- Fix CORS: set allow_credentials=False (token auth, not cookies)
- Add threading.Lock for position cache thread safety
- Add shutdown_executor() for clean ThreadPoolExecutor cleanup
- Dedicated ThreadPoolExecutors for script/callback execution
- Fix Mutagen file handle leaks with try/finally close
- Reduce idle WebSocket polling (0.5s → 2.0s when no clients)
- Add :focus-visible styles for playback control buttons
- Add aria-label to icon-only header buttons
- Dynamic album art alt text for screen readers
- Persist MDI icon cache to localStorage
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Backend improvements:
- Add execution_time tracking for script execution
- Add execution_time tracking for callback execution
- Add /api/callbacks/execute/{callback_name} endpoint for debugging callbacks
Frontend improvements:
- Fix duration display showing N/A for fast scripts (0 is falsy in JS)
- Increase duration precision to 3 decimal places (0.001s)
- Always show output section with "(no output)" message when empty
- Improve output formatting with italic gray text for empty output
Documentation:
- Add localization section to README
- Document available languages (English, Russian)
- Add guide for contributing new translations
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
alexei.dolgolyov