diff --git a/lib/connector/meshcore_connector.dart b/lib/connector/meshcore_connector.dart
index b99ecf7..c804340 100644
--- a/lib/connector/meshcore_connector.dart
+++ b/lib/connector/meshcore_connector.dart
@@ -14,6 +14,7 @@ import '../models/companion_radio_stats.dart';
 import '../models/contact.dart';
 import '../models/message.dart';
 import '../models/path_selection.dart';
+import '../models/translation_support.dart';
 import '../helpers/reaction_helper.dart';
 import '../helpers/smaz.dart';
 import '../services/app_debug_log_service.dart';
@@ -26,6 +27,7 @@ import '../services/path_history_service.dart';
 import '../services/app_settings_service.dart';
 import '../services/background_service.dart';
 import '../services/timeout_prediction_service.dart';
+import '../services/translation_service.dart';
 import '../services/notification_service.dart';
 import 'meshcore_connector_usb.dart';
 import 'meshcore_connector_tcp.dart';
@@ -180,6 +182,7 @@ class MeshCoreConnector extends ChangeNotifier {
   bool _isLoadingChannels = false;
   bool _hasLoadedChannels = false;
   TimeoutPredictionService? _timeoutPredictionService;
+  TranslationService? _translationService;
   // Intentionally global (not per-contact): tracks overall network activity.
   // Frequent RX from any source indicates a busy network with more collisions.
   DateTime _lastRxTime = DateTime.now();
@@ -482,7 +485,7 @@ class MeshCoreConnector extends ChangeNotifier {
 
   String _messageMergeKey(Message message) {
     final messageId = message.messageId;
-    if (messageId != null && messageId.isNotEmpty) {
+    if (messageId.isNotEmpty) {
       return 'id:$messageId';
     }
     return 'fallback:${message.senderKeyHex}:${message.isOutgoing}:${message.isCli}:${message.timestamp.millisecondsSinceEpoch}:${message.text}';
@@ -721,6 +724,7 @@ class MeshCoreConnector extends ChangeNotifier {
     required MessageRetryService retryService,
     required PathHistoryService pathHistoryService,
     AppSettingsService? appSettingsService,
+    TranslationService? translationService,
     BleDebugLogService? bleDebugLogService,
     AppDebugLogService? appDebugLogService,
     BackgroundService? backgroundService,
@@ -729,6 +733,7 @@ class MeshCoreConnector extends ChangeNotifier {
     _retryService = retryService;
     _pathHistoryService = pathHistoryService;
     _appSettingsService = appSettingsService;
+    _translationService = translationService;
     _bleDebugLogService = bleDebugLogService;
     _appDebugLogService = appDebugLogService;
     _backgroundService = backgroundService;
@@ -952,6 +957,126 @@ class MeshCoreConnector extends ChangeNotifier {
     }
   }
 
+  Future<void> _translateIncomingContactMessage(
+    String contactKeyHex,
+    Message message,
+  ) async {
+    try {
+      final service = _translationService;
+      if (service == null ||
+          !service.shouldTranslateIncoming(
+            text: message.text,
+            isCli: message.isCli,
+            isOutgoing: message.isOutgoing,
+          )) {
+        return;
+      }
+      final targetLanguageCode = service.resolvedIncomingLanguageCode(
+        _appSettingsService?.settings.languageOverride,
+      );
+      final result = await service.translateIncomingText(
+        text: message.text,
+        targetLanguageCode: targetLanguageCode,
+      );
+      if (result == null) {
+        return;
+      }
+      final translated = result.status == MessageTranslationStatus.completed
+          ? result.translatedText
+          : null;
+      _updateStoredContactMessage(
+        contactKeyHex,
+        message.messageId,
+        (current) => current.copyWith(
+          translatedText: translated,
+          translatedLanguageCode: result.detectedLanguageCode,
+          translationStatus: result.status,
+          translationModelId: result.modelId,
+        ),
+      );
+    } catch (error) {
+      appLogger.warn('Translation failed for contact message: $error');
+    }
+  }
+
+  Future<void> _translateIncomingChannelMessage(
+    int channelIndex,
+    ChannelMessage message,
+  ) async {
+    try {
+      final service = _translationService;
+      if (service == null ||
+          !service.shouldTranslateIncoming(
+            text: message.text,
+            isCli: false,
+            isOutgoing: message.isOutgoing,
+          )) {
+        return;
+      }
+      final targetLanguageCode = service.resolvedIncomingLanguageCode(
+        _appSettingsService?.settings.languageOverride,
+      );
+      final result = await service.translateIncomingText(
+        text: message.text,
+        targetLanguageCode: targetLanguageCode,
+      );
+      if (result == null) {
+        return;
+      }
+      final translated = result.status == MessageTranslationStatus.completed
+          ? result.translatedText
+          : null;
+      _updateStoredChannelMessage(
+        channelIndex,
+        message.messageId,
+        (current) => current.copyWith(
+          translatedText: translated,
+          translatedLanguageCode: result.detectedLanguageCode,
+          translationStatus: result.status,
+          translationModelId: result.modelId,
+        ),
+      );
+    } catch (error) {
+      appLogger.warn('Translation failed for channel message: $error');
+    }
+  }
+
+  void _updateStoredContactMessage(
+    String contactKeyHex,
+    String messageId,
+    Message Function(Message current) update,
+  ) {
+    final messages = _conversations[contactKeyHex];
+    if (messages == null) {
+      return;
+    }
+    final index = messages.indexWhere((entry) => entry.messageId == messageId);
+    if (index < 0) {
+      return;
+    }
+    messages[index] = update(messages[index]);
+    _messageStore.saveMessages(contactKeyHex, messages);
+    notifyListeners();
+  }
+
+  void _updateStoredChannelMessage(
+    int channelIndex,
+    String messageId,
+    ChannelMessage Function(ChannelMessage current) update,
+  ) {
+    final messages = _channelMessages[channelIndex];
+    if (messages == null) {
+      return;
+    }
+    final index = messages.indexWhere((entry) => entry.messageId == messageId);
+    if (index < 0) {
+      return;
+    }
+    messages[index] = update(messages[index]);
+    _channelMessageStore.saveChannelMessages(channelIndex, messages);
+    notifyListeners();
+  }
+
   void _recordPathResult(
     String contactPubKeyHex,
     PathSelection selection,
@@ -2116,6 +2241,7 @@ class MeshCoreConnector extends ChangeNotifier {
     _channelSyncTimeout?.cancel();
     _channelSyncTimeout = null;
     _channelSyncRetries = 0;
+    await _translationService?.releaseModel();
 
     if (!skipBleDeviceDisconnect) {
       try {
@@ -2395,7 +2521,13 @@ class MeshCoreConnector extends ChangeNotifier {
     await sendFrame(buildGetContactByKeyFrame(pubKey));
   }
 
-  Future<void> sendMessage(Contact contact, String text) async {
+  Future<void> sendMessage(
+    Contact contact,
+    String text, {
+    String? originalText,
+    String? translatedLanguageCode,
+    String? translationModelId,
+  }) async {
     if (!isConnected || text.isEmpty) return;
 
     // Check if this is a reaction - apply locally with pending status and route through retry service
@@ -2426,7 +2558,13 @@ class MeshCoreConnector extends ChangeNotifier {
     }
 
     if (_retryService != null) {
-      await _retryService!.sendMessageWithRetry(contact: contact, text: text);
+      await _retryService!.sendMessageWithRetry(
+        contact: contact,
+        text: text,
+        originalText: originalText,
+        translatedLanguageCode: translatedLanguageCode,
+        translationModelId: translationModelId,
+      );
     } else {
       // Fallback to old behavior if retry service not initialized
       final resolved = resolvePathSelection(contact);
@@ -2435,6 +2573,9 @@ class MeshCoreConnector extends ChangeNotifier {
         text,
         pathLength: resolved.useFlood ? -1 : resolved.hopCount,
         pathBytes: Uint8List.fromList(resolved.pathBytes),
+        originalText: originalText,
+        translatedLanguageCode: translatedLanguageCode,
+        translationModelId: translationModelId,
       );
       _addMessage(contact.publicKeyHex, message);
       notifyListeners();
@@ -2740,7 +2881,13 @@ class MeshCoreConnector extends ChangeNotifier {
     }
   }
 
-  Future<void> sendChannelMessage(Channel channel, String text) async {
+  Future<void> sendChannelMessage(
+    Channel channel,
+    String text, {
+    String? originalText,
+    String? translatedLanguageCode,
+    String? translationModelId,
+  }) async {
     if (!isConnected || text.isEmpty) return;
 
     // Check if this is a reaction - if so, process it immediately instead of adding as a message
@@ -2787,6 +2934,9 @@ class MeshCoreConnector extends ChangeNotifier {
       text,
       _selfName ?? 'Me',
       channel.index,
+      originalText: originalText,
+      translatedLanguageCode: translatedLanguageCode,
+      translationModelId: translationModelId,
     );
     _addChannelMessage(channel.index, message);
     _pendingChannelSentQueue.add(message.messageId);
@@ -4061,6 +4211,11 @@ class MeshCoreConnector extends ChangeNotifier {
         }
       }
       _addMessage(message.senderKeyHex, message);
+      if (!message.isOutgoing) {
+        unawaited(
+          _translateIncomingContactMessage(message.senderKeyHex, message),
+        );
+      }
       _maybeIncrementContactUnread(message);
       notifyListeners();
 
@@ -4283,6 +4438,11 @@ class MeshCoreConnector extends ChangeNotifier {
         pathBytes: message.pathBytes,
       );
       final isNew = _addChannelMessage(message.channelIndex!, message);
+      if (isNew && !message.isOutgoing) {
+        unawaited(
+          _translateIncomingChannelMessage(message.channelIndex!, message),
+        );
+      }
       _maybeIncrementChannelUnread(message, isNew: isNew);
       notifyListeners();
       if (isNew) {
@@ -4362,6 +4522,9 @@ class MeshCoreConnector extends ChangeNotifier {
             pathBytes: message.pathBytes,
           );
           final isNew = _addChannelMessage(channel.index, message);
+          if (isNew && !message.isOutgoing) {
+            unawaited(_translateIncomingChannelMessage(channel.index, message));
+          }
           _maybeIncrementChannelUnread(message, isNew: isNew);
           notifyListeners();
           if (isNew) {
@@ -5056,6 +5219,11 @@ class MeshCoreConnector extends ChangeNotifier {
           senderKey: message.senderKey,
           senderName: message.senderName,
           text: replyInfo.actualMessage,
+          originalText: message.originalText,
+          translatedText: message.translatedText,
+          translatedLanguageCode: message.translatedLanguageCode,
+          translationStatus: message.translationStatus,
+          translationModelId: message.translationModelId,
           timestamp: message.timestamp,
           isOutgoing: message.isOutgoing,
           status: message.status,
diff --git a/lib/l10n/app_bg.arb b/lib/l10n/app_bg.arb
index 0f5145d..13e9de7 100644
--- a/lib/l10n/app_bg.arb
+++ b/lib/l10n/app_bg.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Извличане на данни за радиото…",
   "radioStats_settingsTile": "Статистически данни за радиостанции",
   "radioStats_settingsSubtitle": "Ниво на шума, RSSI, SNR и време на пренос",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enableTitle": "Активирайте превода",
+  "translation_title": "Превод",
+  "translation_composerTitle": "Преведете преди да изпратите",
+  "translation_enableSubtitle": "Превеждайте входящите съобщения и позволявайте предварително превеждане преди изпращане.",
+  "translation_composerSubtitle": "Контролира началния статус на иконата за превод, създадена от композитора.",
+  "translation_targetLanguage": "Целеви език",
+  "translation_useAppLanguage": "Използвайте езика на приложението",
+  "translation_downloadedModelLabel": "Изтегнат модел",
+  "translation_presetModelLabel": "Предварително конфигуриран модел от Hugging Face",
+  "translation_manualUrlLabel": "URL на ръководството",
+  "translation_downloadModel": "Изтеглете модела",
+  "translation_downloading": "Изтегляне...",
+  "translation_working": "Работа...",
+  "translation_stop": "Спрете",
+  "translation_mergingChunks": "Съединяване на изтеглените части в един файл...",
+  "translation_downloadedModels": "Изтеглени модели",
+  "translation_deleteModel": "Изтриване на модела",
+  "translation_modelDownloaded": "Моделът за превод е изтеглен.",
+  "translation_downloadStopped": "Изтеглянето беше прекъснато.",
+  "translation_downloadFailed": "Не успях да изтегля: {error}",
+  "translation_enterUrlFirst": "Въведете първо URL адрес на модела.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
-  "scanner_linuxPairingHidePin": "Скрий ПИН",
+  "scanner_linuxPairingPinTitle": "PIN за съвпадение чрез Bluetooth",
+  "scanner_linuxPairingPinPrompt": "Въведете PIN кода за {deviceName} (оставете празно, ако няма такъв).",
+  "scanner_linuxPairingHidePin": "Скриване на PIN кода",
   "scanner_linuxPairingShowPin": "Покажи PIN",
-  "scanner_linuxPairingPinTitle": "PIN код за сдвояване на Bluetooth",
-  "scanner_linuxPairingPinPrompt": "Въведете ПИН за {deviceName} (оставете празно, ако няма)."
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerDisabledHint": "Изпращайте съобщения на оригиналния въведен език.",
+  "translation_translateBeforeSending": "Преведете преди да изпратите",
+  "translation_messageTranslation": "Превод на съобщението",
+  "translation_composerEnabledHint": "Съобщенията ще бъдат преведени, преди да бъдат изпратени.",
+  "translation_translateTo": "Превеждане на {language}",
+  "translation_translationOptions": "Опции за превод",
+  "translation_systemLanguage": "Език на системата"
 }
diff --git a/lib/l10n/app_de.arb b/lib/l10n/app_de.arb
index c156a44..62badce 100644
--- a/lib/l10n/app_de.arb
+++ b/lib/l10n/app_de.arb
@@ -2035,6 +2035,34 @@
   "radioStats_stripWaiting": "Abrufen von Radiostatus…",
   "radioStats_settingsTile": "Senderinformationen",
   "radioStats_settingsSubtitle": "Rauschpegel, RSSI, Signal-Rausch-Verhältnis (SNR) und Nutzzeit",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_title": "Übersetzung",
+  "translation_composerTitle": "Übersetzen Sie vor dem Versenden",
+  "translation_enableSubtitle": "Nachrichten empfangen und übersetzen sowie die Möglichkeit bieten, Nachrichten vor dem Versenden zu übersetzen.",
+  "translation_enableTitle": "Aktivieren Sie die Übersetzung",
+  "translation_composerSubtitle": "Steuert den Standardzustand des Icons für die Übersetzung des Komponisten.",
+  "translation_targetLanguage": "Zielsprache",
+  "translation_useAppLanguage": "Verwenden Sie die App-Sprache",
+  "translation_downloadedModelLabel": "Heruntergeladenes Modell",
+  "translation_presetModelLabel": "Vordefinierter Hugging Face-Modell",
+  "translation_manualUrlLabel": "URL für das manuelle Modell",
+  "translation_downloadModel": "Modell herunterladen",
+  "translation_downloading": "Herunterladen...",
+  "translation_working": "Arbeiten...",
+  "translation_stop": "Stopp",
+  "translation_mergingChunks": "Zusammenführen der heruntergeladenen Teile in die finale Datei...",
+  "translation_downloadedModels": "Heruntergeladene Modelle",
+  "translation_deleteModel": "Modell löschen",
+  "translation_modelDownloaded": "Übersetzungsmotor heruntergeladen.",
+  "translation_downloadStopped": "Herunterladen abgebrochen.",
+  "translation_downloadFailed": "Download fehlgeschlagen: {error}",
+  "translation_enterUrlFirst": "Geben Sie zunächst die URL eines Modells ein.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2042,8 +2070,22 @@
       }
     }
   },
+  "scanner_linuxPairingPinPrompt": "Geben Sie den PIN-Code für {deviceName} ein (lassen Sie das Feld leer, falls kein PIN-Code vorhanden ist).",
   "scanner_linuxPairingShowPin": "PIN anzeigen",
-  "scanner_linuxPairingHidePin": "PIN ausblenden",
-  "scanner_linuxPairingPinTitle": "Bluetooth-Paarungs-PIN",
-  "scanner_linuxPairingPinPrompt": "Geben Sie die PIN für {deviceName} ein (leer lassen, falls keine)."
+  "scanner_linuxPairingPinTitle": "PIN für die Bluetooth-Verbindung",
+  "scanner_linuxPairingHidePin": "PIN verbergen",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_messageTranslation": "Nachricht übersetzen",
+  "translation_composerEnabledHint": "Die Nachrichten werden vor dem Versenden übersetzt.",
+  "translation_translateBeforeSending": "Übersetzen Sie vor dem Versenden",
+  "translation_composerDisabledHint": "Nachrichten in der ursprünglichen, getippten Sprache senden.",
+  "translation_translateTo": "Übersetzen Sie auf {language}",
+  "translation_translationOptions": "Übersetzungsmöglichkeiten",
+  "translation_systemLanguage": "Sprache des Systems"
 }
diff --git a/lib/l10n/app_en.arb b/lib/l10n/app_en.arb
index d8d73ab..0617553 100644
--- a/lib/l10n/app_en.arb
+++ b/lib/l10n/app_en.arb
@@ -2042,6 +2042,35 @@
   "radioStats_stripWaiting": "Fetching radio stats…",
   "radioStats_settingsTile": "Radio stats",
   "radioStats_settingsSubtitle": "Noise floor, RSSI, SNR, and airtime",
+
+  "translation_title": "Translation",
+  "translation_enableTitle": "Enable translation",
+  "translation_enableSubtitle": "Translate incoming messages and allow pre-send translation.",
+  "translation_composerTitle": "Translate before sending",
+  "translation_composerSubtitle": "Controls the default state of the composer translation icon.",
+  "translation_targetLanguage": "Target language",
+  "translation_useAppLanguage": "Use app language",
+  "translation_downloadedModelLabel": "Downloaded model",
+  "translation_presetModelLabel": "Preset Hugging Face model",
+  "translation_manualUrlLabel": "Manual model URL",
+  "translation_downloadModel": "Download model",
+  "translation_downloading": "Downloading...",
+  "translation_working": "Working...",
+  "translation_stop": "Stop",
+  "translation_mergingChunks": "Merging downloaded chunks into final file...",
+  "translation_downloadedModels": "Downloaded models",
+  "translation_deleteModel": "Delete model",
+  "translation_modelDownloaded": "Translation model downloaded.",
+  "translation_downloadStopped": "Download stopped.",
+  "translation_downloadFailed": "Download failed: {error}",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enterUrlFirst": "Enter a model URL first.",
   "scanner_linuxPairingShowPin": "Show PIN",
   "scanner_linuxPairingHidePin": "Hide PIN",
   "scanner_linuxPairingPinTitle": "Bluetooth Pairing PIN",
@@ -2052,5 +2081,19 @@
         "type": "String"
       }
     }
-  }
-}
\ No newline at end of file
+  },
+  "translation_messageTranslation": "Message translation",
+  "translation_translateBeforeSending": "Translate before sending",
+  "translation_composerEnabledHint": "Messages will be translated before send.",
+  "translation_composerDisabledHint": "Send messages in the original typed language.",
+  "translation_translateTo": "Translate to {language}",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_translationOptions": "Translation options",
+  "translation_systemLanguage": "System language"
+}
diff --git a/lib/l10n/app_es.arb b/lib/l10n/app_es.arb
index 245f732..4d465bb 100644
--- a/lib/l10n/app_es.arb
+++ b/lib/l10n/app_es.arb
@@ -2035,6 +2035,34 @@
   "radioStats_stripWaiting": "Obteniendo estadísticas de la radio…",
   "radioStats_settingsTile": "Estadísticas de radio",
   "radioStats_settingsSubtitle": "Nivel de ruido, RSSI, SNR y tiempo de transmisión",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_title": "Traducción",
+  "translation_enableSubtitle": "Traducir los mensajes entrantes y permitir la traducción previa al envío.",
+  "translation_enableTitle": "Habilitar la traducción",
+  "translation_composerTitle": "Traducir antes de enviar",
+  "translation_composerSubtitle": "Controla el estado predeterminado del icono de traducción del compositor.",
+  "translation_targetLanguage": "Idioma de destino",
+  "translation_useAppLanguage": "Utilizar el idioma de la aplicación",
+  "translation_downloadedModelLabel": "Modelo descargado",
+  "translation_presetModelLabel": "Modelo predefinido de Hugging Face",
+  "translation_manualUrlLabel": "URL del modelo manual",
+  "translation_downloadModel": "Descargar el modelo",
+  "translation_downloading": "Descargando...",
+  "translation_working": "Trabajando...",
+  "translation_stop": "¡Detente!",
+  "translation_mergingChunks": "Combinando los fragmentos descargados en el archivo final...",
+  "translation_downloadedModels": "Modelos descargados",
+  "translation_deleteModel": "Eliminar modelo",
+  "translation_modelDownloaded": "Modelo de traducción descargado.",
+  "translation_downloadStopped": "La descarga se ha detenido.",
+  "translation_downloadFailed": "No se pudo descargar: {error}",
+  "translation_enterUrlFirst": "Primero, introduzca la URL del modelo.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2042,8 +2070,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "Mostrar PIN",
-  "scanner_linuxPairingPinTitle": "PIN de emparejamiento Bluetooth",
+  "scanner_linuxPairingPinPrompt": "Introduzca el código PIN para {deviceName} (deje en blanco si no hay ninguno).",
+  "scanner_linuxPairingShowPin": "Mostrar código PIN",
+  "scanner_linuxPairingPinTitle": "PIN para emparejar dispositivos Bluetooth",
   "scanner_linuxPairingHidePin": "Ocultar PIN",
-  "scanner_linuxPairingPinPrompt": "Introduzca el PIN para {deviceName} (déjelo en blanco si no hay ninguno)."
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerDisabledHint": "Envía mensajes utilizando el lenguaje escrito original.",
+  "translation_composerEnabledHint": "Los mensajes serán traducidos antes de ser enviados.",
+  "translation_messageTranslation": "Traducción del mensaje",
+  "translation_translateBeforeSending": "Traducir antes de enviar",
+  "translation_translateTo": "Traducir a {language}",
+  "translation_translationOptions": "Opciones de traducción",
+  "translation_systemLanguage": "Idioma del sistema"
 }
diff --git a/lib/l10n/app_fr.arb b/lib/l10n/app_fr.arb
index a8b2c8f..16e1d3d 100644
--- a/lib/l10n/app_fr.arb
+++ b/lib/l10n/app_fr.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Récupération des statistiques de la radio…",
   "radioStats_settingsTile": "Statistiques de radio",
   "radioStats_settingsSubtitle": "Niveau de bruit, RSSI, rapport signal/bruit (SNR) et temps d'antenne",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerTitle": "Traduire avant d'envoyer",
+  "translation_enableTitle": "Activer la traduction",
+  "translation_title": "Traduction",
+  "translation_enableSubtitle": "Traduire les messages entrants et permettre la traduction avant l'envoi.",
+  "translation_composerSubtitle": "Contrôle l'état par défaut de l'icône de traduction du composant.",
+  "translation_targetLanguage": "Langue cible",
+  "translation_useAppLanguage": "Utiliser la langue de l'application",
+  "translation_downloadedModelLabel": "Modèle téléchargé",
+  "translation_presetModelLabel": "Modèle Hugging Face préconfiguré",
+  "translation_manualUrlLabel": "URL du modèle manuel",
+  "translation_downloadModel": "Télécharger le modèle",
+  "translation_downloading": "Téléchargement...",
+  "translation_working": "Au travail...",
+  "translation_stop": "Arrêtez",
+  "translation_mergingChunks": "Fusion des fragments téléchargés dans le fichier final...",
+  "translation_downloadedModels": "Modèles téléchargés",
+  "translation_deleteModel": "Supprimer le modèle",
+  "translation_modelDownloaded": "Modèle de traduction téléchargé.",
+  "translation_downloadStopped": "Le téléchargement a été interrompu.",
+  "translation_downloadFailed": "Échec du téléchargement : {error}",
+  "translation_enterUrlFirst": "Entrez d'abord l'URL du modèle.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "Afficher le code PIN",
+  "scanner_linuxPairingPinTitle": "Code PIN pour la connexion Bluetooth",
   "scanner_linuxPairingHidePin": "Masquer le code PIN",
-  "scanner_linuxPairingPinTitle": "Code PIN d’appairage Bluetooth",
-  "scanner_linuxPairingPinPrompt": "Entrez le code PIN pour {deviceName} (laissez vide si aucun)."
+  "scanner_linuxPairingPinPrompt": "Entrez le code PIN pour {deviceName} (laissez vide si nécessaire).",
+  "scanner_linuxPairingShowPin": "Afficher le code PIN",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerEnabledHint": "Les messages seront traduits avant d'être envoyés.",
+  "translation_translateBeforeSending": "Traduire avant d'envoyer",
+  "translation_composerDisabledHint": "Envoyez des messages dans la langue originale, telle que vous l'avez tapée.",
+  "translation_messageTranslation": "Traduction du message",
+  "translation_translateTo": "Traduire en {language}",
+  "translation_translationOptions": "Options de traduction",
+  "translation_systemLanguage": "Langue du système"
 }
diff --git a/lib/l10n/app_hu.arb b/lib/l10n/app_hu.arb
index dc96020..cf42e1b 100644
--- a/lib/l10n/app_hu.arb
+++ b/lib/l10n/app_hu.arb
@@ -2045,6 +2045,34 @@
   "contact_teleEnvSubtitle": "Engedje meg az érzékelő adatok megosztását",
   "map_showOverlaps": "Az ismétlő kulcsok ütköznek",
   "map_runTraceWithReturnPath": "Visszaforduljon az eredeti úton.",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_title": "Fordítás",
+  "translation_enableTitle": "Engedje meg a fordítást",
+  "translation_enableSubtitle": "Fordítsa az érkező üzeneteket, és lehetővé tegye a küldés előtti fordítást.",
+  "translation_composerTitle": "Fordítsa el, mielőtt elküldi",
+  "translation_composerSubtitle": "Ellenőrzi a zeneszerző fordítási ikon alapértékét.",
+  "translation_targetLanguage": "Célnyelv",
+  "translation_useAppLanguage": "Használja az alkalmazás nyelvének beállítását.",
+  "translation_downloadedModelLabel": "Letöltött modell",
+  "translation_presetModelLabel": "Előre definiált Hugging Face-modell",
+  "translation_manualUrlLabel": "Manuális modell URL",
+  "translation_downloadModel": "Letöltés",
+  "translation_downloading": "Letöltés...",
+  "translation_working": "Munkában vagyok...",
+  "translation_stop": "Halt",
+  "translation_mergingChunks": "A letöltött részek összeállítása a végleges fájlba...",
+  "translation_downloadedModels": "Letöltött modelok",
+  "translation_deleteModel": "Törölje a modellt",
+  "translation_modelDownloaded": "Fordítási modell letöltve.",
+  "translation_downloadStopped": "A letöltés leállt.",
+  "translation_downloadFailed": "Letöltés sikertelen: {error}",
+  "translation_enterUrlFirst": "Addon először egy modell URL-t.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2052,8 +2080,22 @@
       }
     }
   },
-  "scanner_linuxPairingHidePin": "PIN elrejtése",
-  "scanner_linuxPairingShowPin": "PIN megjelenítése",
+  "scanner_linuxPairingShowPin": "Megjelenítse a PIN-kódot",
+  "scanner_linuxPairingPinPrompt": "Adja meg a PIN kódot a {deviceName} számára (hagyja üresen, ha nincs).",
+  "scanner_linuxPairingHidePin": "Rejtse el a PIN-kódot",
   "scanner_linuxPairingPinTitle": "Bluetooth párosítási PIN",
-  "scanner_linuxPairingPinPrompt": "Adja meg a(z) {deviceName} PIN-kódját (hagyja üresen, ha nincs)."
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_translateBeforeSending": "Fordítsa el, mielőtt elküldi",
+  "translation_composerEnabledHint": "A üzenetek fordítását a küldés előtt elvégezzük.",
+  "translation_messageTranslation": "Üzenet fordítása",
+  "translation_composerDisabledHint": "Küldj üzeneteket az eredeti, nyomtatott nyelven.",
+  "translation_translateTo": "Fordítás {language}-ra",
+  "translation_translationOptions": "Fordítási lehetőségek",
+  "translation_systemLanguage": "Rendszer nyelvé"
 }
diff --git a/lib/l10n/app_it.arb b/lib/l10n/app_it.arb
index 13a9602..b9676bb 100644
--- a/lib/l10n/app_it.arb
+++ b/lib/l10n/app_it.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Recupero delle statistiche radio…",
   "radioStats_settingsTile": "Statistiche radio",
   "radioStats_settingsSubtitle": "Livello di rumore, RSSI, rapporto segnale/rumore (SNR) e tempo di trasmissione",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerTitle": "Tradurre prima di inviare",
+  "translation_enableSubtitle": "Tradurre i messaggi in arrivo e consentire la traduzione preventiva prima dell'invio.",
+  "translation_enableTitle": "Abilitare la traduzione",
+  "translation_title": "Traduzione",
+  "translation_composerSubtitle": "Controlla lo stato predefinito dell'icona di traduzione del compositore.",
+  "translation_targetLanguage": "Lingua di destinazione",
+  "translation_useAppLanguage": "Utilizza la lingua dell'app",
+  "translation_downloadedModelLabel": "Modello scaricato",
+  "translation_presetModelLabel": "Modello predefinito di Hugging Face",
+  "translation_manualUrlLabel": "URL del modello manuale",
+  "translation_downloadModel": "Scarica il modello",
+  "translation_downloading": "Inizio download...",
+  "translation_working": "Lavoro...",
+  "translation_stop": "Smetta",
+  "translation_downloadedModels": "Modelli scaricati",
+  "translation_mergingChunks": "Unione dei frammenti scaricati in un unico file...",
+  "translation_deleteModel": "Elimina modello",
+  "translation_modelDownloaded": "Modello di traduzione scaricato.",
+  "translation_downloadStopped": "Il download è stato interrotto.",
+  "translation_downloadFailed": "Download fallito: {error}",
+  "translation_enterUrlFirst": "Inserite innanzitutto l'URL del modello.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
+  "scanner_linuxPairingPinPrompt": "Inserire il codice PIN per {deviceName} (lasciare vuoto se non presente).",
   "scanner_linuxPairingShowPin": "Mostra PIN",
-  "scanner_linuxPairingHidePin": "Nascondi PIN",
-  "scanner_linuxPairingPinTitle": "PIN di associazione Bluetooth",
-  "scanner_linuxPairingPinPrompt": "Inserisci il PIN per {deviceName} (lascia vuoto se non ce n'è)."
+  "scanner_linuxPairingPinTitle": "PIN per l'accoppiamento Bluetooth",
+  "scanner_linuxPairingHidePin": "Nascondi il PIN",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_messageTranslation": "Traduzione del messaggio",
+  "translation_translateBeforeSending": "Tradurre prima di inviare",
+  "translation_composerDisabledHint": "Invia messaggi utilizzando la lingua originale, scritta.",
+  "translation_composerEnabledHint": "I messaggi verranno tradotti prima di essere inviati.",
+  "translation_translateTo": "Tradurre in {language}",
+  "translation_translationOptions": "Opzioni di traduzione",
+  "translation_systemLanguage": "Lingua del sistema"
 }
diff --git a/lib/l10n/app_ja.arb b/lib/l10n/app_ja.arb
index adb4eea..6a9c975 100644
--- a/lib/l10n/app_ja.arb
+++ b/lib/l10n/app_ja.arb
@@ -2045,6 +2045,34 @@
   "contact_teleEnvSubtitle": "環境センサーのデータを共有することを許可する",
   "map_showOverlaps": "リピーターキーの重複",
   "map_runTraceWithReturnPath": "元の経路に戻る。",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enableSubtitle": "受信メッセージを翻訳し、送信前に翻訳を適用できるようにする。",
+  "translation_title": "翻訳",
+  "translation_composerTitle": "送信する前に翻訳する",
+  "translation_enableTitle": "翻訳機能を有効にする",
+  "translation_composerSubtitle": "作曲家翻訳アイコンのデフォルト状態を制御する。",
+  "translation_targetLanguage": "翻訳対象言語",
+  "translation_useAppLanguage": "アプリの言語設定",
+  "translation_downloadedModelLabel": "ダウンロードしたモデル",
+  "translation_presetModelLabel": "あらかじめ設定されたHugging Faceモデル",
+  "translation_manualUrlLabel": "マニュアルモデルのURL",
+  "translation_downloadModel": "モデルのダウンロード",
+  "translation_downloading": "ダウンロード中...",
+  "translation_working": "業務中…",
+  "translation_stop": "停止",
+  "translation_mergingChunks": "ダウンロードしたファイルを最終ファイルに結合中...",
+  "translation_downloadedModels": "ダウンロードされたモデル",
+  "translation_deleteModel": "モデルを削除",
+  "translation_modelDownloaded": "翻訳モデルのダウンロードが完了しました。",
+  "translation_downloadStopped": "ダウンロードが中断されました。",
+  "translation_downloadFailed": "ダウンロードに失敗しました：{error}",
+  "translation_enterUrlFirst": "まず、モデルのURLを入力してください。",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2052,8 +2080,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "PINを表示",
-  "scanner_linuxPairingHidePin": "PINを非表示",
-  "scanner_linuxPairingPinTitle": "Bluetooth ペアリング PIN",
-  "scanner_linuxPairingPinPrompt": "{deviceName}のPINを入力してください（なしの場合は空欄のまま）。"
+  "scanner_linuxPairingShowPin": "PINを表示する",
+  "scanner_linuxPairingHidePin": "PINを非表示にする",
+  "scanner_linuxPairingPinPrompt": "{deviceName} の PIN を入力してください（該当しない場合は空白で入力）。",
+  "scanner_linuxPairingPinTitle": "Bluetooth 接続のためのPIN",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_translateBeforeSending": "送信する前に翻訳する",
+  "translation_composerEnabledHint": "メッセージは送信前に翻訳されます。",
+  "translation_messageTranslation": "メッセージの翻訳",
+  "translation_composerDisabledHint": "元のタイプされた言語でメッセージを送信してください。",
+  "translation_translateTo": "{language} への翻訳",
+  "translation_translationOptions": "翻訳の選択肢",
+  "translation_systemLanguage": "システム言語"
 }
diff --git a/lib/l10n/app_ko.arb b/lib/l10n/app_ko.arb
index 6bccc19..2050e3b 100644
--- a/lib/l10n/app_ko.arb
+++ b/lib/l10n/app_ko.arb
@@ -2045,6 +2045,34 @@
   "contact_teleEnvSubtitle": "환경 센서 데이터를 공유하도록 허용",
   "map_showOverlaps": "반복 키 중복",
   "map_runTraceWithReturnPath": "원래 경로로 돌아가세요.",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enableSubtitle": "입력 메시지를 번역하고, 미리 번역 기능을 제공합니다.",
+  "translation_title": "번역",
+  "translation_enableTitle": "번역 기능 활성화",
+  "translation_composerTitle": "보내기 전에 번역",
+  "translation_composerSubtitle": "컴포저 번역 아이콘의 기본 상태를 제어합니다.",
+  "translation_targetLanguage": "목표 언어",
+  "translation_useAppLanguage": "앱 언어 사용",
+  "translation_downloadedModelLabel": "다운로드한 모델",
+  "translation_presetModelLabel": "사전에 설정된 Hugging Face 모델",
+  "translation_manualUrlLabel": "수동 모델 URL",
+  "translation_downloadModel": "모델 다운로드",
+  "translation_downloading": "다운로드 중...",
+  "translation_working": "업무 중...",
+  "translation_stop": "멈춰",
+  "translation_mergingChunks": "다운로드한 파일 조각들을 최종 파일로 병합 중...",
+  "translation_downloadedModels": "다운로드한 모델",
+  "translation_deleteModel": "모델 삭제",
+  "translation_modelDownloaded": "번역 모델이 다운로드되었습니다.",
+  "translation_downloadStopped": "다운로드 중단됨.",
+  "translation_downloadFailed": "다운로드 실패: {error}",
+  "translation_enterUrlFirst": "먼저 모델 URL을 입력하세요.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2052,8 +2080,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "PIN 표시",
   "scanner_linuxPairingPinTitle": "블루투스 페어링 PIN",
   "scanner_linuxPairingHidePin": "PIN 숨기기",
-  "scanner_linuxPairingPinPrompt": "{deviceName}에 대한 PIN을 입력하세요 (없으면 비워두세요)."
+  "scanner_linuxPairingShowPin": "PIN 보기",
+  "scanner_linuxPairingPinPrompt": "{deviceName}의 PIN을 입력하세요 (해당하는 경우에만 입력).",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerEnabledHint": "메시지는 전송하기 전에 번역될 것입니다.",
+  "translation_translateBeforeSending": "보내기 전에 번역",
+  "translation_messageTranslation": "메시지 번역",
+  "translation_composerDisabledHint": "원래 작성된 언어로 메시지를 보내세요.",
+  "translation_translateTo": "{language} 번역",
+  "translation_translationOptions": "번역 옵션",
+  "translation_systemLanguage": "시스템 언어"
 }
diff --git a/lib/l10n/app_localizations.dart b/lib/l10n/app_localizations.dart
index db787b3..d2d4040 100644
--- a/lib/l10n/app_localizations.dart
+++ b/lib/l10n/app_localizations.dart
@@ -6148,30 +6148,6 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Noise floor, RSSI, SNR, and airtime'**
   String get radioStats_settingsSubtitle;
-
-  /// No description provided for @scanner_linuxPairingShowPin.
-  ///
-  /// In en, this message translates to:
-  /// **'Show PIN'**
-  String get scanner_linuxPairingShowPin;
-
-  /// No description provided for @scanner_linuxPairingHidePin.
-  ///
-  /// In en, this message translates to:
-  /// **'Hide PIN'**
-  String get scanner_linuxPairingHidePin;
-
-  /// No description provided for @scanner_linuxPairingPinTitle.
-  ///
-  /// In en, this message translates to:
-  /// **'Bluetooth Pairing PIN'**
-  String get scanner_linuxPairingPinTitle;
-
-  /// No description provided for @scanner_linuxPairingPinPrompt.
-  ///
-  /// In en, this message translates to:
-  /// **'Enter PIN for {deviceName} (leave blank if none).'**
-  String scanner_linuxPairingPinPrompt(String deviceName);
 }
 
