From 036fc58ecb1a52e55408fd91e2fefa200f994b48 Mon Sep 17 00:00:00 2001
From: Brennan Benson <79079362+brennanb2025@users.noreply.github.com>
Date: Mon, 19 Oct 2026 20:39:10 -0700
Subject: [PATCH] fix(native-chat): link Antigravity sign-in instructions to
 settings (#30970)

* fix(native-chat): link Antigravity sign-in notices to settings

* test(native-chat): use typed failure sentences in settings link coverage

* fix(native-chat): put Antigravity settings link in sign-in sentence
---
 .../native-chat/NativeChatComposerNotices.tsx |  2 +-
 .../native-chat/NativeChatNoticeRow.test.tsx  | 60 +++++++++++++++++++
 .../native-chat/NativeChatNoticeRow.tsx       |  6 +-
 .../native-chat-antigravity-settings.tsx      | 40 +++++++++++++
 .../native-chat-composer-notice.ts            |  2 +
 .../native-chat-structured-session-notices.ts | 13 ++--
 .../use-native-chat-availability-notice.ts    |  2 +
 .../src/i18n/en-runtime-required.json         |  2 +-
 src/renderer/src/i18n/locales/en.json         |  5 +-
 src/renderer/src/i18n/locales/es.json         |  5 +-
 src/renderer/src/i18n/locales/fr.json         |  5 +-
 src/renderer/src/i18n/locales/ja.json         |  5 +-
 src/renderer/src/i18n/locales/ko.json         |  5 +-
 src/renderer/src/i18n/locales/zh.json         |  5 +-
 .../agent-session-availability-sentences.ts   |  3 +-
 src/shared/agent-session-failure-copy.ts      |  2 +-
 16 files changed, 147 insertions(+), 15 deletions(-)
 create mode 100644 src/renderer/src/components/native-chat/native-chat-antigravity-settings.tsx

diff --git a/src/renderer/src/components/native-chat/NativeChatComposerNotices.tsx b/src/renderer/src/components/native-chat/NativeChatComposerNotices.tsx
index 218aea46f85..6cb4bbbd286 100644
--- a/src/renderer/src/components/native-chat/NativeChatComposerNotices.tsx
+++ b/src/renderer/src/components/native-chat/NativeChatComposerNotices.tsx
@@ -86,7 +86,7 @@ function NoticeRow({ notice }: { notice: NativeChatComposerNotice }): React.JSX.
             isHostWarning && 'text-destructive'
           )}
         >
-          {notice.text}
+          {notice.content ?? notice.text}
         </p>
         {notice.action ? (
           <Button
diff --git a/src/renderer/src/components/native-chat/NativeChatNoticeRow.test.tsx b/src/renderer/src/components/native-chat/NativeChatNoticeRow.test.tsx
index dc393e68429..c9c1febddb3 100644
--- a/src/renderer/src/components/native-chat/NativeChatNoticeRow.test.tsx
+++ b/src/renderer/src/components/native-chat/NativeChatNoticeRow.test.tsx
@@ -8,6 +8,7 @@ import type { AgentJournalStatusItem } from '../../../../shared/agent-session-jo
 import { TooltipProvider } from '@/components/ui/tooltip'
 import { MessageRow } from './NativeChatMessageRow'
 import { NativeChatNoticeRow } from './NativeChatNoticeRow'
+import { useAppStore } from '@/store'
 import { i18n } from '@/i18n/i18n'
 import { agentSessionFailureWords } from '../../../../shared/agent-session-failure-words'
 import { agentSessionFailureFact } from '../../../../shared/agent-session-failure'
@@ -541,3 +542,62 @@ describe('Codex installation in notice rows', () => {
     }
   )
 })
+
+it('opens Antigravity accounts from its signed-out notice, and offers no link for other failures', () => {
+  const original = useAppStore.getState()
+  const openSettingsPage = vi.fn()
+  const openSettingsTarget = vi.fn()
+  useAppStore.setState({ openSettingsPage, openSettingsTarget })
+  try {
+    renderStatus(
+      {
+        kind: 'status',
+        tone: 'error',
+        ...agentSessionFailureWords(
+          { kind: 'notSignedIn' },
+          { agentName: 'Antigravity', surface: 'row' }
+        )
+      },
+      null,
+      false,
+      false,
+      'Antigravity'
+    )
+    const link = screen.getByRole('link', { name: 'Settings → Accounts → Antigravity' })
+    expect(link.parentElement).toHaveTextContent(
+      "Antigravity isn't signed in. Sign in under Settings → Accounts → Antigravity. Then send your message again."
