
+ */
+interface RecipeIngredientDto {
+  /** Recipe ingredient ID */
+  recipe_ingredient_id: number;
+  /** Master grocery item name */
+  master_item_name: string | null;
+  /** Quantity required */
+  quantity: string | null;
+  /** Unit of measurement */
+  unit: string | null;
+  /** Timestamp of record creation */
+  readonly created_at: string;
+  /** Timestamp of last update */
+  readonly updated_at: string;
+}
+
+/**
+ * Recipe tag data.
+ */
+interface RecipeTagDto {
+  /** Tag ID */
+  tag_id: number;
+  /** Tag name */
+  name: string;
+  /** Timestamp of record creation */
+  readonly created_at: string;
+  /** Timestamp of last update */
+  readonly updated_at: string;
+}
+
+/**
+ * Recipe data transfer object for API responses.
+ */
+interface RecipeDto {
+  /** Unique recipe identifier */
+  readonly recipe_id: number;
+  /** User ID who created the recipe */
+  readonly user_id: string;
+  /** Recipe name */
+  name: string;
+  /** Recipe description */
+  description: string | null;
+  /** Cooking instructions */
+  instructions: string | null;
+  /** Preparation time in minutes */
+  prep_time_minutes: number | null;
+  /** Cooking time in minutes */
+  cook_time_minutes: number | null;
+  /** Number of servings */
+  servings: number | null;
+  /** URL to recipe photo */
+  photo_url: string | null;
+  /** Recipe status (public, private, archived) */
+  status: 'public' | 'private' | 'archived';
+  /** ID of the original recipe if this is a fork */
+  forked_from: number | null;
+  /** Recipe ingredients */
+  ingredients?: RecipeIngredientDto[];
+  /** Recipe tags */
+  tags?: RecipeTagDto[];
+  /** Timestamp of record creation */
+  readonly created_at: string;
+  /** Timestamp of last update */
+  readonly updated_at: string;
+}
+
+/**
+ * Recipe comment data transfer object.
+ */
+interface RecipeCommentDto {
+  /** Unique comment identifier */
+  readonly recipe_comment_id: number;
+  /** Recipe ID this comment belongs to */
+  readonly recipe_id: number;
+  /** User ID who posted the comment */
+  readonly user_id: string;
+  /** Comment content */
+  content: string;
+  /** Parent comment ID for threaded replies */
+  parent_comment_id: number | null;
+  /** User's full name */
+  user_full_name: string | null;
+  /** User's avatar URL */
+  user_avatar_url: string | null;
+  /** Timestamp of record creation */
+  readonly created_at: string;
+  /** Timestamp of last update */
+  readonly updated_at: string;
+}
+
+// ============================================================================
+// REQUEST TYPES
+// ============================================================================
+
+/**
+ * Request body for AI recipe suggestion.
+ */
+interface SuggestRecipeRequest {
+  /**
+   * List of ingredients to use for the suggestion.
+   * @minItems 1
+   * @example ["chicken", "rice", "broccoli"]
+   */
+  ingredients: string[];
+}
+
+/**
+ * Response data for AI recipe suggestion.
+ */
+interface SuggestRecipeResponseData {
+  /** The AI-generated recipe suggestion */
+  suggestion: string;
+}
+
+/**
+ * Request body for adding a comment to a recipe.
+ */
+interface AddCommentRequest {
+  /**
+   * The comment content.
+   * @minLength 1
+   * @example "This recipe is delicious! I added some garlic for extra flavor."
+   */
+  content: string;
+
+  /**
+   * Parent comment ID for threaded replies (optional).
+   */
+  parentCommentId?: number;
+}
+
+// ============================================================================
+// RECIPE CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for recipe endpoints.
+ *
+ * Provides read access for browsing recipes and write access for
+ * authenticated users to interact with recipes (comments, forks, AI suggestions).
+ */
+@Route('recipes')
+@Tags('Recipes')
+export class RecipeController extends BaseController {
+  // ==========================================================================
+  // DISCOVERY ENDPOINTS (PUBLIC)
+  // ==========================================================================
+
+  /**
+   * Get recipes by sale percentage.
+   *
+   * Returns recipes where at least the specified percentage of ingredients
+   * are currently on sale. Useful for finding budget-friendly meals.
+   *
+   * @summary Get recipes by sale percentage
+   * @param minPercentage Minimum percentage of ingredients on sale (0-100, default: 50)
+   * @returns Array of recipes matching the criteria
+   */
+  @Get('by-sale-percentage')
+  @SuccessResponse(200, 'Recipes retrieved successfully')
+  public async getRecipesBySalePercentage(
+    @Request() req: ExpressRequest,
+    @Query() minPercentage?: number,
+  ): Promise<SuccessResponseType<RecipeDto[]>> {
+    // Apply defaults and bounds
+    const normalizedPercentage = Math.min(100, Math.max(0, minPercentage ?? 50));
+
+    req.log.debug({ minPercentage: normalizedPercentage }, 'Fetching recipes by sale percentage');
+
+    const recipes = await db.recipeRepo.getRecipesBySalePercentage(normalizedPercentage, req.log);
+
+    return this.success(recipes as unknown as RecipeDto[]);
+  }
+
+  /**
+   * Get recipes by sale ingredients count.
+   *
+   * Returns recipes with at least the specified number of ingredients
+   * currently on sale. Helps find recipes that maximize current deals.
+   *
+   * @summary Get recipes by minimum sale ingredients
+   * @param minIngredients Minimum number of sale ingredients required (default: 3)
+   * @returns Array of recipes matching the criteria
+   */
+  @Get('by-sale-ingredients')
+  @SuccessResponse(200, 'Recipes retrieved successfully')
+  public async getRecipesBySaleIngredients(
+    @Request() req: ExpressRequest,
+    @Query() minIngredients?: number,
+  ): Promise<SuccessResponseType<RecipeDto[]>> {
+    // Apply defaults and bounds
+    const normalizedCount = Math.max(1, Math.floor(minIngredients ?? 3));
+
+    req.log.debug({ minIngredients: normalizedCount }, 'Fetching recipes by sale ingredients');
+
+    const recipes = await db.recipeRepo.getRecipesByMinSaleIngredients(normalizedCount, req.log);
+
+    return this.success(recipes as unknown as RecipeDto[]);
+  }
+
+  /**
+   * Find recipes by ingredient and tag.
+   *
+   * Returns recipes that contain a specific ingredient and have a specific tag.
+   * Both parameters are required for filtering.
+   *
+   * @summary Find recipes by ingredient and tag
+   * @param ingredient Ingredient name to search for
+   * @param tag Tag to filter by
+   * @returns Array of matching recipes
+   */
+  @Get('by-ingredient-and-tag')
+  @SuccessResponse(200, 'Recipes retrieved successfully')
+  @Response<ErrorResponse>(400, 'Missing required query parameters')
+  public async findRecipesByIngredientAndTag(
+    @Request() req: ExpressRequest,
+    @Query() ingredient: string,
+    @Query() tag: string,
+  ): Promise<SuccessResponseType<RecipeDto[]>> {
+    req.log.debug({ ingredient, tag }, 'Finding recipes by ingredient and tag');
+
+    const recipes = await db.recipeRepo.findRecipesByIngredientAndTag(ingredient, tag, req.log);
+
+    return this.success(recipes as unknown as RecipeDto[]);
+  }
+
+  // ==========================================================================
+  // SINGLE RESOURCE ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get recipe by ID.
+   *
+   * Returns a single recipe with its ingredients and tags.
+   *
+   * @summary Get a single recipe
+   * @param recipeId The unique identifier of the recipe
+   * @returns The recipe object with ingredients and tags
+   */
+  @Get('{recipeId}')
+  @SuccessResponse(200, 'Recipe retrieved successfully')
+  @Response<ErrorResponse>(404, 'Recipe not found')
+  public async getRecipeById(
+    @Path() recipeId: number,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<RecipeDto>> {
+    req.log.debug({ recipeId }, 'Fetching recipe by ID');
+
+    const recipe = await db.recipeRepo.getRecipeById(recipeId, req.log);
+
+    return this.success(recipe as unknown as RecipeDto);
+  }
+
+  /**
+   * Get recipe comments.
+   *
+   * Returns all comments for a specific recipe, ordered by creation date.
+   * Includes user information (name, avatar) for each comment.
+   *
+   * @summary Get comments for a recipe
+   * @param recipeId The unique identifier of the recipe
+   * @returns Array of comments for the recipe
+   */
+  @Get('{recipeId}/comments')
+  @SuccessResponse(200, 'Comments retrieved successfully')
+  @Response<ErrorResponse>(404, 'Recipe not found')
+  public async getRecipeComments(
+    @Path() recipeId: number,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<RecipeCommentDto[]>> {
+    req.log.debug({ recipeId }, 'Fetching recipe comments');
+
+    const comments = await db.recipeRepo.getRecipeComments(recipeId, req.log);
+
+    return this.success(comments as unknown as RecipeCommentDto[]);
+  }
+
+  // ==========================================================================
+  // AUTHENTICATED ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get AI recipe suggestion.
+   *
+   * Uses AI to generate a recipe suggestion based on provided ingredients.
+   * Requires authentication due to API usage costs.
+   *
+   * @summary Get AI-powered recipe suggestion
+   * @param body List of ingredients to use
+   * @returns AI-generated recipe suggestion
+   */
+  @Post('suggest')
+  @Security('bearerAuth')
+  @SuccessResponse(200, 'Suggestion generated successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(503, 'AI service unavailable')
+  public async suggestRecipe(
+    @Body() body: SuggestRecipeRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<SuggestRecipeResponseData>> {
+    const userProfile = req.user as UserProfile;
+
+    req.log.info(
+      { userId: userProfile.user.user_id, ingredientCount: body.ingredients.length },
+      'Generating recipe suggestion',
+    );
+
+    const suggestion = await aiService.generateRecipeSuggestion(body.ingredients, req.log);
+
+    if (!suggestion) {
+      this.setStatus(503);
+      return this.error(
+        ControllerErrorCode.SERVICE_UNAVAILABLE,
+        'AI service is currently unavailable or failed to generate a suggestion.',
+      ) as unknown as SuccessResponseType<SuggestRecipeResponseData>;
+    }
+
+    req.log.info({ userId: userProfile.user.user_id }, 'Recipe suggestion generated successfully');
+
+    return this.success({ suggestion });
+  }
+
+  /**
+   * Add comment to recipe.
+   *
+   * Adds a comment to a recipe. Supports nested replies via parentCommentId.
+   *
+   * @summary Add a comment to a recipe
+   * @param recipeId The unique identifier of the recipe
+   * @param body Comment content and optional parent comment ID
+   * @returns The created comment
+   */
+  @Post('{recipeId}/comments')
+  @Security('bearerAuth')
+  @SuccessResponse(201, 'Comment added successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(404, 'Recipe or parent comment not found')
+  public async addComment(
+    @Path() recipeId: number,
+    @Body() body: AddCommentRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<RecipeCommentDto>> {
+    const userProfile = req.user as UserProfile;
+    const userId = userProfile.user.user_id;
+
+    req.log.info(
+      { recipeId, userId, hasParent: !!body.parentCommentId },
+      'Adding comment to recipe',
+    );
+
+    const comment = await db.recipeRepo.addRecipeComment(
+      recipeId,
+      userId,
+      body.content,
+      req.log,
+      body.parentCommentId,
+    );
+
+    req.log.info({ recipeId, commentId: comment.recipe_comment_id }, 'Comment added successfully');
+
+    return this.created(comment as unknown as RecipeCommentDto);
+  }
+
+  /**
+   * Fork a recipe.
+   *
+   * Creates a personal, editable copy of a public recipe.
+   * The forked recipe can be modified without affecting the original.
+   *
+   * @summary Fork a recipe
+   * @param recipeId The unique identifier of the recipe to fork
+   * @returns The newly created forked recipe
+   */
+  @Post('{recipeId}/fork')
+  @Security('bearerAuth')
+  @SuccessResponse(201, 'Recipe forked successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(404, 'Recipe not found or not public')
+  public async forkRecipe(
+    @Path() recipeId: number,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<RecipeDto>> {
+    const userProfile = req.user as UserProfile;
+    const userId = userProfile.user.user_id;
+
+    req.log.info({ recipeId, userId }, 'Forking recipe');
+
+    const forkedRecipe = await db.recipeRepo.forkRecipe(userId, recipeId, req.log);
+
+    req.log.info(
+      { originalRecipeId: recipeId, forkedRecipeId: forkedRecipe.recipe_id },
+      'Recipe forked successfully',
+    );
+
+    return this.created(forkedRecipe as unknown as RecipeDto);
+  }
+}

