diff --git a/packages/opencode/src/cli/cmd/tui/feature-plugins/system/plugins.tsx b/packages/opencode/src/cli/cmd/tui/feature-plugins/system/plugins.tsx
index b40b0f51..83d9e512 100644
--- a/packages/opencode/src/cli/cmd/tui/feature-plugins/system/plugins.tsx
+++ b/packages/opencode/src/cli/cmd/tui/feature-plugins/system/plugins.tsx
@@ -39,6 +39,7 @@ function meta(item: TuiPluginStatus, width: number) {
 }
 
 function Install(props: { api: TuiPluginApi }) {
+  const { t } = useLanguage()
   const [global, setGlobal] = createSignal(false)
   const [busy, setBusy] = createSignal(false)
 
@@ -52,10 +53,10 @@ function Install(props: { api: TuiPluginApi }) {
 
   return (
     <props.api.ui.DialogPrompt
-      title="Install plugin"
+      title={t("tui.plugin.install.title")}
       placeholder="npm package name"
       busy={busy()}
-      busyText="Installing plugin..."
+      busyText={t("tui.plugin.install.busy")}
       description={() => (
         <box flexDirection="row" gap={1}>
           <text fg={props.api.theme.current.textMuted}>scope:</text>
@@ -73,7 +74,7 @@ function Install(props: { api: TuiPluginApi }) {
         if (!mod) {
           props.api.ui.toast({
             variant: "error",
-            message: "Plugin package name is required",
+            message: t("tui.plugin.install.name_required"),
           })
           return
         }
@@ -90,7 +91,7 @@ function Install(props: { api: TuiPluginApi }) {
               if (out.missing) {
                 props.api.ui.toast({
                   variant: "info",
-                  message: "Check npm registry/auth settings and try again.",
+                  message: t("tui.plugin.install.check_npm"),
                 })
               }
               show(props.api)
@@ -104,7 +105,7 @@ function Install(props: { api: TuiPluginApi }) {
             if (!out.tui) {
               props.api.ui.toast({
                 variant: "info",
-                message: "Package has no TUI target to load in this app.",
+                message: t("tui.plugin.install.no_tui_target"),
               })
               show(props.api)
               return
@@ -114,7 +115,7 @@ function Install(props: { api: TuiPluginApi }) {
               if (!ok) {
                 props.api.ui.toast({
                   variant: "warning",
-                  message: "Installed plugin, but runtime load failed. See console/logs; restart TUI to retry.",
+                  message: t("tui.plugin.install.load_failed"),
                 })
                 show(props.api)
                 return
@@ -154,6 +155,7 @@ function showInstall(api: TuiPluginApi) {
 }
 
 function View(props: { api: TuiPluginApi }) {
+  const { t } = useLanguage()
   const size = useTerminalDimensions()
   const [list, setList] = createSignal(props.api.plugins.list())
   const [cur, setCur] = createSignal<string | undefined>()
@@ -206,7 +208,7 @@ function View(props: { api: TuiPluginApi }) {
 
