Fix TypeScript build errors by removing unused imports

- Remove unused icon imports from DashboardLayout
- Fix build process for Cloudflare Pages deployment

🤖 Generated with [Claude Code](https://claude.ai/code)

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

src/components/layout/DashboardLayout.tsx

@@ -24,10 +24,6 @@ import {
 } from '@mui/material';
 import {
   Menu as MenuIcon,
-  People,
-  QrCode,
-  PersonAdd,
-  CloudDownload,
   Settings,
   Logout,
   NotificationsNone,
@@ -39,9 +35,6 @@ import {
   ExpandLess,
   ExpandMore,
   Hub,
-  List as ListIcon,
-  AccountTree,
-  Map,
 } from '@mui/icons-material';
 import BottomNavigation from '../navigation/BottomNavigation';