fix(i18n): add missing managed-account selector keys

The managed OAuth account selector referenced codexOauth.chatgptAccount,
codexOauth.manageAccounts, copilot.githubAccount, copilot.manageAccounts and
providerForm.providerKeyStatusLoading with Chinese defaultValue fallbacks, so
the en/ja/zh-TW UIs rendered Chinese text. Add the translations across all four
locales.

Addresses review feedback on #3879.

src/i18n/locales/en.json

@@ -1148,7 +1148,8 @@
     "fetchModelsAuthFailed": "API Key is invalid or lacks permission",
     "fetchModelsNotSupported": "This provider does not support fetching model list",
     "fetchModelsEndpointNotFound": "No reachable models endpoint found. Please check the Base URL or confirm whether the provider exposes this API.",
-    "fetchModelsTimeout": "Request timed out, please check network connection"
+    "fetchModelsTimeout": "Request timed out, please check network connection",
+    "providerKeyStatusLoading": "Loading provider key status, please try again shortly"
   },
   "copilot": {
     "authSection": "GitHub Copilot Authentication",
@@ -1156,6 +1157,8 @@
     "authenticated": "Authenticated as {{username}}",
     "notAuthenticated": "Not authenticated",
     "loginWithGitHub": "Login with GitHub",
+    "githubAccount": "GitHub account",
+    "manageAccounts": "Manage accounts",
     "loginRequired": "Please login to GitHub Copilot first",
     "waitingForAuth": "Waiting for authorization...",
     "enterCode": "Please enter the code in your browser:",
@@ -1193,6 +1196,8 @@
     "enterCode": "Enter the code in your browser:",
     "accountCount": "{{count}} account(s)",
     "selectAccount": "Select account",
+    "chatgptAccount": "ChatGPT account",
+    "manageAccounts": "Manage accounts",
     "selectAccountPlaceholder": "Choose a ChatGPT account",
     "useDefaultAccount": "Use default account",
     "noneOptionLabel": "Don't bind a managed account, use browser login",

src/i18n/locales/ja.json

@@ -1148,7 +1148,8 @@
     "fetchModelsAuthFailed": "API Key が無効か、権限がありません",
     "fetchModelsNotSupported": "このプロバイダーはモデル一覧の取得に対応していません",
     "fetchModelsEndpointNotFound": "利用可能なモデル一覧エンドポイントが見つかりません。Base URL を確認するか、プロバイダーが該当 API を公開しているかご確認ください",
-    "fetchModelsTimeout": "リクエストがタイムアウトしました。ネットワーク接続を確認してください"
+    "fetchModelsTimeout": "リクエストがタイムアウトしました。ネットワーク接続を確認してください",
+    "providerKeyStatusLoading": "プロバイダー識別状態を読み込み中です。しばらくしてからもう一度お試しください"
   },
   "copilot": {
     "authSection": "GitHub Copilot 認証",
@@ -1156,6 +1157,8 @@
     "authenticated": "認証済み: {{username}}",
     "notAuthenticated": "未認証",
     "loginWithGitHub": "GitHub でログイン",
+    "githubAccount": "GitHub アカウント",
+    "manageAccounts": "アカウント管理",
     "loginRequired": "先に GitHub Copilot にログインしてください",
     "waitingForAuth": "認証を待っています...",
     "enterCode": "ブラウザで以下のコードを入力してください：",
@@ -1193,6 +1196,8 @@
     "enterCode": "ブラウザで以下のコードを入力してください：",
     "accountCount": "{{count}} アカウント",
     "selectAccount": "アカウントを選択",
+    "chatgptAccount": "ChatGPT アカウント",
+    "manageAccounts": "アカウント管理",
     "selectAccountPlaceholder": "ChatGPT アカウントを選択",
     "useDefaultAccount": "デフォルトアカウントを使用",
     "noneOptionLabel": "管理アカウントをバインドせず、ブラウザでログイン",

src/i18n/locales/zh-TW.json

@@ -1120,7 +1120,8 @@
     "fetchModelsAuthFailed": "API Key 無效或無權限",
     "fetchModelsNotSupported": "該供應商不支援取得模型清單",
     "fetchModelsEndpointNotFound": "未找到可用的模型清單端點，請檢查 Base URL 或確認供應商是否開放該 API",
-    "fetchModelsTimeout": "請求逾時，請檢查網路連線"
+    "fetchModelsTimeout": "請求逾時，請檢查網路連線",
+    "providerKeyStatusLoading": "正在載入供應商標識狀態，請稍後再試"
   },
   "copilot": {
     "authSection": "GitHub Copilot 驗證",
@@ -1128,6 +1129,8 @@
     "authenticated": "已驗證: {{username}}",
     "notAuthenticated": "未驗證",
     "loginWithGitHub": "使用 GitHub 登入",
+    "githubAccount": "GitHub 帳號",
+    "manageAccounts": "管理帳號",
     "loginRequired": "請先登入 GitHub Copilot",
     "waitingForAuth": "等待授權中...",
     "enterCode": "請在瀏覽器中輸入驗證碼：",
@@ -1165,6 +1168,8 @@
     "enterCode": "請在瀏覽器中輸入以下驗證碼：",
     "accountCount": "{{count}} 個帳號",
     "selectAccount": "選擇帳號",
+    "chatgptAccount": "ChatGPT 帳號",
+    "manageAccounts": "管理帳號",
     "selectAccountPlaceholder": "選擇一個 ChatGPT 帳號",
     "useDefaultAccount": "使用預設帳號",
     "noneOptionLabel": "暫不綁定託管帳號，使用瀏覽器登入",

src/i18n/locales/zh.json

@@ -1148,7 +1148,8 @@
     "fetchModelsAuthFailed": "API Key 无效或无权限",
     "fetchModelsNotSupported": "该供应商不支持获取模型列表",
     "fetchModelsEndpointNotFound": "未找到可用的模型列表端点，请检查 Base URL 或确认供应商是否开放该接口",
-    "fetchModelsTimeout": "请求超时，请检查网络连接"
+    "fetchModelsTimeout": "请求超时，请检查网络连接",
+    "providerKeyStatusLoading": "正在加载供应商标识状态，请稍后再试"
   },
   "copilot": {
     "authSection": "GitHub Copilot 认证",
@@ -1156,6 +1157,8 @@
     "authenticated": "已认证: {{username}}",
     "notAuthenticated": "未认证",
     "loginWithGitHub": "使用 GitHub 登录",
+    "githubAccount": "GitHub 账号",
+    "manageAccounts": "管理账号",
     "loginRequired": "请先登录 GitHub Copilot",
     "waitingForAuth": "等待授权中...",
     "enterCode": "请在浏览器中输入验证码：",
@@ -1193,6 +1196,8 @@
     "enterCode": "请在浏览器中输入以下验证码：",
     "accountCount": "{{count}} 个账号",
     "selectAccount": "选择账号",
+    "chatgptAccount": "ChatGPT 账号",
+    "manageAccounts": "管理账号",
     "selectAccountPlaceholder": "选择一个 ChatGPT 账号",
     "useDefaultAccount": "使用默认账号",
     "noneOptionLabel": "暂不绑定托管账号，使用浏览器登录",