Merge pull request #726 from DaydreamCoding/feat/dual-mode-umq

feat(gateway): 双模式用户消息队列 — 串行队列 + 软性限速

backend/internal/service/setting_service.go

@@ -1109,7 +1109,7 @@ func (s *SettingService) GetMinClaudeCodeVersion(ctx context.Context) string {
 		}
 	}
 	// singleflight: 同一时刻只有一个 goroutine 查询 DB，其余复用结果
-	result, _, _ := minVersionSF.Do("min_version", func() (any, error) {
+	result, err, _ := minVersionSF.Do("min_version", func() (any, error) {
 		// 二次检查，避免排队的 goroutine 重复查询
 		if cached, ok := minVersionCache.Load().(*cachedMinVersion); ok {
 			if time.Now().UnixNano() < cached.expiresAt {
@@ -1135,10 +1135,14 @@ func (s *SettingService) GetMinClaudeCodeVersion(ctx context.Context) string {
 		})
 		return value, nil
 	})
-	if s, ok := result.(string); ok {
-		return s
+	if err != nil {
+		return ""
 	}
-	return ""
+	ver, ok := result.(string)
+	if !ok {
+		return ""
+	}
+	return ver
 }
 
 // SetStreamTimeoutSettings 设置流超时处理配置