fix(settings): say which runtime features the app withholds, and why

src/components/settings/view/tabs/AutomationSettingsTab.dom.bun.test.tsx

@@ -318,3 +318,58 @@ test('browser routing wording keys have parity across all ten settings locales',
     for (const [key, text] of Object.entries(actual)) assert.ok(text.trim().length > 0, `${locale}${key}`);
   }
 });
+
+/*
+ * The app overrides `mcp.discoveryMode`, `mcp.enableProjectConfig`,
+ * `tools.discoveryMode` and `astEdit.enabled` for every session. The overrides
+ * are the right call; saying nothing about them was not. "Works in the CLI,
+ * missing in the app, no error message" is an unanswerable support question.
+ */
+
+test('the withheld runtime features are reported with a reason for each', async () => {
+  fakeApi();
+  await mount();
+  await waitFor(() => assert.equal(backendSelect().disabled, false));
+
+  assert.ok(screen.getByText(english.automation.withheld));
+  assert.ok(screen.getByText(english.automation.withheldDescription));
+
+  for (const [label, reason] of [
+    [english.automation.withheldMcp, english.automation.withheldMcpReason],
+    [english.automation.withheldToolDiscovery, english.automation.withheldToolDiscoveryReason],
+    [english.automation.withheldAstEdit, english.automation.withheldAstEditReason],
+  ]) {
+    assert.ok(screen.getByText(label), label);
+    assert.ok(screen.getByText(reason), reason);
+  }
+});
+
+test('the withheld block offers nothing to switch on', async () => {
+  fakeApi();
+  await mount();
+  await waitFor(() => assert.equal(backendSelect().disabled, false));
+
+  // A session cannot turn these on either, so a control here would be a lie.
+  const row = screen.getByText(english.automation.withheldMcp).closest('div')?.parentElement;
+  assert.ok(row);
+  assert.equal(row.querySelector('button, input, select'), null);
+});
+
+test('withheld-feature wording keys have parity across all ten settings locales', () => {
+  const keys = [
+    'withheld', 'withheldDescription',
+    'withheldMcp', 'withheldMcpReason',
+    'withheldToolDiscovery', 'withheldToolDiscoveryReason',
+    'withheldAstEdit', 'withheldAstEditReason',
+  ] as const;
+
+  for (const locale of ['en', 'ko', 'de', 'fr', 'it', 'ja', 'ru', 'tr', 'zh-CN', 'zh-TW']) {
+    const file = new URL(`../../../../i18n/locales/${locale}/settings.json`, import.meta.url);
+    const translated = JSON.parse(readFileSync(file, 'utf8')) as { automation?: Record<string, unknown> };
+    for (const key of keys) {
+      const text = translated.automation?.[key];
+      assert.equal(typeof text, 'string', `${locale}.automation.${key}`);
+      assert.ok(String(text).trim().length > 0, `${locale}.automation.${key}`);
+    }
+  }
+});

src/components/settings/view/tabs/AutomationSettingsTab.tsx

@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useState } from 'react';
-import { ExternalLink, RefreshCw, ShieldCheck, Trash2 } from 'lucide-react';
+import { ExternalLink, RefreshCw, ShieldCheck, SquareSlash, Trash2 } from 'lucide-react';
 import { useTranslation } from 'react-i18next';
 
 import { useAppShellStore } from '../../../../stores/useAppShellStore';
@@ -306,6 +306,34 @@ export default function AutomationSettingsTab() {
           ))}
         </SettingsCard>
       </SettingsSection>
+
+      {/*
+        * The app overrides four runtime settings for every session:
+        * `mcp.discoveryMode`, `mcp.enableProjectConfig`, `tools.discoveryMode`
+        * and `astEdit.enabled`. Those overrides are a deliberate boundary and
+        * they stay - but until now nothing said so. A user whose MCP servers
+        * work in the GJC CLI found them simply absent here, with no error and
+        * no explanation, which is an unanswerable support question.
+        *
+        * Reports, not controls: there is nothing to toggle, because the point
+        * is that a session cannot toggle them either.
+        */}
+      <SettingsSection title={t('automation.withheld')} description={t('automation.withheldDescription')}>
+        <SettingsCard>
+          {([
+            ['mcp', 'automation.withheldMcp', 'automation.withheldMcpReason'],
+            ['toolDiscovery', 'automation.withheldToolDiscovery', 'automation.withheldToolDiscoveryReason'],
+            ['astEdit', 'automation.withheldAstEdit', 'automation.withheldAstEditReason'],
+          ] as const).map(([key, label, reason]) => (
+            <SettingsRow key={key} label={t(label)} description={t(reason)}>
+              <span className="flex shrink-0 items-center gap-1.5 text-xs text-muted-foreground">
+                <SquareSlash className="h-3.5 w-3.5" aria-hidden />
+                {t('automation.notInstalled')}
+              </span>
+            </SettingsRow>
+          ))}
+        </SettingsCard>
+      </SettingsSection>
     </div>
   );
 }