 class _AppLocalizationsDelegate
diff --git a/lib/l10n/app_localizations_bg.dart b/lib/l10n/app_localizations_bg.dart
index 2909278..283860e 100644
--- a/lib/l10n/app_localizations_bg.dart
+++ b/lib/l10n/app_localizations_bg.dart
@@ -3568,18 +3568,112 @@ class AppLocalizationsBg extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Ниво на шума, RSSI, SNR и време на пренос';
 
+  @override
+  String get translation_title => 'Превод';
+
+  @override
+  String get translation_enableTitle => 'Активирайте превода';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Превеждайте входящите съобщения и позволявайте предварително превеждане преди изпращане.';
+
+  @override
+  String get translation_composerTitle => 'Преведете преди да изпратите';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Контролира началния статус на иконата за превод, създадена от композитора.';
+
+  @override
+  String get translation_targetLanguage => 'Целеви език';
+
+  @override
+  String get translation_useAppLanguage => 'Използвайте езика на приложението';
+
+  @override
+  String get translation_downloadedModelLabel => 'Изтегнат модел';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Предварително конфигуриран модел от Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel => 'URL на ръководството';
+
+  @override
+  String get translation_downloadModel => 'Изтеглете модела';
+
+  @override
+  String get translation_downloading => 'Изтегляне...';
+
+  @override
+  String get translation_working => 'Работа...';
+
+  @override
+  String get translation_stop => 'Спрете';
+
+  @override
+  String get translation_mergingChunks =>
+      'Съединяване на изтеглените части в един файл...';
+
+  @override
+  String get translation_downloadedModels => 'Изтеглени модели';
+
+  @override
+  String get translation_deleteModel => 'Изтриване на модела';
+
+  @override
+  String get translation_modelDownloaded => 'Моделът за превод е изтеглен.';
+
+  @override
+  String get translation_downloadStopped => 'Изтеглянето беше прекъснато.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Не успях да изтегля: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Въведете първо URL адрес на модела.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Покажи PIN';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Скрий ПИН';
+  String get scanner_linuxPairingHidePin => 'Скриване на PIN кода';
 
   @override
-  String get scanner_linuxPairingPinTitle =>
-      'PIN код за сдвояване на Bluetooth';
+  String get scanner_linuxPairingPinTitle => 'PIN за съвпадение чрез Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Въведете ПИН за $deviceName (оставете празно, ако няма).';
+    return 'Въведете PIN кода за $deviceName (оставете празно, ако няма такъв).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Превод на съобщението';
+
+  @override
+  String get translation_translateBeforeSending =>
+      'Преведете преди да изпратите';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Съобщенията ще бъдат преведени, преди да бъдат изпратени.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Изпращайте съобщения на оригиналния въведен език.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Превеждане на $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Опции за превод';
+
+  @override
+  String get translation_systemLanguage => 'Език на системата';
 }
diff --git a/lib/l10n/app_localizations_de.dart b/lib/l10n/app_localizations_de.dart
index 4afefde..e29ae9e 100644
--- a/lib/l10n/app_localizations_de.dart
+++ b/lib/l10n/app_localizations_de.dart
@@ -3577,17 +3577,114 @@ class AppLocalizationsDe extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Rauschpegel, RSSI, Signal-Rausch-Verhältnis (SNR) und Nutzzeit';
 
+  @override
+  String get translation_title => 'Übersetzung';
+
+  @override
+  String get translation_enableTitle => 'Aktivieren Sie die Übersetzung';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Nachrichten empfangen und übersetzen sowie die Möglichkeit bieten, Nachrichten vor dem Versenden zu übersetzen.';
+
+  @override
+  String get translation_composerTitle => 'Übersetzen Sie vor dem Versenden';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Steuert den Standardzustand des Icons für die Übersetzung des Komponisten.';
+
+  @override
+  String get translation_targetLanguage => 'Zielsprache';
+
+  @override
+  String get translation_useAppLanguage => 'Verwenden Sie die App-Sprache';
+
+  @override
+  String get translation_downloadedModelLabel => 'Heruntergeladenes Modell';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Vordefinierter Hugging Face-Modell';
+
+  @override
+  String get translation_manualUrlLabel => 'URL für das manuelle Modell';
+
+  @override
+  String get translation_downloadModel => 'Modell herunterladen';
+
+  @override
+  String get translation_downloading => 'Herunterladen...';
+
+  @override
+  String get translation_working => 'Arbeiten...';
+
+  @override
+  String get translation_stop => 'Stopp';
+
+  @override
+  String get translation_mergingChunks =>
+      'Zusammenführen der heruntergeladenen Teile in die finale Datei...';
+
+  @override
+  String get translation_downloadedModels => 'Heruntergeladene Modelle';
+
+  @override
+  String get translation_deleteModel => 'Modell löschen';
+
+  @override
+  String get translation_modelDownloaded =>
+      'Übersetzungsmotor heruntergeladen.';
+
+  @override
+  String get translation_downloadStopped => 'Herunterladen abgebrochen.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Download fehlgeschlagen: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst =>
+      'Geben Sie zunächst die URL eines Modells ein.';
+
   @override
   String get scanner_linuxPairingShowPin => 'PIN anzeigen';
 
   @override
-  String get scanner_linuxPairingHidePin => 'PIN ausblenden';
+  String get scanner_linuxPairingHidePin => 'PIN verbergen';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Bluetooth-Paarungs-PIN';
+  String get scanner_linuxPairingPinTitle => 'PIN für die Bluetooth-Verbindung';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Geben Sie die PIN für $deviceName ein (leer lassen, falls keine).';
+    return 'Geben Sie den PIN-Code für $deviceName ein (lassen Sie das Feld leer, falls kein PIN-Code vorhanden ist).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Nachricht übersetzen';
+
+  @override
+  String get translation_translateBeforeSending =>
+      'Übersetzen Sie vor dem Versenden';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Die Nachrichten werden vor dem Versenden übersetzt.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Nachrichten in der ursprünglichen, getippten Sprache senden.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Übersetzen Sie auf $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Übersetzungsmöglichkeiten';
+
+  @override
+  String get translation_systemLanguage => 'Sprache des Systems';
 }
diff --git a/lib/l10n/app_localizations_en.dart b/lib/l10n/app_localizations_en.dart
index a420a55..877e11d 100644
--- a/lib/l10n/app_localizations_en.dart
+++ b/lib/l10n/app_localizations_en.dart
@@ -3502,6 +3502,74 @@ class AppLocalizationsEn extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Noise floor, RSSI, SNR, and airtime';
 
+  @override
+  String get translation_title => 'Translation';
+
+  @override
+  String get translation_enableTitle => 'Enable translation';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Translate incoming messages and allow pre-send translation.';
+
+  @override
+  String get translation_composerTitle => 'Translate before sending';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Controls the default state of the composer translation icon.';
+
+  @override
+  String get translation_targetLanguage => 'Target language';
+
+  @override
+  String get translation_useAppLanguage => 'Use app language';
+
+  @override
+  String get translation_downloadedModelLabel => 'Downloaded model';
+
+  @override
+  String get translation_presetModelLabel => 'Preset Hugging Face model';
+
+  @override
+  String get translation_manualUrlLabel => 'Manual model URL';
+
+  @override
+  String get translation_downloadModel => 'Download model';
+
+  @override
+  String get translation_downloading => 'Downloading...';
+
+  @override
+  String get translation_working => 'Working...';
+
+  @override
+  String get translation_stop => 'Stop';
+
+  @override
+  String get translation_mergingChunks =>
+      'Merging downloaded chunks into final file...';
+
+  @override
+  String get translation_downloadedModels => 'Downloaded models';
+
+  @override
+  String get translation_deleteModel => 'Delete model';
+
+  @override
+  String get translation_modelDownloaded => 'Translation model downloaded.';
+
+  @override
+  String get translation_downloadStopped => 'Download stopped.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Download failed: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Enter a model URL first.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Show PIN';
 
@@ -3515,4 +3583,29 @@ class AppLocalizationsEn extends AppLocalizations {
   String scanner_linuxPairingPinPrompt(String deviceName) {
     return 'Enter PIN for $deviceName (leave blank if none).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Message translation';
+
+  @override
+  String get translation_translateBeforeSending => 'Translate before sending';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Messages will be translated before send.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Send messages in the original typed language.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Translate to $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Translation options';
+
+  @override
+  String get translation_systemLanguage => 'System language';
 }
diff --git a/lib/l10n/app_localizations_es.dart b/lib/l10n/app_localizations_es.dart
index 93a8bc9..c963902 100644
--- a/lib/l10n/app_localizations_es.dart
+++ b/lib/l10n/app_localizations_es.dart
@@ -3571,16 +3571,113 @@ class AppLocalizationsEs extends AppLocalizations {
       'Nivel de ruido, RSSI, SNR y tiempo de transmisión';
 
   @override
-  String get scanner_linuxPairingShowPin => 'Mostrar PIN';
+  String get translation_title => 'Traducción';
+
+  @override
+  String get translation_enableTitle => 'Habilitar la traducción';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Traducir los mensajes entrantes y permitir la traducción previa al envío.';
+
+  @override
+  String get translation_composerTitle => 'Traducir antes de enviar';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Controla el estado predeterminado del icono de traducción del compositor.';
+
+  @override
+  String get translation_targetLanguage => 'Idioma de destino';
+
+  @override
+  String get translation_useAppLanguage =>
+      'Utilizar el idioma de la aplicación';
+
+  @override
+  String get translation_downloadedModelLabel => 'Modelo descargado';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Modelo predefinido de Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel => 'URL del modelo manual';
+
+  @override
+  String get translation_downloadModel => 'Descargar el modelo';
+
+  @override
+  String get translation_downloading => 'Descargando...';
+
+  @override
+  String get translation_working => 'Trabajando...';
+
+  @override
+  String get translation_stop => '¡Detente!';
+
+  @override
+  String get translation_mergingChunks =>
+      'Combinando los fragmentos descargados en el archivo final...';
+
+  @override
+  String get translation_downloadedModels => 'Modelos descargados';
+
+  @override
+  String get translation_deleteModel => 'Eliminar modelo';
+
+  @override
+  String get translation_modelDownloaded => 'Modelo de traducción descargado.';
+
+  @override
+  String get translation_downloadStopped => 'La descarga se ha detenido.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'No se pudo descargar: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst =>
+      'Primero, introduzca la URL del modelo.';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'Mostrar código PIN';
 
   @override
   String get scanner_linuxPairingHidePin => 'Ocultar PIN';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'PIN de emparejamiento Bluetooth';
+  String get scanner_linuxPairingPinTitle =>
+      'PIN para emparejar dispositivos Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Introduzca el PIN para $deviceName (déjelo en blanco si no hay ninguno).';
+    return 'Introduzca el código PIN para $deviceName (deje en blanco si no hay ninguno).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Traducción del mensaje';
+
+  @override
+  String get translation_translateBeforeSending => 'Traducir antes de enviar';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Los mensajes serán traducidos antes de ser enviados.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Envía mensajes utilizando el lenguaje escrito original.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Traducir a $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Opciones de traducción';
+
+  @override
+  String get translation_systemLanguage => 'Idioma del sistema';
 }
diff --git a/lib/l10n/app_localizations_fr.dart b/lib/l10n/app_localizations_fr.dart
index 5d0d90c..eea88f5 100644
--- a/lib/l10n/app_localizations_fr.dart
+++ b/lib/l10n/app_localizations_fr.dart
@@ -3595,6 +3595,76 @@ class AppLocalizationsFr extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Niveau de bruit, RSSI, rapport signal/bruit (SNR) et temps d\'antenne';
 
+  @override
+  String get translation_title => 'Traduction';
+
+  @override
+  String get translation_enableTitle => 'Activer la traduction';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Traduire les messages entrants et permettre la traduction avant l\'envoi.';
+
+  @override
+  String get translation_composerTitle => 'Traduire avant d\'envoyer';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Contrôle l\'état par défaut de l\'icône de traduction du composant.';
+
+  @override
+  String get translation_targetLanguage => 'Langue cible';
+
+  @override
+  String get translation_useAppLanguage =>
+      'Utiliser la langue de l\'application';
+
+  @override
+  String get translation_downloadedModelLabel => 'Modèle téléchargé';
+
+  @override
+  String get translation_presetModelLabel => 'Modèle Hugging Face préconfiguré';
+
+  @override
+  String get translation_manualUrlLabel => 'URL du modèle manuel';
+
+  @override
+  String get translation_downloadModel => 'Télécharger le modèle';
+
+  @override
+  String get translation_downloading => 'Téléchargement...';
+
+  @override
+  String get translation_working => 'Au travail...';
+
+  @override
+  String get translation_stop => 'Arrêtez';
+
+  @override
+  String get translation_mergingChunks =>
+      'Fusion des fragments téléchargés dans le fichier final...';
+
+  @override
+  String get translation_downloadedModels => 'Modèles téléchargés';
+
+  @override
+  String get translation_deleteModel => 'Supprimer le modèle';
+
+  @override
+  String get translation_modelDownloaded => 'Modèle de traduction téléchargé.';
+
+  @override
+  String get translation_downloadStopped =>
+      'Le téléchargement a été interrompu.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Échec du téléchargement : $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Entrez d\'abord l\'URL du modèle.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Afficher le code PIN';
 
