Second slice of milestone 2 (write support):
- EventForm domain model + problems() validation (end-before-start,
no-calendar; blank titles and instant events stay legal)
- Full-screen EventEditScreen: title, all-day switch, M3 date/time pickers
(moving the start preserves the duration), calendar picker limited to
writable calendars, location, description. Save validates, requests the
WRITE upgrade contextually, and closes on success
- Calendar preselection: explicit pick > last-used (CalendarPrefs) > first
writable calendar
- insertEvent in the data source; EventWriteMapper (JVM-tested) normalises
all-day events to UTC midnights with exclusive DTEND, timed events to the
device zone
- CalendarFabColumn shared by month/week/day: persistent "+" FAB anchored on
the visible day, jump-to-today pill stacked above it
- Tests: EventForm validation, write-time mapping (incl. DST-safe epoch
check), repository createEvent delegation/error propagation
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
First slice of milestone 2 (write support), per the new plan in
docs/superpowers/plans/2026-06-11-03-write-support.md:
- Delete from the event detail screen with confirmation; recurring events
choose "only this event" (cancelled exception via CONTENT_EXCEPTION_URI,
series survives) or "all events in the series" (Events-row delete)
- WRITE_CALENDAR in the manifest; onboarding requests read+write in one
system dialog but only read gates the app — declining write keeps it
usable read-only. v1.0 installs get a contextual write request on their
first delete
- CALENDAR_ACCESS_LEVEL is read into CalendarSource.canModifyContents;
read-only calendars (WebCal, birthdays, …) show no write actions. The
no-op placeholder Edit button is removed until edit ships (v1.3)
- Onboarding copy drops the now-false "read-only" claim (DE+EN)
- Tests: repository delete delegation/error propagation, access-level
mapping; FakeCalendarDataSource grows write ops
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
