fix: id和original_name隐藏字段分开判断，避免空id导致新增

internal/storage/assets_repo.go

@@ -120,8 +120,13 @@ func (r *AssetsRepo) SaveVideoSource(id int, name string, sourceType string, are
     }
     now := time.Now().Format(time.RFC3339)
     if id > 0 {
-        // Update existing by ID
-        _, err := r.db.Exec(`
+        // Check name uniqueness before update
+        var existingID int
+        err := r.db.QueryRow(`SELECT id FROM video_sources WHERE name = ? AND id != ?`, name, id).Scan(&existingID)
+        if err == nil {
+            return fmt.Errorf("视频源名称 %q 已存在", name)
+        }
+        _, err = r.db.Exec(`
 UPDATE video_sources SET name=?, source_type=?, area=?, description=?, body_json=?, updated_at=?
 WHERE id=?`, name, sourceType, area, description, bodyJSON, now, id)
         return err

internal/web/ui/templates/assets.html

@@ -232,7 +232,8 @@ toggleIntegrationFields('{{.AssetIntegration.Type}}');
 </div>
 {{if .AssetVideoSource}}
 <form method="post" action="/assets/video-sources">
-  {{if .AssetVideoSource}}<input type="hidden" name="id" value="{{.AssetVideoSource.ID}}"><input type="hidden" name="original_name" value="{{.AssetVideoSource.Name}}">{{end}}
+  {{if .AssetVideoSource.ID}}<input type="hidden" name="id" value="{{.AssetVideoSource.ID}}">{{end}}
+  {{if .AssetVideoSource.Name}}<input type="hidden" name="original_name" value="{{.AssetVideoSource.Name}}">{{end}}
   <div class="card editor-state {{if .AssetVideoSourceEditing}}editing{{else}}readonly{{end}}">
     <div class="section-title">
       <div>