Added sageOnLogin(dashboardUrl) function that checks if the SPA Router
has a route (via Router.current() or URL ?page= param) before loading
the dashboard. This prevents user_logined event from overwriting
Router-restored content on page refresh with deep links.
- Fix text jumping on right side when screen narrows (min-width:0 on flex item)
- Fix sidebar toggle button not working (retry icon init, proper state sync)
- Mobile adaptation: sidebar as overlay with slide animation
- Auto-collapse sidebar on mobile viewport (<=768px)
- Click outside sidebar to close on mobile
- Responsive padding for stat cards and main content
- Hide brand title on very small screens (<=480px)
- Smooth transitions for sidebar collapse/expand
- shell.ui: add id to menu urlwidget, binds for sage_login/sage_logout events
- shell_theme.js: add sageReloadMenu() to rebuild menu urlwidget
- global_menu.ui: complete with all 22 modules and role-based visibility