- Created MonitoringDashboard component to visualize system metrics
- Added monitoring tab to AdminDashboardPage (/admin route)
- Displays validation metrics (total, successful, failed, failure rate)
- Shows top 5 endpoints with most validation failures
- Displays Sentry error tracking status and configuration
- Shows performance monitoring information
- Auto-refreshes metrics every 30 seconds
- Manual refresh button available
- Links to Sentry dashboard when configured
- Complete monitoring solution for system health visibility
