添加下载功能

src/views/co-ai/index.tsx

@@ -213,6 +213,17 @@ export default defineComponent({
     };
     /** 保存图片 */
     const handleSave = async () => {
+      if(data.musicPdfUrl) {
+        const songName = data.musics[data.musicIndex]?.musicSheetName;
+        promisefiyPostMessage({
+          api: "downloadFile",
+          content: {
+            downloadUrl: data.musicPdfUrl,
+            fileName: songName,
+          },
+        });
+        return
+      }
       showLoadingToast({ message: '正在保存', duration: 0 });
       try {
         html2canvas(downRef.value, {