src/controllers/stats.controller.test.ts

@@ -0,0 +1,336 @@
+// src/controllers/stats.controller.test.ts
+// ============================================================================
+// STATS CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the StatsController class. These tests verify controller
+// logic in isolation by mocking the admin repository.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Query: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+}));
+
+// Mock admin repository
+vi.mock('../services/db/index.db', () => ({
+  adminRepo: {
+    getMostFrequentSaleItems: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import { adminRepo } from '../services/db/index.db';
+import { StatsController } from './stats.controller';
+
+// Cast mocked modules for type-safe access
+const mockedAdminRepo = adminRepo as Mocked<typeof adminRepo>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    log: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock most frequent sale item.
+ */
+function createMockSaleItem(overrides: Record<string, unknown> = {}) {
+  return {
+    master_item_id: 1,
+    item_name: 'Milk 2%',
+    category_name: 'Dairy & Eggs',
+    sale_count: 15,
+    avg_discount_percent: 25.5,
+    lowest_price_cents: 299,
+    highest_price_cents: 450,
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('StatsController', () => {
+  let controller: StatsController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new StatsController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // MOST FREQUENT SALES
+  // ==========================================================================
+
+  describe('getMostFrequentSales()', () => {
+    it('should return most frequent sale items with default parameters', async () => {
+      // Arrange
+      const mockItems = [
+        createMockSaleItem(),
+        createMockSaleItem({ master_item_id: 2, item_name: 'Bread', sale_count: 12 }),
+      ];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getMostFrequentSales(undefined, undefined, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0].item_name).toBe('Milk 2%');
+        expect(result.data[0].sale_count).toBe(15);
+      }
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        30, // default days
+        10, // default limit
+        expect.anything(),
+      );
+    });
+
+    it('should use custom days parameter', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(60, undefined, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        60,
+        10,
+        expect.anything(),
+      );
+    });
+
+    it('should use custom limit parameter', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(undefined, 25, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        30,
+        25,
+        expect.anything(),
+      );
+    });
+
+    it('should cap days at 365', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(500, undefined, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        365,
+        10,
+        expect.anything(),
+      );
+    });
+
+    it('should floor days at 1', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(0, undefined, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        1,
+        10,
+        expect.anything(),
+      );
+    });
+
+    it('should cap limit at 50', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(undefined, 100, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        30,
+        50,
+        expect.anything(),
+      );
+    });
+
+    it('should floor limit at 1', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(undefined, 0, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        30,
+        1,
+        expect.anything(),
+      );
+    });
+
+    it('should handle negative values', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(-10, -5, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        1, // floored to 1
+        1, // floored to 1
+        expect.anything(),
+      );
+    });
+
+    it('should return empty array when no sale items exist', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue([]);
+
+      // Act
+      const result = await controller.getMostFrequentSales(undefined, undefined, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(0);
+      }
+    });
+
+    it('should handle decimal values by flooring them', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      await controller.getMostFrequentSales(45.7, 15.3, request);
+
+      // Assert
+      expect(mockedAdminRepo.getMostFrequentSaleItems).toHaveBeenCalledWith(
+        45, // floored
+        15, // floored
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // PUBLIC ACCESS (NO AUTH REQUIRED)
+  // ==========================================================================
+
+  describe('Public access', () => {
+    it('should work without user authentication', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest({ user: undefined });
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getMostFrequentSales(undefined, undefined, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(1);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockItems = [createMockSaleItem()];
+      const request = createMockRequest();
+
+      mockedAdminRepo.getMostFrequentSaleItems.mockResolvedValue(mockItems);
+
+      // Act
+      const result = await controller.getMostFrequentSales(undefined, undefined, request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+  });
+});

src/controllers/stats.controller.ts

@@ -0,0 +1,67 @@
+// src/controllers/stats.controller.ts
+// ============================================================================
+// STATS CONTROLLER
+// ============================================================================
+// Provides public endpoints for statistical analysis of sale data.
+// These endpoints are useful for data analysis and do not require authentication.
+//
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import { Get, Route, Tags, Query, Request, SuccessResponse } from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType } from './types';
+import { adminRepo } from '../services/db/index.db';
+import type { MostFrequentSaleItem } from '../types';
+
+// ============================================================================
+// STATS CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for statistical analysis endpoints.
+ *
+ * All endpoints are public and do not require authentication.
+ * These endpoints provide aggregated statistics useful for data analysis.
+ */
+@Route('stats')
+@Tags('Stats')
+export class StatsController extends BaseController {
+  // ==========================================================================
+  // MOST FREQUENT SALES
+  // ==========================================================================
+
+  /**
+   * Get most frequent sale items.
+   *
+   * Returns a list of items that have been on sale most frequently
+   * within the specified time period. This is useful for identifying
+   * items that are regularly discounted.
+   *
+   * @summary Get most frequent sale items
+   * @param days Number of days to look back (1-365, default: 30)
+   * @param limit Maximum number of items to return (1-50, default: 10)
+   * @param request Express request for logging
+   * @returns List of most frequently on-sale items
+   */
+  @Get('most-frequent-sales')
+  @SuccessResponse(200, 'List of most frequently on-sale items')
+  public async getMostFrequentSales(
+    @Query() days?: number,
+    @Query() limit?: number,
+    @Request() request?: ExpressRequest,
+  ): Promise<SuccessResponseType<MostFrequentSaleItem[]>> {
+    // Apply defaults and bounds per the original route implementation
+    // Default: 30 days, 10 items. Max: 365 days, 50 items.
+    const normalizedDays = Math.min(365, Math.max(1, Math.floor(days ?? 30)));
+    const normalizedLimit = Math.min(50, Math.max(1, Math.floor(limit ?? 10)));
+
+    const items = await adminRepo.getMostFrequentSaleItems(
+      normalizedDays,
+      normalizedLimit,
+      request!.log,
+    );
+    return this.success(items);
+  }
+}

