v1.4.5: 게시물 작성자·편집 링크·목록 요약 보정

- posts.author_id 마이그레이션 및 owner/admin 단일 계정 환경에서만 기존 글 backfill
- 공개 상세: 글쓴이 본인일 때만 공유 옆 수정 링크 표시, 수정 시각 제거
- 목록 요약: excerpt 없을 때 본문 fallback, post-summary-clamp로 말줄임 처리
- 회원 세션 API에 isAdmin·role 추가

pages/index.vue

@@ -88,14 +88,10 @@ const getPostFeedArticleClass = (style) => {
  */
 const getPostFeedExcerptClass = (style) => {
   if (style === 'list') {
-    return 'line-clamp-3'
+    return 'post-summary-clamp post-summary-clamp--three'
   }
 
-  if (style === 'compact') {
-    return 'line-clamp-1'
-  }
-
-  return 'line-clamp-2'
+  return 'post-summary-clamp post-summary-clamp--two'
 }
 
 const closePostFeedStyleMenu = () => {
@@ -152,7 +148,10 @@ const mapLatestPost = (post) => {
 
   return {
     title: post.title,
-    excerpt: post.excerpt,
+    excerpt: createPostSummary(post.excerpt, post.content, {
+      maxLength: 320,
+      appendEllipsis: false
+    }),
     featuredImage: post.featuredImage,
     tagName: tagMeta.name,
     tagColor: tagMeta.color,
@@ -479,7 +478,7 @@ const scrollFeatured = (direction) => {
                 class="post-feed__content relative min-w-0"
                 :class="isPostFeedCards ? 'flex flex-col' : 'flex flex-[3] flex-col gap-1.5 md:flex-[4]'"
               >
-                <div class="post-feed__content-inner flex min-h-0 flex-1 flex-col gap-1.5">
+                <div class="post-feed__content-inner flex min-h-0 flex-1 flex-col gap-1">
                   <h2 class="max-w-[90%] text-sm font-medium leading-tight">
                     <NuxtLink :to="post.to" class="flex items-center transition-opacity duration-200 hover:opacity-75">
                       <span v-if="post.isFeatured" class="post-feed__featured-icon mr-1 inline-flex h-4 w-4 items-center justify-center text-[var(--site-accent)]">
@@ -492,6 +491,7 @@ const scrollFeatured = (direction) => {
                   </h2>
 
                   <p
+                    v-if="post.excerpt"
                     class="flex-1 text-[0.8rem] leading-tight site-muted text-[#6E6661]"
                     :class="getPostFeedExcerptClass(postFeedStyle)"
                   >