feat: 어드민 스터디 삭제 V2 API 구현 (#885)

feat: 어드민 스터디 삭제 v2 api 구현

src/main/java/com/gdschongik/gdsc/domain/studyv2/api/AdminStudyControllerV2.java

@@ -9,7 +9,9 @@
 import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -36,4 +38,11 @@ public ResponseEntity<List<StudyManagerResponse>> getStudies() {
         var response = adminStudyServiceV2.getAllStudies();
         return ResponseEntity.ok(response);
     }
+
+    @Operation(summary = "스터디 삭제", description = "스터디를 삭제합니다. 스터디의 세션도 함께 삭제됩니다.")
+    @DeleteMapping("/{studyId}")
+    public ResponseEntity<Void> deleteStudy(@PathVariable Long studyId) {
+        adminStudyServiceV2.deleteStudy(studyId);
+        return ResponseEntity.ok().build();
+    }
 }

src/main/java/com/gdschongik/gdsc/domain/studyv2/application/AdminStudyServiceV2.java

@@ -53,7 +53,7 @@ public void createStudy(StudyCreateRequest request) {
         memberRepository.save(mentor);
         studyV2Repository.save(study);
 
-        log.info("[AdminStudyService] 스터디 생성 완료: studyId = {}", study.getId());
+        log.info("[AdminStudyServiceV2] 스터디 생성 완료: studyId = {}", study.getId());
     }
 
     @Transactional(readOnly = true)
@@ -62,4 +62,11 @@ public List<StudyManagerResponse> getAllStudies() {
                 .map(StudyManagerResponse::from)
                 .toList();
     }
+
+    @Transactional
+    public void deleteStudy(Long studyId) {
+        studyV2Repository.deleteById(studyId);
+
+        log.info("[AdminStudyServiceV2] 스터디 삭제 완료: studyId = {}", studyId);
+    }
 }