Fix

frontend/pshared/lib/data/mapper/payment/quote/quotes.dart

@@ -5,8 +5,9 @@ import 'package:pshared/models/payment/quote/quotes.dart';
 
 
 extension PaymentQuotesDTOMapper on PaymentQuotesDTO {
-  PaymentQuotes toDomain() => PaymentQuotes(
+  PaymentQuotes toDomain({String? idempotencyKey}) => PaymentQuotes(
     quoteRef: quoteRef,
+    idempotencyKey: idempotencyKey,
     aggregate: aggregate?.toDomain(),
     quotes: quotes?.map((quote) => quote.toDomain()).toList(),
   );

frontend/pshared/lib/models/payment/quote/quotes.dart

@@ -4,11 +4,13 @@ import 'package:pshared/models/payment/quote/aggregate.dart';
 
 class PaymentQuotes {
   final String quoteRef;
+  final String? idempotencyKey;
   final PaymentQuoteAggregate? aggregate;
   final List<PaymentQuote>? quotes;
 
   const PaymentQuotes({
     required this.quoteRef,
+    required this.idempotencyKey,
     required this.aggregate,
     required this.quotes,
   });

frontend/pshared/lib/provider/payment/quotation/intent_builder.dart

@@ -90,22 +90,13 @@ class QuotationIntentBuilder {
     required PaymentMethod method,
   }) {
     final name = _resolveCustomerName(method, recipient);
-    String? firstName;
+    final parts = name == null || name.trim().isEmpty
-    String? middleName;
+        ? const <String>[]
-    String? lastName;
+        : name.trim().split(RegExp(r'\s+'));
-
+    final firstName = parts.isNotEmpty ? parts.first : null;
-    if (name != null && name.isNotEmpty) {
+    final lastName = parts.length >= 2 ? parts.last : null;
-      final parts = name.split(RegExp(r'\s+'));
+    final middleName =
-      if (parts.isNotEmpty) {
+        parts.length > 2 ? parts.sublist(1, parts.length - 1).join(' ') : null;
-        firstName = parts.first;
-      }
-      if (parts.length == 2) {
-        lastName = parts.last;
-      } else if (parts.length > 2) {
-        lastName = parts.last;
-        middleName = parts.sublist(1, parts.length - 1).join(' ');
-      }
-    }
 
     return Customer(
       id: recipient?.id ?? method.recipientRef,

frontend/pshared/lib/service/payment/quotation.dart

@@ -34,6 +34,8 @@ class QuotationService {
       '/multiquote/$organizationRef',
       request.toJson(),
     );
-    return PaymentQuotesResponse.fromJson(response).quote.toDomain();
+    final parsed = PaymentQuotesResponse.fromJson(response);
+    final idempotencyKey = response['idempotencyKey'] as String?;
+    return parsed.quote.toDomain(idempotencyKey: idempotencyKey);
   }
 }