fix(alarm): unfreeze snooze modal and add per-minute snooze countdown

The snooze button was fire-and-forget without error handling: if
posponerAlarma threw (e.g. native scheduleAlarm returns false on a
device without exact-alarm permission), _dismissScreen never ran. The
stuck modal also kept _alarmaSonandoActiva true, which made the next
ring get ignored. _posponer/_detener now dismiss in a finally and stop
audio defensively.

Add a native, AlarmManager-driven snooze countdown notification that
re-posts every minute ("Rings in N min", 3->2->1) while the engine is
dead. scheduleSpec drives scheduleSnoozeCountdown for snoozes (instead
of the 30-min pre-notice). Localized text and button labels travel
Dart->Kotlin as {minutes} templates, same pattern as preNoticeTemplate.

Notification actions: "snooze again" (snoozeAgain, anchored to now)
reports back via the existing snoozed event; "stop" (cancelSnooze)
records a handled occurrence for cold-start reconciliation and emits a
new snoozeCancelled event handled in EstadoAlarmas.

Adds snoozeCountdown/snoozeAgainAction keys across all 13 locales and a
test for the snoozeCancelled event. Kotlin changes are static-reviewed
only; no Android build environment available here.

lib/estado/estado_alarmas.dart

@@ -281,6 +281,10 @@ class EstadoAlarmas extends ChangeNotifier {
   /// The native scheduler already re-registered setAlarmClock, so this only
   /// persists the canonical state — it MUST NOT call android.programar again.
   Future<void> _alRecibirEventoNativo(EventoAlarmaAndroid evento) async {
+    if (evento.accion == EventoAlarmaAndroid.accionSnoozeCancelled) {
+      await _registrarCancelacionSnoozeNativa(evento);
+      return;
+    }
     if (evento.accion != EventoAlarmaAndroid.accionSnoozed) return;
     if (evento.alarmaId.isEmpty || evento.snoozeUntilMillis <= 0) return;
     final hasta = DateTime.fromMillisecondsSinceEpoch(evento.snoozeUntilMillis);
@@ -304,6 +308,30 @@ class EstadoAlarmas extends ChangeNotifier {
     }
   }
 
+  /// Mirrors a native snooze cancellation ("Detener" on the countdown
+  /// notification). The native scheduler already advanced to the next normal
+  /// occurrence, so this only clears the snooze in the canonical config and
+  /// MUST NOT call android.programar again (would double-schedule).
+  Future<void> _registrarCancelacionSnoozeNativa(
+    EventoAlarmaAndroid evento,
+  ) async {
+    if (evento.alarmaId.isEmpty) return;
+    final origen =
+        evento.occurrenceAtMillis > 0
+            ? DateTime.fromMillisecondsSinceEpoch(evento.occurrenceAtMillis)
+            : DateTime.now();
+    debugPrint(
+      '[PluriWave][alarmas] snooze cancelado nativo id=${evento.alarmaId} origen=${origen.toIso8601String()}',
+    );
+    try {
+      final config = await servicio.completarEjecucion(evento.alarmaId, origen);
+      _aplicar(config);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('[PluriWave][alarmas] cancelar snooze nativo ERROR $e');
+    }
+  }
+
   Future<void> _sincronizarEjecucionesGestionadasPorAndroid() async {
     try {
       final ejecuciones = await android.obtenerEjecucionesNativasGestionadas();

lib/l10n/app_ar.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "يبدأ خلال {minutes} دقيقة",
+  "snoozeCountdown": "يرنّ خلال {minutes} دقيقة",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "غفوة مرة أخرى",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_bn.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "{minutes} মিনিটে শুরু হবে",
+  "snoozeCountdown": "{minutes} মিনিটে বাজবে",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "আবার স্নুজ করুন",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_de.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "Startet in {minutes} Min.",
+  "snoozeCountdown": "Klingelt in {minutes} Min.",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Erneut schlummern",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_en.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "Starts in {minutes} min",
+  "snoozeCountdown": "Rings in {minutes} min",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Snooze again",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_es.arb

