fix(auth): update terminology to 'sign in' and 'sign out'

README.md

@@ -147,7 +147,7 @@ Integrate Gemini CLI directly into your GitHub workflows with
 
 Choose the authentication method that best fits your needs:
 
-### Option 1: Login with Google (OAuth login using your Google Account)
+### Option 1: Sign in with Google (OAuth login using your Google Account)
 
 **✨ Best for:** Individual developers as well as anyone who has a Gemini Code
 Assist License. (see
@@ -161,7 +161,7 @@ for details)
 - **No API key management** - just sign in with your Google account
 - **Automatic updates** to latest models
 
-#### Start Gemini CLI, then choose _Login with Google_ and follow the browser authentication flow when prompted
+#### Start Gemini CLI, then choose _Sign in with Google_ and follow the browser authentication flow when prompted
 
 ```bash
 gemini

docs/cli/settings.md

@@ -66,7 +66,7 @@ they appear in the UI.
 | Show Line Numbers                    | `ui.showLineNumbers`                   | Show line numbers in the chat.                                                                                                                                    | `true`   |
 | Show Citations                       | `ui.showCitations`                     | Show citations for generated text in the chat.                                                                                                                    | `false`  |
 | Show Model Info In Chat              | `ui.showModelInfoInChat`               | Show the model name in the chat for each model turn.                                                                                                              | `false`  |
-| Show User Identity                   | `ui.showUserIdentity`                  | Show the logged-in user's identity (e.g. email) in the UI.                                                                                                        | `true`   |
+| Show User Identity                   | `ui.showUserIdentity`                  | Show the signed-in user's identity (e.g. email) in the UI.                                                                                                        | `true`   |
 | Use Alternate Screen Buffer          | `ui.useAlternateBuffer`                | Use an alternate screen buffer for the UI, preserving shell history.                                                                                              | `false`  |
 | Use Background Color                 | `ui.useBackgroundColor`                | Whether to use background colors in the UI.                                                                                                                       | `true`   |
 | Incremental Rendering                | `ui.incrementalRendering`              | Enable incremental rendering for the UI. This option will reduce flickering but may cause rendering artifacts. Only supported when useAlternateBuffer is enabled. | `true`   |

docs/core/subagents.md

@@ -194,7 +194,7 @@ returns coordinates and element descriptions that the browser agent uses with
 the `click_at` tool for precise, coordinate-based interactions.
 
 > **Note:** The visual agent requires API key or Vertex AI authentication. It is
-> not available when using Google Login.
+> not available when using "Sign in with Google".
 
 ## Creating custom subagents
 

docs/get-started/authentication.md

@@ -17,8 +17,8 @@ Select the authentication method that matches your situation in the table below:
 
 | User Type / Scenario                                                   | Recommended Authentication Method                                | Google Cloud Project Required                               |
 | :--------------------------------------------------------------------- | :--------------------------------------------------------------- | :---------------------------------------------------------- |
-| Individual Google accounts                                             | [Login with Google](#login-google)                               | No, with exceptions                                         |
-| Organization users with a company, school, or Google Workspace account | [Login with Google](#login-google)                               | [Yes](#set-gcp)                                             |
+| Individual Google accounts                                             | [Sign in with Google](#login-google)                             | No, with exceptions                                         |
+| Organization users with a company, school, or Google Workspace account | [Sign in with Google](#login-google)                             | [Yes](#set-gcp)                                             |
 | AI Studio user with a Gemini API key                                   | [Use Gemini API Key](#gemini-api)                                | No                                                          |
 | Google Cloud Vertex AI user                                            | [Vertex AI](#vertex-ai)                                          | [Yes](#set-gcp)                                             |
 | [Headless mode](#headless)                                             | [Use Gemini API Key](#gemini-api) or<br> [Vertex AI](#vertex-ai) | No (for Gemini API Key)<br> [Yes](#set-gcp) (for Vertex AI) |
@@ -36,7 +36,7 @@ Select the authentication method that matches your situation in the table below:
   [Google AI Ultra for Business](https://support.google.com/a/answer/16345165)
   subscriptions.
