Se agrego el sdk para el pda de honeywell

lib/screens/home_screen.dart

@@ -3,9 +3,14 @@ import 'package:qrscanner/models/auth_session.dart';
 import 'package:qrscanner/screens/login_screen.dart';
 import 'package:qrscanner/screens/scanner_screen.dart';
 import 'package:qrscanner/services/auth_service.dart';
+import 'package:qrscanner/services/hardware_scanner_service.dart';
+import 'package:qrscanner/services/scan_launch_service.dart';
 import 'package:qrscanner/theme/app_theme.dart';
 
-class HomeScreen extends StatelessWidget {
+final RouteObserver<ModalRoute<void>> homeRouteObserver =
+    RouteObserver<ModalRoute<void>>();
+
+class HomeScreen extends StatefulWidget {
   const HomeScreen({
     super.key,
     required this.session,
@@ -13,7 +18,29 @@ class HomeScreen extends StatelessWidget {
 
   final AuthSession session;
 
+  @override
+  State<HomeScreen> createState() => _HomeScreenState();
+}
+
+class _HomeScreenState extends State<HomeScreen> {
+  bool _hardwareAvailable = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _checkHardware();
+  }
+
+  Future<void> _checkHardware() async {
+    final available = await ScanLaunchService.instance.isSupported();
+    if (mounted) {
+      setState(() => _hardwareAvailable = available);
+    }
+  }
+
   Future<void> _logout(BuildContext context) async {
+    await HardwareScannerService.instance.ensureStopped();
+    await ScanLaunchService.instance.releaseScanner();
     await AuthService().clearSession();
 
     if (!context.mounted) return;
@@ -30,11 +57,12 @@ class HomeScreen extends StatelessWidget {
     );
   }
 
-  void _openScanner(BuildContext context) {
-    Navigator.of(context).push(
+  Future<void> _openScanner(BuildContext context) async {
+    await Navigator.of(context).push(
       PageRouteBuilder<void>(
+        settings: const RouteSettings(name: '/scanner'),
         pageBuilder: (context, animation, secondaryAnimation) =>
-            ScannerScreen(session: session),
+            ScannerScreen(session: widget.session),
         transitionsBuilder: (context, animation, secondaryAnimation, child) {
           return FadeTransition(
             opacity: animation,
@@ -57,7 +85,7 @@ class HomeScreen extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final expiresHours = (session.expiresIn / 3600).round();
+    final expiresHours = (widget.session.expiresIn / 3600).round();
 
     return Scaffold(
       body: Stack(
@@ -140,7 +168,7 @@ class HomeScreen extends StatelessWidget {
                         ),
                         const SizedBox(height: 28),
                         Text(
-                          'Hola, ${session.username}',
+                          'Hola, ${widget.session.username}',
                           style:
                               Theme.of(context).textTheme.headlineSmall?.copyWith(
                                     fontWeight: FontWeight.bold,
@@ -175,6 +203,40 @@ class HomeScreen extends StatelessWidget {
                             ),
                           ),
                         ),
+                        if (_hardwareAvailable) ...[
+                          const SizedBox(height: 16),
+                          Container(
+                            padding: const EdgeInsets.symmetric(
+                              horizontal: 14,
+                              vertical: 8,
+                            ),
+                            decoration: BoxDecoration(
+                              color: AppTheme.primary.withValues(alpha: 0.12),
+                              borderRadius: BorderRadius.circular(20),
+                              border: Border.all(
+                                color: AppTheme.primary.withValues(alpha: 0.25),
+                              ),
+                            ),
+                            child: Row(
+                              mainAxisSize: MainAxisSize.min,
+                              children: [
+                                Icon(
+                                  Icons.barcode_reader,
+                                  size: 16,
+                                  color: AppTheme.primary.withValues(alpha: 0.9),
+                                ),
+                                const SizedBox(width: 8),
+                                Text(
+                                  'Escáner activo · abre la app al escanear',
+                                  style: TextStyle(
+                                    color: Colors.white.withValues(alpha: 0.7),
+                                    fontSize: 12,
+                                  ),
+                                ),
+                              ],
+                            ),
+                          ),
+                        ],
                         const SizedBox(height: 48),
                         _ScanButton(onPressed: () => _openScanner(context)),
                       ],