@@ -3602,10 +3672,36 @@ class AppLocalizationsFr extends AppLocalizations {
   String get scanner_linuxPairingHidePin => 'Masquer le code PIN';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Code PIN d’appairage Bluetooth';
+  String get scanner_linuxPairingPinTitle =>
+      'Code PIN pour la connexion Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Entrez le code PIN pour $deviceName (laissez vide si aucun).';
+    return 'Entrez le code PIN pour $deviceName (laissez vide si nécessaire).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Traduction du message';
+
+  @override
+  String get translation_translateBeforeSending => 'Traduire avant d\'envoyer';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Les messages seront traduits avant d\'être envoyés.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Envoyez des messages dans la langue originale, telle que vous l\'avez tapée.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Traduire en $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Options de traduction';
+
+  @override
+  String get translation_systemLanguage => 'Langue du système';
 }
diff --git a/lib/l10n/app_localizations_hu.dart b/lib/l10n/app_localizations_hu.dart
index dc6374a..5e36e94 100644
--- a/lib/l10n/app_localizations_hu.dart
+++ b/lib/l10n/app_localizations_hu.dart
@@ -3588,16 +3588,112 @@ class AppLocalizationsHu extends AppLocalizations {
       'Háttérzaj, RSSI, zaj-sűrűség, és a használat időtartama';
 
   @override
-  String get scanner_linuxPairingShowPin => 'PIN megjelenítése';
+  String get translation_title => 'Fordítás';
 
   @override
-  String get scanner_linuxPairingHidePin => 'PIN elrejtése';
+  String get translation_enableTitle => 'Engedje meg a fordítást';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Fordítsa az érkező üzeneteket, és lehetővé tegye a küldés előtti fordítást.';
+
+  @override
+  String get translation_composerTitle => 'Fordítsa el, mielőtt elküldi';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Ellenőrzi a zeneszerző fordítási ikon alapértékét.';
+
+  @override
+  String get translation_targetLanguage => 'Célnyelv';
+
+  @override
+  String get translation_useAppLanguage =>
+      'Használja az alkalmazás nyelvének beállítását.';
+
+  @override
+  String get translation_downloadedModelLabel => 'Letöltött modell';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Előre definiált Hugging Face-modell';
+
+  @override
+  String get translation_manualUrlLabel => 'Manuális modell URL';
+
+  @override
+  String get translation_downloadModel => 'Letöltés';
+
+  @override
+  String get translation_downloading => 'Letöltés...';
+
+  @override
+  String get translation_working => 'Munkában vagyok...';
+
+  @override
+  String get translation_stop => 'Halt';
+
+  @override
+  String get translation_mergingChunks =>
+      'A letöltött részek összeállítása a végleges fájlba...';
+
+  @override
+  String get translation_downloadedModels => 'Letöltött modelok';
+
+  @override
+  String get translation_deleteModel => 'Törölje a modellt';
+
+  @override
+  String get translation_modelDownloaded => 'Fordítási modell letöltve.';
+
+  @override
+  String get translation_downloadStopped => 'A letöltés leállt.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Letöltés sikertelen: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Addon először egy modell URL-t.';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'Megjelenítse a PIN-kódot';
+
+  @override
+  String get scanner_linuxPairingHidePin => 'Rejtse el a PIN-kódot';
 
   @override
   String get scanner_linuxPairingPinTitle => 'Bluetooth párosítási PIN';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Adja meg a(z) $deviceName PIN-kódját (hagyja üresen, ha nincs).';
+    return 'Adja meg a PIN kódot a $deviceName számára (hagyja üresen, ha nincs).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Üzenet fordítása';
+
+  @override
+  String get translation_translateBeforeSending =>
+      'Fordítsa el, mielőtt elküldi';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'A üzenetek fordítását a küldés előtt elvégezzük.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Küldj üzeneteket az eredeti, nyomtatott nyelven.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Fordítás $language-ra';
+  }
+
+  @override
+  String get translation_translationOptions => 'Fordítási lehetőségek';
+
+  @override
+  String get translation_systemLanguage => 'Rendszer nyelvé';
 }
diff --git a/lib/l10n/app_localizations_it.dart b/lib/l10n/app_localizations_it.dart
index 3fc5e56..bb9e0d2 100644
--- a/lib/l10n/app_localizations_it.dart
+++ b/lib/l10n/app_localizations_it.dart
@@ -3574,17 +3574,113 @@ class AppLocalizationsIt extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Livello di rumore, RSSI, rapporto segnale/rumore (SNR) e tempo di trasmissione';
 
+  @override
+  String get translation_title => 'Traduzione';
+
+  @override
+  String get translation_enableTitle => 'Abilitare la traduzione';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Tradurre i messaggi in arrivo e consentire la traduzione preventiva prima dell\'invio.';
+
+  @override
+  String get translation_composerTitle => 'Tradurre prima di inviare';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Controlla lo stato predefinito dell\'icona di traduzione del compositore.';
+
+  @override
+  String get translation_targetLanguage => 'Lingua di destinazione';
+
+  @override
+  String get translation_useAppLanguage => 'Utilizza la lingua dell\'app';
+
+  @override
+  String get translation_downloadedModelLabel => 'Modello scaricato';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Modello predefinito di Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel => 'URL del modello manuale';
+
+  @override
+  String get translation_downloadModel => 'Scarica il modello';
+
+  @override
+  String get translation_downloading => 'Inizio download...';
+
+  @override
+  String get translation_working => 'Lavoro...';
+
+  @override
+  String get translation_stop => 'Smetta';
+
+  @override
+  String get translation_mergingChunks =>
+      'Unione dei frammenti scaricati in un unico file...';
+
+  @override
+  String get translation_downloadedModels => 'Modelli scaricati';
+
+  @override
+  String get translation_deleteModel => 'Elimina modello';
+
+  @override
+  String get translation_modelDownloaded => 'Modello di traduzione scaricato.';
+
+  @override
+  String get translation_downloadStopped => 'Il download è stato interrotto.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Download fallito: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst =>
+      'Inserite innanzitutto l\'URL del modello.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Mostra PIN';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Nascondi PIN';
+  String get scanner_linuxPairingHidePin => 'Nascondi il PIN';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'PIN di associazione Bluetooth';
+  String get scanner_linuxPairingPinTitle =>
+      'PIN per l\'accoppiamento Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Inserisci il PIN per $deviceName (lascia vuoto se non ce n\'è).';
+    return 'Inserire il codice PIN per $deviceName (lasciare vuoto se non presente).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Traduzione del messaggio';
+
+  @override
+  String get translation_translateBeforeSending => 'Tradurre prima di inviare';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'I messaggi verranno tradotti prima di essere inviati.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Invia messaggi utilizzando la lingua originale, scritta.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Tradurre in $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Opzioni di traduzione';
+
+  @override
+  String get translation_systemLanguage => 'Lingua del sistema';
 }
diff --git a/lib/l10n/app_localizations_ja.dart b/lib/l10n/app_localizations_ja.dart
index 03d70d4..5151ab8 100644
--- a/lib/l10n/app_localizations_ja.dart
+++ b/lib/l10n/app_localizations_ja.dart
@@ -3403,16 +3403,104 @@ class AppLocalizationsJa extends AppLocalizations {
   String get radioStats_settingsSubtitle => 'ノイズレベル、RSSI、SNR、および通信時間';
 
   @override
-  String get scanner_linuxPairingShowPin => 'PINを表示';
+  String get translation_title => '翻訳';
 
   @override
-  String get scanner_linuxPairingHidePin => 'PINを非表示';
+  String get translation_enableTitle => '翻訳機能を有効にする';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Bluetooth ペアリング PIN';
+  String get translation_enableSubtitle => '受信メッセージを翻訳し、送信前に翻訳を適用できるようにする。';
+
+  @override
+  String get translation_composerTitle => '送信する前に翻訳する';
+
+  @override
+  String get translation_composerSubtitle => '作曲家翻訳アイコンのデフォルト状態を制御する。';
+
+  @override
+  String get translation_targetLanguage => '翻訳対象言語';
+
+  @override
+  String get translation_useAppLanguage => 'アプリの言語設定';
+
+  @override
+  String get translation_downloadedModelLabel => 'ダウンロードしたモデル';
+
+  @override
+  String get translation_presetModelLabel => 'あらかじめ設定されたHugging Faceモデル';
+
+  @override
+  String get translation_manualUrlLabel => 'マニュアルモデルのURL';
+
+  @override
+  String get translation_downloadModel => 'モデルのダウンロード';
+
+  @override
+  String get translation_downloading => 'ダウンロード中...';
+
+  @override
+  String get translation_working => '業務中…';
+
+  @override
+  String get translation_stop => '停止';
+
+  @override
+  String get translation_mergingChunks => 'ダウンロードしたファイルを最終ファイルに結合中...';
+
+  @override
+  String get translation_downloadedModels => 'ダウンロードされたモデル';
+
+  @override
+  String get translation_deleteModel => 'モデルを削除';
+
+  @override
+  String get translation_modelDownloaded => '翻訳モデルのダウンロードが完了しました。';
+
+  @override
+  String get translation_downloadStopped => 'ダウンロードが中断されました。';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'ダウンロードに失敗しました：$error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'まず、モデルのURLを入力してください。';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'PINを表示する';
+
+  @override
+  String get scanner_linuxPairingHidePin => 'PINを非表示にする';
+
+  @override
+  String get scanner_linuxPairingPinTitle => 'Bluetooth 接続のためのPIN';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return '$deviceNameのPINを入力してください（なしの場合は空欄のまま）。';
+    return '$deviceName の PIN を入力してください（該当しない場合は空白で入力）。';
   }
+
+  @override
+  String get translation_messageTranslation => 'メッセージの翻訳';
+
+  @override
+  String get translation_translateBeforeSending => '送信する前に翻訳する';
+
+  @override
+  String get translation_composerEnabledHint => 'メッセージは送信前に翻訳されます。';
+
+  @override
+  String get translation_composerDisabledHint => '元のタイプされた言語でメッセージを送信してください。';
+
+  @override
+  String translation_translateTo(String language) {
+    return '$language への翻訳';
+  }
+
+  @override
+  String get translation_translationOptions => '翻訳の選択肢';
+
+  @override
+  String get translation_systemLanguage => 'システム言語';
 }
diff --git a/lib/l10n/app_localizations_ko.dart b/lib/l10n/app_localizations_ko.dart
index 5e5925f..be64545 100644
--- a/lib/l10n/app_localizations_ko.dart
+++ b/lib/l10n/app_localizations_ko.dart
@@ -3402,7 +3402,72 @@ class AppLocalizationsKo extends AppLocalizations {
   String get radioStats_settingsSubtitle => '잡음 수준, RSSI, 신호 대 잡음비, 통신 시간';
 
   @override
-  String get scanner_linuxPairingShowPin => 'PIN 표시';
+  String get translation_title => '번역';
+
+  @override
+  String get translation_enableTitle => '번역 기능 활성화';
+
+  @override
+  String get translation_enableSubtitle => '입력 메시지를 번역하고, 미리 번역 기능을 제공합니다.';
+
+  @override
+  String get translation_composerTitle => '보내기 전에 번역';
+
+  @override
+  String get translation_composerSubtitle => '컴포저 번역 아이콘의 기본 상태를 제어합니다.';
+
+  @override
+  String get translation_targetLanguage => '목표 언어';
+
+  @override
+  String get translation_useAppLanguage => '앱 언어 사용';
+
+  @override
+  String get translation_downloadedModelLabel => '다운로드한 모델';
+
+  @override
+  String get translation_presetModelLabel => '사전에 설정된 Hugging Face 모델';
+
+  @override
+  String get translation_manualUrlLabel => '수동 모델 URL';
+
+  @override
+  String get translation_downloadModel => '모델 다운로드';
+
+  @override
+  String get translation_downloading => '다운로드 중...';
+
+  @override
+  String get translation_working => '업무 중...';
+
+  @override
+  String get translation_stop => '멈춰';
+
+  @override
+  String get translation_mergingChunks => '다운로드한 파일 조각들을 최종 파일로 병합 중...';
+
+  @override
+  String get translation_downloadedModels => '다운로드한 모델';
+
+  @override
+  String get translation_deleteModel => '모델 삭제';
+
+  @override
+  String get translation_modelDownloaded => '번역 모델이 다운로드되었습니다.';
+
+  @override
+  String get translation_downloadStopped => '다운로드 중단됨.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return '다운로드 실패: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => '먼저 모델 URL을 입력하세요.';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'PIN 보기';
 
   @override
   String get scanner_linuxPairingHidePin => 'PIN 숨기기';
@@ -3412,6 +3477,29 @@ class AppLocalizationsKo extends AppLocalizations {
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return '$deviceName에 대한 PIN을 입력하세요 (없으면 비워두세요).';
+    return '$deviceName의 PIN을 입력하세요 (해당하는 경우에만 입력).';
   }
+
+  @override
+  String get translation_messageTranslation => '메시지 번역';
+
+  @override
+  String get translation_translateBeforeSending => '보내기 전에 번역';
+
+  @override
+  String get translation_composerEnabledHint => '메시지는 전송하기 전에 번역될 것입니다.';
+
+  @override
+  String get translation_composerDisabledHint => '원래 작성된 언어로 메시지를 보내세요.';
+
+  @override
+  String translation_translateTo(String language) {
+    return '$language 번역';
+  }
+
+  @override
+  String get translation_translationOptions => '번역 옵션';
+
+  @override
+  String get translation_systemLanguage => '시스템 언어';
 }
diff --git a/lib/l10n/app_localizations_nl.dart b/lib/l10n/app_localizations_nl.dart
index 2317dd2..86809df 100644
--- a/lib/l10n/app_localizations_nl.dart
+++ b/lib/l10n/app_localizations_nl.dart
@@ -3552,17 +3552,112 @@ class AppLocalizationsNl extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Ruimtelijke ruis, RSSI, SNR en beschikbare tijd';
 
+  @override
+  String get translation_title => 'Vertaling';
+
+  @override
+  String get translation_enableTitle => 'Activeer vertaling';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Vertaal inkomende berichten en maak het mogelijk om berichten vooraf te vertalen.';
+
+  @override
+  String get translation_composerTitle => 'Vertaal voor verzending';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Stelt de standaardstatus van het pictogram voor de vertaling van de componist in.';
+
+  @override
+  String get translation_targetLanguage => 'Doeltaal';
+
+  @override
+  String get translation_useAppLanguage => 'Gebruik de taal van de app';
+
+  @override
+  String get translation_downloadedModelLabel => 'Gedownloade model';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Voorgeprogrammeerd Hugging Face-model';
+
+  @override
+  String get translation_manualUrlLabel => 'URL van de handleiding';
+
+  @override
+  String get translation_downloadModel => 'Download het model';
+
+  @override
+  String get translation_downloading => 'Downloaden...';
+
+  @override
+  String get translation_working => 'Werken...';
+
+  @override
+  String get translation_stop => 'Stoppen';
+
+  @override
+  String get translation_mergingChunks =>
+      'Het samenvoegen van de gedownloade stukken tot één eindbestand...';
+
+  @override
+  String get translation_downloadedModels => 'Gedownloade modellen';
+
+  @override
+  String get translation_deleteModel => 'Model verwijderen';
+
+  @override
+  String get translation_modelDownloaded => 'Vertalingmodel gedownload.';
+
+  @override
+  String get translation_downloadStopped => 'Download is afgebroken.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Download mislukt: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst =>
+      'Voer eerst een URL van een model in.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Toon PIN';
 
   @override
-  String get scanner_linuxPairingHidePin => 'PIN verbergen';
+  String get scanner_linuxPairingHidePin => 'Verberg PIN';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Bluetooth‑koppelings‑PIN';
+  String get scanner_linuxPairingPinTitle => 'PIN voor Bluetooth-koppeling';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Voer PIN in voor $deviceName (laat leeg als er geen is).';
+    return 'Voer het pincode-in voor $deviceName in (laat dit leeg als er geen is).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Berichtvertaling';
+
+  @override
+  String get translation_translateBeforeSending => 'Vertaal voor verzending';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'De berichten worden vertaald voordat ze verzonden worden.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Stuur berichten in de oorspronkelijke, getypte taal.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Vertalen naar $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Opties voor vertaling';
+
+  @override
+  String get translation_systemLanguage => 'Taal van het systeem';
 }
diff --git a/lib/l10n/app_localizations_pl.dart b/lib/l10n/app_localizations_pl.dart
index cc5e2a2..8952815 100644
--- a/lib/l10n/app_localizations_pl.dart
+++ b/lib/l10n/app_localizations_pl.dart
@@ -3586,16 +3586,110 @@ class AppLocalizationsPl extends AppLocalizations {
       'Szum tła, RSSI, SNR oraz czas dostępny';
 
   @override
-  String get scanner_linuxPairingShowPin => 'Pokaż PIN';
+  String get translation_title => 'Tłumaczenie';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Ukryj PIN';
+  String get translation_enableTitle => 'Włącz tłumaczenie';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Kod PIN parowania Bluetooth';
+  String get translation_enableSubtitle =>
+      'Tłumaczenie otrzymywanych wiadomości oraz umożliwienie tłumaczenia przed wysłaniem.';
+
+  @override
+  String get translation_composerTitle => 'Przekład przed wysłaniem';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Kontroluje domyślny stan ikony tłumaczenia w edytorze.';
+
+  @override
+  String get translation_targetLanguage => 'Język docelowy';
+
+  @override
+  String get translation_useAppLanguage => 'Użyj języka aplikacji';
+
+  @override
+  String get translation_downloadedModelLabel => 'Pobudowany model';
+
+  @override
+  String get translation_presetModelLabel => 'Wspólny model Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel => 'Adres URL do wersji manualnej';
+
+  @override
+  String get translation_downloadModel => 'Pobierz model';
+
+  @override
+  String get translation_downloading => 'Pobieranie...';
+
+  @override
+  String get translation_working => 'Praca...';
+
+  @override
+  String get translation_stop => 'Zatrzymaj się';
+
+  @override
+  String get translation_mergingChunks =>
+      'Scalanie pobranych fragmentów w jeden plik końcowy...';
+
+  @override
+  String get translation_downloadedModels => 'Pobrane modele';
+
+  @override
+  String get translation_deleteModel => 'Usuń model';
+
+  @override
+  String get translation_modelDownloaded => 'Model tłumaczenia został pobrany.';
+
+  @override
+  String get translation_downloadStopped => 'Pobieranie zakończone.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Nie udało się pobrać: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Najpierw wprowadź adres URL modelu.';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'Wyświetl kod PIN';
+
+  @override
+  String get scanner_linuxPairingHidePin => 'Ukryj kod PIN';
+
+  @override
+  String get scanner_linuxPairingPinTitle =>
+      'PIN do sparowania przez Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Wprowadź kod PIN dla $deviceName (pozostaw puste, jeśli brak).';
+    return 'Wprowadź kod PIN dla $deviceName (pust, jeśli nie jest wymagany).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Tłumaczenie wiadomości';
+
+  @override
+  String get translation_translateBeforeSending => 'Przekład przed wysłaniem';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Komunikaty zostaną przetłumaczone przed wysłaniem.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Wysyłaj wiadomości w oryginalnym, wpisanym formacie.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Tłumacz na $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Opcje tłumaczenia';
+
+  @override
+  String get translation_systemLanguage => 'Język systemu';
 }
diff --git a/lib/l10n/app_localizations_pt.dart b/lib/l10n/app_localizations_pt.dart
index 98c72f5..43dc27a 100644
--- a/lib/l10n/app_localizations_pt.dart
+++ b/lib/l10n/app_localizations_pt.dart
@@ -3567,17 +3567,111 @@ class AppLocalizationsPt extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Nível de ruído, RSSI, SNR e tempo de transmissão';
 
+  @override
+  String get translation_title => 'Tradução';
+
+  @override
+  String get translation_enableTitle => 'Ativar a tradução';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Traduzir mensagens recebidas e permitir a tradução antes do envio.';
+
+  @override
+  String get translation_composerTitle => 'Traduza antes de enviar';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Controla o estado padrão do ícone de tradução do compositor.';
+
+  @override
+  String get translation_targetLanguage => 'Língua-alvo';
+
+  @override
+  String get translation_useAppLanguage => 'Utilize o idioma da aplicação';
+
+  @override
+  String get translation_downloadedModelLabel => 'Modelo baixado';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Modelo pré-definido da Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel => 'URL do modelo manual';
+
+  @override
+  String get translation_downloadModel => 'Baixar modelo';
+
+  @override
+  String get translation_downloading => 'Baixando...';
+
+  @override
+  String get translation_working => 'Trabalhando...';
+
+  @override
+  String get translation_stop => 'Pare';
+
+  @override
+  String get translation_mergingChunks =>
+      'Combinando os fragmentos baixados em um único arquivo...';
+
+  @override
+  String get translation_downloadedModels => 'Modelos baixados';
+
+  @override
+  String get translation_deleteModel => 'Excluir modelo';
+
+  @override
+  String get translation_modelDownloaded => 'Modelo de tradução baixado.';
+
+  @override
+  String get translation_downloadStopped => 'Download interrompido.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Falha na descarga: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Insira primeiro a URL do modelo.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Mostrar PIN';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Ocultar PIN';
+  String get scanner_linuxPairingHidePin => 'Esconder o PIN';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'PIN de emparelhamento Bluetooth';
+  String get scanner_linuxPairingPinTitle => 'PIN de pareamento Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Insira o PIN para $deviceName (deixe em branco se não houver).';
+    return 'Insira o código PIN para $deviceName (deixe em branco se não houver).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Tradução da mensagem';
+
+  @override
+  String get translation_translateBeforeSending => 'Traduzir antes de enviar';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'As mensagens serão traduzidas antes de serem enviadas.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Envie mensagens no idioma original, conforme digitado.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Traduzir para $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Opções de tradução';
+
+  @override
+  String get translation_systemLanguage => 'Idioma do sistema';
 }
diff --git a/lib/l10n/app_localizations_ru.dart b/lib/l10n/app_localizations_ru.dart
index 4184641..703d80d 100644
--- a/lib/l10n/app_localizations_ru.dart
+++ b/lib/l10n/app_localizations_ru.dart
@@ -3582,16 +3582,111 @@ class AppLocalizationsRu extends AppLocalizations {
       'Уровень шума, RSSI, SNR и время передачи';
 
   @override
-  String get scanner_linuxPairingShowPin => 'Показать PIN';
+  String get translation_title => 'Перевод';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Скрыть PIN';
+  String get translation_enableTitle => 'Включить перевод';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'PIN‑код сопряжения Bluetooth';
+  String get translation_enableSubtitle =>
+      'Переводить входящие сообщения и позволять предварительный перевод перед отправкой.';
+
+  @override
+  String get translation_composerTitle => 'Переводить перед отправкой';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Управляет исходным состоянием значка перевода, предоставляемого редактором.';
+
+  @override
+  String get translation_targetLanguage => 'Целевой язык';
+
+  @override
+  String get translation_useAppLanguage => 'Используйте язык приложения';
+
+  @override
+  String get translation_downloadedModelLabel => 'Загруженная модель';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Предопределенная модель от Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel => 'Ссылка на руководство';
+
+  @override
+  String get translation_downloadModel => 'Скачать модель';
+
+  @override
+  String get translation_downloading => 'Загрузка...';
+
+  @override
+  String get translation_working => 'Работа...';
+
+  @override
+  String get translation_stop => 'Прекратите';
+
+  @override
+  String get translation_mergingChunks =>
+      'Объединение скачанных фрагментов в один финальный файл...';
+
+  @override
+  String get translation_downloadedModels => 'Загруженные модели';
+
+  @override
+  String get translation_deleteModel => 'Удалить модель';
+
+  @override
+  String get translation_modelDownloaded => 'Модель перевода загружена.';
+
+  @override
+  String get translation_downloadStopped => 'Процесс загрузки был прерван.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Не удалось скачать: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Сначала введите URL модели.';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'Показать PIN-код';
+
+  @override
+  String get scanner_linuxPairingHidePin => 'Скрыть PIN-код';
+
+  @override
+  String get scanner_linuxPairingPinTitle =>
+      'PIN для сопряжения устройств по Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Введите PIN‑код для $deviceName (оставьте пустым, если нет).';
+    return 'Введите PIN-код для $deviceName (оставьте поле пустым, если PIN-код отсутствует).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Перевод сообщения';
+
+  @override
+  String get translation_translateBeforeSending => 'Перевести перед отправкой';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Сообщения будут переведены перед отправкой.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Отправляйте сообщения на языке, в котором они были изначально набраны.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Перевести на $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Варианты перевода';
+
+  @override
+  String get translation_systemLanguage => 'Язык системы';
 }
diff --git a/lib/l10n/app_localizations_sk.dart b/lib/l10n/app_localizations_sk.dart
index 59f46bd..980657d 100644
--- a/lib/l10n/app_localizations_sk.dart
+++ b/lib/l10n/app_localizations_sk.dart
@@ -3545,6 +3545,77 @@ class AppLocalizationsSk extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Úroveň hluku, RSSI, SNR a časové rozloženie';
 
+  @override
+  String get translation_title => 'Preklad';
+
+  @override
+  String get translation_enableTitle => 'Aktivovať preklad';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Prekladajte prichádzajúce správy a umožnite ich preklad pred odoslaním.';
+
+  @override
+  String get translation_composerTitle => 'Preložte pred odeslaním';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Riadi výchoce stav ikony pre preklad, ktorú používa program.';
+
+  @override
+  String get translation_targetLanguage => 'Cieľový jazyk';
+
+  @override
+  String get translation_useAppLanguage => 'Použite jazyk aplikácie';
+
+  @override
+  String get translation_downloadedModelLabel => 'Stiahnutý model';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Prednastavený model od Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel =>
+      'Odkaz na manuál (v elektronickej forme)';
+
+  @override
+  String get translation_downloadModel => 'Stiahnuť model';
+
+  @override
+  String get translation_downloading => 'Stiahnutie...';
+
+  @override
+  String get translation_working => 'Práca...';
+
+  @override
+  String get translation_stop => 'Zastavte';
+
+  @override
+  String get translation_mergingChunks =>
+      'Sliečenie stiahnutých častí do konečného súboru...';
+
+  @override
+  String get translation_downloadedModels => 'Stiahnuté modely';
+
+  @override
+  String get translation_deleteModel => 'Odstrániť model';
+
+  @override
+  String get translation_modelDownloaded => 'Model pre preklad bol stiahnutý.';
+
+  @override
+  String get translation_downloadStopped => 'Stiahnutie bolo prerušené.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Neúspešné stiahnutie: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst =>
+      'Najprv zadajte URL pre konkrétny model.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Zobraziť PIN';
 
