feat: modo multidispositivo con Nearby Connections

- ServicioNearby completo: P2P_STAR, auto-accept, protocolo mensajes
- PantallaLobbyHost: QR code + lista jugadores tiempo real
- PantallaUnirse: escaneo QR + conexión + sala espera
- Protocolo MensajeP2P: salaInfo, partidaInicio, fase, voto, resultado, fin
- Manejo desconexiones jugador/host
- l10n: nuevas keys es/en
- Version bump 1.1.0+5

lib/l10n/generated/app_localizations.dart

@@ -992,6 +992,84 @@ abstract class AppLocalizations {
   /// In es, this message translates to:
   /// **'Licencias'**
   String get licenses;
+
+  /// No description provided for @scanToJoin.
+  ///
+  /// In es, this message translates to:
+  /// **'Escanea el QR para unirte'**
+  String get scanToJoin;
+
+  /// No description provided for @connectedPlayers.
+  ///
+  /// In es, this message translates to:
+  /// **'Jugadores conectados'**
+  String get connectedPlayers;
+
+  /// No description provided for @waitingForPlayers.
+  ///
+  /// In es, this message translates to:
+  /// **'Esperando jugadores...'**
+  String get waitingForPlayers;
+
+  /// No description provided for @needMorePlayers.
+  ///
+  /// In es, this message translates to:
+  /// **'Faltan {count} jugadores más'**
+  String needMorePlayers(int count);
+
+  /// No description provided for @starting.
+  ///
+  /// In es, this message translates to:
+  /// **'Iniciando...'**
+  String get starting;
+
+  /// No description provided for @enterNameAndScan.
+  ///
+  /// In es, this message translates to:
+  /// **'Escribe tu nombre y escanea el QR del host'**
+  String get enterNameAndScan;
+
+  /// No description provided for @yourName.
+  ///
+  /// In es, this message translates to:
+  /// **'Tu nombre'**
+  String get yourName;
+
+  /// No description provided for @nameRequired.
+  ///
+  /// In es, this message translates to:
+  /// **'Escribe tu nombre'**
+  String get nameRequired;
+
+  /// No description provided for @connectingTo.
+  ///
+  /// In es, this message translates to:
+  /// **'Conectando a'**
+  String get connectingTo;
+
+  /// No description provided for @scanQR.
+  ///
+  /// In es, this message translates to:
+  /// **'Escanear QR'**
+  String get scanQR;
+
+  /// No description provided for @scanHostQR.
+  ///
+  /// In es, this message translates to:
+  /// **'Apunta al QR del host'**
+  String get scanHostQR;
+
+  /// No description provided for @connectedWaiting.
+  ///
+  /// In es, this message translates to:
+  /// **'¡Conectado!'**
+  String get connectedWaiting;
+
+  /// No description provided for @waitingForHost.
+  ///
+  /// In es, this message translates to:
+  /// **'Esperando a que el host inicie la partida...'**
+  String get waitingForHost;
 }
 
 class _AppLocalizationsDelegate