feat: 产品视频改后台上传，promotion-media 公开访问；gitignore 大文件；保留原文件名上传

Made-with: Cursor

admin/src/views/files/FileManage.vue

@@ -56,11 +56,15 @@
     </el-card>
 
     <!-- 上传前选择是否可下载 -->
-    <el-dialog v-model="uploadDialogVisible" title="上传文件" width="400px" :close-on-click-modal="false">
-      <el-form label-width="100px">
+    <el-dialog v-model="uploadDialogVisible" title="上传文件" width="440px" :close-on-click-modal="false">
+      <el-form label-width="112px">
         <el-form-item label="当前目录">
           <span>{{ currentPath || '根目录' }}</span>
         </el-form-item>
+        <el-form-item label="保留原文件名">
+          <el-switch v-model="uploadPreserveFilename" />
+          <span class="form-hint">开启后覆盖同路径同名文件；首页「产品视频」须上传到 <code>promotion/视频发布/…</code> 并开启此项</span>
+        </el-form-item>
         <el-form-item label="允许下载">
           <el-switch v-model="uploadDownloadable" />
         </el-form-item>
@@ -100,7 +104,8 @@ const loading = ref(false)
 const currentPath = ref('')
 const uploading = ref(false)
 const uploadDialogVisible = ref(false)
-const uploadDownloadable = ref(true)
+const uploadDownloadable = ref(false)
+const uploadPreserveFilename = ref(false)
 const pendingFile = ref(null)
 const showNewFolder = ref(false)
 const newFolderName = ref('')
@@ -152,7 +157,9 @@ watch([siteId, currentPath], fetchList)
 
 const beforeUpload = (file) => {
   pendingFile.value = file
-  uploadDownloadable.value = true
+  const p = (currentPath.value || '').replace(/^\//, '')
+  uploadPreserveFilename.value = p.startsWith('promotion/')
+  uploadDownloadable.value = !uploadPreserveFilename.value
   uploadDialogVisible.value = true
   return false
 }
@@ -163,7 +170,8 @@ const doUpload = async () => {
   try {
     await uploadSiteAsset(siteId.value, pendingFile.value, {
       folder: currentPath.value || undefined,
-      downloadable: uploadDownloadable.value
+      downloadable: uploadDownloadable.value,
+      preserveFilename: uploadPreserveFilename.value
     })
     ElMessage.success('上传成功')
     uploadDialogVisible.value = false
@@ -216,6 +224,8 @@ onMounted(() => fetchSites().then(() => fetchList()))
 
 <style scoped>
 .file-manage .tip { color: #666; font-size: 14px; }
+.form-hint { display: block; margin-top: 6px; font-size: 12px; color: #909399; line-height: 1.4; }
+.form-hint code { font-size: 11px; }
 .module-toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
 .breadcrumb-wrap { margin-top: 12px; }
 .subdirs { margin-top: 8px; font-size: 13px; color: #666; }