Fix: 독서기록 응답의 updatedAt을 Memo의 updatedAt이 아닌 createdAt으로 수정

Author: dainnida

src/main/java/com/cmc/mercury/domain/memo/repository/MemoRepository.java

@@ -13,7 +13,7 @@
 @Repository
 public interface MemoRepository extends JpaRepository<Memo, Long> {
 
-    // RecordDetail의 모든 Memo들을 찾아서 생성순으로 정렬 후 최상단 반환
+    // RecordDetail의 모든 Memo들을 찾아서 생성 순으로 정렬 후 최상단 반환
     Optional<Memo> findTopByRecordDetailOrderByCreatedAtDesc(RecordDetail recordDetail);
 
     // RecordDetail의 모든 Memo들을 찾아서 생성 순으로 정렬 후 반환

src/main/java/com/cmc/mercury/domain/record/dto/RecordDetailResponse.java

@@ -32,7 +32,7 @@ public static RecordDetailResponse of(Record record, RecordDetail recordDetail,
                         recordDetail.getUpdatedGauge(),
                         BookResponse.from(record.getBook()),
                         record.getCreatedAt(),
-                        latestMemo != null ? latestMemo.getUpdatedAt() : record.getUpdatedAt(),
+                        latestMemo != null ? latestMemo.getCreatedAt() : record.getUpdatedAt(),
                         memos
                 );
         }

src/main/java/com/cmc/mercury/domain/record/dto/RecordResponse.java

@@ -34,7 +34,7 @@ public static RecordResponse of(Record record, RecordDetail recordDetail, Memo m
                         recordDetail.getUpdatedGauge(),
                         content,
                         record.getCreatedAt(),
-                        memo != null ? memo.getUpdatedAt() : record.getUpdatedAt(),
+                        memo != null ? memo.getCreatedAt() : record.getUpdatedAt(),
                         BookResponse.from(record.getBook()),
                         record.getAcquiredExp()
                 );