feat(checkout): implement authentication guard for checkout route and add bank account service

src/app/features/store/pages/checkout-page/checkout-page.component.html

@@ -15,7 +15,7 @@
             [paymentMethods]="paymentMethods"
             [selectedPaymentMethod]="selectedPaymentMethod()"
             [copiedTransferField]="copiedTransferField()"
-            [transferAccount]="transferAccount"
+            [transferAccount]="transferAccount()"
             (paymentMethodChange)="selectPaymentMethod($event)"
             (copyTransferValue)="copyTransferValue($event.field, $event.value)"
             (cancelStep)="onCancel()"

src/app/features/store/pages/checkout-page/checkout-page.component.ts

@@ -4,6 +4,9 @@ import { Router } from '@angular/router';
 import { startWith } from 'rxjs';
 
 import { CartService } from '../../../../core/services/cart/cart.service';
+import { TenantService } from '../../../../core/services/tenant.service';
+import { CheckoutService } from '../../../../core/services/checkout.service';
+import { BankAccount } from '../../../../core/services/tenant.interface';
 import { CartItem } from '../../../../core/services/cart/cart.interface';
 import { CartComponent, CartItemMock } from '../../../../shared/components/cart/cart.component';
 import { StepComponent } from '../../../../shared/components/stepper/step.component';
@@ -30,6 +33,8 @@ export class CheckoutPageComponent {
   private readonly formBuilder = inject(FormBuilder);
   private readonly cartService = inject(CartService);
   private readonly router = inject(Router);
+  private readonly tenantService = inject(TenantService);
+  private readonly checkoutService = inject(CheckoutService);
 
   @ViewChild(StepperComponent) stepper!: StepperComponent;
 
@@ -63,17 +68,36 @@ export class CheckoutPageComponent {
   ];
   protected readonly selectedPaymentMethod = signal<PaymentMethod>('qr');
   protected readonly copiedTransferField = signal<TransferField | null>(null);
-  protected readonly transferAccount: TransferAccount = {
+  protected readonly transferAccount = signal<TransferAccount>({
     titular: 'Nombre y Apellido',
     entidad: 'TelePagos',
     cvu: '0000000000000000000000',
     alias: 'telepagos.ar'
-  };
+  });
 
   constructor() {
     this.form.statusChanges
       .pipe(startWith(this.form.status))
       .subscribe(() => this.isStep1Valid.set(this.form.valid));
+
+    void this.loadSelectedBankAccount();
+  }
+
+  private async loadSelectedBankAccount(): Promise<void> {
+    const tenant = this.tenantService.tenant();
+    if (!tenant) return;
+
+    try {
+      const data = await this.checkoutService.getSelectedBankAccount(tenant.codigo);
+      this.transferAccount.set({
+        titular: data.titular,
+        entidad: data.entidad,
+        cvu: data.cvu,
+        alias: data.alias
+      });
+    } catch (error) {
+      console.error('Failed to load selected bank account:', error);
+    }
   }
 
   private mapCartItemToMock(item: CartItem): CartItemMock {