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>

index.js

@@ -3,9 +3,17 @@
  */
 
 import { AppRegistry, Text, TextInput } from 'react-native';
+import notifee from '@notifee/react-native';
 import App from './App';
 import { name as appName } from './app.json';
 
+// Required by Notifee: handles notification interactions that happen while the
+// app is in the background or quit. Tapping a notification opens the app via
+// the default press action, so no extra work is needed here.
+notifee.onBackgroundEvent(async () => {
+  // No-op: the default press action launches the app.
+});
+
 const customTextProps = {
   style: {
     fontFamily: 'Nunito-Regular',