Features:
- Modern web UI with all generation modes (T2V, I2V, T2I, I2I, V2V, Dub, Subtitles, Upscale)
- Real-time progress updates via WebSocket
- File upload for input images/videos/audio
- File download for generated content
- Background job processing with progress tracking
- Job management (cancel, retry, delete)
- Gallery for browsing generated files
- REST API for programmatic access
- Responsive design for desktop and mobile

Backend (webapp.py):
- Flask + Flask-SocketIO for real-time updates
- Background job processing with threading
- File upload/download handling
- Job state persistence
- REST API endpoints

Frontend:
- Modern dark theme UI
- Mode selection with visual cards
- Form with all options and settings
- Real-time progress modal with log streaming
- Toast notifications
- Keyboard shortcuts (Ctrl+Enter to submit, Escape to close)

Documentation:
- Updated README.md with web interface section
- Updated EXAMPLES.md with web interface usage
- Updated requirements.txt with web dependencies