fix: 在TaskApprovalService中也添加@Lazy解决循环依赖

backend/src/main/java/com/designhub/service/TaskApprovalService.java

@@ -40,6 +40,7 @@ public class TaskApprovalService {
     private final PlatformMapper platformMapper;
     private final NotificationService notificationService;
     private final TeamScorePoolService teamScorePoolService;
+    @org.springframework.context.annotation.Lazy
     private final TaskService taskService;
     private final ConfigService configService;
     private final ObjectMapper objectMapper;