src/controllers/store.controller.test.ts

@@ -0,0 +1,624 @@
+// src/controllers/store.controller.test.ts
+// ============================================================================
+// STORE CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the StoreController class. These tests verify controller
+// logic in isolation by mocking database repositories and cache service.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Put: () => () => {},
+  Delete: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock repository methods - these will be accessible via the class instances
+const mockStoreRepoMethods = {
+  getAllStores: vi.fn(),
+  createStore: vi.fn(),
+  updateStore: vi.fn(),
+  deleteStore: vi.fn(),
+};
+
+const mockStoreLocationRepoMethods = {
+  getAllStoresWithLocations: vi.fn(),
+  getStoreWithLocations: vi.fn(),
+  createStoreLocation: vi.fn(),
+  deleteStoreLocation: vi.fn(),
+};
+
+const mockAddressRepoMethods = {
+  upsertAddress: vi.fn(),
+};
+
+// Mock StoreRepository as a class constructor
+vi.mock('../services/db/store.db', () => ({
+  StoreRepository: class MockStoreRepository {
+    getAllStores = mockStoreRepoMethods.getAllStores;
+    createStore = mockStoreRepoMethods.createStore;
+    updateStore = mockStoreRepoMethods.updateStore;
+    deleteStore = mockStoreRepoMethods.deleteStore;
+  },
+}));
+
+// Mock StoreLocationRepository as a class constructor
+vi.mock('../services/db/storeLocation.db', () => ({
+  StoreLocationRepository: class MockStoreLocationRepository {
+    getAllStoresWithLocations = mockStoreLocationRepoMethods.getAllStoresWithLocations;
+    getStoreWithLocations = mockStoreLocationRepoMethods.getStoreWithLocations;
+    createStoreLocation = mockStoreLocationRepoMethods.createStoreLocation;
+    deleteStoreLocation = mockStoreLocationRepoMethods.deleteStoreLocation;
+  },
+}));
+
+// Mock AddressRepository as a class constructor
+vi.mock('../services/db/address.db', () => ({
+  AddressRepository: class MockAddressRepository {
+    upsertAddress = mockAddressRepoMethods.upsertAddress;
+  },
+}));
+
+// Mock database connection
+vi.mock('../services/db/connection.db', () => ({
+  getPool: vi.fn(),
+  withTransaction: vi.fn(async (callback) => {
+    const mockClient = { query: vi.fn() };
+    return callback(mockClient);
+  }),
+}));
+
+// Mock cache service
+vi.mock('../services/cacheService.server', () => ({
+  cacheService: {
+    invalidateStores: vi.fn(),
+    invalidateStore: vi.fn(),
+    invalidateStoreLocations: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import { cacheService } from '../services/cacheService.server';
+import { StoreController } from './store.controller';
+
+// Cast mocked modules for type-safe access
+const mockedCacheService = cacheService as Mocked<typeof cacheService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Admin User',
+    role: 'admin' as const,
+    user: {
+      user_id: 'admin-user-id',
+      email: 'admin@example.com',
+    },
+  };
+}
+
+/**
+ * Creates a mock store object.
+ */
+function createMockStore(overrides: Record<string, unknown> = {}) {
+  return {
+    store_id: 1,
+    name: 'Test Store',
+    logo_url: '/uploads/logos/store.jpg',
+    created_by: 'admin-user-id',
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock store with locations.
+ */
+function createMockStoreWithLocations(overrides: Record<string, unknown> = {}) {
+  return {
+    ...createMockStore(overrides),
+    locations: [
+      {
+        store_location_id: 1,
+        store_id: 1,
+        address_id: 1,
+        address: {
+          address_id: 1,
+          address_line_1: '123 Main St',
+          city: 'Toronto',
+          province_state: 'ON',
+          postal_code: 'M5V 1A1',
+          country: 'Canada',
+          latitude: 43.6532,
+          longitude: -79.3832,
+          created_at: '2024-01-01T00:00:00.000Z',
+          updated_at: '2024-01-01T00:00:00.000Z',
+        },
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+      },
+    ],
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('StoreController', () => {
+  let controller: StoreController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new StoreController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // LIST ENDPOINTS
+  // ==========================================================================
+
+  describe('getStores()', () => {
+    it('should return stores without locations by default', async () => {
+      // Arrange
+      const mockStores = [createMockStore(), createMockStore({ store_id: 2, name: 'Store 2' })];
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.getAllStores.mockResolvedValue(mockStores);
+
+      // Act
+      const result = await controller.getStores(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+      }
+      expect(mockStoreRepoMethods.getAllStores).toHaveBeenCalledWith(expect.anything());
+    });
+
+    it('should return stores with locations when requested', async () => {
+      // Arrange
+      const mockStoresWithLocations = [
+        createMockStoreWithLocations(),
+        createMockStoreWithLocations({ store_id: 2, name: 'Store 2' }),
+      ];
+      const request = createMockRequest();
+
+      mockStoreLocationRepoMethods.getAllStoresWithLocations.mockResolvedValue(
+        mockStoresWithLocations,
+      );
+
+      // Act
+      const result = await controller.getStores(request, true);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data).toHaveLength(2);
+        expect(result.data[0]).toHaveProperty('locations');
+      }
+      expect(mockStoreLocationRepoMethods.getAllStoresWithLocations).toHaveBeenCalledWith(
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // SINGLE RESOURCE ENDPOINTS
+  // ==========================================================================
+
+  describe('getStoreById()', () => {
+    it('should return store with locations', async () => {
+      // Arrange
+      const mockStore = createMockStoreWithLocations();
+      const request = createMockRequest();
+
+      mockStoreLocationRepoMethods.getStoreWithLocations.mockResolvedValue(mockStore);
+
+      // Act
+      const result = await controller.getStoreById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.store_id).toBe(1);
+        expect(result.data.locations).toHaveLength(1);
+      }
+      expect(mockStoreLocationRepoMethods.getStoreWithLocations).toHaveBeenCalledWith(
+        1,
+        expect.anything(),
+      );
+    });
+
+    it('should log successful retrieval', async () => {
+      // Arrange
+      const mockStore = createMockStoreWithLocations();
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockStoreLocationRepoMethods.getStoreWithLocations.mockResolvedValue(mockStore);
+
+      // Act
+      await controller.getStoreById(1, request);
+
+      // Assert
+      expect(mockLog.debug).toHaveBeenCalledWith({ storeId: 1 }, 'Retrieved store by ID');
+    });
+  });
+
+  // ==========================================================================
+  // ADMIN CREATE ENDPOINTS
+  // ==========================================================================
+
+  describe('createStore()', () => {
+    it('should create store without address', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.createStore.mockResolvedValue(1);
+
+      // Act
+      const result = await controller.createStore({ name: 'New Store' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.store_id).toBe(1);
+        expect(result.data.address_id).toBeUndefined();
+        expect(result.data.store_location_id).toBeUndefined();
+      }
+      expect(mockedCacheService.invalidateStores).toHaveBeenCalled();
+    });
+
+    it('should create store with address and location', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.createStore.mockResolvedValue(1);
+      mockAddressRepoMethods.upsertAddress.mockResolvedValue(10);
+      mockStoreLocationRepoMethods.createStoreLocation.mockResolvedValue(20);
+
+      // Act
+      const result = await controller.createStore(
+        {
+          name: 'New Store',
+          logo_url: 'http://example.com/logo.png',
+          address: {
+            address_line_1: '456 Oak Ave',
+            city: 'Vancouver',
+            province_state: 'BC',
+            postal_code: 'V6B 1A1',
+          },
+        },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.store_id).toBe(1);
+        expect(result.data.address_id).toBe(10);
+        expect(result.data.store_location_id).toBe(20);
+      }
+      expect(mockAddressRepoMethods.upsertAddress).toHaveBeenCalledWith(
+        expect.objectContaining({
+          address_line_1: '456 Oak Ave',
+          city: 'Vancouver',
+          country: 'Canada', // default
+        }),
+        expect.anything(),
+      );
+    });
+
+    it('should log store creation', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockStoreRepoMethods.createStore.mockResolvedValue(1);
+
+      // Act
+      await controller.createStore({ name: 'New Store' }, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { storeName: 'New Store', hasAddress: false },
+        'Creating new store',
+      );
+      expect(mockLog.info).toHaveBeenCalledWith({ storeId: 1 }, 'Store created successfully');
+    });
+  });
+
+  // ==========================================================================
+  // ADMIN UPDATE ENDPOINTS
+  // ==========================================================================
+
+  describe('updateStore()', () => {
+    it('should update store name', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.updateStore.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.updateStore(1, { name: 'Updated Store Name' }, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockStoreRepoMethods.updateStore).toHaveBeenCalledWith(
+        1,
+        { name: 'Updated Store Name' },
+        expect.anything(),
+      );
+      expect(mockedCacheService.invalidateStore).toHaveBeenCalledWith(1, expect.anything());
+    });
+
+    it('should update store logo', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.updateStore.mockResolvedValue(undefined);
+
+      // Act
+      await controller.updateStore(1, { logo_url: 'http://example.com/new-logo.png' }, request);
+
+      // Assert
+      expect(mockStoreRepoMethods.updateStore).toHaveBeenCalledWith(
+        1,
+        { logo_url: 'http://example.com/new-logo.png' },
+        expect.anything(),
+      );
+    });
+
+    it('should log update operation', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockStoreRepoMethods.updateStore.mockResolvedValue(undefined);
+
+      // Act
+      await controller.updateStore(1, { name: 'New Name' }, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { storeId: 1, updates: { name: 'New Name' } },
+        'Updating store',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // ADMIN DELETE ENDPOINTS
+  // ==========================================================================
+
+  describe('deleteStore()', () => {
+    it('should delete store and invalidate cache', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.deleteStore.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteStore(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockStoreRepoMethods.deleteStore).toHaveBeenCalledWith(1, expect.anything());
+      expect(mockedCacheService.invalidateStores).toHaveBeenCalledWith(expect.anything());
+    });
+
+    it('should log deletion', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockStoreRepoMethods.deleteStore.mockResolvedValue(undefined);
+
+      // Act
+      await controller.deleteStore(1, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith({ storeId: 1 }, 'Deleting store');
+      expect(mockLog.info).toHaveBeenCalledWith({ storeId: 1 }, 'Store deleted successfully');
+    });
+  });
+
+  // ==========================================================================
+  // LOCATION MANAGEMENT
+  // ==========================================================================
+
+  describe('addLocation()', () => {
+    it('should add location to store', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockAddressRepoMethods.upsertAddress.mockResolvedValue(5);
+      mockStoreLocationRepoMethods.createStoreLocation.mockResolvedValue(10);
+
+      // Act
+      const result = await controller.addLocation(
+        1,
+        {
+          address_line_1: '789 Elm St',
+          city: 'Montreal',
+          province_state: 'QC',
+          postal_code: 'H3B 1A1',
+        },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.store_location_id).toBe(10);
+        expect(result.data.address_id).toBe(5);
+      }
+      expect(mockedCacheService.invalidateStoreLocations).toHaveBeenCalledWith(
+        1,
+        expect.anything(),
+      );
+    });
+
+    it('should use default country if not specified', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockAddressRepoMethods.upsertAddress.mockResolvedValue(5);
+      mockStoreLocationRepoMethods.createStoreLocation.mockResolvedValue(10);
+
+      // Act
+      await controller.addLocation(
+        1,
+        {
+          address_line_1: '789 Elm St',
+          city: 'Montreal',
+          province_state: 'QC',
+          postal_code: 'H3B 1A1',
+        },
+        request,
+      );
+
+      // Assert
+      expect(mockAddressRepoMethods.upsertAddress).toHaveBeenCalledWith(
+        expect.objectContaining({ country: 'Canada' }),
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('deleteLocation()', () => {
+    it('should delete location and invalidate cache', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreLocationRepoMethods.deleteStoreLocation.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteLocation(1, 5, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockStoreLocationRepoMethods.deleteStoreLocation).toHaveBeenCalledWith(
+        5,
+        expect.anything(),
+      );
+      expect(mockedCacheService.invalidateStoreLocations).toHaveBeenCalledWith(
+        1,
+        expect.anything(),
+      );
+    });
+
+    it('should log location removal', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockStoreLocationRepoMethods.deleteStoreLocation.mockResolvedValue(undefined);
+
+      // Act
+      await controller.deleteLocation(1, 5, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        { storeId: 1, locationId: 5 },
+        'Removing location from store',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockStore = createMockStoreWithLocations();
+      const request = createMockRequest();
+
+      mockStoreLocationRepoMethods.getStoreWithLocations.mockResolvedValue(mockStore);
+
+      // Act
+      const result = await controller.getStoreById(1, request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use created helper for 201 responses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.createStore.mockResolvedValue(1);
+
+      // Act
+      const result = await controller.createStore({ name: 'Test' }, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should use noContent helper for 204 responses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockStoreRepoMethods.deleteStore.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.deleteStore(1, request);
+
+      // Assert
+      expect(result).toBeUndefined();
+    });
+  });
+});

