fix(identity-service): KYC成功后发布KYCVerified事件

之前实名认证成功后只更新数据库，没有发布事件，
导致planting-service无法收到通知来创建合同签署任务。

修改内容：
- 注入 EventPublisherService
- 查询时增加 accountSequence 字段
- 认证成功后发布 KYCVerifiedEvent 到 identity.KYCVerified topic

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

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

@@ -9,6 +9,8 @@ import { SmsService } from '@/infrastructure/external/sms/sms.service';
 import { StorageService } from '@/infrastructure/external/storage/storage.service';
 import { AliyunKycProvider } from '@/infrastructure/external/kyc/aliyun-kyc.provider';
 import { ApplicationError } from '@/shared/exceptions/domain.exception';
+import { EventPublisherService } from '@/infrastructure/kafka/event-publisher.service';
+import { KYCVerifiedEvent } from '@/domain/events';
 
 // KYC 综合状态枚举
 export enum KycStatus {
@@ -39,6 +41,7 @@ export class KycApplicationService {
     private readonly smsService: SmsService,
     private readonly storageService: StorageService,
     private readonly aliyunKycProvider: AliyunKycProvider,
+    private readonly eventPublisher: EventPublisherService,
   ) {}
 
   /**
@@ -233,6 +236,7 @@ export class KycApplicationService {
         realNameVerified: true,
         kycStatus: true,
         phoneNumber: true,
+        accountSequence: true,
       },
     });
 
@@ -303,6 +307,21 @@ export class KycApplicationService {
 
         this.logger.log(`[KYC] [Level1] Verification SUCCESS for user: ${userId}`);
 
+        // 发布 KYCVerified 事件，通知其他服务（如 planting-service）
+        try {
+          const verifiedAt = new Date();
+          const event = new KYCVerifiedEvent({
+            userId,
+            accountSequence: user.accountSequence,
+            verifiedAt,
+          });
+          await this.eventPublisher.publish(event);
+          this.logger.log(`[KYC] [Level1] Published KYCVerified event for user: ${userId}, accountSequence: ${user.accountSequence}`);
+        } catch (eventError) {
+          // 事件发布失败不影响 KYC 结果，只记录日志
+          this.logger.error(`[KYC] [Level1] Failed to publish KYCVerified event for user: ${userId}`, eventError);
+        }
+
         return {
           success: true,
           level: 1,