Major refactoring to improve code organization and maintainability:
- Refactor API routes (api_v1.py) to delegate business logic to service layer
- Add new QuoteService for quote management operations
- Enhance existing services: ExpenseService, InvoiceService, PaymentService, ProjectService, TimeTrackingService
- Improve caching utilities with enhanced cache management
- Enhance API authentication utilities
- Add comprehensive test suite covering routes, services, and utilities
- Update routes to use service layer pattern (kiosk, main, projects, quotes, timer, time_entry_templates)
- Update time entry template model with additional functionality
- Update Docker configuration and startup scripts
- Update dependencies and setup configuration
This refactoring improves separation of concerns, testability, and code maintainability while preserving existing functionality.