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/constants/mockData.ts

@@ -1,6 +1,7 @@
 import type {
   AccountSummary,
   ActiveLoan,
+  AppNotification,
   BankCard,
   Beneficiary,
   Branch,
@@ -41,6 +42,57 @@ export const demoUser: UserProfile = {
   },
 };
 
+export const demoNotifications: AppNotification[] = [
+  {
+    id: 'ntf_login',
+    category: 'security',
+    title: 'New sign-in detected',
+    body: 'We noticed a new sign-in on a Pixel device in Bengaluru. If this was you, no action is needed.',
+    createdAt: '2026-06-02T08:45:00+05:30',
+    read: false,
+  },
+  {
+    id: 'ntf_credit',
+    category: 'transaction',
+    title: 'Money received',
+    body: '₹24,500 was credited to your Savings account XXXX 9312 from Priya Nair.',
+    createdAt: '2026-06-02T07:10:00+05:30',
+    read: false,
+  },
+  {
+    id: 'ntf_card_bill',
+    category: 'reminder',
+    title: 'Credit card bill due soon',
+    body: 'Your card payment of ₹12,870 is due on 8 June. Pay early to avoid interest charges.',
+    createdAt: '2026-06-01T18:30:00+05:30',
+    read: false,
+  },
+  {
+    id: 'ntf_offer',
+    category: 'offer',
+    title: 'Festive cashback unlocked',
+    body: 'Get 5% cashback on UPI payments above ₹500 this week. Terms apply.',
+    createdAt: '2026-05-31T11:00:00+05:30',
+    read: true,
+  },
+  {
+    id: 'ntf_fd',
+    category: 'reminder',
+    title: 'Fixed deposit maturing',
+    body: 'Your fixed deposit of ₹1,00,000 matures on 15 June. Choose to renew or withdraw.',
+    createdAt: '2026-05-30T09:20:00+05:30',
+    read: true,
+  },
+  {
+    id: 'ntf_kyc',
+    category: 'system',
+    title: 'KYC verification complete',
+    body: 'Your KYC details have been verified successfully. All account features are now active.',
+    createdAt: '2026-05-28T16:05:00+05:30',
+    read: true,
+  },
+];
+
 export const demoAccounts: AccountSummary[] = [
   {
     id: 'acc_primary',