fix: 书库阅读页/帖子详情页/SiteDocMasthead/TOC 等前端细节修复

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

@@ -45,7 +45,7 @@ import AcceptedAnswerCard from "@/components/AcceptedAnswerCard";
 import { canModerateBoard } from "@/lib/roles";
 import { IconComment, IconEye } from "@/components/Icons";
 import { normalizePostType, postTypeLabel, contentAccessLabel, typeStatusLabel, typeStatusClass } from "@/lib/postMeta";
-import { extractToc, estimateReadingMinutes, markdownHeadingToc } from "@/lib/toc";
+import { extractToc, estimateReadingMinutes, formatReadingDuration, markdownHeadingToc } from "@/lib/toc";
 import { requestCanonical } from "@/lib/canonicalMeta";
 import { absoluteCanonical, canonicalPage } from "@/lib/siteUrl";
 import { postPath, userPath, type UrlStyle } from "@/lib/urlStyle";
@@ -450,7 +450,7 @@ export default async function PostDetailPage({ params, searchParams }: PageProps
             <p className="truncate text-[13px] font-bold leading-tight" style={{ color: "var(--ink)" }}>
               {post.title}
             </p>
-            <p className="meta mt-0.5 text-[10.5px] leading-tight">约 {readingMinutes} 分钟读完</p>
+            <p className="meta mt-0.5 text-[10.5px] leading-tight">约 {formatReadingDuration(readingMinutes)} 读完</p>
           </>
         }
         left={leftRailNode ? { label: "导航", content: leftRailNode } : undefined}
@@ -599,8 +599,8 @@ export default async function PostDetailPage({ params, searchParams }: PageProps
                         <IconComment size={14} /> {post.comment_count} 评论
                       </span>
                     ) : null}
-                    <span className="inline-flex items-center gap-1.5" aria-label={`阅读约需 ${readingMinutes} 分钟`}>
-                      <Clock size={14} /> 约 {readingMinutes} 分钟读完
+                    <span className="inline-flex items-center gap-1.5" aria-label={`阅读约需 ${formatReadingDuration(readingMinutes)}`}>
+                      <Clock size={14} /> 约 {formatReadingDuration(readingMinutes)} 读完
                     </span>
                   </div>
                   <p className="meta w-full text-[12px] sm:w-auto sm:ml-auto">