feat(i18n): add model error and provider status locale keys

Add chat keys for model error toast messages (invalid_api_key,
model_not_found, insufficient_quota) and setting keys for API key
invalid warning and default model unavailable labels across all
11 locales.

Author: eureka0928

src/i18n/locales/ar/chat.json

@@ -49,5 +49,9 @@
   "new-project": "مشروع جديد",
   "no-reply-received-task-continue": "لم يتم استلام رد، تستمر المهمة",
   "open-in-ide": "فتح في IDE",
-  "failed-to-open-folder": "فشل في فتح المجلد"
+  "failed-to-open-folder": "فشل في فتح المجلد",
+  "model-error-go-to-settings": "Model Settings",
+  "model-error-invalid-api-key": "Your API key is invalid or expired. Please update it in",
+  "model-error-model-not-found": "The configured model was not found. Please check your settings in",
+  "model-error-quota-exceeded": "You've exceeded your API quota. Please check your plan or update your key in"
 }

src/i18n/locales/ar/setting.json

@@ -363,5 +363,7 @@
 
   "preferred-ide": "IDE المفضل",
   "preferred-ide-description": "اختر التطبيق الذي سيتم استخدامه عند فتح مجلدات مشاريع الوكيل.",
-  "system-file-manager": "مدير ملفات النظام"
+  "system-file-manager": "مدير ملفات النظام",
+  "api-key-invalid-or-expired": "API Key Invalid or Expired — please re-verify",
+  "default-model-unavailable": "Default model unavailable — please select another"
 }

src/i18n/locales/de/chat.json

@@ -49,5 +49,9 @@
   "new-project": "Neues Projekt",
   "no-reply-received-task-continue": "Keine Antwort erhalten, Aufgabe wird fortgesetzt",
   "open-in-ide": "In IDE öffnen",
-  "failed-to-open-folder": "Ordner konnte nicht geöffnet werden"
+  "failed-to-open-folder": "Ordner konnte nicht geöffnet werden",
+  "model-error-go-to-settings": "Model Settings",
+  "model-error-invalid-api-key": "Your API key is invalid or expired. Please update it in",
+  "model-error-model-not-found": "The configured model was not found. Please check your settings in",
+  "model-error-quota-exceeded": "You've exceeded your API quota. Please check your plan or update your key in"
 }

src/i18n/locales/de/setting.json

@@ -273,5 +273,7 @@
 
   "preferred-ide": "Bevorzugte IDE",
   "preferred-ide-description": "Wählen Sie die Anwendung aus, die beim Öffnen von Agent-Projektordnern verwendet werden soll.",
-  "system-file-manager": "System-Dateimanager"
+  "system-file-manager": "System-Dateimanager",
+  "api-key-invalid-or-expired": "API Key Invalid or Expired — please re-verify",
+  "default-model-unavailable": "Default model unavailable — please select another"
 }

src/i18n/locales/en-us/chat.json

@@ -49,5 +49,9 @@
   "new-project": "Untitled Project",
   "no-reply-received-task-continue": "No reply received, task continue",
   "open-in-ide": "Open in IDE",
-  "failed-to-open-folder": "Failed to open folder"
+  "failed-to-open-folder": "Failed to open folder",
+  "model-error-go-to-settings": "Model Settings",
+  "model-error-invalid-api-key": "Your API key is invalid or expired. Please update it in",
+  "model-error-model-not-found": "The configured model was not found. Please check your settings in",
+  "model-error-quota-exceeded": "You've exceeded your API quota. Please check your plan or update your key in"
 }

src/i18n/locales/en-us/setting.json

@@ -419,5 +419,7 @@
 
   "preferred-ide": "Preferred IDE",
   "preferred-ide-description": "Choose which application to use when opening agent project folders.",
-  "system-file-manager": "System File Manager"
+  "system-file-manager": "System File Manager",
+  "api-key-invalid-or-expired": "API Key Invalid or Expired — please re-verify",
+  "default-model-unavailable": "Default model unavailable — please select another"
 }

src/i18n/locales/es/chat.json

@@ -49,5 +49,9 @@
   "new-project": "Nuevo proyecto",
   "no-reply-received-task-continue": "No se recibió respuesta, la tarea continúa",
   "open-in-ide": "Abrir en IDE",
-  "failed-to-open-folder": "No se pudo abrir la carpeta"
+  "failed-to-open-folder": "No se pudo abrir la carpeta",
+  "model-error-go-to-settings": "Model Settings",
+  "model-error-invalid-api-key": "Your API key is invalid or expired. Please update it in",
+  "model-error-model-not-found": "The configured model was not found. Please check your settings in",
+  "model-error-quota-exceeded": "You've exceeded your API quota. Please check your plan or update your key in"
 }

src/i18n/locales/es/setting.json

@@ -273,5 +273,7 @@
 
   "preferred-ide": "IDE preferido",
   "preferred-ide-description": "Elija qué aplicación usar al abrir las carpetas de proyectos del agente.",
-  "system-file-manager": "Administrador de archivos del sistema"
+  "system-file-manager": "Administrador de archivos del sistema",
+  "api-key-invalid-or-expired": "API Key Invalid or Expired — please re-verify",
+  "default-model-unavailable": "Default model unavailable — please select another"
 }

src/i18n/locales/fr/chat.json

@@ -49,5 +49,9 @@
   "new-project": "Nouveau projet",
   "no-reply-received-task-continue": "Aucune réponse reçue, la tâche continue",
   "open-in-ide": "Ouvrir dans l'IDE",
-  "failed-to-open-folder": "Impossible d'ouvrir le dossier"
+  "failed-to-open-folder": "Impossible d'ouvrir le dossier",
+  "model-error-go-to-settings": "Model Settings",
+  "model-error-invalid-api-key": "Your API key is invalid or expired. Please update it in",
+  "model-error-model-not-found": "The configured model was not found. Please check your settings in",
+  "model-error-quota-exceeded": "You've exceeded your API quota. Please check your plan or update your key in"
 }

src/i18n/locales/fr/setting.json

@@ -249,5 +249,7 @@
 
   "preferred-ide": "IDE préféré",
   "preferred-ide-description": "Choisissez l'application à utiliser lors de l'ouverture des dossiers de projets d'agent.",
-  "system-file-manager": "Gestionnaire de fichiers système"
+  "system-file-manager": "Gestionnaire de fichiers système",
+  "api-key-invalid-or-expired": "API Key Invalid or Expired — please re-verify",
+  "default-model-unavailable": "Default model unavailable — please select another"
 }