♻️Refactor: 알림 응답 dto에 동호회, 수신자 정보 추가

Author: imjuyongp

src/main/java/com/be/sportizebe/domain/notification/dto/response/NotificationResponse.java

@@ -11,20 +11,23 @@
 public record NotificationResponse(
     @Schema(description = "알림 ID") Long id,
     @Schema(description = "알림 타입") Notification.NotificationType type,
-    @Schema(description = "알림 메시지") String message,
     @Schema(description = "읽음 여부") Boolean isRead,
     @Schema(description = "관련 가입 신청 ID") Long joinRequestId,
+    @Schema(description = "동호회 이름") String clubName,
+    @Schema(description = "신청자 닉네임") String applicantNickname,
     @Schema(description = "관련 대상 ID (댓글, 채팅 등)") Long targetId,
     @Schema(description = "알림 생성 일시") LocalDateTime createdAt
 ) {
   public static NotificationResponse from(Notification notification) {
+    var joinRequest = notification.getJoinClubRequest();
+
     return NotificationResponse.builder()
         .id(notification.getId())
         .type(notification.getType())
-        .message(notification.getMessage())
         .isRead(notification.getIsRead())
-        .joinRequestId(notification.getJoinClubRequest() != null
-            ? notification.getJoinClubRequest().getId() : null)
+        .joinRequestId(joinRequest != null ? joinRequest.getId() : null)
+        .clubName(joinRequest != null ? joinRequest.getClub().getName() : null)
+        .applicantNickname(joinRequest != null ? joinRequest.getUser().getNickname() : null)
         .targetId(notification.getTargetId())
         .createdAt(notification.getCreatedAt())
         .build();