feat: implement advanced analytics for mobile admin dashboard

This commit includes:
- Backend EventAnalyticsService and Controller
- API endpoint for event analytics
- Frontend EventAnalyticsPage with custom bar charts and top contributor lists
- Analytics shortcut on the dashboard
- Feature-lock upsell UI for non-premium users

resources/js/admin/router.tsx

@@ -33,6 +33,7 @@ const MobileEventLiveShowSettingsPage = React.lazy(() => import('./mobile/EventL
 const MobileEventMembersPage = React.lazy(() => import('./mobile/EventMembersPage'));
 const MobileEventTasksPage = React.lazy(() => import('./mobile/EventTasksPage'));
 const MobileEventRecapPage = React.lazy(() => import('./mobile/EventRecapPage'));
+const MobileEventAnalyticsPage = React.lazy(() => import('./mobile/EventAnalyticsPage'));
 const MobileNotificationsPage = React.lazy(() => import('./mobile/NotificationsPage'));
 const MobileProfilePage = React.lazy(() => import('./mobile/ProfilePage'));
 const MobileBillingPage = React.lazy(() => import('./mobile/BillingPage'));
@@ -203,6 +204,7 @@ export const router = createBrowserRouter([
           { path: 'mobile/events/:slug/live-show', element: <RequireAdminAccess><MobileEventLiveShowQueuePage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/live-show/settings', element: <RequireAdminAccess><MobileEventLiveShowSettingsPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/recap', element: <RequireAdminAccess><MobileEventRecapPage /></RequireAdminAccess> },
+          { path: 'mobile/events/:slug/analytics', element: <RequireAdminAccess><MobileEventAnalyticsPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/members', element: <RequireAdminAccess><MobileEventMembersPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/tasks', element: <MobileEventTasksPage /> },
           { path: 'mobile/events/:slug/photobooth', element: <RequireAdminAccess><MobileEventPhotoboothPage /></RequireAdminAccess> },