ci: Bump version to 0.14.3 [skip ci]

.env.example

@@ -128,3 +128,35 @@ GENERATE_SOURCE_MAPS=true
 SENTRY_AUTH_TOKEN=
 # URL of your Bugsink instance (for source map uploads)
 SENTRY_URL=https://bugsink.projectium.com
+
+# ===================
+# Feature Flags (ADR-024)
+# ===================
+# Feature flags control the availability of features at runtime.
+# All flags default to disabled (false) when not set or set to any value other than 'true'.
+# Set to 'true' to enable a feature.
+#
+# Backend flags use: FEATURE_SNAKE_CASE
+# Frontend flags use: VITE_FEATURE_SNAKE_CASE (VITE_ prefix required for client-side access)
+#
+# Lifecycle:
+#   1. Add flag with default false
+#   2. Enable via env var when ready for testing/rollout
+#   3. Remove conditional code when feature is fully rolled out
+#   4. Remove flag from config within 3 months of full rollout
+#
+# See: docs/adr/0024-feature-flagging-strategy.md
+
+# Backend Feature Flags
+# FEATURE_BUGSINK_SYNC=false        # Enable Bugsink error sync integration
+# FEATURE_ADVANCED_RBAC=false       # Enable advanced RBAC features
+# FEATURE_NEW_DASHBOARD=false       # Enable new dashboard experience
+# FEATURE_BETA_RECIPES=false        # Enable beta recipe features
+# FEATURE_EXPERIMENTAL_AI=false     # Enable experimental AI features
+# FEATURE_DEBUG_MODE=false          # Enable debug mode for development
+
+# Frontend Feature Flags (VITE_ prefix required)
+# VITE_FEATURE_NEW_DASHBOARD=false  # Enable new dashboard experience
+# VITE_FEATURE_BETA_RECIPES=false   # Enable beta recipe features
+# VITE_FEATURE_EXPERIMENTAL_AI=false # Enable experimental AI features
+# VITE_FEATURE_DEBUG_MODE=false     # Enable debug mode for development

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

@@ -166,8 +166,8 @@ jobs:
           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); }"
+          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']; list.forEach(p => { if ((p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') && prodProcesses.includes(p.name)) { 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); }"
 
           # --- Version Check Logic ---
           # Get the version from the newly deployed package.json

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

@@ -75,6 +75,9 @@ 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
 
@@ -490,8 +493,8 @@ jobs:
           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); }"
+          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()); list.forEach(p => { if ((p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') && p.name && p.name.endsWith('-test')) { 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); }"
 
           # 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

@@ -139,8 +139,8 @@ jobs:
           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); }"
+          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']; list.forEach(p => { if ((p.pm2_env.status === 'errored' || p.pm2_env.status === 'stopped') && prodProcesses.includes(p.name)) { 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); }"
 
           # --- Version Check Logic ---
           # Get the version from the newly deployed package.json

.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

@@ -31,47 +31,62 @@ Out-of-sync = test failures.
 
 **CRITICAL**: The `claude-win10` user has **READ-ONLY** access to production and test servers.
 
-**Claude Code does NOT have:**
+| Capability             | Status                 |
+| ---------------------- | ---------------------- |
+| Root/sudo access       | NO                     |
+| Write permissions      | NO                     |
+| PM2 restart, systemctl | NO - User must execute |
 
-- Root or sudo access
-- Write permissions on servers
-- Ability to execute PM2 restart, systemctl, or other write operations directly
+**Server Operations Workflow**: Diagnose → User executes → Analyze → Fix (1-3 commands) → User executes → Verify
 
-**Correct Workflow for Server Operations:**
+**Rules**:
 
-| Step | Actor  | Action                                                                      |
-| ---- | ------ | --------------------------------------------------------------------------- |
-| 1    | Claude | Provide **diagnostic commands** (read-only checks) for user to run          |
-| 2    | User   | Execute commands on server, report results                                  |
-| 3    | Claude | Analyze results, provide **fix commands** (1-3 at a time)                   |
-| 4    | User   | Execute fix commands, report results                                        |
-| 5    | Claude | Provide **verification commands** to confirm success and check side effects |
-| 6    | Claude | Document progress stage by stage                                            |
-| 7    | Claude | Update ALL relevant documentation when complete                             |
+- Provide diagnostic commands first, wait for user to report results
+- Maximum 3 fix commands at a time (errors may cascade)
+- Always verify after fixes complete
 
-**Example - Diagnosing PM2 Issues:**
+### PM2 Process Isolation (Production/Test Servers)
+
+**CRITICAL**: Production and test environments share the same PM2 daemon on the server.
+
+| 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
-# Step 1: Claude provides diagnostic commands (user runs these)
-pm2 list
-pm2 logs flyer-crawler-api --lines 50
-systemctl status redis
+# ✅ CORRECT - Production cleanup (filter by name)
+pm2 stop flyer-crawler-api flyer-crawler-worker flyer-crawler-analytics-worker
 
-# Step 3: After user reports results, Claude provides fix commands
-pm2 restart flyer-crawler-api
-# Wait for user confirmation before next command
+# ✅ 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);
+  }
+});
 
-# Step 5: Claude provides verification
-pm2 list
-curl -s https://flyer-crawler.projectium.com/api/health/ready | jq .
+# ❌ 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);
+}
 ```
 
-**Never Do:**
-
-- `ssh root@projectium.com "pm2 restart all"` (Claude cannot execute this)
-- Assume commands succeeded without user confirmation
-- Provide more than 3 fix commands at once (errors may cascade)
-
 ### Communication Style
 
 Ask before assuming. Never assume:
@@ -105,25 +120,27 @@ Ask before assuming. Never assume:
 
 ### Key Patterns (with file locations)
 
-| Pattern            | ADR     | Implementation                                    | File                                |
-| ------------------ | ------- | ------------------------------------------------- | ----------------------------------- |
-| Error Handling     | ADR-001 | `handleDbError()`, throw `NotFoundError`          | `src/services/db/errors.db.ts`      |
-| Repository Methods | ADR-034 | `get*` (throws), `find*` (null), `list*` (array)  | `src/services/db/*.db.ts`           |
-| API Responses      | ADR-028 | `sendSuccess()`, `sendPaginated()`, `sendError()` | `src/utils/apiResponse.ts`          |
-| Transactions       | ADR-002 | `withTransaction(async (client) => {...})`        | `src/services/db/transaction.db.ts` |
+| Pattern            | ADR     | Implementation                                    | File                                  |
+| ------------------ | ------- | ------------------------------------------------- | ------------------------------------- |
+| Error Handling     | ADR-001 | `handleDbError()`, throw `NotFoundError`          | `src/services/db/errors.db.ts`        |
+| Repository Methods | ADR-034 | `get*` (throws), `find*` (null), `list*` (array)  | `src/services/db/*.db.ts`             |
+| API Responses      | ADR-028 | `sendSuccess()`, `sendPaginated()`, `sendError()` | `src/utils/apiResponse.ts`            |
+| Transactions       | ADR-002 | `withTransaction(async (client) => {...})`        | `src/services/db/connection.db.ts`    |
+| Feature Flags      | ADR-024 | `isFeatureEnabled()`, `useFeatureFlag()`          | `src/services/featureFlags.server.ts` |
 
 ### Key Files Quick Access
 
-| Purpose           | File                             |
-| ----------------- | -------------------------------- |
-| Express app       | `server.ts`                      |
-| Environment       | `src/config/env.ts`              |
-| Routes            | `src/routes/*.routes.ts`         |
-| Repositories      | `src/services/db/*.db.ts`        |
-| Workers           | `src/services/workers.server.ts` |
-| Queues            | `src/services/queues.server.ts`  |
-| PM2 Config (Dev)  | `ecosystem.dev.config.cjs`       |
-| PM2 Config (Prod) | `ecosystem.config.cjs`           |
+| Purpose           | File                                  |
+| ----------------- | ------------------------------------- |
+| Express app       | `server.ts`                           |
+| Environment       | `src/config/env.ts`                   |
+| Routes            | `src/routes/*.routes.ts`              |
+| Repositories      | `src/services/db/*.db.ts`             |
+| Workers           | `src/services/workers.server.ts`      |
+| Queues            | `src/services/queues.server.ts`       |
+| Feature Flags     | `src/services/featureFlags.server.ts` |
+| PM2 Config (Dev)  | `ecosystem.dev.config.cjs`            |
+| PM2 Config (Prod) | `ecosystem.config.cjs`                |
 
 ---
 
@@ -166,7 +183,7 @@ The dev container now matches production by using PM2 for process management.
 - `flyer-crawler-worker-dev` - Background job worker
 - `flyer-crawler-vite-dev` - Vite frontend dev server (port 5173)
 
-### Log Aggregation (ADR-050)
+### Log Aggregation (ADR-015)
 
 All logs flow to Bugsink via Logstash with 3-project routing:
 
@@ -249,7 +266,7 @@ All logs flow to Bugsink via Logstash with 3-project routing:
 
 **Launch Pattern**:
 
-```
+```text
 Use Task tool with subagent_type: "coder", "db-dev", "tester", etc.
 ```
 
@@ -330,8 +347,8 @@ podman cp "d:/path/file" container:/tmp/file
 
 **Quick Access**:
 
-- **Dev**: https://localhost:8443 (`admin@localhost`/`admin`)
-- **Prod**: https://bugsink.projectium.com
+- **Dev**: <https://localhost:8443> (`admin@localhost`/`admin`)
+- **Prod**: <https://bugsink.projectium.com>
 
 **Token Creation** (required for MCP):
 
@@ -347,7 +364,7 @@ cd /opt/bugsink && bugsink-manage create_auth_token
 
 **See**: [docs/operations/LOGSTASH-QUICK-REF.md](docs/operations/LOGSTASH-QUICK-REF.md)
 
-Log aggregation: PostgreSQL + PM2 + Redis + NGINX → Bugsink (ADR-050)
+Log aggregation: PostgreSQL + PM2 + Redis + NGINX → Bugsink (ADR-015)
 
 ---
 
@@ -367,84 +384,3 @@ Log aggregation: PostgreSQL + PM2 + Redis + NGINX → Bugsink (ADR-050)
 | **Logstash**        | [LOGSTASH-QUICK-REF.md](docs/operations/LOGSTASH-QUICK-REF.md) |
 | **ADRs**            | [docs/adr/index.md](docs/adr/index.md)                         |
 | **All Docs**        | [docs/README.md](docs/README.md)                               |
-
----
-
-## Appendix: Integration Test Issues (Full Details)
-
-### 1. Vitest globalSetup Context Isolation
-
-Vitest's `globalSetup` runs in separate Node.js context. Singletons, spies, mocks do NOT share instances with test files.
-
-**Affected**: BullMQ worker service mocks (AI/DB failure tests)
-
-**Solutions**: Mark `.todo()`, create test-only API endpoints, use Redis-based mock flags
-
-```typescript
-// DOES NOT WORK - different instances
-const { flyerProcessingService } = await import('../../services/workers.server');
-flyerProcessingService._getAiProcessor()._setExtractAndValidateData(mockFn);
-```
-
-### 2. Cleanup Queue Deletes Before Verification
-
-Cleanup worker processes jobs in globalSetup context, ignoring test spies.
-
-**Solution**: Drain and pause queue:
-
-```typescript
-const { cleanupQueue } = await import('../../services/queues.server');
-await cleanupQueue.drain();
-await cleanupQueue.pause();
-// ... test ...
-await cleanupQueue.resume();
-```
-
-### 3. Cache Stale After Direct SQL
-
-Direct `pool.query()` inserts bypass cache invalidation.
-
-**Solution**: `await cacheService.invalidateFlyers();` after inserts
-
-### 4. Test Filename Collisions
-
-Multer predictable filenames cause race conditions.
-
-**Solution**: Use unique suffix: `${Date.now()}-${Math.round(Math.random() * 1e9)}`
-
-### 5. Response Format Mismatches
-
-API formats change: `data.jobId` vs `data.job.id`, nested vs flat, string vs number IDs.
-
-**Solution**: Log response bodies, update assertions
-
-### 6. External Service Availability
-
-PM2/Redis health checks fail when unavailable.
-
-**Solution**: try/catch with graceful degradation or mock
-
-### 7. TZ Environment Variable Breaking Async Hooks
-
-**Problem**: When `TZ=America/Los_Angeles` (or other timezone values) is set in the environment, Node.js async_hooks module can produce `RangeError: Invalid triggerAsyncId value: NaN`. This breaks React Testing Library's `render()` function which uses async hooks internally.
-
-**Root Cause**: Setting `TZ` to certain timezone values interferes with Node.js's internal async tracking mechanism, causing invalid async IDs to be generated.
-
-**Symptoms**:
-
-```text
-RangeError: Invalid triggerAsyncId value: NaN
- ❯ process.env.NODE_ENV.queueSeveralMicrotasks node_modules/react/cjs/react.development.js:751:15
- ❯ process.env.NODE_ENV.exports.act node_modules/react/cjs/react.development.js:886:11
- ❯ node_modules/@testing-library/react/dist/act-compat.js:46:25
- ❯ renderRoot node_modules/@testing-library/react/dist/pure.js:189:26
-```
-
-**Solution**: Explicitly unset `TZ` in all test scripts by adding `TZ=` (empty value) to cross-env:
-
-```json
-"test:unit": "cross-env NODE_ENV=test TZ= tsx ..."
-"test:integration": "cross-env NODE_ENV=test TZ= tsx ..."
-```
-
-**Context**: This issue was introduced in commit `d03900c` which added `TZ: 'America/Los_Angeles'` to PM2 ecosystem configs for consistent log timestamps in production/dev environments. Tests must explicitly override this to prevent the async hooks error.

docs/AI-DOCUMENTATION-INDEX.md

@@ -0,0 +1,393 @@
+# AI Documentation Index
+
+Machine-optimized navigation for AI agents. Structured for vector retrieval and semantic search.
+
+---
+
+## Quick Lookup Table
+
+| Task/Question           | Primary Doc                                         | Section/ADR                             |
+| ----------------------- | --------------------------------------------------- | --------------------------------------- |
+| Add new API endpoint    | [CODE-PATTERNS.md](development/CODE-PATTERNS.md)    | API Response Patterns, Input Validation |
+| Add repository method   | [CODE-PATTERNS.md](development/CODE-PATTERNS.md)    | Repository Patterns (get*/find*/list\*) |
+| Fix failing test        | [TESTING.md](development/TESTING.md)                | Known Integration Test Issues           |
+| Run tests correctly     | [TESTING.md](development/TESTING.md)                | Test Execution Environment              |
+| Add database column     | [DATABASE-GUIDE.md](subagents/DATABASE-GUIDE.md)    | Schema sync required                    |
+| Deploy to production    | [DEPLOYMENT.md](operations/DEPLOYMENT.md)           | Application Deployment                  |
+| Debug container issue   | [DEBUGGING.md](development/DEBUGGING.md)            | Container Issues                        |
+| Configure environment   | [ENVIRONMENT.md](getting-started/ENVIRONMENT.md)    | Configuration by Environment            |
+| Add background job      | [CODE-PATTERNS.md](development/CODE-PATTERNS.md)    | Background Jobs                         |
+| Handle errors correctly | [CODE-PATTERNS.md](development/CODE-PATTERNS.md)    | Error Handling                          |
+| Use transactions        | [CODE-PATTERNS.md](development/CODE-PATTERNS.md)    | Transaction Management                  |
+| Add authentication      | [AUTHENTICATION.md](architecture/AUTHENTICATION.md) | JWT Token Architecture                  |
+| Cache data              | [CODE-PATTERNS.md](development/CODE-PATTERNS.md)    | Caching                                 |
+| Check PM2 status        | [DEV-CONTAINER.md](development/DEV-CONTAINER.md)    | PM2 Process Management                  |
+| View logs               | [DEBUGGING.md](development/DEBUGGING.md)            | PM2 Log Access                          |
+| Understand architecture | [OVERVIEW.md](architecture/OVERVIEW.md)             | System Architecture Diagram             |
+| Check ADR for decision  | [adr/index.md](adr/index.md)                        | ADR by category                         |
+| Use subagent            | [subagents/OVERVIEW.md](subagents/OVERVIEW.md)      | Available Subagents                     |
+| API versioning          | [API-VERSIONING.md](development/API-VERSIONING.md)  | Phase 2 infrastructure                  |
+
+---
+
+## Documentation Tree
+
+```
+docs/
++-- AI-DOCUMENTATION-INDEX.md      # THIS FILE - AI navigation index
++-- README.md                      # Human-readable doc hub
+|
++-- adr/                           # Architecture Decision Records (57 ADRs)
+|   +-- index.md                   # ADR index by category
+|   +-- 0001-*.md                  # Standardized error handling
+|   +-- 0002-*.md                  # Transaction management (withTransaction)
+|   +-- 0003-*.md                  # Input validation (Zod middleware)
+|   +-- 0008-*.md                  # API versioning (/api/v1/)
+|   +-- 0014-*.md                  # Platform: Linux only (CRITICAL)
+|   +-- 0028-*.md                  # API response (sendSuccess/sendError)
+|   +-- 0034-*.md                  # Repository pattern (get*/find*/list*)
+|   +-- 0035-*.md                  # Service layer architecture
+|   +-- 0050-*.md                  # PostgreSQL observability + Logstash
+|   +-- 0057-*.md                  # Test remediation post-API versioning
+|   +-- adr-implementation-tracker.md  # Implementation status
+|
++-- architecture/
+|   +-- OVERVIEW.md                # System architecture, data flows, entities
+|   +-- DATABASE.md                # Schema design, extensions, setup
+|   +-- AUTHENTICATION.md          # OAuth, JWT, security features
+|   +-- WEBSOCKET_USAGE.md         # Real-time communication patterns
+|   +-- api-versioning-infrastructure.md  # Phase 2 versioning details
+|
++-- development/
+|   +-- CODE-PATTERNS.md           # Error handling, repos, API responses
+|   +-- TESTING.md                 # Unit/integration/E2E, known issues
+|   +-- DEBUGGING.md               # Container, DB, API, PM2 debugging
+|   +-- DEV-CONTAINER.md           # PM2, Logstash, container services
+|   +-- API-VERSIONING.md          # API versioning workflows
+|   +-- DESIGN_TOKENS.md           # Neo-Brutalism design system
+|   +-- ERROR-LOGGING-PATHS.md     # req.originalUrl pattern
+|   +-- test-path-migration.md     # Test file reorganization
+|
++-- getting-started/
+|   +-- QUICKSTART.md              # Quick setup instructions
+|   +-- INSTALL.md                 # Full installation guide
+|   +-- ENVIRONMENT.md             # Environment variables reference
+|
++-- operations/
+|   +-- DEPLOYMENT.md              # Production deployment guide
+|   +-- BARE-METAL-SETUP.md        # Server provisioning
+|   +-- MONITORING.md              # Bugsink, health checks
+|   +-- LOGSTASH-QUICK-REF.md      # Log aggregation reference
+|   +-- LOGSTASH-TROUBLESHOOTING.md  # Logstash debugging
+|
++-- subagents/
+|   +-- OVERVIEW.md                # Subagent system introduction
+|   +-- CODER-GUIDE.md             # Code development patterns
+|   +-- TESTER-GUIDE.md            # Testing strategies
+|   +-- DATABASE-GUIDE.md          # Database workflows
+|   +-- DEVOPS-GUIDE.md            # Deployment/infrastructure
+|   +-- FRONTEND-GUIDE.md          # UI/UX development
+|   +-- AI-USAGE-GUIDE.md          # Gemini integration
+|   +-- DOCUMENTATION-GUIDE.md     # Writing docs
+|   +-- SECURITY-DEBUG-GUIDE.md    # Security and debugging
+|
++-- tools/
+|   +-- MCP-CONFIGURATION.md       # MCP servers setup
+|   +-- BUGSINK-SETUP.md           # Error tracking setup
+|   +-- VSCODE-SETUP.md            # Editor configuration
+|
++-- archive/                       # Historical docs, session notes
+    +-- sessions/                  # Development session logs
+    +-- plans/                     # Feature implementation plans
+    +-- research/                  # Investigation notes
+```
+
+---
+
+## Problem-to-Document Mapping
+
+### Database Issues
+
+| Problem              | Documents                                                                                       |
+| -------------------- | ----------------------------------------------------------------------------------------------- |
+| Schema out of sync   | [DATABASE-GUIDE.md](subagents/DATABASE-GUIDE.md), [CLAUDE.md](../CLAUDE.md) schema sync section |
+| Migration needed     | [DATABASE.md](architecture/DATABASE.md), ADR-013, ADR-023                                       |
+| Query performance    | [DEBUGGING.md](development/DEBUGGING.md) Query Performance Issues                               |
+| Connection errors    | [DEBUGGING.md](development/DEBUGGING.md) Database Issues                                        |
+| Transaction patterns | [CODE-PATTERNS.md](development/CODE-PATTERNS.md) Transaction Management, ADR-002                |
+| Repository methods   | [CODE-PATTERNS.md](development/CODE-PATTERNS.md) Repository Patterns, ADR-034                   |
+
+### Test Failures
+
+| Problem                      | Documents                                                             |
+| ---------------------------- | --------------------------------------------------------------------- |
+| Tests fail in container      | [TESTING.md](development/TESTING.md), ADR-014                         |
+| Vitest globalSetup isolation | [CLAUDE.md](../CLAUDE.md) Integration Test Issues #1                  |
+| Cache stale after insert     | [CLAUDE.md](../CLAUDE.md) Integration Test Issues #3                  |
+| Queue interference           | [CLAUDE.md](../CLAUDE.md) Integration Test Issues #2                  |
+| API path mismatches          | [TESTING.md](development/TESTING.md) API Versioning in Tests, ADR-057 |
+| Type check failures          | [DEBUGGING.md](development/DEBUGGING.md) Type Check Failures          |
+| TZ environment breaks async  | [CLAUDE.md](../CLAUDE.md) Integration Test Issues #7                  |
+
+### Deployment Issues
+
+| Problem               | Documents                                                                             |
+| --------------------- | ------------------------------------------------------------------------------------- |
+| PM2 not starting      | [DEBUGGING.md](development/DEBUGGING.md) PM2 Process Issues                           |
+| NGINX configuration   | [DEPLOYMENT.md](operations/DEPLOYMENT.md) NGINX Configuration                         |
+| SSL certificates      | [DEBUGGING.md](development/DEBUGGING.md) SSL Certificate Issues                       |
+| CI/CD failures        | [DEPLOYMENT.md](operations/DEPLOYMENT.md) CI/CD Pipeline, ADR-017                     |
+| Container won't start | [DEBUGGING.md](development/DEBUGGING.md) Container Issues                             |
+| Bugsink not receiving | [BUGSINK-SETUP.md](tools/BUGSINK-SETUP.md), [MONITORING.md](operations/MONITORING.md) |
+
+### Frontend/UI Changes
+
+| Problem            | Documents                                                       |
+| ------------------ | --------------------------------------------------------------- |
+| Component patterns | [FRONTEND-GUIDE.md](subagents/FRONTEND-GUIDE.md), ADR-044       |
+| Design tokens      | [DESIGN_TOKENS.md](development/DESIGN_TOKENS.md), ADR-012       |
+| State management   | ADR-005, [OVERVIEW.md](architecture/OVERVIEW.md) Frontend Stack |
+| Hot reload broken  | [DEBUGGING.md](development/DEBUGGING.md) Frontend Issues        |
+| CORS errors        | [DEBUGGING.md](development/DEBUGGING.md) API Calls Failing      |
+
+### API Development
+
+| Problem          | Documents                                                                       |
+| ---------------- | ------------------------------------------------------------------------------- |
+| Response format  | [CODE-PATTERNS.md](development/CODE-PATTERNS.md) API Response Patterns, ADR-028 |
+| Input validation | [CODE-PATTERNS.md](development/CODE-PATTERNS.md) Input Validation, ADR-003      |
+| Error handling   | [CODE-PATTERNS.md](development/CODE-PATTERNS.md) Error Handling, ADR-001        |
+| Rate limiting    | ADR-032, [OVERVIEW.md](architecture/OVERVIEW.md)                                |
+| API versioning   | [API-VERSIONING.md](development/API-VERSIONING.md), ADR-008                     |
+| Authentication   | [AUTHENTICATION.md](architecture/AUTHENTICATION.md), ADR-048                    |
+
+### Background Jobs
+
+| Problem             | Documents                                                                 |
+| ------------------- | ------------------------------------------------------------------------- |
+| Jobs not processing | [DEBUGGING.md](development/DEBUGGING.md) Background Job Issues            |
+| Queue configuration | [CODE-PATTERNS.md](development/CODE-PATTERNS.md) Background Jobs, ADR-006 |
+| Worker crashes      | [DEBUGGING.md](development/DEBUGGING.md), ADR-053                         |
+| Scheduled jobs      | ADR-037, [OVERVIEW.md](architecture/OVERVIEW.md) Scheduled Jobs           |
+
+---
+
+## Document Priority Matrix
+
+### CRITICAL (Read First)
+
+| Document                                                        | Purpose                 | Key Content                   |
+| --------------------------------------------------------------- | ----------------------- | ----------------------------- |
+| [CLAUDE.md](../CLAUDE.md)                                       | AI agent instructions   | Rules, patterns, known issues |
+| [ADR-014](adr/0014-containerization-and-deployment-strategy.md) | Platform requirement    | Tests MUST run in container   |
+| [DEV-CONTAINER.md](development/DEV-CONTAINER.md)                | Development environment | PM2, Logstash, services       |
+
+### HIGH (Core Development)
+
+| Document                                            | Purpose           | Key Content                  |
+| --------------------------------------------------- | ----------------- | ---------------------------- |
+| [CODE-PATTERNS.md](development/CODE-PATTERNS.md)    | Code templates    | Error handling, repos, APIs  |
+| [TESTING.md](development/TESTING.md)                | Test execution    | Commands, known issues       |
+| [DATABASE.md](architecture/DATABASE.md)             | Schema reference  | Setup, extensions, users     |
+| [ADR-034](adr/0034-repository-pattern-standards.md) | Repository naming | get*/find*/list\*            |
+| [ADR-028](adr/0028-api-response-standardization.md) | API responses     | sendSuccess/sendError        |
+| [ADR-001](adr/0001-standardized-error-handling.md)  | Error handling    | handleDbError, NotFoundError |
+
+### MEDIUM (Specialized Tasks)
+
+| Document                                            | Purpose               | Key Content              |
+| --------------------------------------------------- | --------------------- | ------------------------ |
+| [subagents/OVERVIEW.md](subagents/OVERVIEW.md)      | Subagent selection    | When to delegate         |
+| [DEPLOYMENT.md](operations/DEPLOYMENT.md)           | Production deployment | PM2, NGINX, CI/CD        |
+| [DEBUGGING.md](development/DEBUGGING.md)            | Troubleshooting       | Common issues, solutions |
+| [ENVIRONMENT.md](getting-started/ENVIRONMENT.md)    | Config reference      | Variables by environment |
+| [AUTHENTICATION.md](architecture/AUTHENTICATION.md) | Auth patterns         | OAuth, JWT, security     |
+| [API-VERSIONING.md](development/API-VERSIONING.md)  | Versioning            | /api/v1/ prefix          |
+
+### LOW (Reference/Historical)
+
+| Document             | Purpose            | Key Content               |
+| -------------------- | ------------------ | ------------------------- |
+| [archive/](archive/) | Historical docs    | Session notes, old plans  |
+| ADR-013, ADR-023     | Migration strategy | Proposed, not implemented |
+| ADR-024              | Feature flags      | Proposed                  |
+| ADR-025              | i18n/l10n          | Proposed                  |
+
+---
+
+## Cross-Reference Matrix
+
+| Document             | References                                                                      | Referenced By                                          |
+| -------------------- | ------------------------------------------------------------------------------- | ------------------------------------------------------ |
+| **CLAUDE.md**        | ADR-001, ADR-002, ADR-008, ADR-014, ADR-028, ADR-034, ADR-035, ADR-050, ADR-057 | All development docs                                   |
+| **ADR-008**          | ADR-028                                                                         | API-VERSIONING.md, TESTING.md, ADR-057                 |
+| **ADR-014**          | -                                                                               | CLAUDE.md, TESTING.md, DEPLOYMENT.md, DEV-CONTAINER.md |
+| **ADR-028**          | ADR-001                                                                         | CODE-PATTERNS.md, OVERVIEW.md                          |
+| **ADR-034**          | ADR-001                                                                         | CODE-PATTERNS.md, DATABASE-GUIDE.md                    |
+| **ADR-057**          | ADR-008, ADR-028                                                                | TESTING.md                                             |
+| **CODE-PATTERNS.md** | ADR-001, ADR-002, ADR-003, ADR-028, ADR-034, ADR-036, ADR-048                   | CODER-GUIDE.md                                         |
+| **TESTING.md**       | ADR-014, ADR-057, CLAUDE.md                                                     | TESTER-GUIDE.md, DEBUGGING.md                          |
+| **DEBUGGING.md**     | DEV-CONTAINER.md, TESTING.md, MONITORING.md                                     | DEVOPS-GUIDE.md                                        |
+| **DEV-CONTAINER.md** | ADR-014, ADR-050, ecosystem.dev.config.cjs                                      | DEBUGGING.md, CLAUDE.md                                |
+| **OVERVIEW.md**      | ADR-001 through ADR-050+                                                        | All architecture docs                                  |
+| **DATABASE.md**      | ADR-002, ADR-013, ADR-055                                                       | DATABASE-GUIDE.md                                      |
+
+---
+
+## Navigation Patterns
+
+### Adding a Feature
+
+```
+1. CLAUDE.md              -> Project rules, patterns
+2. CODE-PATTERNS.md       -> Implementation templates
+3. Relevant subagent guide -> Domain-specific patterns
+4. Related ADRs           -> Design decisions
+5. TESTING.md             -> Test requirements
+```
+
+### Fixing a Bug
+
+```
+1. DEBUGGING.md           -> Common issues checklist
+2. TESTING.md             -> Run tests in container
+3. Error logs (pm2/bugsink) -> Identify root cause
+4. CODE-PATTERNS.md       -> Correct pattern reference
+5. Related ADR            -> Architectural context
+```
+
+### Deploying
+
+```
+1. DEPLOYMENT.md          -> Deployment procedures
+2. ENVIRONMENT.md         -> Required variables
+3. MONITORING.md          -> Health check verification
+4. LOGSTASH-QUICK-REF.md  -> Log aggregation check
+```
+
+### Database Changes
+
+```
+1. DATABASE-GUIDE.md      -> Schema sync requirements (CRITICAL)
+2. DATABASE.md            -> Schema design patterns
+3. ADR-002                -> Transaction patterns
+4. ADR-034                -> Repository methods
+5. ADR-055                -> Normalization rules
+```
+
+### Subagent Selection
+
+| Task Type             | Subagent                  | Guide                                                        |
+| --------------------- | ------------------------- | ------------------------------------------------------------ |
+| Write production code | `coder`                   | [CODER-GUIDE.md](subagents/CODER-GUIDE.md)                   |
+| Database changes      | `db-dev`                  | [DATABASE-GUIDE.md](subagents/DATABASE-GUIDE.md)             |
+| Create tests          | `testwriter`              | [TESTER-GUIDE.md](subagents/TESTER-GUIDE.md)                 |
+| Fix failing tests     | `tester`                  | [TESTER-GUIDE.md](subagents/TESTER-GUIDE.md)                 |
+| Container/deployment  | `devops`                  | [DEVOPS-GUIDE.md](subagents/DEVOPS-GUIDE.md)                 |
+| UI components         | `frontend-specialist`     | [FRONTEND-GUIDE.md](subagents/FRONTEND-GUIDE.md)             |
+| External APIs         | `integrations-specialist` | -                                                            |
+| Security review       | `security-engineer`       | [SECURITY-DEBUG-GUIDE.md](subagents/SECURITY-DEBUG-GUIDE.md) |
+| Production errors     | `log-debug`               | [SECURITY-DEBUG-GUIDE.md](subagents/SECURITY-DEBUG-GUIDE.md) |
+| AI/Gemini issues      | `ai-usage`                | [AI-USAGE-GUIDE.md](subagents/AI-USAGE-GUIDE.md)             |
+
+---
+
+## Key File Quick Reference
+
+### Configuration
+
+| File                       | Purpose                      |
+| -------------------------- | ---------------------------- |
+| `server.ts`                | Express app setup            |
+| `src/config/env.ts`        | Environment validation (Zod) |
+| `ecosystem.dev.config.cjs` | PM2 dev config               |
+| `ecosystem.config.cjs`     | PM2 prod config              |
+| `vite.config.ts`           | Vite build config            |
+
+### Core Implementation
+
+| File                                | Purpose                             |
+| ----------------------------------- | ----------------------------------- |
+| `src/routes/*.routes.ts`            | API route handlers                  |
+| `src/services/db/*.db.ts`           | Repository layer                    |
+| `src/services/*.server.ts`          | Server-only services                |
+| `src/services/queues.server.ts`     | BullMQ queue definitions            |
+| `src/services/workers.server.ts`    | BullMQ workers                      |
+| `src/utils/apiResponse.ts`          | sendSuccess/sendError/sendPaginated |
+| `src/services/db/errors.db.ts`      | handleDbError, NotFoundError        |
+| `src/services/db/transaction.db.ts` | withTransaction                     |
+
+### Database Schema
+
+| File                           | Purpose                             |
+| ------------------------------ | ----------------------------------- |
+| `sql/master_schema_rollup.sql` | Test DB, complete reference         |
+| `sql/initial_schema.sql`       | Fresh install (identical to rollup) |
+| `sql/migrations/*.sql`         | Production ALTER statements         |
+
+### Testing
+
+| File                               | Purpose                 |
+| ---------------------------------- | ----------------------- |
+| `vitest.config.ts`                 | Unit test config        |
+| `vitest.config.integration.ts`     | Integration test config |
+| `vitest.config.e2e.ts`             | E2E test config         |
+| `src/tests/utils/mockFactories.ts` | Mock data factories     |
+| `src/tests/utils/storeHelpers.ts`  | Store test helpers      |
+
+---
+
+## ADR Quick Reference
+
+### By Implementation Status
+
+**Implemented**: 001, 002, 003, 004, 006, 008, 009, 010, 016, 017, 020, 021, 028, 032, 033, 034, 035, 036, 037, 038, 040, 041, 043, 044, 045, 046, 050, 051, 052, 055, 057
+
+**Partially Implemented**: 012, 014, 015, 048
+
+**Proposed**: 011, 013, 022, 023, 024, 025, 029, 030, 031, 039, 047, 053, 054, 056
+
+### By Category
+
+| Category              | ADRs                                        |
+| --------------------- | ------------------------------------------- |
+| Core Infrastructure   | 002, 007, 020, 030                          |
+| Data Management       | 009, 013, 019, 023, 031, 055                |
+| API & Integration     | 003, 008, 018, 022, 028                     |
+| Security              | 001, 011, 016, 029, 032, 033, 048           |
+| Observability         | 004, 015, 050, 051, 052, 056                |
+| Deployment & Ops      | 006, 014, 017, 024, 037, 038, 053, 054      |
+| Frontend/UI           | 005, 012, 025, 026, 044                     |
+| Dev Workflow          | 010, 021, 027, 040, 045, 047, 057           |
+| Architecture Patterns | 034, 035, 036, 039, 041, 042, 043, 046, 049 |
+
+---
+
+## Essential Commands
+
+```bash
+# Run all tests (MUST use container)
+podman exec -it flyer-crawler-dev npm test
+
+# Run unit tests
+podman exec -it flyer-crawler-dev npm run test:unit
+
+# Run type check
+podman exec -it flyer-crawler-dev npm run type-check
+
+# Run integration tests
+podman exec -it flyer-crawler-dev npm run test:integration
+
+# PM2 status
+podman exec -it flyer-crawler-dev pm2 status
+
+# PM2 logs
+podman exec -it flyer-crawler-dev pm2 logs
+
+# Restart all processes
+podman exec -it flyer-crawler-dev pm2 restart all
+```
+
+---
+
+_This index is optimized for AI agent consumption. Updated: 2026-01-28_

docs/adr/0008-api-versioning-strategy.md

@@ -316,6 +316,7 @@ app.use('/api/v1', (req, res, next) => {
 - [ADR-018](./0018-api-documentation-strategy.md) - API Documentation Strategy (versioned OpenAPI specs)
 - [ADR-028](./0028-api-response-standardization.md) - Response Standardization (envelope pattern applies to all versions)
 - [ADR-016](./0016-api-security-hardening.md) - Security Hardening (applies to all versions)
+- [ADR-057](./0057-test-remediation-post-api-versioning.md) - Test Remediation Post-API Versioning (documents test migration)
 
 ## Implementation Checklist
 

docs/adr/0010-testing-strategy-and-standards.md

@@ -363,6 +363,13 @@ The following files contain acknowledged code smell violations that are deferred
 - `src/tests/utils/mockFactories.ts` - Mock factories (1553 lines)
 - `src/tests/utils/testHelpers.ts` - Test utilities
 
+## Related ADRs
+
+- [ADR-014](./0014-containerization-and-deployment-strategy.md) - Containerization (tests must run in dev container)
+- [ADR-040](./0040-testing-economics-and-priorities.md) - Testing Economics and Priorities
+- [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
+
 ## Future Enhancements
 
 1. **Browser E2E Tests**: Consider adding Playwright for actual browser testing

docs/adr/0013-database-schema-migration-strategy.md

@@ -2,7 +2,9 @@
 
 **Date**: 2025-12-12
 
-**Status**: Proposed
+**Status**: Superseded by [ADR-023](./0023-database-schema-migration-strategy.md)
+
+**Note**: This ADR was an early draft. ADR-023 provides a more detailed specification for the same topic.
 
