- List of the user's own calendars (web/calendar)
- Month view per calendar with a Monday-first 6-week grid, showing
all-day and timed events, colored dot matching the calendar's color
- Navigation between months (prev/next/today) via query params
- Create/edit/delete events: title, description, location, all-day
toggle, start/end date+time
- Clicking a day cell prefills a new all-day event on that date; the
"New event" button defaults to a one-hour slot starting next full hour
- Deleting an event or invalid time ranges (end before/equal start) are
validated with inline error messages
- Verified round-trip with the real CalDAV protocol handler (events
created via the web UI are correctly visible to a REPORT query)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
