Add global search, in-app + push notifications, and fix card/beneficiary/scroll issues

- Global feature search for the user app, wired to the home search icon
- Notifications screen: swipe-to-delete, vanish animation, unread badge,
  and Notifee-backed foreground + background (scheduled) OS notifications
- Fix Add Beneficiary save (single source of truth via beneficiaries slice)
- Fix Cards tab scroll freeze and bottom blank space (use ScreenShell scroll)
- User-friendly toast copy across the app
- Android build tuning: parallel/caching/JVM G1 args, mobile-only ABIs

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/hooks/useAppBootstrap.ts

@@ -65,7 +65,7 @@ export const useAppBootstrap = () => {
   useEffect(() => {
     const unregister = registerUnauthorizedHandler(() => {
       dispatch(logoutSession());
-      toast('Signed out', 'info', 'Your session was refreshed for security reasons.');
+      toast('Signed out', 'info', 'For your security, your session was refreshed.');
     });
 
     return unregister;