 ## Context
 

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/0023-database-schema-migration-strategy.md

@@ -4,6 +4,8 @@
 
 **Status**: Proposed
 
+**Supersedes**: [ADR-013](./0013-database-schema-migration-strategy.md)
+
 ## Context
 
 The `README.md` indicates that the database schema is managed by manually running a large `schema.sql.txt` file. This approach is highly error-prone, makes tracking changes difficult, and is not feasible for updating a live production database without downtime or data loss.

docs/adr/0024-feature-flagging-strategy.md

@@ -1,18 +1,333 @@
 # ADR-024: Feature Flagging Strategy
 
 **Date**: 2025-12-12
+**Status**: Accepted
+**Implemented**: 2026-01-28
+**Implementation Plan**: [2026-01-28-adr-024-feature-flags-implementation.md](../plans/2026-01-28-adr-024-feature-flags-implementation.md)
 
-**Status**: Proposed
+## Implementation Summary
+
+Feature flag infrastructure fully implemented with 89 new tests (all passing). Total test suite: 3,616 tests passing.
+
+**Backend**:
+
+- Zod-validated schema in `src/config/env.ts` with 6 feature flags
+- Service module `src/services/featureFlags.server.ts` with `isFeatureEnabled()`, `getFeatureFlags()`, `getEnabledFeatureFlags()`
+- Admin endpoint `GET /api/v1/admin/feature-flags` (requires admin authentication)
+- Convenience exports for direct boolean access
+
+**Frontend**:
+
+- Config section in `src/config.ts` with `VITE_FEATURE_*` environment variables
+- Type declarations in `src/vite-env.d.ts`
+- React hook `useFeatureFlag()` and `useAllFeatureFlags()` in `src/hooks/useFeatureFlag.ts`
+- Declarative component `<FeatureFlag>` in `src/components/FeatureFlag.tsx`
+
+**Current Flags**: `bugsinkSync`, `advancedRbac`, `newDashboard`, `betaRecipes`, `experimentalAi`, `debugMode`
+
+---
 
 ## Context
 
-As the application grows, there is no way to roll out new features to a subset of users (e.g., for beta testing) or to quickly disable a problematic feature in production without a full redeployment.
+Application lacks controlled feature rollout capability. No mechanism for beta testing, quick production disablement, or gradual rollouts without full redeployment. Need type-safe, configuration-based system integrating with ADR-007 Zod validation.
 
 ## Decision
 
-We will implement a feature flagging system. This could start with a simple configuration-based approach (defined in `ADR-007`) and evolve to use a dedicated service like **Flagsmith** or **LaunchDarkly**. This ADR will define how feature flags are created, managed, and checked in both the backend and frontend code.
+Implement environment-variable-based feature flag system. Backend: Zod-validated schema in `src/config/env.ts` + dedicated service. Frontend: Vite env vars + React hook + declarative component. All flags default `false` (opt-in model). Future migration path to Flagsmith/LaunchDarkly preserved via abstraction layer.
 
 ## Consequences
 
-**Positive**: Decouples feature releases from code deployments, reducing risk and allowing for more controlled, gradual rollouts and A/B testing. Enables easier experimentation and faster iteration.
-**Negative**: Adds complexity to the codebase with conditional logic around features. Requires careful management of feature flag states to avoid technical debt.
+- **Positive**: Decouples releases from deployments → reduced risk, gradual rollouts, A/B testing capability
+- **Negative**: Conditional logic complexity → requires sunset policy (3-month max after full rollout)
+- **Neutral**: Restart required for flag changes (acceptable for current scale, external service removes this constraint)
+
+---
+
+## Implementation Details
+
+### Architecture Overview
+
+```text
+Environment Variables (FEATURE_*, VITE_FEATURE_*)
+        │
+        ├── Backend ──► src/config/env.ts (Zod) ──► src/services/featureFlags.server.ts
+        │                                                     │
+        │                                          ┌──────────┴──────────┐
+        │                                          │                     │
+        │                              isFeatureEnabled()    getAllFeatureFlags()
+        │                                          │
+        │                                   Routes/Services
+        │
+        └── Frontend ─► src/config.ts ──► src/hooks/useFeatureFlag.ts
+                                                   │
+                                    ┌──────────────┼──────────────┐
+                                    │              │              │
+                            useFeatureFlag()  useAllFeatureFlags()  <FeatureFlag>
+                                    │                             Component
+                                Components
+```
+
+### File Structure
+
+| File                                  | Purpose                  | Layer            |
+| ------------------------------------- | ------------------------ | ---------------- |
+| `src/config/env.ts`                   | Zod schema + env loading | Backend config   |
+| `src/services/featureFlags.server.ts` | Flag access service      | Backend runtime  |
+| `src/config.ts`                       | Vite env parsing         | Frontend config  |
+| `src/vite-env.d.ts`                   | TypeScript declarations  | Frontend types   |
+| `src/hooks/useFeatureFlag.ts`         | React hook               | Frontend runtime |
+| `src/components/FeatureFlag.tsx`      | Declarative wrapper      | Frontend UI      |
+
+### Naming Convention
+
+| Context             | Pattern                   | Example                            |
+| ------------------- | ------------------------- | ---------------------------------- |
+| Backend env var     | `FEATURE_SNAKE_CASE`      | `FEATURE_NEW_DASHBOARD`            |
+| Frontend env var    | `VITE_FEATURE_SNAKE_CASE` | `VITE_FEATURE_NEW_DASHBOARD`       |
+| Config property     | `camelCase`               | `config.featureFlags.newDashboard` |
+| Hook/function param | `camelCase` literal       | `isFeatureEnabled('newDashboard')` |
+
+### Backend Implementation
+
+#### Schema Definition (`src/config/env.ts`)
+
+```typescript
+/**
+ * Feature flags schema (ADR-024).
+ * All flags default false (disabled) for safety.
+ */
+const featureFlagsSchema = z.object({
+  newDashboard: booleanString(false),      // FEATURE_NEW_DASHBOARD
+  betaRecipes: booleanString(false),       // FEATURE_BETA_RECIPES
+  experimentalAi: booleanString(false),    // FEATURE_EXPERIMENTAL_AI
+  debugMode: booleanString(false),         // FEATURE_DEBUG_MODE
+});
+
+// In loadEnvVars():
+featureFlags: {
+  newDashboard: process.env.FEATURE_NEW_DASHBOARD,
+  betaRecipes: process.env.FEATURE_BETA_RECIPES,
+  experimentalAi: process.env.FEATURE_EXPERIMENTAL_AI,
+  debugMode: process.env.FEATURE_DEBUG_MODE,
+},
+```
+
+#### Service Module (`src/services/featureFlags.server.ts`)
+
+```typescript
+import { config, isDevelopment } from '../config/env';
+import { logger } from './logger.server';
+
+export type FeatureFlagName = keyof typeof config.featureFlags;
+
+/**
+ * Check feature flag state. Logs in development mode.
+ */
+export function isFeatureEnabled(flagName: FeatureFlagName): boolean {
+  const enabled = config.featureFlags[flagName];
+  if (isDevelopment) {
+    logger.debug({ flag: flagName, enabled }, 'Feature flag checked');
+  }
+  return enabled;
+}
+
+/**
+ * Get all flags (admin/debug endpoints).
+ */
+export function getAllFeatureFlags(): Record<FeatureFlagName, boolean> {
+  return { ...config.featureFlags };
+}
+
+// Convenience exports (evaluated once at startup)
+export const isNewDashboardEnabled = config.featureFlags.newDashboard;
+export const isBetaRecipesEnabled = config.featureFlags.betaRecipes;
+```
+
+#### Usage in Routes
+
+```typescript
+import { isFeatureEnabled } from '../services/featureFlags.server';
+
+router.get('/dashboard', async (req, res) => {
+  if (isFeatureEnabled('newDashboard')) {
+    return sendSuccess(res, { version: 'v2', data: await getNewDashboardData() });
+  }
+  return sendSuccess(res, { version: 'v1', data: await getLegacyDashboardData() });
+});
+```
+
+### Frontend Implementation
+
+#### Config (`src/config.ts`)
+
+```typescript
+const config = {
+  // ... existing sections ...
+
+  featureFlags: {
+    newDashboard: import.meta.env.VITE_FEATURE_NEW_DASHBOARD === 'true',
+    betaRecipes: import.meta.env.VITE_FEATURE_BETA_RECIPES === 'true',
+    experimentalAi: import.meta.env.VITE_FEATURE_EXPERIMENTAL_AI === 'true',
+    debugMode: import.meta.env.VITE_FEATURE_DEBUG_MODE === 'true',
+  },
+};
+```
+
+#### Type Declarations (`src/vite-env.d.ts`)
+
+```typescript
+interface ImportMetaEnv {
+  readonly VITE_FEATURE_NEW_DASHBOARD?: string;
+  readonly VITE_FEATURE_BETA_RECIPES?: string;
+  readonly VITE_FEATURE_EXPERIMENTAL_AI?: string;
+  readonly VITE_FEATURE_DEBUG_MODE?: string;
+}
+```
+
+#### React Hook (`src/hooks/useFeatureFlag.ts`)
+
+```typescript
+import { useMemo } from 'react';
+import config from '../config';
+
+export type FeatureFlagName = keyof typeof config.featureFlags;
+
+export function useFeatureFlag(flagName: FeatureFlagName): boolean {
+  return useMemo(() => config.featureFlags[flagName], [flagName]);
+}
+
+export function useAllFeatureFlags(): Record<FeatureFlagName, boolean> {
+  return useMemo(() => ({ ...config.featureFlags }), []);
+}
+```
+
+#### Declarative Component (`src/components/FeatureFlag.tsx`)
+
+```typescript
+import { ReactNode } from 'react';
+import { useFeatureFlag, FeatureFlagName } from '../hooks/useFeatureFlag';
+
+interface FeatureFlagProps {
+  name: FeatureFlagName;
+  children: ReactNode;
+  fallback?: ReactNode;
+}
+
+export function FeatureFlag({ name, children, fallback = null }: FeatureFlagProps) {
+  const isEnabled = useFeatureFlag(name);
+  return <>{isEnabled ? children : fallback}</>;
+}
+```
+
+#### Usage in Components
+
+```tsx
+// Declarative approach
+<FeatureFlag name="newDashboard" fallback={<LegacyDashboard />}>
+  <NewDashboard />
+</FeatureFlag>;
+
+// Hook approach (for logic beyond rendering)
+const isNewDashboard = useFeatureFlag('newDashboard');
+useEffect(() => {
+  if (isNewDashboard) analytics.track('new_dashboard_viewed');
+}, [isNewDashboard]);
+```
+
+### Testing Patterns
+
+#### Backend Test Setup
+
+```typescript
+// Reset modules to test different flag states
+beforeEach(() => {
+  vi.resetModules();
+  process.env.FEATURE_NEW_DASHBOARD = 'true';
+});
+
+// src/services/featureFlags.server.test.ts
+describe('isFeatureEnabled', () => {
+  it('returns false for disabled flags', () => {
+    expect(isFeatureEnabled('newDashboard')).toBe(false);
+  });
+});
+```
+
+#### Frontend Test Setup
+
+```typescript
+// Mock config module
+vi.mock('../config', () => ({
+  default: {
+    featureFlags: {
+      newDashboard: true,
+      betaRecipes: false,
+    },
+  },
+}));
+
+// Component test
+describe('FeatureFlag', () => {
+  it('renders fallback when disabled', () => {
+    render(
+      <FeatureFlag name="betaRecipes" fallback={<div>Old</div>}>
+        <div>New</div>
+      </FeatureFlag>
+    );
+    expect(screen.getByText('Old')).toBeInTheDocument();
+  });
+});
+```
+
+### Flag Lifecycle
+
+| Phase      | Actions                                                                                      |
+| ---------- | -------------------------------------------------------------------------------------------- |
+| **Add**    | 1. Add to both schemas (backend + frontend) 2. Default `false` 3. Document in `.env.example` |
+| **Enable** | Set env var `='true'` → restart application                                                  |
+| **Remove** | 1. Remove conditional code 2. Remove from schemas 3. Remove env vars                         |
+| **Sunset** | Max 3 months after full rollout → remove flag                                                |
+
+### Admin Endpoint (Optional)
+
+```typescript
+// GET /api/v1/admin/feature-flags (admin-only)
+router.get('/feature-flags', requireAdmin, async (req, res) => {
+  sendSuccess(res, { flags: getAllFeatureFlags() });
+});
+```
+
+### Integration with ADR-007
+
+Feature flags extend existing Zod configuration pattern:
+
+- **Validation**: Same `booleanString()` transform used by other config
+- **Loading**: Same `loadEnvVars()` function loads `FEATURE_*` vars
+- **Type Safety**: `FeatureFlagName` type derived from config schema
+- **Fail-Fast**: Invalid flag values fail at startup (Zod validation)
+
+### Future Migration Path
+
+Current implementation abstracts flag access via `isFeatureEnabled()` function and `useFeatureFlag()` hook. External service migration requires:
+
+1. Replace implementation internals of these functions
+2. Add API client for Flagsmith/LaunchDarkly
+3. No changes to consuming code (routes/components)
+
+### Explicitly Out of Scope
+
+- External service integration (Flagsmith/LaunchDarkly)
+- Database-stored flags
+- Real-time flag updates (WebSocket/SSE)
+- User-specific flags (A/B testing percentages)
+- Flag inheritance/hierarchy
+- Flag audit logging
+
+### Key Files Reference
+
+| Action                | Files                                                                                             |
+| --------------------- | ------------------------------------------------------------------------------------------------- |
+| Add new flag          | `src/config/env.ts`, `src/config.ts`, `src/vite-env.d.ts`, `.env.example`                         |
+| Check flag (backend)  | Import from `src/services/featureFlags.server.ts`                                                 |
+| Check flag (frontend) | Import hook from `src/hooks/useFeatureFlag.ts` or component from `src/components/FeatureFlag.tsx` |
+| Test flag behavior    | Mock via `vi.resetModules()` (backend) or `vi.mock('../config')` (frontend)                       |

docs/adr/0040-testing-economics-and-priorities.md

@@ -195,6 +195,12 @@ Do NOT add tests:
 - Coverage percentages may not satisfy external audits
 - Requires judgment calls that may be inconsistent
 
+## Related ADRs
+
+- [ADR-010](./0010-testing-strategy-and-standards.md) - Testing Strategy and Standards (this ADR extends ADR-010)
+- [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
+
 ## Key Files
 
 - `docs/adr/0010-testing-strategy-and-standards.md` - Testing mechanics

docs/adr/0050-postgresql-function-observability.md

@@ -4,7 +4,7 @@
 
 **Status**: Accepted (Fully Implemented)
 
-**Related**: [ADR-015](0015-application-performance-monitoring-and-error-tracking.md), [ADR-004](0004-standardized-application-wide-structured-logging.md)
+**Related**: [ADR-015](0015-error-tracking-and-observability.md), [ADR-004](0004-standardized-application-wide-structured-logging.md)
 
 ## Context
 
@@ -335,7 +335,7 @@ SELECT award_achievement('user-uuid', 'Nonexistent Badge');
 
 ## References
 
-- [ADR-015: Application Performance Monitoring](0015-application-performance-monitoring-and-error-tracking.md)
+- [ADR-015: Error Tracking and Observability](0015-error-tracking-and-observability.md)
 - [ADR-004: Standardized Structured Logging](0004-standardized-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/0054-bugsink-gitea-issue-sync.md

@@ -332,6 +332,6 @@ Response:
 ## References
 
 - [ADR-006: Background Job Processing](./0006-background-job-processing-and-task-queues.md)
-- [ADR-015: Application Performance Monitoring](./0015-application-performance-monitoring-and-error-tracking.md)
+- [ADR-015: Error Tracking and Observability](./0015-error-tracking-and-observability.md)
 - [Bugsink API Documentation](https://bugsink.com/docs/api/)
 - [Gitea API Documentation](https://docs.gitea.io/en-us/api-usage/)

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/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

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+# 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

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+# 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/adr-implementation-tracker.md

@@ -15,9 +15,10 @@ This document tracks the implementation status and estimated effort for all Arch
 
 | Status                       | Count |
 | ---------------------------- | ----- |
-| Accepted (Fully Implemented) | 40    |
+| Accepted (Fully Implemented) | 42    |
 | Partially Implemented        | 2     |
-| Proposed (Not Started)       | 14    |
+| Proposed (Not Started)       | 12    |
+| Superseded                   | 1     |
 
 ---
 
@@ -34,13 +35,13 @@ This document tracks the implementation status and estimated effort for all Arch
 
 ### Category 2: Data Management
 
-| ADR                                                             | Title                    | Status   | Effort | Notes                          |
-| --------------------------------------------------------------- | ------------------------ | -------- | ------ | ------------------------------ |
-| [ADR-009](./0009-caching-strategy-for-read-heavy-operations.md) | Caching Strategy         | Accepted | -      | Fully implemented              |
-| [ADR-013](./0013-database-schema-migration-strategy.md)         | Schema Migrations v1     | Proposed | M      | Superseded by ADR-023          |
-| [ADR-019](./0019-data-backup-and-recovery-strategy.md)          | Backup & Recovery        | Accepted | -      | Fully implemented              |
-| [ADR-023](./0023-database-schema-migration-strategy.md)         | Schema Migrations v2     | Proposed | L      | Requires tooling setup         |
-| [ADR-031](./0031-data-retention-and-privacy-compliance.md)      | Data Retention & Privacy | Proposed | XL     | Legal/compliance review needed |
+| ADR                                                             | Title                    | Status     | Effort | Notes                          |
+| --------------------------------------------------------------- | ------------------------ | ---------- | ------ | ------------------------------ |
+| [ADR-009](./0009-caching-strategy-for-read-heavy-operations.md) | Caching Strategy         | Accepted   | -      | Fully implemented              |
+| [ADR-013](./0013-database-schema-migration-strategy.md)         | Schema Migrations v1     | Superseded | -      | Superseded by ADR-023          |
+| [ADR-019](./0019-data-backup-and-recovery-strategy.md)          | Backup & Recovery        | Accepted   | -      | Fully implemented              |
+| [ADR-023](./0023-database-schema-migration-strategy.md)         | Schema Migrations v2     | Proposed   | L      | Requires tooling setup         |
+| [ADR-031](./0031-data-retention-and-privacy-compliance.md)      | Data Retention & Privacy | Proposed   | XL     | Legal/compliance review needed |
 
 ### Category 3: API & Integration
 
@@ -77,16 +78,16 @@ This document tracks the implementation status and estimated effort for all Arch
 
 ### Category 6: Deployment & Operations
 
-| ADR                                                            | Title              | Status   | Effort | Notes                      |
-| -------------------------------------------------------------- | ------------------ | -------- | ------ | -------------------------- |
-| [ADR-006](./0006-background-job-processing-and-task-queues.md) | Background Jobs    | Accepted | -      | Fully implemented          |
-| [ADR-014](./0014-containerization-and-deployment-strategy.md)  | Containerization   | Partial  | M      | Docker done, K8s pending   |
-| [ADR-017](./0017-ci-cd-and-branching-strategy.md)              | CI/CD & Branching  | Accepted | -      | Fully implemented          |
-| [ADR-024](./0024-feature-flagging-strategy.md)                 | Feature Flags      | Proposed | M      | New service/library needed |
-| [ADR-037](./0037-scheduled-jobs-and-cron-pattern.md)           | Scheduled Jobs     | Accepted | -      | Fully implemented          |
-| [ADR-038](./0038-graceful-shutdown-pattern.md)                 | Graceful Shutdown  | Accepted | -      | Fully implemented          |
-| [ADR-053](./0053-worker-health-checks.md)                      | Worker Health      | Accepted | -      | Fully implemented          |
-| [ADR-054](./0054-bugsink-gitea-issue-sync.md)                  | Bugsink-Gitea Sync | Proposed | L      | Automated issue creation   |
+| ADR                                                            | Title              | Status   | Effort | Notes                    |
+| -------------------------------------------------------------- | ------------------ | -------- | ------ | ------------------------ |
+| [ADR-006](./0006-background-job-processing-and-task-queues.md) | Background Jobs    | Accepted | -      | Fully implemented        |
+| [ADR-014](./0014-containerization-and-deployment-strategy.md)  | Containerization   | Partial  | M      | Docker done, K8s pending |
+| [ADR-017](./0017-ci-cd-and-branching-strategy.md)              | CI/CD & Branching  | Accepted | -      | Fully implemented        |
+| [ADR-024](./0024-feature-flagging-strategy.md)                 | Feature Flags      | Accepted | -      | Fully implemented        |
+| [ADR-037](./0037-scheduled-jobs-and-cron-pattern.md)           | Scheduled Jobs     | Accepted | -      | Fully implemented        |
+| [ADR-038](./0038-graceful-shutdown-pattern.md)                 | Graceful Shutdown  | Accepted | -      | Fully implemented        |
+| [ADR-053](./0053-worker-health-checks.md)                      | Worker Health      | Accepted | -      | Fully implemented        |
+| [ADR-054](./0054-bugsink-gitea-issue-sync.md)                  | Bugsink-Gitea Sync | Proposed | L      | Automated issue creation |
 
 ### Category 7: Frontend / User Interface
 
@@ -108,6 +109,7 @@ This document tracks the implementation status and estimated effort for all Arch
 | [ADR-040](./0040-testing-economics-and-priorities.md)                         | Testing Economics    | Accepted | -      | Fully implemented    |
 | [ADR-045](./0045-test-data-factories-and-fixtures.md)                         | Test Data Factories  | Accepted | -      | Fully implemented    |
 | [ADR-047](./0047-project-file-and-folder-organization.md)                     | Project Organization | Proposed | XL     | Major reorganization |
+| [ADR-057](./0057-test-remediation-post-api-versioning.md)                     | Test Remediation     | Accepted | -      | Fully implemented    |
 
 ### Category 9: Architecture Patterns
 
@@ -132,15 +134,14 @@ These ADRs are proposed or partially implemented, ordered by suggested implement
 
 | Priority | ADR     | Title                    | Status   | Effort | Rationale                            |
 | -------- | ------- | ------------------------ | -------- | ------ | ------------------------------------ |
-| 1        | ADR-024 | Feature Flags            | Proposed | M      | Safer deployments, A/B testing       |
-| 2        | ADR-054 | Bugsink-Gitea Sync       | Proposed | L      | Automated issue tracking from errors |
-| 3        | ADR-023 | Schema Migrations v2     | Proposed | L      | Database evolution support           |
-| 4        | ADR-029 | Secret Rotation          | Proposed | L      | Security improvement                 |
-| 5        | ADR-030 | Circuit Breaker          | Proposed | L      | Resilience improvement               |
-| 6        | ADR-056 | APM (Performance)        | Proposed | M      | Enable when performance issues arise |
-| 7        | ADR-011 | Authorization & RBAC     | Proposed | XL     | Advanced permission system           |
-| 8        | ADR-025 | i18n & l10n              | Proposed | XL     | Multi-language support               |
-| 9        | ADR-031 | Data Retention & Privacy | Proposed | XL     | Compliance requirements              |
+| 1        | ADR-054 | Bugsink-Gitea Sync       | Proposed | L      | Automated issue tracking from errors |
+| 2        | ADR-023 | Schema Migrations v2     | Proposed | L      | Database evolution support           |
+| 3        | ADR-029 | Secret Rotation          | Proposed | L      | Security improvement                 |
+| 4        | ADR-030 | Circuit Breaker          | Proposed | L      | Resilience improvement               |
+| 5        | ADR-056 | APM (Performance)        | Proposed | M      | Enable when performance issues arise |
+| 6        | ADR-011 | Authorization & RBAC     | Proposed | XL     | Advanced permission system           |
+| 7        | ADR-025 | i18n & l10n              | Proposed | XL     | Multi-language support               |
+| 8        | ADR-031 | Data Retention & Privacy | Proposed | XL     | Compliance requirements              |
 
 ---
 
@@ -148,6 +149,9 @@ These ADRs are proposed or partially implemented, ordered by suggested implement
 
 | Date       | ADR     | Change                                                                              |
 | ---------- | ------- | ----------------------------------------------------------------------------------- |
+| 2026-01-28 | ADR-024 | Fully implemented - Backend/frontend feature flags, 89 tests, admin endpoint        |
+| 2026-01-28 | ADR-057 | Created - Test remediation documentation for ADR-008 Phase 2 migration              |
+| 2026-01-28 | ADR-013 | Marked as Superseded by ADR-023                                                     |
 | 2026-01-27 | ADR-008 | Test path migration complete - 23 files, ~70 paths updated, 274->345 tests passing  |
 | 2026-01-27 | ADR-008 | Phase 2 Complete - Version router factory, deprecation headers, 82 versioning tests |
 | 2026-01-26 | ADR-015 | Completed - Added Sentry user context in AuthProvider, now fully implemented        |

docs/adr/index.md

@@ -2,6 +2,8 @@
 
 This directory contains a log of the architectural decisions made for the Flyer Crawler project.
 
+**[Implementation Tracker](./adr-implementation-tracker.md)**: Track implementation status and effort estimates for all ADRs.
+
 ## 1. Foundational / Core Infrastructure
 
 **[ADR-002](./0002-standardized-transaction-management.md)**: Standardized Transaction Management and Unit of Work Pattern (Accepted)
@@ -12,7 +14,7 @@ This directory contains a log of the architectural decisions made for the Flyer
 ## 2. Data Management
 
 **[ADR-009](./0009-caching-strategy-for-read-heavy-operations.md)**: Caching Strategy for Read-Heavy Operations (Accepted)
-**[ADR-013](./0013-database-schema-migration-strategy.md)**: Database Schema Migration Strategy (Proposed)
+**[ADR-013](./0013-database-schema-migration-strategy.md)**: Database Schema Migration Strategy (Superseded by ADR-023)
 **[ADR-019](./0019-data-backup-and-recovery-strategy.md)**: Data Backup and Recovery Strategy (Accepted)
 **[ADR-023](./0023-database-schema-migration-strategy.md)**: Database Schema Migration Strategy (Proposed)
 **[ADR-031](./0031-data-retention-and-privacy-compliance.md)**: Data Retention and Privacy Compliance (Proposed)
@@ -20,9 +22,9 @@ This directory contains a log of the architectural decisions made for the Flyer
 ## 3. API & Integration
 
 **[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 1 Complete)
-**[ADR-018](./0018-api-documentation-strategy.md)**: API Documentation Strategy (Accepted)
-**[ADR-022](./0022-real-time-notification-system.md)**: Real-time Notification System (Proposed)
+**[ADR-008](./0008-api-versioning-strategy.md)**: API Versioning Strategy (Accepted - Phase 2 Complete)
+**[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)
 
 ## 4. Security & Compliance
@@ -33,12 +35,12 @@ This directory contains a log of the architectural decisions made for the Flyer
 **[ADR-029](./0029-secret-rotation-and-key-management.md)**: Secret Rotation and Key Management Strategy (Proposed)
 **[ADR-032](./0032-rate-limiting-strategy.md)**: Rate Limiting Strategy (Accepted)
 **[ADR-033](./0033-file-upload-and-storage-strategy.md)**: File Upload and Storage Strategy (Accepted)
-**[ADR-048](./0048-authentication-strategy.md)**: Authentication Strategy (Partially Implemented)
+**[ADR-048](./0048-authentication-strategy.md)**: Authentication Strategy (Accepted)
 
 ## 5. Observability & Monitoring
 
 **[ADR-004](./0004-standardized-application-wide-structured-logging.md)**: Standardized Application-Wide Structured Logging (Accepted)
-**[ADR-015](./0015-error-tracking-and-observability.md)**: Error Tracking and Observability (Partial)
+**[ADR-015](./0015-error-tracking-and-observability.md)**: Error Tracking and Observability (Accepted)
 **[ADR-050](./0050-postgresql-function-observability.md)**: PostgreSQL Function Observability (Accepted)
 **[ADR-051](./0051-asynchronous-context-propagation.md)**: Asynchronous Context Propagation (Accepted)
 **[ADR-052](./0052-granular-debug-logging-strategy.md)**: Granular Debug Logging Strategy (Accepted)
@@ -52,7 +54,7 @@ This directory contains a log of the architectural decisions made for the Flyer
 **[ADR-024](./0024-feature-flagging-strategy.md)**: Feature Flagging Strategy (Proposed)
 **[ADR-037](./0037-scheduled-jobs-and-cron-pattern.md)**: Scheduled Jobs and Cron Pattern (Accepted)
 **[ADR-038](./0038-graceful-shutdown-pattern.md)**: Graceful Shutdown Pattern (Accepted)
-**[ADR-053](./0053-worker-health-checks-and-monitoring.md)**: Worker Health Checks and Monitoring (Proposed)
+**[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)
 
 ## 7. Frontend / User Interface
@@ -72,6 +74,7 @@ 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)
 
 ## 9. Architecture Patterns
 

docs/architecture/DATABASE.md

@@ -1,10 +1,168 @@
-# Database Setup
+# Database Architecture
 
-Flyer Crawler uses PostgreSQL with several extensions for full-text search, geographic data, and UUID generation.
+**Version**: 0.12.20
+**Last Updated**: 2026-01-28
+
+Flyer Crawler uses PostgreSQL 16 with PostGIS for geographic data, pg_trgm for fuzzy text search, and uuid-ossp for UUID generation. The database contains 65 tables organized into logical domains.
+
+## Table of Contents
+
+1. [Schema Overview](#schema-overview)
+2. [Database Setup](#database-setup)
+3. [Schema Reference](#schema-reference)
+4. [Related Documentation](#related-documentation)
 
