Release v2.24.0 (#487)

2.24.0: the widget redesign and the fixes collected on release/2.24.0. Full list in CHANGELOG.md under 2.24.0.

- Seven new widgets (quick add, date, week strip, upcoming, today, countdown, month with day), each with its own settings; new look for the agenda and month widgets.
- Drag all-day events between days or into the grid; cancelled and tentative events are marked; month view setting to hide start times.
- Fixes: short events late at night, one notification per event, weekend missing from the week strip widget, split month view animations and back gesture.
- Weblate translations from #434, including the new Traditional Chinese (zh-TW), with its store listing and What's New.

Merges main's v2.23.1 in. #427 is moved out of the milestone until it can be reproduced.

Closes #434

Co-authored-by: Jean-Luc Makiola <business@jeanlucmakiola.de>
Co-authored-by: Sup99999 <alelmnour1o234@proton.me>
Co-authored-by: Weblate <noreply-mt-weblate@weblate.org>
Co-authored-by: Benutzer <gabrielegobboch@protonmail.ch>
Co-authored-by: N Donkersloot <n@donkerslootjes.nl>
Co-authored-by: VinCap <vcapaldo@ik.me>
Co-authored-by: AventineC <AventineC@outlook.com>
Co-authored-by: Weblate <noreply@weblate.org>
Co-authored-by: NattyNarwhal <fr.schuessele@gmx.de>
Co-authored-by: James Trivette <trivette@atlas.cz>
Co-authored-by: Dmitri Gabinski <dkgabi@gmail.com>
Co-authored-by: Tritra002 <tritratrulala002@outlook.com>
Reviewed-on: https://codeberg.org/jlmakiola/calendula/pulls/487

docs/ARCHITECTURE.md

@@ -295,7 +295,7 @@ Right before writing, the event is re-read and snapshots compared: a
 mismatch parks the save in an overwrite/discard dialog; a vanished event
 informs and closes. Overwrite still writes only dirty fields, so external
 changes to untouched fields survive either way. Fields the form cannot
-write (attendees, status, reminder methods) are excluded so sync noise
+write (your own response, reminder methods) are excluded so sync noise
 can't fake a conflict.
 
 A **dropped** event gets no conflict dialog, deliberately. Its blast radius is
@@ -333,7 +333,7 @@ sequenceDiagram
     Src-->>Sc: Instances ⋈ Reminders
     Sc->>P: planReminders / scheduleReminders(watermark, now)
     P-->>Sc: due + next alarm
-    Sc->>N: post(alert) — tag = reminder key
+    Sc->>N: post(alert) — tag = occurrence, so a later reminder replaces it
     Sc->>A: scheduleScan(next)
 ```