fix: pin the clobbered JSON keys with @JsonKey and surface 5 fields the native SDKs already support

ios/Classes/SwiftPokepaySdkPlugin.swift

@@ -506,7 +506,8 @@ class MethodCallTask {
             let accountId = args["accountId"] as! String
             let couponId = args["couponId"] as! String
             let isReceived = args["is_received"] as! Bool
-            client.send(BankAPI.Account.PatchCouponDetail(accountId: accountId, couponId: couponId,isReceived: isReceived),handler: self.after)
+            let code = args["code"] as? String
+            client.send(BankAPI.Account.PatchCouponDetail(accountId: accountId, couponId: couponId,isReceived: isReceived, code: code),handler: self.after)
         case "receiveMessageAttachment":
             let env = flutterEnvToSDKEnv(ienv: args["env"] as! Int32)
             let accessToken = args["accessToken"] as! String

lib/bank_api/account.dart

@@ -151,6 +151,7 @@ extension AccountAPI on PokepayAPI {
     required String accountId,
     required String couponId,
     required bool isReceived,
+    String? code,
   }) async {
     return await invokeMethod<CouponDetail>(
       (j) => CouponDetail.fromJson(j),
@@ -161,6 +162,7 @@ extension AccountAPI on PokepayAPI {
         'accountId': accountId,
         'couponId': couponId,
         'is_received': isReceived,
+        'code': code,
       },
     );
   }

lib/responses/bankpay_redirect_url.dart

@@ -4,7 +4,11 @@ part 'bankpay_redirect_url.g.dart';
 
 @JsonSerializable()
 class BankPayRedirectUrl {
+  // このエンドポイントのレスポンスキーは snake_case ではなく camelCase のため、
+  // field_rename: snake を @JsonKey で打ち消す。
+  @JsonKey(name: 'redirectUrl')
   final String redirectUrl;
+  @JsonKey(name: 'paytreeCustomerNumber')
   final String? paytreeCustomerNumber;
 
   BankPayRedirectUrl({

lib/responses/cvs_authorization.dart

@@ -13,6 +13,13 @@ class CvsAuthorization {
   final String tel;
   final String payLimit;
   final Account account;
+  // コンビニ払込票の URL・受付番号と、完了/取消時刻。
+  // done_at / canceled_at はネイティブ SDK (Java String / Swift String?) が
+  // サーバの RFC3339 文字列をそのまま素通しするため、payLimit と同じく String で受ける。
+  final String? haraikomiUrl;
+  final String? receiptNo;
+  final String? doneAt;
+  final String? canceledAt;
 
   CvsAuthorization({
     required this.id,
@@ -23,6 +30,10 @@ class CvsAuthorization {
     required this.tel,
     required this.payLimit,
     required this.account,
+    this.haraikomiUrl,
+    this.receiptNo,
+    this.doneAt,
+    this.canceledAt,
   });
 
   factory CvsAuthorization.fromJson(Map<String, dynamic> json) =>

lib/responses/private_money.dart

@@ -13,6 +13,9 @@ class PrivateMoney {
   final String type;
   final String unit;
   final String description;
+  // フィールド名は oneline (一行) の typo だが、公開 API 互換のため改名せず
+  // JSON キーだけ明示する。field_rename: snake では online_message になってしまう。
+  @JsonKey(name: 'oneline_message')
   final String onlineMessage;
   final String? accountImage;
   final Images images;
@@ -26,6 +29,8 @@ class PrivateMoney {
   final String? paymentActUrl;
   final String? commercialActUrl;
   final bool canUseCreditCard;
+  // field_rename: snake は大文字1文字ごとに _ を挟むため C2C が c2_c になる。
+  @JsonKey(name: 'can_use_c2c_transfer')
   final bool canUseC2CTransfer;
   final String? customDomainName;
   final List<TopupMethod>? topupMethods;