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/components/sidebar-nav.html

@@ -307,14 +307,20 @@
 /* 메인 콘텐츠 여백 */
 body.has-sidebar .dashboard-container,
 body.has-sidebar .main-content,
-body.has-sidebar .page-container {
+body.has-sidebar .page-container,
+body.has-sidebar .work-report-container,
+body.has-sidebar .analysis-container,
+body.has-sidebar > .dashboard-main {
   margin-left: 260px;
   transition: margin-left 0.3s ease;
 }
 
 body.has-sidebar.sidebar-collapsed .dashboard-container,
 body.has-sidebar.sidebar-collapsed .main-content,
-body.has-sidebar.sidebar-collapsed .page-container {
+body.has-sidebar.sidebar-collapsed .page-container,
+body.has-sidebar.sidebar-collapsed .work-report-container,
+body.has-sidebar.sidebar-collapsed .analysis-container,
+body.has-sidebar.sidebar-collapsed > .dashboard-main {
   margin-left: 60px;
 }
 
@@ -330,7 +336,10 @@ body.has-sidebar.sidebar-collapsed .page-container {
 
   body.has-sidebar .dashboard-container,
   body.has-sidebar .main-content,
-  body.has-sidebar .page-container {
+  body.has-sidebar .page-container,
+  body.has-sidebar .work-report-container,
+  body.has-sidebar .analysis-container,
+  body.has-sidebar > .dashboard-main {
     margin-left: 0;
   }
 }