feat(public): profile home bio shows front matter desc only when set

Made-with: Cursor

app/pages/@[publicSlug]/index.vue

@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { unwrapApiBody, type ApiResponse } from '../../utils/http/factory'
+import { extractFrontMatterDesc, stripFrontMatter } from '../../utils/markdown-front-matter'
 import { renderSafeMarkdown } from '../../utils/render-markdown'
 import {
   formatOccurredOnDisplay,
@@ -123,9 +124,27 @@ function timelineItemKey(e: PublicTimelineItem, i: number): string | number {
   return e.id ?? i
 }
 
-const bioHtml = computed(() =>
-  data.value?.bio?.markdown ? renderSafeMarkdown(data.value.bio.markdown) : '',
-)
+/** 主页生平：有 front matter 的 desc 时只展示 desc；否则展示全文（兼容无 FM 的简介） */
+const bioHtml = computed(() => {
+  const md = data.value?.bio?.markdown
+  if (!md?.trim()) {
+    return ''
+  }
+  const desc = extractFrontMatterDesc(md)
+  if (desc) {
+    return renderSafeMarkdown(desc)
+  }
+  return renderSafeMarkdown(md)
+})
+
+/** 「查看全文」：正文在去掉 FM 后仍有内容时才显示（避免仅有 desc 时链到空页） */
+const showBioReadMore = computed(() => {
+  const md = data.value?.bio?.markdown
+  if (!md?.trim()) {
+    return false
+  }
+  return stripFrontMatter(md).trim().length > 0
+})
 </script>
 
 <template>
@@ -154,12 +173,12 @@ const bioHtml = computed(() =>
       </h1>
     </div>
 
-    <div v-if="data.bio?.markdown" class="space-y-3">
+    <div v-if="data.bio?.markdown && bioHtml" class="space-y-3">
       <div
         class="prose prose-neutral dark:prose-invert max-w-none prose-img:rounded-lg"
         v-html="bioHtml"
       />
-      <div class="not-prose">
+      <div v-if="showBioReadMore" class="not-prose">
         <NuxtLink
           :to="`/@${slug}/about`"
           class="text-sm font-medium text-primary hover:underline"
@@ -351,12 +370,13 @@ const bioHtml = computed(() =>
             <h1 class="text-center text-lg font-semibold text-highlighted lg:text-left lg:text-base">
               {{ data.user.nickname || data.user.publicSlug || slug }}
             </h1>
-            <div v-if="data.bio?.markdown" class="space-y-2">
+            <div v-if="data.bio?.markdown && bioHtml" class="space-y-2">
               <div
                 class="bio-preview-scroll max-h-36 overflow-y-auto rounded-lg border border-default bg-elevated/30 p-3 text-xs leading-relaxed text-muted prose prose-neutral dark:prose-invert max-w-none prose-p:my-1 prose-img:rounded"
                 v-html="bioHtml"
               />
               <NuxtLink
+                v-if="showBioReadMore"
                 :to="`/@${slug}/about`"
                 class="text-xs font-medium text-primary hover:underline"
               >