 
-## (Recommended) Login with Google <a id="login-google"></a>
+## (Recommended) Sign in with Google <a id="login-google"></a>
 
 If you run Gemini CLI on your local machine, the simplest authentication method
 is logging in with your Google account. This method requires a web browser on a
@@ -54,9 +54,9 @@ To authenticate and use Gemini CLI:
    gemini
    ```
 
-2. Select **Login with Google**. Gemini CLI opens a login prompt using your web
-   browser. Follow the on-screen instructions. Your credentials will be cached
-   locally for future sessions.
+2. Select **Sign in with Google**. Gemini CLI opens a sign in prompt using your
+   web browser. Follow the on-screen instructions. Your credentials will be
+   cached locally for future sessions.
 
 ### Do I need to set my Google Cloud project?
 
@@ -391,7 +391,7 @@ on this page.
 [Headless mode](../cli/headless) will use your existing authentication method,
 if an existing authentication credential is cached.
 
-If you have not already logged in with an authentication credential, you must
+If you have not already signed in with an authentication credential, you must
 configure authentication using environment variables:
 
 - [Use Gemini API Key](#gemini-api)

docs/get-started/index.md

@@ -38,7 +38,7 @@ cases, you can log in with your existing Google account:
    ```
 
 2. When asked "How would you like to authenticate for this project?" select **1.
-   Login with Google**.
+   Sign in with Google**.
 
 3. Select your Google account.
 

docs/reference/configuration.md

@@ -297,7 +297,7 @@ their corresponding top-level category object in your `settings.json` file.
   - **Default:** `false`
 
 - **`ui.showUserIdentity`** (boolean):
-  - **Description:** Show the logged-in user's identity (e.g. email) in the UI.
+  - **Description:** Show the signed-in user's identity (e.g. email) in the UI.
   - **Default:** `true`
 
 - **`ui.useAlternateBuffer`** (boolean):

docs/release-confidence.md

@@ -79,8 +79,8 @@ manually run through this checklist.
   - [ ] Verify version: `gemini --version`
 
 - **Authentication:**
-  - [ ] In interactive mode run `/auth` and verify all login flows work:
-    - [ ] Login With Google
+  - [ ] In interactive mode run `/auth` and verify all sign in flows work:
+    - [ ] Sign in with Google
     - [ ] API Key
     - [ ] Vertex AI
 

docs/resources/tos-privacy.md

@@ -46,7 +46,7 @@ for further information.
 | Gemini Developer API Key | Gemini API - Paid Services   | [Gemini API Terms of Service - Paid Services](https://ai.google.dev/gemini-api/terms#paid-services)     | [Google Privacy Policy](https://policies.google.com/privacy)                                  |
 | Vertex AI GenAI API Key  | Vertex AI GenAI API          | [Google Cloud Platform Terms of Service](https://cloud.google.com/terms/service-terms/)                 | [Google Cloud Privacy Notice](https://cloud.google.com/terms/cloud-privacy-notice)            |
 
-## 1. If you have logged in with your Google account to Gemini Code Assist
+## 1. If you have signed in with your Google account to Gemini Code Assist
 
 For users who use their Google account to access
 [Gemini Code Assist](https://codeassist.google), these Terms of Service and
@@ -68,7 +68,7 @@ Code Assist Standard or Enterprise edition, the terms and privacy policy of
 Gemini Code Assist Standard or Enterprise edition will apply to all your use of
 Gemini Code Assist._
 
-## 2. If you have logged in with a Gemini API key to the Gemini Developer API
+## 2. If you have signed in with a Gemini API key to the Gemini Developer API
 
 If you are using a Gemini API key for authentication with the
 [Gemini Developer API](https://ai.google.dev/gemini-api/docs), these Terms of
@@ -84,7 +84,7 @@ Service and Privacy Notice documents apply:
 - Privacy Notice: The collection and use of your data is described in the
   [Google Privacy Policy](https://policies.google.com/privacy).
