refactor: 전체 페이지 이모지 제거 및 사이드바 레이아웃 수정

- 모든 페이지에서 이모지 제거 (CODING_GUIDE 준수)
  - admin/ (9개), safety/ (7개), work/ (4개)
  - attendance/ (8개), profile/ (2개)
- 사이드바 CSS에 누락된 컨테이너 클래스 추가
  - work-report-container, analysis-container, dashboard-main
  - 사이드바 토글 시 메인 콘텐츠 정상 반응하도록 수정

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

web-ui/pages/safety/checklist-manage.html

@@ -408,14 +408,14 @@
       gap: 0.5rem;
     }
 
-    .weather-icon.rain::before { content: '🌧️'; }
-    .weather-icon.snow::before { content: '❄️'; }
-    .weather-icon.heat::before { content: '🔥'; }
-    .weather-icon.cold::before { content: '🥶'; }
-    .weather-icon.wind::before { content: '💨'; }
-    .weather-icon.fog::before { content: '🌫️'; }
-    .weather-icon.dust::before { content: '😷'; }
-    .weather-icon.clear::before { content: '☀️'; }
+    .weather-icon.rain::before { content: '[rain]'; }
+    .weather-icon.snow::before { content: '[snow]'; }
+    .weather-icon.heat::before { content: '[heat]'; }
+    .weather-icon.cold::before { content: '[cold]'; }
+    .weather-icon.wind::before { content: '[wind]'; }
+    .weather-icon.fog::before { content: '[fog]'; }
+    .weather-icon.dust::before { content: '[dust]'; }
+    .weather-icon.clear::before { content: '[clear]'; }
 
     @media (max-width: 768px) {
       .checklist-item {
@@ -591,6 +591,7 @@
   <script type="module" src="/js/api-config.js"></script>
   <script src="/js/auth-check.js" defer></script>
   <script type="module" src="/js/load-navbar.js"></script>
+  <script type="module" src="/js/load-sidebar.js"></script>
   <script type="module" src="/js/safety-checklist-manage.js"></script>
 </body>
 </html>