- send a calendar's colour only when the user changed it: Stalwart 1.0
accepts only #rgb, #rrggbb or a CSS name, so renaming a calendar that
another client coloured with an 8-digit hex (Apple Calendar) failed
- "Refresh cached data" kept nothing of the calendar store's persisted
state, so it deleted the user's iCal subscriptions, which exist only
there; keep them and drop the rest
- show a notice with a retry when the task list fails to load; it keeps
the tasks it had
- treat a method-level error on creating a task as a failure with its
JMAP type instead of "no id returned"
When the mailbox view gets into a stale or wrong state, the only escape
was the browser's "clear site data" — which also wipes the saved account
list, forcing a re-login of every account.
Add a non-destructive "Refresh cached data" button under Settings →
Data. It clears the server-derived caches (contacts, calendars,
identities, per-account snapshots) and reloads so they re-fetch fresh,
while preserving accounts, sessions, settings, themes and user content
(templates, S/MIME). Two-click confirm to avoid an accidental reload.
English strings added across all locales (translation follow-up); unit
tests cover the cache-clear (keeps account-registry/auth/prefs) and the
reload.