+    )
+    expect(screen.queryByRole('button')).toBeNull()
+    fireEvent.click(link)
+    expect(openSettingsTarget).toHaveBeenCalledExactlyOnceWith({
+      pane: 'accounts',
+      repoId: null,
+      sectionId: 'accounts-antigravity'
+    })
+    expect(openSettingsPage).toHaveBeenCalledOnce()
+    cleanup()
+    for (const [agentName, kind] of [
+      ['Antigravity', 'startFailed'],
+      ['Claude', 'notSignedIn']
+    ] as const) {
+      renderStatus(
+        {
+          kind: 'status',
+          tone: 'error',
+          ...agentSessionFailureWords({ kind }, { agentName, surface: 'row' })
+        },
+        null,
+        false,
+        false,
+        agentName
+      )
+      expect(screen.queryByRole('link')).toBeNull()
+      cleanup()
+    }
+  } finally {
+    useAppStore.setState({
+      openSettingsPage: original.openSettingsPage,
+      openSettingsTarget: original.openSettingsTarget
+    })
+  }
+})
diff --git a/src/renderer/src/components/native-chat/NativeChatNoticeRow.tsx b/src/renderer/src/components/native-chat/NativeChatNoticeRow.tsx
index 015cdb6dc23..7cd900bdffc 100644
--- a/src/renderer/src/components/native-chat/NativeChatNoticeRow.tsx
+++ b/src/renderer/src/components/native-chat/NativeChatNoticeRow.tsx
@@ -28,6 +28,7 @@ import {
 import { readWholeAgentSessionFailureFact } from '../../../../shared/agent-session-failure'
 import { agentSessionFailureSentence } from '../../../../shared/agent-session-failure-words'
 import { sayAgentSessionFailureTranslated } from './agent-session-failure-words-text'
+import { nativeChatAntigravitySignInContent } from './native-chat-antigravity-settings'
 import { formatUsageLimitResetClock } from '../../../../shared/agent-session-usage-limit'
 
 const HOST_STATUS_WORDS: Record<AgentSessionHostStatusPresentation, () => string> = {
@@ -134,6 +135,7 @@ export function NativeChatNoticeRow({
   const continueOffered =
     orcaStop?.turnItemId !== undefined && orcaStop.turnItemId === orcaStopView.offeredTurnItemId
   const failure = readWholeAgentSessionFailureFact(block.failure)
+  const antigravitySignInContent = nativeChatAntigravitySignInContent(failure?.kind, agentName)
   const usageLimitContinue =
     block.usageLimitTurnItemId !== undefined &&
     block.usageLimitTurnItemId === orcaStopView.usageLimitTurnItemId
@@ -190,7 +192,9 @@ export function NativeChatNoticeRow({
     >
       <div className="flex items-start gap-2">
         {Icon ? <Icon aria-hidden="true" className="mt-0.5 size-4 shrink-0" /> : null}
-        <p className="min-w-0 flex-1 whitespace-pre-wrap break-words">{text}</p>
+        <p className="min-w-0 flex-1 whitespace-pre-wrap break-words">
+          {antigravitySignInContent ?? text}
+        </p>
         {continueOffered ? (
           <NativeChatInterruptedContinueButton onContinue={orcaStopView.continueNow} />
         ) : usageLimitContinue ? (
diff --git a/src/renderer/src/components/native-chat/native-chat-antigravity-settings.tsx b/src/renderer/src/components/native-chat/native-chat-antigravity-settings.tsx
new file mode 100644
index 00000000000..5d4627e3e7b
--- /dev/null
+++ b/src/renderer/src/components/native-chat/native-chat-antigravity-settings.tsx
@@ -0,0 +1,40 @@
+import { Trans } from 'react-i18next'
+import { i18n, translate } from '@/i18n/i18n'
+import { useAppStore } from '@/store'
+import { agentSessionSignInFor } from '../../../../shared/agent-session-sign-in'
+
+export function nativeChatAntigravitySignInContent(
+  failureKind: string | undefined,
+  agentName: string | undefined
+): React.JSX.Element | undefined {
+  if (failureKind !== 'notSignedIn' || agentSessionSignInFor(agentName)?.agent !== 'antigravity') {
+    return undefined
+  }
+  return (
+    <Trans
+      i18n={i18n}
+      defaults={translate(
+        'components.native-chat.antigravitySignIn.sentence',
+        "Antigravity isn't signed in. Sign in under <settings>Settings → Accounts → Antigravity</settings>. Then send your message again."
