feat(checkout): show candidate DNI distance

src/app/core/services/checkout.service.ts

@@ -84,6 +84,7 @@ export type PurchasePaymentCandidateReason =
 
 export interface PurchasePaymentCandidatePrimaryResponse {
   reason: PurchasePaymentCandidateReason;
+  dni_distance: number | null;
   payment_amount: string;
   purchase_amount: string;
   amount_difference: string;

src/app/features/store/pages/purchase-status-page/purchase-status-page.component.spec.ts

@@ -169,6 +169,7 @@ describe('PurchaseStatusPageComponent', () => {
         candidate_count: 2,
         primary: {
           reason: 'exact_dni_near_amount',
+          dni_distance: 0,
           payment_amount: '49000.00',
           purchase_amount: '50000.00',
           amount_difference: '1000.00',

src/app/features/store/pages/purchase-status-page/purchase-status-page.component.ts

@@ -188,7 +188,9 @@ export class PurchaseStatusPageComponent implements OnInit, OnDestroy {
         case 'exact_dni_near_amount':
           return `El DNI coincide, pero el monto transferido tiene una diferencia de ${this.formatCurrency(primary.amount_difference)}.`;
         case 'exact_amount_different_dni':
-          return 'El monto coincide, pero el DNI del pagador es diferente.';
+          return primary.dni_distance === null
+            ? 'El monto coincide, pero el DNI del pagador es diferente.'
+            : `El monto coincide, pero el DNI del pagador presenta ${primary.dni_distance} ${primary.dni_distance === 1 ? 'diferencia' : 'diferencias'} de escritura.`;
       }
     })();