Add test infrastructure with coverage and DB test skipping

- Create @reviq/test-helpers package with shared test utilities
- Add describeE2E helper that auto-prefixes test names with [e2e]
- Support SKIP_DB_TESTS=1 to skip database-dependent tests
- Add unix socket support for TEST_DATABASE_URL
- Add root commands: test:unit, test:all, test:cov, test:unit:cov
- Configure bunfig.toml to exclude dist/ from coverage reports
- Clean up tsconfig.json files to remove redundant settings

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api-server/package.json

@@ -9,9 +9,7 @@
     "typecheck": "tsc --noEmit",
     "lint": "eslint . --cache",
     "clean": "rm -rf dist .eslintcache",
-    "test:e2e": "bun test src/__tests__/e2e --no-parallel --coverage",
-    "test:unit": "bun test src/__tests__/unit",
-    "test": "bun test --coverage src/utils"
+    "test": "bun test src/ --no-parallel"
   },
   "dependencies": {
     "@formatjs/intl-durationformat": "^0.9.2",
@@ -34,12 +32,11 @@
   "devDependencies": {
     "@macalinao/eslint-config": "catalog:",
     "@macalinao/tsconfig": "catalog:",
+    "@reviq/test-helpers": "workspace:*",
     "@reviq/virtual-authenticator": "workspace:*",
     "@types/bun": "catalog:",
-    "@types/pg": "^8.16.0",
     "@types/zxcvbn": "^4.4.5",
     "eslint": "catalog:",
-    "pg": "^8.16.3",
     "pino-pretty": "^13.1.3",
     "typescript": "catalog:"
   }