Split welcome and add authview

lib/services/authentication_manager.dart

@@ -32,11 +32,13 @@ class AuthenticationManager extends ChangeNotifier {
   }
 
   bool _isAuthenticated = false;
+  bool _isInitializing = true;
   String _apiToken = '';
   UserInfo? _userInfo;
   BrandmeisterClient? _client;
 
   bool get isAuthenticated => _isAuthenticated;
+  bool get isInitializing => _isInitializing;
   String get apiToken => _apiToken;
   UserInfo? get userInfo => _userInfo;
 
@@ -50,7 +52,6 @@ class AuthenticationManager extends ChangeNotifier {
         try {
           _userInfo = await _client!.whoami();
           _isAuthenticated = true;
-          notifyListeners();
         } catch (e) {
           // Token is invalid, clear it
           await logout();
@@ -58,6 +59,9 @@ class AuthenticationManager extends ChangeNotifier {
       }
     } catch (e) {
       debugPrint('Error loading token: $e');
+    } finally {
+      _isInitializing = false;
+      notifyListeners();
     }
   }