fix(dashboard): pages 테이블에 없는 icon 컬럼 참조 제거

getQuickAccess 쿼리에서 icon 컬럼 제거. 프론트엔드
PAGE_ICONS 상수로 아이콘 매핑하므로 DB 컬럼 불필요.

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

system1-factory/api/models/dashboardModel.js

@@ -69,8 +69,7 @@ const DashboardModel = {
 
     // 모든 페이지 조회
     const [allPages] = await db.execute(`
-      SELECT id, page_key, page_name, page_path, category, is_admin_only,
-             COALESCE(icon, '') AS icon
+      SELECT id, page_key, page_name, page_path, category, is_admin_only
       FROM pages
       ORDER BY display_order, page_name
     `);
@@ -142,7 +141,7 @@ function formatPage(page) {
     page_key: page.page_key,
     page_name: page.page_name,
     page_path: page.page_path,
-    icon: page.icon || '',
+    icon: '',
     category: page.category || ''
   };
 }