chore(spec): 归档 fix-site-polish——四缺陷+双轨验证六任务收敛

Spec: 2026-10-25_fix-site-polish

Co-authored-by: GLM-5.3

src/pages/en/index.astro

@@ -12,6 +12,10 @@ import { t } from '../../i18n/ui';
 const posts = (await getCollection('posts', ({ data }) => !data.draft)).sort(
   (a, b) => b.data.pubDate.getTime() - a.data.pubDate.getTime(),
 );
+// 列表标题吃 postsEn 译题（缺译回退 zh，与 /en/archives 同策略）
+const enTitle = Object.fromEntries(
+  (await getCollection('postsEn')).map((e) => [e.id, e.data.title]),
+);
 const photos = (await getCollection('photos')).slice(0, 4);
 ---
 
@@ -65,7 +69,7 @@ const photos = (await getCollection('photos')).slice(0, 4);
     </div>
   </IdCard>
 
-  <PostList {posts} locale="en" />
+  <PostList {posts} locale="en" titleOverrides={enTitle} />
 
   <section class="latest" aria-label={t('latest_photos', 'en')}>
     <div class="latest-head">