idempotency key delivery fix

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

@@ -1,3 +1,4 @@
+import 'package:pshared/api/responses/payment/quotation.dart';
 import 'package:pshared/models/payment/fees/line.dart';
 import 'package:pshared/models/payment/fx/quote.dart';
 import 'package:pshared/models/payment/money.dart';
@@ -23,3 +24,29 @@ class PaymentQuote {
     required this.fxQuote,
   });
 }
+
+class PaymentQuoteX extends PaymentQuote {
+  final String idempotencyKey;
+
+  const PaymentQuoteX({
+    required super.quoteRef,
+    required super.debitAmount,
+    required super.expectedSettlementAmount,
+    required super.expectedFeeTotal,
+    required super.feeLines,
+    required super.networkFee,
+    required super.fxQuote,
+    required this.idempotencyKey,
+  });
+
+  factory PaymentQuoteX.build({required PaymentQuote quote, required String idempotencyKey}) => PaymentQuoteX(
+    quoteRef: quote.quoteRef,
+    debitAmount: quote.debitAmount,
+    expectedSettlementAmount: quote.expectedSettlementAmount,
+    expectedFeeTotal: quote.expectedFeeTotal,
+    feeLines: quote.feeLines,
+    networkFee: quote.networkFee,
+    fxQuote: quote.fxQuote,
+    idempotencyKey: idempotencyKey,
+  );
+}

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

@@ -4,6 +4,7 @@ import 'package:pshared/models/payment/quote_aggregate.dart';
 
 class PaymentQuotes {
   final String quoteRef;
+  final String idempotencyKey;
   final PaymentQuoteAggregate? aggregate;
   final List<PaymentQuote>? quotes;
 
@@ -11,5 +12,6 @@ class PaymentQuotes {
     required this.quoteRef,
     required this.aggregate,
     required this.quotes,
+    required this.idempotencyKey,
   });
 }