 ---
 
-## Required Extensions
+## Schema Overview
+
+The database is organized into the following domains:
+
+### Core Infrastructure (6 tables)
+
+| Table                   | Purpose                                   | Primary Key       |
+| ----------------------- | ----------------------------------------- | ----------------- |
+| `users`                 | Authentication credentials and login data | `user_id` (UUID)  |
+| `profiles`              | Public user data, preferences, points     | `user_id` (UUID)  |
+| `addresses`             | Normalized address storage with geocoding | `address_id`      |
+| `activity_log`          | User activity audit trail                 | `activity_log_id` |
+| `password_reset_tokens` | Temporary tokens for password reset       | `token_id`        |
+| `schema_info`           | Schema deployment metadata                | `environment`     |
+
+### Stores and Locations (4 tables)
+
+| Table                    | Purpose                                 | Primary Key         |
+| ------------------------ | --------------------------------------- | ------------------- |
+| `stores`                 | Grocery store chains (Safeway, Kroger)  | `store_id`          |
+| `store_locations`        | Physical store locations with addresses | `store_location_id` |
+| `favorite_stores`        | User store favorites                    | `user_id, store_id` |
+| `store_receipt_patterns` | Receipt text patterns for store ID      | `pattern_id`        |
+
+### Flyers and Items (7 tables)
+
+| Table                   | Purpose                                | Primary Key              |
+| ----------------------- | -------------------------------------- | ------------------------ |
+| `flyers`                | Uploaded flyer metadata and status     | `flyer_id`               |
+| `flyer_items`           | Individual deals extracted from flyers | `flyer_item_id`          |
+| `flyer_locations`       | Flyer-to-location associations         | `flyer_location_id`      |
+| `categories`            | Item categorization (Produce, Dairy)   | `category_id`            |
+| `master_grocery_items`  | Canonical grocery item dictionary      | `master_grocery_item_id` |
+| `master_item_aliases`   | Alternative names for master items     | `alias_id`               |
+| `unmatched_flyer_items` | Items pending master item matching     | `unmatched_item_id`      |
+
+### Products and Brands (2 tables)
+
+| Table      | Purpose                                        | Primary Key  |
+| ---------- | ---------------------------------------------- | ------------ |
+| `brands`   | Brand names (Coca-Cola, Kraft)                 | `brand_id`   |
+| `products` | Specific products (master item + brand + size) | `product_id` |
+
+### Price Tracking (3 tables)
+
+| Table                   | Purpose                            | Primary Key        |
+| ----------------------- | ---------------------------------- | ------------------ |
+| `item_price_history`    | Historical prices for master items | `price_history_id` |
+| `user_submitted_prices` | User-contributed price reports     | `submission_id`    |
+| `suggested_corrections` | Suggested edits to flyer items     | `correction_id`    |
+
+### User Features (8 tables)
+
+| Table                | Purpose                              | Primary Key                 |
+| -------------------- | ------------------------------------ | --------------------------- |
+| `user_watched_items` | Items user wants to track prices for | `user_watched_item_id`      |
+| `user_alerts`        | Price alert thresholds               | `alert_id`                  |
+| `notifications`      | User notifications                   | `notification_id`           |
+| `user_item_aliases`  | User-defined item name aliases       | `alias_id`                  |
+| `user_follows`       | User-to-user follow relationships    | `follower_id, following_id` |
+| `user_reactions`     | Reactions to content (likes, etc.)   | `reaction_id`               |
+| `budgets`            | User-defined spending budgets        | `budget_id`                 |
+| `search_queries`     | Search history for analytics         | `query_id`                  |
+
+### Shopping Lists (4 tables)
+
+| Table                   | Purpose                  | Primary Key               |
+| ----------------------- | ------------------------ | ------------------------- |
+| `shopping_lists`        | User shopping lists      | `shopping_list_id`        |
+| `shopping_list_items`   | Items on shopping lists  | `shopping_list_item_id`   |
+| `shared_shopping_lists` | Shopping list sharing    | `shared_shopping_list_id` |
+| `shopping_trips`        | Completed shopping trips | `trip_id`                 |
+| `shopping_trip_items`   | Items purchased on trips | `trip_item_id`            |
+
+### Recipes (11 tables)
+
+| Table                             | Purpose                          | Primary Key               |
+| --------------------------------- | -------------------------------- | ------------------------- |
+| `recipes`                         | User recipes with metadata       | `recipe_id`               |
+| `recipe_ingredients`              | Recipe ingredient list           | `recipe_ingredient_id`    |
+| `recipe_ingredient_substitutions` | Ingredient alternatives          | `substitution_id`         |
+| `tags`                            | Recipe tags (vegan, quick, etc.) | `tag_id`                  |
+| `recipe_tags`                     | Recipe-to-tag associations       | `recipe_id, tag_id`       |
+| `appliances`                      | Kitchen appliances               | `appliance_id`            |
+| `recipe_appliances`               | Appliances needed for recipes    | `recipe_id, appliance_id` |
+| `recipe_ratings`                  | User ratings for recipes         | `rating_id`               |
+| `recipe_comments`                 | User comments on recipes         | `comment_id`              |
+| `favorite_recipes`                | User recipe favorites            | `user_id, recipe_id`      |
+| `recipe_collections`              | User recipe collections          | `collection_id`           |
+
+### Meal Planning (3 tables)
+
+| Table               | Purpose                    | Primary Key       |
+| ------------------- | -------------------------- | ----------------- |
+| `menu_plans`        | Weekly/monthly meal plans  | `menu_plan_id`    |
+| `shared_menu_plans` | Menu plan sharing          | `share_id`        |
+| `planned_meals`     | Individual meals in a plan | `planned_meal_id` |
+
+### Pantry and Inventory (4 tables)
+
+| Table                | Purpose                              | Primary Key       |
+| -------------------- | ------------------------------------ | ----------------- |
+| `pantry_items`       | User pantry inventory                | `pantry_item_id`  |
+| `pantry_locations`   | Storage locations (fridge, freezer)  | `location_id`     |
+| `expiry_date_ranges` | Reference shelf life data            | `expiry_range_id` |
+| `expiry_alerts`      | User expiry notification preferences | `expiry_alert_id` |
+| `expiry_alert_log`   | Sent expiry notifications            | `alert_log_id`    |
+
+### Receipts (4 tables)
+
+| Table                    | Purpose                       | Primary Key       |
+| ------------------------ | ----------------------------- | ----------------- |
+| `receipts`               | Scanned receipt metadata      | `receipt_id`      |
+| `receipt_items`          | Items parsed from receipts    | `receipt_item_id` |
+| `receipt_processing_log` | OCR/AI processing audit trail | `log_id`          |
+
+### UPC Scanning (2 tables)
+
+| Table                  | Purpose                         | Primary Key |
+| ---------------------- | ------------------------------- | ----------- |
+| `upc_scan_history`     | User barcode scan history       | `scan_id`   |
+| `upc_external_lookups` | External UPC API response cache | `lookup_id` |
+
+### Gamification (2 tables)
+
+| Table               | Purpose                      | Primary Key               |
+| ------------------- | ---------------------------- | ------------------------- |
+| `achievements`      | Defined achievements         | `achievement_id`          |
+| `user_achievements` | Achievements earned by users | `user_id, achievement_id` |
+
+### User Preferences (3 tables)
+
+| Table                       | Purpose                      | Primary Key               |
+| --------------------------- | ---------------------------- | ------------------------- |
+| `dietary_restrictions`      | Defined dietary restrictions | `restriction_id`          |
+| `user_dietary_restrictions` | User dietary preferences     | `user_id, restriction_id` |
+| `user_appliances`           | Appliances user owns         | `user_id, appliance_id`   |
+
+### Reference Data (1 table)
+
+| Table              | Purpose                 | Primary Key     |
+| ------------------ | ----------------------- | --------------- |
+| `unit_conversions` | Unit conversion factors | `conversion_id` |
+
+---
+
+## Database Setup
+
+### Required Extensions
 
 | Extension   | Purpose                                     |
 | ----------- | ------------------------------------------- |
@@ -14,7 +172,7 @@ Flyer Crawler uses PostgreSQL with several extensions for full-text search, geog
 
 ---
 
-## Database Users
+### Database Users
 
 This project uses **environment-specific database users** to isolate production and test environments:
 

docs/architecture/OVERVIEW.md

@@ -1,7 +1,7 @@
 # Flyer Crawler - System Architecture Overview
 
-**Version**: 0.12.5
-**Last Updated**: 2026-01-22
+**Version**: 0.12.20
+**Last Updated**: 2026-01-28
 **Platform**: Linux (Production and Development)
 
 ---
@@ -41,7 +41,7 @@
 
 ## System Architecture Diagram
 
-```
+```text
 +-----------------------------------------------------------------------------------+
 |                                   CLIENT LAYER                                     |
 +-----------------------------------------------------------------------------------+
@@ -153,10 +153,10 @@
 | Component              | Technology | Version  | Purpose                          |
 | ---------------------- | ---------- | -------- | -------------------------------- |
 | **Runtime**            | Node.js    | 22.x LTS | Server-side JavaScript runtime   |
-| **Language**           | TypeScript | 5.9.x    | Type-safe JavaScript superset    |
-| **Web Framework**      | Express.js | 5.1.x    | HTTP server and routing          |
-| **Frontend Framework** | React      | 19.2.x   | UI component library             |
-| **Build Tool**         | Vite       | 7.2.x    | Frontend bundling and dev server |
+| **Language**           | TypeScript | 5.9.3    | Type-safe JavaScript superset    |
+| **Web Framework**      | Express.js | 5.1.0    | HTTP server and routing          |
+| **Frontend Framework** | React      | 19.2.0   | UI component library             |
+| **Build Tool**         | Vite       | 7.2.4    | Frontend bundling and dev server |
 
 ### Data Storage
 
@@ -176,23 +176,23 @@
 | **OAuth**       | Google, GitHub              | Social authentication                   |
 | **Email**       | Nodemailer (SMTP)           | Transactional emails                    |
 
-### Background Processing
+### Background Processing Stack
 
 | Component           | Technology | Version | Purpose                           |
 | ------------------- | ---------- | ------- | --------------------------------- |
-| **Job Queues**      | BullMQ     | 5.65.x  | Reliable async job processing     |
+| **Job Queues**      | BullMQ     | 5.65.1  | Reliable async job processing     |
 | **Process Manager** | PM2        | Latest  | Process management and clustering |
-| **Scheduler**       | node-cron  | 4.2.x   | Scheduled tasks                   |
+| **Scheduler**       | node-cron  | 4.2.1   | Scheduled tasks                   |
 
 ### Frontend Stack
 
 | Component            | Technology     | Version | Purpose                                  |
 | -------------------- | -------------- | ------- | ---------------------------------------- |
-| **State Management** | TanStack Query | 5.90.x  | Server state caching and synchronization |
-| **Routing**          | React Router   | 7.9.x   | Client-side routing                      |
-| **Styling**          | Tailwind CSS   | 4.1.x   | Utility-first CSS framework              |
-| **Icons**            | Lucide React   | 0.555.x | Icon components                          |
-| **Charts**           | Recharts       | 3.4.x   | Data visualization                       |
+| **State Management** | TanStack Query | 5.90.12 | Server state caching and synchronization |
+| **Routing**          | React Router   | 7.9.6   | Client-side routing                      |
+| **Styling**          | Tailwind CSS   | 4.1.17  | Utility-first CSS framework              |
+| **Icons**            | Lucide React   | 0.555.0 | Icon components                          |
+| **Charts**           | Recharts       | 3.4.1   | Data visualization                       |
 
 ### Observability and Quality
 
@@ -221,7 +221,7 @@ The frontend is a single-page application (SPA) built with React 19 and Vite.
 
 **Directory Structure**:
 
-```
+```text
 src/
 +-- components/      # Reusable UI components
 +-- contexts/        # React context providers
@@ -244,17 +244,30 @@ The backend is a RESTful API server built with Express.js 5.
 - Structured logging with Pino
 - Standardized error handling (ADR-001)
 
-**API Route Modules**:
-| Route | Purpose |
-|-------|---------|
-| `/api/auth` | Authentication (login, register, OAuth) |
-| `/api/users` | User profile management |
-| `/api/flyers` | Flyer CRUD and processing |
-| `/api/recipes` | Recipe management |
-| `/api/deals` | Best prices and deal discovery |
-| `/api/stores` | Store management |
-| `/api/admin` | Administrative functions |
-| `/api/health` | Health checks and monitoring |
+**API Route Modules** (all versioned under `/api/v1/*`):
+
+| Route                     | Purpose                                         |
+| ------------------------- | ----------------------------------------------- |
+| `/api/v1/auth`            | Authentication (login, register, OAuth)         |
+| `/api/v1/health`          | Health checks and monitoring                    |
+| `/api/v1/system`          | System administration (PM2 status, server info) |
+| `/api/v1/users`           | User profile management                         |
+| `/api/v1/ai`              | AI-powered features and flyer processing        |
+| `/api/v1/admin`           | Administrative functions                        |
+| `/api/v1/budgets`         | Budget management and spending analysis         |
+| `/api/v1/achievements`    | Gamification and achievement system             |
+| `/api/v1/flyers`          | Flyer CRUD and processing                       |
+| `/api/v1/recipes`         | Recipe management and recommendations           |
+| `/api/v1/personalization` | Master items and user preferences               |
+| `/api/v1/price-history`   | Price tracking and trend analysis               |
+| `/api/v1/stats`           | Public statistics and analytics                 |
+| `/api/v1/upc`             | UPC barcode scanning and product lookup         |
+| `/api/v1/inventory`       | Inventory and expiry tracking                   |
+| `/api/v1/receipts`        | Receipt scanning and purchase history           |
+| `/api/v1/deals`           | Best prices and deal discovery                  |
+| `/api/v1/reactions`       | Social features (reactions, sharing)            |
+| `/api/v1/stores`          | Store management and location services          |
+| `/api/v1/categories`      | Category browsing and product categorization    |
 
 ### Database (PostgreSQL/PostGIS)
 
@@ -331,7 +344,7 @@ BullMQ workers handle asynchronous processing tasks. PM2 manages both the API se
 
 ### Flyer Processing Pipeline
 
-```
+```text
 +-------------+     +----------------+     +------------------+     +---------------+
 |   User      |     |   Express      |     |   BullMQ         |     |   PostgreSQL  |
 |   Upload    +---->+   Route        +---->+   Queue          +---->+   Storage     |
@@ -395,7 +408,7 @@ BullMQ workers handle asynchronous processing tasks. PM2 manages both the API se
 
 The application follows a strict layered architecture as defined in ADR-035.
 
-```
+```text
 +-----------------------------------------------------------------------+
 |                          ROUTES LAYER                                  |
 |  Responsibilities:                                                     |
@@ -458,7 +471,7 @@ The application follows a strict layered architecture as defined in ADR-035.
 
 ### Entity Relationship Overview
 
-```
+```text
 +------------------+          +------------------+          +------------------+
 |      users       |          |     profiles     |          |    addresses     |
 |------------------|          |------------------|          |------------------|
@@ -537,7 +550,7 @@ The application follows a strict layered architecture as defined in ADR-035.
 
 ### JWT Token Architecture
 
-```
+```text
 +-------------------+     +-------------------+     +-------------------+
 |   Login Request   |     |   Server          |     |   Database        |
 |   (email/pass)    +---->+   Validates       +---->+   Verify User     |
@@ -576,7 +589,7 @@ The application follows a strict layered architecture as defined in ADR-035.
 
 ### Protected Route Flow
 
-```
+```text
 +-------------------+     +-------------------+     +-------------------+
 |   API Request     |     |   requireAuth     |     |   JWT Strategy    |
 |   + Bearer Token  +---->+   Middleware      +---->+   Validate        |
@@ -603,7 +616,7 @@ The application follows a strict layered architecture as defined in ADR-035.
 
 ### Worker Architecture
 
-```
+```text
 +-------------------+     +-------------------+     +-------------------+
 |   API Server      |     |   Redis           |     |   Worker Process  |
 |   (Queue Producer)|     |   (Job Storage)   |     |   (Consumer)      |
@@ -635,7 +648,7 @@ The application follows a strict layered architecture as defined in ADR-035.
 
 Jobs use exponential backoff for retries:
 
-```
+```text
 Attempt 1: Immediate
 Attempt 2: Initial delay (e.g., 5 seconds)
 Attempt 3: 2x delay (e.g., 10 seconds)
@@ -658,7 +671,7 @@ Attempt 4: 4x delay (e.g., 20 seconds)
 
 ### Environment Overview
 
-```
+```text
 +-----------------------------------------------------------------------------------+
 |                              DEVELOPMENT                                           |
 +-----------------------------------------------------------------------------------+
@@ -710,7 +723,7 @@ Attempt 4: 4x delay (e.g., 20 seconds)
 
 ### Deployment Pipeline (ADR-017)
 
-```
+```text
 +------------+     +------------+     +------------+     +------------+
 |   Push to  |     |   Gitea    |     |   Build &  |     |   Deploy   |
 |   main     +---->+   Actions  +---->+   Test     +---->+   to Prod  |
@@ -839,22 +852,55 @@ The system architecture is governed by Architecture Decision Records (ADRs). Key
 | File                                            | Purpose                                 |
 | ----------------------------------------------- | --------------------------------------- |
 | `src/services/flyerProcessingService.server.ts` | Flyer processing pipeline orchestration |
+| `src/services/flyerAiProcessor.server.ts`       | AI extraction for flyers                |
 | `src/services/aiService.server.ts`              | Google Gemini AI integration            |
 | `src/services/cacheService.server.ts`           | Redis caching abstraction               |
 | `src/services/emailService.server.ts`           | Email sending                           |
 | `src/services/queues.server.ts`                 | BullMQ queue definitions                |
+| `src/services/queueService.server.ts`           | Queue management and scheduling         |
 | `src/services/workers.server.ts`                | BullMQ worker definitions               |
+| `src/services/websocketService.server.ts`       | Real-time WebSocket notifications       |
+| `src/services/receiptService.server.ts`         | Receipt scanning and OCR                |
+| `src/services/upcService.server.ts`             | UPC barcode lookup                      |
+| `src/services/expiryService.server.ts`          | Pantry expiry tracking                  |
+| `src/services/geocodingService.server.ts`       | Address geocoding                       |
+| `src/services/analyticsService.server.ts`       | Analytics and reporting                 |
+| `src/services/monitoringService.server.ts`      | Health monitoring                       |
+| `src/services/barcodeService.server.ts`         | Barcode detection                       |
+| `src/services/logger.server.ts`                 | Structured logging (Pino)               |
+| `src/services/redis.server.ts`                  | Redis connection management             |
+| `src/services/sentry.server.ts`                 | Error tracking (Sentry/Bugsink)         |
 
 ### Database Files
 
-| File                               | Purpose                                      |
-| ---------------------------------- | -------------------------------------------- |
-| `src/services/db/connection.db.ts` | Database pool and transaction management     |
-| `src/services/db/errors.db.ts`     | Database error types                         |
-| `src/services/db/user.db.ts`       | User repository                              |
-| `src/services/db/flyer.db.ts`      | Flyer repository                             |
-| `sql/master_schema_rollup.sql`     | Complete database schema (for test DB setup) |
-| `sql/initial_schema.sql`           | Fresh installation schema                    |
+| File                                    | Purpose                                      |
+| --------------------------------------- | -------------------------------------------- |
+| `src/services/db/connection.db.ts`      | Database pool and transaction management     |
+| `src/services/db/errors.db.ts`          | Database error types                         |
+| `src/services/db/index.db.ts`           | Repository exports                           |
+| `src/services/db/user.db.ts`            | User repository                              |
+| `src/services/db/flyer.db.ts`           | Flyer repository                             |
+| `src/services/db/store.db.ts`           | Store repository                             |
+| `src/services/db/storeLocation.db.ts`   | Store location repository                    |
+| `src/services/db/recipe.db.ts`          | Recipe repository                            |
+| `src/services/db/category.db.ts`        | Category repository                          |
+| `src/services/db/personalization.db.ts` | Master items and personalization             |
+| `src/services/db/shopping.db.ts`        | Shopping lists repository                    |
+| `src/services/db/deals.db.ts`           | Deals and best prices repository             |
+| `src/services/db/price.db.ts`           | Price history repository                     |
+| `src/services/db/receipt.db.ts`         | Receipt repository                           |
+| `src/services/db/upc.db.ts`             | UPC scan history repository                  |
+| `src/services/db/expiry.db.ts`          | Expiry tracking repository                   |
+| `src/services/db/gamification.db.ts`    | Achievements repository                      |
+| `src/services/db/budget.db.ts`          | Budget repository                            |
+| `src/services/db/reaction.db.ts`        | User reactions repository                    |
+| `src/services/db/notification.db.ts`    | Notifications repository                     |
+| `src/services/db/address.db.ts`         | Address repository                           |
+| `src/services/db/admin.db.ts`           | Admin operations repository                  |
+| `src/services/db/conversion.db.ts`      | Unit conversion repository                   |
+| `src/services/db/flyerLocation.db.ts`   | Flyer locations repository                   |
+| `sql/master_schema_rollup.sql`          | Complete database schema (for test DB setup) |
+| `sql/initial_schema.sql`                | Fresh installation schema                    |
 
 ### Type Definitions
 

docs/development/CODE-PATTERNS.md

@@ -2,8 +2,26 @@
 
 Common code patterns extracted from Architecture Decision Records (ADRs). Use these as templates when writing new code.
 
+## Quick Reference
+
+| 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)
@@ -12,12 +30,166 @@ Common code patterns extracted from Architecture Decision Records (ADRs). Use th
 - [Authentication](#authentication)
 - [Caching](#caching)
 - [Background Jobs](#background-jobs)
+- [Feature Flags](#feature-flags)
+
+---
+
+## 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-for-database-operations.md)
+**ADR**: [ADR-001](../adr/0001-standardized-error-handling.md)
 
 ### Repository Layer Error Handling
 
@@ -78,7 +250,7 @@ throw new DatabaseError('Failed to insert flyer', originalError);
 
 ## Repository Patterns
 
-**ADR**: [ADR-034](../adr/0034-repository-layer-method-naming-conventions.md)
+**ADR**: [ADR-034](../adr/0034-repository-pattern-standards.md)
 
 ### Method Naming Conventions
 
@@ -155,16 +327,17 @@ export async function listActiveFlyers(client?: PoolClient): Promise<Flyer[]> {
 
 ## API Response Patterns
 
-**ADR**: [ADR-028](../adr/0028-consistent-api-response-format.md)
+**ADR**: [ADR-028](../adr/0028-api-response-standardization.md)
 
 ### Success Response
 
 ```typescript
 import { sendSuccess } from '../utils/apiResponse';
 
-app.post('/api/flyers', async (req, res) => {
+app.post('/api/v1/flyers', async (req, res) => {
   const flyer = await flyerService.createFlyer(req.body);
-  return sendSuccess(res, flyer, 'Flyer created successfully', 201);
+  // sendSuccess(res, data, statusCode?, meta?)
+  return sendSuccess(res, flyer, 201);
 });
 ```
 
@@ -173,30 +346,32 @@ app.post('/api/flyers', async (req, res) => {
 ```typescript
 import { sendPaginated } from '../utils/apiResponse';
 
-app.get('/api/flyers', async (req, res) => {
-  const { page = 1, pageSize = 20 } = req.query;
-  const { items, total } = await flyerService.listFlyers(page, pageSize);
+app.get('/api/v1/flyers', async (req, res) => {
+  const page = parseInt(req.query.page as string) || 1;
+  const limit = parseInt(req.query.limit as string) || 20;
+  const { items, total } = await flyerService.listFlyers(page, limit);
 
-  return sendPaginated(res, {
-    items,
-    total,
-    page: parseInt(page),
-    pageSize: parseInt(pageSize),
-  });
+  // sendPaginated(res, data[], { page, limit, total }, meta?)
+  return sendPaginated(res, items, { page, limit, total });
 });
 ```
 
 ### Error Response
 
 ```typescript
-import { sendError } from '../utils/apiResponse';
+import { sendError, sendSuccess, ErrorCode } from '../utils/apiResponse';
 
-app.get('/api/flyers/:id', async (req, res) => {
+app.get('/api/v1/flyers/:id', async (req, res) => {
   try {
     const flyer = await flyerDb.getFlyerById(parseInt(req.params.id));
     return sendSuccess(res, flyer);
   } catch (error) {
-    return sendError(res, error); // Automatically maps error to correct status
+    // sendError(res, code, message, statusCode?, details?, meta?)
+    if (error instanceof NotFoundError) {
+      return sendError(res, ErrorCode.NOT_FOUND, error.message, 404);
+    }
+    req.log.error({ error }, `Error in ${req.originalUrl.split('?')[0]}:`);
+    return sendError(res, ErrorCode.INTERNAL_ERROR, 'An error occurred', 500);
   }
 });
 ```
@@ -205,12 +380,12 @@ app.get('/api/flyers/:id', async (req, res) => {
 
 ## Transaction Management
 
-**ADR**: [ADR-002](../adr/0002-transaction-management-pattern.md)
+**ADR**: [ADR-002](../adr/0002-standardized-transaction-management.md)
 
 ### Basic Transaction
 
 ```typescript
-import { withTransaction } from '../services/db/transaction.db';
+import { withTransaction } from '../services/db/connection.db';
 
 export async function createFlyerWithItems(
   flyerData: FlyerInput,
@@ -262,7 +437,7 @@ export async function bulkImportFlyers(flyersData: FlyerInput[]): Promise<Import
 
 ## Input Validation
 
-**ADR**: [ADR-003](../adr/0003-input-validation-framework.md)
+**ADR**: [ADR-003](../adr/0003-standardized-input-validation-using-middleware.md)
 
 ### Zod Schema Definition
 
@@ -298,10 +473,10 @@ export type CreateFlyerInput = z.infer<typeof createFlyerSchema>;
 import { validateRequest } from '../middleware/validation';
 import { createFlyerSchema } from '../schemas/flyer.schemas';
 
-app.post('/api/flyers', validateRequest(createFlyerSchema), async (req, res) => {
+app.post('/api/v1/flyers', validateRequest(createFlyerSchema), async (req, res) => {
   // req.body is now type-safe and validated
   const flyer = await flyerService.createFlyer(req.body);
-  return sendSuccess(res, flyer, 'Flyer created successfully', 201);
+  return sendSuccess(res, flyer, 201);
 });
 ```
 
@@ -331,7 +506,7 @@ export async function processFlyer(data: unknown): Promise<Flyer> {
 import { authenticateJWT } from '../middleware/auth';
 
 app.get(
-  '/api/profile',
+  '/api/v1/profile',
   authenticateJWT, // Middleware adds req.user
   async (req, res) => {
     // req.user is guaranteed to exist
@@ -347,7 +522,7 @@ app.get(
 import { optionalAuth } from '../middleware/auth';
 
 app.get(
-  '/api/flyers',
+  '/api/v1/flyers',
   optionalAuth, // req.user may or may not exist
   async (req, res) => {
     const flyers = req.user
@@ -374,7 +549,7 @@ export function generateToken(user: User): string {
 
 ## Caching
 
-**ADR**: [ADR-029](../adr/0029-redis-caching-strategy.md)
+**ADR**: [ADR-009](../adr/0009-caching-strategy-for-read-heavy-operations.md)
 
 ### Cache Pattern
 
@@ -414,7 +589,7 @@ export async function updateFlyer(id: number, data: UpdateFlyerInput): Promise<F
 
 ## Background Jobs
 
-**ADR**: [ADR-036](../adr/0036-background-job-processing-architecture.md)
+**ADR**: [ADR-006](../adr/0006-background-job-processing-and-task-queues.md)
 
 ### Queue Job
 
@@ -473,6 +648,153 @@ const flyerWorker = new Worker(
 
 ---
 
+## Feature Flags
+
+**ADR**: [ADR-024](../adr/0024-feature-flagging-strategy.md)
+
+Feature flags enable controlled feature rollout, A/B testing, and quick production disablement without redeployment. All flags default to `false` (opt-in model).
+
+### Backend Usage
+
+```typescript
+import { isFeatureEnabled, getFeatureFlags } from '../services/featureFlags.server';
+
+// Check a specific flag in route handler
+router.get('/dashboard', async (req, res) => {
+  if (isFeatureEnabled('newDashboard')) {
+    return sendSuccess(res, { version: 'v2', data: await getNewDashboardData() });
+  }
+  return sendSuccess(res, { version: 'v1', data: await getLegacyDashboardData() });
+});
+
+// Check flag in service layer
+function processFlyer(flyer: Flyer): ProcessedFlyer {
+  if (isFeatureEnabled('experimentalAi')) {
+    return processWithExperimentalAi(flyer);
+  }
+  return processWithStandardAi(flyer);
+}
+
+// Get all flags (admin endpoint)
+router.get('/admin/feature-flags', requireAdmin, async (req, res) => {
+  sendSuccess(res, { flags: getFeatureFlags() });
+});
+```
+
+### Frontend Usage
+
+```tsx
+import { useFeatureFlag, useAllFeatureFlags } from '../hooks/useFeatureFlag';
+import { FeatureFlag } from '../components/FeatureFlag';
+
+// Hook approach - for logic beyond rendering
+function Dashboard() {
+  const isNewDashboard = useFeatureFlag('newDashboard');
+
+  useEffect(() => {
+    if (isNewDashboard) {
+      analytics.track('new_dashboard_viewed');
+    }
+  }, [isNewDashboard]);
+
+  return isNewDashboard ? <NewDashboard /> : <LegacyDashboard />;
+}
+
+// Declarative component approach
+function App() {
+  return (
+    <FeatureFlag feature="newDashboard" fallback={<LegacyDashboard />}>
+      <NewDashboard />
+    </FeatureFlag>
+  );
+}
+
+// Debug panel showing all flags
+function DebugPanel() {
+  const flags = useAllFeatureFlags();
+  return (
+    <ul>
+      {Object.entries(flags).map(([name, enabled]) => (
+        <li key={name}>
+          {name}: {enabled ? 'ON' : 'OFF'}
+        </li>
+      ))}
+    </ul>
+  );
+}
+```
+
+### Adding a New Flag
+
+1. **Backend** (`src/config/env.ts`):
+
+   ```typescript
+   // In featureFlagsSchema
+   myNewFeature: booleanString(false),  // FEATURE_MY_NEW_FEATURE
+
+   // In loadEnvVars()
+   myNewFeature: process.env.FEATURE_MY_NEW_FEATURE,
+   ```
+
+2. **Frontend** (`src/config.ts` and `src/vite-env.d.ts`):
+
+   ```typescript
+   // In config.ts featureFlags section
+   myNewFeature: import.meta.env.VITE_FEATURE_MY_NEW_FEATURE === 'true',
+
+   // In vite-env.d.ts
+   readonly VITE_FEATURE_MY_NEW_FEATURE?: string;
+   ```
+
+3. **Environment** (`.env.example`):
+
+   ```bash
+   # FEATURE_MY_NEW_FEATURE=false
+   # VITE_FEATURE_MY_NEW_FEATURE=false
+   ```
+
+### Testing Feature Flags
+
+```typescript
+// Backend - reset modules to test different states
+beforeEach(() => {
+  vi.resetModules();
+  process.env.FEATURE_NEW_DASHBOARD = 'true';
+});
+
+// Frontend - mock config module
+vi.mock('../config', () => ({
+  default: {
+    featureFlags: {
+      newDashboard: true,
+      betaRecipes: false,
+    },
+  },
+}));
+```
+
+### Flag Lifecycle
+
+| Phase      | Actions                                                        |
+| ---------- | -------------------------------------------------------------- |
+| **Add**    | Add to schemas (backend + frontend), default `false`, document |
+| **Enable** | Set env var `='true'`, restart application                     |
+| **Remove** | Remove conditional code, remove from schemas, remove env vars  |
+| **Sunset** | Max 3 months after full rollout - remove flag                  |
+
+### Current Flags
+
+| Flag             | Backend Env Var           | Frontend Env Var               | Purpose                  |
+| ---------------- | ------------------------- | ------------------------------ | ------------------------ |
+| `bugsinkSync`    | `FEATURE_BUGSINK_SYNC`    | `VITE_FEATURE_BUGSINK_SYNC`    | Bugsink error sync       |
+| `advancedRbac`   | `FEATURE_ADVANCED_RBAC`   | `VITE_FEATURE_ADVANCED_RBAC`   | Advanced RBAC features   |
+| `newDashboard`   | `FEATURE_NEW_DASHBOARD`   | `VITE_FEATURE_NEW_DASHBOARD`   | New dashboard experience |
+| `betaRecipes`    | `FEATURE_BETA_RECIPES`    | `VITE_FEATURE_BETA_RECIPES`    | Beta recipe features     |
+| `experimentalAi` | `FEATURE_EXPERIMENTAL_AI` | `VITE_FEATURE_EXPERIMENTAL_AI` | Experimental AI features |
+| `debugMode`      | `FEATURE_DEBUG_MODE`      | `VITE_FEATURE_DEBUG_MODE`      | Debug mode               |
+
+---
+
 ## Related Documentation
 
 - [ADR Index](../adr/index.md) - All architecture decision records

docs/development/DEBUGGING.md

@@ -229,7 +229,7 @@ SELECT * FROM flyers WHERE store_id = 1;
 - Add missing indexes
 - Optimize WHERE clauses
 - Use connection pooling
-- See [ADR-034](../adr/0034-repository-layer-method-naming-conventions.md)
+- See [ADR-034](../adr/0034-repository-pattern-standards.md)
 
 ---
 
@@ -237,7 +237,7 @@ SELECT * FROM flyers WHERE store_id = 1;
 
 ### Tests Pass on Windows, Fail in Container
 
-**Cause**: Platform-specific behavior (ADR-014)
+**Cause**: Platform-specific behavior ([ADR-014](../adr/0014-containerization-and-deployment-strategy.md))
 
 **Rule**: Container results are authoritative. Windows results are unreliable.
 

docs/development/DEV-CONTAINER.md

@@ -93,7 +93,7 @@ When the container starts (`scripts/dev-entrypoint.sh`):
 
 PM2 manages three processes in the dev container:
 
-```
+```text
 +--------------------+     +------------------------+     +--------------------+
 |  flyer-crawler-    |     |  flyer-crawler-        |     |  flyer-crawler-    |
 |  api-dev           |     |  worker-dev            |     |  vite-dev          |
@@ -404,5 +404,5 @@ podman exec -it flyer-crawler-dev pm2 restart flyer-crawler-api-dev
 - [DEBUGGING.md](DEBUGGING.md) - Debugging strategies
 - [LOGSTASH-QUICK-REF.md](../operations/LOGSTASH-QUICK-REF.md) - Logstash quick reference
 - [DEV-CONTAINER-BUGSINK.md](../DEV-CONTAINER-BUGSINK.md) - Bugsink setup in dev container
-- [ADR-014](../adr/0014-linux-only-platform.md) - Linux-only platform decision
-- [ADR-050](../adr/0050-postgresql-function-observability.md) - PostgreSQL function observability
+- [ADR-014](../adr/0014-containerization-and-deployment-strategy.md) - Containerization and deployment strategy
+- [ADR-050](../adr/0050-postgresql-function-observability.md) - PostgreSQL function observability (includes log aggregation)

docs/development/TESTING.md

@@ -1,5 +1,19 @@
 # Testing Guide
 
+## Quick Reference
+
+| Command                                                      | Purpose                      |
+| ------------------------------------------------------------ | ---------------------------- |
+| `podman exec -it flyer-crawler-dev npm test`                 | Run all tests                |
+| `podman exec -it flyer-crawler-dev npm run test:unit`        | Unit tests (~2900)           |
+| `podman exec -it flyer-crawler-dev npm run test:integration` | Integration tests (28 files) |
+| `podman exec -it flyer-crawler-dev npm run test:e2e`         | E2E tests (11 files)         |
+| `podman exec -it flyer-crawler-dev npm run type-check`       | TypeScript check             |
+
+**Critical**: Always run tests in the dev container. Windows results are unreliable.
+
+---
+
 ## Overview
 
 This project has comprehensive test coverage including unit tests, integration tests, and E2E tests. All tests must be run in the **Linux dev container environment** for reliable results.
@@ -76,7 +90,7 @@ To verify type-check is working correctly:
 
 Example error output:
 
-```
+```text
 src/pages/MyDealsPage.tsx:68:31 - error TS2339: Property 'store_name' does not exist on type 'WatchedItemDeal'.
 