src/i18n/locales/de/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "Keine gespeicherten Automatisierungsgenehmigungen.",
     "origin": "Herkunft der Website",
     "application": "Desktop-Anwendung",
-    "revoke": "Genehmigung entfernen"
+    "revoke": "Genehmigung entfernen",
+    "withheld": "In der App deaktivierte Laufzeitfunktionen",
+    "withheldDescription": "Die App bestimmt ihren eigenen Werkzeugsatz. Unabhängig von Ihrer GJC-Konfiguration bleiben diese Laufzeitfunktionen in jeder Sitzung aus.",
+    "withheldMcp": "MCP-Server",
+    "withheldMcpReason": "Server aus Ihren GJC-Einstellungen und eine .mcp.json im Projekt werden nicht geladen, damit keine Werkzeuge in eine Sitzung gelangen, die die App nie gewählt hat.",
+    "withheldToolDiscovery": "Werkzeugsuche",
+    "withheldToolDiscoveryReason": "Sitzungen können zur Laufzeit keine weiteren Werkzeuge aktivieren; der von der App gewählte Satz ist der gesamte Satz.",
+    "withheldAstEdit": "AST-Bearbeitung",
+    "withheldAstEditReason": "Sie zeigt Änderungen nur als Vorschau und wendet sie über ein Werkzeug an, das die App nicht bereitstellt — sie würde also Änderungen anbieten, die eine Sitzung nie übernehmen könnte."
   },
   "notifications": {
     "title": "Hinweise",

src/i18n/locales/en/settings.json

@@ -184,7 +184,15 @@
     "noGrants": "No saved automation approvals.",
     "origin": "Site origin",
     "application": "Desktop application",
-    "revoke": "Remove approval"
+    "revoke": "Remove approval",
+    "withheld": "Withheld runtime features",
+    "withheldDescription": "The app decides its own tool set. These runtime features stay off for every session, whatever your GJC configuration says.",
+    "withheldMcp": "MCP servers",
+    "withheldMcpReason": "Servers from your GJC settings and a project .mcp.json are not loaded, so tools the app never chose cannot reach a session.",
+    "withheldToolDiscovery": "Tool discovery",
+    "withheldToolDiscoveryReason": "Sessions cannot activate additional tools at runtime; the app-selected set is the whole set.",
+    "withheldAstEdit": "AST edit",
+    "withheldAstEditReason": "It only previews rewrites and applies them through a tool the app does not expose, so it would advertise edits a session could never commit."
   },
   "notifications": {
     "title": "Notifications",

src/i18n/locales/fr/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "Aucune approbation d’automatisation enregistrée.",
     "origin": "Origine du site",
     "application": "Application de bureau",
-    "revoke": "Supprimer l'approbation"
+    "revoke": "Supprimer l'approbation",
+    "withheld": "Fonctions du runtime désactivées dans l'application",
+    "withheldDescription": "L'application décide de son propre jeu d'outils. Quelle que soit votre configuration GJC, ces fonctions du runtime restent désactivées dans toutes les sessions.",
+    "withheldMcp": "Serveurs MCP",
+    "withheldMcpReason": "Les serveurs de vos réglages GJC et un .mcp.json de projet ne sont pas chargés, afin qu'aucun outil que l'application n'a pas choisi n'atteigne une session.",
+    "withheldToolDiscovery": "Découverte d'outils",
+    "withheldToolDiscoveryReason": "Une session ne peut pas activer d'outils supplémentaires en cours d'exécution ; le jeu choisi par l'application est le jeu complet.",
+    "withheldAstEdit": "Édition AST",
+    "withheldAstEditReason": "Elle ne fait que prévisualiser les réécritures et les applique via un outil que l'application n'expose pas : elle annoncerait donc des modifications qu'une session ne pourrait jamais valider."
   },
   "notifications": {
     "title": "Alertes",

