feat(c2c): 卖单自动获取账户ID和Kava地址，移除手动输入

后端创建卖单时自动从 identity-service 获取卖家 Kava 地址并存入订单，
前端发布页面自动展示 accountSequence（只读），不再需要手动输入1.0系统ID。

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/trading-service/src/api/controllers/c2c.controller.ts

@@ -57,6 +57,8 @@ export class C2cController {
       paymentAccount: order.paymentAccount || undefined,
       paymentQrCode: order.paymentQrCode || undefined,
       paymentRealName: order.paymentRealName || undefined,
+      // 卖家 Kava 地址
+      sellerKavaAddress: order.sellerKavaAddress || undefined,
       // 超时信息
       paymentTimeoutMinutes: order.paymentTimeoutMinutes,
       confirmTimeoutMinutes: order.confirmTimeoutMinutes,

backend/services/trading-service/src/api/dto/c2c.dto.ts

@@ -168,6 +168,8 @@ export class C2cOrderResponseDto {
   paymentAccount?: string;
   paymentQrCode?: string;
   paymentRealName?: string;
+  // 卖家 Kava 地址（绿积分转账地址）
+  sellerKavaAddress?: string;
   // 超时信息
   paymentTimeoutMinutes: number;
   confirmTimeoutMinutes: number;

backend/services/trading-service/src/application/services/c2c.service.ts

@@ -3,6 +3,7 @@ import { C2cOrderRepository, C2cOrderEntity } from '../../infrastructure/persist
 import { TradingAccountRepository } from '../../infrastructure/persistence/repositories/trading-account.repository';
 import { RedisService } from '../../infrastructure/redis/redis.service';
 import { PrismaService } from '../../infrastructure/persistence/prisma/prisma.service';
+import { IdentityClient } from '../../infrastructure/identity/identity.client';
 import { Money } from '../../domain/value-objects/money.vo';
 import Decimal from 'decimal.js';
 
@@ -57,6 +58,7 @@ export class C2cService {
     private readonly tradingAccountRepository: TradingAccountRepository,
     private readonly redis: RedisService,
     private readonly prisma: PrismaService,
+    private readonly identityClient: IdentityClient,
   ) {}
 
   /**
@@ -109,16 +111,12 @@ export class C2cService {
         throw new BadRequestException('数量必须大于0');
       }
 
-      // 卖单必须提供收款信息
+      // 卖单：自动获取卖家 Kava 地址（用于绿积分转账）
+      let sellerKavaAddress: string | null = null;
       if (type === C2C_ORDER_TYPE.SELL) {
-        if (!options?.paymentMethod) {
+        sellerKavaAddress = await this.identityClient.getUserKavaAddress(accountSequence);
-          throw new BadRequestException('卖单必须提供收款方式');
+        if (!sellerKavaAddress) {
-        }
+          throw new BadRequestException('未找到您的 Kava 钱包地址，请先绑定钱包');
-        if (!options?.paymentAccount) {
-          throw new BadRequestException('卖单必须提供收款账号');
-        }
-        if (!options?.paymentRealName) {
-          throw new BadRequestException('卖单必须提供收款人实名');
         }
       }
 
@@ -169,6 +167,8 @@ export class C2cService {
         paymentAccount: options?.paymentAccount,
         paymentQrCode: options?.paymentQrCode,
         paymentRealName: options?.paymentRealName,
+        // 卖家 Kava 地址（卖单时自动获取）
+        sellerKavaAddress,
         remark: options?.remark,
       });
 

backend/services/trading-service/src/infrastructure/persistence/repositories/c2c-order.repository.ts

@@ -111,6 +111,8 @@ export class C2cOrderRepository {
     paymentAccount?: string;
     paymentQrCode?: string;
     paymentRealName?: string;
+    // 卖家 Kava 地址
+    sellerKavaAddress?: string | null;
     remark?: string;
   }): Promise<C2cOrderEntity> {
     const record = await this.prisma.c2cOrder.create({
@@ -132,6 +134,8 @@ export class C2cOrderRepository {
         paymentAccount: data.paymentAccount,
         paymentQrCode: data.paymentQrCode,
         paymentRealName: data.paymentRealName,
+        // 卖家 Kava 地址
+        sellerKavaAddress: data.sellerKavaAddress,
         remark: data.remark,
       },
     });

frontend/mining-app/lib/data/datasources/remote/trading_remote_datasource.dart

@@ -108,7 +108,6 @@ abstract class TradingRemoteDataSource {
     String? paymentAccount,
     String? paymentQrCode,
     String? paymentRealName,
-    String? systemId, // 1.0系统ID（绿积分支付必填）
     String? remark,
   });
 
