- Add wheel scroll navigation in month view (debounced, prevents rapid scrolling)
- Allow editing color on system calendars (Birthdays) - name field disabled
- Event templates: full CRUD backend (model, schema, router, migration 011)
- Event templates: sidebar section with create/edit/delete, click to pre-fill EventForm
- Register event_templates router at /api/event-templates
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