 
-## 3. If you have logged in with a Gemini API key to the Vertex AI GenAI API
+## 3. If you have signed in with a Gemini API key to the Vertex AI GenAI API
 
 If you are using a Gemini API key for authentication with a
 [Vertex AI GenAI API](https://cloud.google.com/vertex-ai/generative-ai/docs/reference/rest)

docs/resources/troubleshooting.md

@@ -29,13 +29,13 @@ topics on:
       added to your organization's Gemini Code Assist subscription.
 
 - **Error:
-  `Failed to login. Message: Your current account is not eligible... because it is not currently available in your location.`**
+  `Failed to sign in. Message: Your current account is not eligible... because it is not currently available in your location.`**
   - **Cause:** Gemini CLI does not currently support your location. For a full
     list of supported locations, see the following pages:
     - Gemini Code Assist for individuals:
       [Available locations](https://developers.google.com/gemini-code-assist/resources/available-locations#americas)
 
-- **Error: `Failed to login. Message: Request contains an invalid argument`**
+- **Error: `Failed to sign in. Message: Request contains an invalid argument`**
   - **Cause:** Users with Google Workspace accounts or Google Cloud accounts
     associated with their Gmail accounts may not be able to activate the free
     tier of the Google Code Assist plan.

packages/cli/src/core/auth.test.ts

@@ -48,14 +48,14 @@ describe('auth', () => {
   });
 
   it('should return error message on failed auth', async () => {
-    const error = new Error('Auth failed');
+    const error = new Error('Authentication failed');
     vi.mocked(mockConfig.refreshAuth).mockRejectedValue(error);
     const result = await performInitialAuth(
       mockConfig,
       AuthType.LOGIN_WITH_GOOGLE,
     );
     expect(result).toEqual({
-      authError: 'Failed to login. Message: Auth failed',
+      authError: 'Failed to sign in. Message: Authentication failed',
       accountSuspensionInfo: null,
     });
     expect(mockConfig.refreshAuth).toHaveBeenCalledWith(

packages/cli/src/core/auth.ts

@@ -64,7 +64,7 @@ export async function performInitialAuth(
       };
     }
     return {
-      authError: `Failed to login. Message: ${getErrorMessage(e)}`,
+      authError: `Failed to sign in. Message: ${getErrorMessage(e)}`,
       accountSuspensionInfo: null,
     };
   }

packages/cli/src/ui/auth/AuthDialog.test.tsx

@@ -209,7 +209,7 @@ describe('AuthDialog', () => {
       {
         setup: () => {},
         expected: AuthType.LOGIN_WITH_GOOGLE,
-        desc: 'defaults to Login with Google',
+        desc: 'defaults to Sign in with Google',
       },
     ])('selects initial auth type $desc', async ({ setup, expected }) => {
       setup();
@@ -351,7 +351,7 @@ describe('AuthDialog', () => {
       unmount();
     });
 
-    it('exits process for Login with Google when browser is suppressed', async () => {
+    it('exits process for Sign in with Google when browser is suppressed', async () => {
       vi.useFakeTimers();
       const exitSpy = vi
         .spyOn(process, 'exit')

packages/cli/src/ui/auth/AuthDialog.tsx

@@ -44,7 +44,7 @@ export function AuthDialog({
   const [exiting, setExiting] = useState(false);
   let items = [
     {
-      label: 'Login with Google',
+      label: 'Sign in with Google',
       value: AuthType.LOGIN_WITH_GOOGLE,
       key: AuthType.LOGIN_WITH_GOOGLE,
     },

packages/cli/src/ui/auth/AuthInProgress.test.tsx

@@ -59,8 +59,8 @@ describe('AuthInProgress', () => {
       <AuthInProgress onTimeout={onTimeout} />,
     );
     await waitUntilReady();
-    expect(lastFrame()).toContain('[Spinner] Waiting for auth...');
-    expect(lastFrame()).toContain('Press ESC or CTRL+C to cancel');
+    expect(lastFrame()).toContain('[Spinner] Waiting for authentication...');
+    expect(lastFrame()).toContain('Press Esc or Ctrl+C to cancel');
