refactor: Update translations for "downloading" and "poweredBy"

frontend/src/components/Header.tsx

@@ -226,7 +226,7 @@ const Header: React.FC<HeaderProps> = ({
                                         </Typography>
                                         <Box sx={{ display: 'flex', justifyContent: 'space-between', mt: 0.5 }}>
                                             <Typography variant="caption" color="text.secondary">
-                                                {download.progress ? `${download.progress.toFixed(1)}%` : 'Downloading...'}
+                                                {download.progress ? `${download.progress.toFixed(1)}%` : t('downloading')}
                                             </Typography>
                                             {download.totalSize && (
                                                 <Typography variant="caption" color="text.secondary">
@@ -404,7 +404,7 @@ const Header: React.FC<HeaderProps> = ({
                                 </Typography>
                                 {websiteName !== 'MyTube' && (
                                     <Typography variant="caption" color="text.secondary" sx={{ fontSize: '0.6rem', lineHeight: 1 }}>
-                                        Powered by MyTube
+                                        {t('poweredBy')}
                                     </Typography>
                                 )}
                             </Box>

frontend/src/utils/locales/ar.ts

@@ -9,6 +9,7 @@ export const ar = {
     uploadVideo: "رفع فيديو",
     enterUrlOrSearchTerm: "أدخل رابط الفيديو أو كلمة البحث",
     manageVideos: "إدارة الفيديوهات",
+    instruction: "تعليمات",
     
     // Home
     pasteUrl: "لصق رابط الفيديو أو المجموعة",
@@ -375,4 +376,6 @@ export const ar = {
     instructionSection3Item3Label: "OpenList Cloud Drive:",
     instructionSection3Item3Text: "(قيد التطوير) يدعم الاتصال بخدمات OpenList التي ينشرها المستخدم. أضف التكوين هنا لتمكين تكامل محرك الأقراص السحابية.",
     history: 'سجل',
+    downloading: "جاري التنزيل...",
+    poweredBy: "مدعوم من MyTube",
 };

frontend/src/utils/locales/de.ts

@@ -3,7 +3,9 @@ export const de = {
     pleaseEnterUrlOrSearchTerm: "Bitte geben Sie eine Video-URL oder einen Suchbegriff ein",
     unexpectedErrorOccurred: "Ein unerwarteter Fehler ist aufgetreten. Bitte versuchen Sie es erneut.",
     uploadVideo: "Video Hochladen", enterUrlOrSearchTerm: "Video-URL oder Suchbegriff eingeben",
-    manageVideos: "Videos Verwalten", pasteUrl: "Video- oder Sammlungs-URL einfügen", download: "Herunterladen",
+    manageVideos: "Videos Verwalten",
+    instruction: "Anleitung",
+ pasteUrl: "Video- oder Sammlungs-URL einfügen", download: "Herunterladen",
     search: "Suchen", recentDownloads: "Letzte Downloads", noDownloads: "Noch keine Downloads",
     downloadStarted: "Download gestartet", downloadFailed: "Download fehlgeschlagen", loadingVideos: "Videos werden geladen...",
     searchResultsFor: "Suchergebnisse für", fromYourLibrary: "Aus Ihrer Bibliothek",
@@ -238,4 +240,6 @@ export const de = {
     instructionSection3Item3Label: "OpenList Cloud Drive:",
     instructionSection3Item3Text: "(In Entwicklung) Unterstützt die Verbindung zu benutzerbereitgestellten OpenList-Diensten. Fügen Sie hier eine Konfiguration hinzu, um die Cloud-Laufwerksintegration zu aktivieren.",
     history: 'Verlauf',
+    downloading: "Herunterladen...",
+    poweredBy: "Bereitgestellt von MyTube",
 };

frontend/src/utils/locales/en.ts

@@ -395,4 +395,6 @@ export const en = {
     skipped: "Skipped",
     videoSkippedExists: "Video already exists, skipped download",
     videoSkippedDeleted: "Video was previously deleted, skipped download",
+    downloading: "Downloading...",
+    poweredBy: "Powered by MyTube",
 };

frontend/src/utils/locales/es.ts

@@ -3,7 +3,9 @@ export const es = {
     pleaseEnterUrlOrSearchTerm: "Por favor ingrese una URL de video o término de búsqueda",
     unexpectedErrorOccurred: "Ocurrió un error inesperado. Por favor, inténtelo de nuevo.",
     uploadVideo: "Subir Video", enterUrlOrSearchTerm: "Introduce la URL del video o término de búsqueda",
-    manageVideos: "Gestionar Videos", pasteUrl: "Pegar URL de video o colección", download: "Descargar",
+    manageVideos: "Gestionar Videos",
+    instruction: "Instrucciones",
+ pasteUrl: "Pegar URL de video o colección", download: "Descargar",
     search: "Buscar", recentDownloads: "Descargas Recientes", noDownloads: "Sin descargas aún",
     downloadStarted: "Descarga iniciada", downloadFailed: "Descarga fallida", loadingVideos: "Cargando videos...",
     searchResultsFor: "Resultados de búsqueda para", fromYourLibrary: "De tu Biblioteca",
@@ -242,4 +244,6 @@ export const es = {
     instructionSection3Item3Label: "Nube OpenList:",
     instructionSection3Item3Text: "(En Desarrollo) Admite conectar servicios OpenList implementados por el usuario. Agregue configuración aquí para habilitar la integración de la unidad en la nube.",
     history: 'Historial',
+    downloading: "Descargando...",
+    poweredBy: "Con tecnología de MyTube",
 };

frontend/src/utils/locales/fr.ts

@@ -9,6 +9,7 @@ export const fr = {
     uploadVideo: "Mettre en ligne une vidéo",
     enterUrlOrSearchTerm: "Entrez l'URL de la vidéo ou le terme de recherche",
     manageVideos: "Gérer les vidéos",
+    instruction: "Instructions",
     
