fix: alot

lib/viewmodels/bar_screen_view_model.dart

@@ -37,6 +37,15 @@ class BarScreenViewModel extends ChangeNotifier {
   BarTab? get selectedTab =>
       _tabs.firstWhereOrNull((tab) => tab.id == _selectedTabId);
 
+  bool hasOpenTabNamed(String name, {String? exceptTabId}) {
+    final normalized = name.trim().toLowerCase();
+    return _tabs.any(
+      (tab) =>
+          tab.id != exceptTabId &&
+          tab.customerName.trim().toLowerCase() == normalized,
+    );
+  }
+
   void ensureLoaded() {
     if (_subscription != null) return;
 

lib/viewmodels/remote_sync_view_model.dart

@@ -24,6 +24,11 @@ class RemoteSyncViewModel extends ChangeNotifier {
   bool _isConfigured = false;
   bool get isConfigured => _isConfigured;
 
+  bool _wasRevoked = false;
+
+  /// The server rejected this device's token; it needs to be linked again.
+  bool get wasRevoked => _wasRevoked;
+
   DateTime? _lastSyncAt;
   DateTime? get lastSyncAt => _lastSyncAt;
 
@@ -54,6 +59,7 @@ class RemoteSyncViewModel extends ChangeNotifier {
   /// Called once registration stored new credentials.
   Future<void> activate() async {
     await _refreshStatus();
+    if (_isConfigured) _wasRevoked = false;
     notifyListeners();
 
     if (!_isConfigured) return;
@@ -90,6 +96,7 @@ class RemoteSyncViewModel extends ChangeNotifier {
     syncService.stopPeriodicSync();
     await syncService.clearCredentials();
     _isConfigured = false;
+    _wasRevoked = false;
     _venueId = null;
     _lastSyncAt = null;
     _lastError = null;
@@ -105,8 +112,8 @@ class RemoteSyncViewModel extends ChangeNotifier {
       case RemoteSyncEventType.syncFailed:
         _lastError = event.message;
       case RemoteSyncEventType.unauthorized:
-        // The router sends the device back to registration.
         _isConfigured = false;
+        _wasRevoked = true;
       case RemoteSyncEventType.tabClosedRemotely:
       case RemoteSyncEventType.conflict:
         break;