@@ -3552,10 +3623,35 @@ class AppLocalizationsSk extends AppLocalizations {
   String get scanner_linuxPairingHidePin => 'Skryť PIN';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Bluetooth párovací PIN';
+  String get scanner_linuxPairingPinTitle => 'PIN pre párovanie cez Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Zadajte PIN pre $deviceName (ak nie je, nechajte prázdne).';
+    return 'Zadajte PIN pre $deviceName (ak neexistuje, nechajte prázdne).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Preklad textu';
+
+  @override
+  String get translation_translateBeforeSending => 'Preložte pred odeslaním';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Správy budú preložené, než budú odoslané.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Posielajte správy v pôvodnej písanom jazyku.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Preložte do $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Možnosti prekladania';
+
+  @override
+  String get translation_systemLanguage => 'Jazyk systému';
 }
diff --git a/lib/l10n/app_localizations_sl.dart b/lib/l10n/app_localizations_sl.dart
index 171353c..ad2a278 100644
--- a/lib/l10n/app_localizations_sl.dart
+++ b/lib/l10n/app_localizations_sl.dart
@@ -3550,17 +3550,114 @@ class AppLocalizationsSl extends AppLocalizations {
   String get radioStats_settingsSubtitle =>
       'Število šumov, RSSI, SNR in čas, ki ga je napolnila oprema';
 
+  @override
+  String get translation_title => 'Prevod';
+
+  @override
+  String get translation_enableTitle => 'Omogočite prevod';
+
+  @override
+  String get translation_enableSubtitle =>
+      'Prevedite vstopne sporočila in omogočite predhodno prevajanje.';
+
+  @override
+  String get translation_composerTitle => 'Preprištejte, preden pošljete';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Ureja privzeto stanje ikone za prevod, ki jo uporablja avtor.';
+
+  @override
+  String get translation_targetLanguage => 'Ciljna jezika';
+
+  @override
+  String get translation_useAppLanguage => 'Uporabite jezik aplikacije';
+
+  @override
+  String get translation_downloadedModelLabel => 'Naložen model';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Prednastavljeni model Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel => 'URL za ročni model';
+
+  @override
+  String get translation_downloadModel => 'Prenesite model';
+
+  @override
+  String get translation_downloading => 'Izvajanje...';
+
+  @override
+  String get translation_working => 'Delo...';
+
+  @override
+  String get translation_stop => 'Prekliji';
+
+  @override
+  String get translation_mergingChunks =>
+      'Sklapljanje prenesenih delov v končni datoteko...';
+
+  @override
+  String get translation_downloadedModels => 'Naloženi modeli';
+
+  @override
+  String get translation_deleteModel => 'Izbrisati model';
+
+  @override
+  String get translation_modelDownloaded =>
+      'Model za prevajanje je bil naložen.';
+
+  @override
+  String get translation_downloadStopped => 'Prenos je bil prekinjen.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Izgovoritev ni bila uspešna: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Najprej vnesite URL model.';
+
   @override
   String get scanner_linuxPairingShowPin => 'Prikaži PIN';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Skrij PIN';
+  String get scanner_linuxPairingHidePin => 'Skrijte PIN';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Bluetooth PIN za seznanjanje';
+  String get scanner_linuxPairingPinTitle =>
+      'PIN za združevanje preko Bluetootha';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Vnesite PIN za $deviceName (pustite prazno, če ga ni).';
+    return 'Vnesite PIN kodo za $deviceName (ostavite prazno, če nimate kode).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Prevod sporočila';
+
+  @override
+  String get translation_translateBeforeSending =>
+      'Preprištejte, preden pošljete';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Vsebina sporočil bo prevedena, preden jih pošljemo.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Pošljite sporočila v originalnem tipkanem jeziku.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Prevesti v $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Možnosti prevoda';
+
+  @override
+  String get translation_systemLanguage => 'Jezik sistema';
 }
diff --git a/lib/l10n/app_localizations_sv.dart b/lib/l10n/app_localizations_sv.dart
index 6a776d7..cc590c2 100644
--- a/lib/l10n/app_localizations_sv.dart
+++ b/lib/l10n/app_localizations_sv.dart
@@ -3528,16 +3528,112 @@ class AppLocalizationsSv extends AppLocalizations {
       'Bakgrundsnivå, RSSI, SNR och tillgänglig tid';
 
   @override
-  String get scanner_linuxPairingShowPin => 'Visa PIN';
+  String get translation_title => 'Översättning';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Dölj PIN';
+  String get translation_enableTitle => 'Aktivera översättning';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'Bluetooth‑parnings‑PIN';
+  String get translation_enableSubtitle =>
+      'Översätt inkommande meddelanden och möjliggör översättning före avsändning.';
+
+  @override
+  String get translation_composerTitle => 'Översätt innan du skickar';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Styr standardtillståndet för kompositorns översättningsikon.';
+
+  @override
+  String get translation_targetLanguage => 'Målmedvetet språk';
+
+  @override
+  String get translation_useAppLanguage => 'Använd appens språk';
+
+  @override
+  String get translation_downloadedModelLabel => 'Nedladdad modell';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Fördefinierat Hugging Face-modell';
+
+  @override
+  String get translation_manualUrlLabel => 'Manualens URL';
+
+  @override
+  String get translation_downloadModel => 'Ladda ner modellen';
+
+  @override
+  String get translation_downloading => 'Nedladdning...';
+
+  @override
+  String get translation_working => 'Arbeta...';
+
+  @override
+  String get translation_stop => 'Stopp';
+
+  @override
+  String get translation_mergingChunks =>
+      'Slå samman de nedladdade delarna till en slutlig fil...';
+
+  @override
+  String get translation_downloadedModels => 'Nedladdade modeller';
+
+  @override
+  String get translation_deleteModel => 'Ta bort modell';
+
+  @override
+  String get translation_modelDownloaded =>
+      'Översättningsmodellen har laddats ner.';
+
+  @override
+  String get translation_downloadStopped => 'Nedladdningen avbruten.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Nedladdning misslyckades: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst =>
+      'Ange först en URL för en specifik modell.';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'Visa PIN-kod';
+
+  @override
+  String get scanner_linuxPairingHidePin => 'Dölj PIN-kod';
+
+  @override
+  String get scanner_linuxPairingPinTitle => 'PIN-kod för Bluetooth-anslutning';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Ange PIN för $deviceName (lämna tomt om ingen).';
+    return 'Ange PIN-kod för $deviceName (lämna tomt om ingen finns).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Meddelandets översättning';
+
+  @override
+  String get translation_translateBeforeSending => 'Översätt innan du skickar';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Meddelandena kommer att översättas innan de skickas.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Skicka meddelanden på det ursprungliga, stavade språket.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Översätt till $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Översättningsalternativ';
+
+  @override
+  String get translation_systemLanguage => 'Språk för systemet';
 }
diff --git a/lib/l10n/app_localizations_uk.dart b/lib/l10n/app_localizations_uk.dart
index 9ebead2..dd7bf63 100644
--- a/lib/l10n/app_localizations_uk.dart
+++ b/lib/l10n/app_localizations_uk.dart
@@ -3585,16 +3585,113 @@ class AppLocalizationsUk extends AppLocalizations {
       'Рівень шуму, RSSI, SNR та час, протягом якого пристрій використовує радіоканал.';
 
   @override
-  String get scanner_linuxPairingShowPin => 'Показати PIN';
+  String get translation_title => 'Переклад';
 
   @override
-  String get scanner_linuxPairingHidePin => 'Приховати PIN';
+  String get translation_enableTitle => 'Увімкнути переклад';
 
   @override
-  String get scanner_linuxPairingPinTitle => 'PIN‑код спарювання Bluetooth';
+  String get translation_enableSubtitle =>
+      'Перекладати отримані повідомлення та дозволяти попередній переклад перед відправкою.';
+
+  @override
+  String get translation_composerTitle => 'Перекладіть перед відправкою';
+
+  @override
+  String get translation_composerSubtitle =>
+      'Контролює стан ікон перекладу, який використовується за замовчуванням.';
+
+  @override
+  String get translation_targetLanguage => 'Цільова мова';
+
+  @override
+  String get translation_useAppLanguage => 'Використовуйте мову додатку';
+
+  @override
+  String get translation_downloadedModelLabel => 'Завантажений шаблон';
+
+  @override
+  String get translation_presetModelLabel =>
+      'Заздалегідь налаштований модель від Hugging Face';
+
+  @override
+  String get translation_manualUrlLabel =>
+      'Посилання на веб-сторінку з інструкцією';
+
+  @override
+  String get translation_downloadModel => 'Завантажити модель';
+
+  @override
+  String get translation_downloading => 'Завантаження...';
+
+  @override
+  String get translation_working => 'Працюю...';
+
+  @override
+  String get translation_stop => 'Припинити';
+
+  @override
+  String get translation_mergingChunks =>
+      'Об\'єднання завантажених фрагментів у кінцевий файл...';
+
+  @override
+  String get translation_downloadedModels => 'Завантажені моделі';
+
+  @override
+  String get translation_deleteModel => 'Видалити модель';
+
+  @override
+  String get translation_modelDownloaded => 'Модель перекладу завантажена.';
+
+  @override
+  String get translation_downloadStopped => 'Завантаження призупинено.';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return 'Не вдалося завантажити: $error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => 'Спочатку введіть URL моделі.';
+
+  @override
+  String get scanner_linuxPairingShowPin => 'Показати PIN-код';
+
+  @override
+  String get scanner_linuxPairingHidePin => 'Приховати PIN-код';
+
+  @override
+  String get scanner_linuxPairingPinTitle =>
+      'PIN для з\'єднання через Bluetooth';
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return 'Введіть PIN для $deviceName (залиште порожнім, якщо його немає).';
+    return 'Введіть PIN-код для $deviceName (залиште поле порожнім, якщо немає).';
   }
+
+  @override
+  String get translation_messageTranslation => 'Переклад повідомлення';
+
+  @override
+  String get translation_translateBeforeSending =>
+      'Перекладіть перед відправкою';
+
+  @override
+  String get translation_composerEnabledHint =>
+      'Повідомлення будуть перекладені перед відправленням.';
+
+  @override
+  String get translation_composerDisabledHint =>
+      'Надсилайте повідомлення, використовуючи оригінальний текстовий формат.';
+
+  @override
+  String translation_translateTo(String language) {
+    return 'Перекласти на $language';
+  }
+
+  @override
+  String get translation_translationOptions => 'Варіанти перекладу';
+
+  @override
+  String get translation_systemLanguage => 'Мова системи';
 }
diff --git a/lib/l10n/app_localizations_zh.dart b/lib/l10n/app_localizations_zh.dart
index 6d3a856..8910dcd 100644
--- a/lib/l10n/app_localizations_zh.dart
+++ b/lib/l10n/app_localizations_zh.dart
@@ -3300,7 +3300,72 @@ class AppLocalizationsZh extends AppLocalizations {
   String get radioStats_settingsSubtitle => '噪声水平、RSSI、信噪比和空中时间';
 
   @override
-  String get scanner_linuxPairingShowPin => '显示 PIN码';
+  String get translation_title => '翻译';
+
+  @override
+  String get translation_enableTitle => '启用翻译功能';
+
+  @override
+  String get translation_enableSubtitle => '翻译收到的消息，并允许在发送前进行翻译。';
+
+  @override
+  String get translation_composerTitle => '在发送之前进行翻译';
+
+  @override
+  String get translation_composerSubtitle => '控制作曲家翻译图标的默认状态。';
+
+  @override
+  String get translation_targetLanguage => '目标语言';
+
+  @override
+  String get translation_useAppLanguage => '使用应用程序语言';
+
+  @override
+  String get translation_downloadedModelLabel => '下载的模型';
+
+  @override
+  String get translation_presetModelLabel => '预设的 Hugging Face 模型';
+
+  @override
+  String get translation_manualUrlLabel => '手动模型网址';
+
+  @override
+  String get translation_downloadModel => '下载模型';
+
+  @override
+  String get translation_downloading => '正在下载...';
+
+  @override
+  String get translation_working => '工作中...';
+
+  @override
+  String get translation_stop => '停止';
+
+  @override
+  String get translation_mergingChunks => '将下载的片段合并成最终文件...';
+
+  @override
+  String get translation_downloadedModels => '下载的模型';
+
+  @override
+  String get translation_deleteModel => '删除模型';
+
+  @override
+  String get translation_modelDownloaded => '翻译模型已下载。';
+
+  @override
+  String get translation_downloadStopped => '下载已停止。';
+
+  @override
+  String translation_downloadFailed(String error) {
+    return '下载失败：$error';
+  }
+
+  @override
+  String get translation_enterUrlFirst => '首先，请输入模型的 URL。';
+
+  @override
+  String get scanner_linuxPairingShowPin => '显示PIN码';
 
   @override
   String get scanner_linuxPairingHidePin => '隐藏 PIN';
@@ -3310,6 +3375,29 @@ class AppLocalizationsZh extends AppLocalizations {
 