 68                   <span>{deal.store_name}</span>
@@ -113,15 +127,26 @@ Located throughout `src/` directory alongside source files with `.test.ts` or `.
 npm run test:unit
 ```
 
-### Integration Tests (5 test files)
+### Integration Tests (28 test files)
 
-Located in `src/tests/integration/`:
+Located in `src/tests/integration/`. Key test files include:
 
-- `admin.integration.test.ts`
-- `flyer.integration.test.ts`
-- `price.integration.test.ts`
-- `public.routes.integration.test.ts`
-- `receipt.integration.test.ts`
+| Test File                              | Domain                     |
+| -------------------------------------- | -------------------------- |
+| `admin.integration.test.ts`            | Admin dashboard operations |
+| `auth.integration.test.ts`             | Authentication flows       |
+| `budget.integration.test.ts`           | Budget management          |
+| `flyer.integration.test.ts`            | Flyer CRUD operations      |
+| `flyer-processing.integration.test.ts` | AI flyer processing        |
+| `gamification.integration.test.ts`     | Achievements and points    |
+| `inventory.integration.test.ts`        | Inventory management       |
+| `notification.integration.test.ts`     | User notifications         |
+| `receipt.integration.test.ts`          | Receipt processing         |
+| `recipe.integration.test.ts`           | Recipe management          |
+| `shopping-list.integration.test.ts`    | Shopping list operations   |
+| `user.integration.test.ts`             | User profile operations    |
+
+See `src/tests/integration/` for the complete list.
 
 Requires PostgreSQL and Redis services running.
 
@@ -129,13 +154,23 @@ Requires PostgreSQL and Redis services running.
 npm run test:integration
 ```
 
-### E2E Tests (3 test files)
+### E2E Tests (11 test files)
 
-Located in `src/tests/e2e/`:
+Located in `src/tests/e2e/`. Full user journey tests:
 
-- `deals-journey.e2e.test.ts`
-- `budget-journey.e2e.test.ts`
-- `receipt-journey.e2e.test.ts`
+| Test File                         | Journey                       |
+| --------------------------------- | ----------------------------- |
+| `admin-authorization.e2e.test.ts` | Admin access control          |
+| `admin-dashboard.e2e.test.ts`     | Admin dashboard flows         |
+| `auth.e2e.test.ts`                | Login/logout/registration     |
+| `budget-journey.e2e.test.ts`      | Budget tracking workflow      |
+| `deals-journey.e2e.test.ts`       | Finding and saving deals      |
+| `error-reporting.e2e.test.ts`     | Error handling verification   |
+| `flyer-upload.e2e.test.ts`        | Flyer upload and processing   |
+| `inventory-journey.e2e.test.ts`   | Pantry management             |
+| `receipt-journey.e2e.test.ts`     | Receipt scanning and tracking |
+| `upc-journey.e2e.test.ts`         | UPC barcode scanning          |
+| `user-journey.e2e.test.ts`        | User profile management       |
 
 Requires all services (PostgreSQL, Redis, BullMQ workers) running.
 
@@ -157,20 +192,18 @@ Located in `src/tests/utils/storeHelpers.ts`:
 
 ```typescript
 // Create a store with a location in one call
-const store = await createStoreWithLocation({
-  storeName: 'Test Store',
-  address: {
-    address_line_1: '123 Main St',
-    city: 'Toronto',
-    province_state: 'ON',
-    postal_code: 'M1M 1M1',
-  },
-  pool,
-  log,
+const store = await createStoreWithLocation(pool, {
+  name: 'Test Store',
+  address: '123 Main St',
+  city: 'Toronto',
+  province: 'ON',
+  postalCode: 'M1M 1M1',
 });
 
+// Returns: { storeId, addressId, storeLocationId }
+
 // Cleanup stores and their locations
-await cleanupStoreLocations([storeId1, storeId2], pool, log);
+await cleanupStoreLocation(pool, store);
 ```
 
 ### Mock Factories

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

@@ -2,134 +2,259 @@
 
 Complete guide to environment variables used in Flyer Crawler.
 
+---
+
+## Quick Reference
+
+### Minimum Required Variables (Development)
+
+| Variable         | Example                  | Purpose              |
+| ---------------- | ------------------------ | -------------------- |
+| `DB_HOST`        | `localhost`              | PostgreSQL host      |
+| `DB_USER`        | `postgres`               | PostgreSQL username  |
+| `DB_PASSWORD`    | `postgres`               | PostgreSQL password  |
+| `DB_NAME`        | `flyer_crawler_dev`      | Database name        |
+| `REDIS_URL`      | `redis://localhost:6379` | Redis connection URL |
+| `JWT_SECRET`     | (32+ character string)   | JWT signing key      |
+| `GEMINI_API_KEY` | `AIzaSy...`              | Google Gemini API    |
+
+### Source of Truth
+
+The Zod schema at `src/config/env.ts` is the authoritative source for all environment variables. If a variable is not in this file, it is not used by the application.
+
+---
+
 ## Configuration by Environment
 
 ### Production
 
-**Location**: Gitea CI/CD secrets injected during deployment
-**Path**: `/var/www/flyer-crawler.projectium.com/`
-**Note**: No `.env` file exists - all variables come from CI/CD
+| Aspect   | Details                                    |
+| -------- | ------------------------------------------ |
+| Location | Gitea CI/CD secrets injected at deployment |
+| Path     | `/var/www/flyer-crawler.projectium.com/`   |
+| File     | No `.env` file - all from CI/CD secrets    |
 
 ### Test
 
-**Location**: Gitea CI/CD secrets + `.env.test` file
-**Path**: `/var/www/flyer-crawler-test.projectium.com/`
-**Note**: `.env.test` overrides for test-specific values
+| Aspect   | Details                                       |
+| -------- | --------------------------------------------- |
+| Location | Gitea CI/CD secrets + `.env.test` overrides   |
+| Path     | `/var/www/flyer-crawler-test.projectium.com/` |
+| File     | `.env.test` for test-specific values          |
 
 ### Development Container
 
-**Location**: `.env.local` file in project root
-**Note**: Overrides default DSNs in `compose.dev.yml`
+| Aspect   | Details                                 |
+| -------- | --------------------------------------- |
+| Location | `.env.local` file in project root       |
+| Priority | Overrides defaults in `compose.dev.yml` |
+| File     | `.env.local` (gitignored)               |
 
-## Required Variables
+---
 
-### Database
+## Complete Variable Reference
 
-| Variable           | Description                  | Example                                    |
-| ------------------ | ---------------------------- | ------------------------------------------ |
-| `DB_HOST`          | PostgreSQL host              | `localhost` (dev), `projectium.com` (prod) |
-| `DB_PORT`          | PostgreSQL port              | `5432`                                     |
-| `DB_USER_PROD`     | Production database user     | `flyer_crawler_prod`                       |
-| `DB_PASSWORD_PROD` | Production database password | (secret)                                   |
-| `DB_DATABASE_PROD` | Production database name     | `flyer-crawler-prod`                       |
-| `DB_USER_TEST`     | Test database user           | `flyer_crawler_test`                       |
-| `DB_PASSWORD_TEST` | Test database password       | (secret)                                   |
-| `DB_DATABASE_TEST` | Test database name           | `flyer-crawler-test`                       |
-| `DB_USER`          | Dev database user            | `postgres`                                 |
-| `DB_PASSWORD`      | Dev database password        | `postgres`                                 |
-| `DB_NAME`          | Dev database name            | `flyer_crawler_dev`                        |
+### Database Configuration
 
-**Note**: Production and test use separate `_PROD` and `_TEST` suffixed variables. Development uses unsuffixed variables.
+| Variable      | Required | Default | Description       |
+| ------------- | -------- | ------- | ----------------- |
+| `DB_HOST`     | Yes      | -       | PostgreSQL host   |
+| `DB_PORT`     | No       | `5432`  | PostgreSQL port   |
+| `DB_USER`     | Yes      | -       | Database username |
+| `DB_PASSWORD` | Yes      | -       | Database password |
+| `DB_NAME`     | Yes      | -       | Database name     |
 
-### Redis
+**Environment-Specific Variables** (Gitea Secrets):
 
-| Variable              | Description               | Example                        |
-| --------------------- | ------------------------- | ------------------------------ |
-| `REDIS_URL`           | Redis connection URL      | `redis://localhost:6379` (dev) |
-| `REDIS_PASSWORD_PROD` | Production Redis password | (secret)                       |
-| `REDIS_PASSWORD_TEST` | Test Redis password       | (secret)                       |
+| Variable           | Environment | Description              |
+| ------------------ | ----------- | ------------------------ |
+| `DB_USER_PROD`     | Production  | Production database user |
+| `DB_PASSWORD_PROD` | Production  | Production database pass |
+| `DB_DATABASE_PROD` | Production  | Production database name |
+| `DB_USER_TEST`     | Test        | Test database user       |
+| `DB_PASSWORD_TEST` | Test        | Test database password   |
+| `DB_DATABASE_TEST` | Test        | Test database name       |
+
+### Redis Configuration
+
+| Variable         | Required | Default | Description               |
+| ---------------- | -------- | ------- | ------------------------- |
+| `REDIS_URL`      | Yes      | -       | Redis connection URL      |
+| `REDIS_PASSWORD` | No       | -       | Redis password (optional) |
+
+**URL Format**: `redis://[user:password@]host:port`
+
+**Examples**:
+
+```bash
+# Development (no auth)
+REDIS_URL=redis://localhost:6379
+
+# Production (with auth)
+REDIS_URL=redis://:${REDIS_PASSWORD_PROD}@localhost:6379
+```
 
 ### Authentication
 
-| Variable               | Description                | Example                          |
-| ---------------------- | -------------------------- | -------------------------------- |
-| `JWT_SECRET`           | JWT token signing key      | (minimum 32 characters)          |
-| `SESSION_SECRET`       | Session encryption key     | (minimum 32 characters)          |
-| `GOOGLE_CLIENT_ID`     | Google OAuth client ID     | `xxx.apps.googleusercontent.com` |
-| `GOOGLE_CLIENT_SECRET` | Google OAuth client secret | (secret)                         |
-| `GH_CLIENT_ID`         | GitHub OAuth client ID     | `xxx`                            |
-| `GH_CLIENT_SECRET`     | GitHub OAuth client secret | (secret)                         |
+| Variable               | Required | Min Length | Description             |
+| ---------------------- | -------- | ---------- | ----------------------- |
+| `JWT_SECRET`           | Yes      | 32 chars   | JWT token signing key   |
+| `JWT_SECRET_PREVIOUS`  | No       | -          | Previous key (rotation) |
+| `GOOGLE_CLIENT_ID`     | No       | -          | Google OAuth client ID  |
+| `GOOGLE_CLIENT_SECRET` | No       | -          | Google OAuth secret     |
+| `GITHUB_CLIENT_ID`     | No       | -          | GitHub OAuth client ID  |
+| `GITHUB_CLIENT_SECRET` | No       | -          | GitHub OAuth secret     |
+
+**Generate Secure Secret**:
+
+```bash
+node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
+```
 
 ### AI Services
 
-| Variable                         | Description                  | Example     |
-| -------------------------------- | ---------------------------- | ----------- |
-| `VITE_GOOGLE_GENAI_API_KEY`      | Google Gemini API key (prod) | `AIzaSy...` |
-| `VITE_GOOGLE_GENAI_API_KEY_TEST` | Google Gemini API key (test) | `AIzaSy...` |
-| `GOOGLE_MAPS_API_KEY`            | Google Maps Geocoding API    | `AIzaSy...` |
+| Variable                     | Required | Description                      |
+| ---------------------------- | -------- | -------------------------------- |
+| `GEMINI_API_KEY`             | Yes\*    | Google Gemini API key            |
+| `GEMINI_RPM`                 | No       | Rate limit (default: 5)          |
+| `AI_PRICE_QUALITY_THRESHOLD` | No       | Quality threshold (default: 0.5) |
 
-### Application
+\*Required for flyer processing. Application works without it but cannot extract flyer data.
 
-| Variable       | Description              | Example                             |
-| -------------- | ------------------------ | ----------------------------------- |
-| `NODE_ENV`     | Environment mode         | `development`, `test`, `production` |
-| `PORT`         | Backend server port      | `3001`                              |
-| `FRONTEND_URL` | Frontend application URL | `http://localhost:5173` (dev)       |
+**Get API Key**: [Google AI Studio](https://aistudio.google.com/app/apikey)
 
-### Error Tracking
+### Google Services
 
-| Variable               | Description                      | Example                     |
-| ---------------------- | -------------------------------- | --------------------------- |
-| `SENTRY_DSN`           | Sentry DSN (production)          | `https://xxx@sentry.io/xxx` |
-| `VITE_SENTRY_DSN`      | Frontend Sentry DSN (production) | `https://xxx@sentry.io/xxx` |
-| `SENTRY_DSN_TEST`      | Sentry DSN (test)                | `https://xxx@sentry.io/xxx` |
-| `VITE_SENTRY_DSN_TEST` | Frontend Sentry DSN (test)       | `https://xxx@sentry.io/xxx` |
-| `SENTRY_AUTH_TOKEN`    | Sentry API token for releases    | (secret)                    |
+| Variable               | Required | Description                      |
+| ---------------------- | -------- | -------------------------------- |
+| `GOOGLE_MAPS_API_KEY`  | No       | Google Maps Geocoding API        |
+| `GOOGLE_CLIENT_ID`     | No       | OAuth (see Authentication above) |
+| `GOOGLE_CLIENT_SECRET` | No       | OAuth (see Authentication above) |
 
-## Optional Variables
+### UPC Lookup APIs
 
-| Variable            | Description             | Default           |
-| ------------------- | ----------------------- | ----------------- |
-| `LOG_LEVEL`         | Logging verbosity       | `info`            |
-| `REDIS_TTL`         | Cache TTL in seconds    | `3600`            |
-| `MAX_UPLOAD_SIZE`   | Max file upload size    | `10mb`            |
-| `RATE_LIMIT_WINDOW` | Rate limit window (ms)  | `900000` (15 min) |
-| `RATE_LIMIT_MAX`    | Max requests per window | `100`             |
+| Variable                 | Required | Description            |
+| ------------------------ | -------- | ---------------------- |
+| `UPC_ITEM_DB_API_KEY`    | No       | UPC Item DB API key    |
+| `BARCODE_LOOKUP_API_KEY` | No       | Barcode Lookup API key |
+
+### Application Settings
+
+| Variable       | Required | Default       | Description              |
+| -------------- | -------- | ------------- | ------------------------ |
+| `NODE_ENV`     | No       | `development` | Environment mode         |
+| `PORT`         | No       | `3001`        | Backend server port      |
+| `FRONTEND_URL` | No       | -             | Frontend URL (CORS)      |
+| `BASE_URL`     | No       | -             | API base URL             |
+| `STORAGE_PATH` | No       | (see below)   | Flyer image storage path |
+
+**NODE_ENV Values**: `development`, `test`, `staging`, `production`
+
+**Default STORAGE_PATH**: `/var/www/flyer-crawler.projectium.com/flyer-images`
+
+### Email/SMTP Configuration
+
+| Variable          | Required | Default | Description             |
+| ----------------- | -------- | ------- | ----------------------- |
+| `SMTP_HOST`       | No       | -       | SMTP server hostname    |
+| `SMTP_PORT`       | No       | `587`   | SMTP server port        |
+| `SMTP_USER`       | No       | -       | SMTP username           |
+| `SMTP_PASS`       | No       | -       | SMTP password           |
+| `SMTP_SECURE`     | No       | `false` | Use TLS                 |
+| `SMTP_FROM_EMAIL` | No       | -       | From address for emails |
+
+**Note**: Email functionality degrades gracefully if not configured.
+
+### Worker Configuration
+
+| Variable                              | Default | Description                  |
+| ------------------------------------- | ------- | ---------------------------- |
+| `WORKER_CONCURRENCY`                  | `1`     | Main worker concurrency      |
+| `WORKER_LOCK_DURATION`                | `30000` | Lock duration (ms)           |
+| `EMAIL_WORKER_CONCURRENCY`            | `10`    | Email worker concurrency     |
+| `ANALYTICS_WORKER_CONCURRENCY`        | `1`     | Analytics worker concurrency |
+| `CLEANUP_WORKER_CONCURRENCY`          | `10`    | Cleanup worker concurrency   |
+| `WEEKLY_ANALYTICS_WORKER_CONCURRENCY` | `1`     | Weekly analytics concurrency |
+
+### Error Tracking (Bugsink/Sentry)
+
+| Variable              | Required | Default  | Description                     |
+| --------------------- | -------- | -------- | ------------------------------- |
+| `SENTRY_DSN`          | No       | -        | Backend Sentry DSN              |
+| `SENTRY_ENABLED`      | No       | `true`   | Enable error tracking           |
+| `SENTRY_ENVIRONMENT`  | No       | NODE_ENV | Environment name for errors     |
+| `SENTRY_DEBUG`        | No       | `false`  | Enable Sentry SDK debug logging |
+| `VITE_SENTRY_DSN`     | No       | -        | Frontend Sentry DSN             |
+| `VITE_SENTRY_ENABLED` | No       | `true`   | Enable frontend error tracking  |
+| `VITE_SENTRY_DEBUG`   | No       | `false`  | Frontend SDK debug logging      |
+
+**DSN Format**: `http://[key]@[host]:[port]/[project_id]`
+
+**Dev Container DSNs**:
+
+```bash
+# Backend (internal)
+SENTRY_DSN=http://<key>@localhost:8000/1
+
+# Frontend (via nginx proxy)
+VITE_SENTRY_DSN=https://<key>@localhost/bugsink-api/2
+```
+
+---
 
 ## Configuration Files
 
 | File                                  | Purpose                                     |
 | ------------------------------------- | ------------------------------------------- |
 | `src/config/env.ts`                   | Zod schema validation - **source of truth** |
-| `ecosystem.config.cjs`                | PM2 process manager config                  |
+| `ecosystem.config.cjs`                | PM2 process manager (production)            |
+| `ecosystem.dev.config.cjs`            | PM2 process manager (development)           |
 | `.gitea/workflows/deploy-to-prod.yml` | Production deployment workflow              |
 | `.gitea/workflows/deploy-to-test.yml` | Test deployment workflow                    |
 | `.env.example`                        | Template with all variables                 |
 | `.env.local`                          | Dev container overrides (not in git)        |
 | `.env.test`                           | Test environment overrides (not in git)     |
 
+---
+
 ## Adding New Variables
 
-### 1. Update Zod Schema
+### Checklist
+
+1. [ ] **Update Zod Schema** - Edit `src/config/env.ts`
+2. [ ] **Add to Gitea Secrets** - For prod/test environments
+3. [ ] **Update Deployment Workflows** - `.gitea/workflows/*.yml`
+4. [ ] **Update PM2 Config** - `ecosystem.config.cjs`
+5. [ ] **Update .env.example** - Template for developers
+6. [ ] **Update this document** - Add to appropriate section
+
+### Step-by-Step
+
+#### 1. Update Zod Schema
 
 Edit `src/config/env.ts`:
 
 ```typescript
 const envSchema = z.object({
   // ... existing variables ...
-  NEW_VARIABLE: z.string().min(1),
+  newSection: z.object({
+    newVariable: z.string().min(1, 'NEW_VARIABLE is required'),
+  }),
 });
+
+// In loadEnvVars():
+newSection: {
+  newVariable: process.env.NEW_VARIABLE,
+},
 ```
 
-### 2. Add to Gitea Secrets
-
-For prod/test environments:
+#### 2. Add to Gitea Secrets
 
 1. Go to Gitea repository Settings > Secrets
-2. Add `NEW_VARIABLE` with value
+2. Add `NEW_VARIABLE` with production value
 3. Add `NEW_VARIABLE_TEST` if test needs different value
 
-### 3. Update Deployment Workflows
+#### 3. Update Deployment Workflows
 
 Edit `.gitea/workflows/deploy-to-prod.yml`:
 
@@ -145,7 +270,7 @@ env:
   NEW_VARIABLE: ${{ secrets.NEW_VARIABLE_TEST }}
 ```
 
-### 4. Update PM2 Config
+#### 4. Update PM2 Config
 
 Edit `ecosystem.config.cjs`:
 
@@ -161,31 +286,36 @@ module.exports = {
 };
 ```
 
-### 5. Update Documentation
-
-- Add to `.env.example`
-- Update this document
-- Document in relevant feature docs
+---
 
 ## Security Best Practices
 
-### Secrets Management
+### Do
 
-- **NEVER** commit secrets to git
 - Use Gitea Secrets for prod/test
 - Use `.env.local` for dev (gitignored)
+- Generate secrets with cryptographic randomness
 - Rotate secrets regularly
+- Use environment-specific database users
+
+### Do Not
+
+- Commit secrets to git
+- Use short or predictable secrets
+- Share secrets across environments
+- Log sensitive values
 
 ### Secret Generation
 
 ```bash
-# Generate secure random secrets
+# Generate secure random secrets (64 hex characters)
 node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
+
+# Example output:
+# a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2
 ```
 
-### Database Users
-
-Each environment has its own PostgreSQL user:
+### Database Users by Environment
 
 | Environment | User                 | Database             |
 | ----------- | -------------------- | -------------------- |
@@ -193,44 +323,61 @@ Each environment has its own PostgreSQL user:
 | Test        | `flyer_crawler_test` | `flyer-crawler-test` |
 | Development | `postgres`           | `flyer_crawler_dev`  |
 
-**Setup Commands** (as postgres superuser):
-
-```sql
--- Production
-CREATE DATABASE "flyer-crawler-prod";
-CREATE USER flyer_crawler_prod WITH PASSWORD 'secure-password';
-ALTER DATABASE "flyer-crawler-prod" OWNER TO flyer_crawler_prod;
-\c "flyer-crawler-prod"
-ALTER SCHEMA public OWNER TO flyer_crawler_prod;
-GRANT CREATE, USAGE ON SCHEMA public TO flyer_crawler_prod;
-CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
-CREATE EXTENSION IF NOT EXISTS postgis;
-CREATE EXTENSION IF NOT EXISTS pg_trgm;
-
--- Test (similar commands with _test suffix)
-```
+---
 
 ## Validation
 
-Environment variables are validated at startup via `src/config/env.ts`. If validation fails:
+Environment variables are validated at startup via `src/config/env.ts`.
 
-1. Check the error message for missing/invalid variables
-2. Verify `.env.local` (dev) or Gitea Secrets (prod/test)
-3. Ensure values match schema requirements (min length, format, etc.)
+### Startup Validation
+
+If validation fails, you will see:
+
+```text
+╔════════════════════════════════════════════════════════════════╗
+║           CONFIGURATION ERROR - APPLICATION STARTUP            ║
+╚════════════════════════════════════════════════════════════════╝
+
+The following environment variables are missing or invalid:
+
+  - database.host: DB_HOST is required
+  - auth.jwtSecret: JWT_SECRET must be at least 32 characters
+
+Please check your .env file or environment configuration.
+```
+
+### Debugging Configuration
+
+```bash
+# Check what variables are set (dev container)
+podman exec flyer-crawler-dev env | grep -E "^(DB_|REDIS_|JWT_|SENTRY_)"
+
+# Test database connection
+podman exec flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev -c "SELECT 1;"
+
+# Test Redis connection
+podman exec flyer-crawler-redis redis-cli ping
+```
+
+---
 
 ## Troubleshooting
 
 ### Variable Not Found
 
-```
+```text
 Error: Missing required environment variable: JWT_SECRET
 ```
 
-**Solution**: Add the variable to your environment configuration.
+**Solutions**:
+
+1. Check `.env.local` exists and has the variable
+2. Verify variable name matches schema exactly
+3. Restart the application after changes
 
 ### Invalid Value
 
-```
+```text
 Error: JWT_SECRET must be at least 32 characters
 ```
 
@@ -240,32 +387,36 @@ Error: JWT_SECRET must be at least 32 characters
 
 Check `NODE_ENV` is set correctly:
 
-- `development` - Local dev container
-- `test` - CI/CD test server
-- `production` - Production server
+| Value         | Purpose                |
+| ------------- | ---------------------- |
+| `development` | Local dev container    |
+| `test`        | CI/CD test server      |
+| `staging`     | Pre-production testing |
+| `production`  | Production server      |
 
 ### Database Connection Issues
 
-Verify database credentials:
-
 ```bash
 # Development
 podman exec flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev -c "SELECT 1;"
 
-# Production (via SSH)
-ssh root@projectium.com "psql -U flyer_crawler_prod -d flyer-crawler-prod -c 'SELECT 1;'"
+# If connection fails, check:
+# 1. Container is running: podman ps
+# 2. DB_HOST matches container network
+# 3. DB_PASSWORD is correct
 ```
 
-## Reference
+---
 
-- **Validation Schema**: [src/config/env.ts](../../src/config/env.ts)
-- **Template**: [.env.example](../../.env.example)
-- **Deployment Workflows**: [.gitea/workflows/](../../.gitea/workflows/)
-- **PM2 Config**: [ecosystem.config.cjs](../../ecosystem.config.cjs)
-
-## See Also
+## Related Documentation
 
 - [QUICKSTART.md](QUICKSTART.md) - Quick setup guide
 - [INSTALL.md](INSTALL.md) - Detailed installation
+- [DEV-CONTAINER.md](../development/DEV-CONTAINER.md) - Dev container setup
 - [DEPLOYMENT.md](../operations/DEPLOYMENT.md) - Production deployment
 - [AUTHENTICATION.md](../architecture/AUTHENTICATION.md) - OAuth setup
+- [ADR-007](../adr/0007-configuration-and-secrets-management.md) - Configuration decisions
+
+---
+
+Last updated: January 2026

docs/getting-started/INSTALL.md

@@ -1,203 +1,453 @@
 # Installation Guide
 
-This guide covers setting up a local development environment for Flyer Crawler.
+Complete setup instructions for the Flyer Crawler local development environment.
+
+---
+
+## Quick Reference
+
+| Setup Method      | Best For                    | Time   | Document Section                                    |
+| ----------------- | --------------------------- | ------ | --------------------------------------------------- |
+| Quick Start       | Already have Postgres/Redis | 5 min  | [Quick Start](#quick-start)                         |
+| Dev Container     | Full production-like setup  | 15 min | [Dev Container](#development-container-recommended) |
+| Manual Containers | Learning the components     | 20 min | [Podman Setup](#podman-setup-manual)                |
+
+---
 
 ## Prerequisites
 
-- Node.js 20.x or later
-- Access to a PostgreSQL database (local or remote)
-- Redis instance (for session management)
-- Google Gemini API key
-- Google Maps API key (for geocoding)
+### Required Software
+
+| Software       | Minimum Version | Purpose              | Download                                        |
+| -------------- | --------------- | -------------------- | ----------------------------------------------- |
+| Node.js        | 20.x            | Runtime              | [nodejs.org](https://nodejs.org/)               |
+| Podman Desktop | 4.x             | Container management | [podman-desktop.io](https://podman-desktop.io/) |
+| Git            | 2.x             | Version control      | [git-scm.com](https://git-scm.com/)             |
+
+### Windows-Specific Requirements
+
+| Requirement | Purpose                        | Setup Command                      |
+| ----------- | ------------------------------ | ---------------------------------- |
+| WSL 2       | Linux compatibility for Podman | `wsl --install` (admin PowerShell) |
+
+### Verify Installation
+
+```bash
+# Check all prerequisites
+node --version      # Expected: v20.x or higher
+podman --version    # Expected: podman version 4.x or higher
+git --version       # Expected: git version 2.x or higher
+wsl --list -v       # Expected: Shows WSL 2 distro
+```
+
+---
 
 ## Quick Start
 
-If you already have PostgreSQL and Redis configured:
+If you already have PostgreSQL and Redis configured externally:
 
 ```bash
-# Install dependencies
+# 1. Clone the repository
+git clone https://gitea.projectium.com/flyer-crawler/flyer-crawler.git
+cd flyer-crawler
+
+# 2. Install dependencies
 npm install
 
-# Run in development mode
+# 3. Create .env.local (see Environment section below)
+
+# 4. Run in development mode
 npm run dev
 ```
 
+**Access Points**:
+
+- Frontend: `http://localhost:5173`
+- Backend API: `http://localhost:3001`
+
 ---
 
-## Development Environment with Podman (Recommended for Windows)
+## Development Container (Recommended)
 
-This approach uses Podman with an Ubuntu container for a consistent development environment.
+The dev container provides a complete, production-like environment.
+
+### What's Included
+
+| Service    | Purpose                  | Port       |
+| ---------- | ------------------------ | ---------- |
+| Node.js    | API server, worker, Vite | 3001, 5173 |
+| PostgreSQL | Database with PostGIS    | 5432       |
+| Redis      | Cache and job queues     | 6379       |
+| NGINX      | HTTPS reverse proxy      | 443        |
+| Bugsink    | Error tracking           | 8443       |
+| Logstash   | Log aggregation          | -          |
+| PM2        | Process management       | -          |
+
+### Setup Steps
+
+#### Step 1: Initialize Podman
+
+```bash
+# Windows: Start Podman Desktop, or from terminal:
+podman machine init
+podman machine start
+```
+
+#### Step 2: Start Dev Container
+
+```bash
+# Start all services
+podman-compose -f compose.dev.yml up -d
+
+# View logs (optional)
+podman-compose -f compose.dev.yml logs -f
+```
+
+**Expected Output**:
+
+```text
+[+] Running 3/3
+ - Container flyer-crawler-postgres  Started
+ - Container flyer-crawler-redis     Started
+ - Container flyer-crawler-dev       Started
+```
+
+#### Step 3: Verify Services
+
+```bash
+# Check containers are running
+podman ps
+
+# Check PM2 processes
+podman exec -it flyer-crawler-dev pm2 status
+```
+
+**Expected PM2 Status**:
+
+```text
++---------------------------+--------+-------+
+| name                      | status | cpu   |
++---------------------------+--------+-------+
+| flyer-crawler-api-dev     | online | 0%    |
+| flyer-crawler-worker-dev  | online | 0%    |
+| flyer-crawler-vite-dev    | online | 0%    |
++---------------------------+--------+-------+
+```
+
+#### Step 4: Access Application
+
+| Service     | URL                      | Notes                        |
+| ----------- | ------------------------ | ---------------------------- |
+| Frontend    | `https://localhost`      | NGINX proxies to Vite        |
+| Backend API | `http://localhost:3001`  | Express server               |
+| Bugsink     | `https://localhost:8443` | Login: admin@localhost/admin |
+
+### SSL Certificate Setup (Optional but Recommended)
+
+To eliminate browser security warnings:
+
+**Windows**:
+
+1. Double-click `certs/mkcert-ca.crt`
+2. Click "Install Certificate..."
+3. Select "Local Machine" > Next
+4. Select "Place all certificates in the following store"
+5. Browse > Select "Trusted Root Certification Authorities" > OK
+6. Click Next > Finish
+7. Restart browser
+
+**Other Platforms**: See [`certs/README.md`](../../certs/README.md)
+
+### Managing the Dev Container
+
+| Action    | Command                                     |
+| --------- | ------------------------------------------- |
+| Start     | `podman-compose -f compose.dev.yml up -d`   |
+| Stop      | `podman-compose -f compose.dev.yml down`    |
+| View logs | `podman-compose -f compose.dev.yml logs -f` |
+| Restart   | `podman-compose -f compose.dev.yml restart` |
+| Rebuild   | `podman-compose -f compose.dev.yml build`   |
+
+---
+
+## Podman Setup (Manual)
+
+For understanding the individual components or custom configurations.
 
 ### Step 1: Install Prerequisites on Windows
 
-1. **Install WSL 2**: Podman on Windows relies on the Windows Subsystem for Linux.
+```powershell
+# Run in administrator PowerShell
+wsl --install
+```
 
-   ```powershell
-   wsl --install
-   ```
+Restart computer after WSL installation.
 