src/controllers/store.controller.ts

@@ -0,0 +1,500 @@
+// src/controllers/store.controller.ts
+// ============================================================================
+// STORE CONTROLLER
+// ============================================================================
+// Provides endpoints for managing stores and store locations.
+// Implements endpoints for:
+// - Listing all stores (optionally with locations)
+// - Getting a single store by ID
+// - Creating a new store (admin only)
+// - Updating a store (admin only)
+// - Deleting a store (admin only)
+// - Adding a location to a store (admin only)
+// - Removing a location from a store (admin only)
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Put,
+  Delete,
+  Route,
+  Tags,
+  Path,
+  Query,
+  Body,
+  Request,
+  Security,
+  SuccessResponse,
+  Response,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { StoreRepository } from '../services/db/store.db';
+import { StoreLocationRepository } from '../services/db/storeLocation.db';
+import { AddressRepository } from '../services/db/address.db';
+import { withTransaction } from '../services/db/connection.db';
+import { cacheService } from '../services/cacheService.server';
+import type { UserProfile } from '../types';
+import type { StoreDto, StoreWithLocationsDto } from '../dtos/common.dto';
+
+// ============================================================================
+// REQUEST TYPES
+// ============================================================================
+
+/**
+ * Request body for creating a new store.
+ */
+interface CreateStoreRequest {
+  /**
+   * Store name (must be unique).
+   * @minLength 1
+   * @maxLength 255
+   * @example "Walmart"
+   */
+  name: string;
+
+  /**
+   * URL to store logo image (optional).
+   * @format uri
+   */
+  logo_url?: string | null;
+
+  /**
+   * Initial address for the store (optional).
+   * If provided, creates a store location with this address.
+   */
+  address?: {
+    /**
+     * Street address line 1.
+     * @minLength 1
+     */
+    address_line_1: string;
+
+    /**
+     * Street address line 2 (optional).
+     */
+    address_line_2?: string | null;
+
+    /**
+     * City name.
+     * @minLength 1
+     */
+    city: string;
+
+    /**
+     * Province or state.
+     * @minLength 1
+     */
+    province_state: string;
+
+    /**
+     * Postal or ZIP code.
+     * @minLength 1
+     */
+    postal_code: string;
+
+    /**
+     * Country name (defaults to "Canada").
+     */
+    country?: string;
+  };
+}
+
+/**
+ * Response data for store creation.
+ */
+interface CreateStoreResponseData {
+  /** The created store ID */
+  store_id: number;
+  /** The created address ID (if address was provided) */
+  address_id?: number;
+  /** The created store location ID (if address was provided) */
+  store_location_id?: number;
+}
+
+/**
+ * Request body for updating a store.
+ */
+interface UpdateStoreRequest {
+  /**
+   * New store name (optional).
+   * @minLength 1
+   * @maxLength 255
+   */
+  name?: string;
+
+  /**
+   * New logo URL (optional, set to null to remove).
+   * @format uri
+   */
+  logo_url?: string | null;
+}
+
+/**
+ * Request body for adding a location to a store.
+ */
+interface CreateLocationRequest {
+  /**
+   * Street address line 1.
+   * @minLength 1
+   */
+  address_line_1: string;
+
+  /**
+   * Street address line 2 (optional).
+   */
+  address_line_2?: string | null;
+
+  /**
+   * City name.
+   * @minLength 1
+   */
+  city: string;
+
+  /**
+   * Province or state.
+   * @minLength 1
+   */
+  province_state: string;
+
+  /**
+   * Postal or ZIP code.
+   * @minLength 1
+   */
+  postal_code: string;
+
+  /**
+   * Country name (defaults to "Canada").
+   */
+  country?: string;
+}
+
+/**
+ * Response data for location creation.
+ */
+interface CreateLocationResponseData {
+  /** The created store location ID */
+  store_location_id: number;
+  /** The created address ID */
+  address_id: number;
+}
+
+// ============================================================================
+// STORE CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for store management endpoints.
+ *
+ * Provides read access to all users and write access to admins only.
+ * Supports store CRUD operations and location management.
+ */
+@Route('stores')
+@Tags('Stores')
+export class StoreController extends BaseController {
+  // ==========================================================================
+  // LIST ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get all stores.
+   *
+   * Returns a list of all stores, optionally including their locations and addresses.
+   * Stores are ordered alphabetically by name.
+   *
+   * @summary List all stores
+   * @param includeLocations If true, includes locations and addresses for each store
+   * @returns Array of store objects
+   */
+  @Get()
+  @SuccessResponse(200, 'List of stores retrieved successfully')
+  public async getStores(
+    @Request() req: ExpressRequest,
+    @Query() includeLocations?: boolean,
+  ): Promise<SuccessResponseType<StoreDto[] | StoreWithLocationsDto[]>> {
+    const storeRepo = new StoreRepository();
+    const storeLocationRepo = new StoreLocationRepository();
+
+    if (includeLocations) {
+      const storesWithLocations = await storeLocationRepo.getAllStoresWithLocations(req.log);
+      return this.success(storesWithLocations as unknown as StoreWithLocationsDto[]);
+    }
+
+    const stores = await storeRepo.getAllStores(req.log);
+    return this.success(stores as unknown as StoreDto[]);
+  }
+
+  // ==========================================================================
+  // SINGLE RESOURCE ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get store by ID.
+   *
+   * Returns a single store with all its locations and addresses.
+   *
+   * @summary Get a single store with locations
+   * @param id The unique identifier of the store
+   * @returns The store object with full location details
+   */
+  @Get('{id}')
+  @SuccessResponse(200, 'Store retrieved successfully')
+  @Response<ErrorResponse>(404, 'Store not found')
+  public async getStoreById(
+    @Path() id: number,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<StoreWithLocationsDto>> {
+    const storeLocationRepo = new StoreLocationRepository();
+    const store = await storeLocationRepo.getStoreWithLocations(id, req.log);
+    req.log.debug({ storeId: id }, 'Retrieved store by ID');
+    return this.success(store as unknown as StoreWithLocationsDto);
+  }
+
+  // ==========================================================================
+  // ADMIN ENDPOINTS - CREATE
+  // ==========================================================================
+
+  /**
+   * Create a new store.
+   *
+   * Creates a new store, optionally with an initial address/location.
+   * If an address is provided, it will be created and linked to the store.
+   *
+   * @summary Create a new store (admin only)
+   * @param body Store creation data
+   * @returns The created store IDs
+   */
+  @Post()
+  @Security('bearerAuth', ['admin'])
+  @SuccessResponse(201, 'Store created successfully')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(403, 'Forbidden - admin access required')
+  @Response<ErrorResponse>(409, 'Store with this name already exists')
+  public async createStore(
+    @Body() body: CreateStoreRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<CreateStoreResponseData>> {
+    const userProfile = req.user as UserProfile;
+    const userId = userProfile.user.user_id;
+
+    req.log.info({ storeName: body.name, hasAddress: !!body.address }, 'Creating new store');
+
+    const result = await withTransaction(async (client) => {
+      // Create the store
+      const storeRepo = new StoreRepository(client);
+      const storeId = await storeRepo.createStore(body.name, req.log, body.logo_url, userId);
+
+      // If address provided, create address and link to store
+      let addressId: number | undefined;
+      let storeLocationId: number | undefined;
+
+      if (body.address) {
+        const addressRepo = new AddressRepository(client);
+        addressId = await addressRepo.upsertAddress(
+          {
+            address_line_1: body.address.address_line_1,
+            address_line_2: body.address.address_line_2 || null,
+            city: body.address.city,
+            province_state: body.address.province_state,
+            postal_code: body.address.postal_code,
+            country: body.address.country || 'Canada',
+          },
+          req.log,
+        );
+
+        const storeLocationRepo = new StoreLocationRepository(client);
+        storeLocationId = await storeLocationRepo.createStoreLocation(storeId, addressId, req.log);
+      }
+
+      return { storeId, addressId, storeLocationId };
+    });
+
+    // Invalidate store cache after successful creation
+    await cacheService.invalidateStores(req.log);
+
+    req.log.info({ storeId: result.storeId }, 'Store created successfully');
+
+    return this.created({
+      store_id: result.storeId,
+      address_id: result.addressId,
+      store_location_id: result.storeLocationId,
+    });
+  }
+
+  // ==========================================================================
+  // ADMIN ENDPOINTS - UPDATE
+  // ==========================================================================
+
+  /**
+   * Update a store.
+   *
+   * Updates a store's name and/or logo URL.
+   *
+   * @summary Update a store (admin only)
+   * @param id The unique identifier of the store
+   * @param body Update data
+   */
+  @Put('{id}')
+  @Security('bearerAuth', ['admin'])
+  @SuccessResponse(204, 'Store updated successfully')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(403, 'Forbidden - admin access required')
+  @Response<ErrorResponse>(404, 'Store not found')
+  @Response<ErrorResponse>(409, 'Store with this name already exists')
+  public async updateStore(
+    @Path() id: number,
+    @Body() body: UpdateStoreRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<void> {
+    const storeRepo = new StoreRepository();
+
+    req.log.info({ storeId: id, updates: body }, 'Updating store');
+
+    await storeRepo.updateStore(id, body, req.log);
+
+    // Invalidate cache for this specific store
+    await cacheService.invalidateStore(id, req.log);
+
+    req.log.info({ storeId: id }, 'Store updated successfully');
+
+    return this.noContent();
+  }
+
+  // ==========================================================================
+  // ADMIN ENDPOINTS - DELETE
+  // ==========================================================================
+
+  /**
+   * Delete a store.
+   *
+   * Deletes a store and all its associated locations.
+   * This operation cascades to delete all store_locations entries.
+   *
+   * @summary Delete a store (admin only)
+   * @param id The unique identifier of the store
+   */
+  @Delete('{id}')
+  @Security('bearerAuth', ['admin'])
+  @SuccessResponse(204, 'Store deleted successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(403, 'Forbidden - admin access required')
+  @Response<ErrorResponse>(404, 'Store not found')
+  public async deleteStore(@Path() id: number, @Request() req: ExpressRequest): Promise<void> {
+    const storeRepo = new StoreRepository();
+
+    req.log.info({ storeId: id }, 'Deleting store');
+
+    await storeRepo.deleteStore(id, req.log);
+
+    // Invalidate all store cache after deletion
+    await cacheService.invalidateStores(req.log);
+
+    req.log.info({ storeId: id }, 'Store deleted successfully');
+
+    return this.noContent();
+  }
+
+  // ==========================================================================
+  // LOCATION MANAGEMENT ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Add a location to a store.
+   *
+   * Creates a new address and links it to the store as a location.
+   *
+   * @summary Add a location to a store (admin only)
+   * @param id The store ID
+   * @param body Address data for the new location
+   * @returns The created location and address IDs
+   */
+  @Post('{id}/locations')
+  @Security('bearerAuth', ['admin'])
+  @SuccessResponse(201, 'Location added successfully')
+  @Response<ErrorResponse>(400, 'Validation error')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(403, 'Forbidden - admin access required')
+  @Response<ErrorResponse>(404, 'Store not found')
+  @Response<ErrorResponse>(409, 'This store is already linked to this address')
+  public async addLocation(
+    @Path() id: number,
+    @Body() body: CreateLocationRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<CreateLocationResponseData>> {
+    req.log.info({ storeId: id }, 'Adding location to store');
+
+    const result = await withTransaction(async (client) => {
+      // Create the address
+      const addressRepo = new AddressRepository(client);
+      const addressId = await addressRepo.upsertAddress(
+        {
+          address_line_1: body.address_line_1,
+          address_line_2: body.address_line_2 || null,
+          city: body.city,
+          province_state: body.province_state,
+          postal_code: body.postal_code,
+          country: body.country || 'Canada',
+        },
+        req.log,
+      );
+
+      // Link to store
+      const storeLocationRepo = new StoreLocationRepository(client);
+      const storeLocationId = await storeLocationRepo.createStoreLocation(id, addressId, req.log);
+
+      return { storeLocationId, addressId };
+    });
+
+    // Invalidate cache for this store's locations
+    await cacheService.invalidateStoreLocations(id, req.log);
+
+    req.log.info(
+      { storeId: id, storeLocationId: result.storeLocationId },
+      'Location added successfully',
+    );
+
+    return this.created({
+      store_location_id: result.storeLocationId,
+      address_id: result.addressId,
+    });
+  }
+
+  /**
+   * Remove a location from a store.
+   *
+   * Deletes the link between a store and an address.
+   * The address itself is not deleted (it may be used by other entities).
+   *
+   * @summary Remove a location from a store (admin only)
+   * @param id The store ID
+   * @param locationId The store location ID to remove
+   */
+  @Delete('{id}/locations/{locationId}')
+  @Security('bearerAuth', ['admin'])
+  @SuccessResponse(204, 'Location removed successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(403, 'Forbidden - admin access required')
+  @Response<ErrorResponse>(404, 'Location not found')
+  public async deleteLocation(
+    @Path() id: number,
+    @Path() locationId: number,
+    @Request() req: ExpressRequest,
+  ): Promise<void> {
+    const storeLocationRepo = new StoreLocationRepository();
+
+    req.log.info({ storeId: id, locationId }, 'Removing location from store');
+
+    await storeLocationRepo.deleteStoreLocation(locationId, req.log);
+
+    // Invalidate cache for this store's locations
+    await cacheService.invalidateStoreLocations(id, req.log);
+
+    req.log.info({ storeId: id, locationId }, 'Location removed successfully');
+
+    return this.noContent();
+  }
+}

