- The page asks the service worker for its version before using it, and
has the browser fetch a newer one when it is out of date; the app also
checks for a new sw.js on every start. An older worker left over from a
previous release silently ignored the page's requests, so saving only
resumed after offline access was switched off and on.
- Fewer console errors offline: the server probe goes through the worker;
fonts, the illustration, lazy chunks and the PDF worker (named inside
the app's scripts and styles) are saved with the app; sender pictures
are pre-loaded, and an unsaved one is "no picture" (204), not a 503;
plugin bundles and plugin lookups are saved (per-message ones go with
their message); POST lookups and live-update reconnects wait for the
server to be back instead of failing over and over.
- The setting moves from Settings → Security to Settings → Accounts.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>