@@ -592,6 +592,15 @@
     }
   },
   "preNoticeCountdown": "Empieza en {minutes} min",
+  "snoozeCountdown": "Suena en {minutes} min",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Posponer otra vez",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_fr.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "Démarre dans {minutes} min",
+  "snoozeCountdown": "Sonne dans {minutes} min",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Reporter encore",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_hi.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "{minutes} मिनट में शुरू होगा",
+  "snoozeCountdown": "{minutes} मिनट में बजेगा",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "फिर से स्नूज़ करें",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_id.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "Mulai dalam {minutes} menit",
+  "snoozeCountdown": "Berbunyi dalam {minutes} mnt",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Tunda lagi",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_it.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "Inizia tra {minutes} min",
+  "snoozeCountdown": "Suona tra {minutes} min",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Posponi di nuovo",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_ja.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "{minutes}分後に開始",
+  "snoozeCountdown": "{minutes}分後に鳴ります",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "もう一度スヌーズ",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_pt.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "Começa em {minutes} min",
+  "snoozeCountdown": "Toca em {minutes} min",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Adiar novamente",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_ru.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "Начнётся через {minutes} мин",
+  "snoozeCountdown": "Прозвонит через {minutes} мин",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "Отложить снова",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/app_zh.arb

@@ -629,6 +629,15 @@
     }
   },
   "preNoticeCountdown": "{minutes}分钟后开始",
+  "snoozeCountdown": "{minutes}分钟后响铃",
+  "@snoozeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "snoozeAgainAction": "再次小睡",
   "@preNoticeCountdown": {
     "placeholders": {
       "minutes": {

lib/l10n/gen/app_localizations.dart

@@ -2312,6 +2312,18 @@ abstract class AppLocalizations {
   /// **'Empieza en {minutes} min'**
   String preNoticeCountdown(int minutes);
 
+  /// No description provided for @snoozeCountdown.
+  ///
+  /// In es, this message translates to:
+  /// **'Suena en {minutes} min'**
+  String snoozeCountdown(int minutes);
+
+  /// No description provided for @snoozeAgainAction.
+  ///
+  /// In es, this message translates to:
+  /// **'Posponer otra vez'**
+  String get snoozeAgainAction;
+
   /// No description provided for @eqDeviceEditTitle.
   ///
   /// In es, this message translates to:

lib/l10n/gen/app_localizations_ar.dart

@@ -1253,6 +1253,14 @@ class AppLocalizationsAr extends AppLocalizations {
     return 'يبدأ خلال $minutes دقيقة';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'يرنّ خلال $minutes دقيقة';
+  }
+
+  @override
+  String get snoozeAgainAction => 'غفوة مرة أخرى';
+
   @override
   String get eqDeviceEditTitle => 'تعديل الجهاز';
 

lib/l10n/gen/app_localizations_bn.dart

@@ -1260,6 +1260,14 @@ class AppLocalizationsBn extends AppLocalizations {
     return '$minutes মিনিটে শুরু হবে';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return '$minutes মিনিটে বাজবে';
+  }
+
+  @override
+  String get snoozeAgainAction => 'আবার স্নুজ করুন';
+
   @override
   String get eqDeviceEditTitle => 'ডিভাইস সম্পাদনা করুন';
 

lib/l10n/gen/app_localizations_de.dart

@@ -1270,6 +1270,14 @@ class AppLocalizationsDe extends AppLocalizations {
     return 'Startet in $minutes Min.';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Klingelt in $minutes Min.';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Erneut schlummern';
+
   @override
   String get eqDeviceEditTitle => 'Gerät bearbeiten';
 

lib/l10n/gen/app_localizations_en.dart

@@ -1256,6 +1256,14 @@ class AppLocalizationsEn extends AppLocalizations {
     return 'Starts in $minutes min';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Rings in $minutes min';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Snooze again';
+
   @override
   String get eqDeviceEditTitle => 'Edit device';
 

