Add touch fallback to open admin for phone testing

lib/features/home/home_view.dart

@@ -45,7 +45,9 @@ class _HomeViewState extends ConsumerState<HomeView> {
   Timer? _comboResetTimer;
   Timer? _simulationShortcutTimer;
   Timer? _autoRefreshTimer;
+  Timer? _touchUnlockTimer;
   bool _isAutoRefreshRunning = false;
+  int _touchUnlockTapCount = 0;
 
   @override
   void initState() {
@@ -64,6 +66,7 @@ class _HomeViewState extends ConsumerState<HomeView> {
     _comboResetTimer?.cancel();
     _simulationShortcutTimer?.cancel();
     _autoRefreshTimer?.cancel();
+    _touchUnlockTimer?.cancel();
     _homeFocusNode.dispose();
     super.dispose();
   }
@@ -213,6 +216,30 @@ class _HomeViewState extends ConsumerState<HomeView> {
     _simulationShortcutKeys.clear();
   }
 
+  void _resetTouchUnlock() {
+    _touchUnlockTimer?.cancel();
+    _touchUnlockTapCount = 0;
+  }
+
+  void _registerTouchUnlockTap() {
+    _touchUnlockTimer?.cancel();
+    _touchUnlockTimer = Timer(const Duration(seconds: 3), _resetTouchUnlock);
+    _touchUnlockTapCount += 1;
+
+    if (_touchUnlockTapCount < 5) return;
+
+    _resetTouchUnlock();
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      if (!mounted) return;
+      await Navigator.of(context).push(
+        MaterialPageRoute(builder: (_) => const AdminScreen()),
+      );
+      if (mounted) {
+        _homeFocusNode.requestFocus();
+      }
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     // Audio trigger listener
@@ -282,6 +309,17 @@ class _HomeViewState extends ConsumerState<HomeView> {
               },
               child: screen,
             ),
+            // Hidden touch fallback for phones/tablets during testing:
+            // tap top-left area 5x quickly to open admin.
+            Positioned(
+              top: 0,
+              left: 0,
+              child: GestureDetector(
+                behavior: HitTestBehavior.translucent,
+                onTap: _registerTouchUnlockTap,
+                child: const SizedBox(width: 110, height: 110),
+              ),
+            ),
           ],
         ),
       ),