chore(pwa): reconcile dual service worker after mobile-app-bootstrap merge

The mobile bootstrap shipped a hand-written public/sw.js plus a manual
navigator.serviceWorker.register('/sw.js') in main.tsx. The offline-sync
Workbox SW (vite-plugin-pwa, generateSW) functionally supersedes it
(NetworkOnly for /api,/collab,/socket.io, navigateFallback to the app shell,
runtime caching) and adds precache + prompt-based updates, so:

- Remove the hand-written apps/client/public/sw.js.
- Remove the manual SW registration block from main.tsx; registration is now
  owned by <PwaUpdatePrompt/> via useRegisterSW (skipped in Capacitor native).
- Regenerate pnpm-lock.yaml for the merged Capacitor + @nestjs/swagger deps.

Kept from mobile-app-bootstrap: the richer manifest.json (offline-sync uses
manifest:false), capacitor.config.ts, the apple-touch-icon, and all server
mobile-auth/CORS/Swagger changes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/client/src/main.tsx

@@ -85,12 +85,8 @@ root.render(
   </BrowserRouter>,
 );
 
-// Register the service worker for PWA installability and an offline app shell.
-// Production only: in dev the Vite server and HMR must not be intercepted.
-if (import.meta.env.PROD && "serviceWorker" in navigator) {
-  window.addEventListener("load", () => {
-    navigator.serviceWorker.register("/sw.js").catch((err) => {
-      console.error("Service worker registration failed:", err);
-    });
-  });
-}
+// Service worker registration is owned by <PwaUpdatePrompt /> above (via
+// vite-plugin-pwa's useRegisterSW: Workbox precache + prompt-based updates,
+// and skipped inside the Capacitor native WebView). The earlier hand-written
+// /sw.js registration from the mobile bootstrap was removed here to avoid a
+// double registration / competing service worker.