WeekPager had no height constraint (unlike CalendarPager which uses
pagerModifier with gridHeightPx), causing the pager to freely expand
instead of staying at the computed single-row height. Also, WeekPager
used 2dp row padding while CalendarMonthPage uses ROW_PADDING_DP (4dp),
creating a height mismatch at the switch point.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Move shared constants and helper functions into CalendarUtils.kt,
replace manual state synchronization with derivedStateOf in
CalendarViewModel and UI composables.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Adding .drop(1) prevents the settledPage flow from firing on initial
composition, which would override the "today" date selection.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Add KDoc to all public Composable functions with parameter descriptions
- Add inline comments for non-obvious algorithms (42-cell grid, pager mapping)
- Add @Suppress reason comments for monthNumber deprecation
- Document collapseProgress range and physical meaning
- Add named constant comments for START_PAGE
- Add Preview name to App()
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add isCollapsed/collapseProgress state to CalendarViewModel for toggling
between month and week views. CalendarMonthPage animates non-selected
weeks out with offset and alpha. Introduce WeekPager for single-week
HorizontalPager and BottomCard with drag-to-collapse gesture.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