-   Run this in an administrator PowerShell.
+### Step 2: Initialize Podman
 
-2. **Install Podman Desktop**: Download and install [Podman Desktop for Windows](https://podman-desktop.io/).
+1. Launch **Podman Desktop**
+2. Follow the setup wizard to initialize Podman machine
+3. Start the Podman machine
 
-### Step 2: Set Up Podman
-
-1. **Initialize Podman**: Launch Podman Desktop. It will automatically set up its WSL 2 machine.
-2. **Start Podman**: Ensure the Podman machine is running from the Podman Desktop interface.
-
-### Step 3: Set Up the Ubuntu Container
-
-1. **Pull Ubuntu Image**:
-
-   ```bash
-   podman pull ubuntu:latest
-   ```
-
-2. **Create a Podman Volume** (persists node_modules between container restarts):
-
-   ```bash
-   podman volume create node_modules_cache
-   ```
-
-3. **Run the Ubuntu Container**:
-
-   Open a terminal in your project's root directory and run:
-
-   ```bash
-   podman run -it -p 3001:3001 -p 5173:5173 --name flyer-dev \
-     -v "$(pwd):/app" \
-     -v "node_modules_cache:/app/node_modules" \
-     ubuntu:latest
-   ```
-
-   | Flag                                        | Purpose                                          |
-   | ------------------------------------------- | ------------------------------------------------ |
-   | `-p 3001:3001`                              | Forwards the backend server port                 |
-   | `-p 5173:5173`                              | Forwards the Vite frontend server port           |
-   | `--name flyer-dev`                          | Names the container for easy reference           |
-   | `-v "...:/app"`                             | Mounts your project directory into the container |
-   | `-v "node_modules_cache:/app/node_modules"` | Mounts the named volume for node_modules         |
-
-### Step 4: Configure the Ubuntu Environment
-
-You are now inside the Ubuntu container's shell.
-
-1. **Update Package Lists**:
-
-   ```bash
-   apt-get update
-   ```
-
-2. **Install Dependencies**:
-
-   ```bash
-   apt-get install -y curl git
-   curl -sL https://deb.nodesource.com/setup_20.x | bash -
-   apt-get install -y nodejs
-   ```
-
-3. **Navigate to Project Directory**:
-
-   ```bash
-   cd /app
-   ```
-
-4. **Install Project Dependencies**:
-
-   ```bash
-   npm install
-   ```
-
-### Step 5: Run the Development Server
+Or from terminal:
 
 ```bash
+podman machine init
+podman machine start
+```
+
+### Step 3: Create Podman Network
+
+```bash
+podman network create flyer-crawler-net
+```
+
+### Step 4: Create PostgreSQL Container
+
+```bash
+podman run -d \
+  --name flyer-crawler-postgres \
+  --network flyer-crawler-net \
+  -e POSTGRES_USER=postgres \
+  -e POSTGRES_PASSWORD=postgres \
+  -e POSTGRES_DB=flyer_crawler_dev \
+  -p 5432:5432 \
+  -v flyer-crawler-pgdata:/var/lib/postgresql/data \
+  docker.io/postgis/postgis:15-3.3
+```
+
+### Step 5: Create Redis Container
+
+```bash
+podman run -d \
+  --name flyer-crawler-redis \
+  --network flyer-crawler-net \
+  -p 6379:6379 \
+  -v flyer-crawler-redis:/data \
+  docker.io/library/redis:alpine
+```
+
+### Step 6: Initialize Database
+
+```bash
+# Wait for PostgreSQL to be ready
+podman exec flyer-crawler-postgres pg_isready -U postgres
+
+# Install required extensions
+podman exec flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev -c "
+  CREATE EXTENSION IF NOT EXISTS postgis;
+  CREATE EXTENSION IF NOT EXISTS pg_trgm;
+  CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";
+"
+
+# Apply schema
+podman exec -i flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev < sql/master_schema_rollup.sql
+```
+
+### Step 7: Create Node.js Container
+
+```bash
+# Create volume for node_modules
+podman volume create node_modules_cache
+
+# Run Ubuntu container with project mounted
+podman run -it \
+  --name flyer-dev \
+  --network flyer-crawler-net \
+  -p 3001:3001 \
+  -p 5173:5173 \
+  -v "$(pwd):/app" \
+  -v "node_modules_cache:/app/node_modules" \
+  ubuntu:latest
+```
+
+### Step 8: Configure Container Environment
+
+Inside the container:
+
+```bash
+# Update and install dependencies
+apt-get update
+apt-get install -y curl git
+
+# Install Node.js 20
+curl -sL https://deb.nodesource.com/setup_20.x | bash -
+apt-get install -y nodejs
+
+# Navigate to project and install
+cd /app
+npm install
+
+# Start development server
 npm run dev
 ```
 
-### Step 6: Access the Application
+### Container Management Commands
 
-- **Frontend**: http://localhost:5173
-- **Backend API**: http://localhost:3001
-
-### Dev Container with HTTPS (Full Stack)
-
-When using the full dev container stack with NGINX (via `compose.dev.yml`), access the application over HTTPS:
-
-- **Frontend**: https://localhost or https://127.0.0.1
-- **Backend API**: http://localhost:3001
-
-**SSL Certificate Notes:**
-
-- The dev container uses self-signed certificates generated by mkcert
-- Both `localhost` and `127.0.0.1` are valid hostnames (certificate includes both as SANs)
-- If images fail to load with SSL errors, see [FLYER-URL-CONFIGURATION.md](../FLYER-URL-CONFIGURATION.md#ssl-certificate-configuration-dev-container)
-
-**Eliminate SSL Warnings (Recommended):**
-
-To avoid browser security warnings for self-signed certificates, install the mkcert CA certificate on your system. The CA certificate is located at `certs/mkcert-ca.crt` in the project root.
-
-See [`certs/README.md`](../../certs/README.md) for platform-specific installation instructions (Windows, macOS, Linux, Firefox).
-
-After installation:
-
-- Your browser will trust all mkcert certificates without warnings
-- Both `https://localhost/` and `https://127.0.0.1/` will work without SSL errors
-- Flyer images will load without `ERR_CERT_AUTHORITY_INVALID` errors
-
-### Managing the Container
-
-| Action                | Command                          |
-| --------------------- | -------------------------------- |
-| Stop the container    | Press `Ctrl+C`, then type `exit` |
-| Restart the container | `podman start -a -i flyer-dev`   |
-| Remove the container  | `podman rm flyer-dev`            |
+| Action         | Command                        |
+| -------------- | ------------------------------ |
+| Stop container | Press `Ctrl+C`, then `exit`    |
+| Restart        | `podman start -a -i flyer-dev` |
+| Remove         | `podman rm flyer-dev`          |
+| List running   | `podman ps`                    |
+| List all       | `podman ps -a`                 |
 
 ---
 
-## Environment Variables
+## Environment Configuration
 
-This project is configured to run in a CI/CD environment and does not use `.env` files. All configuration must be provided as environment variables.
+### Create .env.local
 
-For local development, you can export these in your shell or use your IDE's environment configuration:
+Create `.env.local` in the project root with your configuration:
 
-| Variable                    | Description                           |
-| --------------------------- | ------------------------------------- |
-| `DB_HOST`                   | PostgreSQL server hostname            |
-| `DB_USER`                   | PostgreSQL username                   |
-| `DB_PASSWORD`               | PostgreSQL password                   |
-| `DB_DATABASE_PROD`          | Production database name              |
-| `JWT_SECRET`                | Secret string for signing auth tokens |
-| `VITE_GOOGLE_GENAI_API_KEY` | Google Gemini API key                 |
-| `GOOGLE_MAPS_API_KEY`       | Google Maps Geocoding API key         |
-| `REDIS_PASSWORD_PROD`       | Production Redis password             |
-| `REDIS_PASSWORD_TEST`       | Test Redis password                   |
+```bash
+# Database (adjust host based on your setup)
+DB_HOST=localhost        # Use 'postgres' if inside dev container
+DB_PORT=5432
+DB_USER=postgres
+DB_PASSWORD=postgres
+DB_NAME=flyer_crawler_dev
+
+# Redis (adjust host based on your setup)
+REDIS_URL=redis://localhost:6379  # Use 'redis://redis:6379' inside container
+
+# Application
+NODE_ENV=development
+PORT=3001
+FRONTEND_URL=http://localhost:5173
+
+# Authentication (generate secure values)
+JWT_SECRET=your-secret-at-least-32-characters-long
+
+# AI Services
+GEMINI_API_KEY=your-google-gemini-api-key
+GOOGLE_MAPS_API_KEY=your-google-maps-api-key  # Optional
+```
+
+**Generate Secure Secrets**:
+
+```bash
+node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
+```
+
+### Environment Differences
+
+| Variable    | Host Development         | Inside Dev Container |
+| ----------- | ------------------------ | -------------------- |
+| `DB_HOST`   | `localhost`              | `postgres`           |
+| `REDIS_URL` | `redis://localhost:6379` | `redis://redis:6379` |
+
+See [ENVIRONMENT.md](ENVIRONMENT.md) for complete variable reference.
 
 ---
 
 ## Seeding Development Data
 
-To create initial test accounts (`admin@example.com` and `user@example.com`) and sample data:
+Create test accounts and sample data:
 
 ```bash
 npm run seed
 ```
 
-The seed script performs the following actions:
+### What the Seed Script Does
 
-1. Rebuilds the database schema from `sql/master_schema_rollup.sql`
-2. Creates test user accounts (admin and regular user)
-3. Copies test flyer images from `src/tests/assets/` to `public/flyer-images/`
-4. Creates a sample flyer with items linked to the test images
-5. Seeds watched items and a shopping list for the test user
+1. Rebuilds database schema from `sql/master_schema_rollup.sql`
+2. Creates test user accounts:
+   - `admin@example.com` (admin user)
+   - `user@example.com` (regular user)
+3. Copies test flyer images to `public/flyer-images/`
+4. Creates sample flyer with items
+5. Seeds watched items and shopping list
 
-**Test Images**: The seed script copies `test-flyer-image.jpg` and `test-flyer-icon.png` to the `public/flyer-images/` directory, which is served by NGINX at `/flyer-images/`.
+### Test Images
 
-After running, you may need to restart your IDE's TypeScript server to pick up any generated types.
+The seed script copies these files from `src/tests/assets/`:
+
+- `test-flyer-image.jpg`
+- `test-flyer-icon.png`
+
+Images are served by NGINX at `/flyer-images/`.
+
+---
+
+## Verification Checklist
+
+After installation, verify everything works:
+
+- [ ] **Containers running**: `podman ps` shows postgres and redis
+- [ ] **Database accessible**: `podman exec flyer-crawler-postgres psql -U postgres -c "SELECT 1;"`
+- [ ] **Frontend loads**: Open `http://localhost:5173` (or `https://localhost` for dev container)
+- [ ] **API responds**: `curl http://localhost:3001/health`
+- [ ] **Tests pass**: `npm run test:unit` (or in container: `podman exec -it flyer-crawler-dev npm run test:unit`)
+- [ ] **Type check passes**: `npm run type-check`
+
+---
+
+## Troubleshooting
+
+### Podman Machine Won't Start
+
+```bash
+# Reset Podman machine
+podman machine rm
+podman machine init
+podman machine start
+```
+
+### Port Already in Use
+
+```bash
+# Find process using port
+netstat -ano | findstr :5432
+
+# Option: Use different port
+podman run -d --name flyer-crawler-postgres -p 5433:5432 ...
+# Then set DB_PORT=5433 in .env.local
+```
+
+### Database Extensions Missing
+
+```bash
+podman exec flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev -c "
+  CREATE EXTENSION IF NOT EXISTS postgis;
+  CREATE EXTENSION IF NOT EXISTS pg_trgm;
+  CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";
+"
+```
+
+### Permission Denied on Windows Paths
+
+Use `MSYS_NO_PATHCONV=1` prefix:
+
+```bash
+MSYS_NO_PATHCONV=1 podman exec flyer-crawler-dev /path/to/script.sh
+```
+
+### Tests Fail with Timezone Errors
+
+Tests must run in the dev container, not on Windows host:
+
+```bash
+# CORRECT
+podman exec -it flyer-crawler-dev npm test
+
+# INCORRECT (may fail with TZ errors)
+npm test
+```
 
 ---
 
 ## Next Steps
 
-- [Database Setup](DATABASE.md) - Set up PostgreSQL with required extensions
-- [Authentication Setup](AUTHENTICATION.md) - Configure OAuth providers
-- [Deployment Guide](DEPLOYMENT.md) - Deploy to production
+| Goal                  | Document                                               |
+| --------------------- | ------------------------------------------------------ |
+| Quick setup guide     | [QUICKSTART.md](QUICKSTART.md)                         |
+| Environment variables | [ENVIRONMENT.md](ENVIRONMENT.md)                       |
+| Database schema       | [DATABASE.md](../architecture/DATABASE.md)             |
+| Authentication setup  | [AUTHENTICATION.md](../architecture/AUTHENTICATION.md) |
+| Dev container details | [DEV-CONTAINER.md](../development/DEV-CONTAINER.md)    |
+| Deployment            | [DEPLOYMENT.md](../operations/DEPLOYMENT.md)           |
+
+---
+
+Last updated: January 2026

docs/getting-started/QUICKSTART.md

@@ -2,13 +2,38 @@
 
 Get Flyer Crawler running in 5 minutes.
 
-## Prerequisites
+---
 
-- **Windows 10/11** with WSL 2
-- **Podman Desktop** installed
-- **Node.js 20+** installed
+## Prerequisites Checklist
 
-## 1. Start Containers (1 minute)
+Before starting, verify you have:
+
+- [ ] **Windows 10/11** with WSL 2 enabled
+- [ ] **Podman Desktop** installed ([download](https://podman-desktop.io/))
+- [ ] **Node.js 20+** installed
+- [ ] **Git** for cloning the repository
+
+**Verify Prerequisites**:
+
+```bash
+# Check Podman
+podman --version
+# Expected: podman version 4.x or higher
+
+# Check Node.js
+node --version
+# Expected: v20.x or higher
+
+# Check WSL
+wsl --list --verbose
+# Expected: Shows WSL 2 distro
+```
+
+---
+
+## Quick Setup (5 Steps)
+
+### Step 1: Start Containers (1 minute)
 
 ```bash
 # Start PostgreSQL and Redis
@@ -27,11 +52,18 @@ podman run -d --name flyer-crawler-redis \
   docker.io/library/redis:alpine
 ```
 
-## 2. Initialize Database (2 minutes)
+**Expected Output**:
+
+```text
+# Container IDs displayed, no errors
+```
+
+### Step 2: Initialize Database (2 minutes)
 
 ```bash
 # Wait for PostgreSQL to be ready
 podman exec flyer-crawler-postgres pg_isready -U postgres
+# Expected: localhost:5432 - accepting connections
 
 # Install extensions
 podman exec flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev \
@@ -41,7 +73,17 @@ podman exec flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev \
 podman exec -i flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev < sql/master_schema_rollup.sql
 ```
 
-## 3. Configure Environment (1 minute)
+**Expected Output**:
+
+```text
+CREATE EXTENSION
+CREATE EXTENSION
+CREATE EXTENSION
+CREATE TABLE
+... (many tables created)
+```
+
+### Step 3: Configure Environment (1 minute)
 
 Create `.env.local` in the project root:
 
@@ -61,16 +103,22 @@ NODE_ENV=development
 PORT=3001
 FRONTEND_URL=http://localhost:5173
 
-# Secrets (generate your own)
+# Secrets (generate your own - see command below)
 JWT_SECRET=your-dev-jwt-secret-at-least-32-chars-long
 SESSION_SECRET=your-dev-session-secret-at-least-32-chars-long
 
 # AI Services (get your own keys)
-VITE_GOOGLE_GENAI_API_KEY=your-google-genai-api-key
+GEMINI_API_KEY=your-google-gemini-api-key
 GOOGLE_MAPS_API_KEY=your-google-maps-api-key
 ```
 
-## 4. Install & Run (1 minute)
+**Generate Secure Secrets**:
+
+```bash
+node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
+```
+
+### Step 4: Install and Run (1 minute)
 
 ```bash
 # Install dependencies (first time only)
@@ -80,35 +128,61 @@ npm install
 npm run dev
 ```
 
-## 5. Access Application
+**Expected Output**:
 
-- **Frontend**: http://localhost:5173
-- **Backend API**: http://localhost:3001
-- **Health Check**: http://localhost:3001/health
+```text
+> flyer-crawler@x.x.x dev
+> concurrently ...
 
-### Dev Container (HTTPS)
+[API] Server listening on port 3001
+[Vite] VITE ready at http://localhost:5173
+```
 
-When using the full dev container with NGINX, access via HTTPS:
+### Step 5: Verify Installation
 
-- **Frontend**: https://localhost or https://127.0.0.1
-- **Backend API**: http://localhost:3001
-- **Bugsink**: `https://localhost:8443` (error tracking)
+| Check       | URL/Command                    | Expected Result                     |
+| ----------- | ------------------------------ | ----------------------------------- |
+| Frontend    | `http://localhost:5173`        | Flyer Crawler app loads             |
+| Backend API | `http://localhost:3001/health` | `{ "status": "ok", ... }`           |
+| Database    | `podman exec ... psql -c ...`  | `SELECT version()` returns Postgres |
+| Containers  | `podman ps`                    | Shows postgres and redis running    |
 
-**Note:** The dev container accepts both `localhost` and `127.0.0.1` for HTTPS connections. The self-signed certificate is valid for both hostnames.
+---
 
-**SSL Certificate Warnings:** To eliminate browser security warnings for self-signed certificates, install the mkcert CA certificate. See [`certs/README.md`](../../certs/README.md) for platform-specific installation instructions. This is optional but recommended for a better development experience.
+## Full Dev Container (Recommended)
 
-### Dev Container Architecture
+For a production-like environment with NGINX, Bugsink error tracking, and PM2 process management:
 
-The dev container uses PM2 for process management, matching production (ADR-014):
+### Starting the Dev Container
 
-| Process                    | Description              | Port |
-| -------------------------- | ------------------------ | ---- |
-| `flyer-crawler-api-dev`    | API server (tsx watch)   | 3001 |
-| `flyer-crawler-worker-dev` | Background job worker    | -    |
-| `flyer-crawler-vite-dev`   | Vite frontend dev server | 5173 |
+```bash
+# Start all services
+podman-compose -f compose.dev.yml up -d
 
-**PM2 Commands** (run inside container):
+# View logs
+podman-compose -f compose.dev.yml logs -f
+```
+
+### Access Points
+
+| Service     | URL                      | Notes                        |
+| ----------- | ------------------------ | ---------------------------- |
+| Frontend    | `https://localhost`      | NGINX proxy to Vite          |
+| Backend API | `http://localhost:3001`  | Express server               |
+| Bugsink     | `https://localhost:8443` | Error tracking (admin/admin) |
+| PostgreSQL  | `localhost:5432`         | Database                     |
+| Redis       | `localhost:6379`         | Cache                        |
+
+**SSL Certificate Setup (Recommended)**:
+
+To eliminate browser security warnings, install the mkcert CA certificate:
+
+```bash
+# Windows: Double-click certs/mkcert-ca.crt and install to Trusted Root CAs
+# See certs/README.md for detailed instructions per platform
+```
+
+### PM2 Commands
 
 ```bash
 # View process status
@@ -124,63 +198,152 @@ podman exec -it flyer-crawler-dev pm2 restart all
 podman exec -it flyer-crawler-dev pm2 restart flyer-crawler-api-dev
 ```
 
-## Verify Installation
+### Dev Container Processes
+
+| Process                    | Description              | Port |
+| -------------------------- | ------------------------ | ---- |
+| `flyer-crawler-api-dev`    | API server (tsx watch)   | 3001 |
+| `flyer-crawler-worker-dev` | Background job worker    | -    |
+| `flyer-crawler-vite-dev`   | Vite frontend dev server | 5173 |
+
+---
+
+## Verification Commands
+
+Run these to confirm everything is working:
 
 ```bash
 # Check containers are running
 podman ps
+# Expected: flyer-crawler-postgres and flyer-crawler-redis both running
 
 # Test database connection
 podman exec flyer-crawler-postgres psql -U postgres -d flyer_crawler_dev -c "SELECT version();"
+# Expected: PostgreSQL 15.x with PostGIS
 
 # Run tests (in dev container)
 podman exec -it flyer-crawler-dev npm run test:unit
+# Expected: All tests pass
+
+# Run type check
+podman exec -it flyer-crawler-dev npm run type-check
+# Expected: No type errors
 ```
 
-## Common Issues
+---
+
+## Common Issues and Solutions
 
 ### "Unable to connect to Podman socket"
 
+**Cause**: Podman machine not running
+
+**Solution**:
+
 ```bash
 podman machine start
 ```
 
 ### "Connection refused" to PostgreSQL
 
-Wait a few seconds for PostgreSQL to initialize:
+**Cause**: PostgreSQL still initializing
+
+**Solution**:
 
 ```bash
+# Wait for PostgreSQL to be ready
 podman exec flyer-crawler-postgres pg_isready -U postgres
+# Retry after "accepting connections" message
 ```
 
 ### Port 5432 or 6379 already in use
 
-Stop conflicting services or change port mappings:
+**Cause**: Another service using the port
+
+**Solution**:
 
 ```bash
-# Use different host port
+# Option 1: Stop conflicting service
+# Option 2: Use different host port
 podman run -d --name flyer-crawler-postgres -p 5433:5432 ...
+# Then update DB_PORT=5433 in .env.local
 ```
 
-Then update `DB_PORT=5433` in `.env.local`.
+### "JWT_SECRET must be at least 32 characters"
+
+**Cause**: Secret too short in .env.local
+
+**Solution**: Generate a longer secret:
+
+```bash
+node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
+```
+
+### Tests fail with "TZ environment variable" errors
+
+**Cause**: Timezone setting interfering with Node.js async hooks
+
+**Solution**: Tests must run in dev container (not Windows host):
+
+```bash
+# CORRECT - run in container
+podman exec -it flyer-crawler-dev npm test
+
+# INCORRECT - do not run on Windows host
+npm test
+```
+
+---
 
 ## Next Steps
 
-- **Read the docs**: [docs/README.md](../README.md)
-- **Understand the architecture**: [docs/architecture/DATABASE.md](../architecture/DATABASE.md)
-- **Learn testing**: [docs/development/TESTING.md](../development/TESTING.md)
-- **Explore ADRs**: [docs/adr/index.md](../adr/index.md)
-- **Contributing**: [CONTRIBUTING.md](../../CONTRIBUTING.md)
+| Goal                    | Document                                              |
+| ----------------------- | ----------------------------------------------------- |
+| Understand the codebase | [Architecture Overview](../architecture/OVERVIEW.md)  |
+| Configure environment   | [Environment Variables](ENVIRONMENT.md)               |
+| Set up MCP tools        | [MCP Configuration](../tools/MCP-CONFIGURATION.md)    |
+| Learn testing           | [Testing Guide](../development/TESTING.md)            |
+| Understand DB schema    | [Database Documentation](../architecture/DATABASE.md) |
+| Read ADRs               | [ADR Index](../adr/index.md)                          |
+| Full installation guide | [Installation Guide](INSTALL.md)                      |
 
-## Development Workflow
+---
+
+## Daily Development Workflow
 
