- Fix service instance management to use global instance for stopping autosync
- Add automatic saving when toggle is changed (no manual save required)
- Fix validation issue where custom sync type without cron expression caused 400 error
- Add comprehensive debugging and error handling
- Ensure .env file is properly updated with AUTO_SYNC_ENABLED value
- Improve service lifecycle management with proper state cleanup
- Add fallback logic for invalid sync interval configurations
Resolves issue where disabling autosync in GUI didn't update .env file or stop service
