**Bug/UX: No way to switch accounts without clearing browser session**

What variant of Codex are you using?

0.2.3

What feature would you like to see?

Bug/UX: No way to switch accounts without clearing browser session

When logging in via Google OAuth, Codex always authenticates with the previously used Google account. There is no UI option to select a different account or log out.

Steps to reproduce:

1. Log in to Codex with Google Account A
2. Log out from platform.openai.com
3. Click "Sign in with Google" again
4. Automatically logs back in with Account A — no account selection prompt

Expected behavior:
A "Switch account" or "Sign in with a different account" option should be presented, or the Google account picker should appear.

Workaround:
User must manually log out of Google in the browser, or use an incognito window — which is unintuitive and a poor UX experience.

Environment:

• OS: Windows 11

Additional information

_No response_