ci: Bump version to 0.12.12 [skip ci]

CLAUDE.md

@@ -222,6 +222,7 @@ Common issues with solutions:
 4. **Filename collisions** - Multer predictable names → Use `${Date.now()}-${Math.round(Math.random() * 1e9)}`
 5. **Response format mismatches** - API format changes → Log response bodies, update assertions
 6. **External service failures** - PM2/Redis unavailable → try/catch with graceful degradation
+7. **TZ environment variable breaks async hooks** - `TZ=America/Los_Angeles` causes `RangeError: Invalid triggerAsyncId value: NaN` → Tests now explicitly set `TZ=` (empty) in package.json scripts
 
 **Full Details**: See test issues section at end of this document or [docs/development/TESTING.md](docs/development/TESTING.md)
 
@@ -377,3 +378,28 @@ API formats change: `data.jobId` vs `data.job.id`, nested vs flat, string vs num
 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.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "flyer-crawler",
-  "version": "0.12.11",
+  "version": "0.12.12",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "flyer-crawler",
-      "version": "0.12.11",
+      "version": "0.12.12",
       "dependencies": {
         "@bull-board/api": "^6.14.2",
         "@bull-board/express": "^6.14.2",

package.json

@@ -1,7 +1,7 @@
 {
   "name": "flyer-crawler",
   "private": true,
-  "version": "0.12.11",
+  "version": "0.12.12",
   "type": "module",
   "scripts": {
     "dev": "concurrently \"npm:start:dev\" \"vite\"",
@@ -14,12 +14,12 @@
     "start": "npm run start:prod",
     "build": "vite build",
     "preview": "vite preview",
-    "test": "node scripts/check-linux.js && cross-env NODE_ENV=test tsx ./node_modules/vitest/vitest.mjs run",
-    "test-wsl": "cross-env NODE_ENV=test vitest run",
+    "test": "node scripts/check-linux.js && cross-env NODE_ENV=test TZ= tsx ./node_modules/vitest/vitest.mjs run",
+    "test-wsl": "cross-env NODE_ENV=test TZ= vitest run",
     "test:coverage": "npm run clean && npm run test:unit -- --coverage && npm run test:integration -- --coverage",
-    "test:unit": "node scripts/check-linux.js && cross-env NODE_ENV=test tsx --max-old-space-size=8192 ./node_modules/vitest/vitest.mjs run --project unit -c vite.config.ts",
-    "test:integration": "node scripts/check-linux.js && cross-env NODE_ENV=test tsx --max-old-space-size=8192 ./node_modules/vitest/vitest.mjs run --project integration -c vitest.config.integration.ts",
-    "test:e2e": "node scripts/check-linux.js && cross-env NODE_ENV=test tsx --max-old-space-size=8192 ./node_modules/vitest/vitest.mjs run --config vitest.config.e2e.ts",
+    "test:unit": "node scripts/check-linux.js && cross-env NODE_ENV=test TZ= tsx --max-old-space-size=8192 ./node_modules/vitest/vitest.mjs run --project unit -c vite.config.ts",
+    "test:integration": "node scripts/check-linux.js && cross-env NODE_ENV=test TZ= tsx --max-old-space-size=8192 ./node_modules/vitest/vitest.mjs run --project integration -c vitest.config.integration.ts",
+    "test:e2e": "node scripts/check-linux.js && cross-env NODE_ENV=test TZ= tsx --max-old-space-size=8192 ./node_modules/vitest/vitest.mjs run --config vitest.config.e2e.ts",
     "format": "prettier --write .",
     "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
     "type-check": "tsc --noEmit",