fix: preserve video extensions on AI design downloads

electron/api/routes/image-workspace.ts

@@ -160,9 +160,19 @@ function sendData(res: ServerResponse, data: unknown): void {
   sendJson(res, 200, { success: true, status: 200, data });
 }
 
-const IMAGE_FILE_EXTENSIONS = new Set(['.gif', '.jpeg', '.jpg', '.png', '.svg', '.webp']);
+const ASSET_FILE_EXTENSIONS = new Set([
+  '.gif',
+  '.jpeg',
+  '.jpg',
+  '.mov',
+  '.mp4',
+  '.png',
+  '.svg',
+  '.webm',
+  '.webp',
+]);
 
-function safeImageFileName(value: string, assetId: string): string {
+function safeAssetFileName(value: string, assetId: string): string {
   const fallbackId = assetId
     .replace(/[^a-zA-Z0-9_-]+/g, '-')
     .replace(/^-+|-+$/g, '')
@@ -173,7 +183,7 @@ function safeImageFileName(value: string, assetId: string): string {
     .join('')
     .replace(/[. ]+$/g, '')
     .slice(0, 120);
-  if (!sanitized || !IMAGE_FILE_EXTENSIONS.has(extname(sanitized).toLowerCase())) {
+  if (!sanitized || !ASSET_FILE_EXTENSIONS.has(extname(sanitized).toLowerCase())) {
     return fallback;
   }
   return sanitized;
@@ -186,12 +196,12 @@ async function saveAssetContent(
   assetId: string,
   defaultFileName: string,
 ): Promise<void> {
-  const fileName = safeImageFileName(defaultFileName, assetId);
+  const fileName = safeAssetFileName(defaultFileName, assetId);
   const extension = extname(fileName).slice(1);
   const options: SaveDialogOptions = {
     defaultPath: join(app.getPath('downloads'), fileName),
     filters: [
-      { name: '图片', extensions: [extension] },
+      { name: '设计资产', extensions: [extension] },
       { name: '所有文件', extensions: ['*'] },
     ],
   };
@@ -207,11 +217,14 @@ async function saveAssetContent(
   }
 
   const content = await ctx.imageWorkspace!.openAssetContent(workspaceId, assetId);
-  if (!content.ok || !content.body || !content.headers.get('content-type')?.startsWith('image/')) {
+  const contentType = content.headers.get('content-type');
+  if (!content.ok
+    || !content.body
+    || (!contentType?.startsWith('image/') && !contentType?.startsWith('video/'))) {
     throw new DesignWorkspaceModuleError(
       content.status >= 400 ? content.status : 502,
       'DESIGN_ASSET_DOWNLOAD_FAILED',
-      '生成图片暂时无法下载，请稍后重试',
+      '生成资产暂时无法下载，请稍后重试',
     );
   }
 
@@ -230,7 +243,7 @@ async function saveAssetContent(
     throw new DesignWorkspaceModuleError(
       500,
       'DESIGN_ASSET_SAVE_FAILED',
-      '图片保存失败，请重新选择位置后重试',
+      '资产保存失败，请重新选择位置后重试',
     );
   }
   sendData(res, { status: 'saved' });