lib/l10n/gen/app_localizations_es.dart

@@ -1265,6 +1265,14 @@ class AppLocalizationsEs extends AppLocalizations {
     return 'Empieza en $minutes min';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Suena en $minutes min';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Posponer otra vez';
+
   @override
   String get eqDeviceEditTitle => 'Editar dispositivo';
 

lib/l10n/gen/app_localizations_fr.dart

@@ -1275,6 +1275,14 @@ class AppLocalizationsFr extends AppLocalizations {
     return 'Démarre dans $minutes min';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Sonne dans $minutes min';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Reporter encore';
+
   @override
   String get eqDeviceEditTitle => 'Modifier l\'appareil';
 

lib/l10n/gen/app_localizations_hi.dart

@@ -1259,6 +1259,14 @@ class AppLocalizationsHi extends AppLocalizations {
     return '$minutes मिनट में शुरू होगा';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return '$minutes मिनट में बजेगा';
+  }
+
+  @override
+  String get snoozeAgainAction => 'फिर से स्नूज़ करें';
+
   @override
   String get eqDeviceEditTitle => 'डिवाइस संपादित करें';
 

lib/l10n/gen/app_localizations_id.dart

@@ -1264,6 +1264,14 @@ class AppLocalizationsId extends AppLocalizations {
     return 'Mulai dalam $minutes menit';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Berbunyi dalam $minutes mnt';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Tunda lagi';
+
   @override
   String get eqDeviceEditTitle => 'Edit perangkat';
 

lib/l10n/gen/app_localizations_it.dart

@@ -1270,6 +1270,14 @@ class AppLocalizationsIt extends AppLocalizations {
     return 'Inizia tra $minutes min';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Suona tra $minutes min';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Posponi di nuovo';
+
   @override
   String get eqDeviceEditTitle => 'Modifica dispositivo';
 

lib/l10n/gen/app_localizations_ja.dart

@@ -1220,6 +1220,14 @@ class AppLocalizationsJa extends AppLocalizations {
     return '$minutes分後に開始';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return '$minutes分後に鳴ります';
+  }
+
+  @override
+  String get snoozeAgainAction => 'もう一度スヌーズ';
+
   @override
   String get eqDeviceEditTitle => 'デバイスを編集';
 

lib/l10n/gen/app_localizations_pt.dart

@@ -1262,6 +1262,14 @@ class AppLocalizationsPt extends AppLocalizations {
     return 'Começa em $minutes min';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Toca em $minutes min';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Adiar novamente';
+
   @override
   String get eqDeviceEditTitle => 'Editar dispositivo';
 

lib/l10n/gen/app_localizations_ru.dart

@@ -1266,6 +1266,14 @@ class AppLocalizationsRu extends AppLocalizations {
     return 'Начнётся через $minutes мин';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return 'Прозвонит через $minutes мин';
+  }
+
+  @override
+  String get snoozeAgainAction => 'Отложить снова';
+
   @override
   String get eqDeviceEditTitle => 'Изменить устройство';
 

lib/l10n/gen/app_localizations_zh.dart

@@ -1213,6 +1213,14 @@ class AppLocalizationsZh extends AppLocalizations {
     return '$minutes分钟后开始';
   }
 
+  @override
+  String snoozeCountdown(int minutes) {
+    return '$minutes分钟后响铃';
+  }
+
+  @override
+  String get snoozeAgainAction => '再次小睡';
+
   @override
   String get eqDeviceEditTitle => '编辑设备';
 

lib/pantallas/pantalla_alarma_sonando.dart

@@ -154,10 +154,17 @@ class _PantallaAlarmaSonandoState extends State<PantallaAlarmaSonando> {
   Future<void> _detener() async {
     final radio = context.read<EstadoRadio>();
     final alarmas = context.read<EstadoAlarmas>();
-    await _liberarAudioLocal();
-    await radio.audio.pausar();
-    await alarmas.finalizarEjecucion(widget.alarma.id);
-    if (mounted) _dismissScreen();
+    await _silenciarAudio(radio);
+    // Dismiss is run from finally so a failing reschedule/teardown can never
+    // leave the ringing screen stuck open (which would also block the next
+    // ring via the _alarmaSonandoActiva guard in app.dart).
+    try {
+      await alarmas.finalizarEjecucion(widget.alarma.id);
+    } catch (e) {
+      debugPrint('[PluriWave][alarmas] finalizar ejecucion fallo: $e');
+    } finally {
+      if (mounted) _dismissScreen();
+    }
   }
 