     unmount();
   });
 

packages/cli/src/ui/auth/AuthInProgress.tsx

@@ -53,8 +53,8 @@ export function AuthInProgress({
       ) : (
         <Box>
           <Text>
-            <CliSpinner type="dots" /> Waiting for auth... (Press ESC or CTRL+C
-            to cancel)
+            <CliSpinner type="dots" /> Waiting for authentication... (Press Esc
+            or Ctrl+C to cancel)
           </Text>
         </Box>
       )}

packages/cli/src/ui/auth/LoginWithGoogleRestartDialog.tsx

@@ -45,13 +45,13 @@ export const LoginWithGoogleRestartDialog = ({
   );
 
   const message =
-    'You have successfully logged in with Google. Gemini CLI needs to be restarted.';
+    "You've successfully signed in with Google. Gemini CLI needs to be restarted.";
 
   return (
     <Box borderStyle="round" borderColor={theme.status.warning} paddingX={1}>
       <Text color={theme.status.warning}>
-        {message} Press &apos;r&apos; to restart, or &apos;escape&apos; to
-        choose a different auth method.
+        {message} Press R to restart, or Esc to choose a different
+        authentication method.
       </Text>
     </Box>
   );

packages/cli/src/ui/auth/__snapshots__/AuthDialog.test.tsx.snap

@@ -7,7 +7,7 @@ exports[`AuthDialog > Snapshots > renders correctly with auth error 1`] = `
 │                                                                                                  │
 │   How would you like to authenticate for this project?                                           │
 │                                                                                                  │
-│   (selected) Login with Google(not selected) Use Gemini API Key(not selected) Vertex AI          │
+│   (selected) Sign in with Google(not selected) Use Gemini API Key(not selected) Vertex AI        │
 │                                                                                                  │
 │   Something went wrong                                                                           │
 │                                                                                                  │
@@ -28,7 +28,7 @@ exports[`AuthDialog > Snapshots > renders correctly with default props 1`] = `
 │                                                                                                  │
 │   How would you like to authenticate for this project?                                           │
 │                                                                                                  │
-│   (selected) Login with Google(not selected) Use Gemini API Key(not selected) Vertex AI          │
+│   (selected) Sign in with Google(not selected) Use Gemini API Key(not selected) Vertex AI        │
 │                                                                                                  │
 │   (Use Enter to select)                                                                          │
 │                                                                                                  │

packages/cli/src/ui/auth/useAuth.test.tsx

@@ -288,7 +288,7 @@ describe('useAuth', () => {
       );
 
       await waitFor(() => {
-        expect(result.current.authError).toContain('Failed to login');
+        expect(result.current.authError).toContain('Failed to sign in');
         expect(result.current.authState).toBe(AuthState.Updating);
       });
     });

packages/cli/src/ui/auth/useAuth.ts

@@ -149,7 +149,7 @@ export const useAuthCommand = (
           // Show the error message directly without "Failed to login" prefix
           onAuthError(getErrorMessage(e));
         } else {
-          onAuthError(`Failed to login. Message: ${getErrorMessage(e)}`);
+          onAuthError(`Failed to sign in. Message: ${getErrorMessage(e)}`);
         }
       }
     })();

packages/cli/src/ui/commands/authCommand.test.ts

@@ -34,11 +34,13 @@ describe('authCommand', () => {
