- Add comprehensive alarm scheduling and notification system
- Support for VAlarm data structures from calendar events
- Browser notification API integration with permission handling
- localStorage persistence for alarms across sessions
- Background service worker for alarm checking when app inactive
- Real-time alarm detection with 30-second intervals
- Debug logging for troubleshooting notification issues
- Automatic permission requests when events with alarms are created
- Support for Display action alarms with Duration and DateTime triggers
- Clean alarm management (create, update, remove, expire)
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Co-Authored-By: Claude <noreply@anthropic.com>
