feat: 유저 찜목록 반환

src/main/java/com/idol/domains/wish/controller/WishQueryController.java

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+package com.idol.domains.wish.controller;
+
+import com.idol.domains.auth.util.annotation.MemberId;
+import com.idol.domains.wish.dto.request.WishLikeRequestDto;
+import com.idol.domains.wish.usecase.GetWishListByMemberIdUsecase;
+import com.idol.domains.wish.usecase.WishUnlikeUsecase;
+import com.idol.domains.wish.usecase.WishlikeUsecase;
+import com.idol.global.common.response.ApiResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@Tag(name = "찜 Query API", description = "찜 조회 API")
+@RequiredArgsConstructor
+@RestController
+@RequestMapping("/api")
+public class WishQueryController {
+
+    private final GetWishListByMemberIdUsecase getWishListByMemberIdUsecase;
+
+    @Operation(summary = "찜 목록 조회", description = "회원의 찜한 게시물 ID 목록을 조회합니다.")
+    @GetMapping("/wishlist")
+    public ApiResponse<List<Long>> getWishList(
+            @MemberId Long memberId
+    ) {
+        List<Long> articleIds = getWishListByMemberIdUsecase.findArticleIdsByMemberId(memberId);
+        return ApiResponse.ok(200, articleIds, "찜 목록 조회 성공");
+    }
+}

src/main/java/com/idol/domains/wish/service/GetWishListByMemberIdService.java

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+package com.idol.domains.wish.service;
+
+import com.idol.domains.wish.repository.WishRepository;
+import com.idol.domains.wish.usecase.GetWishListByMemberIdUsecase;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@RequiredArgsConstructor
+@Service
+@Transactional(readOnly = true)
+public class GetWishListByMemberIdService implements GetWishListByMemberIdUsecase {
+
+    private final WishRepository wishRepository;
+
+    @Override
+    public List<Long> findArticleIdsByMemberId(Long memberId) {
+        return wishRepository.findArticleIdsByMemberId(memberId);
+    }
+}

src/main/java/com/idol/domains/wish/usecase/GetWishListByMemberIdUsecase.java

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+package com.idol.domains.wish.usecase;
+
+import java.util.List;
+
+public interface GetWishListByMemberIdUsecase {
+    List<Long> findArticleIdsByMemberId(Long memberId);
+}