     vi.clearAllMocks();
   });
 
-  it('should have subcommands: login and logout', () => {
+  it('should have subcommands: signin and signout', () => {
     expect(authCommand.subCommands).toBeDefined();
     expect(authCommand.subCommands).toHaveLength(2);
-    expect(authCommand.subCommands?.[0]?.name).toBe('login');
-    expect(authCommand.subCommands?.[1]?.name).toBe('logout');
+    expect(authCommand.subCommands?.[0]?.name).toBe('signin');
+    expect(authCommand.subCommands?.[0]?.altNames).toContain('login');
+    expect(authCommand.subCommands?.[1]?.name).toBe('signout');
+    expect(authCommand.subCommands?.[1]?.altNames).toContain('logout');
   });
 
   it('should return a dialog action to open the auth dialog when called with no args', () => {
@@ -59,19 +61,19 @@ describe('authCommand', () => {
     expect(authCommand.description).toBe('Manage authentication');
   });
 
-  describe('auth login subcommand', () => {
+  describe('auth signin subcommand', () => {
     it('should return auth dialog action', () => {
       const loginCommand = authCommand.subCommands?.[0];
-      expect(loginCommand?.name).toBe('login');
+      expect(loginCommand?.name).toBe('signin');
       const result = loginCommand!.action!(mockContext, '');
       expect(result).toEqual({ type: 'dialog', dialog: 'auth' });
     });
   });
 
-  describe('auth logout subcommand', () => {
+  describe('auth signout subcommand', () => {
     it('should clear cached credentials', async () => {
       const logoutCommand = authCommand.subCommands?.[1];
-      expect(logoutCommand?.name).toBe('logout');
+      expect(logoutCommand?.name).toBe('signout');
 
       const { clearCachedCredentialFile } = await import(
         '@google/gemini-cli-core'

packages/cli/src/ui/commands/authCommand.ts

@@ -14,8 +14,9 @@ import { clearCachedCredentialFile } from '@google/gemini-cli-core';
 import { SettingScope } from '../../config/settings.js';
 
 const authLoginCommand: SlashCommand = {
-  name: 'login',
-  description: 'Login or change the auth method',
+  name: 'signin',
+  altNames: ['login'],
+  description: 'Sign in or change the authentication method',
   kind: CommandKind.BUILT_IN,
   autoExecute: true,
   action: (_context, _args): OpenDialogActionReturn => ({
@@ -25,8 +26,9 @@ const authLoginCommand: SlashCommand = {
 };
 
 const authLogoutCommand: SlashCommand = {
-  name: 'logout',
-  description: 'Log out and clear all cached credentials',
+  name: 'signout',
+  altNames: ['logout'],
+  description: 'Sign out and clear all cached credentials',
   kind: CommandKind.BUILT_IN,
   action: async (context, _args): Promise<LogoutActionReturn> => {
     await clearCachedCredentialFile();

packages/cli/src/ui/components/AboutBox.test.tsx

@@ -36,7 +36,7 @@ describe('AboutBox', () => {
     expect(output).toContain('gemini-pro');
     expect(output).toContain('default');
     expect(output).toContain('macOS');
-    expect(output).toContain('Logged in with Google');
+    expect(output).toContain('Signed in with Google');
     unmount();
   });
 
@@ -63,7 +63,7 @@ describe('AboutBox', () => {
     );
     await waitUntilReady();
     const output = lastFrame();
-    expect(output).toContain('Logged in with Google ([email protected])');
+    expect(output).toContain('Signed in with Google ([email protected])');
     unmount();
   });
 

packages/cli/src/ui/components/AboutBox.tsx

@@ -116,8 +116,8 @@ export const AboutBox: React.FC<AboutBoxProps> = ({
             <Text color={theme.text.primary}>
               {selectedAuthType.startsWith('oauth')
                 ? userEmail
-                  ? `Logged in with Google (${userEmail})`
-                  : 'Logged in with Google'
+                  ? `Signed in with Google (${userEmail})`
+                  : 'Signed in with Google'
                 : selectedAuthType}
             </Text>
           </Box>