idempotency key delivery fix

frontend/pshared/lib/api/responses/payment/quotation.dart

@@ -11,8 +11,9 @@ part 'quotation.g.dart';
 class PaymentQuoteResponse extends BaseAuthorizedResponse {
 
   final PaymentQuoteDTO quote;
+  final String idempotencyKey;
 
-  const PaymentQuoteResponse({required super.accessToken, required this.quote});
+  const PaymentQuoteResponse({required super.accessToken, required this.idempotencyKey, required this.quote});
 
   factory PaymentQuoteResponse.fromJson(Map<String, dynamic> json) => _$PaymentQuoteResponseFromJson(json);
   @override

frontend/pshared/lib/data/dto/payment/quotes.dart

@@ -9,6 +9,7 @@ part 'quotes.g.dart';
 @JsonSerializable()
 class PaymentQuotesDTO {
   final String quoteRef;
+  final String idempotencyKey;
   final PaymentQuoteAggregateDTO? aggregate;
   final List<PaymentQuoteDTO>? quotes;
 
@@ -16,6 +17,7 @@ class PaymentQuotesDTO {
     required this.quoteRef,
     this.aggregate,
     this.quotes,
+    required this.idempotencyKey,
   });
 
   factory PaymentQuotesDTO.fromJson(Map<String, dynamic> json) => _$PaymentQuotesDTOFromJson(json);

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

@@ -9,11 +9,13 @@ extension PaymentQuotesDTOMapper on PaymentQuotesDTO {
     quoteRef: quoteRef,
     aggregate: aggregate?.toDomain(),
     quotes: quotes?.map((quote) => quote.toDomain()).toList(),
+    idempotencyKey: idempotencyKey
   );
 }
 
 extension PaymentQuotesMapper on PaymentQuotes {
   PaymentQuotesDTO toDTO() => PaymentQuotesDTO(
+    idempotencyKey: idempotencyKey,
     quoteRef: quoteRef,
     aggregate: aggregate?.toDTO(),
     quotes: quotes?.map((quote) => quote.toDTO()).toList(),

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,
   });
 }

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

@@ -28,10 +28,11 @@ import 'package:pshared/provider/recipient/pmethods.dart';
 import 'package:pshared/provider/resource.dart';
 import 'package:pshared/service/payment/quotation.dart';
 import 'package:pshared/utils/currency.dart';
+import 'package:pshared/utils/exception.dart';
 
 
 class QuotationProvider extends ChangeNotifier {
-  Resource<PaymentQuote> _quotation = Resource(data: null, isLoading: false, error: null);
+  Resource<PaymentQuoteX> _quotation = Resource(data: null, isLoading: false, error: null);
   late OrganizationsProvider _organizations;
   bool _isLoaded = false;
 
@@ -162,7 +163,7 @@ class QuotationProvider extends ChangeNotifier {
     return recipientName?.isNotEmpty == true ? recipientName : null;
   }
 
-  void _setResource(Resource<PaymentQuote> quotation) {
+  void _setResource(Resource<PaymentQuoteX> quotation) {
     _quotation = quotation;
     notifyListeners();
   }
@@ -181,11 +182,7 @@ class QuotationProvider extends ChangeNotifier {
       _isLoaded = true;
       _setResource(_quotation.copyWith(data: response, isLoading: false, error: null));
     } catch (e) {
-      _setResource(_quotation.copyWith(
-        data: null,
-        error: e is Exception ? e : Exception(e.toString()),
-        isLoading: false,
-      ));
+      _setResource(_quotation.copyWith(data: null, error: toException(e), isLoading: false));
     }
     notifyListeners();
     return _quotation.data;

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

@@ -16,14 +16,15 @@ class QuotationService {
   static final _logger = Logger('service.payment.quotation');
   static const String _objectType = Services.payments;
 
-  static Future<PaymentQuote> getQuotation(String organizationRef, QuotePaymentRequest request) async {
+  static Future<PaymentQuoteX> getQuotation(String organizationRef, QuotePaymentRequest request) async {
     _logger.fine('Quoting payment for organization $organizationRef');
     final response = await AuthorizationService.getPOSTResponse(
       _objectType, 
       '/quote/$organizationRef', 
       request.toJson(),
     );
-    return PaymentQuoteResponse.fromJson(response).quote.toDomain();
+    final resp = PaymentQuoteResponse.fromJson(response);
+    return PaymentQuoteX.build(quote: resp.quote.toDomain(), idempotencyKey: resp.idempotencyKey);
   }
 
   static Future<PaymentQuotes> getMultiQuotation(String organizationRef, QuotePaymentsRequest request) async {