fix(frontend): 移除易被误认为加载条的顶部阅读进度条

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/app/post/[id]/page.tsx

@@ -27,7 +27,6 @@ import { getMeCached } from "@/lib/serverData";
 import CommentSection from "@/components/CommentSection";
 import PostActions from "@/components/PostActions";
 import LikeButton from "@/components/LikeButton";
-import ReadingProgress from "@/components/ReadingProgress";
 import PostToc, { type TocItem } from "@/components/PostToc";
 import MobilePostBar from "@/components/MobilePostBar";
 import Avatar from "@/components/Avatar";
@@ -454,7 +453,6 @@ export default async function PostDetailPage({ params, searchParams }: PageProps
 
   return (
     <>
-      <ReadingProgress />
       <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }} />
       {/* 移动端浮动操作条：长文阅读中途可点赞 / 跳评论 / 回顶部 */}
       <MobilePostBar postId={id} liked={post.liked} likeCount={post.like_count} />