fix(cdc): 修复 auth-service 与 mining-admin-service 的 CDC 事件同步

- auth-service: 将 outbox topic 从 auth.events 改为 mining-admin.auth.users
- mining-admin-service: 添加 user.registered 和 user.kyc_verified 事件处理器
- 确保 auth-service 发布的事件能被 mining-admin-service 正确接收和处理

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

backend/services/auth-service/src/application/services/outbox.service.ts

@@ -48,7 +48,7 @@ export class OutboxService {
 
   private getTopicForEvent(event: DomainEvent): string {
     // 所有用户相关事件发到同一个 topic
-    return 'auth.events';
+    return 'mining-admin.auth.users';
   }
 
   private getAggregateId(event: DomainEvent): string {

backend/services/mining-admin-service/src/infrastructure/kafka/cdc-sync.service.ts

@@ -41,6 +41,11 @@ export class CdcSyncService implements OnModuleInit {
       'UserCreated',
       this.handleUserCreated.bind(this),
     );
+    // auth-service 发布的 user.registered 事件
+    this.cdcConsumer.registerServiceHandler(
+      'user.registered',
+      this.handleUserRegistered.bind(this),
+    );
     this.cdcConsumer.registerServiceHandler(
       'UserUpdated',
       this.handleUserUpdated.bind(this),
@@ -49,6 +54,11 @@ export class CdcSyncService implements OnModuleInit {
       'KycStatusChanged',
       this.handleKycStatusChanged.bind(this),
     );
+    // auth-service 发布的 user.kyc_verified 事件
+    this.cdcConsumer.registerServiceHandler(
+      'user.kyc_verified',
+      this.handleKycStatusChanged.bind(this),
+    );
 
     // ===========================================================================
     // 从 contribution-service 同步算力数据
@@ -279,6 +289,39 @@ export class CdcSyncService implements OnModuleInit {
     }
   }
 
+  /**
+   * 处理 auth-service 发布的 user.registered 事件
+   * payload: { accountSequence, phone, source, registeredAt }
+   */
+  private async handleUserRegistered(event: ServiceEvent): Promise<void> {
+    const { payload } = event;
+
+    try {
+      await this.prisma.syncedUser.upsert({
+        where: { accountSequence: payload.accountSequence },
+        create: {
+          originalUserId: payload.accountSequence, // 使用 accountSequence 作为 originalUserId
+          accountSequence: payload.accountSequence,
+          phone: payload.phone,
+          status: 'ACTIVE',
+          kycStatus: 'PENDING',
+          realName: null,
+          isLegacyUser: payload.source === 'V1',
+          createdAt: new Date(payload.registeredAt),
+        },
+        update: {
+          phone: payload.phone,
+          isLegacyUser: payload.source === 'V1',
+        },
+      });
+
+      await this.recordProcessedEvent(event);
+      this.logger.log(`Synced user from auth-service: ${payload.accountSequence}`);
+    } catch (error) {
+      this.logger.error(`Failed to sync user from auth-service: ${payload.accountSequence}`, error);
+    }
+  }
+
   private async handleUserUpdated(event: ServiceEvent): Promise<void> {
     const { payload } = event;