+      )}
+      components={{
+        settings: (
+          <a
+            href="#accounts-antigravity"
+            className="text-chat-foreground underline underline-offset-2 hover:text-chat-foreground-strong focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
+            onClick={(event) => {
+              event.preventDefault()
+              const { openSettingsTarget, openSettingsPage } = useAppStore.getState()
+              openSettingsTarget({
+                pane: 'accounts',
+                repoId: null,
+                sectionId: 'accounts-antigravity'
+              })
+              openSettingsPage()
+            }}
+          />
+        )
+      }}
+    />
+  )
+}
diff --git a/src/renderer/src/components/native-chat/native-chat-composer-notice.ts b/src/renderer/src/components/native-chat/native-chat-composer-notice.ts
index 9d071b51cc0..629328f3320 100644
--- a/src/renderer/src/components/native-chat/native-chat-composer-notice.ts
+++ b/src/renderer/src/components/native-chat/native-chat-composer-notice.ts
@@ -7,6 +7,8 @@ import { isClipboardTextTooLargeError } from '../../../../shared/clipboard-text'
 
 export type NativeChatComposerNoticeContent = {
   text: string
+  /** Inline presentation of the sentence when it contains navigation. */
+  content?: React.ReactNode
   /** Text from outside Orca (a host or system error), shown apart and copyable. */
   errorText?: string
 }
diff --git a/src/renderer/src/components/native-chat/native-chat-structured-session-notices.ts b/src/renderer/src/components/native-chat/native-chat-structured-session-notices.ts
index f890dc5bdfa..1e64ebded26 100644
--- a/src/renderer/src/components/native-chat/native-chat-structured-session-notices.ts
+++ b/src/renderer/src/components/native-chat/native-chat-structured-session-notices.ts
@@ -1,3 +1,4 @@
+import { nativeChatAntigravitySignInContent } from './native-chat-antigravity-settings'
 import { translate } from '@/i18n/i18n'
 import type { StructuredAgentSessionLaunchLifecycle } from '@/lib/structured-agent-session-launch'
 import { agentSessionRefusalCauseParts } from '../../../../shared/agent-session-refusal-notice'
@@ -53,7 +54,9 @@ function nativeChatLaunchNotice({
   // An argument problem already says the start failed; the generic lead would repeat it.
