Add authentication, user management, and database migration features

- Implement OAuth 2.0 and PAT authentication methods
- Add user management, roles, and profile functionality
- Add database migrations and admin user scripts
- Update services for authentication and user settings
- Add protected routes and permission hooks
- Update documentation for authentication and database access

backend/package.json

@@ -9,10 +9,15 @@
     "build": "tsc",
     "start": "node dist/index.js",
     "generate-schema": "tsx scripts/generate-schema.ts",
+    "migrate": "tsx scripts/run-migrations.ts",
+    "check-admin": "tsx scripts/check-admin-user.ts",
     "migrate:sqlite-to-postgres": "tsx scripts/migrate-sqlite-to-postgres.ts"
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.32.1",
+    "@types/bcrypt": "^6.0.0",
+    "@types/nodemailer": "^7.0.5",
+    "bcrypt": "^6.0.0",
     "better-sqlite3": "^11.6.0",
     "cookie-parser": "^1.4.7",
     "cors": "^2.8.5",
@@ -20,6 +25,7 @@
     "express": "^4.21.1",
     "express-rate-limit": "^7.4.1",
     "helmet": "^8.0.0",
+    "nodemailer": "^7.0.12",
     "openai": "^6.15.0",
     "pg": "^8.13.1",
     "winston": "^3.17.0",