Refactor useAuth hooks for improved type safety, error handling, and compliance with auto-generated API client

- Migrated `useAuth` hooks to use functions from auto-generated API client for improved maintainability and OpenAPI compliance.
- Replaced manual API calls with SDK functions (`login`, `register`, `logout`, etc.) and added error type guards for runtime safety (`isTokenWithUser`, `isSuccessResponse`).
- Enhanced hooks with better error logging, optional success callbacks, and stricter type annotations.
- Refactored `Logout` and `LogoutAll` mutations to handle missing tokens gracefully and clear local state on server failure.
- Added tests for API type guards and updated functionality of hooks to validate proper behaviors.
- Removed legacy `client-config.ts` to align with new API client utilization.
- Improved inline documentation for hooks with detailed descriptions and usage guidance.

frontend/package.json

@@ -63,11 +63,13 @@
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
+    "axios-mock-adapter": "^2.1.0",
     "eslint": "^9",
     "eslint-config-next": "15.2.0",
     "jest": "^30.2.0",
     "jest-environment-jsdom": "^30.2.0",
     "tailwindcss": "^4",
-    "typescript": "^5"
+    "typescript": "^5",
+    "whatwg-fetch": "^3.6.20"
   }
 }