- Group imported ICS occurrences per weekly slot, hatch irregular/half-semester
sessions, and link them to existing courses by stable code (not name, since
university exports mix languages) with a one-time manual-match fallback
- Preserve exact per-date occurrences from imported ICS so exported calendars
correctly skip holiday/vacation gaps instead of assuming a flat weekly rule
- Add "Export ICS" for a semester's course + manual schedule, prompting once
for semester start/end dates (now also editable directly on the semester)
- Fix pinned QRCode CDN version (package dropped its browser bundle) and add
a send/receive choice after scanning instead of always auto two-way syncing
- Fix course save silently adding a phantom Monday slot from picker defaults;
replace with an explicit "No fixed schedule / Has a weekly schedule" toggle
- Service worker: network-first app shell so edits show up without manual
cache-busting, self-update + reload on new worker, version indicator
- Dashboard: fold older semesters by default and jump to the current one,
optional auto-fold for validated blocks/sub-blocks, JSON backup nudge
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>