附件下载时返回版本

app/Http/Resources/API/FileDownloadResource.php

@@ -21,6 +21,7 @@ class FileDownloadResource extends JsonResource
             'download_url' => Storage::url($this->pathname),
             'extension' => $this->extension,
             'size' => $this->size,
+            'version' => $this->version,
         ];
     }
 }