- Add BEGIN IMMEDIATE transaction to add_chunk() function
- Prevents concurrent chunk uploads from overwriting each other
- Fixes issue where parallel uploads would lose chunks in database
- Critical for supporting 2+ parallel chunk uploads on mobile
- Add secret_key column to server_config table
- Generate and store secret_key on first initialization
- Load secret_key from database at app startup for consistent sessions across workers
- Fix QR code generation: remove unsupported format parameter for PyPNG
- Fix race condition in database directory creation with exist_ok=True
- Add migration for existing databases to populate secret_key
Add custom confirmation modal for file deletion with smooth animations and backdrop blur. Improves UI consistency and provides better user experience than default browser dialogs.
Validate download code before starting download to ensure code input is only cleared on successful downloads. Invalid or expired codes now show an error message while preserving the entered code for correction.
- Store client key in SQLite database instead of environment variable
- Add database migration from CLIENT_KEY environment variable to preserve existing keys
- Add admin UI with tabbed interface (Configuration and QR Code tabs)
- Implement QR code generation containing server config (address, port, key) for Android app
- Add functionality to regenerate client key with warning dialog
- Add buttons to download QR code as PNG and copy QR image to clipboard
- Add manual input fields for server address and port configuration
- Update requirements.txt with pyotp and qrcode dependencies
- Replace JSON file storage with SQLite database for improved concurrency and data integrity
- Implement repository pattern with dedicated model layer (admin_model, file_model, chunk_model)
- Add database.py with automatic migration from existing JSON files
- Enable WAL mode for thread-safe concurrent access across Gunicorn workers
- Store database files in dedicated db/ folder
- Update controllers to use model layer instead of direct JSON access
- Add admin authentication system with TOTP 2FA support
