Correctness:
- Recurring writes: move the series DTSTART by the *wall-clock* shift applied
to the edited occurrence and re-resolve it in the event's zone, instead of by
a millisecond delta. The old delta baked in whichever UTC offset applied on
the edited occurrence's date, so pinning a recurring event to another zone —
or editing an occurrence on the far side of a DST boundary from the series
anchor — shifted the whole series by an hour. Also snaps the anchor to a UTC
midnight when the event becomes all-day.
- Detail card and edit form now resolve a pinned zone's abbreviation/offset at
the *event's* instant, not at "now", so a July event no longer reads
"CET · 10:00 AM" when opened in January.
- Agenda: the zone used to label multi-day rows now travels on
AgendaUiState.Success rather than a process-lifetime file-level constant, so
labelling can't disagree with the grouping after a device time-zone change.
- Week title: spell out the year when the week straddles New Year, via a new
forceYear flag on formatCalendarTitle.
Performance:
- Build the ~600-entry zone catalogue off the main thread (produceState +
Dispatchers.Default); resolve the device row's summary on its own so it still
renders complete on the first frame.
- Pre-normalize each TimeZoneOption's search keys at construction, turning
~2400 NFD normalizations per keystroke into plain prefix/substring checks.
Hoist the combining-mark Regex out of the hot path.
- Key the edit form's local-time line on the fields it reads instead of
recomputing it on every keystroke.
- Move LauncherNameManager's PackageManager binder calls off the main thread.
Cleanup:
- Drop a duplicate Public icon import and the unused
event_edit_timezone_clear string.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jean-Luc Makiola
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