feat: Wishlist 요청/응답 DTO 추가

Author: MEOHIN

src/main/java/com/back/domain/wishlist/dto/WishlistRequestDto.java

@@ -0,0 +1,22 @@
+package com.back.domain.wishlist.dto;
+
+import com.back.domain.wishlist.enums.WishlistStatus;
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class WishlistRequestDto {
+
+    @NotNull
+    private Long userId;
+
+    // 생성 시 기본값 ACTIVE, 필요시 상태 지정 업데이트용으로 재사용 가능
+    private WishlistStatus status;
+}
+

src/main/java/com/back/domain/wishlist/dto/WishlistResponseDto.java

@@ -0,0 +1,32 @@
+package com.back.domain.wishlist.dto;
+
+import com.back.domain.wishlist.entity.Wishlist;
+import com.back.domain.wishlist.enums.WishlistStatus;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class WishlistResponseDto {
+    private Long id;
+    private Long userId;
+    private WishlistStatus status;
+    private LocalDateTime createdAt;
+
+    public static WishlistResponseDto from(Wishlist wishlist) {
+        if (wishlist == null) return null;
+        return WishlistResponseDto.builder()
+                .id(wishlist.getId())
+                .userId(wishlist.getUser() != null ? wishlist.getUser().getId() : null)
+                .status(wishlist.getStatus())
+                .createdAt(wishlist.getCreatedAt())
+                .build();
+    }
+}
+