src/i18n/locales/it/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "Nessuna approvazione di automazione salvata.",
     "origin": "Origine del sito",
     "application": "Applicazione desktop",
-    "revoke": "Rimuovi l'approvazione"
+    "revoke": "Rimuovi l'approvazione",
+    "withheld": "Funzioni del runtime disattivate nell'app",
+    "withheldDescription": "L'app decide il proprio insieme di strumenti. Qualunque sia la tua configurazione GJC, queste funzioni del runtime restano disattivate in ogni sessione.",
+    "withheldMcp": "Server MCP",
+    "withheldMcpReason": "I server dalle tue impostazioni GJC e un .mcp.json di progetto non vengono caricati, così nessuno strumento che l'app non ha scelto raggiunge una sessione.",
+    "withheldToolDiscovery": "Rilevamento strumenti",
+    "withheldToolDiscoveryReason": "Le sessioni non possono attivare altri strumenti in esecuzione; l'insieme scelto dall'app è l'insieme completo.",
+    "withheldAstEdit": "Modifica AST",
+    "withheldAstEditReason": "Si limita ad anteprimare le riscritture e le applica tramite uno strumento che l'app non espone, quindi proporrebbe modifiche che una sessione non potrebbe mai confermare."
   },
   "notifications": {
     "title": "Avvisi",

src/i18n/locales/ja/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "保存された自動化の承認はありません。",
     "origin": "サイトのオリジン",
     "application": "デスクトップアプリケーション",
-    "revoke": "承認を削除"
+    "revoke": "承認を削除",
+    "withheld": "アプリで無効なランタイム機能",
+    "withheldDescription": "ツールセットはアプリが決定します。GJC の設定にかかわらず、以下のランタイム機能はすべてのセッションで無効です。",
+    "withheldMcp": "MCP サーバー",
+    "withheldMcpReason": "GJC 設定のサーバーとプロジェクトの .mcp.json は読み込まれません。アプリが選んでいないツールがセッションに届かないようにします。",
+    "withheldToolDiscovery": "ツール探索",
+    "withheldToolDiscoveryReason": "セッションは実行中に追加のツールを有効化できません。アプリが選んだ集合がすべてです。",
+    "withheldAstEdit": "AST 編集",
+    "withheldAstEditReason": "書き換えをプレビューするだけで、適用にはアプリが公開していないツールを使うため、セッションが決して確定できない編集を提示することになります。"
   },
   "notifications": {
     "title": "通知",

src/i18n/locales/ko/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "저장된 자동화 승인 없음.",
     "origin": "사이트 원본",
     "application": "데스크톱 애플리케이션",
-    "revoke": "승인 취소"
+    "revoke": "승인 취소",
+    "withheld": "앱에서 비활성화된 런타임 기능",
+    "withheldDescription": "앱이 자체 도구 집합을 결정합니다. GJC 설정과 무관하게 아래 런타임 기능은 모든 세션에서 꺼져 있습니다.",
+    "withheldMcp": "MCP 서버",
+    "withheldMcpReason": "GJC 설정의 서버와 프로젝트의 .mcp.json을 불러오지 않습니다. 앱이 선택하지 않은 도구가 세션에 닿지 못하게 합니다.",
+    "withheldToolDiscovery": "도구 탐색",
+    "withheldToolDiscoveryReason": "세션이 실행 중에 도구를 추가로 활성화할 수 없습니다. 앱이 선택한 집합이 전부입니다.",
+    "withheldAstEdit": "AST 편집",
+    "withheldAstEditReason": "수정안을 미리 보여주기만 하고 적용은 앱이 노출하지 않는 도구로 합니다. 세션이 절대 커밋할 수 없는 편집을 광고하게 됩니다."
   },
   "notifications": {
     "title": "알림 메시지",

