- Replace floating pill tab dock with a full-width system-aligned navigation bar.
- Give active tabs cobalt icon chips and clean cobalt labels while keeping inactive tabs muted.
- Add compact live attendance summary above the day picker on Today.
- Add Playwright verification for the new metrics and navigation surface.
- Replace modal calendar with inline expandable calendar widget integrated into the day picker.
- Add status indicator dots (attended/absent/pending) to month calendar grid matching day picker.
- Disable and gray out weekend days in calendar when weekend schedule is turned off.
- Redesign extend bar with integrated handle that aligns with the palette.
- Remove start-to-end timing on Today screen's class time rail, showing only start time.
- Implement Playwright E2E and visual testing suite with multi-screen capture scripts.
- Add cascade DELETE endpoints for subjects and versioned recurring timetable entries.
