Merge pull request '납품 폴더 조회 api 추가' (#168) from feat/training_260324 into develop

Reviewed-on: #168

src/main/java/com/kamco/cd/training/dataset/service/DatasetService.java

@@ -525,12 +525,13 @@ public class DatasetService {
 
     // 존재 + 디렉토리 체크
     if (!dir.exists() || !dir.isDirectory()) {
-      throw new RuntimeException("Invalid path");
+      throw new CustomApiException("BAD_REQUEST", HttpStatus.BAD_REQUEST, "잘못된 경로입니다.");
     }
 
     // 권한 없을때
     if (!dir.canRead()) {
-      throw new RuntimeException("Permission denied");
+      throw new CustomApiException(
+          ApiResponseCode.FORBIDDEN.getId(), HttpStatus.FORBIDDEN, "디렉토리에 접근할 권한이 없습니다.");
     }
 
     String canonicalPath = dir.getCanonicalPath();