   @override
   String scanner_linuxPairingPinPrompt(String deviceName) {
-    return '输入 $deviceName 的 PIN（如果没有，请留空）。';
+    return '输入 $deviceName 的 PIN 码（如果为空，则留空）。';
   }
+
+  @override
+  String get translation_messageTranslation => '消息翻译';
+
+  @override
+  String get translation_translateBeforeSending => '在发送前进行翻译';
+
+  @override
+  String get translation_composerEnabledHint => '消息将在发送前进行翻译。';
+
+  @override
+  String get translation_composerDisabledHint => '使用原始的打字方式发送消息。';
+
+  @override
+  String translation_translateTo(String language) {
+    return '翻译成 $language';
+  }
+
+  @override
+  String get translation_translationOptions => '翻译选项';
+
+  @override
+  String get translation_systemLanguage => '系统语言';
 }
diff --git a/lib/l10n/app_nl.arb b/lib/l10n/app_nl.arb
index bc6a06c..cb1a11c 100644
--- a/lib/l10n/app_nl.arb
+++ b/lib/l10n/app_nl.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Radio-statistieken ophalen…",
   "radioStats_settingsTile": "Statistieken over radio",
   "radioStats_settingsSubtitle": "Ruimtelijke ruis, RSSI, SNR en beschikbare tijd",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enableSubtitle": "Vertaal inkomende berichten en maak het mogelijk om berichten vooraf te vertalen.",
+  "translation_enableTitle": "Activeer vertaling",
+  "translation_title": "Vertaling",
+  "translation_composerTitle": "Vertaal voor verzending",
+  "translation_composerSubtitle": "Stelt de standaardstatus van het pictogram voor de vertaling van de componist in.",
+  "translation_useAppLanguage": "Gebruik de taal van de app",
+  "translation_targetLanguage": "Doeltaal",
+  "translation_downloadedModelLabel": "Gedownloade model",
+  "translation_presetModelLabel": "Voorgeprogrammeerd Hugging Face-model",
+  "translation_manualUrlLabel": "URL van de handleiding",
+  "translation_downloadModel": "Download het model",
+  "translation_downloading": "Downloaden...",
+  "translation_working": "Werken...",
+  "translation_mergingChunks": "Het samenvoegen van de gedownloade stukken tot één eindbestand...",
+  "translation_stop": "Stoppen",
+  "translation_downloadedModels": "Gedownloade modellen",
+  "translation_deleteModel": "Model verwijderen",
+  "translation_modelDownloaded": "Vertalingmodel gedownload.",
+  "translation_downloadStopped": "Download is afgebroken.",
+  "translation_downloadFailed": "Download mislukt: {error}",
+  "translation_enterUrlFirst": "Voer eerst een URL van een model in.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
+  "scanner_linuxPairingPinTitle": "PIN voor Bluetooth-koppeling",
+  "scanner_linuxPairingHidePin": "Verberg PIN",
+  "scanner_linuxPairingPinPrompt": "Voer het pincode-in voor {deviceName} in (laat dit leeg als er geen is).",
   "scanner_linuxPairingShowPin": "Toon PIN",
-  "scanner_linuxPairingHidePin": "PIN verbergen",
-  "scanner_linuxPairingPinPrompt": "Voer PIN in voor {deviceName} (laat leeg als er geen is).",
-  "scanner_linuxPairingPinTitle": "Bluetooth‑koppelings‑PIN"
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerDisabledHint": "Stuur berichten in de oorspronkelijke, getypte taal.",
+  "translation_translateBeforeSending": "Vertaal voor verzending",
+  "translation_composerEnabledHint": "De berichten worden vertaald voordat ze verzonden worden.",
+  "translation_messageTranslation": "Berichtvertaling",
+  "translation_translationOptions": "Opties voor vertaling",
+  "translation_systemLanguage": "Taal van het systeem",
+  "translation_translateTo": "Vertalen naar {language}"
 }
diff --git a/lib/l10n/app_pl.arb b/lib/l10n/app_pl.arb
index 9eb33e5..aa3049f 100644
--- a/lib/l10n/app_pl.arb
+++ b/lib/l10n/app_pl.arb
@@ -2045,6 +2045,34 @@
   "radioStats_stripWaiting": "Pobieranie danych dotyczących radia…",
   "radioStats_settingsTile": "Statystyki radiowe",
   "radioStats_settingsSubtitle": "Szum tła, RSSI, SNR oraz czas dostępny",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerTitle": "Przekład przed wysłaniem",
+  "translation_title": "Tłumaczenie",
+  "translation_enableTitle": "Włącz tłumaczenie",
+  "translation_enableSubtitle": "Tłumaczenie otrzymywanych wiadomości oraz umożliwienie tłumaczenia przed wysłaniem.",
+  "translation_composerSubtitle": "Kontroluje domyślny stan ikony tłumaczenia w edytorze.",
+  "translation_targetLanguage": "Język docelowy",
+  "translation_useAppLanguage": "Użyj języka aplikacji",
+  "translation_downloadedModelLabel": "Pobudowany model",
+  "translation_presetModelLabel": "Wspólny model Hugging Face",
+  "translation_manualUrlLabel": "Adres URL do wersji manualnej",
+  "translation_downloadModel": "Pobierz model",
+  "translation_downloading": "Pobieranie...",
+  "translation_working": "Praca...",
+  "translation_stop": "Zatrzymaj się",
+  "translation_mergingChunks": "Scalanie pobranych fragmentów w jeden plik końcowy...",
+  "translation_downloadedModels": "Pobrane modele",
+  "translation_deleteModel": "Usuń model",
+  "translation_modelDownloaded": "Model tłumaczenia został pobrany.",
+  "translation_downloadStopped": "Pobieranie zakończone.",
+  "translation_downloadFailed": "Nie udało się pobrać: {error}",
+  "translation_enterUrlFirst": "Najpierw wprowadź adres URL modelu.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2052,8 +2080,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "Pokaż PIN",
-  "scanner_linuxPairingHidePin": "Ukryj PIN",
-  "scanner_linuxPairingPinPrompt": "Wprowadź kod PIN dla {deviceName} (pozostaw puste, jeśli brak).",
-  "scanner_linuxPairingPinTitle": "Kod PIN parowania Bluetooth"
+  "scanner_linuxPairingShowPin": "Wyświetl kod PIN",
+  "scanner_linuxPairingPinPrompt": "Wprowadź kod PIN dla {deviceName} (pust, jeśli nie jest wymagany).",
+  "scanner_linuxPairingHidePin": "Ukryj kod PIN",
+  "scanner_linuxPairingPinTitle": "PIN do sparowania przez Bluetooth",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerEnabledHint": "Komunikaty zostaną przetłumaczone przed wysłaniem.",
+  "translation_translateBeforeSending": "Przekład przed wysłaniem",
+  "translation_composerDisabledHint": "Wysyłaj wiadomości w oryginalnym, wpisanym formacie.",
+  "translation_messageTranslation": "Tłumaczenie wiadomości",
+  "translation_translationOptions": "Opcje tłumaczenia",
+  "translation_systemLanguage": "Język systemu",
+  "translation_translateTo": "Tłumacz na {language}"
 }
diff --git a/lib/l10n/app_pt.arb b/lib/l10n/app_pt.arb
index eb87a15..c667cb0 100644
--- a/lib/l10n/app_pt.arb
+++ b/lib/l10n/app_pt.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Obtendo estatísticas de rádio…",
   "radioStats_settingsTile": "Estatísticas de rádio",
   "radioStats_settingsSubtitle": "Nível de ruído, RSSI, SNR e tempo de transmissão",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerTitle": "Traduza antes de enviar",
+  "translation_enableSubtitle": "Traduzir mensagens recebidas e permitir a tradução antes do envio.",
+  "translation_enableTitle": "Ativar a tradução",
+  "translation_title": "Tradução",
+  "translation_composerSubtitle": "Controla o estado padrão do ícone de tradução do compositor.",
+  "translation_targetLanguage": "Língua-alvo",
+  "translation_useAppLanguage": "Utilize o idioma da aplicação",
+  "translation_downloadedModelLabel": "Modelo baixado",
+  "translation_presetModelLabel": "Modelo pré-definido da Hugging Face",
+  "translation_manualUrlLabel": "URL do modelo manual",
+  "translation_downloading": "Baixando...",
+  "translation_downloadModel": "Baixar modelo",
+  "translation_working": "Trabalhando...",
+  "translation_stop": "Pare",
+  "translation_mergingChunks": "Combinando os fragmentos baixados em um único arquivo...",
+  "translation_downloadedModels": "Modelos baixados",
+  "translation_deleteModel": "Excluir modelo",
+  "translation_modelDownloaded": "Modelo de tradução baixado.",
+  "translation_downloadStopped": "Download interrompido.",
+  "translation_downloadFailed": "Falha na descarga: {error}",
+  "translation_enterUrlFirst": "Insira primeiro a URL do modelo.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
+  "scanner_linuxPairingHidePin": "Esconder o PIN",
   "scanner_linuxPairingShowPin": "Mostrar PIN",
-  "scanner_linuxPairingHidePin": "Ocultar PIN",
-  "scanner_linuxPairingPinPrompt": "Insira o PIN para {deviceName} (deixe em branco se não houver).",
-  "scanner_linuxPairingPinTitle": "PIN de emparelhamento Bluetooth"
+  "scanner_linuxPairingPinTitle": "PIN de pareamento Bluetooth",
+  "scanner_linuxPairingPinPrompt": "Insira o código PIN para {deviceName} (deixe em branco se não houver).",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_messageTranslation": "Tradução da mensagem",
+  "translation_translateBeforeSending": "Traduzir antes de enviar",
+  "translation_composerEnabledHint": "As mensagens serão traduzidas antes de serem enviadas.",
+  "translation_composerDisabledHint": "Envie mensagens no idioma original, conforme digitado.",
+  "translation_translateTo": "Traduzir para {language}",
+  "translation_translationOptions": "Opções de tradução",
+  "translation_systemLanguage": "Idioma do sistema"
 }
diff --git a/lib/l10n/app_ru.arb b/lib/l10n/app_ru.arb
index c9493a0..730cfc9 100644
--- a/lib/l10n/app_ru.arb
+++ b/lib/l10n/app_ru.arb
@@ -1247,6 +1247,34 @@
   "radioStats_stripWaiting": "Получение данных о радио…",
   "radioStats_settingsTile": "Статистика радиовещания",
   "radioStats_settingsSubtitle": "Уровень шума, RSSI, SNR и время передачи",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enableSubtitle": "Переводить входящие сообщения и позволять предварительный перевод перед отправкой.",
+  "translation_composerTitle": "Переводить перед отправкой",
+  "translation_title": "Перевод",
+  "translation_enableTitle": "Включить перевод",
+  "translation_composerSubtitle": "Управляет исходным состоянием значка перевода, предоставляемого редактором.",
+  "translation_targetLanguage": "Целевой язык",
+  "translation_useAppLanguage": "Используйте язык приложения",
+  "translation_downloadedModelLabel": "Загруженная модель",
+  "translation_presetModelLabel": "Предопределенная модель от Hugging Face",
+  "translation_manualUrlLabel": "Ссылка на руководство",
+  "translation_downloadModel": "Скачать модель",
+  "translation_downloading": "Загрузка...",
+  "translation_stop": "Прекратите",
+  "translation_working": "Работа...",
+  "translation_mergingChunks": "Объединение скачанных фрагментов в один финальный файл...",
+  "translation_downloadedModels": "Загруженные модели",
+  "translation_deleteModel": "Удалить модель",
+  "translation_modelDownloaded": "Модель перевода загружена.",
+  "translation_downloadStopped": "Процесс загрузки был прерван.",
+  "translation_downloadFailed": "Не удалось скачать: {error}",
+  "translation_enterUrlFirst": "Сначала введите URL модели.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -1254,8 +1282,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "Показать PIN",
-  "scanner_linuxPairingPinPrompt": "Введите PIN‑код для {deviceName} (оставьте пустым, если нет).",
-  "scanner_linuxPairingHidePin": "Скрыть PIN",
-  "scanner_linuxPairingPinTitle": "PIN‑код сопряжения Bluetooth"
+  "scanner_linuxPairingPinPrompt": "Введите PIN-код для {deviceName} (оставьте поле пустым, если PIN-код отсутствует).",
+  "scanner_linuxPairingHidePin": "Скрыть PIN-код",
+  "scanner_linuxPairingPinTitle": "PIN для сопряжения устройств по Bluetooth",
+  "scanner_linuxPairingShowPin": "Показать PIN-код",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_translateBeforeSending": "Перевести перед отправкой",
+  "translation_composerEnabledHint": "Сообщения будут переведены перед отправкой.",
+  "translation_messageTranslation": "Перевод сообщения",
+  "translation_composerDisabledHint": "Отправляйте сообщения на языке, в котором они были изначально набраны.",
+  "translation_translateTo": "Перевести на {language}",
+  "translation_translationOptions": "Варианты перевода",
+  "translation_systemLanguage": "Язык системы"
 }
diff --git a/lib/l10n/app_sk.arb b/lib/l10n/app_sk.arb
index 5a7aa6d..cf99ca8 100644
--- a/lib/l10n/app_sk.arb
+++ b/lib/l10n/app_sk.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Získavanie údajov o rádiu…",
   "radioStats_settingsTile": "Štatistiky rádiových vysielaní",
   "radioStats_settingsSubtitle": "Úroveň hluku, RSSI, SNR a časové rozloženie",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enableSubtitle": "Prekladajte prichádzajúce správy a umožnite ich preklad pred odoslaním.",
+  "translation_enableTitle": "Aktivovať preklad",
+  "translation_composerTitle": "Preložte pred odeslaním",
+  "translation_title": "Preklad",
+  "translation_composerSubtitle": "Riadi výchoce stav ikony pre preklad, ktorú používa program.",
+  "translation_targetLanguage": "Cieľový jazyk",
+  "translation_useAppLanguage": "Použite jazyk aplikácie",
+  "translation_downloadedModelLabel": "Stiahnutý model",
+  "translation_presetModelLabel": "Prednastavený model od Hugging Face",
+  "translation_manualUrlLabel": "Odkaz na manuál (v elektronickej forme)",
+  "translation_downloadModel": "Stiahnuť model",
+  "translation_downloading": "Stiahnutie...",
+  "translation_working": "Práca...",
+  "translation_stop": "Zastavte",
+  "translation_mergingChunks": "Sliečenie stiahnutých častí do konečného súboru...",
+  "translation_downloadedModels": "Stiahnuté modely",
+  "translation_deleteModel": "Odstrániť model",
+  "translation_modelDownloaded": "Model pre preklad bol stiahnutý.",
+  "translation_downloadStopped": "Stiahnutie bolo prerušené.",
+  "translation_downloadFailed": "Neúspešné stiahnutie: {error}",
+  "translation_enterUrlFirst": "Najprv zadajte URL pre konkrétny model.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
-  "scanner_linuxPairingPinPrompt": "Zadajte PIN pre {deviceName} (ak nie je, nechajte prázdne).",
-  "scanner_linuxPairingShowPin": "Zobraziť PIN",
   "scanner_linuxPairingHidePin": "Skryť PIN",
-  "scanner_linuxPairingPinTitle": "Bluetooth párovací PIN"
+  "scanner_linuxPairingShowPin": "Zobraziť PIN",
+  "scanner_linuxPairingPinTitle": "PIN pre párovanie cez Bluetooth",
+  "scanner_linuxPairingPinPrompt": "Zadajte PIN pre {deviceName} (ak neexistuje, nechajte prázdne).",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerDisabledHint": "Posielajte správy v pôvodnej písanom jazyku.",
+  "translation_composerEnabledHint": "Správy budú preložené, než budú odoslané.",
+  "translation_translateBeforeSending": "Preložte pred odeslaním",
+  "translation_messageTranslation": "Preklad textu",
+  "translation_translateTo": "Preložte do {language}",
+  "translation_translationOptions": "Možnosti prekladania",
+  "translation_systemLanguage": "Jazyk systému"
 }
diff --git a/lib/l10n/app_sl.arb b/lib/l10n/app_sl.arb
index 9adb387..0c29a86 100644
--- a/lib/l10n/app_sl.arb
+++ b/lib/l10n/app_sl.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Prejemanje statistike o radiju…",
   "radioStats_settingsTile": "Radijske statistike",
   "radioStats_settingsSubtitle": "Število šumov, RSSI, SNR in čas, ki ga je napolnila oprema",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerTitle": "Preprištejte, preden pošljete",
+  "translation_title": "Prevod",
+  "translation_enableSubtitle": "Prevedite vstopne sporočila in omogočite predhodno prevajanje.",
+  "translation_enableTitle": "Omogočite prevod",
+  "translation_composerSubtitle": "Ureja privzeto stanje ikone za prevod, ki jo uporablja avtor.",
+  "translation_targetLanguage": "Ciljna jezika",
+  "translation_useAppLanguage": "Uporabite jezik aplikacije",
+  "translation_downloadedModelLabel": "Naložen model",
+  "translation_presetModelLabel": "Prednastavljeni model Hugging Face",
+  "translation_manualUrlLabel": "URL za ročni model",
+  "translation_downloadModel": "Prenesite model",
+  "translation_downloading": "Izvajanje...",
+  "translation_working": "Delo...",
+  "translation_stop": "Prekliji",
+  "translation_mergingChunks": "Sklapljanje prenesenih delov v končni datoteko...",
+  "translation_downloadedModels": "Naloženi modeli",
+  "translation_deleteModel": "Izbrisati model",
+  "translation_modelDownloaded": "Model za prevajanje je bil naložen.",
+  "translation_downloadStopped": "Prenos je bil prekinjen.",
+  "translation_downloadFailed": "Izgovoritev ni bila uspešna: {error}",
+  "translation_enterUrlFirst": "Najprej vnesite URL model.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
+  "scanner_linuxPairingHidePin": "Skrijte PIN",
   "scanner_linuxPairingShowPin": "Prikaži PIN",
-  "scanner_linuxPairingHidePin": "Skrij PIN",
-  "scanner_linuxPairingPinPrompt": "Vnesite PIN za {deviceName} (pustite prazno, če ga ni).",
-  "scanner_linuxPairingPinTitle": "Bluetooth PIN za seznanjanje"
+  "scanner_linuxPairingPinPrompt": "Vnesite PIN kodo za {deviceName} (ostavite prazno, če nimate kode).",
+  "scanner_linuxPairingPinTitle": "PIN za združevanje preko Bluetootha",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_translateBeforeSending": "Preprištejte, preden pošljete",
+  "translation_composerDisabledHint": "Pošljite sporočila v originalnem tipkanem jeziku.",
+  "translation_composerEnabledHint": "Vsebina sporočil bo prevedena, preden jih pošljemo.",
+  "translation_messageTranslation": "Prevod sporočila",
+  "translation_translateTo": "Prevesti v {language}",
+  "translation_translationOptions": "Možnosti prevoda",
+  "translation_systemLanguage": "Jezik sistema"
 }
diff --git a/lib/l10n/app_sv.arb b/lib/l10n/app_sv.arb
index e4ace3e..3232888 100644
--- a/lib/l10n/app_sv.arb
+++ b/lib/l10n/app_sv.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Hämtar radiostatistik…",
   "radioStats_settingsTile": "Radiostation",
   "radioStats_settingsSubtitle": "Bakgrundsnivå, RSSI, SNR och tillgänglig tid",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_enableSubtitle": "Översätt inkommande meddelanden och möjliggör översättning före avsändning.",
+  "translation_enableTitle": "Aktivera översättning",
+  "translation_title": "Översättning",
+  "translation_composerTitle": "Översätt innan du skickar",
+  "translation_composerSubtitle": "Styr standardtillståndet för kompositorns översättningsikon.",
+  "translation_targetLanguage": "Målmedvetet språk",
+  "translation_useAppLanguage": "Använd appens språk",
+  "translation_downloadedModelLabel": "Nedladdad modell",
+  "translation_presetModelLabel": "Fördefinierat Hugging Face-modell",
+  "translation_manualUrlLabel": "Manualens URL",
+  "translation_downloadModel": "Ladda ner modellen",
+  "translation_downloading": "Nedladdning...",
+  "translation_working": "Arbeta...",
+  "translation_stop": "Stopp",
+  "translation_mergingChunks": "Slå samman de nedladdade delarna till en slutlig fil...",
+  "translation_downloadedModels": "Nedladdade modeller",
+  "translation_deleteModel": "Ta bort modell",
+  "translation_modelDownloaded": "Översättningsmodellen har laddats ner.",
+  "translation_downloadStopped": "Nedladdningen avbruten.",
+  "translation_downloadFailed": "Nedladdning misslyckades: {error}",
+  "translation_enterUrlFirst": "Ange först en URL för en specifik modell.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "Visa PIN",
-  "scanner_linuxPairingPinTitle": "Bluetooth‑parnings‑PIN",
-  "scanner_linuxPairingPinPrompt": "Ange PIN för {deviceName} (lämna tomt om ingen).",
-  "scanner_linuxPairingHidePin": "Dölj PIN"
+  "scanner_linuxPairingPinPrompt": "Ange PIN-kod för {deviceName} (lämna tomt om ingen finns).",
+  "scanner_linuxPairingPinTitle": "PIN-kod för Bluetooth-anslutning",
+  "scanner_linuxPairingShowPin": "Visa PIN-kod",
+  "scanner_linuxPairingHidePin": "Dölj PIN-kod",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerDisabledHint": "Skicka meddelanden på det ursprungliga, stavade språket.",
+  "translation_translateBeforeSending": "Översätt innan du skickar",
+  "translation_composerEnabledHint": "Meddelandena kommer att översättas innan de skickas.",
+  "translation_messageTranslation": "Meddelandets översättning",
+  "translation_translateTo": "Översätt till {language}",
+  "translation_translationOptions": "Översättningsalternativ",
+  "translation_systemLanguage": "Språk för systemet"
 }
diff --git a/lib/l10n/app_uk.arb b/lib/l10n/app_uk.arb
index 8e27da1..ddab576 100644
--- a/lib/l10n/app_uk.arb
+++ b/lib/l10n/app_uk.arb
@@ -2007,6 +2007,34 @@
   "radioStats_stripWaiting": "Отримано статистику радіо…",
   "radioStats_settingsTile": "Дані про радіостанції",
   "radioStats_settingsSubtitle": "Рівень шуму, RSSI, SNR та час, протягом якого пристрій використовує радіоканал.",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerTitle": "Перекладіть перед відправкою",
+  "translation_title": "Переклад",
+  "translation_enableTitle": "Увімкнути переклад",
+  "translation_enableSubtitle": "Перекладати отримані повідомлення та дозволяти попередній переклад перед відправкою.",
+  "translation_composerSubtitle": "Контролює стан ікон перекладу, який використовується за замовчуванням.",
+  "translation_targetLanguage": "Цільова мова",
+  "translation_useAppLanguage": "Використовуйте мову додатку",
+  "translation_downloadedModelLabel": "Завантажений шаблон",
+  "translation_presetModelLabel": "Заздалегідь налаштований модель від Hugging Face",
+  "translation_manualUrlLabel": "Посилання на веб-сторінку з інструкцією",
+  "translation_downloadModel": "Завантажити модель",
+  "translation_downloading": "Завантаження...",
+  "translation_working": "Працюю...",
+  "translation_stop": "Припинити",
+  "translation_mergingChunks": "Об'єднання завантажених фрагментів у кінцевий файл...",
+  "translation_downloadedModels": "Завантажені моделі",
+  "translation_deleteModel": "Видалити модель",
+  "translation_modelDownloaded": "Модель перекладу завантажена.",
+  "translation_downloadStopped": "Завантаження призупинено.",
+  "translation_downloadFailed": "Не вдалося завантажити: {error}",
+  "translation_enterUrlFirst": "Спочатку введіть URL моделі.",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2014,8 +2042,22 @@
       }
     }
   },
-  "scanner_linuxPairingPinTitle": "PIN‑код спарювання Bluetooth",
-  "scanner_linuxPairingShowPin": "Показати PIN",
-  "scanner_linuxPairingPinPrompt": "Введіть PIN для {deviceName} (залиште порожнім, якщо його немає).",
-  "scanner_linuxPairingHidePin": "Приховати PIN"
+  "scanner_linuxPairingPinTitle": "PIN для з'єднання через Bluetooth",
+  "scanner_linuxPairingShowPin": "Показати PIN-код",
+  "scanner_linuxPairingPinPrompt": "Введіть PIN-код для {deviceName} (залиште поле порожнім, якщо немає).",
+  "scanner_linuxPairingHidePin": "Приховати PIN-код",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerEnabledHint": "Повідомлення будуть перекладені перед відправленням.",
+  "translation_messageTranslation": "Переклад повідомлення",
+  "translation_composerDisabledHint": "Надсилайте повідомлення, використовуючи оригінальний текстовий формат.",
+  "translation_translateBeforeSending": "Перекладіть перед відправкою",
+  "translation_translateTo": "Перекласти на {language}",
+  "translation_translationOptions": "Варіанти перекладу",
+  "translation_systemLanguage": "Мова системи"
 }
diff --git a/lib/l10n/app_zh.arb b/lib/l10n/app_zh.arb
index cd7b44d..766be44 100644
--- a/lib/l10n/app_zh.arb
+++ b/lib/l10n/app_zh.arb
@@ -2012,6 +2012,34 @@
   "radioStats_stripWaiting": "正在获取收音机数据…",
   "radioStats_settingsTile": "广播统计数据",
   "radioStats_settingsSubtitle": "噪声水平、RSSI、信噪比和空中时间",
+  "@translation_downloadFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_title": "翻译",
+  "translation_enableSubtitle": "翻译收到的消息，并允许在发送前进行翻译。",
+  "translation_composerTitle": "在发送之前进行翻译",
+  "translation_enableTitle": "启用翻译功能",
+  "translation_composerSubtitle": "控制作曲家翻译图标的默认状态。",
+  "translation_targetLanguage": "目标语言",
+  "translation_useAppLanguage": "使用应用程序语言",
+  "translation_downloadedModelLabel": "下载的模型",
+  "translation_presetModelLabel": "预设的 Hugging Face 模型",
+  "translation_downloadModel": "下载模型",
+  "translation_manualUrlLabel": "手动模型网址",
+  "translation_downloading": "正在下载...",
+  "translation_working": "工作中...",
+  "translation_stop": "停止",
+  "translation_mergingChunks": "将下载的片段合并成最终文件...",
+  "translation_downloadedModels": "下载的模型",
+  "translation_deleteModel": "删除模型",
+  "translation_modelDownloaded": "翻译模型已下载。",
+  "translation_downloadStopped": "下载已停止。",
+  "translation_downloadFailed": "下载失败：{error}",
+  "translation_enterUrlFirst": "首先，请输入模型的 URL。",
   "@scanner_linuxPairingPinPrompt": {
     "placeholders": {
       "deviceName": {
@@ -2019,8 +2047,22 @@
       }
     }
   },
-  "scanner_linuxPairingShowPin": "显示 PIN码",
-  "scanner_linuxPairingPinPrompt": "输入 {deviceName} 的 PIN（如果没有，请留空）。",
   "scanner_linuxPairingPinTitle": "蓝牙配对 PIN",
-  "scanner_linuxPairingHidePin": "隐藏 PIN"
+  "scanner_linuxPairingPinPrompt": "输入 {deviceName} 的 PIN 码（如果为空，则留空）。",
+  "scanner_linuxPairingHidePin": "隐藏 PIN",
+  "scanner_linuxPairingShowPin": "显示PIN码",
+  "@translation_translateTo": {
+    "placeholders": {
+      "language": {
+        "type": "String"
+      }
+    }
+  },
+  "translation_composerDisabledHint": "使用原始的打字方式发送消息。",
+  "translation_messageTranslation": "消息翻译",
+  "translation_composerEnabledHint": "消息将在发送前进行翻译。",
+  "translation_translateBeforeSending": "在发送前进行翻译",
+  "translation_translateTo": "翻译成 {language}",
+  "translation_translationOptions": "翻译选项",
+  "translation_systemLanguage": "系统语言"
 }
diff --git a/lib/main.dart b/lib/main.dart
index c1bf022..3e57eb1 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -19,6 +19,7 @@ import 'services/app_debug_log_service.dart';
 import 'services/background_service.dart';
 import 'services/map_tile_cache_service.dart';
 import 'services/chat_text_scale_service.dart';
+import 'services/translation_service.dart';
 import 'services/ui_view_state_service.dart';
 import 'services/timeout_prediction_service.dart';
 import 'storage/prefs_manager.dart';
@@ -41,6 +42,7 @@ void main() async {
   final backgroundService = BackgroundService();
   final mapTileCacheService = MapTileCacheService();
   final chatTextScaleService = ChatTextScaleService();
+  final translationService = TranslationService(appSettingsService);
   final uiViewStateService = UiViewStateService();
   final timeoutPredictionService = TimeoutPredictionService(storage);
 
@@ -60,6 +62,7 @@ void main() async {
   _registerThirdPartyLicenses();
 
   await chatTextScaleService.initialize();
+  await translationService.refreshDownloadedModels();
   await uiViewStateService.initialize();
   await timeoutPredictionService.initialize();
 
@@ -68,6 +71,7 @@ void main() async {
     retryService: retryService,
     pathHistoryService: pathHistoryService,
     appSettingsService: appSettingsService,
+    translationService: translationService,
     bleDebugLogService: bleDebugLogService,
     appDebugLogService: appDebugLogService,
     backgroundService: backgroundService,
@@ -93,6 +97,7 @@ void main() async {
       appDebugLogService: appDebugLogService,
       mapTileCacheService: mapTileCacheService,
       chatTextScaleService: chatTextScaleService,
+      translationService: translationService,
       uiViewStateService: uiViewStateService,
       timeoutPredictionService: timeoutPredictionService,
     ),
@@ -130,6 +135,7 @@ class MeshCoreApp extends StatelessWidget {
   final AppDebugLogService appDebugLogService;
   final MapTileCacheService mapTileCacheService;
   final ChatTextScaleService chatTextScaleService;
+  final TranslationService translationService;
   final UiViewStateService uiViewStateService;
   final TimeoutPredictionService timeoutPredictionService;
 
@@ -144,6 +150,7 @@ class MeshCoreApp extends StatelessWidget {
     required this.appDebugLogService,
     required this.mapTileCacheService,
     required this.chatTextScaleService,
+    required this.translationService,
     required this.uiViewStateService,
     required this.timeoutPredictionService,
   });
@@ -159,6 +166,7 @@ class MeshCoreApp extends StatelessWidget {
         ChangeNotifierProvider.value(value: bleDebugLogService),
         ChangeNotifierProvider.value(value: appDebugLogService),
         ChangeNotifierProvider.value(value: chatTextScaleService),
+        ChangeNotifierProvider.value(value: translationService),
         ChangeNotifierProvider.value(value: uiViewStateService),
         Provider.value(value: storage),
         Provider.value(value: mapTileCacheService),
diff --git a/lib/models/app_settings.dart b/lib/models/app_settings.dart
index 36d36a6..d3d3421 100644
--- a/lib/models/app_settings.dart
+++ b/lib/models/app_settings.dart
@@ -1,3 +1,5 @@
+import 'translation_support.dart';
+
 enum UnitSystem { metric, imperial }
 
 extension UnitSystemValue on UnitSystem {
@@ -49,6 +51,12 @@ class AppSettings {
   final String tcpServerAddress;
   final int tcpServerPort;
   final bool jumpToOldestUnread;
+  final bool translationEnabled;
+  final String? translationTargetLanguageCode;
+  final bool composerTranslationEnabled;
+  final String? translationModelSourceUrl;
+  final String? translationSelectedModelId;
+  final List<TranslationModelRecord> translationDownloadedModels;
 
   AppSettings({
     this.clearPathOnMaxRetry = false,
@@ -86,9 +94,16 @@ class AppSettings {
     this.tcpServerAddress = '',
     this.tcpServerPort = 0,
     this.jumpToOldestUnread = false,
+    this.translationEnabled = false,
+    this.translationTargetLanguageCode,
+    this.composerTranslationEnabled = false,
+    this.translationModelSourceUrl,
+    this.translationSelectedModelId,
+    List<TranslationModelRecord>? translationDownloadedModels,
   }) : batteryChemistryByDeviceId = batteryChemistryByDeviceId ?? {},
        batteryChemistryByRepeaterId = batteryChemistryByRepeaterId ?? {},
-       mutedChannels = mutedChannels ?? {};
+       mutedChannels = mutedChannels ?? {},
+       translationDownloadedModels = translationDownloadedModels ?? const [];
 
   Map<String, dynamic> toJson() {
     return {
@@ -127,6 +142,14 @@ class AppSettings {
       'tcp_server_address': tcpServerAddress,
       'tcp_server_port': tcpServerPort,
       'jump_to_oldest_unread': jumpToOldestUnread,
+      'translation_enabled': translationEnabled,
+      'translation_target_language_code': translationTargetLanguageCode,
+      'composer_translation_enabled': composerTranslationEnabled,
+      'translation_model_source_url': translationModelSourceUrl,
+      'translation_selected_model_id': translationSelectedModelId,
+      'translation_downloaded_models': translationDownloadedModels
+          .map((model) => model.toJson())
+          .toList(),
     };
   }
 
@@ -196,6 +219,24 @@ class AppSettings {
       tcpServerAddress: json['tcp_server_address'] as String? ?? '',
       tcpServerPort: json['tcp_server_port'] as int? ?? 0,
       jumpToOldestUnread: json['jump_to_oldest_unread'] as bool? ?? false,
+      translationEnabled: json['translation_enabled'] as bool? ?? false,
+      translationTargetLanguageCode:
+          json['translation_target_language_code'] as String?,
+      composerTranslationEnabled:
+          json['composer_translation_enabled'] as bool? ?? false,
+      translationModelSourceUrl:
+          json['translation_model_source_url'] as String?,
+      translationSelectedModelId:
+          json['translation_selected_model_id'] as String?,
+      translationDownloadedModels:
+          (json['translation_downloaded_models'] as List<dynamic>?)
+              ?.map(
+                (entry) => TranslationModelRecord.fromJson(
+                  Map<String, dynamic>.from(entry as Map),
+                ),
+              )
+              .toList() ??
+          const [],
     );
   }
 
@@ -235,6 +276,12 @@ class AppSettings {
     String? tcpServerAddress,
     int? tcpServerPort,
     bool? jumpToOldestUnread,
+    bool? translationEnabled,
+    Object? translationTargetLanguageCode = _unset,
+    bool? composerTranslationEnabled,
+    Object? translationModelSourceUrl = _unset,
+    Object? translationSelectedModelId = _unset,
+    List<TranslationModelRecord>? translationDownloadedModels,
   }) {
     return AppSettings(
       clearPathOnMaxRetry: clearPathOnMaxRetry ?? this.clearPathOnMaxRetry,
@@ -284,6 +331,20 @@ class AppSettings {
       tcpServerAddress: tcpServerAddress ?? this.tcpServerAddress,
       tcpServerPort: tcpServerPort ?? this.tcpServerPort,
       jumpToOldestUnread: jumpToOldestUnread ?? this.jumpToOldestUnread,
+      translationEnabled: translationEnabled ?? this.translationEnabled,
+      translationTargetLanguageCode: translationTargetLanguageCode == _unset
+          ? this.translationTargetLanguageCode
+          : translationTargetLanguageCode as String?,
+      composerTranslationEnabled:
+          composerTranslationEnabled ?? this.composerTranslationEnabled,
+      translationModelSourceUrl: translationModelSourceUrl == _unset
+          ? this.translationModelSourceUrl
+          : translationModelSourceUrl as String?,
+      translationSelectedModelId: translationSelectedModelId == _unset
+          ? this.translationSelectedModelId
+          : translationSelectedModelId as String?,
+      translationDownloadedModels:
+          translationDownloadedModels ?? this.translationDownloadedModels,
     );
   }
 }
diff --git a/lib/models/channel_message.dart b/lib/models/channel_message.dart
index 7c09089..80c9705 100644
--- a/lib/models/channel_message.dart
+++ b/lib/models/channel_message.dart
@@ -2,6 +2,7 @@ import 'dart:typed_data';
 import '../connector/meshcore_protocol.dart';
 import '../helpers/reaction_helper.dart';
 import '../helpers/smaz.dart';
+import 'translation_support.dart';
 import '../utils/app_logger.dart';
 
 enum ChannelMessageStatus { pending, sent, failed }
@@ -24,9 +25,16 @@ class Repeat {
 }
 
 class ChannelMessage {
+  static const Object _unset = Object();
+
   final Uint8List? senderKey;
   final String senderName;
   final String text;
+  final String? originalText;
+  final String? translatedText;
+  final String? translatedLanguageCode;
+  final MessageTranslationStatus translationStatus;
+  final String? translationModelId;
   final DateTime timestamp;
   final bool isOutgoing;
   final ChannelMessageStatus status;
@@ -47,6 +55,11 @@ class ChannelMessage {
     this.senderKey,
     required this.senderName,
     required this.text,
+    this.originalText,
+    this.translatedText,
+    this.translatedLanguageCode,
+    this.translationStatus = MessageTranslationStatus.none,
+    this.translationModelId,
     required this.timestamp,
     required this.isOutgoing,
     this.status = ChannelMessageStatus.pending,
@@ -86,12 +99,30 @@ class ChannelMessage {
     String? replyToMessageId,
     String? replyToSenderName,
     String? replyToText,
+    Object? originalText = _unset,
+    Object? translatedText = _unset,
+    Object? translatedLanguageCode = _unset,
+    MessageTranslationStatus? translationStatus,
+    Object? translationModelId = _unset,
     Map<String, int>? reactions,
   }) {
     return ChannelMessage(
       senderKey: senderKey,
       senderName: senderName,
       text: text,
+      originalText: originalText == _unset
+          ? this.originalText
+          : originalText as String?,
+      translatedText: translatedText == _unset
+          ? this.translatedText
+          : translatedText as String?,
+      translatedLanguageCode: translatedLanguageCode == _unset
+          ? this.translatedLanguageCode
+          : translatedLanguageCode as String?,
+      translationStatus: translationStatus ?? this.translationStatus,
+      translationModelId: translationModelId == _unset
+          ? this.translationModelId
+          : translationModelId as String?,
       timestamp: timestamp,
       isOutgoing: isOutgoing,
       status: status ?? this.status,
@@ -191,12 +222,18 @@ class ChannelMessage {
   static ChannelMessage outgoing(
     String text,
     String senderName,
-    int channelIndex,
-  ) {
+    int channelIndex, {
+    String? originalText,
+    String? translatedLanguageCode,
+    String? translationModelId,
+  }) {
     return ChannelMessage(
       senderKey: null,
       senderName: senderName,
       text: text,
+      originalText: originalText,
+      translatedLanguageCode: translatedLanguageCode,
+      translationModelId: translationModelId,
       timestamp: DateTime.now(),
       isOutgoing: true,
       status: ChannelMessageStatus.pending,
diff --git a/lib/models/message.dart b/lib/models/message.dart
index 6b930c0..e139561 100644
--- a/lib/models/message.dart
+++ b/lib/models/message.dart
@@ -1,19 +1,27 @@
 import 'dart:typed_data';
 import '../connector/meshcore_protocol.dart';
 import '../helpers/reaction_helper.dart';
+import 'translation_support.dart';
 
 enum MessageStatus { pending, sent, delivered, failed }
 
 class Message {
+  static const Object _unset = Object();
+
   final Uint8List senderKey;
   final String text;
   final DateTime timestamp;
   final bool isOutgoing;
   final bool isCli;
   final MessageStatus status;
+  final String? originalText;
+  final String? translatedText;
+  final String? translatedLanguageCode;
+  final MessageTranslationStatus translationStatus;
+  final String? translationModelId;
 
