- Replace full list of radio rows with a compact selected course preview card.
- Add an expandable course selection drawer with search and course-type filter chips (All, Lecture, Lab).
- Add fast duration presets (45m, 50m, 60m, 90m, 120m) for rapid scheduling.
- Prevent scroll overflow and layout breakage when a student has 10+ enrolled courses.
- 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.
