- Add CalendarShapeUtil with view tabs (Browser/Widget/Year)
- Add CalendarTool for placing calendar on canvas
- Add CalendarEventShapeUtil for spawning event cards
- Add CalendarPanel component with month/week views
- Add YearViewPanel component with 12-month grid
- Add useCalendarEvents hook for fetching encrypted calendar data
- Single keyboard shortcut (Ctrl+Alt+K) with in-shape view switching
- Auto-resize when switching between views
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