src/controllers/system.controller.test.ts

@@ -0,0 +1,336 @@
+// src/controllers/system.controller.test.ts
+// ============================================================================
+// SYSTEM CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the SystemController class. These tests verify controller
+// logic in isolation by mocking the system and geocoding services.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock system service
+vi.mock('../services/systemService', () => ({
+  systemService: {
+    getPm2Status: vi.fn(),
+  },
+}));
+
+// Mock geocoding service
+vi.mock('../services/geocodingService.server', () => ({
+  geocodingService: {
+    geocodeAddress: vi.fn(),
+  },
+}));
+
+// Import mocked modules after mock definitions
+import { systemService } from '../services/systemService';
+import { geocodingService } from '../services/geocodingService.server';
+import { SystemController } from './system.controller';
+
+// Cast mocked modules for type-safe access
+const mockedSystemService = systemService as Mocked<typeof systemService>;
+const mockedGeocodingService = geocodingService as Mocked<typeof geocodingService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('SystemController', () => {
+  let controller: SystemController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new SystemController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // PM2 STATUS
+  // ==========================================================================
+
+  describe('getPm2Status()', () => {
+    it('should return PM2 status when process is online', async () => {
+      // Arrange
+      mockedSystemService.getPm2Status.mockResolvedValue({
+        success: true,
+        message: 'flyer-crawler-api is online',
+      });
+
+      // Act
+      const result = await controller.getPm2Status();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.success).toBe(true);
+        expect(result.data.message).toBe('flyer-crawler-api is online');
+      }
+      expect(mockedSystemService.getPm2Status).toHaveBeenCalled();
+    });
+
+    it('should return PM2 status when process is offline', async () => {
+      // Arrange
+      mockedSystemService.getPm2Status.mockResolvedValue({
+        success: false,
+        message: 'flyer-crawler-api is not running',
+      });
+
+      // Act
+      const result = await controller.getPm2Status();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.success).toBe(false);
+        expect(result.data.message).toBe('flyer-crawler-api is not running');
+      }
+    });
+
+    it('should handle PM2 not installed', async () => {
+      // Arrange
+      mockedSystemService.getPm2Status.mockResolvedValue({
+        success: false,
+        message: 'PM2 is not installed or not in PATH',
+      });
+
+      // Act
+      const result = await controller.getPm2Status();
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.success).toBe(false);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // GEOCODE
+  // ==========================================================================
+
+  describe('geocodeAddress()', () => {
+    it('should return coordinates for valid address', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedGeocodingService.geocodeAddress.mockResolvedValue({
+        lat: 49.2827,
+        lng: -123.1207,
+      });
+
+      // Act
+      const result = await controller.geocodeAddress(request, {
+        address: '123 Main St, Vancouver, BC',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.lat).toBe(49.2827);
+        expect(result.data.lng).toBe(-123.1207);
+      }
+      expect(mockedGeocodingService.geocodeAddress).toHaveBeenCalledWith(
+        '123 Main St, Vancouver, BC',
+        expect.anything(),
+      );
+    });
+
+    it('should return error for empty address', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.geocodeAddress(request, {
+        address: '',
+      });
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should return error for whitespace-only address', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.geocodeAddress(request, {
+        address: '   ',
+      });
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should return 404 when address cannot be geocoded', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedGeocodingService.geocodeAddress.mockResolvedValue(null);
+
+      // Act
+      const result = await controller.geocodeAddress(request, {
+        address: 'Invalid Address That Does Not Exist',
+      });
+
+      // Assert
+      expect(result.success).toBe(false);
+    });
+
+    it('should handle complex addresses', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedGeocodingService.geocodeAddress.mockResolvedValue({
+        lat: 43.6532,
+        lng: -79.3832,
+      });
+
+      // Act
+      const result = await controller.geocodeAddress(request, {
+        address: '123 King St W, Suite 500, Toronto, ON M5V 1J2, Canada',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.lat).toBe(43.6532);
+        expect(result.data.lng).toBe(-79.3832);
+      }
+    });
+
+    it('should pass logger to geocoding service', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedGeocodingService.geocodeAddress.mockResolvedValue({
+        lat: 49.2827,
+        lng: -123.1207,
+      });
+
+      // Act
+      await controller.geocodeAddress(request, {
+        address: '123 Main St',
+      });
+
+      // Assert
+      expect(mockedGeocodingService.geocodeAddress).toHaveBeenCalledWith('123 Main St', mockLog);
+    });
+  });
+
+  // ==========================================================================
+  // PUBLIC ACCESS (NO AUTH REQUIRED)
+  // ==========================================================================
+
+  describe('Public access', () => {
+    it('should work without user authentication for PM2 status', async () => {
+      // Arrange
+      mockedSystemService.getPm2Status.mockResolvedValue({
+        success: true,
+        message: 'Process is online',
+      });
+
+      // Act
+      const result = await controller.getPm2Status();
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+
+    it('should work without user authentication for geocoding', async () => {
+      // Arrange
+      const request = createMockRequest({ user: undefined });
+
+      mockedGeocodingService.geocodeAddress.mockResolvedValue({
+        lat: 49.2827,
+        lng: -123.1207,
+      });
+
+      // Act
+      const result = await controller.geocodeAddress(request, {
+        address: '123 Main St',
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      mockedSystemService.getPm2Status.mockResolvedValue({
+        success: true,
+        message: 'Online',
+      });
+
+      // Act
+      const result = await controller.getPm2Status();
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use error helper for validation errors', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act
+      const result = await controller.geocodeAddress(request, {
+        address: '',
+      });
+
+      // Assert
+      expect(result).toHaveProperty('success', false);
+    });
+  });
+});

src/controllers/system.controller.ts

@@ -0,0 +1,135 @@
+// src/controllers/system.controller.ts
+// ============================================================================
+// SYSTEM CONTROLLER
+// ============================================================================
+// Provides system-level endpoints for diagnostics and utility services.
+// Includes PM2 status checking and geocoding functionality.
+//
+// Most endpoints are public (no authentication required).
+// Implements ADR-028 (API Response Format) via BaseController.
+// ============================================================================
+
+import { Get, Post, Route, Tags, Body, Request, SuccessResponse, Response } from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import { systemService } from '../services/systemService';
+import { geocodingService } from '../services/geocodingService.server';
+
+// ============================================================================
+// REQUEST/RESPONSE TYPES
+// ============================================================================
+
+/**
+ * Response from PM2 status check.
+ */
+interface Pm2StatusResponse {
+  /** Whether the PM2 process is online */
+  success: boolean;
+  /** Human-readable status message */
+  message: string;
+}
+
+/**
+ * Request body for geocoding an address.
+ */
+interface GeocodeRequest {
+  /** Address string to geocode */
+  address: string;
+}
+
+/**
+ * Geocoded coordinates response.
+ */
+interface GeocodeResponse {
+  /** Latitude */
+  lat: number;
+  /** Longitude */
+  lng: number;
+}
+
+// ============================================================================
+// SYSTEM CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for system-level operations.
+ *
+ * Provides diagnostic and utility endpoints. These endpoints are primarily
+ * used for development, monitoring, and supporting application features
+ * that need server-side processing (like geocoding).
+ */
+@Route('system')
+@Tags('System')
+export class SystemController extends BaseController {
+  // ==========================================================================
+  // PM2 STATUS
+  // ==========================================================================
+
+  /**
+   * Get PM2 process status.
+   *
+   * Checks the status of the 'flyer-crawler-api' process managed by PM2.
+   * Useful for development and diagnostic purposes to verify the application
+   * is running correctly under PM2 process management.
+   *
+   * @summary Get PM2 process status
+   * @returns PM2 process status information
+   */
+  @Get('pm2-status')
+  @SuccessResponse(200, 'PM2 process status information')
+  public async getPm2Status(): Promise<SuccessResponseType<Pm2StatusResponse>> {
+    const status = await systemService.getPm2Status();
+    return this.success(status);
+  }
+
+  // ==========================================================================
+  // GEOCODE
+  // ==========================================================================
+
+  /**
+   * Geocode an address.
+   *
+   * Geocodes a given address string, returning latitude and longitude
+   * coordinates. Acts as a secure proxy to geocoding services (Google Maps
+   * Geocoding API with Nominatim fallback), keeping API keys server-side.
+   *
+   * Results are cached in Redis for 30 days to reduce API calls.
+   *
+   * @summary Geocode an address
+   * @param request Express request for logging
+   * @param body Request body containing the address to geocode
+   * @returns Geocoded coordinates
+   */
+  @Post('geocode')
+  @SuccessResponse(200, 'Geocoded coordinates')
+  @Response<ErrorResponse>(400, 'Invalid request - address is required')
+  @Response<ErrorResponse>(404, 'Could not geocode the provided address')
+  public async geocodeAddress(
+    @Request() request: ExpressRequest,
+    @Body() body: GeocodeRequest,
+  ): Promise<SuccessResponseType<GeocodeResponse>> {
+    const { address } = body;
+
+    // Validate address
+    if (!address || address.trim() === '') {
+      this.setStatus(400);
+      return this.error(
+        this.ErrorCode.BAD_REQUEST,
+        'An address string is required.',
+      ) as unknown as SuccessResponseType<GeocodeResponse>;
+    }
+
+    const coordinates = await geocodingService.geocodeAddress(address, request.log);
+
+    if (!coordinates) {
+      this.setStatus(404);
+      return this.error(
+        this.ErrorCode.NOT_FOUND,
+        'Could not geocode the provided address.',
+      ) as unknown as SuccessResponseType<GeocodeResponse>;
+    }
+
+    return this.success(coordinates);
+  }
+}

