User Roles

// User type IDs in the system
1: Super Admin
2: Branch Manager  
3: Staff/Employee

final List<Widget> _screens = [
  const DashboardScreen(),    // Analytics and metrics
  const CustomerScreen(),     // Customer management  
  const EncomiendaScreen(),  // Package management
  const MotorizadosScreen(), // Driver management
];

POST /auth/login
{
  "email": "admin@example.com",
  "password": "password123"
}

Routes:
- Dashboard (modulesCliente)
- Request Shipment (solicitarEnvio)
- Pending Requests (solicitudesEnvio)  
- Completed Requests (solicitudesAtendidas)
- Profile (userClienteDetail)

POST /auth/loginCliente
{
  "usuario": "customer123",
  "password": "password123"
}

// User type IDs for drivers
4: Primary Driver (Motorizado Principal)
5: Secondary Driver (Motorizado Secundario)

Modules:
- Dashboard: Performance metrics and statistics
- Encomiendas: View and manage assigned packages

POST /encomienda/addMotorizados
{
  "id_encomienda": 123,
  "motorizados": [4, 8]  // Driver user IDs
}

class AuthSession {
  int? id;
  int? idUsuario;
  String? nombres;
  String? email;
  int? idTipoUsuario;  // Role: 1-3 (Admin), Customer, 4-5 (Driver)
  int? idSucursal;     // Branch ID (for admin/driver)
  String? token;       // JWT authentication token
}

headers: {
  'Authorization': 'Bearer $token'
}