feat: enforce iOS AI safety policy and citations

health_app/lib/core/app_router.dart

@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'navigation_provider.dart';
@@ -120,9 +122,9 @@ Widget buildPage(RouteInfo route, WidgetRef ref) {
     case 'doctorFollowUpEdit':
       return DoctorFollowUpEditPage(id: params['id']);
     case 'devices':
-      return const DeviceManagementPage();
+      return Platform.isIOS ? const HomePage() : const DeviceManagementPage();
     case 'deviceScan':
-      return const DeviceScanPage();
+      return Platform.isIOS ? const HomePage() : const DeviceScanPage();
     case 'healthArchive':
       return const HealthArchivePage();
     case 'followups':