fix(monthly-comparison): 버튼 깜빡임 제거 + 뱃지 색상 구별

- bottomActions: HTML에서 기본 hidden (JS 로드 전 깜빡임 방지)
- 검토완료: 초록 배경, 확인완료: 진한 초록, 확인요청: 파랑, 수정요청: 주황

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

system1-factory/web/pages/attendance/monthly-comparison.html

@@ -73,7 +73,7 @@
               <div class="ds-skeleton"></div>
             </div>
 
-            <div class="mc-bottom-actions" id="bottomActions">
+            <div class="mc-bottom-actions hidden" id="bottomActions">
               <button type="button" class="mc-confirm-btn" id="confirmBtn" onclick="confirmMonth()">
                 <i class="fas fa-check-circle mr-2"></i>확인 완료
               </button>
@@ -164,7 +164,7 @@
 
     <script src="/static/js/tkfb-core.js?v=2026033108"></script>
     <script src="/js/api-base.js?v=2026031701"></script>
-    <script src="/js/monthly-comparison.js?v=2026040105"></script>
+    <script src="/js/monthly-comparison.js?v=2026040106"></script>
     <script>initAuth();</script>
 </body>
 </html>