src/controllers/types.ts

@@ -0,0 +1,381 @@
+// src/controllers/types.ts
+// ============================================================================
+// TSOA CONTROLLER TYPE DEFINITIONS
+// ============================================================================
+// Shared types for tsoa controllers that match the existing API response
+// patterns defined in ADR-028 and implemented in src/types/api.ts.
+//
+// These types are designed to be used with tsoa's automatic OpenAPI generation
+// while maintaining full compatibility with the existing Express route handlers.
+// ============================================================================
+
+import type { Logger } from 'pino';
+import type { PoolClient } from 'pg';
+
+// ============================================================================
+// RESPONSE TYPES
+// ============================================================================
+// These types mirror the structures in src/types/api.ts but are designed
+// for tsoa's type inference system. tsoa generates OpenAPI specs from these
+// types, so they must be concrete interfaces (not type aliases with generics
+// that tsoa cannot introspect).
+// ============================================================================
+
+/**
+ * Standard pagination metadata included in paginated responses.
+ * Matches the PaginationMeta interface in src/types/api.ts.
+ */
+export interface PaginationMeta {
+  /** Current page number (1-indexed) */
+  page: number;
+  /** Number of items per page */
+  limit: number;
+  /** Total number of items across all pages */
+  total: number;
+  /** Total number of pages */
+  totalPages: number;
+  /** Whether there is a next page */
+  hasNextPage: boolean;
+  /** Whether there is a previous page */
+  hasPrevPage: boolean;
+}
+
+/**
+ * Optional metadata that can be included in any response.
+ * Matches the ResponseMeta interface in src/types/api.ts.
+ */
+export interface ResponseMeta {
+  /** Unique request identifier for tracking/debugging */
+  requestId?: string;
+  /** ISO timestamp of when the response was generated */
+  timestamp?: string;
+  /** Pagination info (only for paginated responses) */
+  pagination?: PaginationMeta;
+}
+
+/**
+ * Standard success response envelope.
+ * All successful API responses follow this structure per ADR-028.
+ *
+ * @example
+ * // Single item response
+ * {
+ *   "success": true,
+ *   "data": { "id": 1, "name": "Item" }
+ * }
+ *
+ * @example
+ * // Paginated list response
+ * {
+ *   "success": true,
+ *   "data": [{ "id": 1 }, { "id": 2 }],
+ *   "meta": {
+ *     "pagination": { "page": 1, "limit": 20, "total": 100, ... }
+ *   }
+ * }
+ */
+export interface SuccessResponse<T> {
+  /** Always true for successful responses */
+  success: true;
+  /** The response payload */
+  data: T;
+  /** Optional metadata (requestId, pagination, etc.) */
+  meta?: ResponseMeta;
+}
+
+/**
+ * Error details structure for API error responses.
+ */
+export interface ErrorDetails {
+  /** Machine-readable error code (e.g., 'VALIDATION_ERROR', 'NOT_FOUND') */
+  code: string;
+  /** Human-readable error message */
+  message: string;
+  /** Additional error details (validation errors, stack trace in dev, etc.) */
+  details?: unknown;
+}
+
+/**
+ * Standard error response envelope.
+ * All error responses follow this structure per ADR-028.
+ *
+ * @example
+ * // Validation error
+ * {
+ *   "success": false,
+ *   "error": {
+ *     "code": "VALIDATION_ERROR",
+ *     "message": "The request data is invalid.",
+ *     "details": [{ "path": ["email"], "message": "Invalid email format" }]
+ *   }
+ * }
+ *
+ * @example
+ * // Not found error
+ * {
+ *   "success": false,
+ *   "error": {
+ *     "code": "NOT_FOUND",
+ *     "message": "User not found"
+ *   }
+ * }
+ */
+export interface ErrorResponse {
+  /** Always false for error responses */
+  success: false;
+  /** Error information */
+  error: ErrorDetails;
+  /** Optional metadata (requestId for error tracking) */
+  meta?: Pick<ResponseMeta, 'requestId' | 'timestamp'>;
+}
+
+/**
+ * Union type for all API responses.
+ * Useful for frontend type narrowing based on `success` field.
+ */
+export type ApiResponse<T> = SuccessResponse<T> | ErrorResponse;
+
+// ============================================================================
+// COMMON RESPONSE TYPES
+// ============================================================================
+// Pre-defined response types for common API patterns. These provide concrete
+// types that tsoa can use for OpenAPI generation.
+//
+// Note: MessageResponse is now imported from common.dto.ts to avoid duplicate
+// definitions that cause tsoa route generation errors.
+// ============================================================================
+
+// Re-export MessageResponse from the central DTO definitions
+export type { MessageResponse } from '../dtos/common.dto';
+
+/**
+ * Health check response for liveness/readiness probes.
+ */
+export interface HealthResponse {
+  status: 'ok' | 'healthy' | 'degraded' | 'unhealthy';
+  timestamp: string;
+}
+
+/**
+ * Detailed health check response with service status.
+ */
+export interface DetailedHealthResponse extends HealthResponse {
+  uptime: number;
+  services: Record<string, ServiceHealth>;
+}
+
+/**
+ * Individual service health status.
+ */
+export interface ServiceHealth {
+  status: 'healthy' | 'degraded' | 'unhealthy';
+  latency?: number;
+  message?: string;
+  details?: Record<string, unknown>;
+}
+
+// ============================================================================
+// REQUEST CONTEXT
+// ============================================================================
+// RequestContext provides dependency injection for controllers, allowing
+// access to request-scoped resources like loggers, database transactions,
+// and authenticated user information.
+// ============================================================================
+
+/**
+ * Authenticated user context extracted from JWT token.
+ * Contains the minimum information needed for authorization checks.
+ */
+export interface AuthenticatedUser {
+  /** The user's unique identifier (UUID) */
+  userId: string;
+  /** The user's email address */
+  email: string;
+  /** User roles for authorization (e.g., ['user', 'admin']) */
+  roles?: string[];
+}
+
+/**
+ * Request context providing dependency injection for controller methods.
+ *
+ * Controllers should accept a RequestContext parameter (injected via tsoa's
+ * @Request decorator) to access request-scoped resources like logging,
+ * database transactions, and authenticated user information.
+ *
+ * @example
+ * ```typescript
+ * @Get('{id}')
+ * public async getUser(
+ *   @Path() id: string,
+ *   @Request() ctx: RequestContext,
+ * ): Promise<SuccessResponse<User>> {
+ *   ctx.logger.info({ userId: id }, 'Fetching user');
+ *   const user = await userService.getUserById(id, ctx.logger);
+ *   return this.success(user);
+ * }
+ * ```
+ */
+export interface RequestContext {
+  /**
+   * Request-scoped Pino logger instance.
+   * Includes request context (requestId, userId, etc.) for log correlation.
+   *
+   * @see ADR-004 for logging standards
+   */
+  logger: Logger;
+
+  /**
+   * Unique identifier for this request.
+   * Used for log correlation and error tracking in Bugsink.
+   */
+  requestId: string;
+
+  /**
+   * Authenticated user information extracted from JWT token.
+   * Undefined for unauthenticated requests (public endpoints).
+   */
+  user?: AuthenticatedUser;
+
+  /**
+   * Optional database client for transaction support.
+   * When provided, all database operations should use this client
+   * to participate in the same transaction.
+   *
+   * @example
+   * ```typescript
+   * // In a controller method that needs a transaction:
+   * const result = await withTransaction(async (client) => {
+   *   const ctx = { ...requestContext, dbClient: client };
+   *   return await this.createOrderWithItems(orderData, ctx);
+   * });
+   * ```
+   */
+  dbClient?: PoolClient;
+}
+
+// ============================================================================
+// PAGINATION
+// ============================================================================
+// Types for handling paginated requests and responses.
+// ============================================================================
+
+/**
+ * Standard pagination query parameters.
+ * Used in list endpoints to control result pagination.
+ *
+ * @example
+ * ```typescript
+ * @Get()
+ * public async listUsers(
+ *   @Query() page?: number,
+ *   @Query() limit?: number,
+ * ): Promise<PaginatedResponse<User>> {
+ *   // ...
+ * }
+ * ```
+ */
+export interface PaginationParams {
+  /** Page number (1-indexed). Defaults to 1. */
+  page?: number;
+  /** Number of items per page. Defaults to 20, max 100. */
+  limit?: number;
+}
+
+/**
+ * Input for calculating pagination metadata.
+ * Used internally by the base controller's paginated response helpers.
+ */
+export interface PaginationInput {
+  page: number;
+  limit: number;
+  total: number;
+}
+
+/**
+ * Paginated response wrapper.
+ * Combines array data with pagination metadata.
+ */
+export interface PaginatedResponse<T> extends SuccessResponse<T[]> {
+  meta: ResponseMeta & {
+    pagination: PaginationMeta;
+  };
+}
+
+// ============================================================================
+// ERROR CODES
+// ============================================================================
+// Standard error codes used across the API, matching src/types/api.ts.
+// ============================================================================
+
+/**
+ * Standard error codes for consistent error identification.
+ * These match the ErrorCode object in src/types/api.ts.
+ */
+export const ControllerErrorCode = {
+  // Client errors (4xx)
+  VALIDATION_ERROR: 'VALIDATION_ERROR',
+  NOT_FOUND: 'NOT_FOUND',
+  UNAUTHORIZED: 'UNAUTHORIZED',
+  FORBIDDEN: 'FORBIDDEN',
+  CONFLICT: 'CONFLICT',
+  BAD_REQUEST: 'BAD_REQUEST',
+  RATE_LIMITED: 'RATE_LIMITED',
+  PAYLOAD_TOO_LARGE: 'PAYLOAD_TOO_LARGE',
+
+  // Server errors (5xx)
+  INTERNAL_ERROR: 'INTERNAL_ERROR',
+  SERVICE_UNAVAILABLE: 'SERVICE_UNAVAILABLE',
+  EXTERNAL_SERVICE_ERROR: 'EXTERNAL_SERVICE_ERROR',
+  NOT_IMPLEMENTED: 'NOT_IMPLEMENTED',
+} as const;
+
+export type ControllerErrorCodeType =
+  (typeof ControllerErrorCode)[keyof typeof ControllerErrorCode];
+
+// ============================================================================
+// VALIDATION
+// ============================================================================
+// Types for request validation errors.
+// ============================================================================
+
+/**
+ * A single validation issue from Zod or similar validation library.
+ */
+export interface ValidationIssue {
+  /** Path to the invalid field (e.g., ['body', 'email']) */
+  path: (string | number)[];
+  /** Human-readable error message */
+  message: string;
+  /** Additional context (varies by validation library) */
+  [key: string]: unknown;
+}
+
+/**
+ * Validation error response with detailed field-level errors.
+ */
+export interface ValidationErrorResponse extends ErrorResponse {
+  error: ErrorDetails & {
+    /** Array of validation issues for each invalid field */
+    details: ValidationIssue[];
+  };
+}
+
+// ============================================================================
+// TYPE GUARDS
+// ============================================================================
+// Runtime type guards for response type narrowing.
+// ============================================================================
+
+/**
+ * Type guard to check if a response is a success response.
+ */
+export function isSuccessResponse<T>(response: ApiResponse<T>): response is SuccessResponse<T> {
+  return response.success === true;
+}
+
+/**
+ * Type guard to check if a response is an error response.
+ */
+export function isErrorResponse<T>(response: ApiResponse<T>): response is ErrorResponse {
+  return response.success === false;
+}

