【代码优化】 refactor: 上传视频流程结束后统一释放临时视频地址，避免资源长期占用

src/components/common/UploadVideo/index.vue

@@ -152,14 +152,15 @@ let cancelUploadController = () => {}
 const startUpload = async () => {
   if (!currentFile.value) return
 
+  let localVideoUrl = ''
   try {
     uploading.value = true
     uploadError.value = ''
     uploadProgress.value = 0
 
     // 先提案获取视频的原信息 用本地blob
-    const blob = URL.createObjectURL(currentFile.value)
-    const metadataPromise = getVideoMetadata(blob)
+    localVideoUrl = URL.createObjectURL(currentFile.value)
+    const metadataPromise = getVideoMetadata(localVideoUrl)
     const { promise, cancel } = uploadFileApi(currentFile.value, {
       onProgress: (progress) => {
         uploadProgress.value = progress
@@ -198,6 +199,10 @@ const startUpload = async () => {
     uploading.value = false
     uploadError.value = error instanceof Error ? error.message : '上传失败，请重试'
     push.error(uploadError.value)
+  } finally {
+    if (localVideoUrl) {
+      URL.revokeObjectURL(localVideoUrl)
+    }
   }
 }