fix(identity-service): 修复 InternalController 未注册问题

- 在 app.module.ts 的内联 ApiModule 中添加 InternalController
- 添加 InfrastructureModule 导入和 UserAccountRepositoryImpl provider
- 修正 authorization-service 的 identity-service URL 默认值

问题原因：app.module.ts 定义了内联 ApiModule，不是导入的 api.module.ts

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

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

backend/services/authorization-service/src/infrastructure/external/identity-service.client.ts

@@ -25,7 +25,7 @@ export class IdentityServiceClient implements OnModuleInit {
   private readonly enabled: boolean;
 
   constructor(private readonly configService: ConfigService) {
-    this.baseUrl = this.configService.get<string>('IDENTITY_SERVICE_URL') || 'http://identity-service:3001';
+    this.baseUrl = this.configService.get<string>('IDENTITY_SERVICE_URL') || 'http://rwa-identity-service:3000';
     this.enabled = this.configService.get<boolean>('IDENTITY_SERVICE_ENABLED') !== false;
   }
 

backend/services/identity-service/src/app.module.ts

@@ -22,6 +22,7 @@ import { HealthController } from '@/api/controllers/health.controller';
 import { ReferralsController } from '@/api/controllers/referrals.controller';
 import { AuthController } from '@/api/controllers/auth.controller';
 import { TotpController } from '@/api/controllers/totp.controller';
+import { InternalController } from '@/api/controllers/internal.controller';
 
 // Application Services
 import { UserApplicationService } from '@/application/services/user-application.service';
@@ -136,14 +137,16 @@ export class ApplicationModule {}
 
 // ============ API Module ============
 @Module({
-  imports: [ApplicationModule],
+  imports: [ApplicationModule, InfrastructureModule],
   controllers: [
     HealthController,
     UserAccountController,
     ReferralsController,
     AuthController,
     TotpController,
+    InternalController,
   ],
+  providers: [UserAccountRepositoryImpl],
 })
 export class ApiModule {}