   const saysStartFailure =
     failure?.code === 'agent_session_operation_invalid' && failure.details?.argumentProblem
+  const signInContent = nativeChatAntigravitySignInContent(failure?.details?.reason, agentLabel)
   return {
+    content: signInContent,
     key: 'launch',
     kind: 'error',
     text: cause ? (saysStartFailure ? cause : joinSentences([message, cause])) : message,
@@ -64,10 +67,12 @@ function nativeChatLaunchNotice({
             onClick: claudeSignIn.signIn,
             disabled: claudeSignIn.signingIn
           }
-        : {
-            label: translate('auto.components.native.chat.NativeChatLaunchRetry.retry', 'Retry'),
-            onClick: onRetry
-          }
+        : signInContent
+          ? undefined
+          : {
+              label: translate('auto.components.native.chat.NativeChatLaunchRetry.retry', 'Retry'),
+              onClick: onRetry
+            }
   }
 }
 
diff --git a/src/renderer/src/components/native-chat/use-native-chat-availability-notice.ts b/src/renderer/src/components/native-chat/use-native-chat-availability-notice.ts
index 18b4dad4233..900872b0c21 100644
--- a/src/renderer/src/components/native-chat/use-native-chat-availability-notice.ts
+++ b/src/renderer/src/components/native-chat/use-native-chat-availability-notice.ts
@@ -13,6 +13,7 @@ import type { AgentSessionWriteRefusal } from '../../../../shared/agent-session-
 import { isStructuredAgentSessionStartFailureRow } from '../../../../shared/structured-agent-session-start-failure-row-key'
 import { sayAgentSessionFailureTranslated } from './agent-session-failure-words-text'
 import { notSignedInSentence } from '../../../../shared/agent-session-availability-sentences'
+import { nativeChatAntigravitySignInContent } from './native-chat-antigravity-settings'
 import type { NativeChatComposerNotice } from './native-chat-composer-notice'
 
 /** Why the chat's latest start failed, unless a turn has run since. */
@@ -109,6 +110,7 @@ export function useNativeChatAvailabilityNotice(input: {
             { kind: 'notSignedIn', account: unavailable.account },
             sayAgentSessionFailureTranslated
           ),
+    content: nativeChatAntigravitySignInContent(unavailable.reason, input.agent),
     onDismiss: () => setDismissal({ key, dismissed: true })
   }
 }
diff --git a/src/renderer/src/i18n/en-runtime-required.json b/src/renderer/src/i18n/en-runtime-required.json
index 9fbfcbe487c..82d22e91e05 100644
--- a/src/renderer/src/i18n/en-runtime-required.json
+++ b/src/renderer/src/i18n/en-runtime-required.json
@@ -2892,7 +2892,7 @@
         "agentCommandNotSignedIn": "Sign in to {{agent}} with `{{loginCommand}}` on the computer running this chat.",
         "agentNotSignedIn": "Sign in to {{agent}}.",
         "answerUnconfirmed": "Your answer was recorded but the agent did not confirm it.",
-        "antigravityNotSignedIn": "Antigravity isn't signed in. Sign in under Settings → Accounts → Antigravity.",
+        "antigravityNotSignedIn": "Antigravity isn't signed in. Sign in under Settings → Accounts → Antigravity. Then send your message again.",
         "argumentsMissingValue": "Saved Arguments need a value for {{option}}.",
         "argumentsMultipleValues": "Saved Arguments give {{option}} more than one value.",
         "argumentsPositionalPrompt": "Saved Arguments include a prompt.",
diff --git a/src/renderer/src/i18n/locales/en.json b/src/renderer/src/i18n/locales/en.json
index d735840f6df..b202f6268c9 100644
--- a/src/renderer/src/i18n/locales/en.json
+++ b/src/renderer/src/i18n/locales/en.json
@@ -18360,7 +18360,7 @@
         "claudeManagedNotSignedIn": "This Claude account isn't signed in. Sign in again in Claude Accounts settings.",
         "codexSystemNotSignedIn": "Codex isn't signed in. Run `{{loginCommand}}`.",
         "codexManagedNotSignedIn": "This Codex account isn't signed in. Sign in again in Codex Accounts settings.",
-        "antigravityNotSignedIn": "Antigravity isn't signed in. Sign in under Settings → Accounts → Antigravity.",
+        "antigravityNotSignedIn": "Antigravity isn't signed in. Sign in under Settings → Accounts → Antigravity. Then send your message again.",
         "cliMissing": "{{agent}} wasn't found on the computer running this chat. Install it, or check its Command in Settings → Agents.",
         "signInFirst": "Sign in first.",
         "signInThenRunCommand": "Sign in, then run /{{command}} again.",
@@ -19082,6 +19082,9 @@
         "unconfirmed": "Couldn't confirm whether {{agent}} received Continue. Check the chat before trying again.",
         "usageLimitExplanation": "Asks the agent to continue where it left off. Use it once the limit resets."