src/i18n/locales/ru/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "Нет сохраненных разрешений на автоматизацию.",
     "origin": "Происхождение сайта",
     "application": "Настольное приложение",
-    "revoke": "Удалить одобрение"
+    "revoke": "Удалить одобрение",
+    "withheld": "Отключённые в приложении возможности среды",
+    "withheldDescription": "Приложение само определяет набор инструментов. Независимо от вашей конфигурации GJC эти возможности среды отключены во всех сессиях.",
+    "withheldMcp": "Серверы MCP",
+    "withheldMcpReason": "Серверы из ваших настроек GJC и файл .mcp.json проекта не загружаются, чтобы в сессию не попали инструменты, которых приложение не выбирало.",
+    "withheldToolDiscovery": "Поиск инструментов",
+    "withheldToolDiscoveryReason": "Сессия не может включать дополнительные инструменты во время работы: выбранный приложением набор — это весь набор.",
+    "withheldAstEdit": "Редактирование AST",
+    "withheldAstEditReason": "Оно лишь показывает предпросмотр правок и применяет их инструментом, которого приложение не предоставляет, — то есть предлагало бы правки, которые сессия никогда не смогла бы применить."
   },
   "notifications": {
     "title": "Центр уведомлений",

src/i18n/locales/tr/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "Kaydedilmiş otomasyon onayı yok.",
     "origin": "Sitenin kökeni",
     "application": "Masaüstü uygulaması",
-    "revoke": "Onayı kaldır"
+    "revoke": "Onayı kaldır",
+    "withheld": "Uygulamada devre dışı çalışma zamanı özellikleri",
+    "withheldDescription": "Araç kümesine uygulama karar verir. GJC yapılandırmanız ne olursa olsun bu çalışma zamanı özellikleri her oturumda kapalıdır.",
+    "withheldMcp": "MCP sunucuları",
+    "withheldMcpReason": "GJC ayarlarınızdaki sunucular ve projedeki .mcp.json yüklenmez; böylece uygulamanın seçmediği araçlar bir oturuma ulaşamaz.",
+    "withheldToolDiscovery": "Araç keşfi",
+    "withheldToolDiscoveryReason": "Oturumlar çalışırken ek araç etkinleştiremez; uygulamanın seçtiği küme kümenin tamamıdır.",
+    "withheldAstEdit": "AST düzenleme",
+    "withheldAstEditReason": "Yalnızca yeniden yazımları önizler ve bunları uygulamanın sunmadığı bir araçla uygular; yani oturumun asla işleyemeyeceği düzenlemeleri duyurur."
   },
   "notifications": {
     "title": "Uygulama bildirimleri",

src/i18n/locales/zh-CN/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "没有保存的自动化批准。",
     "origin": "站点来源",
     "application": "桌面应用",
-    "revoke": "移除批准"
+    "revoke": "移除批准",
+    "withheld": "应用中停用的运行时功能",
+    "withheldDescription": "工具集由应用决定。无论你的 GJC 配置如何，以下运行时功能在所有会话中都保持关闭。",
+    "withheldMcp": "MCP 服务器",
+    "withheldMcpReason": "不会加载你 GJC 设置中的服务器和项目里的 .mcp.json，以免应用从未选择的工具进入会话。",
+    "withheldToolDiscovery": "工具发现",
+    "withheldToolDiscoveryReason": "会话无法在运行时激活额外工具；应用选定的集合就是全部集合。",
+    "withheldAstEdit": "AST 编辑",
+    "withheldAstEditReason": "它只预览改写，并通过应用未开放的工具来应用，因此会展示会话永远无法提交的编辑。"
   },
   "notifications": {
     "title": "通知",

src/i18n/locales/zh-TW/settings.json

@@ -169,7 +169,15 @@
     "noGrants": "無存儲自動化批准。",
     "origin": "網站原始碼",
     "application": "桌面應用程式",
-    "revoke": "移除批准"
+    "revoke": "移除批准",
+    "withheld": "應用程式中停用的執行階段功能",
+    "withheldDescription": "工具集由應用程式決定。無論你的 GJC 設定為何，以下執行階段功能在所有工作階段中都保持關閉。",
+    "withheldMcp": "MCP 伺服器",
+    "withheldMcpReason": "不會載入你 GJC 設定中的伺服器與專案中的 .mcp.json，以免應用程式從未選擇的工具進入工作階段。",
+    "withheldToolDiscovery": "工具探索",
+    "withheldToolDiscoveryReason": "工作階段無法在執行期間啟用額外工具；應用程式選定的集合就是全部集合。",
+    "withheldAstEdit": "AST 編輯",
+    "withheldAstEditReason": "它只預覽改寫，並透過應用程式未開放的工具套用，因此會展示工作階段永遠無法提交的編輯。"
   },
   "notifications": {
     "title": "通知",