fix: 修复 mining-blockchain-service Kafka consumer group 冲突

- mining-blockchain-service 使用独立的 consumer group ID，避免与 blockchain-service 冲突
- withdrawal-event-consumer: blockchain-service-withdrawal-events -> mining-blockchain-service-withdrawal-events
- mpc-event-consumer: blockchain-service-mpc-events -> mining-blockchain-service-mpc-events
- deposit-ack-consumer: blockchain-service-deposit-acks -> mining-blockchain-service-deposit-acks
- 更新 docker-compose.yml 和 kafka.config.ts 的默认配置

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

backend/services/identity-service/src/application/services/user-application.service.ts

@@ -171,6 +171,9 @@ export class UserApplicationService {
     // 7. 保存账户
     await this.userRepository.save(account);
 
+    // 7.1 更新事件中的 userId（save 后才有真实 userId）
+    account.updateEventsUserId();
+
     // 8. 生成 Token
     const tokens = await this.tokenService.generateTokenPair({
       userId: account.userId.toString(),
@@ -352,7 +355,10 @@ export class UserApplicationService {
     });
     this.logger.log(`[REGISTER] Tokens generated`);
 
-    // 13. 发布领域事件
+    // 13. 更新事件中的 userId（save 后才有真实 userId）
+    account.updateEventsUserId();
+
+    // 14. 发布领域事件
     this.logger.log(
       `[REGISTER] Publishing ${account.domainEvents.length} domain events...`,
     );
@@ -523,7 +529,10 @@ export class UserApplicationService {
     });
     this.logger.log(`[REGISTER_NO_SMS] Tokens generated`);
 
-    // 11. 发布领域事件
+    // 11. 更新事件中的 userId（save 后才有真实 userId）
+    account.updateEventsUserId();
+
+    // 12. 发布领域事件
     this.logger.log(
       `[REGISTER_NO_SMS] Publishing ${account.domainEvents.length} domain events...`,
     );
@@ -864,6 +873,10 @@ export class UserApplicationService {
 
     await this.userRepository.save(account);
     await this.redisService.delete(`sms:register:${phoneNumber.value}`);
+
+    // 更新事件中的 userId（save 后才有真实 userId）
+    account.updateEventsUserId();
+
     await this.eventPublisher.publishAll(account.domainEvents);
     account.clearDomainEvents();
 

backend/services/identity-service/src/domain/aggregates/user-account/user-account.aggregate.ts

@@ -498,6 +498,22 @@ export class UserAccount {
     this._domainEvents = [];
   }
 
+  /**
+   * 更新领域事件中的 userId
+   *
+   * [2026-01-29] 修复：事件在 aggregate 创建时添加，此时 userId 是临时值 0
+   * 在 repository.save() 后调用此方法，将事件中的 userId 更新为数据库生成的真实值
+   */
+  updateEventsUserId(): void {
+    const realUserId = this._userId.toString();
+    // 只更新 userId 为 '0' 的事件（即新创建时的临时值）
+    for (const event of this._domainEvents) {
+      if ('payload' in event && (event as any).payload?.userId === '0') {
+        (event as any).payload.userId = realUserId;
+      }
+    }
+  }
+
   /**
    * 创建钱包生成事件（用于重试）
    *

backend/services/mining-blockchain-service/docker-compose.yml

@@ -29,8 +29,8 @@ services:
       REDIS_DB: 8
       # Kafka (shared)
       KAFKA_BROKERS: rwa-kafka:29092
-      KAFKA_CLIENT_ID: blockchain-service
+      KAFKA_CLIENT_ID: mining-blockchain-service
-      KAFKA_GROUP_ID: blockchain-service-group
+      KAFKA_GROUP_ID: mining-blockchain-service-group
       # Blockchain RPC
       KAVA_RPC_URL: https://evm.kava.io
       BSC_RPC_URL: https://bsc-dataseed.binance.org

backend/services/mining-blockchain-service/src/config/kafka.config.ts

@@ -2,6 +2,6 @@ import { registerAs } from '@nestjs/config';
 
 export default registerAs('kafka', () => ({
   brokers: (process.env.KAFKA_BROKERS || 'localhost:9092').split(','),
-  clientId: process.env.KAFKA_CLIENT_ID || 'blockchain-service',
+  clientId: process.env.KAFKA_CLIENT_ID || 'mining-blockchain-service',
-  groupId: process.env.KAFKA_GROUP_ID || 'blockchain-service-group',
+  groupId: process.env.KAFKA_GROUP_ID || 'mining-blockchain-service-group',
 }));

backend/services/mining-blockchain-service/src/infrastructure/kafka/deposit-ack-consumer.service.ts

@@ -39,8 +39,8 @@ export class DepositAckConsumerService implements OnModuleInit, OnModuleDestroy
     const brokersEnv = this.configService.get<string>('KAFKA_BROKERS');
     const brokersConfig = this.configService.get<string[]>('kafka.brokers');
     const brokers: string[] = brokersEnv?.split(',') || brokersConfig || ['localhost:9092'];
-    const clientId = this.configService.get<string>('kafka.clientId') || 'blockchain-service';
+    const clientId = this.configService.get<string>('kafka.clientId') || 'mining-blockchain-service';
-    const groupId = 'blockchain-service-deposit-acks';
+    const groupId = 'mining-blockchain-service-deposit-acks';
 
     this.logger.log(`[INIT] Deposit ACK Consumer initializing...`);
     this.logger.log(`[INIT] ClientId: ${clientId}`);

backend/services/mining-blockchain-service/src/infrastructure/kafka/mpc-event-consumer.service.ts

@@ -82,8 +82,8 @@ export class MpcEventConsumerService implements OnModuleInit, OnModuleDestroy {
 
   async onModuleInit() {
     const brokers = this.configService.get<string>('KAFKA_BROKERS')?.split(',') || ['localhost:9092'];
-    const clientId = this.configService.get<string>('KAFKA_CLIENT_ID') || 'blockchain-service';
+    const clientId = this.configService.get<string>('KAFKA_CLIENT_ID') || 'mining-blockchain-service';
-    const groupId = 'blockchain-service-mpc-events';
+    const groupId = 'mining-blockchain-service-mpc-events';
 
     this.logger.log(`[INIT] MPC Event Consumer for blockchain-service initializing...`);
     this.logger.log(`[INIT] ClientId: ${clientId}`);

backend/services/mining-blockchain-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts

@@ -54,8 +54,8 @@ export class WithdrawalEventConsumerService implements OnModuleInit, OnModuleDes
 
   async onModuleInit() {
     const brokers = this.configService.get<string>('KAFKA_BROKERS')?.split(',') || ['localhost:9092'];
-    const clientId = this.configService.get<string>('KAFKA_CLIENT_ID') || 'blockchain-service';
+    const clientId = this.configService.get<string>('KAFKA_CLIENT_ID') || 'mining-blockchain-service';
-    const groupId = 'blockchain-service-withdrawal-events';
+    const groupId = 'mining-blockchain-service-withdrawal-events';
 
     this.logger.log(`[INIT] Withdrawal Event Consumer initializing...`);
     this.logger.log(`[INIT] ClientId: ${clientId}`);