fix:coderabbit 수정 사항

Author: neibler

src/main/java/com/ongil/backend/domain/brand/repository/BrandRepository.java

@@ -14,7 +14,7 @@ public interface BrandRepository extends JpaRepository<Brand, Long> {
 	List<Brand> findAllOrderByName();
 
 	@Query(value = "SELECT b.* FROM brands b " +
-		"WHERE EXISTS (SELECT 1 FROM products p WHERE p.brand_id = b.id AND p.on_sale = true) " +
+		"WHERE EXISTS (SELECT 1 FROM products p WHERE p.brand_id = b.id AND p.on_sale = true AND p.product_type <> 'SPECIAL_SALE') " +
 		"ORDER BY RAND() LIMIT 3", nativeQuery = true)
 	List<Brand> findRandomBrands();
 }

src/main/java/com/ongil/backend/domain/category/service/CategoryService.java

@@ -2,7 +2,9 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 import org.springframework.stereotype.Service;
@@ -46,11 +48,13 @@ public List<CategoryResponse> getAllCategories() {
 
 		// Cache Miss → DB 조회
 		List<Category> parentCategories = categoryRepository.findAllParentCategoriesWithSub();
+		Set<Long> activeCategoryIds = new HashSet<>(productRepository.findCategoryIdsWithOnSaleProducts());
+
 		List<CategoryResponse> response = parentCategories.stream()
 			.map(parent -> {
-				// 상품이 있는 하위 카테고리만 필터링
+				// 판매 중인 상품이 있는 하위 카테고리만 필터링
 				List<SubCategoryResponse> filteredSubs = parent.getSubCategories().stream()
-					.filter(sub -> productRepository.existsByCategoryIdAndOnSaleTrue(sub.getId()))
+					.filter(sub -> activeCategoryIds.contains(sub.getId()))
 					.map(categoryConverter::toSubCategoryResponse)
 					.collect(Collectors.toList());
 
@@ -100,9 +104,10 @@ public List<CategoryRandomResponse> getRandomCategories(int count) {
 	// 추천 하위 카테고리 조회 (상품이 있는 하위 카테고리만)
 	public List<CategorySimpleResponse> getRecommendedSubCategories(int count) {
 		List<Category> subCategories = categoryRepository.findAllSubCategories();
+		Set<Long> activeCategoryIds = new HashSet<>(productRepository.findCategoryIdsWithOnSaleProducts());
 
 		return subCategories.stream()
-			.filter(category -> productRepository.existsByCategoryIdAndOnSaleTrue(category.getId()))
+			.filter(category -> activeCategoryIds.contains(category.getId()))
 			.limit(count)
 			.map(categoryConverter::toSimpleResponse)
 			.collect(Collectors.toList());

src/main/java/com/ongil/backend/domain/product/repository/ProductRepository.java

@@ -238,6 +238,7 @@ List<Product> findRecommendedProducts(
 	// 특정 카테고리를 사용하는 상품이 있는지 확인
 	boolean existsByCategoryId(Long categoryId);
 
-	// 특정 카테고리에 판매 중인 상품이 있는지 확인
-	boolean existsByCategoryIdAndOnSaleTrue(Long categoryId);
+	// 판매 중인 상품이 존재하는 카테고리 ID 목록 일괄 조회
+	@Query("SELECT DISTINCT p.category.id FROM Product p WHERE p.onSale = true")
+	List<Long> findCategoryIdsWithOnSaleProducts();
 }