- Implement date range filtering for creation and due dates
- Add customer name and email search with case-insensitive partial matching
- Support amount range filtering with min and max values
- Enhance sorting with multiple field options
- Update README with comprehensive documentation for all filter options
- Add Jinja2 templates and static files for web UI
- Create frontend routes for invoice management
- Implement home page with recent invoices list
- Add invoice creation form with dynamic items
- Create invoice search functionality
- Implement invoice details view with status update
- Add JavaScript for form validation and dynamic UI
- Update main.py to serve static files
- Update documentation
- Create FastAPI app structure
- Set up SQLAlchemy with SQLite for database management
- Implement invoice and invoice item models
- Add Alembic for database migrations
- Create invoice generation and retrieval API endpoints
- Add health check endpoint
- Set up Ruff for linting
- Update README with project details
