* feat: add PWA support (manifest, service worker, install prompt) (v0.50.178, #911)
Co-authored-by: bsgdigital
Closes#685
* fix(sw): await caches.match() before `|| fallback` so offline HTML actually shows
The offline-navigation fallback was dead code:
return caches.match('./') || new Response('<html>...</html>', ...);
`caches.match()` returns a Promise, and Promise objects are always truthy
in a `||` check — so the `new Response(...)` branch was never taken. On
actual offline, `caches.match('./')` resolves to undefined (no cache hit
for the root), the SW returns undefined, and the browser falls back to
its own default offline page. The custom "Hermes requires a server
connection" HTML was unreachable.
Fix by threading the match through `.then()` so the resolved value (not
the Promise object) feeds the `||`:
return caches.match('./').then((cached) => cached || new Response(...));
Added 13 regression tests in tests/test_pwa_manifest_sw.py covering:
- manifest.json validity + required PWA fields + icon existence
- sw.js cache-version placeholder + API/stream bypass + correct offline
pattern (explicitly rejects the broken `|| new Response` shape so it
can't regress)
- /manifest.json + /sw.js routes serve correct Content-Type,
Cache-Control, Service-Worker-Allowed headers and inject WEBUI_VERSION
- index.html links manifest, registers SW, has iOS PWA meta tags
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: nesquena-hermes <nesquena-hermes@users.noreply.github.com>
Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
