Add Profile screen with name, title, company, phone, signature settings

lib/app/router.dart

@@ -10,6 +10,7 @@ import '../features/clients/presentation/client_form_screen.dart';
 import '../features/emails/presentation/emails_screen.dart';
 import '../features/emails/presentation/email_compose_screen.dart';
 import '../features/events/presentation/events_screen.dart';
+import '../features/profile/presentation/profile_screen.dart';
 import '../shared/providers/auth_provider.dart';
 
 final routerProvider = Provider<GoRouter>((ref) {
@@ -81,6 +82,10 @@ final routerProvider = Provider<GoRouter>((ref) {
             path: '/events',
             builder: (context, state) => const EventsScreen(),
           ),
+          GoRoute(
+            path: '/profile',
+            builder: (context, state) => const ProfileScreen(),
+          ),
         ],
       ),
     ],
@@ -115,6 +120,11 @@ class MainShell extends StatelessWidget {
             selectedIcon: Icon(Icons.event),
             label: 'Events',
           ),
+          NavigationDestination(
+            icon: Icon(Icons.person_outline),
+            selectedIcon: Icon(Icons.person),
+            label: 'Profile',
+          ),
         ],
       ),
     );
@@ -124,6 +134,7 @@ class MainShell extends StatelessWidget {
     final location = GoRouterState.of(context).matchedLocation;
     if (location.startsWith('/emails')) return 1;
     if (location.startsWith('/events')) return 2;
+    if (location.startsWith('/profile')) return 3;
     return 0;
   }
   
@@ -138,6 +149,9 @@ class MainShell extends StatelessWidget {
       case 2:
         context.go('/events');
         break;
+      case 3:
+        context.go('/profile');
+        break;
     }
   }
 }