Añadir con que usuario esta logueado

app/src/main/java/com/example/despensapp/ui/screens/PantryScreen.kt

@@ -111,7 +111,20 @@ fun PantryScreen(
     Scaffold(
         topBar = {
             TopAppBar(
-                title = { Text(if (showShoppingList) stringResource(R.string.shopping_list_title) else stringResource(R.string.pantry_title)) },
+                title = { 
+                    Column {
+                        Text(
+                            if (showShoppingList) stringResource(R.string.shopping_list_title) 
+                            else stringResource(R.string.pantry_title),
+                            style = MaterialTheme.typography.titleLarge
+                        )
+                        Text(
+                            stringResource(R.string.pantry_subtitle, userName),
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onPrimaryContainer.copy(alpha = 0.8f)
+                        )
+                    }
+                },
                 actions = {
                     if (showShoppingList) {
                         IconButton(onClick = { shareShoppingList() }) {

app/src/main/res/values/strings.xml

@@ -38,6 +38,7 @@
 
     <!-- Pantry Screen -->
     <string name="pantry_title">Mi Despensa</string>
+    <string name="pantry_subtitle">Usuario: %1$s</string>
     <string name="shopping_list_title">Lista de la Compra</string>
     <string name="pantry_search_placeholder">Buscar productos...</string>
     <string name="pantry_search_clear">Limpiar</string>