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>

bun.lock

@@ -35,12 +35,11 @@
       "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:",
       },
@@ -180,6 +179,24 @@
         "typescript": "catalog:",
       },
     },
+    "packages/testing/test-helpers": {
+      "name": "@reviq/test-helpers",
+      "version": "0.0.1",
+      "dependencies": {
+        "@reviq/db": "workspace:*",
+        "@reviq/db-schema": "workspace:*",
+        "kysely": "^0.28.2",
+        "pg": "^8.16.3",
+      },
+      "devDependencies": {
+        "@macalinao/eslint-config": "catalog:",
+        "@macalinao/tsconfig": "catalog:",
+        "@types/bun": "catalog:",
+        "@types/pg": "^8.16.0",
+        "eslint": "catalog:",
+        "typescript": "catalog:",
+      },
+    },
     "packages/testing/virtual-authenticator": {
       "name": "@reviq/virtual-authenticator",
       "version": "0.0.1",
@@ -189,7 +206,7 @@
       "devDependencies": {
         "@macalinao/eslint-config": "catalog:",
         "@macalinao/tsconfig": "catalog:",
-        "@types/bun": "latest",
+        "@types/bun": "catalog:",
         "@types/node": "^25.0.3",
         "eslint": "catalog:",
         "typescript": "catalog:",
@@ -425,6 +442,8 @@
 
     "@reviq/db-schema": ["@reviq/db-schema@workspace:packages/db-schema"],
 
+    "@reviq/test-helpers": ["@reviq/test-helpers@workspace:packages/testing/test-helpers"],
+
     "@reviq/utils": ["@reviq/utils@workspace:packages/utils"],
 
     "@reviq/virtual-authenticator": ["@reviq/virtual-authenticator@workspace:packages/testing/virtual-authenticator"],