 ```bash
-# Daily workflow
+# 1. Start containers
 podman start flyer-crawler-postgres flyer-crawler-redis
+
+# 2. Start dev server
 npm run dev
-# ... make changes ...
+
+# 3. Make changes and test
 npm test
+
+# 4. Type check before commit
+npm run type-check
+
+# 5. Commit changes
 git commit
 ```
 
-For detailed setup instructions, see [INSTALL.md](INSTALL.md).
+**For dev container users**:
+
+```bash
+# 1. Start dev container
+podman-compose -f compose.dev.yml up -d
+
+# 2. View logs
+podman exec -it flyer-crawler-dev pm2 logs
+
+# 3. Run tests
+podman exec -it flyer-crawler-dev npm test
+
+# 4. Stop when done
+podman-compose -f compose.dev.yml down
+```
+
+---
+
+Last updated: January 2026

docs/operations/BARE-METAL-SETUP.md

@@ -2,8 +2,54 @@
 
 This guide covers the manual installation of Flyer Crawler and its dependencies on a bare-metal Ubuntu server (e.g., a colocation server). This is the definitive reference for setting up a production environment without containers.
 
+**Last verified**: 2026-01-28
+
 **Target Environment**: Ubuntu 22.04 LTS (or newer)
 
+**Related documentation**:
+
+- [ADR-014: Containerization and Deployment Strategy](../adr/0014-containerization-and-deployment-strategy.md)
+- [ADR-015: Error Tracking and Observability](../adr/0015-error-tracking-and-observability.md)
+- [ADR-050: PostgreSQL Function Observability](../adr/0050-postgresql-function-observability.md)
+- [Deployment Guide](DEPLOYMENT.md)
+- [Monitoring Guide](MONITORING.md)
+
+---
+
+## Quick Reference
+
+### Installation Time Estimates
+
+| Component   | Estimated Time  | Notes                         |
+| ----------- | --------------- | ----------------------------- |
+| PostgreSQL  | 10-15 minutes   | Including PostGIS extensions  |
+| Redis       | 5 minutes       | Quick install                 |
+| Node.js     | 5 minutes       | Via NodeSource repository     |
+| Application | 15-20 minutes   | Clone, install, build         |
+| PM2         | 5 minutes       | Global install + config       |
+| NGINX       | 10-15 minutes   | Including SSL via Certbot     |
+| Bugsink     | 20-30 minutes   | Python venv, systemd services |
+| Logstash    | 15-20 minutes   | Including pipeline config     |
+| **Total**   | **~90 minutes** | For complete fresh install    |
+
+### Post-Installation Verification
+
+After completing setup, verify all services:
+
+```bash
+# Check all services are running
+systemctl status postgresql nginx redis-server gunicorn-bugsink snappea logstash
+
+# Verify application health
+curl -s https://flyer-crawler.projectium.com/api/health/ready | jq .
+
+# Check PM2 processes
+pm2 list
+
+# Verify Bugsink is accessible
+curl -s https://bugsink.projectium.com/accounts/login/ | head -5
+```
+
 ---
 
 ## Server Access Model

docs/operations/DEPLOYMENT.md

@@ -2,6 +2,41 @@
 
 This guide covers deploying Flyer Crawler to a production server.
 
+**Last verified**: 2026-01-28
+
+**Related documentation**:
+
+- [ADR-014: Containerization and Deployment Strategy](../adr/0014-containerization-and-deployment-strategy.md)
+- [ADR-015: Error Tracking and Observability](../adr/0015-error-tracking-and-observability.md)
+- [Bare-Metal Setup Guide](BARE-METAL-SETUP.md)
+- [Monitoring Guide](MONITORING.md)
+
+---
+
+## Quick Reference
+
+### Command Reference Table
+
+| Task                 | Command                                                                 |
+| -------------------- | ----------------------------------------------------------------------- |
+| Deploy to production | Gitea Actions workflow (manual trigger)                                 |
+| Deploy to test       | Automatic on push to `main`                                             |
+| Check PM2 status     | `pm2 list`                                                              |
+| View logs            | `pm2 logs flyer-crawler-api --lines 100`                                |
+| Restart all          | `pm2 restart all`                                                       |
+| Check NGINX          | `sudo nginx -t && sudo systemctl status nginx`                          |
+| Check health         | `curl -s https://flyer-crawler.projectium.com/api/health/ready \| jq .` |
+
+### Deployment URLs
+
+| Environment   | URL                                         | API Port |
+| ------------- | ------------------------------------------- | -------- |
+| Production    | `https://flyer-crawler.projectium.com`      | 3001     |
+| Test          | `https://flyer-crawler-test.projectium.com` | 3002     |
+| Dev Container | `https://localhost`                         | 3001     |
+
+---
+
 ## Server Access Model
 
 **Important**: Claude Code (and AI tools) have **READ-ONLY** access to production/test servers. The deployment workflow is:
@@ -24,12 +59,24 @@ When troubleshooting deployment issues:
 
 ## Prerequisites
 
-- Ubuntu server (22.04 LTS recommended)
-- PostgreSQL 14+ with PostGIS extension
-- Redis
-- Node.js 20.x
-- NGINX (reverse proxy)
-- PM2 (process manager)
+| Component  | Version   | Purpose                         |
+| ---------- | --------- | ------------------------------- |
+| Ubuntu     | 22.04 LTS | Operating system                |
+| PostgreSQL | 14+       | Database with PostGIS extension |
+| Redis      | 6+        | Caching and job queues          |
+| Node.js    | 20.x LTS  | Application runtime             |
+| NGINX      | 1.18+     | Reverse proxy and static files  |
+| PM2        | Latest    | Process manager                 |
+
+**Verify prerequisites**:
+
+```bash
+node --version   # Should be v20.x.x
+psql --version   # Should be 14+
+redis-cli ping   # Should return PONG
+nginx -v         # Should be 1.18+
+pm2 --version    # Any recent version
+```
 
 ## Dev Container Parity (ADR-014)
 
@@ -210,7 +257,7 @@ types {
 
 **Option 2**: Edit `/etc/nginx/mime.types` globally:
 
-```
+```text
 # Change this line:
 application/javascript js;
 
@@ -341,9 +388,78 @@ The Sentry SDK v10+ enforces HTTPS-only DSNs by default. Since Bugsink runs loca
 
 ---
 
+## Deployment Troubleshooting
+
+### Decision Tree: Deployment Issues
+
+```text
+Deployment failed?
+    |
+    +-- Build step failed?
+    |       |
+    |       +-- TypeScript errors --> Fix type issues, run `npm run type-check`
+    |       +-- Missing dependencies --> Run `npm ci`
+    |       +-- Out of memory --> Increase Node heap size
+    |
+    +-- Tests failed?
+    |       |
+    |       +-- Database connection --> Check DB_HOST, credentials
+    |       +-- Redis connection --> Check REDIS_URL
+    |       +-- Test isolation --> Check for race conditions
+    |
+    +-- SSH/Deploy failed?
+            |
+            +-- Permission denied --> Check SSH keys in Gitea secrets
+            +-- Host unreachable --> Check firewall, VPN
+            +-- PM2 error --> Check PM2 logs on server
+```
+
+### Common Deployment Issues
+
+| Symptom                              | Diagnosis               | Solution                                         |
+| ------------------------------------ | ----------------------- | ------------------------------------------------ |
+| "Connection refused" on health check | API not started         | Check `pm2 logs flyer-crawler-api`               |
+| 502 Bad Gateway                      | NGINX cannot reach API  | Verify API port (3001), restart PM2              |
+| CSS/JS not loading                   | Build artifacts missing | Re-run `npm run build`, check NGINX static paths |
+| Database migrations failed           | Schema mismatch         | Run migrations manually, check DB connectivity   |
+| "ENOSPC" error                       | Disk full               | Clear old logs: `pm2 flush`, clean npm cache     |
+| SSL certificate error                | Cert expired/missing    | Run `certbot renew`, check NGINX config          |
+
+### Post-Deployment Verification Checklist
+
+After every deployment, verify:
+
+- [ ] Health check passes: `curl -s https://flyer-crawler.projectium.com/api/health/ready`
+- [ ] PM2 processes running: `pm2 list` shows `online` status
+- [ ] No recent errors: Check Bugsink for new issues
+- [ ] Frontend loads: Browser shows login page
+- [ ] API responds: `curl https://flyer-crawler.projectium.com/api/health/ping`
+
+### Rollback Procedure
+
+If deployment causes issues:
+
+```bash
+# 1. Check current release
+cd /var/www/flyer-crawler.projectium.com
+git log --oneline -5
+
+# 2. Revert to previous commit
+git checkout HEAD~1
+
+# 3. Rebuild and restart
+npm ci && npm run build
+pm2 restart all
+
+# 4. Verify health
+curl -s http://localhost:3001/api/health/ready | jq .
+```
+
+---
+
 ## Related Documentation
 
-- [Database Setup](DATABASE.md) - PostgreSQL and PostGIS configuration
-- [Authentication Setup](AUTHENTICATION.md) - OAuth provider configuration
-- [Installation Guide](INSTALL.md) - Local development setup
-- [Bare-Metal Server Setup](docs/BARE-METAL-SETUP.md) - Manual server installation guide
+- [Database Setup](../architecture/DATABASE.md) - PostgreSQL and PostGIS configuration
+- [Monitoring Guide](MONITORING.md) - Health checks and error tracking
+- [Logstash Quick Reference](LOGSTASH-QUICK-REF.md) - Log aggregation
+- [Bare-Metal Server Setup](BARE-METAL-SETUP.md) - Manual server installation guide

docs/operations/LOGSTASH-QUICK-REF.md

@@ -2,10 +2,47 @@
 
 Aggregates logs from PostgreSQL, PM2, Redis, NGINX; forwards errors to Bugsink.
 
+**Last verified**: 2026-01-28
+
+**Related documentation**:
+
+- [ADR-050: PostgreSQL Function Observability](../adr/0050-postgresql-function-observability.md)
+- [ADR-015: Error Tracking and Observability](../adr/0015-error-tracking-and-observability.md)
+- [Monitoring Guide](MONITORING.md)
+- [Logstash Troubleshooting Runbook](LOGSTASH-TROUBLESHOOTING.md)
+
+---
+
+## Quick Reference
+
+### Bugsink Project Routing
+
+| Source Type    | Environment | Bugsink Project      | Project ID |
+| -------------- | ----------- | -------------------- | ---------- |
+| PM2 API/Worker | Dev         | Backend API (Dev)    | 1          |
+| PostgreSQL     | Dev         | Backend API (Dev)    | 1          |
+| Frontend JS    | Dev         | Frontend (Dev)       | 2          |
+| Redis/NGINX    | Dev         | Infrastructure (Dev) | 4          |
+| PM2 API/Worker | Production  | Backend API (Prod)   | 1          |
+| PostgreSQL     | Production  | Backend API (Prod)   | 1          |
+| PM2 API/Worker | Test        | Backend API (Test)   | 3          |
+
+### Key DSN Keys (Dev Container)
+
+| Project              | DSN Key                            |
+| -------------------- | ---------------------------------- |
+| Backend API (Dev)    | `cea01396c56246adb5878fa5ee6b1d22` |
+| Frontend (Dev)       | `d92663cb73cf4145b677b84029e4b762` |
+| Infrastructure (Dev) | `14e8791da3d347fa98073261b596cab9` |
+
+---
+
 ## Configuration
 
 **Primary config**: `/etc/logstash/conf.d/bugsink.conf`
 
+**Dev container config**: `docker/logstash/bugsink.conf`
+
 ### Related Files
 
 | Path                                                | Purpose                   |
@@ -89,6 +126,34 @@ MSYS_NO_PATHCONV=1 podman exec flyer-crawler-dev ls -la /var/log/redis/
 
 ## Troubleshooting
 
+### Decision Tree: Logs Not Appearing in Bugsink
+
+```text
+Errors not showing in Bugsink?
+    |
+    +-- Logstash running?
+    |       |
+    |       +-- No --> systemctl start logstash
+    |       +-- Yes --> Check pipeline stats
+    |               |
+    |               +-- Events in = 0?
+    |               |       |
+    |               |       +-- Log files exist? --> ls /var/log/pm2/*.log
+    |               |       +-- Permissions OK? --> groups logstash
+    |               |
+    |               +-- Events filtered = high?
+    |               |       |
+    |               |       +-- Grok failures --> Check log format matches pattern
+    |               |
+    |               +-- Events out but no Bugsink?
+    |                       |
+    |                       +-- 403 error --> Wrong DSN key
+    |                       +-- 500 error --> Invalid event format (check sentry_level)
+    |                       +-- Connection refused --> Bugsink not running
+```
+
+### Common Issues Table
+
 | Issue                 | Check            | Solution                                                                                       |
 | --------------------- | ---------------- | ---------------------------------------------------------------------------------------------- |
 | No Bugsink errors     | Logstash running | `systemctl status logstash`                                                                    |
@@ -103,6 +168,25 @@ MSYS_NO_PATHCONV=1 podman exec flyer-crawler-dev ls -la /var/log/redis/
 | High disk usage       | Log rotation     | Verify `/etc/logrotate.d/logstash` configured                                                  |
 | varchar(7) error      | Level validation | Add Ruby filter to validate/normalize `sentry_level` before output                             |
 
+### Expected Output Examples
+
+**Successful Logstash pipeline stats**:
+
+```json
+{
+  "in": 1523,
+  "out": 1520,
+  "filtered": 1520,
+  "queue_push_duration_in_millis": 45
+}
+```
+
+**Healthy Bugsink HTTP response**:
+
+```json
+{ "id": "a1b2c3d4e5f6..." }
+```
+
 ## Related Documentation
 
 - **Dev Container Guide**: [DEV-CONTAINER.md](../development/DEV-CONTAINER.md) - PM2 and log aggregation in dev

docs/operations/LOGSTASH-TROUBLESHOOTING.md

@@ -2,6 +2,16 @@
 
 This runbook provides step-by-step diagnostics and solutions for common Logstash issues in the PostgreSQL observability pipeline (ADR-050).
 
+**Last verified**: 2026-01-28
+
+**Related documentation**:
+
+- [ADR-050: PostgreSQL Function Observability](../adr/0050-postgresql-function-observability.md)
+- [Logstash Quick Reference](LOGSTASH-QUICK-REF.md)
+- [Monitoring Guide](MONITORING.md)
+
+---
+
 ## Quick Reference
 
 | Symptom                  | Most Likely Cause            | Quick Check                           |

docs/operations/MONITORING.md

@@ -2,6 +2,72 @@
 
 This guide covers all aspects of monitoring the Flyer Crawler application across development, test, and production environments.
 
+**Last verified**: 2026-01-28
+
+**Related documentation**:
+
+- [ADR-015: Error Tracking and Observability](../adr/0015-error-tracking-and-observability.md)
+- [ADR-020: Health Checks](../adr/0020-health-checks-and-liveness-readiness-probes.md)
+- [ADR-050: PostgreSQL Function Observability](../adr/0050-postgresql-function-observability.md)
+- [Logstash Quick Reference](LOGSTASH-QUICK-REF.md)
+- [Deployment Guide](DEPLOYMENT.md)
+
+---
+
+## Quick Reference
+
+### Monitoring URLs
+
+| Service      | Production URL                                          | Dev Container URL                        |
+| ------------ | ------------------------------------------------------- | ---------------------------------------- |
+| Health Check | `https://flyer-crawler.projectium.com/api/health/ready` | `http://localhost:3001/api/health/ready` |
+| Bugsink      | `https://bugsink.projectium.com`                        | `https://localhost:8443`                 |
+| Bull Board   | `https://flyer-crawler.projectium.com/api/admin/jobs`   | `http://localhost:3001/api/admin/jobs`   |
+
+### Quick Diagnostic Commands
+
+```bash
+# Check all services at once (production)
+curl -s https://flyer-crawler.projectium.com/api/health/ready | jq '.data.services'
+
+# Dev container health check
+podman exec flyer-crawler-dev curl -s http://localhost:3001/api/health/ready | jq .
+
+# PM2 process overview
+pm2 list
+
+# Recent errors in Bugsink (via MCP)
+# mcp__bugsink__list_issues --project_id 1 --status unresolved
+```
+
+### Monitoring Decision Tree
+
+```text
+Application seems slow or unresponsive?
+    |
+    +-- Check health endpoint first
+    |       |
+    |       +-- Returns unhealthy?
+    |       |       |
+    |       |       +-- Database unhealthy --> Check DB pool, connections
+    |       |       +-- Redis unhealthy --> Check Redis memory, connection
+    |       |       +-- Storage unhealthy --> Check disk space, permissions
+    |       |
+    |       +-- Returns healthy but slow?
+    |               |
+    |               +-- Check PM2 memory/CPU usage
+    |               +-- Check database slow query log
+    |               +-- Check Redis queue depth
+    |
+    +-- Health endpoint not responding?
+            |
+            +-- Check PM2 status --> Process crashed?
+            +-- Check NGINX --> 502 errors?
+            +-- Check network --> Firewall/DNS issues?
+```
+
+---
+
 ## Table of Contents
 
 1. [Health Checks](#health-checks)
@@ -294,7 +360,7 @@ The command outputs a 40-character hex token.
 
 **Error Anatomy**:
 
-```
+```text
 TypeError: Cannot read properties of undefined (reading 'map')
 ├── Exception Type: TypeError
 ├── Message: Cannot read properties of undefined (reading 'map')
@@ -357,7 +423,7 @@ Logstash aggregates logs from multiple sources and forwards errors to Bugsink (A
 
 ### Architecture
 
-```
+```text
 Log Sources                    Logstash                  Outputs
 ┌──────────────┐              ┌─────────────┐           ┌─────────────┐
 │ PostgreSQL   │──────────────│             │───────────│ Bugsink     │
@@ -520,7 +586,7 @@ pm2 stop flyer-crawler-api
 
 **Healthy Process**:
 
-```
+```text
 ┌─────────────────────┬────┬─────────┬─────────┬───────┬────────┬─────────┬──────────┐
 │ Name                │ id │ mode    │ status  │ cpu   │ mem    │ uptime  │ restarts │
 ├─────────────────────┼────┼─────────┼─────────┼───────┼────────┼─────────┼──────────┤
@@ -833,7 +899,7 @@ Configure alerts in your monitoring tool (UptimeRobot, Datadog, etc.):
 2. Review during business hours
 3. Create Gitea issue for tracking
 
-### Quick Diagnostic Commands
+### On-Call Diagnostic Commands
 
 > **Note**: User executes these commands on the server. Claude Code provides commands but cannot run them directly.
 

docs/plans/2026-01-28-adr-024-feature-flags-implementation.md

@@ -0,0 +1,849 @@
+# ADR-024 Implementation Plan: Feature Flagging Strategy
+
+**Date**: 2026-01-28
+**Type**: Technical Implementation Plan
+**Related**: [ADR-024: Feature Flagging Strategy](../adr/0024-feature-flagging-strategy.md), [ADR-007: Configuration and Secrets Management](../adr/0007-configuration-and-secrets-management.md)
+**Status**: Ready for Implementation
+
+---
+
+## Project Overview
+
+Implement a simple, configuration-based feature flag system that integrates with the existing Zod-validated configuration in `src/config/env.ts`. The system will support both backend and frontend feature flags through environment variables, with type-safe access patterns and helper utilities.
+
+### Key Success Criteria
+
+1. Feature flags accessible via type-safe API on both backend and frontend
+2. Zero runtime overhead when flag is disabled (compile-time elimination where possible)
+3. Consistent naming convention (environment variables and code access)
+4. Graceful degradation (missing flag defaults to disabled)
+5. Easy migration path to external service (Flagsmith/LaunchDarkly) in the future
+6. Full test coverage with mocking utilities
+
+### Estimated Total Effort
+
+| Phase                             | Estimate       |
+| --------------------------------- | -------------- |
+| Phase 1: Backend Infrastructure   | 3-5 hours      |
+| Phase 2: Frontend Infrastructure  | 2-3 hours      |
+| Phase 3: Documentation & Examples | 1-2 hours      |
+| **Total**                         | **6-10 hours** |
+
+---
+
+## Current State Analysis
+
+### Backend Configuration (`src/config/env.ts`)
+
+- Zod-based schema validation at startup
+- Organized into logical groups (database, redis, auth, smtp, ai, etc.)
+- Helper exports for service availability (`isSmtpConfigured`, `isAiConfigured`, etc.)
+- Environment helpers (`isProduction`, `isTest`, `isDevelopment`)
+- Fail-fast on invalid configuration
+
+### Frontend Configuration (`src/config.ts`)
+
+- Uses `import.meta.env` (Vite environment variables)
+- Organized into sections (app, google, sentry)
+- Boolean parsing for string env vars
+- Type declarations in `src/vite-env.d.ts`
+
+### Existing Patterns to Follow
+
+```typescript
+// Backend - service availability check pattern
+export const isSmtpConfigured =
+  !!config.smtp.host && !!config.smtp.user && !!config.smtp.pass;
+
+// Frontend - boolean parsing pattern
+enabled: import.meta.env.VITE_SENTRY_ENABLED !== 'false',
+```
+
+---
+
+## Task Breakdown
+
+### Phase 1: Backend Feature Flag Infrastructure
+
+#### [1.1] Define Feature Flag Schema in env.ts
+
+**Complexity**: Low
+**Estimate**: 30-45 minutes
+**Dependencies**: None
+**Parallelizable**: Yes
+
+**Description**: Add a new `featureFlags` section to the Zod schema in `src/config/env.ts`.
+
+**Acceptance Criteria**:
+
+- [ ] New `featureFlagsSchema` Zod object defined
+- [ ] Schema supports boolean flags with defaults to `false` (opt-in model)
+- [ ] Schema added to main `envSchema` object
+- [ ] Type exported as part of `EnvConfig`
+
+**Implementation Details**:
+
+```typescript
+// src/config/env.ts
+
+/**
+ * Feature flags configuration schema (ADR-024).
+ * All flags default to false (disabled) for safety.
+ * Set to 'true' in environment to enable.
+ */
+const featureFlagsSchema = z.object({
+  // Example flags - replace with actual feature flags as needed
+  newDashboard: booleanString(false),      // FEATURE_NEW_DASHBOARD
+  betaRecipes: booleanString(false),       // FEATURE_BETA_RECIPES
+  experimentalAi: booleanString(false),    // FEATURE_EXPERIMENTAL_AI
+  debugMode: booleanString(false),         // FEATURE_DEBUG_MODE
+});
+
+// In loadEnvVars():
+featureFlags: {
+  newDashboard: process.env.FEATURE_NEW_DASHBOARD,
+  betaRecipes: process.env.FEATURE_BETA_RECIPES,
+  experimentalAi: process.env.FEATURE_EXPERIMENTAL_AI,
+  debugMode: process.env.FEATURE_DEBUG_MODE,
+},
+```
+
+**Risks/Notes**:
+
+- Naming convention: `FEATURE_*` prefix for all feature flag env vars
+- Default to `false` ensures features are opt-in, preventing accidental exposure
+
+---
+
+#### [1.2] Create Feature Flag Service Module
+
+**Complexity**: Medium
+**Estimate**: 1-2 hours
+**Dependencies**: [1.1]
+**Parallelizable**: No (depends on 1.1)
+
+**Description**: Create a dedicated service module for feature flag access with helper functions.
+
+**File**: `src/services/featureFlags.server.ts`
+
+**Acceptance Criteria**:
+
+- [ ] `isFeatureEnabled(flagName)` function for checking flags
+- [ ] `getAllFeatureFlags()` function for debugging/admin endpoints
+- [ ] Type-safe flag name parameter (union type or enum)
+- [ ] Exported helper booleans for common flags (similar to `isSmtpConfigured`)
+- [ ] Logging when feature flag is checked in development mode
+
+**Implementation Details**:
+
+```typescript
+// src/services/featureFlags.server.ts
+import { config, isDevelopment } from '../config/env';
+import { logger } from './logger.server';
+
+export type FeatureFlagName = keyof typeof config.featureFlags;
+
+/**
+ * Check if a feature flag is enabled.
+ * @param flagName - The name of the feature flag to check
+ * @returns boolean indicating if the feature is enabled
+ */
+export function isFeatureEnabled(flagName: FeatureFlagName): boolean {
+  const enabled = config.featureFlags[flagName];
+
+  if (isDevelopment) {
+    logger.debug({ flag: flagName, enabled }, 'Feature flag checked');
+  }
+
+  return enabled;
+}
+
+/**
+ * Get all feature flags and their current states.
+ * Useful for debugging and admin endpoints.
+ */
+export function getAllFeatureFlags(): Record<FeatureFlagName, boolean> {
+  return { ...config.featureFlags };
+}
+
+// Convenience exports for common flag checks
+export const isNewDashboardEnabled = config.featureFlags.newDashboard;
+export const isBetaRecipesEnabled = config.featureFlags.betaRecipes;
+export const isExperimentalAiEnabled = config.featureFlags.experimentalAi;
+export const isDebugModeEnabled = config.featureFlags.debugMode;
+```
+
+**Risks/Notes**:
+
+- Keep logging minimal to avoid performance impact
+- Convenience exports are evaluated once at startup (not dynamic)
+
+---
+
+#### [1.3] Add Admin Endpoint for Feature Flag Status
+
+**Complexity**: Low
+**Estimate**: 30-45 minutes
+**Dependencies**: [1.2]
+**Parallelizable**: No (depends on 1.2)
+
+**Description**: Add an admin/health endpoint to view current feature flag states.
+
+**File**: `src/routes/admin.routes.ts` (or `stats.routes.ts` if admin routes don't exist)
+
+**Acceptance Criteria**:
+
+- [ ] `GET /api/v1/admin/feature-flags` endpoint (admin-only)
+- [ ] Returns JSON object with all flags and their states
+- [ ] Requires admin authentication
+- [ ] Endpoint documented in Swagger
+
+**Implementation Details**:
+
+```typescript
+// In appropriate routes file
+router.get('/feature-flags', requireAdmin, async (req, res) => {
+  const flags = getAllFeatureFlags();
+  sendSuccess(res, { flags });
+});
+```
+
+**Risks/Notes**:
+
+- Ensure endpoint is protected (admin-only)
+- Consider caching response if called frequently
+
+---
+
+#### [1.4] Backend Unit Tests
+
+**Complexity**: Medium
+**Estimate**: 1-2 hours
+**Dependencies**: [1.1], [1.2]
+**Parallelizable**: Yes (can start after 1.1, in parallel with 1.3)
+
+**Description**: Write unit tests for feature flag configuration and service.
+
+**Files**:
+
+- `src/config/env.test.ts` (add feature flag tests)
+- `src/services/featureFlags.server.test.ts` (new file)
+
+**Acceptance Criteria**:
+
+- [ ] Test default values (all false)
+- [ ] Test parsing 'true'/'false' strings
+- [ ] Test `isFeatureEnabled()` function
+- [ ] Test `getAllFeatureFlags()` function
+- [ ] Test type safety (TypeScript compile-time checks)
+
+**Implementation Details**:
+
+```typescript
+// src/config/env.test.ts - add to existing file
+describe('featureFlags configuration', () => {
+  it('should default all feature flags to false', async () => {
+    setValidEnv();
+    const { config } = await import('./env');
+
+    expect(config.featureFlags.newDashboard).toBe(false);
+    expect(config.featureFlags.betaRecipes).toBe(false);
+  });
+
+  it('should parse FEATURE_NEW_DASHBOARD as true when set', async () => {
+    setValidEnv({ FEATURE_NEW_DASHBOARD: 'true' });
+    const { config } = await import('./env');
+
+    expect(config.featureFlags.newDashboard).toBe(true);
+  });
+});
+
+// src/services/featureFlags.server.test.ts - new file
+describe('featureFlags service', () => {
+  describe('isFeatureEnabled', () => {
+    it('should return false for disabled flags', () => {
+      expect(isFeatureEnabled('newDashboard')).toBe(false);
+    });
+
+    // ... more tests
+  });
+});
+```
+
+---
+
+### Phase 2: Frontend Feature Flag Infrastructure
+
+#### [2.1] Add Frontend Feature Flag Config
+
+**Complexity**: Low
+**Estimate**: 30-45 minutes
+**Dependencies**: None (can run in parallel with Phase 1)
+**Parallelizable**: Yes
+
+**Description**: Add feature flags to the frontend config module.
+
+**Files**:
+
+- `src/config.ts` - Add featureFlags section
+- `src/vite-env.d.ts` - Add type declarations
+
+**Acceptance Criteria**:
+
+- [ ] Feature flags section added to `src/config.ts`
+- [ ] TypeScript declarations updated in `vite-env.d.ts`
+- [ ] Boolean parsing consistent with existing pattern
+- [ ] Default to false when env var not set
+
+**Implementation Details**:
+
+```typescript
+// src/config.ts
+const config = {
+  // ... existing sections ...
+
+  /**
+   * Feature flags for conditional feature rendering (ADR-024).
+   * All flags default to false (disabled) when not explicitly set.
+   */
+  featureFlags: {
+    newDashboard: import.meta.env.VITE_FEATURE_NEW_DASHBOARD === 'true',
+    betaRecipes: import.meta.env.VITE_FEATURE_BETA_RECIPES === 'true',
+    experimentalAi: import.meta.env.VITE_FEATURE_EXPERIMENTAL_AI === 'true',
+    debugMode: import.meta.env.VITE_FEATURE_DEBUG_MODE === 'true',
+  },
+};
+
+// src/vite-env.d.ts
+interface ImportMetaEnv {
+  // ... existing declarations ...
+  readonly VITE_FEATURE_NEW_DASHBOARD?: string;
+  readonly VITE_FEATURE_BETA_RECIPES?: string;
+  readonly VITE_FEATURE_EXPERIMENTAL_AI?: string;
+  readonly VITE_FEATURE_DEBUG_MODE?: string;
+}
+```
+
+---
+
+#### [2.2] Create useFeatureFlag React Hook
+
+**Complexity**: Medium
+**Estimate**: 1-1.5 hours
+**Dependencies**: [2.1]
+**Parallelizable**: No (depends on 2.1)
+
+**Description**: Create a React hook for checking feature flags in components.
+
+**File**: `src/hooks/useFeatureFlag.ts`
+
+**Acceptance Criteria**:
+
+- [ ] `useFeatureFlag(flagName)` hook returns boolean
+- [ ] Type-safe flag name parameter
+- [ ] Memoized to prevent unnecessary re-renders
+- [ ] Optional `FeatureFlag` component for conditional rendering
+
+**Implementation Details**:
+
+```typescript
+// src/hooks/useFeatureFlag.ts
+import { useMemo } from 'react';
+import config from '../config';
+
+export type FeatureFlagName = keyof typeof config.featureFlags;
+
+/**
+ * Hook to check if a feature flag is enabled.
+ *
+ * @param flagName - The name of the feature flag to check
+ * @returns boolean indicating if the feature is enabled
+ *
+ * @example
+ * const isNewDashboard = useFeatureFlag('newDashboard');
+ * if (isNewDashboard) {
+ *   return <NewDashboard />;
+ * }
+ */
+export function useFeatureFlag(flagName: FeatureFlagName): boolean {
+  return useMemo(() => config.featureFlags[flagName], [flagName]);
+}
+
+/**
+ * Get all feature flags (useful for debugging).
+ */
+export function useAllFeatureFlags(): Record<FeatureFlagName, boolean> {
+  return useMemo(() => ({ ...config.featureFlags }), []);
+}
+```
+
+---
+
+#### [2.3] Create FeatureFlag Component
+
+**Complexity**: Low
+**Estimate**: 30-45 minutes
+**Dependencies**: [2.2]
+**Parallelizable**: No (depends on 2.2)
+
+**Description**: Create a declarative component for feature flag conditional rendering.
+
+**File**: `src/components/FeatureFlag.tsx`
+
+**Acceptance Criteria**:
+
+- [ ] `<FeatureFlag name="flagName">` component
+- [ ] Children rendered only when flag is enabled
+- [ ] Optional `fallback` prop for disabled state
+- [ ] TypeScript-enforced flag names
+
+**Implementation Details**:
+
+```typescript
+// src/components/FeatureFlag.tsx
+import { ReactNode } from 'react';
+import { useFeatureFlag, FeatureFlagName } from '../hooks/useFeatureFlag';
+
+interface FeatureFlagProps {
+  /** The name of the feature flag to check */
+  name: FeatureFlagName;
+  /** Content to render when feature is enabled */
+  children: ReactNode;
+  /** Optional content to render when feature is disabled */
+  fallback?: ReactNode;
+}
+
+/**
+ * Conditionally renders children based on feature flag state.
+ *
+ * @example
+ * <FeatureFlag name="newDashboard" fallback={<OldDashboard />}>
+ *   <NewDashboard />
+ * </FeatureFlag>
+ */
+export function FeatureFlag({ name, children, fallback = null }: FeatureFlagProps) {
+  const isEnabled = useFeatureFlag(name);
+  return <>{isEnabled ? children : fallback}</>;
+}
+```
+
+---
+
+#### [2.4] Frontend Unit Tests
+
+**Complexity**: Medium
+**Estimate**: 1-1.5 hours
+**Dependencies**: [2.1], [2.2], [2.3]
+**Parallelizable**: No (depends on previous frontend tasks)
+
+**Description**: Write unit tests for frontend feature flag utilities.
+
+**Files**:
+
+- `src/config.test.ts` (add feature flag tests)
+- `src/hooks/useFeatureFlag.test.ts` (new file)
+- `src/components/FeatureFlag.test.tsx` (new file)
+
+**Acceptance Criteria**:
+
+- [ ] Test config structure includes featureFlags
+- [ ] Test default values (all false)
+- [ ] Test hook returns correct values
+- [ ] Test component renders/hides children correctly
+- [ ] Test fallback rendering
+
+**Implementation Details**:
+
+```typescript
+// src/hooks/useFeatureFlag.test.ts
+import { renderHook } from '@testing-library/react';
+import { useFeatureFlag, useAllFeatureFlags } from './useFeatureFlag';
+
+describe('useFeatureFlag', () => {
+  it('should return false for disabled flags', () => {
+    const { result } = renderHook(() => useFeatureFlag('newDashboard'));
+    expect(result.current).toBe(false);
+  });
+});
+
+// src/components/FeatureFlag.test.tsx
+import { render, screen } from '@testing-library/react';
+import { FeatureFlag } from './FeatureFlag';
+
+describe('FeatureFlag', () => {
+  it('should not render children when flag is disabled', () => {
+    render(
+      <FeatureFlag name="newDashboard">
+        <div data-testid="new-feature">New Feature</div>
+      </FeatureFlag>
+    );
+    expect(screen.queryByTestId('new-feature')).not.toBeInTheDocument();
+  });
+
+  it('should render fallback when flag is disabled', () => {
+    render(
+      <FeatureFlag name="newDashboard" fallback={<div>Old Feature</div>}>
+        <div>New Feature</div>
+      </FeatureFlag>
+    );
+    expect(screen.getByText('Old Feature')).toBeInTheDocument();
+  });
+});
+```
+
+---
+
+### Phase 3: Documentation & Integration
+
+#### [3.1] Update ADR-024 with Implementation Status
+
+**Complexity**: Low
+**Estimate**: 30 minutes
+**Dependencies**: [1.1], [1.2], [2.1], [2.2]
+**Parallelizable**: Yes (can be done after core implementation)
+
+**Description**: Update ADR-024 to mark it as implemented and add implementation details.
+
+**File**: `docs/adr/0024-feature-flagging-strategy.md`
+
+**Acceptance Criteria**:
+
+- [ ] Status changed from "Proposed" to "Accepted"
+- [ ] Implementation status section added
+- [ ] Key files documented
+- [ ] Usage examples included
+
+---
+
+#### [3.2] Update Environment Documentation
+
+**Complexity**: Low
+**Estimate**: 30 minutes
+**Dependencies**: [1.1], [2.1]
+**Parallelizable**: Yes
+
+**Description**: Add feature flag environment variables to documentation.
+
+**Files**:
+
+- `docs/getting-started/ENVIRONMENT.md`
+- `.env.example`
+
+**Acceptance Criteria**:
+
+- [ ] Feature flag variables documented in ENVIRONMENT.md
+- [ ] New section "Feature Flags" added
+- [ ] `.env.example` updated with commented feature flag examples
+
+**Implementation Details**:
+
+```bash
+# .env.example addition
+# ===================
+# Feature Flags (ADR-024)
+# ===================
+# All feature flags default to disabled (false) when not set.
+# Set to 'true' to enable a feature.
+#
+# FEATURE_NEW_DASHBOARD=false
+# FEATURE_BETA_RECIPES=false
+# FEATURE_EXPERIMENTAL_AI=false
+# FEATURE_DEBUG_MODE=false
+#
+# Frontend equivalents (prefix with VITE_):
+# VITE_FEATURE_NEW_DASHBOARD=false
+# VITE_FEATURE_BETA_RECIPES=false
+```
+
+---
+
+#### [3.3] Create CODE-PATTERNS Entry
+
+**Complexity**: Low
+**Estimate**: 30 minutes
+**Dependencies**: All implementation tasks
+**Parallelizable**: Yes
+
+**Description**: Add feature flag usage patterns to CODE-PATTERNS.md.
+
+**File**: `docs/development/CODE-PATTERNS.md`
+
+**Acceptance Criteria**:
+
+- [ ] Feature flag section added with examples
+- [ ] Backend usage pattern documented
+- [ ] Frontend usage pattern documented
+- [ ] Testing pattern documented
+
+---
+
+#### [3.4] Update CLAUDE.md Quick Reference
+
+**Complexity**: Low
+**Estimate**: 15 minutes
+**Dependencies**: All implementation tasks
+**Parallelizable**: Yes
+
+**Description**: Add feature flags to the CLAUDE.md quick reference tables.
+
+**File**: `CLAUDE.md`
+
+**Acceptance Criteria**:
+
+- [ ] Feature flags added to "Key Patterns" table
+- [ ] Reference to featureFlags service added
+
+---
+
+## Implementation Sequence
+
+### Phase 1 (Backend) - Can Start Immediately
+
+```text
+[1.1] Schema ──────────┬──> [1.2] Service ──> [1.3] Admin Endpoint
+                       │
+                       └──> [1.4] Backend Tests (can start after 1.1)
+```
+
+### Phase 2 (Frontend) - Can Start Immediately (Parallel with Phase 1)
+
+```text
+[2.1] Config ──> [2.2] Hook ──> [2.3] Component ──> [2.4] Frontend Tests
+```
+
+### Phase 3 (Documentation) - After Implementation
+
+```text
+All Phase 1 & 2 Tasks ──> [3.1] ADR Update
+                     ├──> [3.2] Env Docs
+                     ├──> [3.3] Code Patterns
+                     └──> [3.4] CLAUDE.md
+```
+
+---
+
+## Critical Path
+
+The minimum path to a working feature flag system:
+
+1. **[1.1] Schema** (30 min) - Required for backend
+2. **[1.2] Service** (1.5 hr) - Required for backend access
+3. **[2.1] Frontend Config** (30 min) - Required for frontend
+4. **[2.2] Hook** (1 hr) - Required for React integration
+
+**Critical path duration**: ~3.5 hours
+
+Non-critical but recommended:
+
+- Admin endpoint (debugging)
+- FeatureFlag component (developer convenience)
+- Tests (quality assurance)
+- Documentation (maintainability)
+
+---
+
+## Scope Recommendations
+
+### MVP (Minimum Viable Implementation)
+
+Include in initial implementation:
+
+- [1.1] Backend schema with 2-3 example flags
+- [1.2] Feature flag service
+- [2.1] Frontend config
+- [2.2] useFeatureFlag hook
+- [1.4] Core backend tests
+- [2.4] Core frontend tests
+
+### Enhancements (Future Iterations)
+
+Defer to follow-up work:
+
+- Admin endpoint for flag visibility
+- FeatureFlag component (nice-to-have)
+- Dynamic flag updates without restart (requires external service)
+- User-specific flags (A/B testing)
+- Flag analytics/usage tracking
+- Gradual rollout percentages
+
+### Explicitly Out of Scope
+
+- Integration with Flagsmith/LaunchDarkly (future ADR)
+- Database-stored flags (requires schema changes)
+- Real-time flag updates (WebSocket/SSE)
+- Flag inheritance/hierarchy
+- Flag audit logging
+
+---
+
+## Testing Strategy
+
+### Backend Tests
+
+| Test Type         | Coverage Target                          | Location                                   |
+| ----------------- | ---------------------------------------- | ------------------------------------------ |
+| Schema validation | Parse true/false, defaults               | `src/config/env.test.ts`                   |
+| Service functions | `isFeatureEnabled`, `getAllFeatureFlags` | `src/services/featureFlags.server.test.ts` |
+| Integration       | Admin endpoint (if added)                | `src/routes/admin.routes.test.ts`          |
+
+### Frontend Tests
+
+| Test Type           | Coverage Target             | Location                              |
+| ------------------- | --------------------------- | ------------------------------------- |
+| Config structure    | featureFlags section exists | `src/config.test.ts`                  |
+| Hook behavior       | Returns correct values      | `src/hooks/useFeatureFlag.test.ts`    |
+| Component rendering | Conditional children        | `src/components/FeatureFlag.test.tsx` |
+
+### Mocking Pattern for Tests
+
+```typescript
+// Backend - reset modules to test different flag states
+beforeEach(() => {
+  vi.resetModules();
+  process.env.FEATURE_NEW_DASHBOARD = 'true';
+});
+
+// Frontend - mock config module
+vi.mock('../config', () => ({
+  default: {
+    featureFlags: {
+      newDashboard: true,
+      betaRecipes: false,
+    },
+  },
+}));
+```
+
+---
+
+## Risk Assessment
+
+| Risk                                        | Impact | Likelihood | Mitigation                                                    |
+| ------------------------------------------- | ------ | ---------- | ------------------------------------------------------------- |
+| Flag state inconsistency (backend/frontend) | Medium | Low        | Use same env var naming, document sync requirements           |
+| Performance impact from flag checks         | Low    | Low        | Flags cached at startup, no runtime DB calls                  |
+| Stale flags after deployment                | Medium | Medium     | Document restart requirement, consider future dynamic loading |
+| Feature creep (too many flags)              | Medium | Medium     | Require ADR for new flags, sunset policy                      |
+| Missing flag causes crash                   | High   | Low        | Default to false, graceful degradation                        |
+
+---
+
+## Files to Create
+
+| File                                       | Purpose                      |
+| ------------------------------------------ | ---------------------------- |
