Major UX Improvements:
- Replace all alert() dialogs with elegant toast notifications
- Add comprehensive loading states for all async operations
- Implement client-side form validation with visual feedback
- Add React Error Boundary for graceful error recovery
Components Added:
- Toast notification system with success/error/warning/info types
- useToast hook for easy notification management
- ErrorBoundary component with development error details
- Form validation with real-time feedback
User Experience:
- Professional toast notifications instead of browser alerts
- Loading indicators prevent double-clicks and show progress
- Immediate validation feedback prevents submission errors
- Graceful error recovery with retry options
- Enhanced accessibility with proper ARIA labels
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
