修改一些bug

download-frontend/app/page.tsx

@@ -205,37 +205,6 @@ export default function Home() {
     }
   };
 
-  const triggerBrowserDownload = async (
-    downloadUrl: string,
-    filename?: string
-  ) => {
-    try {
-      const response = await fetch(downloadUrl, {
-        mode: "cors",
-        credentials: "omit",
-      });
-      if (!response.ok) {
-        throw new Error(`文件获取失败，状态码 ${response.status.toString()}`);
-      }
-      const blob = await response.blob();
-      const objectUrl = URL.createObjectURL(blob);
-      const anchor = document.createElement("a");
-      anchor.href = objectUrl;
-      anchor.download = filename ?? "download";
-      anchor.rel = "noopener";
-      anchor.style.display = "none";
-      document.body.appendChild(anchor);
-      anchor.click();
-      document.body.removeChild(anchor);
-      URL.revokeObjectURL(objectUrl);
-    } catch (error) {
-      const message =
-        error instanceof Error ? error.message : "无法保存文件，请重试。";
-      // 仅在控制台输出，避免覆盖成功状态。用户可重新触发下载。
-      console.error("[download]", message);
-    }
-  };
-
   return (
     <main className="min-h-screen bg-gradient-to-br from-zinc-50 via-white to-zinc-100 py-16 px-4 font-sans text-zinc-900 dark:from-black dark:via-zinc-950 dark:to-black dark:text-zinc-100">
       <div className="mx-auto flex w-full max-w-4xl flex-col gap-8">
@@ -245,7 +214,7 @@ export default function Home() {
               Video Fetcher
             </span>
             <h1 className="text-3xl font-semibold tracking-tight md:text-4xl">
-              高可用视频下载服务
+              YTB视频下载服务
             </h1>
             <p className="max-w-2xl text-base text-zinc-600 dark:text-zinc-400">
               输入任意公共视频链接。系统将列出可用清晰度与格式，支持一键最佳质量下载或按需选择单独下载。
@@ -329,18 +298,14 @@ export default function Home() {
                     </span>
                     <span>自动采用服务推荐的最佳格式，适合快速下载。</span>
                     {downloads[DEFAULT_DOWNLOAD_KEY]?.status === "success" ? (
-                      <button
-                        type="button"
-                        onClick={() => {
-                          void triggerBrowserDownload(
-                            downloads[DEFAULT_DOWNLOAD_KEY].url,
-                            downloads[DEFAULT_DOWNLOAD_KEY].file
-                          );
-                        }}
-                        className="w-fit text-left text-sm font-medium text-zinc-900 underline underline-offset-4 transition hover:text-zinc-700 dark:text-zinc-200 dark:hover:text-zinc-50"
+                      <a
+                        href={downloads[DEFAULT_DOWNLOAD_KEY].url}
+                        target="_blank"
+                        rel="noopener"
+                        className="w-fit truncate text-left text-sm font-medium text-zinc-900 underline underline-offset-4 transition hover:text-zinc-700 dark:text-zinc-200 dark:hover:text-zinc-50"
                       >
                         {downloads[DEFAULT_DOWNLOAD_KEY].file}
-                      </button>
+                      </a>
                     ) : null}
                     {downloads[DEFAULT_DOWNLOAD_KEY]?.status === "error" ? (
                       <span className="text-sm text-red-500">
@@ -450,18 +415,14 @@ export default function Home() {
                                   : "下载"}
                               </button>
                               {downloadState.status === "success" ? (
-                                <button
-                                  type="button"
-                                  onClick={() => {
-                                    void triggerBrowserDownload(
-                                      downloadState.url,
-                                      downloadState.file
-                                    );
-                                  }}
+                                <a
+                                  href={downloadState.url}
+                                  target="_blank"
+                                  rel="noopener"
                                   className="truncate text-left text-xs font-medium text-zinc-900 underline underline-offset-4 transition hover:text-zinc-700 dark:text-zinc-200 dark:hover:text-zinc-50"
                                 >
                                   {downloadState.file}
-                                </button>
+                                </a>
                               ) : null}
                               {downloadState.status === "error" ? (
                                 <span className="text-xs text-red-500">