侧栏「最近更新」：短文显示正文摘录（贴链接的回退到卡片标题、纯图显示占位）+ 配图短文带 34px 缩略图

frontend/src/components/RightRail.vue

@@ -3,7 +3,7 @@ import { computed, onMounted, ref } from 'vue'
 import { publicApi } from '../api'
 import { site } from '../site'
 import { socialIcon } from '../socialIcons'
-import { relativeDate } from '../utils'
+import { relativeDate, stripTags, thumbURL } from '../utils'
 
 // vivid 是单栏布局，右栏整体不渲染（省掉 latest/tags 两次请求）。
 const isVivid = computed(() => site.ui_id === 'vivid')
@@ -27,6 +27,26 @@ const links = [
 const latest = ref([])
 const tags = ref([])
 
+// 短文没有标题，侧栏拿正文开头当标识（flomo/Twitter 的做法），
+// 纯图片短文显示占位；有配图时右侧带一张小缩略图。
+const EXCERPT_LEN = 22
+function excerpt(p) {
+  if (p.kind !== 'short') return p.title || '无题'
+  // 先剥 <a>：贴链接的短文开头是 URL 本身，摘出来没有信息量；
+  // 剥完没字了（纯链接贴）就退到链接卡片的标题
+  const noLinks = (p.content_html || '').replace(/<a\b[^>]*>[\s\S]*?<\/a>/gi, ' ')
+  const text = stripTags(noLinks).replace(/\s+/g, ' ').trim()
+  if (text) return text.length > EXCERPT_LEN ? text.slice(0, EXCERPT_LEN) + '…' : text
+  if (p.link_card && p.link_card.title) {
+    const t = p.link_card.title
+    return t.length > EXCERPT_LEN ? t.slice(0, EXCERPT_LEN) + '…' : t
+  }
+  return p.images && p.images.length ? '📷 图片' : '短文'
+}
+function thumbOf(p) {
+  return p.kind === 'short' && p.images && p.images.length ? thumbURL(p.images[0], 160) : ''
+}
+
 onMounted(async () => {
   if (isVivid.value) return
   try {
@@ -52,12 +72,22 @@ onMounted(async () => {
       <p class="eyebrow">最近更新</p>
       <ul class="list">
         <li v-for="p in latest" :key="p.id">
-          <RouterLink :to="`/post/${p.slug}`" class="row">
-            <span class="title">
-              {{ p.kind === 'short' ? '短文' : p.title || '无题' }}
-              <span v-if="p.kind === 'short'" class="badge">短</span>
+          <RouterLink :to="`/post/${p.slug}`" class="row" :class="{ withThumb: thumbOf(p) }">
+            <span class="row-main">
+              <span class="title">
+                {{ excerpt(p) }}
+                <span v-if="p.kind === 'short'" class="badge">短</span>
+              </span>
+              <span class="date">{{ relativeDate(p.published_at) }}</span>
             </span>
-            <span class="date">{{ relativeDate(p.published_at) }}</span>
+            <img
+              v-if="thumbOf(p)"
+              class="thumb"
+              :src="thumbOf(p)"
+              alt=""
+              loading="lazy"
+              decoding="async"
+            />
           </RouterLink>
         </li>
       </ul>
@@ -152,7 +182,9 @@ onMounted(async () => {
 }
 
 .row {
-  display: block;
+  display: flex;
+  align-items: center;
+  gap: 10px;
   padding: 7px 0;
   border-bottom: 1px dashed var(--line-soft);
 }
@@ -161,10 +193,27 @@ onMounted(async () => {
   border-bottom: 0;
 }
 
+/* 文字列吃满剩余宽度，缩略图固定在右 */
+.row-main {
+  flex: 1;
+  min-width: 0;
+}
+
 .title {
   display: block;
   font-size: 14px;
   line-height: 1.7;
+  overflow-wrap: anywhere;
+}
+
+.thumb {
+  flex: 0 0 auto;
+  width: 34px;
+  height: 34px;
+  object-fit: cover;
+  border-radius: 6px;
+  background: var(--card);
+  border: 1px solid var(--line-soft);
 }
 
 .badge {