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Fix SW scope to intercept page navigations for offline support

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The SW was served from /static/sw.js with default scope /static/,
so it only intercepted static asset requests. Page navigations to
/capture, /queue, /browser were not handled by the SW at all —
Safari showed its native offline error.

Fix: serve SW from /sw.js route with Service-Worker-Allowed: / header
and register with scope: /. Now the SW intercepts all navigations and
serves the offline fallback page when the network is unavailable.

Also remove auth-protected page routes from precache (they would cache
the login redirect). Pages are cached via network-first on visit instead.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
kamaji
2026-02-07 22:16:07 -06:00
parent ac241fae2e
commit 37f417eb5b
3 changed files with 17 additions and 9 deletions
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10
app/static/sw.js
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@@ -1,9 +1,9 @@
// NextSnap Service Worker
// Provides offline-first caching for the app shell
const CACHE_VERSION = 'nextsnap-v21';
const APP_SHELL_CACHE = 'nextsnap-shell-v17';
const RUNTIME_CACHE = 'nextsnap-runtime-v17';
const CACHE_VERSION = 'nextsnap-v22';
const APP_SHELL_CACHE = 'nextsnap-shell-v18';
const RUNTIME_CACHE = 'nextsnap-runtime-v18';
// Offline fallback page (served when network fails and no cached version exists)
const OFFLINE_PAGE = `<!DOCTYPE html>
@@ -26,10 +26,6 @@ button:active{opacity:0.8}
// Assets to cache on install
const APP_SHELL_ASSETS = [
'/',
'/capture',
'/queue',
'/browser',
'/static/css/style.css',
'/static/js/app.js',
'/static/js/auth.js',