## Summary
Complete frontend overhaul implementing best practices, security hardening,
full CRUD operations, and performance optimizations across the application.
## Key Changes
### Architecture & Performance
- Implement code splitting with React.lazy() reducing main bundle from 795KB to 308KB (61% improvement)
- Add error boundary component for graceful error handling
- Create shared utility modules for formatters, validation, and calculations
### Security Enhancements
- Add input sanitization to prevent XSS attacks
- Implement comprehensive validation (email, phone, positive numbers, required fields)
- Sanitize all user inputs before storage
- Add confirmation dialogs for destructive operations
### Features & Functionality
- Implement complete edit/delete operations for assets, liabilities, clients, and invoices
- Add invoice status update functionality (draft/sent/paid/overdue/cancelled)
- Connect "Record Snapshot" button with proper functionality
- Fix hardcoded statistics with dynamic calculations (monthly change, YTD growth)
- Make all list items clickable with hover effects and visual feedback
### Code Quality
- Replace inline currency formatting with shared formatters
- Add comprehensive input validation across all forms
- Display inline error messages for validation failures
- Implement loading states for lazy-loaded routes
- Ensure type safety throughout with zero TypeScript errors
### UI/UX Improvements
- Add hover states to all clickable items
- Display validation errors inline with user-friendly messages
- Add loading indicators during page transitions
- Color-code financial metrics (green for positive, red for negative)
- Improve form user experience with real-time validation
## Technical Details
- Created src/lib/formatters.ts for currency and percentage formatting
- Created src/lib/validation.ts for input validation and sanitization
- Created src/lib/calculations.ts for financial calculations
- Added EditAssetDialog, EditLiabilityDialog, EditClientDialog, InvoiceDetailsDialog
- Wrapped app in ErrorBoundary for robust error handling
Alexander Zinn
a62782a58f