autentificacion por celular

lib/src/screens/welcome.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:prosappco/src/authentication/authentication_repository.dart';
 
 class WelcomeScreen extends StatefulWidget {
   const WelcomeScreen({super.key});
@@ -34,6 +35,34 @@ class _WelcomeScreenState extends State<WelcomeScreen> {
               height: 100,
             ),
           ),
+          Container(
+            child: Padding(
+              padding: const EdgeInsets.all(10),
+              child: Align(
+                  alignment: Alignment.topRight,
+                  child: ElevatedButton(
+                    onPressed: () {
+                      AuthenticationRepository.instance.logout();
+                    },
+                    child: Text(
+                      'Cerrar Sesión',
+                      style: TextStyle(
+                        color: Colors.white,
+                        fontWeight: FontWeight.bold,
+                        fontSize: 15,
+                      ),
+                    ),
+                    style: ElevatedButton.styleFrom(
+                      primary: Color(0xFF2BA4EC),
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(50),
+                      ),
+                      elevation: 0,
+                      minimumSize: Size(150, 40),
+                    ),
+                  )),
+            ),
+          ),
           Container(
             padding: const EdgeInsets.symmetric(horizontal: 0, vertical: 20),
             margin: const EdgeInsets.only(top: 170),