fix(CGTaskCard): 合成视频时使用最新的字幕记录

components/aigc/generation/CGTaskCard.client.vue

@@ -145,10 +145,24 @@ const copyTaskId = (extraMessage?: string) => {
 const isCombinationModalOpen = ref(false)
 const combinationState = ref<0 | 1 | undefined>(0)
 
-const onCombination = () => {
+const onCombination = async () => {
   isCombinationModalOpen.value = true
   combinationState.value = undefined
-  useVideoSubtitleEmbedding(props.course.video_url, props.course.subtitle_url)
+  const srtResponse = await (
+    await fetch(await fetchCourseSubtitleUrl(props.course))
+  ).blob()
+  if (!srtResponse) {
+    toast.add({
+      title: '获取字幕失败',
+      description: '无法获取字幕文件，请稍后重试',
+      color: 'red',
+      icon: 'i-tabler-alert-triangle',
+    })
+    return
+  }
+  const srtBlob = new Blob([srtResponse], { type: 'text/plain' })
+  const srtUrl = URL.createObjectURL(srtBlob)
+  useVideoSubtitleEmbedding(props.course.video_url, srtUrl)
     .then((src) => {
       startDownload(
         src,