   /// Flutter-first snooze (S2-R1): tears down local audio, then routes
@@ -166,10 +173,33 @@ class _PantallaAlarmaSonandoState extends State<PantallaAlarmaSonando> {
   Future<void> _posponer(int minutos) async {
     final radio = context.read<EstadoRadio>();
     final alarmas = context.read<EstadoAlarmas>();
-    await _liberarAudioLocal();
-    await radio.audio.pausar();
-    await alarmas.posponerAlarma(widget.alarma, minutos);
-    if (mounted) _dismissScreen();
+    await _silenciarAudio(radio);
+    // See _detener: the screen MUST close even if posponerAlarma throws
+    // (e.g. native scheduleAlarm returns false on a device without exact
+    // alarm permission). Otherwise the modal freezes and the snooze never
+    // re-rings because _alarmaSonandoActiva stays true.
+    try {
+      await alarmas.posponerAlarma(widget.alarma, minutos);
+    } catch (e) {
+      debugPrint('[PluriWave][alarmas] posponer alarma fallo: $e');
+    } finally {
+      if (mounted) _dismissScreen();
+    }
+  }
+
+  /// Stops both audio sources (local fallback player and the radio handler)
+  /// without letting either failure abort the caller's dismiss flow.
+  Future<void> _silenciarAudio(EstadoRadio radio) async {
+    try {
+      await _liberarAudioLocal();
+    } catch (e) {
+      debugPrint('[PluriWave][alarmas] liberar audio local fallo: $e');
+    }
+    try {
+      await radio.audio.pausar();
+    } catch (e) {
+      debugPrint('[PluriWave][alarmas] pausar radio fallo: $e');
+    }
   }
 
   /// Dismisses the alarm screen safely in both live-app and dead-app states.

lib/servicios/servicio_alarmas_android.dart

@@ -23,6 +23,10 @@ class EventoAlarmaAndroid {
   /// (notification "Posponer" while the app may be backgrounded/killed).
   static const accionSnoozed = 'snoozed';
 
+  /// Action reported when a pending snooze was cancelled natively from the
+  /// countdown notification ("Detener" while the app may be killed).
+  static const accionSnoozeCancelled = 'snoozeCancelled';
+
   final String alarmaId;
   final String titulo;
   final String accion;
@@ -183,6 +187,16 @@ class ServicioAlarmasAndroid implements PuertoAlarmasAndroid {
     );
   }
 
+  /// Same sentinel strategy as [_preNoticeTemplate], but for the snooze
+  /// countdown notification re-posted every minute while an alarm is snoozed.
+  static String _snoozeCountdownTemplate(AppLocalizations l10n) {
+    const sentinel = 42424242;
+    return l10n.snoozeCountdown(sentinel).replaceFirst(
+      sentinel.toString(),
+      '{minutes}',
+    );
+  }
+
   @override
   Stream<EventoAlarmaAndroid> get eventosAlarma => _eventosController.stream;
 
@@ -203,6 +217,9 @@ class ServicioAlarmasAndroid implements PuertoAlarmasAndroid {
       'id': alarma.id,
       'title': localizedAlarmName(_textos, alarma.nombre),
       'preNoticeTemplate': _preNoticeTemplate(_textos),
+      'snoozeCountdownTemplate': _snoozeCountdownTemplate(_textos),
+      'snoozeAgainLabel': _textos.snoozeAgainAction,
+      'snoozeStopLabel': _textos.stopAlarmAction,
       'triggerAtMillis': proxima.millisecondsSinceEpoch,
       'preNoticeAtMillis':
           alarma.snoozeHasta == null