Shuki VakninandLinus Rath
f51ec50443
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.