feat(community): 채널 커뮤니티 좋아요 조회를 추가한다

src/main/kotlin/kr/co/vividnext/sodalive/v2/creator/channel/community/adapter/out/persistence/DefaultCreatorChannelCommunityQueryRepository.kt

@@ -186,6 +186,7 @@ class DefaultCreatorChannelCommunityQueryRepository(
         val postIds = map { it.postId }
         val orderedPostIds = orderedCommunityPostIds(creatorId, viewerId, postIds)
         val likeCounts = communityLikeCounts(postIds)
+        val likedPostIds = likedCommunityPostIds(viewerId, postIds)
         val commentAvailablePostIds = filter { it.isCommentAvailable }.map { it.postId }
         val commentCounts = communityCommentCounts(commentAvailablePostIds, creatorId, viewerId)
 
@@ -206,7 +207,8 @@ class DefaultCreatorChannelCommunityQueryRepository(
                 isCommentAvailable = row.isCommentAvailable,
                 likeCount = likeCounts[postId] ?: 0,
                 commentCount = commentCounts[postId] ?: 0,
-                isPinned = isPinned
+                isPinned = isPinned,
+                isLiked = postId in likedPostIds
             )
         }
     }
@@ -233,6 +235,22 @@ class DefaultCreatorChannelCommunityQueryRepository(
             .toSet()
     }
 
+    private fun likedCommunityPostIds(viewerId: Long, postIds: List<Long>): Set<Long> {
+        if (postIds.isEmpty()) return emptySet()
+
+        return queryFactory
+            .select(creatorCommunityLike.creatorCommunity.id)
+            .distinct()
+            .from(creatorCommunityLike)
+            .where(
+                creatorCommunityLike.member.id.eq(viewerId),
+                creatorCommunityLike.creatorCommunity.id.`in`(postIds),
+                creatorCommunityLike.isActive.isTrue
+            )
+            .fetch()
+            .toSet()
+    }
+
     private fun communityLikeCounts(postIds: List<Long>): Map<Long, Int> {
         if (postIds.isEmpty()) return emptyMap()