+| `src/services/featureFlags.server.ts`      | Backend feature flag service |
+| `src/services/featureFlags.server.test.ts` | Backend tests                |
+| `src/hooks/useFeatureFlag.ts`              | React hook for flag access   |
+| `src/hooks/useFeatureFlag.test.ts`         | Hook tests                   |
+| `src/components/FeatureFlag.tsx`           | Declarative flag component   |
+| `src/components/FeatureFlag.test.tsx`      | Component tests              |
+
+## Files to Modify
+
+| File                                         | Changes                            |
+| -------------------------------------------- | ---------------------------------- |
+| `src/config/env.ts`                          | Add featureFlagsSchema and loading |
+| `src/config/env.test.ts`                     | Add feature flag tests             |
+| `src/config.ts`                              | Add featureFlags section           |
+| `src/config.test.ts`                         | Add feature flag tests             |
+| `src/vite-env.d.ts`                          | Add VITE*FEATURE*\* declarations   |
+| `.env.example`                               | Add feature flag examples          |
+| `docs/adr/0024-feature-flagging-strategy.md` | Update status and details          |
+| `docs/getting-started/ENVIRONMENT.md`        | Document feature flag vars         |
+| `docs/development/CODE-PATTERNS.md`          | Add usage patterns                 |
+| `CLAUDE.md`                                  | Add to quick reference             |
+
+---
+
+## Verification Commands
+
+After implementation, run these commands in the dev container:
+
+```bash
+# Type checking
+podman exec -it flyer-crawler-dev npm run type-check
+
+# Backend unit tests
+podman exec -it flyer-crawler-dev npm run test:unit -- --grep "featureFlag"
+
+# Frontend tests (includes hook and component tests)
+podman exec -it flyer-crawler-dev npm run test:unit -- --grep "FeatureFlag"
+
+# Full test suite
+podman exec -it flyer-crawler-dev npm test
+```
+
+---
+
+## Example Usage (Post-Implementation)
+
+### Backend Route Handler
+
+```typescript
+// src/routes/flyers.routes.ts
+import { isFeatureEnabled } from '../services/featureFlags.server';
+
+router.get('/dashboard', async (req, res) => {
+  if (isFeatureEnabled('newDashboard')) {
+    // New dashboard logic
+    return sendSuccess(res, { version: 'v2', data: await getNewDashboardData() });
+  }
+  // Legacy dashboard
+  return sendSuccess(res, { version: 'v1', data: await getLegacyDashboardData() });
+});
+```
+
+### React Component
+
+```tsx
+// src/pages/Dashboard.tsx
+import { FeatureFlag } from '../components/FeatureFlag';
+import { useFeatureFlag } from '../hooks/useFeatureFlag';
+
+// Option 1: Declarative component
+function Dashboard() {
+  return (
+    <FeatureFlag name="newDashboard" fallback={<LegacyDashboard />}>
+      <NewDashboard />
+    </FeatureFlag>
+  );
+}
+
+// Option 2: Hook for logic
+function DashboardWithLogic() {
+  const isNewDashboard = useFeatureFlag('newDashboard');
+
+  useEffect(() => {
+    if (isNewDashboard) {
+      analytics.track('new_dashboard_viewed');
+    }
+  }, [isNewDashboard]);
+
+  return isNewDashboard ? <NewDashboard /> : <LegacyDashboard />;
+}
+```
+
+---
+
+## Implementation Notes
+
+### Naming Convention
+
+| Context          | Pattern                   | Example                            |
+| ---------------- | ------------------------- | ---------------------------------- |
+| Backend env var  | `FEATURE_SNAKE_CASE`      | `FEATURE_NEW_DASHBOARD`            |
+| Frontend env var | `VITE_FEATURE_SNAKE_CASE` | `VITE_FEATURE_NEW_DASHBOARD`       |
+| Config property  | `camelCase`               | `config.featureFlags.newDashboard` |
+| Type/Hook param  | `camelCase`               | `isFeatureEnabled('newDashboard')` |
+
+### Flag Lifecycle
+
+1. **Adding a flag**: Add to both schemas, set default to `false`, document
+2. **Enabling a flag**: Set env var to `'true'`, restart application
+3. **Removing a flag**: Remove conditional code first, then remove flag from schemas
+4. **Sunset policy**: Flags should be removed within 3 months of full rollout
+
+---
+
+Last updated: 2026-01-28

docs/subagents/AI-USAGE-GUIDE.md

@@ -2,6 +2,17 @@
 
 The **ai-usage** subagent specializes in LLM APIs (Gemini, Claude), prompt engineering, and AI-powered features in the Flyer Crawler project.
 
+## Quick Reference
+
+| Aspect             | Details                                                                             |
+| ------------------ | ----------------------------------------------------------------------------------- |
+| **Primary Use**    | Gemini API integration, prompt engineering, AI extraction                           |
+| **Key Files**      | `src/services/aiService.server.ts`, `src/services/flyerProcessingService.server.ts` |
+| **Key ADRs**       | ADR-041 (AI Integration), ADR-046 (Image Processing)                                |
+| **API Key Env**    | `VITE_GOOGLE_GENAI_API_KEY` (prod), `VITE_GOOGLE_GENAI_API_KEY_TEST` (test)         |
+| **Error Handling** | Rate limits (429), JSON parse errors, timeout handling                              |
+| **Delegate To**    | `coder` (implementation), `testwriter` (tests), `integrations-specialist`           |
+
 ## When to Use
 
 Use the **ai-usage** subagent when you need to:
@@ -295,6 +306,9 @@ const fixtureResponse = await fs.readFile('fixtures/gemini-response.json');
 ## Related Documentation
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
+- [CODER-GUIDE.md](./CODER-GUIDE.md) - For implementing AI features
+- [TESTER-GUIDE.md](./TESTER-GUIDE.md) - Testing AI features
+- [INTEGRATIONS-GUIDE.md](./INTEGRATIONS-GUIDE.md) - External API patterns
 - [../adr/0041-ai-gemini-integration-architecture.md](../adr/0041-ai-gemini-integration-architecture.md) - AI integration ADR
 - [../adr/0046-image-processing-pipeline.md](../adr/0046-image-processing-pipeline.md) - Image processing
-- [CODER-GUIDE.md](./CODER-GUIDE.md) - For implementing AI features
+- [../getting-started/ENVIRONMENT.md](../getting-started/ENVIRONMENT.md) - Environment configuration

docs/subagents/CODER-GUIDE.md

@@ -2,6 +2,17 @@
 
 The **coder** subagent is your primary tool for writing and modifying production Node.js/TypeScript code in the Flyer Crawler project. This guide explains how to work effectively with the coder subagent.
 
+## Quick Reference
+
+| Aspect           | Details                                                                  |
+| ---------------- | ------------------------------------------------------------------------ |
+| **Primary Use**  | Write/modify production TypeScript code                                  |
+| **Key Files**    | `src/routes/*.routes.ts`, `src/services/**/*.ts`, `src/components/*.tsx` |
+| **Key ADRs**     | ADR-034 (Repository), ADR-035 (Services), ADR-028 (API Response)         |
+| **Test Command** | `podman exec -it flyer-crawler-dev npm run test:unit`                    |
+| **Type Check**   | `podman exec -it flyer-crawler-dev npm run type-check`                   |
+| **Delegate To**  | `db-dev` (database), `frontend-specialist` (UI), `testwriter` (tests)    |
+
 ## When to Use the Coder Subagent
 
 Use the coder subagent when you need to:
@@ -307,6 +318,8 @@ error classes for all database operations"
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
 - [TESTER-GUIDE.md](./TESTER-GUIDE.md) - Testing strategies
+- [DATABASE-GUIDE.md](./DATABASE-GUIDE.md) - Database development workflows
 - [../adr/0034-repository-pattern-standards.md](../adr/0034-repository-pattern-standards.md) - Repository patterns
 - [../adr/0035-service-layer-architecture.md](../adr/0035-service-layer-architecture.md) - Service layer architecture
 - [../adr/0028-api-response-standardization.md](../adr/0028-api-response-standardization.md) - API response patterns
+- [../development/CODE-PATTERNS.md](../development/CODE-PATTERNS.md) - Code patterns reference

docs/subagents/DATABASE-GUIDE.md

@@ -5,6 +5,17 @@ This guide covers two database-focused subagents:
 - **db-dev**: Database development - schemas, queries, migrations, optimization
 - **db-admin**: Database administration - PostgreSQL/Redis admin, security, backups
 
+## Quick Reference
+
+| Aspect           | db-dev                                       | db-admin                                   |
+| ---------------- | -------------------------------------------- | ------------------------------------------ |
+| **Primary Use**  | Schemas, queries, migrations                 | Performance tuning, backups, security      |
+| **Key Files**    | `src/services/db/*.db.ts`, `sql/migrations/` | `postgresql.conf`, `pg_hba.conf`           |
+| **Key ADRs**     | ADR-034 (Repository), ADR-002 (Transactions) | ADR-019 (Backups), ADR-050 (Observability) |
+| **Test Command** | `podman exec -it flyer-crawler-dev npm test` | N/A                                        |
+| **MCP Tool**     | `mcp__devdb__query`                          | SSH to production                          |
+| **Delegate To**  | `coder` (service layer), `db-admin` (perf)   | `devops` (infrastructure)                  |
+
 ## Understanding the Difference
 
 | Aspect          | db-dev                              | db-admin                              |
@@ -412,8 +423,9 @@ This is useful for:
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
 - [CODER-GUIDE.md](./CODER-GUIDE.md) - Working with the coder subagent
+- [DEVOPS-GUIDE.md](./DEVOPS-GUIDE.md) - DevOps and deployment workflows
 - [../adr/0034-repository-pattern-standards.md](../adr/0034-repository-pattern-standards.md) - Repository patterns
 - [../adr/0002-standardized-transaction-management.md](../adr/0002-standardized-transaction-management.md) - Transaction management
 - [../adr/0019-data-backup-and-recovery-strategy.md](../adr/0019-data-backup-and-recovery-strategy.md) - Backup strategy
 - [../adr/0050-postgresql-function-observability.md](../adr/0050-postgresql-function-observability.md) - Database observability
-- [../BARE-METAL-SETUP.md](../BARE-METAL-SETUP.md) - Production database setup
+- [../operations/BARE-METAL-SETUP.md](../operations/BARE-METAL-SETUP.md) - Production database setup

docs/subagents/DEVOPS-GUIDE.md

@@ -6,6 +6,17 @@ This guide covers DevOps-related subagents for deployment, infrastructure, and o
 - **infra-architect**: Resource optimization, capacity planning
 - **bg-worker**: Background jobs, PM2 workers, BullMQ queues
 
+## Quick Reference
+
+| Aspect           | devops                                     | infra-architect             | bg-worker                       |
+| ---------------- | ------------------------------------------ | --------------------------- | ------------------------------- |
+| **Primary Use**  | Containers, CI/CD, deployments             | Resource optimization       | BullMQ queues, PM2 workers      |
+| **Key Files**    | `compose.dev.yml`, `.gitea/workflows/`     | `ecosystem.config.cjs`      | `src/services/queues.server.ts` |
+| **Key ADRs**     | ADR-014 (Containers), ADR-017 (CI/CD)      | N/A                         | ADR-006 (Background Jobs)       |
+| **Commands**     | `podman-compose`, `pm2`                    | `pm2 monit`, system metrics | Redis CLI, `pm2 logs`           |
+| **MCP Tools**    | `mcp__podman__*`                           | N/A                         | N/A                             |
+| **Access Model** | Read-only on production (provide commands) | Same                        | Same                            |
+
 ---
 
 ## CRITICAL: Server Access Model
@@ -543,8 +554,13 @@ podman exec -it flyer-crawler-dev npm test
 ## Related Documentation
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
-- [../BARE-METAL-SETUP.md](../BARE-METAL-SETUP.md) - Production setup guide
+- [DATABASE-GUIDE.md](./DATABASE-GUIDE.md) - Database administration
+- [SECURITY-DEBUG-GUIDE.md](./SECURITY-DEBUG-GUIDE.md) - Production debugging
+- [../operations/BARE-METAL-SETUP.md](../operations/BARE-METAL-SETUP.md) - Production setup guide
+- [../operations/DEPLOYMENT.md](../operations/DEPLOYMENT.md) - Deployment guide
+- [../operations/MONITORING.md](../operations/MONITORING.md) - Monitoring guide
+- [../development/DEV-CONTAINER.md](../development/DEV-CONTAINER.md) - Dev container guide
 - [../adr/0014-containerization-and-deployment-strategy.md](../adr/0014-containerization-and-deployment-strategy.md) - Containerization ADR
 - [../adr/0006-background-job-processing-and-task-queues.md](../adr/0006-background-job-processing-and-task-queues.md) - Background jobs ADR
 - [../adr/0017-ci-cd-and-branching-strategy.md](../adr/0017-ci-cd-and-branching-strategy.md) - CI/CD strategy
-- [../adr/0053-worker-health-checks.md](../adr/0053-worker-health-checks.md) - Worker health checks
+- [../adr/0053-worker-health-checks-and-monitoring.md](../adr/0053-worker-health-checks-and-monitoring.md) - Worker health checks

docs/subagents/DOCUMENTATION-GUIDE.md

@@ -7,6 +7,15 @@ This guide covers documentation-focused subagents:
 - **planner**: Feature breakdown, roadmaps, scope management
 - **product-owner**: Requirements, user stories, backlog prioritization
 
+## Quick Reference
+
+| Aspect          | documenter           | describer-for-ai         | planner               | product-owner          |
+| --------------- | -------------------- | ------------------------ | --------------------- | ---------------------- |
+| **Primary Use** | User docs, API specs | ADRs, technical specs    | Feature breakdown     | User stories, backlog  |
+| **Key Files**   | `docs/`, API docs    | `docs/adr/`, `CLAUDE.md` | `docs/plans/`         | Issue tracker          |
+| **Output**      | Markdown guides      | ADRs, context docs       | Task lists, roadmaps  | User stories, criteria |
+| **Delegate To** | `coder` (implement)  | `documenter` (user docs) | `coder` (build tasks) | `planner` (breakdown)  |
+
 ## The documenter Subagent
 
 ### When to Use
@@ -437,6 +446,8 @@ Include dates on documentation that may become stale:
 ## Related Documentation
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
+- [CODER-GUIDE.md](./CODER-GUIDE.md) - For implementing documented features
 - [../adr/index.md](../adr/index.md) - ADR index
-- [../TESTING.md](../TESTING.md) - Testing guide
+- [../development/TESTING.md](../development/TESTING.md) - Testing guide
+- [../development/CODE-PATTERNS.md](../development/CODE-PATTERNS.md) - Code patterns reference
 - [../../CLAUDE.md](../../CLAUDE.md) - AI instructions

docs/subagents/FRONTEND-GUIDE.md

@@ -5,6 +5,17 @@ This guide covers frontend-focused subagents:
 - **frontend-specialist**: UI components, Neo-Brutalism, Core Web Vitals, accessibility
 - **uiux-designer**: UI/UX decisions, component design, user experience
 
+## Quick Reference
+
+| Aspect            | frontend-specialist                            | uiux-designer                          |
+| ----------------- | ---------------------------------------------- | -------------------------------------- |
+| **Primary Use**   | React components, performance, accessibility   | Design decisions, user flows           |
+| **Key Files**     | `src/components/`, `src/features/`             | Design specs, mockups                  |
+| **Key ADRs**      | ADR-012 (Design System), ADR-044 (Feature Org) | ADR-012 (Design System)                |
+| **Design System** | Neo-Brutalism (bold borders, high contrast)    | Same                                   |
+| **State Mgmt**    | TanStack Query (server), Zustand (client)      | N/A                                    |
+| **Delegate To**   | `coder` (backend), `tester` (test coverage)    | `frontend-specialist` (implementation) |
+
 ## The frontend-specialist Subagent
 
 ### When to Use
@@ -406,7 +417,8 @@ const handleSelect = useCallback((id: string) => {
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
 - [CODER-GUIDE.md](./CODER-GUIDE.md) - For implementing features
-- [../DESIGN_TOKENS.md](../DESIGN_TOKENS.md) - Design token reference
+- [TESTER-GUIDE.md](./TESTER-GUIDE.md) - Component testing patterns
+- [../development/DESIGN_TOKENS.md](../development/DESIGN_TOKENS.md) - Design token reference
 - [../adr/0012-frontend-component-library-and-design-system.md](../adr/0012-frontend-component-library-and-design-system.md) - Design system ADR
 - [../adr/0005-frontend-state-management-and-server-cache-strategy.md](../adr/0005-frontend-state-management-and-server-cache-strategy.md) - State management ADR
 - [../adr/0044-frontend-feature-organization.md](../adr/0044-frontend-feature-organization.md) - Feature organization

docs/subagents/INTEGRATIONS-GUIDE.md

@@ -0,0 +1,396 @@
+# Integrations Subagent Guide
+
+The **integrations-specialist** subagent handles third-party services, webhooks, and external API integrations in the Flyer Crawler project.
+
+## Quick Reference
+
+| Aspect          | Details                                                                     |
+| --------------- | --------------------------------------------------------------------------- |
+| **Primary Use** | External APIs, webhooks, OAuth, third-party services                        |
+| **Key Files**   | `src/services/external/`, `src/routes/webhooks.routes.ts`                   |
+| **Key ADRs**    | ADR-041 (AI Integration), ADR-016 (API Security), ADR-048 (Auth)            |
+| **MCP Tools**   | `mcp__gitea-projectium__*`, `mcp__bugsink__*`                               |
+| **Security**    | API key storage, webhook signatures, OAuth state param                      |
+| **Delegate To** | `coder` (implementation), `security-engineer` (review), `ai-usage` (Gemini) |
+
+## When to Use
+
+Use the **integrations-specialist** subagent when you need to:
+
+- Integrate with external APIs (OAuth, REST, GraphQL)
+- Implement webhook handlers
+- Configure third-party services
+- Debug external service connectivity
+- Handle API authentication flows
+- Manage external service rate limits
+
+## What integrations-specialist Knows
+
+The integrations-specialist subagent understands:
+
+- OAuth 2.0 flows (authorization code, client credentials)
+- REST API integration patterns
+- Webhook security (signature verification)
+- External service error handling
+- Rate limiting and retry strategies
+- API key management
+
+## Current Integrations
+
+| Service       | Purpose                | Integration Type | Key Files                          |
+| ------------- | ---------------------- | ---------------- | ---------------------------------- |
+| Google Gemini | AI flyer extraction    | REST API         | `src/services/aiService.server.ts` |
+| Bugsink       | Error tracking         | REST API         | MCP: `mcp__bugsink__*`             |
+| Gitea         | Repository and CI/CD   | REST API         | MCP: `mcp__gitea-projectium__*`    |
+| Redis         | Caching and job queues | Native client    | `src/services/redis.server.ts`     |
+| PostgreSQL    | Primary database       | Native client    | `src/services/db/pool.db.ts`       |
+
+## Example Requests
+
+### Adding External API Integration
+
+```
+"Use integrations-specialist to integrate with the Store API
+to automatically fetch store location data. Include proper
+error handling, rate limiting, and caching."
+```
+
+### OAuth Implementation
+
+```
+"Use integrations-specialist to implement Google OAuth for
+user authentication. Include token refresh handling and
+session management."
+```
+
+### Webhook Handler
+
+```
+"Use integrations-specialist to create a webhook handler for
+receiving store inventory updates. Include signature verification
+and idempotency handling."
+```
+
+### Debugging External Service Issues
+
+```
+"Use integrations-specialist to debug why the Gemini API calls
+are intermittently failing with timeout errors. Check connection
+pooling, retry logic, and error handling."
+```
+
+## Integration Patterns
+
+### REST API Client Pattern
+
+```typescript
+// src/services/external/storeApi.server.ts
+import { env } from '@/config/env';
+import { log } from '@/services/logger.server';
+
+interface StoreApiConfig {
+  baseUrl: string;
+  apiKey: string;
+  timeout: number;
+}
+
+class StoreApiClient {
+  private config: StoreApiConfig;
+
+  constructor(config: StoreApiConfig) {
+    this.config = config;
+  }
+
+  async getStoreLocations(storeId: string): Promise<StoreLocation[]> {
+    const url = `${this.config.baseUrl}/stores/${storeId}/locations`;
+
+    try {
+      const response = await fetch(url, {
+        headers: {
+          Authorization: `Bearer ${this.config.apiKey}`,
+          'Content-Type': 'application/json',
+        },
+        signal: AbortSignal.timeout(this.config.timeout),
+      });
+
+      if (!response.ok) {
+        throw new ExternalApiError(`Store API error: ${response.status}`, response.status);
+      }
+
+      return response.json();
+    } catch (error) {
+      log.error({ error, storeId }, 'Failed to fetch store locations');
+      throw error;
+    }
+  }
+}
+
+export const storeApiClient = new StoreApiClient({
+  baseUrl: env.STORE_API_BASE_URL,
+  apiKey: env.STORE_API_KEY,
+  timeout: 10000,
+});
+```
+
+### Webhook Handler Pattern
+
+```typescript
+// src/routes/webhooks.routes.ts
+import { Router } from 'express';
+import crypto from 'crypto';
+import { env } from '@/config/env';
+
+const router = Router();
+
+function verifyWebhookSignature(payload: string, signature: string, secret: string): boolean {
+  const expected = crypto.createHmac('sha256', secret).update(payload).digest('hex');
+  return crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(`sha256=${expected}`));
+}
+
+router.post('/store-updates', async (req, res, next) => {
+  try {
+    const signature = req.headers['x-webhook-signature'] as string;
+    const payload = JSON.stringify(req.body);
+
+    if (!verifyWebhookSignature(payload, signature, env.WEBHOOK_SECRET)) {
+      return res.status(401).json({ error: 'Invalid signature' });
+    }
+
+    // Process webhook with idempotency check
+    const eventId = req.headers['x-event-id'] as string;
+    const alreadyProcessed = await checkIdempotencyKey(eventId);
+
+    if (alreadyProcessed) {
+      return res.status(200).json({ status: 'already_processed' });
+    }
+
+    await processStoreUpdate(req.body);
+    await markEventProcessed(eventId);
+
+    res.status(200).json({ status: 'processed' });
+  } catch (error) {
+    next(error);
+  }
+});
+```
+
+### OAuth Flow Pattern
+
+```typescript
+// src/services/oauth/googleOAuth.server.ts
+import { OAuth2Client } from 'google-auth-library';
+import { env } from '@/config/env';
+
+const oauth2Client = new OAuth2Client(
+  env.GOOGLE_CLIENT_ID,
+  env.GOOGLE_CLIENT_SECRET,
+  env.GOOGLE_REDIRECT_URI,
+);
+
+export function getAuthorizationUrl(): string {
+  return oauth2Client.generateAuthUrl({
+    access_type: 'offline',
+    scope: ['email', 'profile'],
+    prompt: 'consent',
+  });
+}
+
+export async function exchangeCodeForTokens(code: string) {
+  const { tokens } = await oauth2Client.getToken(code);
+  return tokens;
+}
+
+export async function refreshAccessToken(refreshToken: string) {
+  oauth2Client.setCredentials({ refresh_token: refreshToken });
+  const { credentials } = await oauth2Client.refreshAccessToken();
+  return credentials;
+}
+```
+
+## Error Handling for External Services
+
+### Custom Error Classes
+
+```typescript
+// src/services/external/errors.ts
+export class ExternalApiError extends Error {
+  constructor(
+    message: string,
+    public statusCode: number,
+    public retryable: boolean = false,
+  ) {
+    super(message);
+    this.name = 'ExternalApiError';
+  }
+}
+
+export class RateLimitError extends ExternalApiError {
+  constructor(
+    message: string,
+    public retryAfter: number,
+  ) {
+    super(message, 429, true);
+    this.name = 'RateLimitError';
+  }
+}
+```
+
+### Retry with Exponential Backoff
+
+```typescript
+async function fetchWithRetry<T>(
+  fn: () => Promise<T>,
+  options: { maxRetries: number; baseDelay: number },
+): Promise<T> {
+  let lastError: Error;
+
+  for (let attempt = 0; attempt <= options.maxRetries; attempt++) {
+    try {
+      return await fn();
+    } catch (error) {
+      lastError = error as Error;
+
+      if (error instanceof ExternalApiError && !error.retryable) {
+        throw error;
+      }
+
+      if (attempt < options.maxRetries) {
+        const delay = options.baseDelay * Math.pow(2, attempt);
+        await new Promise((resolve) => setTimeout(resolve, delay));
+      }
+    }
+  }
+
+  throw lastError!;
+}
+```
+
+## Rate Limiting Strategies
+
+### Token Bucket Pattern
+
+```typescript
+class RateLimiter {
+  private tokens: number;
+  private lastRefill: number;
+  private readonly maxTokens: number;
+  private readonly refillRate: number; // tokens per second
+
+  constructor(maxTokens: number, refillRate: number) {
+    this.maxTokens = maxTokens;
+    this.tokens = maxTokens;
+    this.refillRate = refillRate;
+    this.lastRefill = Date.now();
+  }
+
+  async acquire(): Promise<void> {
+    this.refill();
+
+    if (this.tokens < 1) {
+      const waitTime = ((1 - this.tokens) / this.refillRate) * 1000;
+      await new Promise((resolve) => setTimeout(resolve, waitTime));
+      this.refill();
+    }
+
+    this.tokens -= 1;
+  }
+
+  private refill(): void {
+    const now = Date.now();
+    const elapsed = (now - this.lastRefill) / 1000;
+    this.tokens = Math.min(this.maxTokens, this.tokens + elapsed * this.refillRate);
+    this.lastRefill = now;
+  }
+}
+```
+
+## Testing Integrations
+
+### Mocking External Services
+
+```typescript
+// src/tests/mocks/storeApi.mock.ts
+import { vi } from 'vitest';
+
+export const mockStoreApiClient = {
+  getStoreLocations: vi.fn(),
+};
+
+vi.mock('@/services/external/storeApi.server', () => ({
+  storeApiClient: mockStoreApiClient,
+}));
+```
+
+### Integration Test with Real Service
+
+```typescript
+// src/tests/integration/storeApi.integration.test.ts
+describe('Store API Integration', () => {
+  it.skipIf(!env.STORE_API_KEY)('fetches real store locations', async () => {
+    const locations = await storeApiClient.getStoreLocations('test-store');
+    expect(locations).toBeInstanceOf(Array);
+  });
+});
+```
+
+## MCP Tools for Integrations
+
+### Gitea Integration
+
+```
+// List repositories
+mcp__gitea-projectium__list_my_repos()
+
+// Create issue
+mcp__gitea-projectium__create_issue({
+  owner: "projectium",
+  repo: "flyer-crawler",
+  title: "Issue title",
+  body: "Issue description"
+})
+```
+
+### Bugsink Integration
+
+```
+// List projects
+mcp__bugsink__list_projects()
+
+// Get issue details
+mcp__bugsink__get_issue({ issue_id: "..." })
+
+// Get stacktrace
+mcp__bugsink__get_stacktrace({ event_id: "..." })
+```
+
+## Security Considerations
+
+### API Key Storage
+
+- Never commit API keys to version control
+- Use environment variables via `src/config/env.ts`
+- Rotate keys periodically
+- Use separate keys for dev/test/prod
+
+### Webhook Security
+
+- Always verify webhook signatures
+- Use HTTPS for webhook endpoints
+- Implement idempotency
+- Log webhook events for audit
+
+### OAuth Security
+
+- Use state parameter to prevent CSRF
+- Store tokens securely (encrypted at rest)
+- Implement token refresh before expiration
+- Validate token scopes
+
+## Related Documentation
+
+- [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
+- [SECURITY-DEBUG-GUIDE.md](./SECURITY-DEBUG-GUIDE.md) - Security patterns
+- [AI-USAGE-GUIDE.md](./AI-USAGE-GUIDE.md) - Gemini API integration
+- [../adr/0041-ai-gemini-integration-architecture.md](../adr/0041-ai-gemini-integration-architecture.md) - AI integration ADR
+- [../adr/0016-api-security-hardening.md](../adr/0016-api-security-hardening.md) - API security
+- [../adr/0048-authentication-strategy.md](../adr/0048-authentication-strategy.md) - Authentication

docs/subagents/OVERVIEW.md

@@ -89,6 +89,47 @@ Or:
 
 Claude will automatically invoke the appropriate subagent with the relevant context.
 
+## Quick Reference Decision Tree
+
+Use this flowchart to quickly identify the right subagent:
+
+```
+What do you need to do?
+|
++-- Write/modify code? ----------------> Is it database-related?
+|                                        |
+|                                        +-- Yes -> db-dev
+|                                        +-- No --> Is it frontend?
+|                                                   |
+|                                                   +-- Yes -> frontend-specialist
+|                                                   +-- No --> Is it AI/Gemini?
+|                                                              |
+|                                                              +-- Yes -> ai-usage
+|                                                              +-- No --> coder
+|
++-- Test something? -------------------> Write new tests? -> testwriter
+|                                        Find bugs/vulnerabilities? -> tester
+|                                        Review existing code? -> code-reviewer
+|
++-- Debug an issue? -------------------> Production error? -> log-debug
+|                                        Database slow? -> db-admin
+|                                        External API failing? -> integrations-specialist
+|                                        AI extraction failing? -> ai-usage
+|
++-- Infrastructure/Deployment? --------> Container/CI/CD? -> devops
+|                                        Resource optimization? -> infra-architect
+|                                        Background jobs? -> bg-worker
+|
++-- Documentation? --------------------> User-facing docs? -> documenter
+|                                        ADRs/Technical specs? -> describer-for-ai
+|                                        Feature planning? -> planner
+|                                        User stories? -> product-owner
+|
++-- Security? -------------------------> security-engineer
+|
++-- Design/UX? ------------------------> uiux-designer
+```
+
 ## Subagent Selection Guide
 
 ### Which Subagent Should I Use?
@@ -183,12 +224,26 @@ Subagents can pass information back to the main conversation and to each other t
 
 ## Related Documentation
 
-- [CODER-GUIDE.md](./CODER-GUIDE.md) - Working with the coder subagent
-- [TESTER-GUIDE.md](./TESTER-GUIDE.md) - Testing strategies and patterns
-- [DATABASE-GUIDE.md](./DATABASE-GUIDE.md) - Database development workflows
-- [DEVOPS-GUIDE.md](./DEVOPS-GUIDE.md) - DevOps and deployment workflows
+### Subagent Guides
+
+| Guide                                                | Subagents Covered                                     |
+| ---------------------------------------------------- | ----------------------------------------------------- |
+| [CODER-GUIDE.md](./CODER-GUIDE.md)                   | coder                                                 |
+| [TESTER-GUIDE.md](./TESTER-GUIDE.md)                 | tester, testwriter                                    |
+| [DATABASE-GUIDE.md](./DATABASE-GUIDE.md)             | db-dev, db-admin                                      |
+| [DEVOPS-GUIDE.md](./DEVOPS-GUIDE.md)                 | devops, infra-architect, bg-worker                    |
+| [FRONTEND-GUIDE.md](./FRONTEND-GUIDE.md)             | frontend-specialist, uiux-designer                    |
+| [SECURITY-DEBUG-GUIDE.md](./SECURITY-DEBUG-GUIDE.md) | security-engineer, log-debug, code-reviewer           |
+| [AI-USAGE-GUIDE.md](./AI-USAGE-GUIDE.md)             | ai-usage                                              |
+| [INTEGRATIONS-GUIDE.md](./INTEGRATIONS-GUIDE.md)     | integrations-specialist, tools-integration-specialist |
+| [DOCUMENTATION-GUIDE.md](./DOCUMENTATION-GUIDE.md)   | documenter, describer-for-ai, planner, product-owner  |
+
+### Project Documentation
+
 - [../adr/index.md](../adr/index.md) - Architecture Decision Records
-- [../TESTING.md](../TESTING.md) - Testing guide
+- [../development/TESTING.md](../development/TESTING.md) - Testing guide
+- [../development/CODE-PATTERNS.md](../development/CODE-PATTERNS.md) - Code patterns reference
+- [../architecture/OVERVIEW.md](../architecture/OVERVIEW.md) - System architecture
 
 ## Troubleshooting
 

docs/subagents/SECURITY-DEBUG-GUIDE.md

@@ -6,6 +6,16 @@ This guide covers security and debugging-focused subagents:
 - **log-debug**: Production errors, observability, Bugsink/Sentry analysis
 - **code-reviewer**: Code quality, security review, best practices
 
+## Quick Reference
+
+| Aspect          | security-engineer                  | log-debug                                | code-reviewer               |
+| --------------- | ---------------------------------- | ---------------------------------------- | --------------------------- |
+| **Primary Use** | Security audits, OWASP             | Production debugging                     | Code quality review         |
+| **Key ADRs**    | ADR-016 (Security), ADR-032 (Rate) | ADR-050 (Observability)                  | ADR-034, ADR-035 (Patterns) |
+| **MCP Tools**   | N/A                                | `mcp__bugsink__*`, `mcp__localerrors__*` | N/A                         |
+| **Key Checks**  | Auth, input validation, CORS       | Logs, stacktraces, error patterns        | Patterns, tests, security   |
+| **Delegate To** | `coder` (fix issues)               | `devops` (infra), `coder` (fixes)        | `coder`, `testwriter`       |
+
 ## The security-engineer Subagent
 
 ### When to Use
@@ -432,8 +442,10 @@ tail -f /var/log/postgresql/postgresql-$(date +%Y-%m-%d).log | grep "duration:"
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
 - [DEVOPS-GUIDE.md](./DEVOPS-GUIDE.md) - Infrastructure debugging
+- [TESTER-GUIDE.md](./TESTER-GUIDE.md) - Security testing
 - [../adr/0016-api-security-hardening.md](../adr/0016-api-security-hardening.md) - Security ADR
 - [../adr/0032-rate-limiting-strategy.md](../adr/0032-rate-limiting-strategy.md) - Rate limiting
-- [../adr/0015-application-performance-monitoring-and-error-tracking.md](../adr/0015-application-performance-monitoring-and-error-tracking.md) - Monitoring ADR
+- [../adr/0015-error-tracking-and-observability.md](../adr/0015-error-tracking-and-observability.md) - Monitoring ADR
 - [../adr/0050-postgresql-function-observability.md](../adr/0050-postgresql-function-observability.md) - Database observability
-- [../BARE-METAL-SETUP.md](../BARE-METAL-SETUP.md) - Production setup
+- [../operations/BARE-METAL-SETUP.md](../operations/BARE-METAL-SETUP.md) - Production setup
+- [../tools/BUGSINK-SETUP.md](../tools/BUGSINK-SETUP.md) - Bugsink configuration

docs/subagents/TESTER-GUIDE.md

@@ -5,6 +5,17 @@ This guide covers two related but distinct subagents for testing in the Flyer Cr
 - **tester**: Adversarial testing to find edge cases, race conditions, and vulnerabilities
 - **testwriter**: Creating comprehensive test suites for features and fixes
 
+## Quick Reference
+
+| Aspect           | tester                                       | testwriter                                 |
+| ---------------- | -------------------------------------------- | ------------------------------------------ |
+| **Primary Use**  | Find bugs, security issues, edge cases       | Create test suites, improve coverage       |
+| **Key Files**    | N/A (analysis-focused)                       | `*.test.ts`, `src/tests/utils/`            |
+| **Key ADRs**     | ADR-010 (Testing), ADR-040 (Test Economics)  | ADR-010 (Testing), ADR-045 (Test Fixtures) |
+| **Test Command** | `podman exec -it flyer-crawler-dev npm test` | Same                                       |
+| **Test Stack**   | Vitest, Supertest, Testing Library           | Same                                       |
+| **Delegate To**  | `testwriter` (write tests for findings)      | `coder` (fix failing tests)                |
+
 ## Understanding the Difference
 
 | Aspect          | tester                          | testwriter                      |
@@ -399,6 +410,7 @@ A typical workflow for thorough testing:
 
 - [OVERVIEW.md](./OVERVIEW.md) - Subagent system overview
 - [CODER-GUIDE.md](./CODER-GUIDE.md) - Working with the coder subagent
-- [../TESTING.md](../TESTING.md) - Testing guide
+- [SECURITY-DEBUG-GUIDE.md](./SECURITY-DEBUG-GUIDE.md) - Security testing and code review
+- [../development/TESTING.md](../development/TESTING.md) - Testing guide
 - [../adr/0010-testing-strategy-and-standards.md](../adr/0010-testing-strategy-and-standards.md) - Testing ADR
 - [../adr/0040-testing-economics-and-priorities.md](../adr/0040-testing-economics-and-priorities.md) - Testing priorities

package.json

@@ -1,8 +1,11 @@
 {
   "name": "flyer-crawler",
   "private": true,
-  "version": "0.12.20",
+  "version": "0.14.3",
   "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",

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/FeatureFlag.test.tsx

@@ -0,0 +1,378 @@
+// src/components/FeatureFlag.test.tsx
+/**
+ * Unit tests for the FeatureFlag component (ADR-024).
+ *
+ * These tests verify:
+ * - Component renders children when feature is enabled
+ * - Component hides children when feature is disabled
+ * - Component renders fallback when feature is disabled
+ * - Component returns null when disabled and no fallback provided
+ * - All feature flag names are properly handled
+ */
+
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+
+// Mock the useFeatureFlag hook
+const mockUseFeatureFlag = vi.fn();
+
+vi.mock('../hooks/useFeatureFlag', () => ({
+  useFeatureFlag: (flagName: string) => mockUseFeatureFlag(flagName),
+}));
+
+// Import after mocking
+import { FeatureFlag } from './FeatureFlag';
+
+describe('FeatureFlag component', () => {
+  beforeEach(() => {
+    mockUseFeatureFlag.mockReset();
+    // Default to disabled
+    mockUseFeatureFlag.mockReturnValue(false);
+  });
+
+  describe('when feature is enabled', () => {
+    beforeEach(() => {
+      mockUseFeatureFlag.mockReturnValue(true);
+    });
+
+    it('should render children', () => {
+      render(
+        <FeatureFlag feature="newDashboard">
+          <div data-testid="new-feature">New Feature Content</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.getByTestId('new-feature')).toBeInTheDocument();
+      expect(screen.getByText('New Feature Content')).toBeInTheDocument();
+    });
+
+    it('should not render fallback', () => {
+      render(
+        <FeatureFlag feature="newDashboard" fallback={<div data-testid="fallback">Fallback</div>}>
+          <div data-testid="new-feature">New Feature</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.getByTestId('new-feature')).toBeInTheDocument();
+      expect(screen.queryByTestId('fallback')).not.toBeInTheDocument();
+    });
+
+    it('should render multiple children', () => {
+      render(
+        <FeatureFlag feature="newDashboard">
+          <div data-testid="child-1">Child 1</div>
+          <div data-testid="child-2">Child 2</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.getByTestId('child-1')).toBeInTheDocument();
+      expect(screen.getByTestId('child-2')).toBeInTheDocument();
+    });
+
+    it('should render text content', () => {
+      render(<FeatureFlag feature="newDashboard">Just some text</FeatureFlag>);
+
+      expect(screen.getByText('Just some text')).toBeInTheDocument();
+    });
+
+    it('should call useFeatureFlag with correct flag name', () => {
+      render(
+        <FeatureFlag feature="betaRecipes">
+          <div>Content</div>
+        </FeatureFlag>,
+      );
+
+      expect(mockUseFeatureFlag).toHaveBeenCalledWith('betaRecipes');
+    });
+  });
+
+  describe('when feature is disabled', () => {
+    beforeEach(() => {
+      mockUseFeatureFlag.mockReturnValue(false);
+    });
+
+    it('should not render children', () => {
+      render(
+        <FeatureFlag feature="newDashboard">
+          <div data-testid="new-feature">New Feature Content</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.queryByTestId('new-feature')).not.toBeInTheDocument();
+      expect(screen.queryByText('New Feature Content')).not.toBeInTheDocument();
+    });
+
