feat: wire cashbox export and subscription dialogs into Cashbox page

Adds an Export button (opens CashboxExportDialog directly) plus a
secondary menu (opens CashboxExportSubscriptionDialog) to the journal
toolbar, gated by the existing canBook permission signal.

myteamwallet_frontend_modern/src/app/features/team/cashbox/cashbox.html

@@ -178,6 +178,25 @@
         }
       </mat-select>
     </mat-form-field>
+    @if (canBook()) {
+      <button mat-stroked-button type="button" (click)="openExportDialog()">
+        <mat-icon>download</mat-icon>
+        Export
+      </button>
+      <button
+        mat-icon-button
+        type="button"
+        [matMenuTriggerFor]="exportMenu"
+        aria-label="Weitere Exportoptionen"
+      >
+        <mat-icon>more_vert</mat-icon>
+      </button>
+      <mat-menu #exportMenu="matMenu">
+        <button mat-menu-item (click)="openExportSubscriptionDialog()">
+          Automatischen Versand einrichten
+        </button>
+      </mat-menu>
+    }
   </div>
 
   <ag-grid-angular

myteamwallet_frontend_modern/src/app/features/team/cashbox/cashbox.spec.ts

@@ -281,4 +281,29 @@ describe('Cashbox', () => {
       expect.objectContaining({ amount: 0, note: '', type: 11 }),
     );
   });
+
+  it('opens the cashbox export dialog when the treasurer clicks Export', async () => {
+    const { fixture, dialog } = await setup();
+    fixture.detectChanges();
+
+    const exportButton = [...(fixture.nativeElement as HTMLElement).querySelectorAll('button')].find(
+      (btn) => btn.textContent?.includes('Export'),
+    );
+    exportButton?.click();
+
+    expect(dialog.open).toHaveBeenCalledWith(
+      expect.anything(),
+      expect.objectContaining({ data: { teamId: expect.any(Number) } }),
+    );
+  });
+
+  it('hides the Export button from a member without booking rights', async () => {
+    const { fixture } = await setup(1);
+    fixture.detectChanges();
+
+    const exportButton = [...(fixture.nativeElement as HTMLElement).querySelectorAll('button')].find(
+      (btn) => btn.textContent?.includes('Export'),
+    );
+    expect(exportButton).toBeUndefined();
+  });
 });

myteamwallet_frontend_modern/src/app/features/team/cashbox/cashbox.ts

@@ -10,6 +10,7 @@ import { MatDialog } from '@angular/material/dialog';
 import { MatFormFieldModule } from '@angular/material/form-field';
 import { MatIconModule } from '@angular/material/icon';
 import { MatInputModule } from '@angular/material/input';
+import { MatMenuModule } from '@angular/material/menu';
 import { MatSelectModule } from '@angular/material/select';
 import { MatSnackBar, MatSnackBarModule } from '@angular/material/snack-bar';
 import { AgGridAngular } from 'ag-grid-angular';
@@ -38,6 +39,8 @@ import {
 } from '../../../models/transaction.model';
 import { ConfirmDialog, ConfirmDialogData } from '../../../shared/confirm-dialog/confirm-dialog';
 import { ContextHelp } from '../../../shared/context-help/context-help';
+import { CashboxExportDialog } from './cashbox-export-dialog/cashbox-export-dialog';
+import { CashboxExportSubscriptionDialog } from './cashbox-export-subscription-dialog/cashbox-export-subscription-dialog';
 import '../../../shared/ag-grid/ag-grid-modules';
 import { teamwalletGridTheme } from '../../../shared/ag-grid/ag-grid-theme';
 import { AmountCellRenderer } from '../../../shared/ag-grid/amount-cell-renderer';
@@ -72,6 +75,7 @@ const JOURNAL_TYPE_OPTIONS: { value: string; label: string }[] = [
     MatFormFieldModule,
     MatIconModule,
     MatInputModule,
+    MatMenuModule,
     MatSelectModule,
     MatSnackBarModule,
     ContextHelp,
@@ -396,6 +400,18 @@ export class Cashbox {
     });
   }
 
+  protected openExportDialog(): void {
+    const teamId = this.team()?.id;
+    if (!teamId) return;
+    this.dialog.open(CashboxExportDialog, { data: { teamId } });
+  }
+
+  protected openExportSubscriptionDialog(): void {
+    const teamId = this.team()?.id;
+    if (!teamId) return;
+    this.dialog.open(CashboxExportSubscriptionDialog, { data: { teamId } });
+  }
+
   protected typeLabel(type: string): string {
     return (
       {