feat: add current accounts list module with redesigned UI

- New accounts module with list, routing, and service
- Redesigned accounts-list UI with modern card layout, status badges, and action buttons
- Fixed totalRecords formatting (removed formatNumber pipe from integer count)
- Register accounts module in app.module and shell navigation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/app.module.ts

@@ -63,6 +63,7 @@ import { FiuModule } from './fiu/fiu.module';
 import { SftModule } from './sft/sft.module';
 import { DigitalModule } from './digital/digital.module';
 import { LetterMgmtModule } from './letter-mgmt/letter-mgmt.module';
+import { AccountsModule } from './accounts/accounts.module';
 import { PortalModule } from '@angular/cdk/portal';
 
 /** Main Routing Module */
@@ -162,6 +163,7 @@ export function HttpLoaderFactory(http: HttpClient) {
     SftModule,
     DigitalModule,
     LetterMgmtModule,
+    AccountsModule,
     AppRoutingModule,
     NotFoundComponent,
     CallbackComponent,