       },
+      "antigravitySignIn": {
+        "sentence": "Antigravity isn't signed in. Sign in under <settings>Settings → Accounts → Antigravity</settings>. Then send your message again."
+      },
       "claudeSignIn": {
         "signingIn": "Signing in…"
       },
diff --git a/src/renderer/src/i18n/locales/es.json b/src/renderer/src/i18n/locales/es.json
index e57e14b9d16..344ac84311f 100644
--- a/src/renderer/src/i18n/locales/es.json
+++ b/src/renderer/src/i18n/locales/es.json
@@ -18046,7 +18046,7 @@
         "claudeManagedNotSignedIn": "Esta cuenta de Claude no ha iniciado sesión. Vuelve a iniciar sesión en la configuración de Cuentas de Claude.",
         "codexSystemNotSignedIn": "Codex no ha iniciado sesión. Ejecuta `{{loginCommand}}`.",
         "codexManagedNotSignedIn": "Esta cuenta de Codex no ha iniciado sesión. Vuelve a iniciar sesión en la configuración de Cuentas de Codex.",
-        "antigravityNotSignedIn": "Antigravity no ha iniciado sesión. Inicia sesión en Ajustes → Cuentas → Antigravity.",
+        "antigravityNotSignedIn": "Antigravity no ha iniciado sesión. Inicia sesión en Ajustes → Cuentas → Antigravity. Después, vuelve a enviar tu mensaje.",
         "cliMissing": "No se encontró {{agent}} en el equipo que ejecuta este chat. Instálelo o revise su Comando en Ajustes → Agentes.",
         "signInFirst": "Inicie sesión primero.",
         "signInThenRunCommand": "Inicie sesión y vuelva a ejecutar /{{command}}.",
@@ -18764,6 +18764,9 @@
         "replaceDescription": "Reanudar “{{title}}” aquí detendrá lo que {{agent}} está haciendo en este chat.",
         "replace": "Reemplazar"
       },
+      "antigravitySignIn": {
+        "sentence": "Antigravity no ha iniciado sesión. Inicia sesión en <settings>Ajustes → Cuentas → Antigravity</settings>. Después, vuelve a enviar tu mensaje."
+      },
       "claudeSignIn": {
         "signingIn": "Iniciando sesión…"
       }
diff --git a/src/renderer/src/i18n/locales/fr.json b/src/renderer/src/i18n/locales/fr.json
index 7571c2be53b..24ae72f43d1 100644
--- a/src/renderer/src/i18n/locales/fr.json
+++ b/src/renderer/src/i18n/locales/fr.json
@@ -18155,7 +18155,7 @@
         "claudeManagedNotSignedIn": "Ce compte Claude n’est pas connecté. Reconnectez-vous dans les paramètres des Comptes Claude.",
         "codexSystemNotSignedIn": "Codex n’est pas connecté. Exécutez `{{loginCommand}}`.",
         "codexManagedNotSignedIn": "Ce compte Codex n’est pas connecté. Reconnectez-vous dans les paramètres des Comptes Codex.",
-        "antigravityNotSignedIn": "Antigravity n’est pas connecté. Connectez-vous dans Paramètres → Comptes → Antigravity.",
+        "antigravityNotSignedIn": "Antigravity n’est pas connecté. Connectez-vous dans Paramètres → Comptes → Antigravity. Puis renvoyez votre message.",
         "cliMissing": "{{agent}} est introuvable sur l’ordinateur qui exécute cette conversation. Installez-le ou vérifiez sa Commande dans Paramètres → Agents.",
         "signInFirst": "Connectez-vous d'abord.",
         "signInThenRunCommand": "Connectez-vous, puis relancez /{{command}}.",
@@ -18873,6 +18873,9 @@
         "replaceDescription": "Reprendre « {{title}} » ici arrêtera ce que {{agent}} fait dans ce chat.",
         "replace": "Remplacer"
       },
+      "antigravitySignIn": {
+        "sentence": "Antigravity n’est pas connecté. Connectez-vous dans <settings>Paramètres → Comptes → Antigravity</settings>. Puis renvoyez votre message."
