locales: add connection method, serial, WiFi, and IP address fields in German, English, Italian, and Russian translations; include error message for failed OTA flashing

meshchatx/src/frontend/locales/de.json

@@ -811,6 +811,11 @@
             "select_device": "1. Wählen Sie Ihr Gerät aus",
             "product": "Produkt",
             "model": "Modell",
+            "connection_method": "Verbindungsmethode",
+            "serial": "Seriell",
+            "wifi": "WiFi",
+            "ip_address": "IP-Adresse",
+            "ip_address_placeholder": "z.B. 192.168.1.100",
             "select_product": "Produkt auswählen",
             "select_model": "Modell auswählen",
             "enter_dfu_mode": "DFU-Modus aufrufen",
@@ -888,6 +893,7 @@
                 "failed_dfu": "Fehler beim Aufrufen des DFU-Modus: {error}",
                 "select_firmware_first": "Bitte wählen Sie zuerst eine Firmware-Datei (.zip) aus.",
                 "failed_flash": "Firmware-Flash fehlgeschlagen: {error}",
+                "failed_ota": "OTA-Flash fehlgeschlagen: {error}",
                 "esptool_not_loaded": "esptool-js konnte nicht geladen werden. Bitte laden Sie die Seite neu und versuchen Sie es erneut.",
                 "no_flash_config": "Flash-Konfiguration für das ausgewählte Gerät nicht verfügbar. Bitte wählen Sie ein anderes Gerät aus oder überprüfen Sie die Firmware-Datei.",
                 "failed_extract": "Erforderliche Datei \"{file}\" in der Firmware-ZIP-Datei nicht gefunden. Bitte laden Sie die richtige Firmware für Ihr Gerät herunter.",

meshchatx/src/frontend/locales/en.json

@@ -900,6 +900,11 @@
             "select_device": "1. Select your device",
             "product": "Product",
             "model": "Model",
+            "connection_method": "Connection Method",
+            "serial": "Serial",
+            "wifi": "WiFi",
+            "ip_address": "IP Address",
+            "ip_address_placeholder": "e.g. 192.168.1.100",
             "select_product": "Select a Product",
             "select_model": "Select a Model",
             "enter_dfu_mode": "Enter DFU Mode",
@@ -977,6 +982,7 @@
                 "failed_dfu": "Failed to enter DFU mode: {error}",
                 "select_firmware_first": "Please select a firmware file (.zip) first.",
                 "failed_flash": "Firmware flashing failed: {error}",
+                "failed_ota": "OTA flashing failed: {error}",
                 "esptool_not_loaded": "esptool-js could not be loaded. Please refresh the page and try again.",
                 "no_flash_config": "Flash configuration is not available for the selected device. Please select a different device or check the firmware file.",
                 "failed_extract": "Required file \"{file}\" not found in firmware ZIP file. Please download the correct firmware for your device.",

meshchatx/src/frontend/locales/it.json

@@ -900,6 +900,11 @@
             "select_device": "1. Seleziona il tuo dispositivo",
             "product": "Prodotto",
             "model": "Modello",
+            "connection_method": "Metodo di Connessione",
+            "serial": "Seriale",
+            "wifi": "WiFi",
+            "ip_address": "Indirizzo IP",
+            "ip_address_placeholder": "es. 192.168.1.100",
             "select_product": "Seleziona un Prodotto",
             "select_model": "Seleziona un Modello",
             "enter_dfu_mode": "Entra in Modalità DFU",
@@ -977,6 +982,7 @@
                 "failed_dfu": "Impossibile entrare in modalità DFU: {error}",
                 "select_firmware_first": "Seleziona prima un file firmware (.zip).",
                 "failed_flash": "Flashing del firmware fallito: {error}",
+                "failed_ota": "Flash OTA fallito: {error}",
                 "esptool_not_loaded": "impossibile caricare esptool-js. Ricarica la pagina e riprova.",
                 "no_flash_config": "La configurazione di flash non è disponibile per il dispositivo selezionato. Seleziona un altro dispositivo o controlla il file del firmware.",
                 "failed_extract": "File richiesto \"{file}\" non trovato nel file ZIP del firmware. Scarica il firmware corretto per il tuo dispositivo.",

meshchatx/src/frontend/locales/ru.json

@@ -811,6 +811,11 @@
             "select_device": "1. Выберите устройство",
             "product": "Продукт",
             "model": "Модель",
+            "connection_method": "Способ подключения",
+            "serial": "Последовательный порт",
+            "wifi": "WiFi",
+            "ip_address": "IP-адрес",
+            "ip_address_placeholder": "напр. 192.168.1.100",
             "select_product": "Выберите продукт",
             "select_model": "Выберите модель",
             "enter_dfu_mode": "Войти в режим DFU",
@@ -888,6 +893,7 @@
                 "failed_dfu": "Не удалось войти в режим DFU: {error}",
                 "select_firmware_first": "Пожалуйста, сначала выберите файл прошивки (.zip).",
                 "failed_flash": "Сбой прошивки: {error}",
+                "failed_ota": "Сбой OTA-прошивки: {error}",
                 "esptool_not_loaded": "esptool-js не удалось загрузить. Пожалуйста, обновите страницу и попробуйте снова.",
                 "no_flash_config": "Конфигурация прошивки недоступна для выбранного устройства. Выберите другое устройство или проверьте файл прошивки.",
                 "failed_extract": "Требуемый файл \"{file}\" не найден в ZIP-архиве прошивки. Скачайте правильную прошивку для вашего устройства.",