댓글 카드 디자인 개선

backend/src/db.js

@@ -268,8 +268,10 @@ function mapCommentNotificationRow(row) {
     topicSlug: row.topic_slug || row.topic_id,
     topicName: row.topic_name || '',
     tierListTitle: row.tierlist_title || '',
+    tierListThumbnailSrc: row.tierlist_thumbnail_src || '',
     commentId: row.comment_id,
     parentCommentId: row.parent_comment_id || '',
+    parentCommentContent: row.parent_comment_content || '',
     notificationType: row.notification_type || 'tierlist_comment',
     isRead: !!row.is_read,
     readAt: Number(row.read_at || 0),
@@ -2843,15 +2845,18 @@ async function listCommentNotifications(userId, { unreadOnly = false } = {}) {
         n.actor_user_id,
         c.parent_comment_id,
         c.content AS comment_content,
+        parent.content AS parent_comment_content,
         t.topic_id,
         tp.slug AS topic_slug,
         tp.name AS topic_name,
         t.title AS tierlist_title,
+        t.thumbnail_src AS tierlist_thumbnail_src,
         actor.nickname AS actor_nickname,
         actor.email AS actor_email,
         actor.avatar_src AS actor_avatar_src
       FROM comment_notifications n
       INNER JOIN tierlist_comments c ON c.id = n.comment_id
+      LEFT JOIN tierlist_comments parent ON parent.id = c.parent_comment_id
       INNER JOIN tierlists t ON t.id = n.tierlist_id
       INNER JOIN topics tp ON tp.id = t.topic_id
       INNER JOIN users actor ON actor.id = n.actor_user_id