- Fix Gmail email configuration (field mapping between frontend/backend)
- Implement proper AES-256-GCM encryption for sensitive config files
- Add responsive column hiding for Storage tab on mobile devices
- Fix email configuration persistence and auto-populate recipients
- Add comprehensive testing tools for UI and API validation
- Fix alert acknowledge/clear functionality returning 404 errors
- Improve mobile UX: Storage shows only essential columns on small screens
- Revert dashboard to consistent table view (removed card layout experiment)
- Fix various UI issues: threshold detection, email template spacing
- Update notification system to use actual node data in test emails
