- Store calendar colors (backgroundColor) from Apple and Synology
during connection setup
- Auto-refresh missing colors for existing Apple/Synology connections
- Show color dots next to calendar names in settings
- Add "Custom..." recurrence option with interval (every N days/weeks/
months/years) and day-of-week selection for weekly recurrence
- Generate proper RRULE with INTERVAL and BYDAY for all providers
- Generate proper Outlook Graph recurrence with custom intervals
v1.61.0
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
