反爬虫优化，评论图片支持

app/tasks/page.tsx

@@ -147,9 +147,10 @@ export default function TasksPage() {
 
   const extractedCount = useMemo(() => extractDouyinLinks(input).length, [input]);
 
-  const formatDuration = (t?: number) => {
-    if (!t) return "";
-    const secs = Math.max(0, Math.round((Date.now() - t) / 1000));
+  const formatDuration = (startTime?: number, endTime?: number) => {
+    if (!startTime) return "";
+    const end = endTime || Date.now();
+    const secs = Math.max(0, Math.round((end - startTime) / 1000));
     if (secs < 60) return `${secs}s`;
     const m = Math.floor(secs / 60);
     const s = secs % 60;
@@ -228,7 +229,7 @@ export default function TasksPage() {
                           <span className="text-xs text-neutral-400">已耗时 {formatDuration(t.startedAt)}</span>
                         )}
                         {t.status === 'success' && (
-                          <span className="text-xs text-neutral-400">用时 {t.startedAt ? formatDuration(t.startedAt) : '--'}</span>
+                          <span className="text-xs text-neutral-400">用时 {formatDuration(t.startedAt, t.finishedAt)}</span>
                         )}
                       </div>
                       <div className="mt-1 flex items-center gap-2 text-sm text-neutral-200">