src/controllers/upc.controller.test.ts

@@ -0,0 +1,544 @@
+// src/controllers/upc.controller.test.ts
+// ============================================================================
+// UPC CONTROLLER UNIT TESTS
+// ============================================================================
+// Unit tests for the UpcController class. These tests verify controller
+// logic in isolation by mocking the UPC service.
+// ============================================================================
+
+import { describe, it, expect, vi, beforeEach, afterEach, type Mocked } from 'vitest';
+import type { Request as ExpressRequest } from 'express';
+import { createMockLogger } from '../tests/utils/testHelpers';
+
+// ============================================================================
+// MOCK SETUP
+// ============================================================================
+
+// Mock tsoa decorators and Controller class
+vi.mock('tsoa', () => ({
+  Controller: class Controller {
+    protected setStatus(status: number): void {
+      this._status = status;
+    }
+    private _status = 200;
+  },
+  Get: () => () => {},
+  Post: () => () => {},
+  Route: () => () => {},
+  Tags: () => () => {},
+  Security: () => () => {},
+  Path: () => () => {},
+  Query: () => () => {},
+  Body: () => () => {},
+  Request: () => () => {},
+  SuccessResponse: () => () => {},
+  Response: () => () => {},
+}));
+
+// Mock UPC service
+vi.mock('../services/upcService.server', () => ({
+  scanUpc: vi.fn(),
+  lookupUpc: vi.fn(),
+  getScanHistory: vi.fn(),
+  getScanById: vi.fn(),
+  getScanStats: vi.fn(),
+  linkUpcToProduct: vi.fn(),
+}));
+
+// Import mocked modules after mock definitions
+import * as upcService from '../services/upcService.server';
+import { UpcController } from './upc.controller';
+
+// Cast mocked modules for type-safe access
+const mockedUpcService = upcService as Mocked<typeof upcService>;
+
+// ============================================================================
+// HELPER FUNCTIONS
+// ============================================================================
+
+/**
+ * Creates a mock Express request object with authenticated user.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: createMockLogger(),
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock user profile for testing.
+ */
+function createMockUserProfile() {
+  return {
+    full_name: 'Test User',
+    role: 'user' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'test-user-id',
+      email: 'test@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock admin user profile.
+ */
+function createMockAdminProfile() {
+  return {
+    full_name: 'Admin User',
+    role: 'admin' as const,
+    points: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    user: {
+      user_id: 'admin-user-id',
+      email: 'admin@example.com',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+  };
+}
+
+/**
+ * Creates a mock scan result.
+ */
+function createMockScanResult() {
+  return {
+    scan_id: 1,
+    upc_code: '012345678901',
+    product: {
+      product_id: 100,
+      name: 'Test Product',
+      brand: 'Test Brand',
+      category: 'Grocery',
+      description: 'A test product',
+      size: '500g',
+      upc_code: '012345678901',
+      image_url: null,
+      master_item_id: 50,
+    },
+    external_lookup: null,
+    confidence: 0.95,
+    lookup_successful: true,
+    is_new_product: false,
+    scanned_at: '2024-01-01T00:00:00.000Z',
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('UpcController', () => {
+  let controller: UpcController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    controller = new UpcController();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  // ==========================================================================
+  // SCAN ENDPOINTS
+  // ==========================================================================
+
+  describe('scanUpc()', () => {
+    it('should scan a UPC code successfully', async () => {
+      // Arrange
+      const mockResult = createMockScanResult();
+      const request = createMockRequest();
+
+      mockedUpcService.scanUpc.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.scanUpc(
+        {
+          upc_code: '012345678901',
+          scan_source: 'manual_entry',
+        },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.upc_code).toBe('012345678901');
+        expect(result.data.lookup_successful).toBe(true);
+      }
+    });
+
+    it('should reject when neither upc_code nor image provided', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      // Act & Assert
+      await expect(controller.scanUpc({ scan_source: 'manual_entry' }, request)).rejects.toThrow(
+        'Either upc_code or image_base64 must be provided.',
+      );
+    });
+
+    it('should support image-based scanning', async () => {
+      // Arrange
+      const mockResult = createMockScanResult();
+      const request = createMockRequest();
+
+      mockedUpcService.scanUpc.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.scanUpc(
+        {
+          image_base64: 'base64encodedimage',
+          scan_source: 'image_upload',
+        },
+        request,
+      );
+
+      // Assert
+      expect(result.success).toBe(true);
+      expect(mockedUpcService.scanUpc).toHaveBeenCalledWith(
+        'test-user-id',
+        expect.objectContaining({
+          image_base64: 'base64encodedimage',
+          scan_source: 'image_upload',
+        }),
+        expect.anything(),
+      );
+    });
+
+    it('should log scan requests', async () => {
+      // Arrange
+      const mockResult = createMockScanResult();
+      const mockLog = createMockLogger();
+      const request = createMockRequest({ log: mockLog });
+
+      mockedUpcService.scanUpc.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.scanUpc({ upc_code: '012345678901', scan_source: 'manual_entry' }, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        expect.objectContaining({
+          userId: 'test-user-id',
+          scanSource: 'manual_entry',
+        }),
+        'UPC scan request received',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // LOOKUP ENDPOINTS
+  // ==========================================================================
+
+  describe('lookupUpc()', () => {
+    it('should lookup a UPC code', async () => {
+      // Arrange
+      const mockResult = {
+        upc_code: '012345678901',
+        product: {
+          product_id: 1,
+          name: 'Test',
+          brand: 'Test Brand',
+          category: 'Grocery',
+          description: 'A test product',
+          size: '500g',
+          upc_code: '012345678901',
+          image_url: null,
+          master_item_id: 50,
+        },
+        external_lookup: null,
+        found: true,
+        from_cache: false,
+      };
+      const request = createMockRequest();
+
+      mockedUpcService.lookupUpc.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.lookupUpc(request, '012345678901');
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.upc_code).toBe('012345678901');
+        expect(result.data.found).toBe(true);
+      }
+    });
+
+    it('should support force refresh option', async () => {
+      // Arrange
+      const mockResult = {
+        upc_code: '012345678901',
+        product: null,
+        external_lookup: null,
+        found: false,
+        from_cache: false,
+      };
+      const request = createMockRequest();
+
+      mockedUpcService.lookupUpc.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.lookupUpc(request, '012345678901', true, true);
+
+      // Assert
+      expect(mockedUpcService.lookupUpc).toHaveBeenCalledWith(
+        { upc_code: '012345678901', force_refresh: true },
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // HISTORY ENDPOINTS
+  // ==========================================================================
+
+  describe('getScanHistory()', () => {
+    it('should return scan history with default pagination', async () => {
+      // Arrange
+      const mockResult = {
+        scans: [
+          {
+            scan_id: 1,
+            user_id: 'test-user-id',
+            upc_code: '012345678901',
+            product_id: 100,
+            scan_source: 'manual_entry' as const,
+            scan_confidence: 0.95,
+            raw_image_path: null,
+            lookup_successful: true,
+            created_at: '2024-01-01T00:00:00.000Z',
+            updated_at: '2024-01-01T00:00:00.000Z',
+          },
+        ],
+        total: 1,
+      };
+      const request = createMockRequest();
+
+      mockedUpcService.getScanHistory.mockResolvedValue(mockResult);
+
+      // Act
+      const result = await controller.getScanHistory(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.scans).toHaveLength(1);
+        expect(result.data.total).toBe(1);
+      }
+      expect(mockedUpcService.getScanHistory).toHaveBeenCalledWith(
+        expect.objectContaining({
+          user_id: 'test-user-id',
+          limit: 50,
+          offset: 0,
+        }),
+        expect.anything(),
+      );
+    });
+
+    it('should cap limit at 100', async () => {
+      // Arrange
+      const mockResult = { scans: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedUpcService.getScanHistory.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getScanHistory(request, 200);
+
+      // Assert
+      expect(mockedUpcService.getScanHistory).toHaveBeenCalledWith(
+        expect.objectContaining({ limit: 100 }),
+        expect.anything(),
+      );
+    });
+
+    it('should support filtering by scan source', async () => {
+      // Arrange
+      const mockResult = { scans: [], total: 0 };
+      const request = createMockRequest();
+
+      mockedUpcService.getScanHistory.mockResolvedValue(mockResult);
+
+      // Act
+      await controller.getScanHistory(request, 50, 0, undefined, 'camera_scan');
+
+      // Assert
+      expect(mockedUpcService.getScanHistory).toHaveBeenCalledWith(
+        expect.objectContaining({ scan_source: 'camera_scan' }),
+        expect.anything(),
+      );
+    });
+  });
+
+  describe('getScanById()', () => {
+    it('should return a specific scan record', async () => {
+      // Arrange
+      const mockScan = {
+        scan_id: 1,
+        user_id: 'test-user-id',
+        upc_code: '012345678901',
+        product_id: 100,
+        scan_source: 'manual_entry' as const,
+        scan_confidence: 0.95,
+        raw_image_path: null,
+        lookup_successful: true,
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+      };
+      const request = createMockRequest();
+
+      mockedUpcService.getScanById.mockResolvedValue(mockScan);
+
+      // Act
+      const result = await controller.getScanById(1, request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.scan_id).toBe(1);
+      }
+      expect(mockedUpcService.getScanById).toHaveBeenCalledWith(
+        1,
+        'test-user-id',
+        expect.anything(),
+      );
+    });
+  });
+
+  // ==========================================================================
+  // STATISTICS ENDPOINTS
+  // ==========================================================================
+
+  describe('getScanStats()', () => {
+    it('should return scan statistics', async () => {
+      // Arrange
+      const mockStats = {
+        total_scans: 100,
+        successful_lookups: 85,
+        unique_products: 50,
+        scans_today: 5,
+        scans_this_week: 20,
+      };
+      const request = createMockRequest();
+
+      mockedUpcService.getScanStats.mockResolvedValue(mockStats);
+
+      // Act
+      const result = await controller.getScanStats(request);
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.total_scans).toBe(100);
+        expect(result.data.successful_lookups).toBe(85);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // ADMIN ENDPOINTS
+  // ==========================================================================
+
+  describe('linkUpcToProduct()', () => {
+    it('should link UPC to product (admin)', async () => {
+      // Arrange
+      const request = createMockRequest({ user: createMockAdminProfile() });
+
+      mockedUpcService.linkUpcToProduct.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.linkUpcToProduct(
+        { upc_code: '012345678901', product_id: 100 },
+        request,
+      );
+
+      // Assert
+      expect(result).toBeUndefined();
+      expect(mockedUpcService.linkUpcToProduct).toHaveBeenCalledWith(
+        100,
+        '012345678901',
+        expect.anything(),
+      );
+    });
+
+    it('should log link operations', async () => {
+      // Arrange
+      const mockLog = createMockLogger();
+      const request = createMockRequest({
+        user: createMockAdminProfile(),
+        log: mockLog,
+      });
+
+      mockedUpcService.linkUpcToProduct.mockResolvedValue(undefined);
+
+      // Act
+      await controller.linkUpcToProduct({ upc_code: '012345678901', product_id: 100 }, request);
+
+      // Assert
+      expect(mockLog.info).toHaveBeenCalledWith(
+        expect.objectContaining({
+          productId: 100,
+          upcCode: '012345678901',
+        }),
+        'UPC link request received',
+      );
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockStats = {
+        total_scans: 0,
+        successful_lookups: 0,
+        unique_products: 0,
+        scans_today: 0,
+        scans_this_week: 0,
+      };
+      const request = createMockRequest();
+
+      mockedUpcService.getScanStats.mockResolvedValue(mockStats);
+
+      // Act
+      const result = await controller.getScanStats(request);
+
+      // Assert
+      expect(result).toHaveProperty('success', true);
+      expect(result).toHaveProperty('data');
+    });
+
+    it('should use noContent helper for 204 responses', async () => {
+      // Arrange
+      const request = createMockRequest({ user: createMockAdminProfile() });
+
+      mockedUpcService.linkUpcToProduct.mockResolvedValue(undefined);
+
+      // Act
+      const result = await controller.linkUpcToProduct(
+        { upc_code: '012345678901', product_id: 1 },
+        request,
+      );
+
+      // Assert
+      expect(result).toBeUndefined();
+    });
+  });
+});

