feat(agents): add Antigravity IDE and CLI support

- Add separate configuration entries for IDE and CLI
- Integrate Gemini-compatible routing and scoped credentials
- Support detection, launch, backup, restore, and IDE restart
- Add localized guidance and configuration, UI, and native integration tests

src/i18n/ja.ts

@@ -937,6 +937,10 @@ export const jaOverrides = {
   'agents.description.openclaw': 'CPA モデルプロバイダーと既定モデルを使用',
   'agents.description.hermes': 'CPA カスタムプロバイダーを使用',
   'agents.description.deepseekHarness': 'Harness のネイティブ DeepSeek 設定と分離された OpenAI 互換ルートで CPA を使用',
+  'agents.description.antigravityIde': 'CPA の Gemini 互換 API で Antigravity IDE を設定',
+  'agents.description.antigravityCli': 'CPA の Gemini 互換 API で Antigravity CLI を設定',
+  'agents.modify.antigravityIdeHint': '設定の適用・解除後は IDE を再起動してください。リクエストにはここで選択した CPA モデルが使用され、IDE 内のモデル表示名は変わりません。初回は IDE へのログインが必要です。',
+  'agents.modify.antigravityCliHint': '設定適用後はこのページの起動ボタンを使用してください。CPA が CLI プロセスに接続先とキーを渡します。agy を直接実行する場合は環境変数の設定が必要です。',
   'agents.description.workbuddy': 'CPA の OpenAI Chat Completions API で WorkBuddy のカスタムモデルを設定',
   'agents.modify.workbuddyHint': '適用後、WorkBuddy で「CPA:モデル名」を選択してください。表示されない場合は App を再起動してください。既存の会話のモデルは自動で切り替わりません。',
   'agents.description.zcode': 'CPA の Anthropic Messages API と動的モデルカタログを使用',

src/i18n/locales/en.ts

@@ -937,6 +937,10 @@ export const en: Record<MessageKey, string> = {
   'agents.description.openclaw': 'Uses the CPA model provider and default model',
   'agents.description.hermes': 'Uses the CPA custom provider',
   'agents.description.deepseekHarness': 'Uses CPA through an isolated, OpenAI-compatible Harness route',
+  'agents.description.antigravityIde': 'Configure Antigravity IDE with CPA’s Gemini-compatible API',
+  'agents.description.antigravityCli': 'Configure Antigravity CLI with CPA’s Gemini-compatible API',
+  'agents.modify.antigravityIdeHint': 'Restart the IDE after applying or disabling configuration. Requests use the CPA model selected here; model labels inside the IDE stay unchanged. Initial IDE sign-in is still required.',
+  'agents.modify.antigravityCliHint': 'Use Launch on this page after applying configuration. CPA supplies the endpoint and key to that CLI process. Running agy directly requires setting the environment variables yourself.',
   'agents.description.workbuddy': 'Configures a WorkBuddy custom model using the CPA OpenAI Chat Completions API',
   'agents.modify.workbuddyHint': 'After applying, select “CPA:model name” in WorkBuddy. Restart the app if it is missing; existing conversations keep their selected model.',
   'agents.description.zcode': 'Uses the CPA Anthropic Messages API and dynamic model catalog',

src/i18n/locales/zh-CN.ts

@@ -936,6 +936,10 @@ export const zhCN = {
   'agents.description.openclaw': '使用 CPA 模型供应商和默认模型',
   'agents.description.hermes': '使用 CPA 自定义提供方',
   'agents.description.deepseekHarness': '通过通用 OpenAI 兼容路由使用 CPA，并与 Harness 原生 DeepSeek 配置隔离',
+  'agents.description.antigravityIde': '使用 CPA 的 Gemini 兼容接口配置 Antigravity IDE',
+  'agents.description.antigravityCli': '使用 CPA 的 Gemini 兼容接口配置 Antigravity CLI',
+  'agents.modify.antigravityIdeHint': '应用或关闭配置后请重启 IDE。模型请求使用此处选择的 CPA 模型；IDE 内的模型标签保持原样。首次使用仍需完成 IDE 登录。',
+  'agents.modify.antigravityCliHint': '应用后请使用此页的启动按钮，CPA 会为本次 CLI 进程注入地址和密钥。直接运行 agy 需要自行设置环境变量。',
   'agents.description.workbuddy': '使用 CPA 的 OpenAI Chat Completions 接口配置 WorkBuddy 自定义模型',
   'agents.modify.workbuddyHint': '应用后，在 WorkBuddy 的模型选择器中选择「CPA:模型名」。若未显示，请重启 App；已有会话的模型不会自动切换。',
   'agents.description.zcode': '使用 CPA 的 Anthropic Messages 接口和动态模型目录',

