The refactoring in a4d8d81 moved calendar logic into useCalendar.ts but
used the old CSS-transform animation code instead of the GSAP-based
flying rect + flying label implementation. This restores:
- GSAP-based animateCalendarZoomIntoSource and animateCalendarFlipTransition
- Flying label that animates from card title → toolbar on zoom-in and back
- Clone-and-swap pattern with skeleton content in fly-rect (no text)
- Fly-rect/fly-label refs and setters now live in the composable
- isoWeekNumber() and weekNumber field on monthRows
- Sibling card titles and week numbers faded during zoom
- Removed old CSS-transform camera state and calendarSceneTransformStyle
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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