fix: resolve TypeScript and deployment issues

- Add explicit Router type annotations to fix TS2742 errors
- Add @google-cloud/functions-framework dependency for Firebase deployment
- Fix build script to use cross-platform file copy (Windows compatible)
- Exclude pnpm-lock.yaml from Firebase deployment
- Update package-lock.json to sync with package.json

backend/firebase.json

@@ -20,7 +20,8 @@
       ".env.bak",
       ".env.bak*",
       "*.env.bak",
-      "*.env.bak*"
+      "*.env.bak*",
+      "pnpm-lock.yaml"
     ],
     "predeploy": [
       "npm run build"

backend/package.json

@@ -5,7 +5,7 @@
   "main": "dist/index.js",
   "scripts": {
     "dev": "ts-node-dev --respawn --transpile-only --max-old-space-size=8192 --expose-gc src/index.ts",
-    "build": "tsc && node src/scripts/prepare-dist.js && cp .puppeteerrc.cjs dist/",
+    "build": "tsc && node src/scripts/prepare-dist.js && node -e \"require('fs').copyFileSync('.puppeteerrc.cjs', 'dist/.puppeteerrc.cjs')\"",
     "start": "node --max-old-space-size=8192 --expose-gc dist/index.js",
     "test:gcs": "ts-node src/scripts/test-gcs-integration.ts",
     "test:staging": "ts-node src/scripts/test-staging-environment.ts",
@@ -66,7 +66,8 @@
     "uuid": "^11.1.0",
     "winston": "^3.11.0",
     "zod": "^3.25.76",
-    "zod-to-json-schema": "^3.24.6"
+    "zod-to-json-schema": "^3.24.6",
+    "@google-cloud/functions-framework": "^3.4.0"
   },
   "devDependencies": {
     "@types/bcryptjs": "^2.4.6",
@@ -82,6 +83,7 @@
     "@typescript-eslint/parser": "^6.10.0",
     "@vitest/coverage-v8": "^2.1.0",
     "eslint": "^8.53.0",
+    "ts-node": "^10.9.2",
     "ts-node-dev": "^2.0.0",
     "typescript": "^5.2.2",
     "vitest": "^2.1.0"

backend/src/routes/documentAudit.ts

@@ -3,7 +3,7 @@ import { getSupabaseServiceClient } from '../config/supabase';
 import { logger } from '../utils/logger';
 import { addCorrelationId } from '../middleware/validation';
 
-const router = Router();
+const router: Router = Router();
 router.use(addCorrelationId);
 
 /**

backend/src/routes/documents.ts

@@ -16,7 +16,7 @@ declare global {
   }
 }
 
-const router = express.Router();
+const router: express.Router = express.Router();
 
 // Apply authentication and correlation ID to all routes
 router.use(verifyFirebaseToken);

backend/src/routes/monitoring.ts

@@ -3,7 +3,7 @@ import { uploadMonitoringService } from '../services/uploadMonitoringService';
 import { addCorrelationId } from '../middleware/validation';
 import { logger } from '../utils/logger';
 
-const router = Router();
+const router: Router = Router();
 
 // Apply correlation ID middleware to all monitoring routes
 router.use(addCorrelationId);

backend/src/routes/vector.ts

@@ -2,7 +2,7 @@ import { Router } from 'express';
 import { VectorDatabaseModel } from '../models/VectorDatabaseModel';
 import { logger } from '../utils/logger';
 
-const router = Router();
+const router: Router = Router();
 
 /**
  * GET /api/vector/document-chunks/:documentId