+    it('should render fallback when provided', () => {
+      render(
+        <FeatureFlag
+          feature="newDashboard"
+          fallback={<div data-testid="fallback">Legacy Feature</div>}
+        >
+          <div data-testid="new-feature">New Feature</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.queryByTestId('new-feature')).not.toBeInTheDocument();
+      expect(screen.getByTestId('fallback')).toBeInTheDocument();
+      expect(screen.getByText('Legacy Feature')).toBeInTheDocument();
+    });
+
+    it('should render null when no fallback is provided', () => {
+      const { container } = render(
+        <FeatureFlag feature="newDashboard">
+          <div data-testid="new-feature">New Feature</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.queryByTestId('new-feature')).not.toBeInTheDocument();
+      // Container should be empty (just the wrapper)
+      expect(container.innerHTML).toBe('');
+    });
+
+    it('should render complex fallback components', () => {
+      const FallbackComponent = () => (
+        <div data-testid="complex-fallback">
+          <h1>Legacy Dashboard</h1>
+          <p>This is the old version</p>
+        </div>
+      );
+
+      render(
+        <FeatureFlag feature="newDashboard" fallback={<FallbackComponent />}>
+          <div data-testid="new-feature">New Dashboard</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.queryByTestId('new-feature')).not.toBeInTheDocument();
+      expect(screen.getByTestId('complex-fallback')).toBeInTheDocument();
+      expect(screen.getByText('Legacy Dashboard')).toBeInTheDocument();
+      expect(screen.getByText('This is the old version')).toBeInTheDocument();
+    });
+
+    it('should render text fallback', () => {
+      render(
+        <FeatureFlag feature="newDashboard" fallback="Feature not available">
+          <div>New Feature</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.getByText('Feature not available')).toBeInTheDocument();
+    });
+  });
+
+  describe('with different feature flags', () => {
+    it('should work with newDashboard flag', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      render(
+        <FeatureFlag feature="newDashboard">
+          <div data-testid="dashboard">Dashboard</div>
+        </FeatureFlag>,
+      );
+
+      expect(mockUseFeatureFlag).toHaveBeenCalledWith('newDashboard');
+      expect(screen.getByTestId('dashboard')).toBeInTheDocument();
+    });
+
+    it('should work with betaRecipes flag', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      render(
+        <FeatureFlag feature="betaRecipes">
+          <div data-testid="recipes">Recipes</div>
+        </FeatureFlag>,
+      );
+
+      expect(mockUseFeatureFlag).toHaveBeenCalledWith('betaRecipes');
+      expect(screen.getByTestId('recipes')).toBeInTheDocument();
+    });
+
+    it('should work with experimentalAi flag', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      render(
+        <FeatureFlag feature="experimentalAi">
+          <div data-testid="ai">AI Feature</div>
+        </FeatureFlag>,
+      );
+
+      expect(mockUseFeatureFlag).toHaveBeenCalledWith('experimentalAi');
+      expect(screen.getByTestId('ai')).toBeInTheDocument();
+    });
+
+    it('should work with debugMode flag', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      render(
+        <FeatureFlag feature="debugMode">
+          <div data-testid="debug">Debug Panel</div>
+        </FeatureFlag>,
+      );
+
+      expect(mockUseFeatureFlag).toHaveBeenCalledWith('debugMode');
+      expect(screen.getByTestId('debug')).toBeInTheDocument();
+    });
+  });
+
+  describe('real-world usage patterns', () => {
+    it('should work for A/B testing pattern', () => {
+      mockUseFeatureFlag.mockReturnValue(false);
+
+      render(
+        <FeatureFlag feature="newDashboard" fallback={<div data-testid="old-ui">Old UI</div>}>
+          <div data-testid="new-ui">New UI</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.queryByTestId('new-ui')).not.toBeInTheDocument();
+      expect(screen.getByTestId('old-ui')).toBeInTheDocument();
+    });
+
+    it('should work for gradual rollout pattern', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      render(
+        <div>
+          <nav data-testid="nav">Navigation</nav>
+          <FeatureFlag feature="betaRecipes">
+            <aside data-testid="recipe-suggestions">Recipe Suggestions</aside>
+          </FeatureFlag>
+          <main data-testid="main">Main Content</main>
+        </div>,
+      );
+
+      expect(screen.getByTestId('nav')).toBeInTheDocument();
+      expect(screen.getByTestId('recipe-suggestions')).toBeInTheDocument();
+      expect(screen.getByTestId('main')).toBeInTheDocument();
+    });
+
+    it('should work nested within conditional logic', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+      const isLoggedIn = true;
+
+      render(
+        <div>
+          {isLoggedIn && (
+            <FeatureFlag
+              feature="experimentalAi"
+              fallback={<div data-testid="standard">Standard</div>}
+            >
+              <div data-testid="ai-search">AI Search</div>
+            </FeatureFlag>
+          )}
+        </div>,
+      );
+
+      expect(screen.getByTestId('ai-search')).toBeInTheDocument();
+    });
+
+    it('should work with multiple FeatureFlag components', () => {
+      // First call for newDashboard returns true
+      // Second call for debugMode returns false
+      mockUseFeatureFlag.mockImplementation((flag: string) => {
+        if (flag === 'newDashboard') return true;
+        if (flag === 'debugMode') return false;
+        return false;
+      });
+
+      render(
+        <div>
+          <FeatureFlag feature="newDashboard">
+            <div data-testid="new-dashboard">New Dashboard</div>
+          </FeatureFlag>
+          <FeatureFlag feature="debugMode" fallback={<div data-testid="no-debug">No Debug</div>}>
+            <div data-testid="debug-panel">Debug Panel</div>
+          </FeatureFlag>
+        </div>,
+      );
+
+      expect(screen.getByTestId('new-dashboard')).toBeInTheDocument();
+      expect(screen.queryByTestId('debug-panel')).not.toBeInTheDocument();
+      expect(screen.getByTestId('no-debug')).toBeInTheDocument();
+    });
+  });
+
+  describe('edge cases', () => {
+    it('should handle undefined fallback gracefully', () => {
+      mockUseFeatureFlag.mockReturnValue(false);
+
+      const { container } = render(
+        <FeatureFlag feature="newDashboard" fallback={undefined}>
+          <div data-testid="new-feature">New Feature</div>
+        </FeatureFlag>,
+      );
+
+      expect(screen.queryByTestId('new-feature')).not.toBeInTheDocument();
+      expect(container.innerHTML).toBe('');
+    });
+
+    it('should handle null children gracefully when enabled', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      const { container } = render(<FeatureFlag feature="newDashboard">{null}</FeatureFlag>);
+
+      // Should render nothing (null)
+      expect(container.innerHTML).toBe('');
+    });
+
+    it('should handle empty children when enabled', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      const { container } = render(
+        <FeatureFlag feature="newDashboard">
+          <></>
+        </FeatureFlag>,
+      );
+
+      // Should render the empty fragment
+      expect(container.innerHTML).toBe('');
+    });
+
+    it('should handle boolean children', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      // React ignores boolean children, so nothing should render
+      const { container } = render(
+        <FeatureFlag feature="newDashboard">{true as unknown as React.ReactNode}</FeatureFlag>,
+      );
+
+      expect(container.innerHTML).toBe('');
+    });
+
+    it('should handle number children', () => {
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      render(<FeatureFlag feature="newDashboard">{42}</FeatureFlag>);
+
+      expect(screen.getByText('42')).toBeInTheDocument();
+    });
+  });
+
+  describe('re-rendering behavior', () => {
+    it('should update when feature flag value changes', () => {
+      const { rerender } = render(
+        <FeatureFlag feature="newDashboard" fallback={<div data-testid="fallback">Fallback</div>}>
+          <div data-testid="new-feature">New Feature</div>
+        </FeatureFlag>,
+      );
+
+      // Initially disabled
+      expect(screen.queryByTestId('new-feature')).not.toBeInTheDocument();
+      expect(screen.getByTestId('fallback')).toBeInTheDocument();
+
+      // Enable the flag
+      mockUseFeatureFlag.mockReturnValue(true);
+
+      rerender(
+        <FeatureFlag feature="newDashboard" fallback={<div data-testid="fallback">Fallback</div>}>
+          <div data-testid="new-feature">New Feature</div>
+        </FeatureFlag>,
+      );
+
+      // Now enabled
+      expect(screen.getByTestId('new-feature')).toBeInTheDocument();
+      expect(screen.queryByTestId('fallback')).not.toBeInTheDocument();
+    });
+  });
+});

src/components/FeatureFlag.tsx

@@ -0,0 +1,75 @@
+// src/components/FeatureFlag.tsx
+import type { ReactNode } from 'react';
+import { useFeatureFlag, type FeatureFlagName } from '../hooks/useFeatureFlag';
+
+/**
+ * Props for the FeatureFlag component.
+ */
+export interface FeatureFlagProps {
+  /**
+   * The name of the feature flag to check.
+   * Must be a valid FeatureFlagName defined in config.featureFlags.
+   */
+  feature: FeatureFlagName;
+
+  /**
+   * Content to render when the feature flag is enabled.
+   */
+  children: ReactNode;
+
+  /**
+   * Optional content to render when the feature flag is disabled.
+   * If not provided, nothing is rendered when the flag is disabled.
+   * @default null
+   */
+  fallback?: ReactNode;
+}
+
+/**
+ * Declarative component for conditional rendering based on feature flag state.
+ *
+ * This component provides a clean, declarative API for rendering content based
+ * on whether a feature flag is enabled or disabled. It uses the useFeatureFlag
+ * hook internally and supports an optional fallback for disabled features.
+ *
+ * @param props - Component props
+ * @param props.feature - The feature flag name to check
+ * @param props.children - Content rendered when feature is enabled
+ * @param props.fallback - Content rendered when feature is disabled (default: null)
+ *
+ * @example
+ * // Basic usage - show new feature when enabled
+ * <FeatureFlag feature="newDashboard">
+ *   <NewDashboard />
+ * </FeatureFlag>
+ *
+ * @example
+ * // With fallback - show alternative when feature is disabled
+ * <FeatureFlag feature="newDashboard" fallback={<LegacyDashboard />}>
+ *   <NewDashboard />
+ * </FeatureFlag>
+ *
+ * @example
+ * // Wrap a section of UI that should only appear when flag is enabled
+ * <div className="sidebar">
+ *   <Navigation />
+ *   <FeatureFlag feature="betaRecipes">
+ *     <RecipeSuggestions />
+ *   </FeatureFlag>
+ *   <Footer />
+ * </div>
+ *
+ * @example
+ * // Combine with other conditional logic
+ * {isLoggedIn && (
+ *   <FeatureFlag feature="experimentalAi" fallback={<StandardSearch />}>
+ *     <AiPoweredSearch />
+ *   </FeatureFlag>
+ * )}
+ *
+ * @see docs/adr/0024-feature-flagging-strategy.md
+ */
+export function FeatureFlag({ feature, children, fallback = null }: FeatureFlagProps): ReactNode {
+  const isEnabled = useFeatureFlag(feature);
+  return isEnabled ? children : fallback;
+}

src/config.ts

@@ -24,6 +24,28 @@ const config = {
     debug: import.meta.env.VITE_SENTRY_DEBUG === 'true',
     enabled: import.meta.env.VITE_SENTRY_ENABLED !== 'false',
   },
+  /**
+   * Feature flags for conditional feature rendering (ADR-024).
+   *
+   * All flags default to false (disabled) when the environment variable is not set
+   * or is set to any value other than 'true'. This opt-in model ensures features
+   * are explicitly enabled, preventing accidental exposure of incomplete features.
+   *
+   * Environment variables follow the naming convention: VITE_FEATURE_SNAKE_CASE
+   * Config properties use camelCase for consistency with JavaScript conventions.
+   *
+   * @see docs/adr/0024-feature-flagging-strategy.md
+   */
+  featureFlags: {
+    /** Enable the redesigned dashboard UI (VITE_FEATURE_NEW_DASHBOARD) */
+    newDashboard: import.meta.env.VITE_FEATURE_NEW_DASHBOARD === 'true',
+    /** Enable beta recipe features (VITE_FEATURE_BETA_RECIPES) */
+    betaRecipes: import.meta.env.VITE_FEATURE_BETA_RECIPES === 'true',
+    /** Enable experimental AI features (VITE_FEATURE_EXPERIMENTAL_AI) */
+    experimentalAi: import.meta.env.VITE_FEATURE_EXPERIMENTAL_AI === 'true',
+    /** Enable debug mode UI elements (VITE_FEATURE_DEBUG_MODE) */
+    debugMode: import.meta.env.VITE_FEATURE_DEBUG_MODE === 'true',
+  },
 };
 
 export default config;

src/config/env.ts

@@ -155,6 +155,38 @@ const sentrySchema = z.object({
   debug: booleanString(false),
 });
 
+/**
+ * Feature flags configuration schema (ADR-024).
+ *
+ * All flags default to `false` (disabled) for safety, following an opt-in model.
+ * Set the corresponding environment variable to 'true' to enable a feature.
+ *
+ * Environment variable naming convention: `FEATURE_SNAKE_CASE`
+ * Config property naming convention: `camelCase`
+ *
+ * @example
+ * // Enable via environment:
+ * FEATURE_BUGSINK_SYNC=true
+ *
+ * // Check in code:
+ * import { config } from './config/env';
+ * if (config.featureFlags.bugsinkSync) { ... }
+ */
+const featureFlagsSchema = z.object({
+  /** Enable Bugsink error sync integration (FEATURE_BUGSINK_SYNC) */
+  bugsinkSync: booleanString(false),
+  /** Enable advanced RBAC features (FEATURE_ADVANCED_RBAC) */
+  advancedRbac: booleanString(false),
+  /** Enable new dashboard experience (FEATURE_NEW_DASHBOARD) */
+  newDashboard: booleanString(false),
+  /** Enable beta recipe features (FEATURE_BETA_RECIPES) */
+  betaRecipes: booleanString(false),
+  /** Enable experimental AI features (FEATURE_EXPERIMENTAL_AI) */
+  experimentalAi: booleanString(false),
+  /** Enable debug mode for development (FEATURE_DEBUG_MODE) */
+  debugMode: booleanString(false),
+});
+
 /**
  * Complete environment configuration schema.
  */
@@ -170,6 +202,7 @@ const envSchema = z.object({
   worker: workerSchema,
   server: serverSchema,
   sentry: sentrySchema,
+  featureFlags: featureFlagsSchema,
 });
 
 export type EnvConfig = z.infer<typeof envSchema>;
@@ -244,6 +277,14 @@ function loadEnvVars(): unknown {
       environment: process.env.SENTRY_ENVIRONMENT || process.env.NODE_ENV,
       debug: process.env.SENTRY_DEBUG,
     },
+    featureFlags: {
+      bugsinkSync: process.env.FEATURE_BUGSINK_SYNC,
+      advancedRbac: process.env.FEATURE_ADVANCED_RBAC,
+      newDashboard: process.env.FEATURE_NEW_DASHBOARD,
+      betaRecipes: process.env.FEATURE_BETA_RECIPES,
+      experimentalAi: process.env.FEATURE_EXPERIMENTAL_AI,
+      debugMode: process.env.FEATURE_DEBUG_MODE,
+    },
   };
 }
 
@@ -391,3 +432,33 @@ export const isGoogleOAuthConfigured = !!config.google.clientId && !!config.goog
  * Returns true if GitHub OAuth is configured (both client ID and secret present).
  */
 export const isGithubOAuthConfigured = !!config.github.clientId && !!config.github.clientSecret;
+
+// --- Feature Flag Helpers (ADR-024) ---
+
+/**
+ * Type representing valid feature flag names.
+ * Derived from the featureFlagsSchema for type safety.
+ */
+export type FeatureFlagName = keyof typeof config.featureFlags;
+
+/**
+ * Check if a feature flag is enabled.
+ *
+ * This is a convenience function for checking feature flag state.
+ * For more advanced usage (logging, all flags), use the featureFlags service.
+ *
+ * @param flagName - The name of the feature flag to check
+ * @returns boolean indicating if the feature is enabled
+ *
+ * @example
+ * ```typescript
+ * import { isFeatureFlagEnabled } from './config/env';
+ *
+ * if (isFeatureFlagEnabled('newDashboard')) {
+ *   // Use new dashboard
+ * }
+ * ```
+ */
+export function isFeatureFlagEnabled(flagName: FeatureFlagName): boolean {
+  return config.featureFlags[flagName];
+}

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 +1,862 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 },
+          { user_id: 'user-2', email: 'user2@example.com', role: 'admin' as const },
+        ],
+        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',
+        user: { user_id: 'user-123', email: 'test@example.com' },
+      };
+      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 = { role: 'admin', points: 100 };
+      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, status: 'public' };
+      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, status: 'needs_review' },
+        { flyer_id: 2, status: 'needs_review' },
+      ];
+      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 = {
+        enableNewUI: true,
+        enableBetaFeatures: 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.enableNewUI).toBe(true);
+        expect(result.data.flags.enableBetaFeatures).toBe(false);
+      }
+    });
+  });
+
+  // ==========================================================================
+  // BASE CONTROLLER INTEGRATION
+  // ==========================================================================
+
+  describe('BaseController integration', () => {
+    it('should use success helper for consistent response format', async () => {
+      // Arrange
+      const mockStats = { flyerCount: 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 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);
+      if (!result.success) {
+        expect(result.error.code).toBe('CONFLICT');
+        expect(result.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 +1,486 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    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(null);
+
+      // 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(false);
+
+      // 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 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_cents: 2500,
+    item_count: 5,
+    ...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 +1,333 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock category record.
+ */
+function createMockCategory(overrides: Record<string, unknown> = {}) {
+  return {
+    category_id: 1,
+    name: 'Dairy & Eggs',
+    description: 'Milk, cheese, eggs, and dairy products',
+    icon: 'dairy',
+    created_at: '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 +1,254 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 watched item deal.
+ */
+function createMockWatchedItemDeal(overrides: Record<string, unknown> = {}) {
+  return {
+    watched_item_id: 1,
+    master_item_id: 100,
+    item_name: 'Milk 2%',
+    current_price_cents: 350,
+    regular_price_cents: 450,
+    discount_percent: 22.2,
+    store_name: 'Superstore',
+    store_location_id: 5,
+    flyer_id: 10,
+    flyer_valid_from: '2024-01-15',
+    flyer_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({
+          watched_item_id: 2,
+          item_name: 'Bread',
+          current_price_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].current_price_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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      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,
+        user: {
+          user_id: 'custom-user-id',
+          email: 'custom@example.com',
+        },
+      };
+      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 +1,590 @@
+// 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, 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: () => () => {},
+  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';
+
+// Cast mocked modules for type-safe access
+const mockedDb = db as Mocked<typeof db>;
+
+// ============================================================================
+// 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 flyer object.
+ */
+function createMockFlyer(overrides: Record<string, unknown> = {}) {
+  return {
+    flyer_id: 1,
+    file_name: 'test-flyer.jpg',
+    image_url: '/uploads/flyers/test-flyer.jpg',
+    icon_url: '/uploads/flyers/icons/test-flyer.jpg',
+    checksum: 'abc123',
+    store_id: 1,
+    valid_from: '2024-01-01',
+    valid_to: '2024-01-07',
+    status: 'processed' as const,
+    item_count: 10,
+    uploaded_by: 'user-123',
+    store: {
+      store_id: 1,
+      name: 'Test Store',
+      logo_url: '/uploads/logos/store.jpg',
+      created_at: '2024-01-01T00:00:00.000Z',
+      updated_at: '2024-01-01T00:00:00.000Z',
+    },
+    locations: [],
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock flyer item object.
+ */
+function createMockFlyerItem(overrides: Record<string, unknown> = {}) {
+  return {
+    flyer_item_id: 1,
+    flyer_id: 1,
+    item: 'Test Product',
+    price_display: '$2.99',
+    price_in_cents: 299,
+    quantity: '1',
+    quantity_num: 1,
+    master_item_id: 100,
+    master_item_name: 'Test Master Item',
+    category_id: 5,
+    category_name: 'Dairy',
+    unit_price: { value: 299, unit: 'each' },
+    product_id: null,
+    view_count: 0,
+    click_count: 0,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('FlyerController', () => {
+  let controller: FlyerController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    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();
+
+      mockedDb.flyerRepo.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(mockedDb.flyerRepo.getFlyers).toHaveBeenCalledWith(
+        expect.anything(),
+        20, // default limit
+        0, // default offset
+      );
+    });
+
+    it('should respect custom pagination parameters', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDb.flyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 50, 10);
+
+      // Assert
+      expect(mockedDb.flyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 50, 10);
+    });
+
+    it('should cap limit at 100', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDb.flyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 200);
+
+      // Assert
+      expect(mockedDb.flyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 100, 0);
+    });
+
+    it('should floor limit to minimum of 1', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDb.flyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, -5);
+
+      // Assert
+      expect(mockedDb.flyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 1, 0);
+    });
+
+    it('should normalize offset to 0 if negative', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDb.flyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 20, -10);
+
+      // Assert
+      expect(mockedDb.flyerRepo.getFlyers).toHaveBeenCalledWith(expect.anything(), 20, 0);
+    });
+
+    it('should floor decimal pagination values', async () => {
+      // Arrange
+      const request = createMockRequest();
+
+      mockedDb.flyerRepo.getFlyers.mockResolvedValue([]);
+
+      // Act
+      await controller.getFlyers(request, 15.9, 5.7);
+
+      // Assert
+      expect(mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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('test-flyer.jpg');
+      }
+      expect(mockedDb.flyerRepo.getFlyerById).toHaveBeenCalledWith(1);
+    });
+
+    it('should log successful retrieval', async () => {
+      // Arrange
+      const mockFlyer = createMockFlyer();
+      const mockLog = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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('Test Product');
+      }
+      expect(mockedDb.flyerRepo.getFlyerItems).toHaveBeenCalledWith(1, expect.anything());
+    });
+
+    it('should log item count', async () => {
+      // Arrange
+      const mockItems = [createMockFlyerItem()];
+      const mockLog = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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(mockedDb.flyerRepo.getFlyerItemsForFlyers).toHaveBeenCalledWith(
+        [1, 2, 3],
+        expect.anything(),
+      );
+    });
+
+    it('should log batch fetch details', async () => {
+      // Arrange
+      const mockItems = [createMockFlyerItem()];
+      const mockLog = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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(mockedDb.flyerRepo.countFlyerItemsForFlyers).toHaveBeenCalledWith(
+        [1, 2, 3],
+        expect.anything(),
+      );
+    });
+
+    it('should log count details', async () => {
+      // Arrange
+      const mockLog = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      // Make tracking fail
+      mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.trackFlyerItemInteraction.mockResolvedValue(undefined);
+
+      // Act
+      await controller.trackItemInteraction(42, { type: 'click' }, request);
+
+      // Assert
+      expect(mockedDb.flyerRepo.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();
+
+      mockedDb.flyerRepo.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 +1,457 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 admin user profile for testing.
+ */
+function createMockAdminProfile() {
+  return {
+    full_name: 'Admin User',
+    role: 'admin' as const,
+    user: {
+      user_id: 'admin-user-id',
+      email: 'admin@example.com',
+    },
+  };
+}
+
+/**
+ * Creates a mock achievement.
+ */
+function createMockAchievement(overrides: Record<string, unknown> = {}) {
+  return {
+    achievement_id: 1,
+    name: 'First-Upload',
+    description: 'Upload your first flyer',
+    points: 10,
+    icon: 'upload',
+    category: 'contribution',
+    created_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock user achievement.
+ */
+function createMockUserAchievement(overrides: Record<string, unknown> = {}) {
+  return {
+    user_achievement_id: 1,
+    user_id: 'test-user-id',
+    achievement_id: 1,
+    achievement_name: 'First-Upload',
+    achievement_description: 'Upload your first flyer',
+    points: 10,
+    earned_at: '2024-01-15T10:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock leaderboard user.
+ */
+function createMockLeaderboardUser(overrides: Record<string, unknown> = {}) {
+  return {
+    user_id: 'user-1',
+    display_name: 'Top User',
+    total_points: 150,
+    achievement_count: 8,
+    rank: 1,
+    ...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: 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, total_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({ user_achievement_id: 2, achievement_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].achievement_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,
+        user: {
+          user_id: 'custom-user-id',
+          email: 'custom@example.com',
+        },
+      };
+      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[]>> {
+    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 } 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 +1,616 @@
+// 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';
+
+// ============================================================================
+// 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.
+ */
+function createMockRequest(overrides: Partial<ExpressRequest> = {}): ExpressRequest {
+  return {
+    body: {},
+    params: {},
+    query: {},
+    user: createMockUserProfile(),
+    log: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 inventory item.
+ */
+function createMockInventoryItem(overrides: Record<string, unknown> = {}) {
+  return {
+    inventory_id: 1,
+    user_id: 'test-user-id',
+    item_name: 'Milk',
+    quantity: 1,
+    unit: 'L',
+    purchase_date: '2024-01-01',
+    expiry_date: '2024-01-15',
+    source: 'manual_entry' as const,
+    location: 'refrigerator' as const,
+    is_consumed: false,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('InventoryController', () => {
+  let controller: InventoryController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    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, 'refrigerator');
+
+      // Assert
+      expect(mockedExpiryService.getInventory).toHaveBeenCalledWith(
+        expect.objectContaining({ location: 'refrigerator' }),
+        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_entry',
+      });
+
+      // 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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      mockedExpiryService.addInventoryItem.mockResolvedValue(mockItem);
+
+      // Act
+      await controller.addInventoryItem(request, {
+        item_name: 'Milk',
+        source: 'manual_entry',
+      });
+
+      // 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 mockResult = {
+        expired: [],
+        expiring_today: [],
+        expiring_this_week: [createMockInventoryItem()],
+        expiring_this_month: [],
+      };
+      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 = [
+        { alert_method: 'email', days_before_expiry: 3, is_enabled: true },
+        { alert_method: 'push', days_before_expiry: 1, is_enabled: true },
+      ];
+      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 = { alert_method: 'email', days_before_expiry: 5, is_enabled: true };
+      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 mockResult = {
+        recipes: [{ recipe_id: 1, name: 'Test Recipe' }],
+        total: 1,
+        considered_items: [createMockInventoryItem()],
+      };
+      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_entry',
+      });
+
+      // 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 +1,476 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...overrides,
+  } as unknown as ExpressRequest;
+}
+
+/**
+ * Creates a mock master grocery item.
+ */
+function createMockMasterItem(overrides: Record<string, unknown> = {}) {
+  return {
+    master_item_id: 1,
+    name: 'Milk 2%',
+    category_id: 1,
+    category_name: 'Dairy & Eggs',
+    typical_shelf_life_days: 14,
+    storage_recommendation: 'refrigerator',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock dietary restriction.
+ */
+function createMockDietaryRestriction(overrides: Record<string, unknown> = {}) {
+  return {
+    restriction_id: 1,
+    name: 'Vegetarian',
+    description: 'No meat or fish',
+    icon: 'leaf',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock appliance.
+ */
+function createMockAppliance(overrides: Record<string, unknown> = {}) {
+  return {
+    appliance_id: 1,
+    name: 'Air Fryer',
+    icon: 'air-fryer',
+    category: 'cooking',
+    ...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_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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      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({ restriction_id: 2, name: 'Vegan' }),
+        createMockDietaryRestriction({ 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 +1,393 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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.
+ */
+function createMockPriceHistoryData(overrides: Record<string, unknown> = {}) {
+  return {
+    master_item_id: 1,
+    price_cents: 350,
+    flyer_start_date: '2024-01-15',
+    flyer_id: 10,
+    store_name: 'Superstore',
+    ...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({ flyer_start_date: '2024-01-08', price_cents: 399 }),
+        createMockPriceHistoryData({ master_item_id: 2, price_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_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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      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({ flyer_start_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 +1,531 @@
+// 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';
+
+// ============================================================================
+// 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: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 user reaction.
+ */
+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',
+    ...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,
+        user: {
+          user_id: 'custom-user-id',
+          email: 'custom@example.com',
+        },
+      };
+      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 +1,659 @@
+// 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';
+
+// ============================================================================
+// 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(),
+    file: undefined,
+    log: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+      bindings: vi.fn().mockReturnValue({ request_id: 'test-request-id' }),
+    },
+    ...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 receipt scan record.
+ */
+function createMockReceipt(overrides: Record<string, unknown> = {}) {
+  return {
+    receipt_id: 1,
+    user_id: 'test-user-id',
+    receipt_image_url: '/uploads/receipt-123.jpg',
+    status: 'processed' as const,
+    store_location_id: null,
+    transaction_date: '2024-01-15',
+    total_amount_cents: 5000,
+    tax_amount_cents: 500,
+    item_count: 5,
+    created_at: '2024-01-15T10:00:00.000Z',
+    updated_at: '2024-01-15T10:00:00.000Z',
+    processed_at: '2024-01-15T10:01:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock receipt item.
+ */
+function createMockReceiptItem(overrides: Record<string, unknown> = {}) {
+  return {
+    receipt_item_id: 1,
+    receipt_id: 1,
+    raw_text: 'Milk 2%',
+    quantity: 1,
+    price_cents: 350,
+    unit_price_cents: 350,
+    status: 'matched' as const,
+    master_item_id: 100,
+    product_id: 200,
+    match_confidence: 0.95,
+    created_at: '2024-01-15T10:00:00.000Z',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock processing log record.
+ */
+function createMockProcessingLog(overrides: Record<string, unknown> = {}) {
+  return {
+    log_id: 1,
+    receipt_id: 1,
+    status: 'processing',
+    message: 'Started processing receipt',
+    created_at: '2024-01-15T10:00:00.000Z',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('ReceiptController', () => {
+  let controller: ReceiptController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    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, 'processed');
+
+      // Assert
+      expect(mockedReceiptService.getReceipts).toHaveBeenCalledWith(
+        expect.objectContaining({ status: 'processed' }),
+        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();
+      const mockUpdatedItem = createMockReceiptItem({ status: 'confirmed', 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: 'confirmed',
+        match_confidence: 1.0,
+      });
+
+      // Assert
+      expect(result.success).toBe(true);
+      if (result.success) {
+        expect(result.data.status).toBe('confirmed');
+        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, item_name: 'Milk' },
+        { inventory_id: 2, item_name: 'Bread' },
+      ];
+      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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+        bindings: vi.fn().mockReturnValue({}),
+      };
+      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 +1,691 @@
+// 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';
+
+// ============================================================================
+// 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(),
+    log: {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    },
+    ...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 recipe object.
+ */
+function createMockRecipe(overrides: Record<string, unknown> = {}) {
+  return {
+    recipe_id: 1,
+    user_id: 'user-123',
+    name: 'Test Recipe',
+    description: 'A delicious test recipe',
+    instructions: 'Mix ingredients and cook',
+    prep_time_minutes: 15,
+    cook_time_minutes: 30,
+    servings: 4,
+    photo_url: '/uploads/recipes/test.jpg',
+    status: 'public' as const,
+    forked_from: null,
+    ingredients: [
+      {
+        recipe_ingredient_id: 1,
+        master_item_name: 'Flour',
+        quantity: '2',
+        unit: 'cups',
+        created_at: '2024-01-01T00:00:00.000Z',
+        updated_at: '2024-01-01T00:00:00.000Z',
+      },
+    ],
+    tags: [
+      {
+        tag_id: 1,
+        name: 'vegetarian',
+        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',
+    ...overrides,
+  };
+}
+
+/**
+ * Creates a mock recipe comment object.
+ */
+function createMockComment(overrides: Record<string, unknown> = {}) {
+  return {
+    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: null,
+    created_at: '2024-01-01T00:00:00.000Z',
+    updated_at: '2024-01-01T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+// ============================================================================
+// TEST SUITE
+// ============================================================================
+
+describe('RecipeController', () => {
+  let controller: RecipeController;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    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();
+
+      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();
+
+      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();
+
+      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();
+
+      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();
+
+      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();
+
+      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();
+
+      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();
+
+      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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      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();
+      const request = createMockRequest();
+
+      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();
+      const request = createMockRequest();
+
+      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.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();
+
+      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();
+
+      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();
+
+      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();
+
+      mockedAiService.generateRecipeSuggestion.mockResolvedValue(null);
+
+      // Act
+      const result = await controller.suggestRecipe({ ingredients: ['chicken'] }, request);
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error.code).toBe('SERVICE_UNAVAILABLE');
+      }
+    });
+
+    it('should log suggestion generation', async () => {
+      // Arrange
+      const mockLog = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      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();
+
+      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();
+
+      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 = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      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
+      const mockForkedRecipe = createMockRecipe({
+        recipe_id: 10,
+        user_id: 'test-user-id',
+        forked_from: 1,
+        status: 'private',
+      });
+      const request = createMockRequest();
+
+      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);
+        expect(result.data.forked_from).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, forked_from: 1 });
+      const mockLog = {
+        debug: vi.fn(),
+        info: vi.fn(),
+        warn: vi.fn(),
+        error: vi.fn(),
+      };
+      const request = createMockRequest({ log: mockLog });
+
+      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();
+
+      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();
+
+      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();
+
+      mockedAiService.generateRecipeSuggestion.mockResolvedValue(null);
+
+      // Act
+      const result = await controller.suggestRecipe({ ingredients: ['test'] }, request);
+
+      // Assert
+      expect(result.success).toBe(false);
+      if (!result.success) {
+        expect(result.error).toHaveProperty('code');
+        expect(result.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);
+  }
+}