src/controllers/upc.controller.ts

@@ -0,0 +1,502 @@
+// src/controllers/upc.controller.ts
+// ============================================================================
+// UPC CONTROLLER
+// ============================================================================
+// Provides endpoints for UPC barcode scanning, lookup, and management.
+// Implements endpoints for:
+// - Scanning a UPC barcode (manual entry or image)
+// - Looking up a UPC code
+// - Getting scan history
+// - Getting a single scan by ID
+// - Getting scan statistics
+// - Linking a UPC to a product (admin only)
+//
+// All UPC endpoints require authentication.
+// ============================================================================
+
+import {
+  Get,
+  Post,
+  Route,
+  Tags,
+  Path,
+  Query,
+  Body,
+  Request,
+  Security,
+  SuccessResponse,
+  Response,
+} from 'tsoa';
+import type { Request as ExpressRequest } from 'express';
+import { BaseController } from './base.controller';
+import type { SuccessResponse as SuccessResponseType, ErrorResponse } from './types';
+import * as upcService from '../services/upcService.server';
+import type { UserProfile } from '../types';
+import type { UpcScanSource } from '../types/upc';
+
+// ============================================================================
+// DTO TYPES FOR OPENAPI
+// ============================================================================
+// Data Transfer Objects that are tsoa-compatible for API documentation.
+// ============================================================================
+
+/**
+ * Product match from our database.
+ */
+interface ProductMatchDto {
+  /** Internal product ID */
+  product_id: number;
+  /** Product name */
+  name: string;
+  /** Brand name, if known */
+  brand: string | null;
+  /** Product category */
+  category: string | null;
+  /** Product description */
+  description: string | null;
+  /** Product size/weight */
+  size: string | null;
+  /** The UPC code */
+  upc_code: string;
+  /** Product image URL */
+  image_url: string | null;
+  /** Link to master grocery item */
+  master_item_id: number | null;
+}
+
+/**
+ * Product information from external lookup.
+ */
+interface ExternalProductInfoDto {
+  /** Product name from external source */
+  name: string;
+  /** Brand name from external source */
+  brand: string | null;
+  /** Product category from external source */
+  category: string | null;
+  /** Product description from external source */
+  description: string | null;
+  /** Product image URL from external source */
+  image_url: string | null;
+  /** Which external API provided this data */
+  source: string;
+}
+
+/**
+ * Complete result from a UPC scan operation.
+ */
+interface ScanResultDto {
+  /** ID of the recorded scan */
+  scan_id: number;
+  /** The scanned UPC code */
+  upc_code: string;
+  /** Matched product from our database, if found */
+  product: ProductMatchDto | null;
+  /** Product info from external lookup, if performed */
+  external_lookup: ExternalProductInfoDto | null;
+  /** Confidence score of barcode detection (0.0-1.0) */
+  confidence: number | null;
+  /** Whether any product info was found */
+  lookup_successful: boolean;
+  /** Whether this UPC was not previously in our database */
+  is_new_product: boolean;
+  /** Timestamp of the scan */
+  scanned_at: string;
+}
+
+/**
+ * Result from a UPC lookup.
+ */
+interface LookupResultDto {
+  /** The looked up UPC code */
+  upc_code: string;
+  /** Matched product from our database, if found */
+  product: ProductMatchDto | null;
+  /** Product info from external lookup, if performed */
+  external_lookup: ExternalProductInfoDto | null;
+  /** Whether any product info was found */
+  found: boolean;
+  /** Whether the lookup result came from cache */
+  from_cache: boolean;
+}
+
+/**
+ * UPC scan history record.
+ */
+interface ScanHistoryRecordDto {
+  /** Primary key */
+  scan_id: number;
+  /** User who performed the scan */
+  user_id: string;
+  /** The scanned UPC code */
+  upc_code: string;
+  /** Matched product ID, if found */
+  product_id: number | null;
+  /** How the scan was performed */
+  scan_source: string;
+  /** Confidence score from barcode detection */
+  scan_confidence: number | null;
+  /** Path to uploaded barcode image */
+  raw_image_path: string | null;
+  /** Whether the lookup found product info */
+  lookup_successful: boolean;
+  /** When the scan was recorded */
+  created_at: string;
+  /** Last update timestamp */
+  updated_at: string;
+}
+
+/**
+ * Scan history list with total count.
+ */
+interface ScanHistoryResponseDto {
+  /** List of scan history records */
+  scans: ScanHistoryRecordDto[];
+  /** Total count for pagination */
+  total: number;
+}
+
+/**
+ * User scan statistics.
+ */
+interface ScanStatsDto {
+  /** Total number of scans performed */
+  total_scans: number;
+  /** Number of scans that found product info */
+  successful_lookups: number;
+  /** Number of unique products scanned */
+  unique_products: number;
+  /** Number of scans today */
+  scans_today: number;
+  /** Number of scans this week */
+  scans_this_week: number;
+}
+
+// ============================================================================
+// REQUEST TYPES
+// ============================================================================
+
+/**
+ * Valid scan source types.
+ */
+type ScanSourceType = 'image_upload' | 'manual_entry' | 'phone_app' | 'camera_scan';
+
+/**
+ * Request body for scanning a UPC barcode.
+ */
+interface ScanUpcRequest {
+  /**
+   * UPC code entered manually (8-14 digits).
+   * Either this or image_base64 must be provided.
+   * @pattern ^[0-9]{8,14}$
+   * @example "012345678901"
+   */
+  upc_code?: string;
+
+  /**
+   * Base64-encoded image containing a barcode.
+   * Either this or upc_code must be provided.
+   */
+  image_base64?: string;
+
+  /**
+   * How the scan was initiated.
+   * @example "manual_entry"
+   */
+  scan_source: ScanSourceType;
+}
+
+/**
+ * Request body for linking a UPC to a product (admin only).
+ */
+interface LinkUpcRequest {
+  /**
+   * The UPC code to link (8-14 digits).
+   * @pattern ^[0-9]{8,14}$
+   * @example "012345678901"
+   */
+  upc_code: string;
+
+  /**
+   * The product ID to link the UPC to.
+   * @isInt
+   * @minimum 1
+   */
+  product_id: number;
+}
+
+// ============================================================================
+// UPC CONTROLLER
+// ============================================================================
+
+/**
+ * Controller for UPC barcode scanning endpoints.
+ *
+ * All UPC endpoints require authentication. The link endpoint additionally
+ * requires admin privileges.
+ */
+@Route('upc')
+@Tags('UPC Scanning')
+@Security('bearerAuth')
+export class UpcController extends BaseController {
+  // ==========================================================================
+  // SCAN ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Scan a UPC barcode.
+   *
+   * Scans a UPC barcode either from a manually entered code or from an image.
+   * Records the scan in history and returns product information if found.
+   * If not found in our database, attempts to look up in external APIs.
+   *
+   * @summary Scan a UPC barcode
+   * @param body Scan request with UPC code or image
+   * @returns Complete scan result with product information
+   */
+  @Post('scan')
+  @SuccessResponse(200, 'Scan completed successfully')
+  @Response<ErrorResponse>(400, 'Invalid UPC code format or missing data')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async scanUpc(
+    @Body() body: ScanUpcRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<ScanResultDto>> {
+    const userProfile = req.user as UserProfile;
+    const userId = userProfile.user.user_id;
+
+    req.log.info(
+      {
+        userId,
+        scanSource: body.scan_source,
+        hasUpc: !!body.upc_code,
+        hasImage: !!body.image_base64,
+      },
+      'UPC scan request received',
+    );
+
+    // Validate that at least one input method is provided
+    if (!body.upc_code && !body.image_base64) {
+      this.setStatus(400);
+      throw new Error('Either upc_code or image_base64 must be provided.');
+    }
+
+    const result = await upcService.scanUpc(
+      userId,
+      {
+        upc_code: body.upc_code,
+        image_base64: body.image_base64,
+        scan_source: body.scan_source as UpcScanSource,
+      },
+      req.log,
+    );
+
+    req.log.info(
+      { scanId: result.scan_id, upcCode: result.upc_code, found: result.lookup_successful },
+      'UPC scan completed',
+    );
+
+    return this.success(result as unknown as ScanResultDto);
+  }
+
+  // ==========================================================================
+  // LOOKUP ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Look up a UPC code.
+   *
+   * Looks up product information for a UPC code without recording in scan history.
+   * Useful for verification or quick lookups. First checks our database, then
+   * optionally queries external APIs if not found locally.
+   *
+   * @summary Look up a UPC code
+   * @param upc_code UPC code to look up (8-14 digits)
+   * @param include_external Whether to check external APIs if not found locally (default: true)
+   * @param force_refresh Skip cache and perform fresh external lookup (default: false)
+   * @returns Lookup result with product information
+   */
+  @Get('lookup')
+  @SuccessResponse(200, 'Lookup completed successfully')
+  @Response<ErrorResponse>(400, 'Invalid UPC code format')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async lookupUpc(
+    @Request() req: ExpressRequest,
+    @Query() upc_code: string,
+    @Query() include_external?: boolean,
+    @Query() force_refresh?: boolean,
+  ): Promise<SuccessResponseType<LookupResultDto>> {
+    req.log.debug(
+      { upcCode: upc_code, forceRefresh: force_refresh },
+      'UPC lookup request received',
+    );
+
+    const result = await upcService.lookupUpc(
+      {
+        upc_code,
+        force_refresh: force_refresh ?? false,
+      },
+      req.log,
+    );
+
+    return this.success(result as unknown as LookupResultDto);
+  }
+
+  // ==========================================================================
+  // HISTORY ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get scan history.
+   *
+   * Retrieves the authenticated user's UPC scan history with optional filtering.
+   * Results are ordered by scan date (newest first).
+   *
+   * @summary Get user's scan history
+   * @param limit Maximum number of results (1-100, default: 50)
+   * @param offset Number of results to skip (default: 0)
+   * @param lookup_successful Filter by lookup success status
+   * @param scan_source Filter by scan source
+   * @param from_date Filter scans from this date (YYYY-MM-DD)
+   * @param to_date Filter scans until this date (YYYY-MM-DD)
+   * @returns Paginated scan history
+   */
+  @Get('history')
+  @SuccessResponse(200, 'Scan history retrieved successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async getScanHistory(
+    @Request() req: ExpressRequest,
+    @Query() limit?: number,
+    @Query() offset?: number,
+    @Query() lookup_successful?: boolean,
+    @Query() scan_source?: ScanSourceType,
+    @Query() from_date?: string,
+    @Query() to_date?: string,
+  ): Promise<SuccessResponseType<ScanHistoryResponseDto>> {
+    const userProfile = req.user as UserProfile;
+    const userId = userProfile.user.user_id;
+
+    // Apply defaults and bounds
+    const normalizedLimit = Math.min(100, Math.max(1, Math.floor(limit ?? 50)));
+    const normalizedOffset = Math.max(0, Math.floor(offset ?? 0));
+
+    req.log.debug(
+      { userId, limit: normalizedLimit, offset: normalizedOffset },
+      'Fetching scan history',
+    );
+
+    const result = await upcService.getScanHistory(
+      {
+        user_id: userId,
+        limit: normalizedLimit,
+        offset: normalizedOffset,
+        lookup_successful,
+        scan_source: scan_source as UpcScanSource | undefined,
+        from_date,
+        to_date,
+      },
+      req.log,
+    );
+
+    return this.success(result as unknown as ScanHistoryResponseDto);
+  }
+
+  /**
+   * Get scan by ID.
+   *
+   * Retrieves a specific scan record by its ID.
+   * Only returns scans belonging to the authenticated user.
+   *
+   * @summary Get a specific scan record
+   * @param scanId The unique identifier of the scan
+   * @returns The scan record
+   */
+  @Get('history/{scanId}')
+  @SuccessResponse(200, 'Scan record retrieved successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(404, 'Scan record not found')
+  public async getScanById(
+    @Path() scanId: number,
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<ScanHistoryRecordDto>> {
+    const userProfile = req.user as UserProfile;
+    const userId = userProfile.user.user_id;
+
+    req.log.debug({ scanId, userId }, 'Fetching scan by ID');
+
+    const scan = await upcService.getScanById(scanId, userId, req.log);
+
+    return this.success(scan as unknown as ScanHistoryRecordDto);
+  }
+
+  // ==========================================================================
+  // STATISTICS ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Get scan statistics.
+   *
+   * Returns scanning statistics for the authenticated user including
+   * total scans, success rate, and activity metrics.
+   *
+   * @summary Get user's scan statistics
+   * @returns Scan statistics
+   */
+  @Get('stats')
+  @SuccessResponse(200, 'Statistics retrieved successfully')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  public async getScanStats(
+    @Request() req: ExpressRequest,
+  ): Promise<SuccessResponseType<ScanStatsDto>> {
+    const userProfile = req.user as UserProfile;
+    const userId = userProfile.user.user_id;
+
+    req.log.debug({ userId }, 'Fetching scan statistics');
+
+    const stats = await upcService.getScanStats(userId, req.log);
+
+    return this.success(stats);
+  }
+
+  // ==========================================================================
+  // ADMIN ENDPOINTS
+  // ==========================================================================
+
+  /**
+   * Link UPC to product.
+   *
+   * Links a UPC code to an existing product in the database.
+   * This is an admin-only operation used for data management.
+   *
+   * @summary Link a UPC code to a product (admin only)
+   * @param body UPC code and product ID to link
+   */
+  @Post('link')
+  @Security('bearerAuth', ['admin'])
+  @SuccessResponse(204, 'UPC linked successfully')
+  @Response<ErrorResponse>(400, 'Invalid UPC code format')
+  @Response<ErrorResponse>(401, 'Unauthorized')
+  @Response<ErrorResponse>(403, 'Forbidden - admin access required')
+  @Response<ErrorResponse>(404, 'Product not found')
+  @Response<ErrorResponse>(409, 'UPC code already linked to another product')
+  public async linkUpcToProduct(
+    @Body() body: LinkUpcRequest,
+    @Request() req: ExpressRequest,
+  ): Promise<void> {
+    const userProfile = req.user as UserProfile;
+
+    req.log.info(
+      { userId: userProfile.user.user_id, productId: body.product_id, upcCode: body.upc_code },
+      'UPC link request received',
+    );
+
+    await upcService.linkUpcToProduct(body.product_id, body.upc_code, req.log);
+
+    req.log.info(
+      { productId: body.product_id, upcCode: body.upc_code },
+      'UPC code linked successfully',
+    );
+
+    return this.noContent();
+  }
+}