   // NEW: Retry logic fields
-  final String? messageId;
+  final String messageId;
   final int retryCount;
   final int? estimatedTimeoutMs;
   final int? expectedAckHash;
@@ -33,7 +41,12 @@ class Message {
     required this.isOutgoing,
     this.isCli = false,
     this.status = MessageStatus.pending,
-    this.messageId,
+    String? messageId,
+    this.originalText,
+    this.translatedText,
+    this.translatedLanguageCode,
+    this.translationStatus = MessageTranslationStatus.none,
+    this.translationModelId,
     this.retryCount = 0,
     this.estimatedTimeoutMs,
     this.expectedAckHash,
@@ -45,7 +58,10 @@ class Message {
     Uint8List? fourByteRoomContactKey,
     Map<String, int>? reactions,
     Map<String, MessageStatus>? reactionStatuses,
-  }) : pathBytes = pathBytes ?? Uint8List(0),
+  }) : messageId =
+           messageId ??
+           '${timestamp.millisecondsSinceEpoch}_${pubKeyToHex(senderKey)}_${text.hashCode}',
+       pathBytes = pathBytes ?? Uint8List(0),
        fourByteRoomContactKey = fourByteRoomContactKey ?? Uint8List(0),
        reactions = reactions ?? {},
        reactionStatuses = reactionStatuses ?? {};
@@ -63,6 +79,11 @@ class Message {
     int? pathLength,
     Uint8List? pathBytes,
     bool? isCli,
+    Object? originalText = _unset,
+    Object? translatedText = _unset,
+    Object? translatedLanguageCode = _unset,
+    MessageTranslationStatus? translationStatus,
+    Object? translationModelId = _unset,
     Map<String, int>? reactions,
     Map<String, MessageStatus>? reactionStatuses,
     Uint8List? fourByteRoomContactKey,
@@ -75,6 +96,19 @@ class Message {
       isCli: isCli ?? this.isCli,
       status: status ?? this.status,
       messageId: messageId,
+      originalText: originalText == _unset
+          ? this.originalText
+          : originalText as String?,
+      translatedText: translatedText == _unset
+          ? this.translatedText
+          : translatedText as String?,
+      translatedLanguageCode: translatedLanguageCode == _unset
+          ? this.translatedLanguageCode
+          : translatedLanguageCode as String?,
+      translationStatus: translationStatus ?? this.translationStatus,
+      translationModelId: translationModelId == _unset
+          ? this.translationModelId
+          : translationModelId as String?,
       retryCount: retryCount ?? this.retryCount,
       estimatedTimeoutMs: estimatedTimeoutMs ?? this.estimatedTimeoutMs,
       expectedAckHash: expectedAckHash ?? this.expectedAckHash,
@@ -124,12 +158,18 @@ class Message {
   static Message outgoing(
     Uint8List recipientKey,
     String text, {
+    String? originalText,
+    String? translatedLanguageCode,
+    String? translationModelId,
     int? pathLength,
     Uint8List? pathBytes,
   }) {
     return Message(
       senderKey: recipientKey,
       text: text,
+      originalText: originalText,
+      translatedLanguageCode: translatedLanguageCode,
+      translationModelId: translationModelId,
       timestamp: DateTime.now(),
       isOutgoing: true,
       isCli: false,
diff --git a/lib/models/translation_support.dart b/lib/models/translation_support.dart
new file mode 100644
index 0000000..7e58c76
--- /dev/null
+++ b/lib/models/translation_support.dart
@@ -0,0 +1,136 @@
+enum MessageTranslationStatus { none, pending, completed, failed, skipped }
+
+extension MessageTranslationStatusValue on MessageTranslationStatus {
+  String get value {
+    switch (this) {
+      case MessageTranslationStatus.pending:
+        return 'pending';
+      case MessageTranslationStatus.completed:
+        return 'completed';
+      case MessageTranslationStatus.failed:
+        return 'failed';
+      case MessageTranslationStatus.skipped:
+        return 'skipped';
+      case MessageTranslationStatus.none:
+        return 'none';
+    }
+  }
+}
+
+MessageTranslationStatus parseMessageTranslationStatus(dynamic value) {
+  if (value is! String) {
+    return MessageTranslationStatus.none;
+  }
+  for (final status in MessageTranslationStatus.values) {
+    if (status.value == value) {
+      return status;
+    }
+  }
+  return MessageTranslationStatus.none;
+}
+
+class TranslationModelRecord {
+  final String id;
+  final String name;
+  final String sourceUrl;
+  final String localPath;
+  final DateTime downloadedAt;
+  final int fileSizeBytes;
+
+  const TranslationModelRecord({
+    required this.id,
+    required this.name,
+    required this.sourceUrl,
+    required this.localPath,
+    required this.downloadedAt,
+    required this.fileSizeBytes,
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'source_url': sourceUrl,
+      'local_path': localPath,
+      'downloaded_at': downloadedAt.millisecondsSinceEpoch,
+      'file_size_bytes': fileSizeBytes,
+    };
+  }
+
+  factory TranslationModelRecord.fromJson(Map<String, dynamic> json) {
+    return TranslationModelRecord(
+      id: json['id'] as String? ?? '',
+      name: json['name'] as String? ?? '',
+      sourceUrl: json['source_url'] as String? ?? '',
+      localPath: json['local_path'] as String? ?? '',
+      downloadedAt: DateTime.fromMillisecondsSinceEpoch(
+        json['downloaded_at'] as int? ?? 0,
+      ),
+      fileSizeBytes: json['file_size_bytes'] as int? ?? 0,
+    );
+  }
+}
+
+String translationModelFriendlyName(TranslationModelRecord model) {
+  switch (model.id) {
+    case 'hy-mt1.5-1.8b-q4_k_m':
+      return 'Tencent HY-MT 1.5 1.8B Q4_K_M';
+    case 'hy-mt1.5-1.8b-q6_k':
+      return 'Tencent HY-MT 1.5 1.8B Q6_K';
+    default:
+      final trimmed = model.name.trim();
+      if (trimmed.endsWith('.gguf')) {
+        return trimmed.substring(0, trimmed.length - 5);
+      }
+      return trimmed.isEmpty ? model.id : trimmed;
+  }
+}
+
+class TranslationLanguageOption {
+  final String code;
+  final String label;
+
+  const TranslationLanguageOption({required this.code, required this.label});
+}
+
+const List<TranslationLanguageOption> supportedTranslationLanguages = [
+  TranslationLanguageOption(code: 'bg', label: 'Bulgarian'),
+  TranslationLanguageOption(code: 'de', label: 'German'),
+  TranslationLanguageOption(code: 'en', label: 'English'),
+  TranslationLanguageOption(code: 'es', label: 'Spanish'),
+  TranslationLanguageOption(code: 'fr', label: 'French'),
+  TranslationLanguageOption(code: 'hu', label: 'Hungarian'),
+  TranslationLanguageOption(code: 'it', label: 'Italian'),
+  TranslationLanguageOption(code: 'ja', label: 'Japanese'),
+  TranslationLanguageOption(code: 'ko', label: 'Korean'),
+  TranslationLanguageOption(code: 'nl', label: 'Dutch'),
+  TranslationLanguageOption(code: 'pl', label: 'Polish'),
+  TranslationLanguageOption(code: 'pt', label: 'Portuguese'),
+  TranslationLanguageOption(code: 'ru', label: 'Russian'),
+  TranslationLanguageOption(code: 'sk', label: 'Slovak'),
+  TranslationLanguageOption(code: 'sl', label: 'Slovenian'),
+  TranslationLanguageOption(code: 'sv', label: 'Swedish'),
+  TranslationLanguageOption(code: 'uk', label: 'Ukrainian'),
+  TranslationLanguageOption(code: 'zh', label: 'Chinese'),
+];
+
+final List<TranslationModelRecord> translationPresetModels = [
+  TranslationModelRecord(
+    id: 'hy-mt1.5-1.8b-q4_k_m',
+    name: 'HY-MT1.5-1.8B-Q4_K_M.gguf',
+    sourceUrl:
+        'https://huggingface.co/tencent/HY-MT1.5-1.8B-GGUF/resolve/main/HY-MT1.5-1.8B-Q4_K_M.gguf?download=true',
+    localPath: '',
+    downloadedAt: DateTime.fromMillisecondsSinceEpoch(0),
+    fileSizeBytes: 0,
+  ),
+  TranslationModelRecord(
+    id: 'hy-mt1.5-1.8b-q6_k',
+    name: 'HY-MT1.5-1.8B-Q6_K.gguf',
+    sourceUrl:
+        'https://huggingface.co/tencent/HY-MT1.5-1.8B-GGUF/resolve/main/HY-MT1.5-1.8B-Q6_K.gguf?download=true',
+    localPath: '',
+    downloadedAt: DateTime.fromMillisecondsSinceEpoch(0),
+    fileSizeBytes: 0,
+  ),
+];
diff --git a/lib/screens/app_settings_screen.dart b/lib/screens/app_settings_screen.dart
index 82b0f1f..ac6f4cb 100644
--- a/lib/screens/app_settings_screen.dart
+++ b/lib/screens/app_settings_screen.dart
@@ -1,11 +1,14 @@
+import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 import '../connector/meshcore_connector.dart';
 import '../l10n/l10n.dart';
 import '../models/app_settings.dart';
+import '../models/translation_support.dart';
 import '../services/app_settings_service.dart';
 import '../services/notification_service.dart';
+import '../services/translation_service.dart';
 import '../widgets/adaptive_app_bar_title.dart';
 import 'map_cache_screen.dart';
 
@@ -21,26 +24,46 @@ class AppSettingsScreen extends StatelessWidget {
       ),
       body: SafeArea(
         top: false,
-        child: Consumer2<AppSettingsService, MeshCoreConnector>(
-          builder: (context, settingsService, connector, child) {
-            return ListView(
-              padding: const EdgeInsets.all(16),
-              children: [
-                _buildAppearanceCard(context, settingsService),
-                const SizedBox(height: 16),
-                _buildNotificationsCard(context, settingsService),
-                const SizedBox(height: 16),
-                _buildMessagingCard(context, settingsService),
-                const SizedBox(height: 16),
-                _buildBatteryCard(context, settingsService, connector),
-                const SizedBox(height: 16),
-                _buildMapSettingsCard(context, settingsService),
-                const SizedBox(height: 16),
-                _buildDebugCard(context, settingsService),
-              ],
-            );
-          },
-        ),
+        child:
+            Consumer3<
+              AppSettingsService,
+              MeshCoreConnector,
+              TranslationService
+            >(
+              builder:
+                  (
+                    context,
+                    settingsService,
+                    connector,
+                    translationService,
+                    child,
+                  ) {
+                    return ListView(
+                      padding: const EdgeInsets.all(16),
+                      children: [
+                        _buildAppearanceCard(context, settingsService),
+                        const SizedBox(height: 16),
+                        _buildNotificationsCard(context, settingsService),
+                        const SizedBox(height: 16),
+                        _buildMessagingCard(context, settingsService),
+                        const SizedBox(height: 16),
+                        if (!kIsWeb) ...[
+                          _buildTranslationCard(
+                            context,
+                            settingsService,
+                            translationService,
+                          ),
+                          const SizedBox(height: 16),
+                        ],
+                        _buildBatteryCard(context, settingsService, connector),
+                        const SizedBox(height: 16),
+                        _buildMapSettingsCard(context, settingsService),
+                        const SizedBox(height: 16),
+                        _buildDebugCard(context, settingsService),
+                      ],
+                    );
+                  },
+            ),
       ),
     );
   }
@@ -530,6 +553,211 @@ class AppSettingsScreen extends StatelessWidget {
     );
   }
 
+  Widget _buildTranslationCard(
+    BuildContext context,
+    AppSettingsService settingsService,
+    TranslationService translationService,
+  ) {
+    final settings = settingsService.settings;
+    return Card(
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
+            child: Text(
+              context.l10n.translation_title,
+              style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
+            ),
+          ),
+          SwitchListTile(
+            secondary: const Icon(Icons.translate),
+            title: Text(context.l10n.translation_enableTitle),
+            subtitle: Text(context.l10n.translation_enableSubtitle),
+            value: settings.translationEnabled,
+            onChanged: settingsService.setTranslationEnabled,
+          ),
+          const Divider(height: 1),
+          SwitchListTile(
+            secondary: const Icon(Icons.outgoing_mail),
+            title: Text(context.l10n.translation_composerTitle),
+            subtitle: Text(context.l10n.translation_composerSubtitle),
+            value: settings.composerTranslationEnabled,
+            onChanged: settingsService.setComposerTranslationEnabled,
+          ),
+          const Divider(height: 1),
+          ListTile(
+            leading: const Icon(Icons.language),
+            title: Text(context.l10n.translation_targetLanguage),
+            subtitle: Text(
+              _translationLanguageLabel(
+                context,
+                settings.translationTargetLanguageCode,
+              ),
+            ),
+            trailing: const Icon(Icons.chevron_right),
+            onTap: () =>
+                _showTranslationLanguageDialog(context, settingsService),
+          ),
+          const Divider(height: 1),
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 12, 16, 4),
+            child: DropdownButtonFormField<String>(
+              initialValue: settings.translationSelectedModelId,
+              isExpanded: true,
+              decoration: InputDecoration(
+                labelText: context.l10n.translation_downloadedModelLabel,
+                border: const OutlineInputBorder(),
+              ),
+              items: [
+                for (final model in settings.translationDownloadedModels)
+                  DropdownMenuItem(
+                    value: model.id,
+                    child: Text(translationModelFriendlyName(model)),
+                  ),
+              ],
+              onChanged: settings.translationDownloadedModels.isEmpty
+                  ? null
+                  : (value) {
+                      settingsService.setTranslationSelectedModelId(value);
+                    },
+            ),
+          ),
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 12, 16, 4),
+            child: DropdownButtonFormField<String>(
+              initialValue: null,
+              isExpanded: true,
+              decoration: InputDecoration(
+                labelText: context.l10n.translation_presetModelLabel,
+                border: const OutlineInputBorder(),
+              ),
+              items: [
+                for (final preset in translationPresetModels)
+                  DropdownMenuItem(
+                    value: preset.sourceUrl,
+                    child: Text(translationModelFriendlyName(preset)),
+                  ),
+              ],
+              onChanged: translationService.isBusy
+                  ? null
+                  : (value) async {
+                      if (value == null) return;
+                      final preset = translationPresetModels.firstWhere(
+                        (entry) => entry.sourceUrl == value,
+                      );
+                      await _downloadTranslationModel(
+                        context,
+                        translationService,
+                        settingsService,
+                        sourceUrl: preset.sourceUrl,
+                        fileName: preset.name,
+                        id: preset.id,
+                      );
+                    },
+            ),
+          ),
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 12, 16, 16),
+            child: Column(
+              children: [
+                _TranslationUrlField(
+                  initialValue: settings.translationModelSourceUrl ?? '',
+                  onChanged: settingsService.setTranslationModelSourceUrl,
+                  onDownload: translationService.isBusy
+                      ? null
+                      : (url) => _downloadTranslationModel(
+                          context,
+                          translationService,
+                          settingsService,
+                          sourceUrl: url,
+                        ),
+                  downloadLabel: translationService.isDownloading
+                      ? context.l10n.translation_downloading
+                      : translationService.isBusy
+                      ? context.l10n.translation_working
+                      : context.l10n.translation_downloadModel,
+                  isDownloading: translationService.isDownloading,
+                  onCancel: translationService.cancelDownload,
+                  labelText: context.l10n.translation_manualUrlLabel,
+                  stopLabel: context.l10n.translation_stop,
+                ),
+                if (translationService.isDownloading) ...[
+                  const SizedBox(height: 12),
+                  LinearProgressIndicator(
+                    value:
+                        translationService.downloadFileName ==
+                            'Merging chunks...'
+                        ? null
+                        : translationService.downloadProgress,
+                  ),
+                  const SizedBox(height: 8),
+                  Align(
+                    alignment: Alignment.centerLeft,
+                    child: Text(
+                      _downloadProgressLabel(context, translationService),
+                      style: Theme.of(context).textTheme.bodySmall,
+                    ),
+                  ),
+                ],
+                if (settings.translationDownloadedModels.isNotEmpty) ...[
+                  const SizedBox(height: 16),
+                  Align(
+                    alignment: Alignment.centerLeft,
+                    child: Text(
+                      context.l10n.translation_downloadedModels,
+                      style: Theme.of(context).textTheme.titleSmall,
+                    ),
+                  ),
+                  const SizedBox(height: 8),
+                  for (final model in settings.translationDownloadedModels)
+                    Card.outlined(
+                      margin: const EdgeInsets.only(bottom: 8),
+                      child: ListTile(
+                        contentPadding: const EdgeInsets.symmetric(
+                          horizontal: 12,
+                          vertical: 4,
+                        ),
+                        leading: Icon(
+                          model.id == settings.translationSelectedModelId
+                              ? Icons.check_circle
+                              : Icons.memory_outlined,
+                        ),
+                        title: Text(translationModelFriendlyName(model)),
+                        subtitle: Text(_downloadedModelLabel(model)),
+                        trailing: IconButton(
+                          tooltip: context.l10n.translation_deleteModel,
+                          onPressed: translationService.isBusy
+                              ? null
+                              : () => _deleteTranslationModel(
+                                  context,
+                                  translationService,
+                                  model,
+                                ),
+                          icon: const Icon(Icons.delete_outline),
+                        ),
+                        onTap: () => settingsService
+                            .setTranslationSelectedModelId(model.id),
+                      ),
+                    ),
+                ],
+                if (translationService.lastError != null) ...[
+                  const SizedBox(height: 8),
+                  Text(
+                    translationService.lastError!,
+                    style: TextStyle(
+                      color: Theme.of(context).colorScheme.error,
+                    ),
+                  ),
+                ],
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
   // Fixed rendering issues
   Widget _buildBatteryCard(
     BuildContext context,
@@ -910,6 +1138,124 @@ class AppSettingsScreen extends StatelessWidget {
     );
   }
 
+  void _showTranslationLanguageDialog(
+    BuildContext context,
+    AppSettingsService settingsService,
+  ) {
+    showDialog(
+      context: context,
+      builder: (context) => _TranslationLanguageDialogContent(
+        currentLanguageCode:
+            settingsService.settings.translationTargetLanguageCode,
+        onLanguageSelected: (value) {
+          settingsService.setTranslationTargetLanguageCode(value);
+          Navigator.pop(context);
+        },
+      ),
+    );
+  }
+
+  Future<void> _downloadTranslationModel(
+    BuildContext context,
+    TranslationService translationService,
+    AppSettingsService settingsService, {
+    required String sourceUrl,
+    String? fileName,
+    String? id,
+  }) async {
+    if (sourceUrl.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(context.l10n.translation_enterUrlFirst)),
+      );
+      return;
+    }
+    try {
+      await translationService.downloadModel(
+        sourceUrl: sourceUrl,
+        fileName: fileName,
+        id: id,
+      );
+      if (!context.mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(context.l10n.translation_modelDownloaded)),
+      );
+      await settingsService.setTranslationEnabled(true);
+    } on TranslationDownloadCancelled {
+      if (!context.mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(context.l10n.translation_downloadStopped)),
+      );
+    } catch (error) {
+      if (!context.mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(
+            context.l10n.translation_downloadFailed(error.toString()),
+          ),
+        ),
+      );
+    }
+  }
+
+  String _translationLanguageLabel(BuildContext context, String? languageCode) {
+    if (languageCode == null || languageCode.isEmpty) {
+      return context.l10n.translation_useAppLanguage;
+    }
+    for (final option in supportedTranslationLanguages) {
+      if (option.code == languageCode) {
+        return option.label;
+      }
+    }
+    return languageCode.toUpperCase();
+  }
+
+  String _downloadProgressLabel(
+    BuildContext context,
+    TranslationService translationService,
+  ) {
+    final fileName = translationService.downloadFileName ?? 'Model';
+    if (fileName == 'Merging chunks...') {
+      return context.l10n.translation_mergingChunks;
+    }
+    final currentMb = translationService.downloadedBytes / (1024 * 1024);
+    final totalBytes = translationService.downloadTotalBytes;
+    if (totalBytes == null || totalBytes <= 0) {
+      return '$fileName: ${currentMb.toStringAsFixed(1)} MB';
+    }
+    final totalMb = totalBytes / (1024 * 1024);
+    final percent = ((translationService.downloadProgress ?? 0) * 100)
+        .toStringAsFixed(0);
+    return '$fileName: ${currentMb.toStringAsFixed(1)} / ${totalMb.toStringAsFixed(1)} MB ($percent%)';
+  }
+
+  Future<void> _deleteTranslationModel(
+    BuildContext context,
+    TranslationService translationService,
+    TranslationModelRecord model,
+  ) async {
+    try {
+      await translationService.removeModel(model);
+      if (!context.mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          // TODO: l10n
+          content: Text('Deleted ${translationModelFriendlyName(model)}.'),
+        ),
+      );
+    } catch (error) {
+      if (!context.mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('Delete failed: $error')),
+      ); // TODO: l10n
+    }
+  }
+
+  String _downloadedModelLabel(TranslationModelRecord model) {
+    final sizeMb = model.fileSizeBytes / (1024 * 1024);
+    final source = model.sourceUrl.isEmpty ? model.name : model.sourceUrl;
+    return '${sizeMb.toStringAsFixed(1)} MB • $source';
+  }
+
   Widget _buildDebugCard(
     BuildContext context,
     AppSettingsService settingsService,
@@ -950,3 +1296,176 @@ class AppSettingsScreen extends StatelessWidget {
     );
   }
 }
+
+/// Owns the [TextEditingController] for the manual model URL field so it
+/// survives rebuilds of the parent [Consumer3].
+class _TranslationUrlField extends StatefulWidget {
+  const _TranslationUrlField({
+    required this.initialValue,
+    required this.onChanged,
+    required this.onDownload,
+    required this.downloadLabel,
+    required this.isDownloading,
+    required this.onCancel,
+    required this.labelText,
+    required this.stopLabel,
+  });
+
+  final String initialValue;
+  final ValueChanged<String> onChanged;
+  final void Function(String url)? onDownload;
+  final String downloadLabel;
+  final bool isDownloading;
+  final VoidCallback onCancel;
+  final String labelText;
+  final String stopLabel;
+
+  @override
+  State<_TranslationUrlField> createState() => _TranslationUrlFieldState();
+}
+
+class _TranslationUrlFieldState extends State<_TranslationUrlField> {
+  late final TextEditingController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = TextEditingController(text: widget.initialValue);
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        TextField(
+          controller: _controller,
+          decoration: InputDecoration(
+            labelText: widget.labelText,
+            border: const OutlineInputBorder(),
+          ),
+          onChanged: widget.onChanged,
+        ),
+        const SizedBox(height: 8),
+        Row(
+          children: [
+            Expanded(
+              child: FilledButton.icon(
+                onPressed: widget.onDownload == null
+                    ? null
+                    : () => widget.onDownload!(_controller.text.trim()),
+                icon: const Icon(Icons.download),
+                label: Text(widget.downloadLabel),
+              ),
+            ),
+            if (widget.isDownloading) ...[
+              const SizedBox(width: 8),
+              OutlinedButton.icon(
+                onPressed: widget.onCancel,
+                icon: const Icon(Icons.stop_circle_outlined),
+                label: Text(widget.stopLabel),
+              ),
+            ],
+          ],
+        ),
+      ],
+    );
+  }
+}
+
+/// Dialog content for choosing the translation target language.
+/// Owns the search [TextEditingController] so it is properly disposed.
+class _TranslationLanguageDialogContent extends StatefulWidget {
+  const _TranslationLanguageDialogContent({
+    required this.currentLanguageCode,
+    required this.onLanguageSelected,
+  });
+
+  final String? currentLanguageCode;
+  final ValueChanged<String> onLanguageSelected;
+
+  @override
+  State<_TranslationLanguageDialogContent> createState() =>
+      _TranslationLanguageDialogContentState();
+}
+
+class _TranslationLanguageDialogContentState
+    extends State<_TranslationLanguageDialogContent> {
+  late final TextEditingController _searchController;
+  List<TranslationLanguageOption> _filtered = supportedTranslationLanguages;
+
+  @override
+  void initState() {
+    super.initState();
+    _searchController = TextEditingController();
+  }
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: Text(context.l10n.translation_targetLanguage),
+      content: SizedBox(
+        width: 360,
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            TextField(
+              controller: _searchController,
+              decoration: const InputDecoration(
+                prefixIcon: Icon(Icons.search),
+                border: OutlineInputBorder(),
+              ),
+              onChanged: (value) {
+                final normalized = value.trim().toLowerCase();
+                setState(() {
+                  _filtered = supportedTranslationLanguages.where((option) {
+                    return option.label.toLowerCase().contains(normalized) ||
+                        option.code.toLowerCase().contains(normalized);
+                  }).toList();
+                });
+              },
+            ),
+            const SizedBox(height: 12),
+            Flexible(
+              child: RadioGroup<String>(
+                groupValue: widget.currentLanguageCode,
+                onChanged: (value) {
+                  if (value == null) return;
+                  widget.onLanguageSelected(value);
+                },
+                child: ListView(
+                  shrinkWrap: true,
+                  children: [
+                    for (final option in _filtered)
+                      RadioListTile<String>(
+                        value: option.code,
+                        title: Text(option.label),
+                        subtitle: Text(option.code.toUpperCase()),
+                      ),
+                  ],
+                ),
+              ),
+            ),
+          ],
+        ),
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.pop(context),
+          child: Text(context.l10n.common_close),
+        ),
+      ],
+    );
+  }
+}
diff --git a/lib/screens/channel_chat_screen.dart b/lib/screens/channel_chat_screen.dart
index 12e98d6..f413694 100644
--- a/lib/screens/channel_chat_screen.dart
+++ b/lib/screens/channel_chat_screen.dart
@@ -11,22 +11,25 @@ import '../connector/meshcore_connector.dart';
 import '../utils/platform_info.dart';
 import '../helpers/chat_scroll_controller.dart';
 import '../connector/meshcore_protocol.dart';
-import '../helpers/link_handler.dart';
 import '../helpers/reaction_helper.dart';
 import '../helpers/utf8_length_limiter.dart';
 import '../l10n/l10n.dart';
 import '../models/channel.dart';
 import '../models/channel_message.dart';
+import '../models/translation_support.dart';
 import '../services/app_settings_service.dart';
 import '../services/chat_text_scale_service.dart';
+import '../services/translation_service.dart';
 import '../utils/emoji_utils.dart';
 import '../widgets/chat_zoom_wrapper.dart';
 import '../widgets/emoji_picker.dart';
 import '../widgets/gif_message.dart';
 import '../widgets/jump_to_bottom_button.dart';
 import '../widgets/gif_picker.dart';
+import '../widgets/message_translation_button.dart';
 import '../widgets/message_status_icon.dart';
 import '../widgets/radio_stats_entry.dart';
+import '../widgets/translated_message_content.dart';
 import 'channel_message_path_screen.dart';
 import 'map_screen.dart';
 