@@ -467,7 +466,6 @@ class TradingRemoteDataSourceImpl implements TradingRemoteDataSource {
     String? paymentAccount,
     String? paymentQrCode,
     String? paymentRealName,
-    String? systemId, // 1.0系统ID（绿积分支付必填）
     String? remark,
   }) async {
     try {
@@ -483,7 +481,6 @@ class TradingRemoteDataSourceImpl implements TradingRemoteDataSource {
       if (paymentAccount != null) data['paymentAccount'] = paymentAccount;
       if (paymentQrCode != null) data['paymentQrCode'] = paymentQrCode;
       if (paymentRealName != null) data['paymentRealName'] = paymentRealName;
-      if (systemId != null && systemId.isNotEmpty) data['systemId'] = systemId;
       if (remark != null && remark.isNotEmpty) data['remark'] = remark;
 
       final response = await client.post(

frontend/mining-app/lib/presentation/pages/c2c/c2c_publish_page.dart

@@ -32,7 +32,6 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
   Set<String> _selectedPaymentMethods = {'GREEN_POINTS'}; // 绿积分默认选中且不可取消
   final _paymentAccountController = TextEditingController();
   final _paymentRealNameController = TextEditingController();
-  final _systemIdController = TextEditingController(); // 1.0系统ID
 
   @override
   void dispose() {
@@ -41,7 +40,6 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
     _remarkController.dispose();
     _paymentAccountController.dispose();
     _paymentRealNameController.dispose();
-    _systemIdController.dispose();
     super.dispose();
   }
 
@@ -400,32 +398,27 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
           ),
           const SizedBox(height: 16),
 
-          // 1.0系统ID（绿积分必填）
+          // 账户ID（自动读取，只读）
           const Text(
-            '1.0系统ID',
+            '账户ID',
             style: TextStyle(fontSize: 14, color: _grayText),
           ),
           const SizedBox(height: 4),
           const Text(
-            '买家将通过此ID向您转账绿积分',
+            '买家将通过此账户向您转账绿积分',
             style: TextStyle(fontSize: 12, color: _grayText),
           ),
           const SizedBox(height: 8),
-          TextField(
+          Container(
-            controller: _systemIdController,
+            width: double.infinity,
-            decoration: InputDecoration(
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
-              hintText: '请输入您的1.0系统ID',
+            decoration: BoxDecoration(
-              hintStyle: const TextStyle(color: _grayText),
+              color: _bgGray,
-              filled: true,
+              borderRadius: BorderRadius.circular(12),
-              fillColor: _bgGray,
+            ),
-              border: OutlineInputBorder(
+            child: Text(
-                borderRadius: BorderRadius.circular(12),
+              ref.watch(userNotifierProvider).accountSequence ?? '',
-                borderSide: BorderSide.none,
+              style: const TextStyle(fontSize: 15, color: _darkText),
-              ),
-              focusedBorder: OutlineInputBorder(
-                borderRadius: BorderRadius.circular(12),
-                borderSide: const BorderSide(color: _orange, width: 2),
-              ),
             ),
           ),
 
@@ -675,8 +668,6 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
     // 验证条件
     bool isValid = price > 0 && quantity > 0;
     if (isSell) {
-      // 卖单必须填写1.0系统ID（因为绿积分是必选的）
-      isValid = isValid && _systemIdController.text.trim().isNotEmpty;
       // 如果选择了其他支付方式，还需要填写收款账号和姓名
       if (_selectedPaymentMethods.any((m) => m != 'GREEN_POINTS')) {
         isValid = isValid &&
@@ -774,13 +765,6 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
 
     // 卖单验证收款信息
     if (isSell) {
-      // 必须填写1.0系统ID（绿积分是必选的）
-      if (_systemIdController.text.trim().isEmpty) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          const SnackBar(content: Text('请填写1.0系统ID'), backgroundColor: _red),
-        );
-        return;
-      }
       // 如果选择了其他支付方式，需要填写收款账号和姓名
       if (_selectedPaymentMethods.any((m) => m != 'GREEN_POINTS')) {
         if (_paymentAccountController.text.trim().isEmpty) {
@@ -832,7 +816,7 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
               const SizedBox(height: 8),
               Text('收款方式: $paymentMethodTexts'),
               const SizedBox(height: 4),
-              Text('1.0系统ID: ${_systemIdController.text.trim()}'),
+              Text('账户ID: ${ref.read(userNotifierProvider).accountSequence ?? ''}'),
               if (_selectedPaymentMethods.any((m) => m != 'GREEN_POINTS')) ...[
                 const SizedBox(height: 4),
                 Text('收款账号: ${_paymentAccountController.text.trim()}'),
@@ -874,7 +858,6 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
       paymentMethod: isSell ? _selectedPaymentMethods.join(',') : null,
       paymentAccount: isSell ? _paymentAccountController.text.trim() : null,
       paymentRealName: isSell ? _paymentRealNameController.text.trim() : null,
-      systemId: isSell ? _systemIdController.text.trim() : null,
       remark: remark.isEmpty ? null : remark,
     );
 

frontend/mining-app/lib/presentation/providers/c2c_providers.dart

@@ -87,7 +87,6 @@ class C2cTradingNotifier extends StateNotifier<C2cTradingState> {
     String? paymentAccount,
     String? paymentQrCode,
     String? paymentRealName,
-    String? systemId, // 1.0系统ID（绿积分支付必填）
     String? remark,
   }) async {
     state = state.copyWith(isLoading: true, clearError: true);
@@ -102,7 +101,6 @@ class C2cTradingNotifier extends StateNotifier<C2cTradingState> {
         paymentAccount: paymentAccount,
         paymentQrCode: paymentQrCode,
         paymentRealName: paymentRealName,
-        systemId: systemId,
         remark: remark,
       );
       state = state.copyWith(isLoading: false, lastOrder: order);