diff --git a/internal/service/config_assets.go b/internal/service/config_assets.go
index 8704ff7..b616792 100644
--- a/internal/service/config_assets.go
+++ b/internal/service/config_assets.go
@@ -878,27 +878,6 @@ func (s *ConfigPreviewService) SaveVideoSourceAsset(asset ConfigVideoSourceAsset
     return nil
 }
 
-func (s *ConfigPreviewService) RenameVideoSource(oldName, newName string) error {
-    if s == nil || s.assets == nil {
-        return fmt.Errorf("基础配置仓库未初始化")
-    }
-    if oldName == newName {
-        return nil
-    }
-    // Update recognition units referencing old name
-    units, _ := s.ListRecognitionUnits()
-    for _, u := range units {
-        if u.VideoSourceRef == oldName {
-            u.VideoSourceRef = newName
-            ref := recognitionUnitRef(u.SceneTemplateName, u.Name)
-            s.SaveRecognitionUnit(u, ref)
-        }
-    }
-    // Delete old, save new
-    s.DeleteVideoSource(oldName)
-    return nil
-}
-
 func (s *ConfigPreviewService) DeleteVideoSource(name string) error {
     if s == nil || s.assets == nil {
         return fmt.Errorf("基础配置仓库未初始化")