@@ -354,6 +357,14 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     final isOutgoing = message.isOutgoing;
     final gifId = _parseGifId(message.text);
     final poi = _parsePoiMessage(message.text);
+    final translatedDisplayText =
+        message.translatedText != null &&
+            message.translatedText!.trim().isNotEmpty
+        ? message.translatedText!.trim()
+        : message.text;
+    final originalDisplayText = message.isOutgoing
+        ? message.originalText
+        : (translatedDisplayText != message.text ? message.text : null);
     final displayPath = message.pathBytes.isNotEmpty
         ? message.pathBytes
         : (message.pathVariants.isNotEmpty
@@ -504,12 +515,18 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                           crossAxisAlignment: CrossAxisAlignment.end,
                           children: [
                             Flexible(
-                              child: LinkHandler.buildLinkifyText(
-                                context: context,
-                                text: message.text,
+                              child: TranslatedMessageContent(
+                                displayText: translatedDisplayText,
+                                originalText: originalDisplayText,
                                 style: TextStyle(
                                   fontSize: bodyFontSize * textScale,
                                 ),
+                                originalStyle: TextStyle(
+                                  fontSize: bodyFontSize * textScale,
+                                  fontStyle: FontStyle.italic,
+                                  color: Theme.of(context).colorScheme.onSurface
+                                      .withValues(alpha: 0.72),
+                                ),
                               ),
                             ),
                             if (!enableTracing && isOutgoing) ...[
@@ -994,6 +1011,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
   Widget _buildMessageComposer() {
     final connector = context.watch<MeshCoreConnector>();
     final maxBytes = maxChannelMessageBytes(connector.selfName);
+    final settings = context.watch<AppSettingsService>().settings;
     return Column(
       mainAxisSize: MainAxisSize.min,
       children: [
@@ -1025,6 +1043,12 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                 onPressed: () => _showGifPicker(context),
                 tooltip: context.l10n.chat_sendGif,
               ),
+              if (settings.translationEnabled)
+                MessageTranslationButton(
+                  enabled: settings.composerTranslationEnabled,
+                  languageCode: settings.translationTargetLanguageCode,
+                  onPressed: _showTranslationOptions,
+                ),
               Expanded(
                 child: ValueListenableBuilder<TextEditingValue>(
                   valueListenable: _textController,
@@ -1112,7 +1136,19 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     );
   }
 
-  void _sendMessage() {
+  Future<void> _showTranslationOptions() async {
+    final settingsService = context.read<AppSettingsService>();
+    final settings = settingsService.settings;
+    await showMessageTranslationSheet(
+      context: context,
+      enabled: settings.composerTranslationEnabled,
+      selectedLanguageCode: settings.translationTargetLanguageCode,
+      onEnabledChanged: settingsService.setComposerTranslationEnabled,
+      onLanguageSelected: settingsService.setTranslationTargetLanguageCode,
+    );
+  }
+
+  Future<void> _sendMessage() async {
     final text = _textController.text.trim();
     if (text.isEmpty) return;
 
@@ -1126,11 +1162,46 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     }
     _lastChannelSendAt = now;
 
+    // Capture reply state before clearing, then clear input synchronously
+    // to prevent double-send during async translation.
+    final replyingTo = _replyingToMessage;
+    _textController.clear();
+    _cancelReply();
+    _textFieldFocusNode.requestFocus();
+
     final connector = context.read<MeshCoreConnector>();
+    final settings = context.read<AppSettingsService>().settings;
+    final translationService = context.read<TranslationService>();
 
     String messageText = text;
-    if (_replyingToMessage != null) {
-      messageText = '@[${_replyingToMessage!.senderName}] $text';
+    String? originalText;
+    String? translatedLanguageCode;
+    String? translationModelId;
+    if (settings.translationEnabled) {
+      final targetLanguageCode = translationService.resolvedTargetLanguageCode(
+        settings.languageOverride,
+      );
+      if (translationService.shouldTranslateOutgoing(
+        text: text,
+        targetLanguageCode: targetLanguageCode,
+      )) {
+        final result = await translationService.translateOutgoingText(
+          text: text,
+          targetLanguageCode: targetLanguageCode,
+        );
+        if (!mounted) return;
+        if (result != null &&
+            result.status == MessageTranslationStatus.completed &&
+            result.translatedText.isNotEmpty) {
+          messageText = result.translatedText;
+          originalText = text;
+          translatedLanguageCode = result.targetLanguageCode;
+          translationModelId = result.modelId;
+        }
+      }
+    }
+    if (replyingTo != null) {
+      messageText = '@[${replyingTo.senderName}] $messageText';
     }
 
     final maxBytes = maxChannelMessageBytes(connector.selfName);
@@ -1141,10 +1212,13 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
       return;
     }
 
-    connector.sendChannelMessage(widget.channel, messageText);
-    _textController.clear();
-    _cancelReply();
-    _textFieldFocusNode.requestFocus();
+    connector.sendChannelMessage(
+      widget.channel,
+      messageText,
+      originalText: originalText,
+      translatedLanguageCode: translatedLanguageCode,
+      translationModelId: translationModelId,
+    );
   }
 
   String _formatTime(DateTime time) {
diff --git a/lib/screens/chat_screen.dart b/lib/screens/chat_screen.dart
index aecdc81..5f9a2ee 100644
--- a/lib/screens/chat_screen.dart
+++ b/lib/screens/chat_screen.dart
@@ -16,16 +16,17 @@ import '../connector/meshcore_protocol.dart';
 import '../helpers/reaction_helper.dart';
 import '../widgets/message_status_icon.dart';
 import '../helpers/chat_scroll_controller.dart';
-import '../helpers/link_handler.dart';
 import '../helpers/path_helper.dart';
 import '../helpers/utf8_length_limiter.dart';
 import '../models/channel_message.dart';
 import '../models/contact.dart';
 import '../models/message.dart';
 import '../models/path_history.dart';
+import '../models/translation_support.dart';
 import '../services/app_settings_service.dart';
 import '../services/chat_text_scale_service.dart';
 import '../services/path_history_service.dart';
+import '../services/translation_service.dart';
 import '../widgets/chat_zoom_wrapper.dart';
 import '../widgets/elements_ui.dart';
 import 'channel_message_path_screen.dart';
@@ -35,8 +36,10 @@ import '../widgets/emoji_picker.dart';
 import '../widgets/gif_message.dart';
 import '../widgets/jump_to_bottom_button.dart';
 import '../widgets/gif_picker.dart';
+import '../widgets/message_translation_button.dart';
 import '../widgets/path_selection_dialog.dart';
 import '../widgets/radio_stats_entry.dart';
+import '../widgets/translated_message_content.dart';
 import '../utils/app_logger.dart';
 import '../l10n/l10n.dart';
 import 'telemetry_screen.dart';
@@ -495,6 +498,7 @@ class _ChatScreenState extends State<ChatScreen> {
   Widget _buildInputBar(MeshCoreConnector connector) {
     final maxBytes = maxContactMessageBytes();
     final colorScheme = Theme.of(context).colorScheme;
+    final settings = context.watch<AppSettingsService>().settings;
     return Container(
       padding: const EdgeInsets.all(8),
       decoration: BoxDecoration(
@@ -509,6 +513,12 @@ class _ChatScreenState extends State<ChatScreen> {
               onPressed: () => _showGifPicker(context),
               tooltip: context.l10n.chat_sendGif,
             ),
+            if (settings.translationEnabled)
+              MessageTranslationButton(
+                enabled: settings.composerTranslationEnabled,
+                languageCode: settings.translationTargetLanguageCode,
+                onPressed: _showTranslationOptions,
+              ),
             Expanded(
               child: ValueListenableBuilder<TextEditingValue>(
                 valueListenable: _textController,
@@ -606,7 +616,19 @@ class _ChatScreenState extends State<ChatScreen> {
     );
   }
 
-  void _sendMessage(MeshCoreConnector connector) {
+  Future<void> _showTranslationOptions() async {
+    final settingsService = context.read<AppSettingsService>();
+    final settings = settingsService.settings;
+    await showMessageTranslationSheet(
+      context: context,
+      enabled: settings.composerTranslationEnabled,
+      selectedLanguageCode: settings.translationTargetLanguageCode,
+      onEnabledChanged: settingsService.setComposerTranslationEnabled,
+      onLanguageSelected: settingsService.setTranslationTargetLanguageCode,
+    );
+  }
+
+  Future<void> _sendMessage(MeshCoreConnector connector) async {
     final text = _textController.text.trim();
     if (text.isEmpty) return;
 
@@ -620,17 +642,54 @@ class _ChatScreenState extends State<ChatScreen> {
     }
     _lastTextSendAt = now;
 
+    // Clear input synchronously to prevent double-send
+    _textController.clear();
+    _textFieldFocusNode.requestFocus();
+
+    final settings = context.read<AppSettingsService>().settings;
+    final translationService = context.read<TranslationService>();
+    var outgoingText = text;
+    String? originalText;
+    String? translatedLanguageCode;
+    String? translationModelId;
+    if (settings.translationEnabled) {
+      final targetLanguageCode = translationService.resolvedTargetLanguageCode(
+        settings.languageOverride,
+      );
+      if (translationService.shouldTranslateOutgoing(
+        text: text,
+        targetLanguageCode: targetLanguageCode,
+      )) {
+        final result = await translationService.translateOutgoingText(
+          text: text,
+          targetLanguageCode: targetLanguageCode,
+        );
+        if (!mounted) return;
+        if (result != null &&
+            result.status == MessageTranslationStatus.completed &&
+            result.translatedText.isNotEmpty) {
+          outgoingText = result.translatedText;
+          originalText = text;
+          translatedLanguageCode = result.targetLanguageCode;
+          translationModelId = result.modelId;
+        }
+      }
+    }
     final maxBytes = maxContactMessageBytes();
-    if (utf8.encode(text).length > maxBytes) {
+    if (utf8.encode(outgoingText).length > maxBytes) {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text(context.l10n.chat_messageTooLong(maxBytes))),
       );
       return;
     }
 
-    connector.sendMessage(_resolveContact(connector), text);
-    _textController.clear();
-    _textFieldFocusNode.requestFocus();
+    connector.sendMessage(
+      _resolveContact(connector),
+      outgoingText,
+      originalText: originalText,
+      translatedLanguageCode: translatedLanguageCode,
+      translationModelId: translationModelId,
+    );
   }
 
   void _showPathHistory(BuildContext context) {
@@ -1533,6 +1592,14 @@ class _MessageBubble extends StatelessWidget {
     if (isRoomServer && !isOutgoing) {
       messageText = message.text.substring(4.clamp(0, message.text.length));
     }
+    final translatedDisplayText =
+        message.translatedText != null &&
+            message.translatedText!.trim().isNotEmpty
+        ? message.translatedText!.trim()
+        : messageText;
+    final originalDisplayText = isOutgoing
+        ? message.originalText
+        : (translatedDisplayText != messageText ? messageText : null);
     return Padding(
       padding: const EdgeInsets.symmetric(vertical: 4),
       child: Column(
@@ -1662,13 +1729,17 @@ class _MessageBubble extends StatelessWidget {
                             crossAxisAlignment: CrossAxisAlignment.end,
                             children: [
                               Flexible(
-                                child: LinkHandler.buildLinkifyText(
-                                  context: context,
-                                  text: messageText,
+                                child: TranslatedMessageContent(
+                                  displayText: translatedDisplayText,
+                                  originalText: originalDisplayText,
                                   style: TextStyle(
                                     color: textColor,
                                     fontSize: bodyFontSize * textScale,
                                   ),
+                                  originalStyle: TextStyle(
+                                    color: textColor.withValues(alpha: 0.78),
+                                    fontSize: bodyFontSize * textScale,
+                                  ),
                                 ),
                               ),
                               if (!enableTracing && isOutgoing) ...[
diff --git a/lib/services/app_settings_service.dart b/lib/services/app_settings_service.dart
index cb69469..283ce72 100644
--- a/lib/services/app_settings_service.dart
+++ b/lib/services/app_settings_service.dart
@@ -1,6 +1,7 @@
 import 'dart:convert';
 import 'package:flutter/foundation.dart';
 import '../models/app_settings.dart';
+import '../models/translation_support.dart';
 import '../storage/prefs_manager.dart';
 import '../utils/app_logger.dart';
 
