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Backend Enhancements
Strict Authentication Rate Limiting: Implemented a dedicated authLimiter in the server entry point to protect sensitive endpoints. This limits each IP address to 10 login or registration attempts every 15 minutes, effectively mitigating brute-force and credential-stuffing attacks.
Centralized Global Error Handling: Added a global error-handling middleware at the end of the application stack. This ensures that any unhandled exceptions are caught and returned to the client as a consistent JSON response containing a status code and message, preventing the leakage of sensitive stack traces in production environments.
Request Optimization: Configured the middleware stack to prioritize security and performance by placing the new rate limiters alongside existing general and payment limiters.
Frontend Enhancements
Global Error Boundary: Introduced a high-level ErrorBoundary component in the React application. This component acts as a safety net that catches JavaScript errors anywhere in the child component tree, preventing the entire application from crashing and showing a blank white screen.
Graceful Fallback UI: Designed a professional fallback interface that displays a clear error message and a "Refresh Page" button when a crash is caught, maintaining a better user experience during unexpected failures.
Robust Component Architecture: Wrapped the primary Router within the new ErrorBoundary in App.tsx, ensuring that routing failures or individual page crashes are handled gracefully across the entire platform.