+      },
       "claudeSignIn": {
         "signingIn": "Connexion…"
       }
diff --git a/src/renderer/src/i18n/locales/ja.json b/src/renderer/src/i18n/locales/ja.json
index 4c88d1d2594..55fe8525cfa 100644
--- a/src/renderer/src/i18n/locales/ja.json
+++ b/src/renderer/src/i18n/locales/ja.json
@@ -18086,7 +18086,7 @@
         "claudeManagedNotSignedIn": "この Claude アカウントにサインインしていません。設定の Claude アカウントで再度サインインしてください。",
         "codexSystemNotSignedIn": "Codex にサインインしていません。`{{loginCommand}}` を実行してください。",
         "codexManagedNotSignedIn": "この Codex アカウントにサインインしていません。設定の Codex アカウントで再度サインインしてください。",
-        "antigravityNotSignedIn": "Antigravity にサインインしていません。[設定] → [アカウント] → [Antigravity] でサインインしてください。",
+        "antigravityNotSignedIn": "Antigravity にサインインしていません。設定 → アカウント → Antigravityでサインインしてから、メッセージをもう一度送信してください。",
         "cliMissing": "このチャットを実行しているコンピューターで {{agent}} が見つかりませんでした。インストールするか、[設定] → [Agent] の [コマンド] を確認してください。",
         "signInFirst": "先にサインインしてください。",
         "signInThenRunCommand": "サインインしてから、/{{command}} をもう一度実行してください。",
@@ -18804,6 +18804,9 @@
         "replaceDescription": "ここで「{{title}}」を再開すると、このチャットで {{agent}} が行っている処理が停止します。",
         "replace": "置き換える"
       },
+      "antigravitySignIn": {
+        "sentence": "Antigravity にサインインしていません。<settings>設定 → アカウント → Antigravity</settings>でサインインしてから、メッセージをもう一度送信してください。"
+      },
       "claudeSignIn": {
         "signingIn": "サインイン中…"
       }
diff --git a/src/renderer/src/i18n/locales/ko.json b/src/renderer/src/i18n/locales/ko.json
index 6bcc6bddc12..ba0b80f53d8 100644
--- a/src/renderer/src/i18n/locales/ko.json
+++ b/src/renderer/src/i18n/locales/ko.json
@@ -18086,7 +18086,7 @@
         "claudeManagedNotSignedIn": "이 Claude 계정에 로그인하지 않았습니다. Claude 계정 설정에서 다시 로그인하세요.",
         "codexSystemNotSignedIn": "Codex에 로그인하지 않았습니다. `{{loginCommand}}`을 실행하세요.",
         "codexManagedNotSignedIn": "이 Codex 계정에 로그인하지 않았습니다. Codex 계정 설정에서 다시 로그인하세요.",
-        "antigravityNotSignedIn": "Antigravity에 로그인되어 있지 않습니다. 설정 → 계정 → Antigravity에서 로그인하세요.",
+        "antigravityNotSignedIn": "Antigravity에 로그인되어 있지 않습니다. 설정 → 계정 → Antigravity에서 로그인한 후 메시지를 다시 보내세요.",
         "cliMissing": "이 채팅을 실행하는 컴퓨터에서 {{agent}}를 찾을 수 없습니다. 설치하거나 설정 → 에이전트에서 명령을 확인하세요.",
         "signInFirst": "먼저 로그인하세요.",
         "signInThenRunCommand": "로그인한 다음 /{{command}}을(를) 다시 실행하세요.",
@@ -18804,6 +18804,9 @@
         "replaceDescription": "여기서 “{{title}}”을(를) 재개하면 이 채팅에서 {{agent}}이(가) 하고 있는 작업이 중지됩니다.",
         "replace": "바꾸기"
       },
+      "antigravitySignIn": {
+        "sentence": "Antigravity에 로그인되어 있지 않습니다. <settings>설정 → 계정 → Antigravity</settings>에서 로그인한 후 메시지를 다시 보내세요."