   return (
     <DialogSelect
-      title="Plugins"
+      title={t("tui.plugin.list.title")}
       options={rows()}
       current={cur()}
       onMove={(item) => setCur(item.value)}
diff --git a/packages/opencode/src/cli/cmd/tui/i18n/en.ts b/packages/opencode/src/cli/cmd/tui/i18n/en.ts
index 68c9eb2a..2e78c746 100644
--- a/packages/opencode/src/cli/cmd/tui/i18n/en.ts
+++ b/packages/opencode/src/cli/cmd/tui/i18n/en.ts
@@ -428,4 +428,12 @@ export const dict: Record<string, string> = {
   "trust.dangerous.advice_root": "Unless you have a very specific reason, DO NOT trust the filesystem root.",
   "trust.dangerous.option.yes": "I understand the risks, trust for this session",
   "trust.dangerous.option.no": "Exit (recommended)",
+
+  // Plugin install UI
+  "tui.plugin.install.title": "Install plugin",
+  "tui.plugin.install.busy": "Installing plugin...",
+  "tui.plugin.install.name_required": "Plugin package name is required",
+  "tui.plugin.install.check_npm": "Check npm registry/auth settings and try again.",
+  "tui.plugin.install.no_tui_target": "Package has no TUI target to load in this app.",
+  "tui.plugin.install.load_failed": "Installed plugin, but runtime load failed. See console/logs; restart TUI to retry.",
 }
diff --git a/packages/opencode/src/cli/cmd/tui/i18n/es.ts b/packages/opencode/src/cli/cmd/tui/i18n/es.ts
index 5160b363..279527d6 100644
--- a/packages/opencode/src/cli/cmd/tui/i18n/es.ts
+++ b/packages/opencode/src/cli/cmd/tui/i18n/es.ts
@@ -470,4 +470,12 @@ export const dict = {
   "tui.dialog.login.flow.waiting": "Esperando autorización del navegador...",
   "tui.dialog.login.flow.invalid_code": "Código inválido, intenta de nuevo",
   "tui.dialog.login.flow.copied": "Copiado",
+
+  // Plugin install UI
+  "tui.plugin.install.title": "Instalar plugin",
+  "tui.plugin.install.busy": "Instalando plugin...",
+  "tui.plugin.install.name_required": "Se requiere el nombre del paquete del plugin",
+  "tui.plugin.install.check_npm": "Verifica la configuración del registro/autenticación de npm e inténtalo de nuevo.",
+  "tui.plugin.install.no_tui_target": "El paquete no tiene un objetivo TUI para cargar en esta aplicación.",
+  "tui.plugin.install.load_failed": "Plugin instalado, pero la carga en runtime falló. Ver consola/logs; reinicia TUI para reintentar.",
 } satisfies Partial<Record<Keys, string>>
diff --git a/packages/opencode/src/cli/cmd/tui/i18n/fr.ts b/packages/opencode/src/cli/cmd/tui/i18n/fr.ts
index 3f462f74..13e025a2 100644
--- a/packages/opencode/src/cli/cmd/tui/i18n/fr.ts
+++ b/packages/opencode/src/cli/cmd/tui/i18n/fr.ts
@@ -477,4 +477,12 @@ export const dict = {
   "trust.dangerous.advice_root": "Sauf raison très spécifique, NE faites PAS confiance à la racine du système de fichiers.",
   "trust.dangerous.option.yes": "Je comprends les risques, faire confiance pour cette session",
   "trust.dangerous.option.no": "Quitter (recommandé)",
+
+  // Plugin install UI
+  "tui.plugin.install.title": "Installer un plugin",
+  "tui.plugin.install.busy": "Installation du plugin...",
+  "tui.plugin.install.name_required": "Le nom du paquet du plugin est requis",
+  "tui.plugin.install.check_npm": "Vérifiez les paramètres du registre/authentification npm et réessayez.",
+  "tui.plugin.install.no_tui_target": "Le paquet n'a pas de cible TUI à charger dans cette application.",
+  "tui.plugin.install.load_failed": "Plugin installé, mais le chargement en runtime a échoué. Consultez les logs ; redémarrez le TUI pour réessayer.",
 } satisfies Partial<Record<Keys, string>>
diff --git a/packages/opencode/src/cli/cmd/tui/i18n/ja.ts b/packages/opencode/src/cli/cmd/tui/i18n/ja.ts
