Merge dfc859c (승인 요청 처리 개선) into design

- 승인정보 없는 요청 목록 노출 및 삭제 로직 (MyAppController, AppServiceFacade)
- '승인대기' → '승인정보 없음' 텍스트 (apiKeyList.html, design 뱃지 클래스 유지)
- 내부 결재 중 취소 불가 안내 스타일 (_apikey-detail.scss)
- 충돌 CSS는 design(ours) 채택 후 SASS 재컴파일

src/main/resources/static/css/main.css

@@ -17995,6 +17995,12 @@ input[type=checkbox]:checked + .custom-checkbox {
   font-size: 14px;
   margin: 0;
 }
+.detail-wrap .dt-cancel-notice {
+  margin: 10px 0 0;
+  text-align: center;
+  font-size: 14px;
+  color: #64748b;
+}
 .detail-wrap .dt-actions {
   display: flex;
   justify-content: center;

src/main/resources/static/sass/pages/_apikey-detail.scss

@@ -1232,6 +1232,14 @@
     margin: 0;
   }
 
+  // 내부 결재 진행중: 신청 취소 불가 안내
+  .dt-cancel-notice {
+    margin: 10px 0 0;
+    text-align: center;
+    font-size: 14px;
+    color: #64748b;
+  }
+
   // Footer Buttons layout
   .dt-actions {
     display: flex;

src/main/resources/templates/views/apps/mypage/apiKeyList.html

@@ -57,8 +57,8 @@
                     <!-- Status Badge -->
                     <span class="app-card-badge"
                       th:classappend="${request.approval != null and request.approval.approvalStatus != null and request.approval.approvalStatus.toString() == 'REQUESTED' ? 'badge-requested' : 'badge-pending'}"
-                      th:text="${request.approval != null and request.approval.approvalStatus != null ? request.approval.approvalStatus.description : '승인대기'}">
-                      승인대기
+                      th:text="${request.approval != null and request.approval.approvalStatus != null ? request.approval.approvalStatus.description : '승인정보 없음'}">
+                      승인정보 없음
                     </span>
                   </div>
                   <!-- App Description & Expected Completion Date -->

src/main/resources/templates/views/apps/mypage/appRequestDetail.html

@@ -54,6 +54,9 @@
                                         대기중
                                     </span>
                                 </div>
+                                <div class="dt-app-status-row" th:if="${appRequest.approval == null}">
+                                    <span class="dt-status-badge status-pending">승인정보 없음</span>
+                                </div>
                                 <h3 class="dt-app-name" th:text="${appRequest.clientName}">앱 이름</h3>
                                 <!-- App Description -->
                                 <p class="dt-app-desc"
@@ -200,12 +203,19 @@
 
                         </div>
 
+                        <!-- 내부 결재 진행중: 취소 불가 안내 -->
+                        <p class="dt-cancel-notice" sec:authorize="hasRole('ROLE_API_KEY_REQUEST')"
+                            th:if="${appRequest.approval != null and appRequest.approval.approvalStatus != null and
+                                    appRequest.approval.approvalStatus.toString() == 'PROCESSING'}">
+                            내부 결재가 진행 중이라 신청을 취소할 수 없습니다. 취소가 필요한 경우 관리자에게 문의해 주세요.
+                        </p>
+
                         <!-- Bottom Navigation Actions -->
                         <div class="dt-actions">
                             <!-- Cancel Request Button (danger red) -->
                             <button type="button" sec:authorize="hasRole('ROLE_API_KEY_REQUEST')" class="dt-btn-red"
-                                th:if="${appRequest.approval != null and appRequest.approval.approvalStatus != null and
-                                        (appRequest.approval.approvalStatus.toString() == 'PENDING' or appRequest.approval.approvalStatus.toString() == 'REQUESTED')}"
+                                th:if="${appRequest.approval == null or (appRequest.approval.approvalStatus != null and
+                                        (appRequest.approval.approvalStatus.toString() == 'PENDING' or appRequest.approval.approvalStatus.toString() == 'REQUESTED'))}"
                                 th:data-request-id="${appRequest.id}" onclick="cancelRequestById(this)">
                                 신청 취소
                             </button>

src/main/resources/templates/views/apps/mypage/credentialDetail.html

@@ -51,16 +51,6 @@
                         <!-- Credential Info Section Card -->
                         <div class="dt-info-container">
 
-                            <!-- 인증 방식 -->
-                            <div class="dt-row">
-                                <div class="dt-col">
-                                    <label class="dt-label">인증 방식</label>
-                                    <div class="dt-input-group">
-                                        <div class="dt-input-box" th:text="${authType}">OAuth2</div>
-                                    </div>
-                                </div>
-                            </div>
-
                             <!-- Client ID -->
                             <div class="dt-row">
                                 <div class="dt-col">