From a503bda26623b81659715d899835ba9819ff480e Mon Sep 17 00:00:00 2001
From: Developer <developer@rwadurian.com>
Date: Tue, 2 Dec 2025 07:09:31 -0800
Subject: [PATCH] =?UTF-8?q?fix(leaderboard-service):=20=E4=BF=AE=E5=A4=8D?=
 =?UTF-8?q?=20DI=20=E6=B3=A8=E5=85=A5=E9=97=AE=E9=A2=98=20-=20=E4=BD=BF?=
 =?UTF-8?q?=E7=94=A8=20useExisting=20=E6=9B=BF=E4=BB=A3=20useClass?=
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- ReferralServiceClient 和 IdentityServiceClient 使用 useExisting
- 避免在 DomainModule 中重新创建实例导致 HttpService 不可用
- 复用 InfrastructureModule 中已创建的实例

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

Co-Authored-By: Claude <noreply@anthropic.com>
---
 .../services/leaderboard-service/src/modules/domain.module.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/backend/services/leaderboard-service/src/modules/domain.module.ts b/backend/services/leaderboard-service/src/modules/domain.module.ts
index 9bc19e64..907bb032 100644
--- a/backend/services/leaderboard-service/src/modules/domain.module.ts
+++ b/backend/services/leaderboard-service/src/modules/domain.module.ts
@@ -11,11 +11,11 @@ import { IdentityServiceClient } from '../infrastructure/external/identity-servi
   providers: [
     {
       provide: REFERRAL_SERVICE_CLIENT,
-      useClass: ReferralServiceClient,
+      useExisting: ReferralServiceClient,
     },
     {
       provide: IDENTITY_SERVICE_CLIENT,
-      useClass: IdentityServiceClient,
+      useExisting: IdentityServiceClient,
     },
     LeaderboardCalculationService,
     VirtualRankingGeneratorService,