añadido generador de imagenes

lib/data/local_vault_service.dart

@@ -48,8 +48,8 @@ class LocalVaultService {
         if (supported || canCheck) {
           final bool didAuthenticate = await _localAuth.authenticate(
             localizedReason:
-                'Autentícate para acceder a la llave de encriptación',
-            biometricOnly: false,
+                'Toca el sensor de huellas digitales',
+            biometricOnly: true,
             sensitiveTransaction: true,
             persistAcrossBackgrounding: false,
           );
@@ -131,8 +131,8 @@ class LocalVaultService {
 
         if (supported || canCheck) {
           final bool didAuthenticate = await _localAuth.authenticate(
-            localizedReason: 'Configura biometría para proteger la llave',
-            biometricOnly: false,
+            localizedReason: 'Toca el sensor de huellas digitales',
+            biometricOnly: true,
             sensitiveTransaction: true,
             persistAcrossBackgrounding: false,
           );
@@ -185,7 +185,7 @@ class LocalVaultService {
       // Prefer biometric-only authentication for activation to ensure the
       // user sets up biometric unlocking (no device credential fallback).
       final bool didAuthenticate = await _localAuth.authenticate(
-        localizedReason: 'Autentícate para habilitar biometría',
+        localizedReason: 'Toca el sensor de huellas digitales',
         biometricOnly: true,
         sensitiveTransaction: true,
         persistAcrossBackgrounding: false,