index 6f79d969..b390fb9f 100644
--- a/packages/opencode/src/cli/cmd/tui/i18n/ja.ts
+++ b/packages/opencode/src/cli/cmd/tui/i18n/ja.ts
@@ -429,4 +429,12 @@ export const dict = {
   "trust.dangerous.advice_root": "明確な理由がない限り、ファイルシステムのルートを信頼しないでください。",
   "trust.dangerous.option.yes": "リスクを理解した上で、今回のみ信頼する",
   "trust.dangerous.option.no": "終了（推奨）",
+
+  // Plugin install UI
+  "tui.plugin.install.title": "プラグインをインストール",
+  "tui.plugin.install.busy": "プラグインをインストール中...",
+  "tui.plugin.install.name_required": "プラグインパッケージ名が必要です",
+  "tui.plugin.install.check_npm": "npmレジストリ/認証設定を確認して再試行してください。",
+  "tui.plugin.install.no_tui_target": "このアプリで読み込めるTUIターゲットがありません。",
+  "tui.plugin.install.load_failed": "インストールされましたが、ランタイムの読み込みに失敗しました。ログを確認し、TUIを再起動してください。",
 } satisfies Partial<Record<Keys, string>>
diff --git a/packages/opencode/src/cli/cmd/tui/i18n/ru.ts b/packages/opencode/src/cli/cmd/tui/i18n/ru.ts
index ee774a06..4fc0282b 100644
--- a/packages/opencode/src/cli/cmd/tui/i18n/ru.ts
+++ b/packages/opencode/src/cli/cmd/tui/i18n/ru.ts
@@ -489,4 +489,12 @@ export const dict = {
   "trust.dangerous.advice_root": "Если нет весомой причины, НЕ доверяйте корню файловой системы.",
   "trust.dangerous.option.yes": "Я понимаю риски, доверять только в этой сессии",
   "trust.dangerous.option.no": "Выйти (рекомендуется)",
+
+  // Plugin install UI
+  "tui.plugin.install.title": "Установить плагин",
+  "tui.plugin.install.busy": "Установка плагина...",
+  "tui.plugin.install.name_required": "Требуется имя пакета плагина",
+  "tui.plugin.install.check_npm": "Проверьте настройки реестра/аутентификации npm и попробуйте снова.",
+  "tui.plugin.install.no_tui_target": "Пакет не имеет TUI-цели для загрузки в этом приложении.",
+  "tui.plugin.install.load_failed": "Плагин установлен, но загрузка не удалась. См. логи; перезапустите TUI для повторной попытки.",
 } satisfies Partial<Record<Keys, string>>
diff --git a/packages/opencode/src/cli/cmd/tui/i18n/zh.ts b/packages/opencode/src/cli/cmd/tui/i18n/zh.ts
index cf12b5e0..e9add6a0 100644
--- a/packages/opencode/src/cli/cmd/tui/i18n/zh.ts
+++ b/packages/opencode/src/cli/cmd/tui/i18n/zh.ts
@@ -421,4 +421,12 @@ export const dict = {
   "trust.dangerous.advice_root": "除非有明确的理由，否则不要信任文件系统根目录。",
   "trust.dangerous.option.yes": "我了解风险，仅本次信任",
   "trust.dangerous.option.no": "退出（推荐）",
+
+  // Plugin install UI
+  "tui.plugin.install.title": "安装插件",
+  "tui.plugin.install.busy": "正在安装插件...",
+  "tui.plugin.install.name_required": "请输入插件包名",
+  "tui.plugin.install.check_npm": "请检查 npm 注册表/认证设置后重试。",
+  "tui.plugin.install.no_tui_target": "该包没有可在此应用中加载的 TUI 目标。",
+  "tui.plugin.install.load_failed": "插件已安装，但运行时加载失败。请查看日志；重启 TUI 后重试。",
 } satisfies Partial<Record<Keys, string>>
diff --git a/packages/opencode/src/cli/cmd/tui/i18n/zht.ts b/packages/opencode/src/cli/cmd/tui/i18n/zht.ts
index fb097786..9ef30239 100644
--- a/packages/opencode/src/cli/cmd/tui/i18n/zht.ts
+++ b/packages/opencode/src/cli/cmd/tui/i18n/zht.ts
@@ -397,4 +397,12 @@ export const dict = {
   "tui.dialog.login.flow.waiting": "等待瀏覽器授權中...",
   "tui.dialog.login.flow.invalid_code": "Code 無效，請重試",
   "tui.dialog.login.flow.copied": "已複製",
+
+  // Plugin install UI
+  "tui.plugin.install.title": "安裝外掛",
+  "tui.plugin.install.busy": "正在安裝外掛...",
+  "tui.plugin.install.name_required": "請輸入外掛套件名稱",
+  "tui.plugin.install.check_npm": "請檢查 npm 註冊表/認證設定後重試。",
+  "tui.plugin.install.no_tui_target": "該套件沒有可在此應用程式中載入的 TUI 目標。",
+  "tui.plugin.install.load_failed": "外掛已安裝，但執行時期載入失敗。請查看日誌；重啟 TUI 後重試。",
 } satisfies Partial<Record<Keys, string>>