src/pages/AgentsPage.tsx

@@ -37,6 +37,7 @@ import opencodeIcon from '../assets/icons/opencode.svg';
 import piIcon from '../assets/icons/pi-logo-on-light.svg';
 import zcodeIcon from '../assets/icons/zcode.png';
 import workbuddyIcon from '../assets/icons/workbuddy.png';
+import antigravityIcon from '../assets/icons/antigravity.svg';
 import {
   agentModelAlias,
   filterAgentModels,
@@ -81,6 +82,8 @@ type AgentClientId =
   | 'deepseek-harness'
   | 'zcode'
   | 'workbuddy'
+  | 'antigravity-ide'
+  | 'antigravity-cli'
   | 'kimi-code'
   | 'grok-build'
   | 'pi';
@@ -230,7 +233,7 @@ type AgentDefinition = {
   name: string;
   icon?: string;
   Icon?: ComponentType<{ size?: number; 'aria-hidden'?: boolean }>;
-  descriptionKey: 'agents.description.claudeCode' | 'agents.description.claudeDesktop' | 'agents.description.codex' | 'agents.description.opencode' | 'agents.description.openclaw' | 'agents.description.hermes' | 'agents.description.deepseekHarness' | 'agents.description.zcode' | 'agents.description.workbuddy' | 'agents.description.kimiCode' | 'agents.description.grokBuild' | 'agents.description.pi';
+  descriptionKey: 'agents.description.claudeCode' | 'agents.description.claudeDesktop' | 'agents.description.codex' | 'agents.description.opencode' | 'agents.description.openclaw' | 'agents.description.hermes' | 'agents.description.deepseekHarness' | 'agents.description.zcode' | 'agents.description.workbuddy' | 'agents.description.antigravityIde' | 'agents.description.antigravityCli' | 'agents.description.kimiCode' | 'agents.description.grokBuild' | 'agents.description.pi';
 };
 
 type AgentSubpageId = 'core' | 'management' | 'sessions';
@@ -284,6 +287,8 @@ const agentDefinitions: AgentDefinition[] = [
     icon: grokIcon,
     descriptionKey: 'agents.description.grokBuild',
   },
+  { id: 'antigravity-ide', name: 'Antigravity IDE', icon: antigravityIcon, descriptionKey: 'agents.description.antigravityIde' },
+  { id: 'antigravity-cli', name: 'Antigravity CLI', icon: antigravityIcon, descriptionKey: 'agents.description.antigravityCli' },
   {
     id: 'workbuddy',
     name: 'WorkBuddy',
@@ -1218,6 +1223,8 @@ export function AgentsPage({ embedded = false, onConfigurationApplied }: AgentsP
   const modificationDescription = activeStatus?.modificationState === 'invalid'
     ? t('agents.modify.invalid')
     : nativeOauth ? t('agents.nativeOAuth.activeHint')
+    : selected === 'antigravity-ide' ? t('agents.modify.antigravityIdeHint')
+    : selected === 'antigravity-cli' ? t('agents.modify.antigravityCliHint')
     : selected === 'workbuddy'
       ? t('agents.modify.workbuddyHint')
     : selected === 'zcode'
@@ -1741,7 +1748,7 @@ export function AgentsPage({ embedded = false, onConfigurationApplied }: AgentsP
   };
 
   const restartDesktopApp = async () => {
-    if (!['codex', 'opencode', 'claude-desktop', 'zcode', 'workbuddy'].includes(selected)) return;
+    if (!['codex', 'opencode', 'claude-desktop', 'zcode', 'workbuddy', 'antigravity-ide'].includes(selected)) return;
     setBusyAction('restart-app');
     setLaunchError('');
     try {
@@ -2436,7 +2443,7 @@ export function AgentsPage({ embedded = false, onConfigurationApplied }: AgentsP
           <MessageNotice tone="success" message={!configurationErrorMessage ? configurationNotice || clearNotice : null}
             onDismiss={() => { setConfigurationNotice(''); setClearNotice(''); }} />
           {activeSubpage === 'core' ? <AgentRunControls name={activeDefinition.name} dualTargets={hasIndependentCliAndApp}
-            desktop={hasIndependentCliAndApp || selected === 'claude-desktop' || selected === 'zcode' || selected === 'workbuddy'}
+            desktop={hasIndependentCliAndApp || selected === 'claude-desktop' || selected === 'zcode' || selected === 'workbuddy' || selected === 'antigravity-ide'}
             targets={activeLaunchTargets} enabled={launchEnabled} busyAction={busyAction}
             harness={isDeepSeekHarnessClient ? deepSeekHarnessProcessStatus : null}
             onLaunch={(target) => void launchAgent(target)} onRestart={() => void restartDesktopApp()}