@@ -222,4 +223,34 @@ class AppSettingsService extends ChangeNotifier {
   Future<void> setJumpToOldestUnread(bool value) async {
     await updateSettings(_settings.copyWith(jumpToOldestUnread: value));
   }
+
+  Future<void> setTranslationEnabled(bool value) async {
+    await updateSettings(_settings.copyWith(translationEnabled: value));
+  }
+
+  Future<void> setTranslationTargetLanguageCode(String? value) async {
+    await updateSettings(
+      _settings.copyWith(translationTargetLanguageCode: value),
+    );
+  }
+
+  Future<void> setComposerTranslationEnabled(bool value) async {
+    await updateSettings(_settings.copyWith(composerTranslationEnabled: value));
+  }
+
+  Future<void> setTranslationModelSourceUrl(String? value) async {
+    await updateSettings(_settings.copyWith(translationModelSourceUrl: value));
+  }
+
+  Future<void> setTranslationSelectedModelId(String? value) async {
+    await updateSettings(_settings.copyWith(translationSelectedModelId: value));
+  }
+
+  Future<void> setTranslationDownloadedModels(
+    List<TranslationModelRecord> value,
+  ) async {
+    await updateSettings(
+      _settings.copyWith(translationDownloadedModels: value),
+    );
+  }
 }
diff --git a/lib/services/message_retry_service.dart b/lib/services/message_retry_service.dart
index 5bc8812..733dfc5 100644
--- a/lib/services/message_retry_service.dart
+++ b/lib/services/message_retry_service.dart
@@ -138,6 +138,9 @@ class MessageRetryService extends ChangeNotifier {
   Future<void> sendMessageWithRetry({
     required Contact contact,
     required String text,
+    String? originalText,
+    String? translatedLanguageCode,
+    String? translationModelId,
     Uint8List? pathBytes,
     int? pathLength,
   }) async {
@@ -150,6 +153,9 @@ class MessageRetryService extends ChangeNotifier {
     final message = Message(
       senderKey: contact.publicKey,
       text: text,
+      originalText: originalText,
+      translatedLanguageCode: translatedLanguageCode,
+      translationModelId: translationModelId,
       timestamp: DateTime.now(),
       isOutgoing: true,
       status: MessageStatus.pending,
diff --git a/lib/services/translation_file_store.dart b/lib/services/translation_file_store.dart
new file mode 100644
index 0000000..451e1c8
--- /dev/null
+++ b/lib/services/translation_file_store.dart
@@ -0,0 +1,2 @@
+export 'translation_file_store_stub.dart'
+    if (dart.library.io) 'translation_file_store_io.dart';
diff --git a/lib/services/translation_file_store_io.dart b/lib/services/translation_file_store_io.dart
new file mode 100644
index 0000000..ad549ef
--- /dev/null
+++ b/lib/services/translation_file_store_io.dart
@@ -0,0 +1,131 @@
+import 'dart:io';
+
+import 'package:path_provider/path_provider.dart';
+
+import '../models/translation_support.dart';
+
+class TranslationFileStore {
+  Future<String> modelDirectoryPath() async {
+    final baseDir = await getApplicationDocumentsDirectory();
+    final dir = Directory('${baseDir.path}/translation_models');
+    if (!dir.existsSync()) {
+      await dir.create(recursive: true);
+    }
+    return dir.path;
+  }
+
+  Future<List<TranslationModelRecord>> scanDownloadedModels() async {
+    final dir = Directory(await modelDirectoryPath());
+    if (!dir.existsSync()) {
+      return const [];
+    }
+    final models = <TranslationModelRecord>[];
+    for (final entity in dir.listSync().whereType<File>()) {
+      final name = entity.uri.pathSegments.last;
+      // Skip hidden chunk files from interrupted parallel downloads.
+      if (name.startsWith('.')) {
+        await entity.delete();
+        continue;
+      }
+      final stat = entity.statSync();
+      models.add(
+        TranslationModelRecord(
+          id: name,
+          name: name,
+          sourceUrl: '',
+          localPath: entity.path,
+          downloadedAt: stat.modified,
+          fileSizeBytes: stat.size,
+        ),
+      );
+    }
+    return models;
+  }
+
+  Future<void> deleteModel(TranslationModelRecord model) async {
+    await deleteFile(model.localPath);
+  }
+
+  Future<void> deleteFile(String path) async {
+    final file = File(path);
+    if (file.existsSync()) {
+      await file.delete();
+    }
+  }
+
+  Future<DownloadedModelFile> writeModelBytes({
+    required String fileName,
+    required Stream<List<int>> chunks,
+  }) async {
+    final directoryPath = await modelDirectoryPath();
+    final file = File('$directoryPath/$fileName');
+    final sink = file.openWrite();
+    var fileSizeBytes = 0;
+    var completed = false;
+    try {
+      await for (final chunk in chunks) {
+        sink.add(chunk);
+        fileSizeBytes += chunk.length;
+      }
+      completed = true;
+    } finally {
+      await sink.close();
+      if (!completed && file.existsSync()) {
+        await file.delete();
+      }
+    }
+    return DownloadedModelFile(
+      localPath: file.path,
+      fileSizeBytes: fileSizeBytes,
+    );
+  }
+
+  Future<String> chunkFilePath(String fileName, int index) async {
+    final dir = await modelDirectoryPath();
+    return '$dir/.${fileName}_chunk_$index';
+  }
+
+  Future<DownloadedModelFile> combineChunks({
+    required String fileName,
+    required List<String> chunkPaths,
+  }) async {
+    final dir = await modelDirectoryPath();
+    final finalPath = '$dir/$fileName';
+    final sink = File(finalPath).openWrite();
+    var totalSize = 0;
+    var completed = false;
+    try {
+      for (final chunkPath in chunkPaths) {
+        final chunkFile = File(chunkPath);
+        await sink.addStream(chunkFile.openRead());
+        totalSize += await chunkFile.length();
+      }
+      completed = true;
+    } finally {
+      await sink.close();
+      for (final chunkPath in chunkPaths) {
+        final file = File(chunkPath);
+        if (file.existsSync()) {
+          await file.delete();
+        }
+      }
+      if (!completed) {
+        final finalFile = File(finalPath);
+        if (finalFile.existsSync()) {
+          await finalFile.delete();
+        }
+      }
+    }
+    return DownloadedModelFile(localPath: finalPath, fileSizeBytes: totalSize);
+  }
+}
+
+class DownloadedModelFile {
+  final String localPath;
+  final int fileSizeBytes;
+
+  const DownloadedModelFile({
+    required this.localPath,
+    required this.fileSizeBytes,
+  });
+}
diff --git a/lib/services/translation_file_store_stub.dart b/lib/services/translation_file_store_stub.dart
new file mode 100644
index 0000000..4a38c37
--- /dev/null
+++ b/lib/services/translation_file_store_stub.dart
@@ -0,0 +1,43 @@
+import '../models/translation_support.dart';
+
+class TranslationFileStore {
+  Future<String> modelDirectoryPath() async {
+    throw UnsupportedError('Local model storage is not supported on web.');
+  }
+
+  Future<List<TranslationModelRecord>> scanDownloadedModels() async {
+    return const [];
+  }
+
+  Future<void> deleteModel(TranslationModelRecord model) async {}
+
+  Future<void> deleteFile(String path) async {}
+
+  Future<DownloadedModelFile> writeModelBytes({
+    required String fileName,
+    required Stream<List<int>> chunks,
+  }) async {
+    throw UnsupportedError('Local model downloads are not supported on web.');
+  }
+
+  Future<String> chunkFilePath(String fileName, int index) async {
+    throw UnsupportedError('Local model downloads are not supported on web.');
+  }
+
+  Future<DownloadedModelFile> combineChunks({
+    required String fileName,
+    required List<String> chunkPaths,
+  }) async {
+    throw UnsupportedError('Local model downloads are not supported on web.');
+  }
+}
+
+class DownloadedModelFile {
+  final String localPath;
+  final int fileSizeBytes;
+
+  const DownloadedModelFile({
+    required this.localPath,
+    required this.fileSizeBytes,
+  });
+}
diff --git a/lib/services/translation_service.dart b/lib/services/translation_service.dart
new file mode 100644
index 0000000..3dd65d5
--- /dev/null
+++ b/lib/services/translation_service.dart
@@ -0,0 +1,653 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:http/http.dart' as http;
+import 'package:llamadart/llamadart.dart';
+
+import '../models/app_settings.dart';
+import '../models/translation_support.dart';
+import '../utils/app_logger.dart';
+import 'app_settings_service.dart';
+import 'translation_file_store.dart';
+
+class TranslationResult {
+  final String translatedText;
+  final String targetLanguageCode;
+  final String? detectedLanguageCode;
+  final String? modelId;
+  final MessageTranslationStatus status;
+
+  const TranslationResult({
+    required this.translatedText,
+    required this.targetLanguageCode,
+    required this.status,
+    this.detectedLanguageCode,
+    this.modelId,
+  });
+}
+
+class TranslationDownloadCancelled implements Exception {
+  const TranslationDownloadCancelled();
+
+  @override
+  String toString() => 'Download canceled.';
+}
+
+class TranslationService extends ChangeNotifier {
+  final AppSettingsService _appSettingsService;
+  final TranslationFileStore _fileStore;
+
+  TranslationService(
+    this._appSettingsService, {
+    TranslationFileStore? fileStore,
+  }) : _fileStore = fileStore ?? TranslationFileStore();
+
+  bool _isBusy = false;
+  bool _isDownloading = false;
+  bool _cancelDownloadRequested = false;
+  String? _lastError;
+  Future<void> _queue = Future<void>.value();
+  LlamaEngine? _engine;
+  String? _loadedModelPath;
+  String? _failedModelPath;
+  int _downloadedBytes = 0;
+  int? _downloadTotalBytes;
+  String? _downloadFileName;
+
+  bool get isBusy => _isBusy;
+  bool get isDownloading => _isDownloading;
+  String? get lastError => _lastError;
+  int get downloadedBytes => _downloadedBytes;
+  int? get downloadTotalBytes => _downloadTotalBytes;
+  String? get downloadFileName => _downloadFileName;
+  double? get downloadProgress {
+    final total = _downloadTotalBytes;
+    if (!_isDownloading || total == null || total <= 0) {
+      return null;
+    }
+    return (_downloadedBytes / total).clamp(0.0, 1.0);
+  }
+
+  AppSettings get _settings => _appSettingsService.settings;
+
+  String? resolvedTargetLanguageCode(String? fallbackLanguageCode) {
+    return _settings.translationTargetLanguageCode ??
+        _settings.languageOverride ??
+        fallbackLanguageCode;
+  }
+
+  String? resolvedIncomingLanguageCode(String? fallbackLanguageCode) {
+    return _settings.languageOverride ?? fallbackLanguageCode ?? 'en';
+  }
+
+  bool shouldTranslateIncoming({
+    required String text,
+    required bool isCli,
+    required bool isOutgoing,
+  }) {
+    if (!_settings.translationEnabled || isCli || isOutgoing) {
+      return false;
+    }
+    return _isPlainTextEligible(text);
+  }
+
+  bool shouldTranslateOutgoing({
+    required String text,
+    required String? targetLanguageCode,
+  }) {
+    return _settings.composerTranslationEnabled &&
+        targetLanguageCode != null &&
+        targetLanguageCode.isNotEmpty &&
+        _isPlainTextEligible(text);
+  }
+
+  List<TranslationModelRecord> get availableModels =>
+      _settings.translationDownloadedModels;
+
+  TranslationModelRecord? get selectedModel {
+    final selectedId = _settings.translationSelectedModelId;
+    if (selectedId == null) {
+      return availableModels.isNotEmpty ? availableModels.first : null;
+    }
+    for (final model in availableModels) {
+      if (model.id == selectedId) {
+        return model;
+      }
+    }
+    return availableModels.isNotEmpty ? availableModels.first : null;
+  }
+
+  Future<void> refreshDownloadedModels() async {
+    if (_isDownloading) return;
+    final scanned = await _fileStore.scanDownloadedModels();
+    if (scanned.isEmpty) {
+      return;
+    }
+    final existingByPath = {
+      for (final model in _settings.translationDownloadedModels)
+        model.localPath: model,
+    };
+    final merged = scanned.map((model) {
+      final existing = existingByPath[model.localPath];
+      if (existing == null) {
+        return model;
+      }
+      return TranslationModelRecord(
+        id: existing.id,
+        name: existing.name,
+        sourceUrl: existing.sourceUrl,
+        localPath: existing.localPath,
+        downloadedAt: existing.downloadedAt,
+        fileSizeBytes: model.fileSizeBytes,
+      );
+    }).toList();
+    await _appSettingsService.setTranslationDownloadedModels(merged);
+    _failedModelPath = null;
+    if (_settings.translationSelectedModelId == null && merged.isNotEmpty) {
+      await _appSettingsService.setTranslationSelectedModelId(merged.first.id);
+    }
+  }
+
+  static const int _parallelChunks = 8;
+  static const int _parallelMinBytes = 10 * 1024 * 1024; // 10 MB
+
+  Future<TranslationModelRecord> downloadModel({
+    required String sourceUrl,
+    String? fileName,
+    String? id,
+  }) async {
+    final uri = Uri.tryParse(sourceUrl);
+    if (uri == null || !uri.hasScheme) {
+      throw ArgumentError('Invalid model URL.');
+    }
+    return _runExclusive(() async {
+      _setBusy(true);
+      _setDownloading(true);
+      _lastError = null;
+      try {
+        final resolvedFileName =
+            fileName ??
+            _sanitizeFileName(
+              uri.pathSegments.isNotEmpty
+                  ? uri.pathSegments.last
+                  : 'translation-model.gguf',
+            );
+        _downloadFileName = resolvedFileName;
+        _downloadedBytes = 0;
+        _cancelDownloadRequested = false;
+
+        // HEAD request to check size and range support.
+        final headClient = http.Client();
+        int? totalSize;
+        bool supportsRange = false;
+        try {
+          final headResponse = await headClient.send(http.Request('HEAD', uri));
+          totalSize = headResponse.contentLength;
+          supportsRange =
+              headResponse.headers['accept-ranges']?.contains('bytes') == true;
+          await headResponse.stream.drain<void>();
+        } finally {
+          headClient.close();
+        }
+
+        _downloadTotalBytes = totalSize;
+        notifyListeners();
+
+        DownloadedModelFile downloaded;
+        if (supportsRange &&
+            totalSize != null &&
+            totalSize > _parallelMinBytes) {
+          downloaded = await _downloadParallel(
+            uri: uri,
+            fileName: resolvedFileName,
+            totalSize: totalSize,
+          );
+        } else {
+          downloaded = await _downloadSingle(
+            uri: uri,
+            fileName: resolvedFileName,
+          );
+        }
+
+        final record = TranslationModelRecord(
+          id: id ?? resolvedFileName,
+          name: resolvedFileName,
+          sourceUrl: sourceUrl,
+          localPath: downloaded.localPath,
+          downloadedAt: DateTime.now(),
+          fileSizeBytes: downloaded.fileSizeBytes,
+        );
+        final updated = [
+          for (final existing in _settings.translationDownloadedModels)
+            if (existing.id != record.id) existing,
+          record,
+        ];
+        await _appSettingsService.setTranslationDownloadedModels(updated);
+        await _appSettingsService.setTranslationSelectedModelId(record.id);
+        await _appSettingsService.setTranslationModelSourceUrl(sourceUrl);
+        _failedModelPath = null;
+        return record;
+      } finally {
+        _setDownloading(false);
+      }
+    });
+  }
+
+  Future<DownloadedModelFile> _downloadSingle({
+    required Uri uri,
+    required String fileName,
+  }) async {
+    final client = http.Client();
+    try {
+      final response = await client.send(http.Request('GET', uri));
+      if (response.statusCode < 200 || response.statusCode >= 300) {
+        throw StateError('Model download failed: HTTP ${response.statusCode}');
+      }
+      _downloadTotalBytes ??= response.contentLength;
+      notifyListeners();
+      final trackedStream = _trackDownloadProgress(response.stream);
+      return await _fileStore.writeModelBytes(
+        fileName: fileName,
+        chunks: trackedStream,
+      );
+    } finally {
+      client.close();
+    }
+  }
+
+  Future<DownloadedModelFile> _downloadParallel({
+    required Uri uri,
+    required String fileName,
+    required int totalSize,
+  }) async {
+    final chunkSize = (totalSize / _parallelChunks).ceil();
+    final chunkPaths = <String>[];
+    final clients = <http.Client>[];
+    var combineReached = false;
+    try {
+      final futures = <Future<void>>[];
+      for (var i = 0; i < _parallelChunks; i++) {
+        final start = i * chunkSize;
+        final end = (start + chunkSize - 1).clamp(0, totalSize - 1);
+        if (start >= totalSize) break;
+        final chunkPath = await _fileStore.chunkFilePath(fileName, i);
+        chunkPaths.add(chunkPath);
+        final client = http.Client();
+        clients.add(client);
+        futures.add(
+          _downloadRange(
+            client: client,
+            uri: uri,
+            chunkPath: chunkPath,
+            start: start,
+            end: end,
+          ),
+        );
+      }
+      await Future.wait(futures);
+      if (_cancelDownloadRequested) {
+        throw const TranslationDownloadCancelled();
+      }
+      _downloadFileName = 'Merging chunks...';
+      notifyListeners();
+      combineReached = true;
+      return await _fileStore.combineChunks(
+        fileName: fileName,
+        chunkPaths: chunkPaths,
+      );
+    } finally {
+      for (final client in clients) {
+        client.close();
+      }
+      if (!combineReached) {
+        for (final chunkPath in chunkPaths) {
+          await _fileStore.deleteFile(chunkPath);
+        }
+      }
+    }
+  }
+
+  Future<void> _downloadRange({
+    required http.Client client,
+    required Uri uri,
+    required String chunkPath,
+    required int start,
+    required int end,
+  }) async {
+    final request = http.Request('GET', uri);
+    request.headers['Range'] = 'bytes=$start-$end';
+    final response = await client.send(request);
+    if (response.statusCode != 206 && response.statusCode != 200) {
+      throw StateError('Range download failed: HTTP ${response.statusCode}');
+    }
+    final trackedStream = _trackDownloadProgress(response.stream);
+    await _fileStore.writeModelBytes(
+      fileName: chunkPath.split('/').last,
+      chunks: trackedStream,
+    );
+  }
+
+  void cancelDownload() {
+    if (!_isDownloading) {
+      return;
+    }
+    _cancelDownloadRequested = true;
+    _lastError = 'Download stopped.';
+    notifyListeners();
+  }
+
+  Future<void> removeModel(TranslationModelRecord model) async {
+    await _runExclusive(() async {
+      _setBusy(true);
+      _lastError = null;
+      await _fileStore.deleteModel(model);
+      final updated = _settings.translationDownloadedModels
+          .where((entry) => entry.id != model.id)
+          .toList();
+      await _appSettingsService.setTranslationDownloadedModels(updated);
+      if (_settings.translationSelectedModelId == model.id) {
+        await _appSettingsService.setTranslationSelectedModelId(
+          updated.isNotEmpty ? updated.first.id : null,
+        );
+      }
+    });
+  }
+
+  Future<TranslationResult?> translateIncomingText({
+    required String text,
+    required String? targetLanguageCode,
+  }) async {
+    if (targetLanguageCode == null || !_isPlainTextEligible(text)) {
+      return null;
+    }
+    final detectedLanguageCode = await detectLanguage(text);
+    if (detectedLanguageCode != null &&
+        detectedLanguageCode == targetLanguageCode) {
+      return const TranslationResult(
+        translatedText: '',
+        targetLanguageCode: '',
+        status: MessageTranslationStatus.skipped,
+      );
+    }
+    final translatedText = await _translateText(
+      text: text,
+      targetLanguageCode: targetLanguageCode,
+      sourceLanguageCode: detectedLanguageCode,
+    );
+    if (translatedText == null || translatedText.trim().isEmpty) {
+      return null;
+    }
+    // If translation is nearly identical, text was already in target language.
+    if (translatedText.trim().toLowerCase() == text.trim().toLowerCase()) {
+      return const TranslationResult(
+        translatedText: '',
+        targetLanguageCode: '',
+        status: MessageTranslationStatus.skipped,
+      );
+    }
+    return TranslationResult(
+      translatedText: translatedText.trim(),
+      targetLanguageCode: targetLanguageCode,
+      detectedLanguageCode: detectedLanguageCode,
+      modelId: selectedModel?.id,
+      status: MessageTranslationStatus.completed,
+    );
+  }
+
+  Future<TranslationResult?> translateOutgoingText({
+    required String text,
+    required String? targetLanguageCode,
+  }) async {
+    if (targetLanguageCode == null || !_isPlainTextEligible(text)) {
+      return null;
+    }
+    final detectedLanguageCode = await detectLanguage(text);
+    if (detectedLanguageCode != null &&
+        detectedLanguageCode == targetLanguageCode) {
+      return const TranslationResult(
+        translatedText: '',
+        targetLanguageCode: '',
+        status: MessageTranslationStatus.skipped,
+      );
+    }
+    final translatedText = await _translateText(
+      text: text,
+      targetLanguageCode: targetLanguageCode,
+      sourceLanguageCode: detectedLanguageCode,
+    );
+    if (translatedText == null || translatedText.trim().isEmpty) {
+      return null;
+    }
+    return TranslationResult(
+      translatedText: translatedText.trim(),
+      targetLanguageCode: targetLanguageCode,
+      detectedLanguageCode: detectedLanguageCode,
+      modelId: selectedModel?.id,
+      status: MessageTranslationStatus.completed,
+    );
+  }
+
+  Future<String?> detectLanguage(String text) async {
+    return _heuristicLanguageCode(text);
+  }
+
+  Future<String?> _translateText({
+    required String text,
+    required String targetLanguageCode,
+    String? sourceLanguageCode,
+  }) async {
+    if (!_hasUsableModel) {
+      return null;
+    }
+    final model = selectedModel;
+    if (model == null || model.localPath.isEmpty) {
+      return null;
+    }
+    final targetLabel = _languageLabel(targetLanguageCode);
+    final instruction = targetLanguageCode == 'zh'
+        ? '将以下文本翻译为中文，注意只需要输出翻译后的结果，不要额外解释：\n\n$text'
+        : 'Translate the following segment into $targetLabel, without additional explanation.\n\n$text';
+    try {
+      return await _runExclusive(() async {
+        final engine = await _ensureContext(model.localPath);
+        if (engine == null) {
+          return null;
+        }
+        final messages = [
+          LlamaChatMessage.fromText(
+            role: LlamaChatRole.user,
+            text: instruction,
+          ),
+        ];
+        final output = StringBuffer();
+        await for (final chunk in engine.create(
+          messages,
+          params: const GenerationParams(
+            maxTokens: 256,
+            temp: 0.7,
+            topK: 20,
+            topP: 0.6,
+            penalty: 1.05,
+            reusePromptPrefix: false,
+          ),
+          enableThinking: false,
+          sourceLangCode: sourceLanguageCode,
+          targetLangCode: targetLanguageCode,
+        )) {
+          final content = chunk.choices.firstOrNull?.delta.content;
+          if (content != null) {
+            output.write(content);
+          }
+          if (output.length >= text.length * 4 + 100) {
+            break;
+          }
+        }
+        return _sanitizeOutput(output.toString());
+      });
+    } catch (error) {
+      _lastError = error.toString();
+      appLogger.warn('Translation request failed: $error');
+      notifyListeners();
+      return null;
+    }
+  }
+
+  bool get _hasUsableModel {
+    final model = selectedModel;
+    return !kIsWeb && model != null && model.localPath.isNotEmpty;
+  }
+
+  bool _isPlainTextEligible(String text) {
+    final trimmed = text.trim();
+    if (trimmed.isEmpty) {
+      return false;
+    }
+    return !(trimmed.startsWith('g:') ||
+        trimmed.startsWith('m:') ||
+        trimmed.startsWith('V1|') ||
+        trimmed.startsWith('r:'));
+  }
+
+  String? _heuristicLanguageCode(String text) {
+    if (RegExp(r'[іїєґІЇЄҐ]').hasMatch(text)) {
+      return 'uk';
+    }
+    if (RegExp(r'[а-яёА-ЯЁ]').hasMatch(text)) {
+      return 'ru';
+    }
+    if (RegExp(r'[ぁ-んァ-ン]').hasMatch(text)) {
+      return 'ja';
+    }
+    if (RegExp(r'[가-힣]').hasMatch(text)) {
+      return 'ko';
+    }
+    if (RegExp(r'[\u4e00-\u9fff]').hasMatch(text)) {
+      return 'zh';
+    }
+    // Latin-script languages can't be reliably distinguished by characters
+    // alone — return null so the translator always attempts translation.
+    return null;
+  }
+
+  String _languageLabel(String code) {
+    for (final option in supportedTranslationLanguages) {
+      if (option.code == code) {
+        return option.label;
+      }
+    }
+    return code.toUpperCase();
+  }
+
+  String _sanitizeOutput(String raw) {
+    var result = raw.trim();
+    result = result.replaceAll(RegExp(r'\*\*'), '');
+    result = result.replaceAll(RegExp(r'<[^>]+>'), '');
+    return result.trim();
+  }
+
+  String _sanitizeFileName(String fileName) {
+    final cleaned = fileName.replaceAll(RegExp(r'[^A-Za-z0-9._-]'), '_');
+    return cleaned.isEmpty ? 'translation-model.gguf' : cleaned;
+  }
+
+  Future<LlamaEngine?> _ensureContext(String modelPath) async {
+    if (_engine != null && _loadedModelPath == modelPath) {
+      return _engine;
+    }
+    if (modelPath == _failedModelPath) {
+      return null;
+    }
+    if (_engine != null) {
+      await _engine!.dispose();
+      _engine = null;
+      _loadedModelPath = null;
+    }
+    final engine = LlamaEngine(LlamaBackend());
+    try {
+      await engine.loadModel(
+        modelPath,
+        modelParams: const ModelParams(
+          gpuLayers: 0,
+          preferredBackend: GpuBackend.cpu,
+        ),
+      );
+      _engine = engine;
+      _loadedModelPath = modelPath;
+      _failedModelPath = null;
+      return _engine;
+    } catch (_) {
+      await engine.dispose();
+      _failedModelPath = modelPath;
+      rethrow;
+    }
+  }
+
+  Future<void> releaseModel() async {
+    await _runExclusive(() async {
+      final engine = _engine;
+      if (engine == null) {
+        _loadedModelPath = null;
+        return;
+      }
+      _engine = null;
+      _loadedModelPath = null;
+      await engine.dispose();
+    });
+  }
+
+  Future<T> _runExclusive<T>(Future<T> Function() action) {
+    final completer = Completer<T>();
+    _setBusy(true);
+    _queue = _queue.then((_) async {
+      try {
+        completer.complete(await action());
+      } catch (error, stackTrace) {
+        completer.completeError(error, stackTrace);
+      } finally {
+        _setBusy(false);
+      }
+    });
+    return completer.future;
+  }
+
+  Stream<List<int>> _trackDownloadProgress(Stream<List<int>> source) async* {
+    await for (final chunk in source) {
+      if (_cancelDownloadRequested) {
+        throw const TranslationDownloadCancelled();
+      }
+      _downloadedBytes += chunk.length;
+      notifyListeners();
+      yield chunk;
+    }
+  }
+
+  void _setBusy(bool value) {
+    if (_isBusy == value) {
+      return;
+    }
+    _isBusy = value;
+    notifyListeners();
+  }
+
+  void _setDownloading(bool value) {
+    _isDownloading = value;
+    if (!value) {
+      _cancelDownloadRequested = false;
+      _downloadedBytes = 0;
+      _downloadTotalBytes = null;
+      _downloadFileName = null;
+    }
+    notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    final engine = _engine;
+    _engine = null;
+    _loadedModelPath = null;
+    if (engine != null) {
+      unawaited(engine.dispose());
+    }
+    super.dispose();
+  }
+}
diff --git a/lib/storage/channel_message_store.dart b/lib/storage/channel_message_store.dart
index ddb42f6..5a0fbd8 100644
--- a/lib/storage/channel_message_store.dart
+++ b/lib/storage/channel_message_store.dart
@@ -3,6 +3,7 @@ import 'dart:typed_data';
 import 'package:meshcore_open/utils/app_logger.dart';
 
 import '../models/channel_message.dart';
+import '../models/translation_support.dart';
 import '../helpers/smaz.dart';
 import 'prefs_manager.dart';
 
@@ -98,6 +99,11 @@ class ChannelMessageStore {
       'senderKey': msg.senderKey != null ? base64Encode(msg.senderKey!) : null,
       'senderName': msg.senderName,
       'text': msg.text,
+      'originalText': msg.originalText,
+      'translatedText': msg.translatedText,
+      'translatedLanguageCode': msg.translatedLanguageCode,
+      'translationStatus': msg.translationStatus.value,
+      'translationModelId': msg.translationModelId,
       'timestamp': msg.timestamp.millisecondsSinceEpoch,
       'isOutgoing': msg.isOutgoing,
       'status': msg.status.index,
@@ -126,6 +132,13 @@ class ChannelMessageStore {
           : null,
       senderName: json['senderName'] as String,
       text: decodedText,
+      originalText: json['originalText'] as String?,
+      translatedText: json['translatedText'] as String?,
+      translatedLanguageCode: json['translatedLanguageCode'] as String?,
+      translationStatus: parseMessageTranslationStatus(
+        json['translationStatus'],
+      ),
+      translationModelId: json['translationModelId'] as String?,
       timestamp: DateTime.fromMillisecondsSinceEpoch(json['timestamp'] as int),
       isOutgoing: json['isOutgoing'] as bool,
       status: ChannelMessageStatus.values[json['status'] as int],
diff --git a/lib/storage/message_store.dart b/lib/storage/message_store.dart
index 5550911..3d23768 100644
--- a/lib/storage/message_store.dart
+++ b/lib/storage/message_store.dart
@@ -1,6 +1,7 @@
 import 'dart:convert';
 import 'dart:typed_data';
 import '../models/message.dart';
+import '../models/translation_support.dart';
 import '../helpers/smaz.dart';
 import '../utils/app_logger.dart';
 import 'prefs_manager.dart';
@@ -83,6 +84,11 @@ class MessageStore {
       'isCli': msg.isCli,
       'status': msg.status.index,
       'messageId': msg.messageId,
+      'originalText': msg.originalText,
+      'translatedText': msg.translatedText,
+      'translatedLanguageCode': msg.translatedLanguageCode,
+      'translationStatus': msg.translationStatus.value,
+      'translationModelId': msg.translationModelId,
       'retryCount': msg.retryCount,
       'estimatedTimeoutMs': msg.estimatedTimeoutMs,
       'expectedAckHash': msg.expectedAckHash,
@@ -115,6 +121,13 @@ class MessageStore {
       isCli: isCli,
       status: MessageStatus.values[json['status'] as int],
       messageId: json['messageId'] as String?,
+      originalText: json['originalText'] as String?,
+      translatedText: json['translatedText'] as String?,
+      translatedLanguageCode: json['translatedLanguageCode'] as String?,
+      translationStatus: parseMessageTranslationStatus(
+        json['translationStatus'],
+      ),
+      translationModelId: json['translationModelId'] as String?,
       retryCount: json['retryCount'] as int? ?? 0,
       estimatedTimeoutMs: json['estimatedTimeoutMs'] as int?,
       expectedAckHash: json['expectedAckHash'] as int? ?? 0,
diff --git a/lib/widgets/message_translation_button.dart b/lib/widgets/message_translation_button.dart
new file mode 100644
index 0000000..18946dd
--- /dev/null
+++ b/lib/widgets/message_translation_button.dart
@@ -0,0 +1,187 @@
+import 'package:flutter/material.dart';
+
+import '../l10n/l10n.dart';
+import '../models/translation_support.dart';
+
+class MessageTranslationButton extends StatelessWidget {
+  final bool enabled;
+  final String? languageCode;
+  final VoidCallback onPressed;
+
+  const MessageTranslationButton({
+    super.key,
+    required this.enabled,
+    required this.languageCode,
+    required this.onPressed,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final label = _languageLabel(
+      languageCode,
+      context.l10n.translation_systemLanguage,
+    );
+    return IconButton(
+      icon: Icon(enabled ? Icons.translate : Icons.translate_outlined),
+      onPressed: onPressed,
+      tooltip: enabled
+          ? context.l10n.translation_translateTo(label)
+          : context.l10n.translation_translationOptions,
+    );
+  }
+}
+
+Future<void> showMessageTranslationSheet({
+  required BuildContext context,
+  required bool enabled,
+  required String? selectedLanguageCode,
+  required ValueChanged<bool> onEnabledChanged,
+  required ValueChanged<String> onLanguageSelected,
+}) {
+  return showModalBottomSheet<void>(
+    context: context,
+    isScrollControlled: true,
+    builder: (context) => _MessageTranslationSheet(
+      enabled: enabled,
+      selectedLanguageCode: selectedLanguageCode,
+      onEnabledChanged: onEnabledChanged,
+      onLanguageSelected: onLanguageSelected,
+    ),
+  );
+}
+
+class _MessageTranslationSheet extends StatefulWidget {
+  final bool enabled;
+  final String? selectedLanguageCode;
+  final ValueChanged<bool> onEnabledChanged;
+  final ValueChanged<String> onLanguageSelected;
+
+  const _MessageTranslationSheet({
+    required this.enabled,
+    required this.selectedLanguageCode,
+    required this.onEnabledChanged,
+    required this.onLanguageSelected,
+  });
+
+  @override
+  State<_MessageTranslationSheet> createState() =>
+      _MessageTranslationSheetState();
+}
+
+class _MessageTranslationSheetState extends State<_MessageTranslationSheet> {
+  late final TextEditingController _searchController;
+  late bool _localEnabled;
+  late String? _localSelectedLanguageCode;
+  List<TranslationLanguageOption> _filtered = supportedTranslationLanguages;
+
+  @override
+  void initState() {
+    super.initState();
+    _searchController = TextEditingController();
+    _localEnabled = widget.enabled;
+    _localSelectedLanguageCode = widget.selectedLanguageCode;
+  }
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    super.dispose();
+  }
+
+  void _updateFilter(String query) {
+    final normalized = query.trim().toLowerCase();
+    setState(() {
+      _filtered = supportedTranslationLanguages.where((option) {
+        return option.label.toLowerCase().contains(normalized) ||
+            option.code.toLowerCase().contains(normalized);
+      }).toList();
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SafeArea(
+      child: Padding(
+        padding: EdgeInsets.only(
+          left: 16,
+          right: 16,
+          top: 16,
+          bottom: 16 + MediaQuery.of(context).viewInsets.bottom,
+        ),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(
+              context.l10n.translation_messageTranslation,
+              style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
+            ),
+            const SizedBox(height: 8),
+            SwitchListTile(
+              contentPadding: EdgeInsets.zero,
+              title: Text(context.l10n.translation_translateBeforeSending),
+              subtitle: Text(
+                _localEnabled
+                    ? context.l10n.translation_composerEnabledHint
+                    : context.l10n.translation_composerDisabledHint,
+              ),
+              value: _localEnabled,
+              onChanged: (value) {
+                setState(() => _localEnabled = value);
+                widget.onEnabledChanged(value);
+              },
+            ),
+            const SizedBox(height: 8),
+            TextField(
+              controller: _searchController,
+              onChanged: _updateFilter,
+              decoration: InputDecoration(
+                labelText: context.l10n.translation_targetLanguage,
+                prefixIcon: const Icon(Icons.search),
+                border: const OutlineInputBorder(),
+              ),
+            ),
+            const SizedBox(height: 12),
+            Flexible(
+              child: ListView.builder(
+                shrinkWrap: true,
+                itemCount: _filtered.length,
+                itemBuilder: (context, index) {
+                  final option = _filtered[index];
+                  final selected = option.code == _localSelectedLanguageCode;
+                  return ListTile(
+                    contentPadding: EdgeInsets.zero,
+                    leading: Icon(
+                      selected
+                          ? Icons.radio_button_checked
+                          : Icons.radio_button_unchecked,
+                    ),
+                    title: Text(option.label),
+                    subtitle: Text(option.code.toUpperCase()),
+                    onTap: () {
+                      setState(() => _localSelectedLanguageCode = option.code);
+                      widget.onLanguageSelected(option.code);
+                      Navigator.pop(context);
+                    },
+                  );
+                },
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+String _languageLabel(String? languageCode, String systemLanguageFallback) {
+  if (languageCode == null) {
+    return systemLanguageFallback;
+  }
+  for (final option in supportedTranslationLanguages) {
+    if (option.code == languageCode) {
+      return option.label;
+    }
+  }
+  return languageCode.toUpperCase();
+}
diff --git a/lib/widgets/translated_message_content.dart b/lib/widgets/translated_message_content.dart
new file mode 100644
index 0000000..3495897
--- /dev/null
+++ b/lib/widgets/translated_message_content.dart
@@ -0,0 +1,61 @@
+import 'package:flutter/material.dart';
+
+import '../helpers/link_handler.dart';
+
+class TranslatedMessageContent extends StatelessWidget {
+  final String displayText;
+  final String? originalText;
+  final TextStyle style;
+  final TextStyle? originalStyle;
+  final bool showOriginalFirst;
+
+  const TranslatedMessageContent({
+    super.key,
+    required this.displayText,
+    required this.style,
+    this.originalText,
+    this.originalStyle,
+    this.showOriginalFirst = true,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final trimmedDisplay = displayText.trim();
+    final trimmedOriginal = originalText?.trim();
+    final shouldShowOriginal =
+        trimmedOriginal != null &&
+        trimmedOriginal.isNotEmpty &&
+        trimmedOriginal != trimmedDisplay;
+    final originalWidget = shouldShowOriginal
+        ? LinkHandler.buildLinkifyText(
+            context: context,
+            text: trimmedOriginal,
+            style:
+                originalStyle ??
+                style.copyWith(
+                  fontStyle: FontStyle.italic,
+                  fontSize: style.fontSize,
+                ),
+          )
+        : null;
+    final translatedWidget = LinkHandler.buildLinkifyText(
+      context: context,
+      text: trimmedDisplay,
+      style: style,
+    );
+
+    if (!shouldShowOriginal) {
+      return translatedWidget;
+    }
+
+    final children = showOriginalFirst
+        ? [originalWidget!, const SizedBox(height: 6), translatedWidget]
+        : [translatedWidget, const SizedBox(height: 6), originalWidget!];
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisSize: MainAxisSize.min,
+      children: children,
+    );
+  }
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index 39e9f96..af07196 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -71,6 +71,17 @@ dependencies:
   flutter_blue_plus_platform_interface: ^8.2.1
   ml_algo: ^16.0.0
   ml_dataframe: ^1.0.0
+  llamadart: '>=0.6.8 <0.7.0'
+
+hooks:
+  user_defines:
+    llamadart:
+      llamadart_native_backends:
+        platforms:
+          android-arm64:
+            backends: [cpu]
+          android-x64:
+            backends: [cpu]
 
 dev_dependencies:
   flutter_test: