feat(desktop): "Start minimized" setting under Launch on login (cinny-desktop #3)

Shown only while Launch on login is on, and only when the native side
answers `get_start_minimized` (older desktop builds just don't show it).
Toggling calls `set_start_minimized`.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA

src/app/features/settings/general/General.tsx

@@ -161,11 +161,19 @@ function DesktopChromeSetting() {
  */
 function AutostartSetting() {
   const [enabled, setEnabled] = useState(false);
+  // [cinny-desktop #3] null until the native side answers (older builds don't
+  // have the command, so the switch just stays hidden there).
+  const [startMinimized, setStartMinimized] = useState<boolean | null>(null);
 
   useEffect(() => {
     tauriInvoke()?.('plugin:autostart|is_enabled')
       .then((value) => setEnabled(value === true))
       .catch(() => undefined);
+    tauriInvoke()?.('get_start_minimized')
+      .then((value) => {
+        if (typeof value === 'boolean') setStartMinimized(value);
+      })
+      .catch(() => undefined);
   }, []);
 
   const handleChange = (value: boolean) => {
@@ -173,6 +181,11 @@ function AutostartSetting() {
     setEnabled(value);
   };
 
+  const handleStartMinimized = (value: boolean) => {
+    invokeTauri('set_start_minimized', { value });
+    setStartMinimized(value);
+  };
+
   if (!isTauriEnv()) return null;
   return (
     <SequenceCard className={SequenceCardStyle} variant="SurfaceVariant" direction="Column">
@@ -181,6 +194,15 @@ function AutostartSetting() {
         description="Start Lotus Chat automatically when you sign in to your computer."
         after={<Switch variant="Primary" value={enabled} onChange={handleChange} />}
       />
+      {enabled && startMinimized !== null && (
+        <SettingTile
+          title="Start minimized"
+          description="When it starts at login, keep Lotus Chat in the system tray instead of opening the window. Notifications still arrive; click the tray icon to open it."
+          after={
+            <Switch variant="Primary" value={startMinimized} onChange={handleStartMinimized} />
+          }
+        />
+      )}
     </SequenceCard>
   );
 }

src/app/utils/videoEmbed.ts

@@ -363,9 +363,11 @@ const SOUNDCLOUD_PROFILE_TABS = new Set([
 export function isSoundCloudTrack(url: string): boolean {
   try {
     const { hostname, pathname } = new URL(url);
-    // NOTE: on.soundcloud.com short links are NOT handled here — the w.soundcloud
-    // widget resolver doesn't follow the redirect; supporting them needs an oEmbed
-    // round-trip (soundcloud.com/oembed is CORS-enabled) to get the canonical URL.
+    // on.soundcloud.com short links are not matched here (the w.soundcloud widget
+    // doesn't follow the redirect), but they still embed: Synapse follows the
+    // redirect when building the preview, and UrlPreviewCard's og:url fallback
+    // re-parses the canonical soundcloud.com/<artist>/<track> URL (verified with
+    // a real short link, Gitea #200).
     if (hostname.replace(/^www\./, '') !== 'soundcloud.com') return false;
     // /<artist>/<track|sets/set> — at least two segments, not a bare profile
     const parts = pathname

src/index.tsx

@@ -22,7 +22,14 @@ import { cleanupSearchCacheIfSignedOut } from './client/initMatrix';
 document.body.classList.add(configClass, varsClass);
 
 // Register Service Worker
-if ('serviceWorker' in navigator) {
+// Service workers only register on http(s) pages. The desktop app loads from
+// `tauri://localhost` in debug builds (and on any platform where the localhost
+// plugin isn't used), where register() rejects: that surfaced in Sentry as an
+// unhandled "must be called with a script URL whose protocol is either HTTP or
+// HTTPS". Skip it there; the app works without a SW, only authenticated media
+// falls back to the client's own fetch.
+const swProtocolOk = window.location.protocol === 'https:' || window.location.protocol === 'http:';
+if ('serviceWorker' in navigator && swProtocolOk) {
   const swUrl =
     import.meta.env.MODE === 'production'
       ? `${trimTrailingSlash(import.meta.env.BASE_URL)}/sw.js`
@@ -39,7 +46,11 @@ if ('serviceWorker' in navigator) {
   // never route. Production sw.js is a classic bundled script.
   navigator.serviceWorker
     .register(swUrl, import.meta.env.MODE === 'production' ? undefined : { type: 'module' })
-    .then(sendSessionToSW);
+    .then(sendSessionToSW)
+    .catch((err) => {
+      // e.g. a private window with SWs disabled; the app still works.
+      console.warn('Service worker registration failed', err);
+    });
   navigator.serviceWorker.ready.then(sendSessionToSW);
 
   navigator.serviceWorker.addEventListener('message', (ev) => {