     // Home
     pasteUrl: "Coller l'URL de la vidéo ou de la collection",
@@ -376,4 +377,6 @@ export const fr = {
     instructionSection3Item3Label: "OpenList Cloud Drive :",
     instructionSection3Item3Text: "(En Développement) Prend en charge la connexion aux services OpenList déployés par l'utilisateur. Ajoutez la configuration ici pour activer l'intégration du lecteur cloud.",
     history: 'Historique',
+    downloading: "Téléchargement...",
+    poweredBy: "Propulsé par MyTube",
 };

frontend/src/utils/locales/ja.ts

@@ -9,6 +9,7 @@ export const ja = {
     uploadVideo: "動画をアップロード",
     enterUrlOrSearchTerm: "動画のURLまたは検索語を入力",
     manageVideos: "動画の管理",
+    instruction: "説明書",
     
     // Home
     pasteUrl: "動画またはコレクションのURLを貼り付け",
@@ -373,4 +374,6 @@ export const ja = {
     instructionSection3Item3Label: "OpenList クラウドドライブ：",
     instructionSection3Item3Text: "（開発中）ユーザーがデプロイした OpenList サービスへの接続をサポートします。ここで構成を追加して、クラウドドライブ統合を有効にします。",
     history: '履歴',
+    downloading: "ダウンロード中...",
+    poweredBy: "MyTubeによって提供",
 };

frontend/src/utils/locales/ko.ts

@@ -9,6 +9,7 @@ export const ko = {
     uploadVideo: "동영상 업로드",
     enterUrlOrSearchTerm: "동영상 URL 또는 검색어 입력",
     manageVideos: "동영상 관리",
+    instruction: "설명서",
     
     // Home
     pasteUrl: "동영상 또는 컬렉션 URL 붙여넣기",
@@ -376,4 +377,6 @@ export const ko = {
     instructionSection3Item3Label: "OpenList 클라우드 드라이브:",
     instructionSection3Item3Text: "(개발 중) 사용자 배포 OpenList 서비스 연결을 지원합니다. 클라우드 드라이브 통합을 활성화하려면 여기에 구성을 추가하십시오.",
     history: '기록',
+    downloading: "다운로드 중...",
+    poweredBy: "MyTube 제공",
 };

frontend/src/utils/locales/pt.ts

@@ -9,6 +9,7 @@ export const pt = {
     uploadVideo: "Enviar Vídeo",
     enterUrlOrSearchTerm: "Insira o URL do vídeo ou termo de pesquisa",
     manageVideos: "Gerenciar Vídeos",
+    instruction: "Instruções",
     
     // Home
     pasteUrl: "Colar URL de vídeo ou coleção",
@@ -376,4 +377,6 @@ export const pt = {
     instructionSection3Item3Label: "OpenList Cloud Drive:",
     instructionSection3Item3Text: "(Em Desenvolvimento) Suporta conexão com serviços OpenList implantados pelo usuário. Adicione a configuração aqui para habilitar a integração da unidade de nuvem.",
     history: 'Histórico',
+    downloading: "Baixando...",
+    poweredBy: "Com tecnologia de MyTube",
 };

frontend/src/utils/locales/ru.ts

@@ -9,6 +9,7 @@ export const ru = {
     uploadVideo: "Загрузить видео",
     enterUrlOrSearchTerm: "Введите URL видео или поисковый запрос",
     manageVideos: "Управление видео",
+    instruction: "Инструкция",
     
     // Home
     pasteUrl: "Вставьте URL видео или коллекции",
@@ -377,4 +378,6 @@ export const ru = {
     instructionSection3Item3Label: "Облачный диск OpenList:",
     instructionSection3Item3Text: "(В разработке) Поддерживает подключение к развернутым пользователем сервисам OpenList. Добавьте конфигурацию здесь, чтобы включить интеграцию с облачным диском.",
     history: 'История',
+    downloading: "Скачивание...",
+    poweredBy: "Работает на MyTube",
 };

frontend/src/utils/locales/zh.ts

@@ -359,6 +359,8 @@ export const zh = {
   videoSkippedExists: "视频已存在，跳过下载",
   videoSkippedDeleted: "视频曾被删除，跳过下载",
   history: "历史",
+  downloading: "下载中...",
+  poweredBy: "由 MyTube 提供支持",
 
   // Instruction Page
   instructionSection1Title: "1. 下载与任务管理",