fix: resolve CI test failures and Docker build issues

- Fix template service tests to include description field
- Add missing repository methods for metadata queries
- Fix metadata generator test mocking issues
- Add missing runtime dependencies (openai, zod) to package.runtime.json
- Update test expectations for new template format

Fixes CI failures in PR #194

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

package.runtime.json

@@ -9,7 +9,9 @@
     "dotenv": "^16.5.0",
     "sql.js": "^1.13.0",
     "uuid": "^10.0.0",
-    "axios": "^1.7.7"
+    "axios": "^1.7.7",
+    "openai": "^4.77.0",
+    "zod": "^3.24.1"
   },
   "engines": {
     "node": ">=16.0.0"