+      },
       "claudeSignIn": {
         "signingIn": "로그인 중…"
       }
diff --git a/src/renderer/src/i18n/locales/zh.json b/src/renderer/src/i18n/locales/zh.json
index aa269aa3e3b..20db9b0e913 100644
--- a/src/renderer/src/i18n/locales/zh.json
+++ b/src/renderer/src/i18n/locales/zh.json
@@ -18051,7 +18051,7 @@
         "claudeManagedNotSignedIn": "此 Claude 账户尚未登录。请在 Claude 账户设置中重新登录。",
         "codexSystemNotSignedIn": "Codex 尚未登录。请运行 `{{loginCommand}}`。",
         "codexManagedNotSignedIn": "此 Codex 账户尚未登录。请在 Codex 账户设置中重新登录。",
-        "antigravityNotSignedIn": "Antigravity 尚未登录。请在设置 → 账户 → Antigravity 中登录。",
+        "antigravityNotSignedIn": "尚未登录 Antigravity。请在设置 → 账户 → Antigravity中登录，然后重新发送消息。",
         "cliMissing": "在运行此聊天的计算机上找不到 {{agent}}。请安装它，或检查设置 → 智能体中的命令。",
         "signInFirst": "请先登录。",
         "signInThenRunCommand": "请登录，然后重新运行 /{{command}}。",
@@ -18769,6 +18769,9 @@
         "replaceDescription": "在此恢复“{{title}}”将停止 {{agent}} 在此聊天中正在进行的工作。",
         "replace": "替换"
       },
+      "antigravitySignIn": {
+        "sentence": "尚未登录 Antigravity。请在<settings>设置 → 账户 → Antigravity</settings>中登录，然后重新发送消息。"
+      },
       "claudeSignIn": {
         "signingIn": "正在登录…"
       }
diff --git a/src/shared/agent-session-availability-sentences.ts b/src/shared/agent-session-availability-sentences.ts
index ccf0b409a0d..a6fe60ef8ec 100644
--- a/src/shared/agent-session-availability-sentences.ts
+++ b/src/shared/agent-session-availability-sentences.ts
@@ -35,7 +35,8 @@ export function notSignedInSentence(
       : surface === 'rejection' &&
           context.messageSubmitted !== false &&
           signIn?.agent !== 'claude' &&
-          signIn?.agent !== 'codex'
+          signIn?.agent !== 'codex' &&
+          signIn?.agent !== 'antigravity'
         ? say(signIn ? 'thenSendAgain' : 'signInThenSend')
         : undefined
   const detail = fact.detail?.audience === 'person' ? fact.detail.text : undefined
diff --git a/src/shared/agent-session-failure-copy.ts b/src/shared/agent-session-failure-copy.ts
index 0e407e61663..26797b1b391 100644
--- a/src/shared/agent-session-failure-copy.ts
+++ b/src/shared/agent-session-failure-copy.ts
@@ -47,7 +47,7 @@ export const AGENT_SESSION_FAILURE_COPY = {
   codexManagedNotSignedIn:
     "This Codex account isn't signed in. Sign in again in Codex Accounts settings.",
   antigravityNotSignedIn:
-    "Antigravity isn't signed in. Sign in under Settings → Accounts → Antigravity.",
+    "Antigravity isn't signed in. Sign in under Settings → Accounts → Antigravity. Then send your message again.",
   agentCommandNotSignedIn:
     'Sign in to {{agent}} with `{{loginCommand}}` on the computer running this chat.',
   interactiveAgentNotSignedIn: