Make switching between multiple Codex accounts easy on macOS

[igneous-prose]

Summary

This PR makes it easy to switch between multiple Codex / ChatGPT accounts on macOS without manually copying auth files or re-running login flows.

CodexBar can now save named local profiles from the current ~/.codex/auth.json and restore them later. Because both Codex.app and the codex CLI use that auth file, switching a saved profile effectively switches the active account for both Codex Desktop and Codex CLI.

CodexBar is the UI for the workflow, but the main user benefit is simple multi-account switching for Codex on macOS.

Why This Matters

Today, switching between Codex accounts on macOS usually means manually replacing ~/.codex/auth.json or signing in again.

This PR turns that into a one-time setup:

1. Sign into an account in Codex.app or codex.
2. Save it as a local profile in CodexBar.
3. Repeat for any additional accounts.
4. Switch between saved accounts later from CodexBar.

After a switch, the restored auth is the one used by both Codex.app and the codex CLI.

What This Adds

• A Local Profiles section in the Codex provider settings.
• A Switch Local Profile submenu in the Codex menu bar menu.
• Save Current Account…, which copies the current live Codex auth into ~/.codex/profiles/<name>.json.
• Profile switching, which restores a saved profile back into ~/.codex/auth.json.
• Reopening Codex.app after a successful switch so the desktop app picks up the restored account.

Multi-Account Workflow

This is intended to work for more than two Codex accounts.

The flow is:

• Sign into a Codex account once in the Codex Desktop app or Codex CLI.
• Choose Save Current Account… in CodexBar.
• Repeat for each additional account you want to keep available.
• After profiles are saved, switch entirely inside CodexBar from Settings or the menu bar.

There is no hard-coded account limit in this change. The practical limit is UI usability rather than the implementation.

Safety And Behavior

• Refuses symlinked auth and profile paths.
• Restricts switching to saved profiles under ~/.codex/profiles.
• Confirms before closing Codex.app and any running codex CLI sessions.
• Reopens Codex.app after a successful switch.
• Creates private backups in ~/.codex/auth-backups before switching and prunes older backups.
• Hides redundant save actions when the current live auth already matches a saved profile.
• Keeps the existing Accounts UI close to the current CodexBar layout and isolates the new workflow in a separate Local Profiles section.

Screenshots

Menu Bar Switching

Settings Local Profiles Section

Settings Help Tooltip

Verification

• swift build
• ./Scripts/compile_and_run.sh
• Manual checks for:
  • save current account
  • switch from Settings
  • switch from the menu bar
  • hide Save Current Account… when the current live auth already matches a saved profile
• corepack pnpm check still reports an unrelated pre-existing formatting issue in Sources/CodexBar/Providers/Codex/UsageStore+CodexAccountState.swift
• swift test --filter ... is still blocked by unrelated pre-existing test-compilation failures in existing test files such as SettingsStoreTests.swift and StatusItemAnimationTests.swift

Notes

• The menu bar stays intentionally minimal; the extra guidance lives in Settings only.

[chatgpt-codex-connector]

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[jskoiz]

There is already a menu switcher in StatusItemController+Menu.swift (line 692), selection handling in StatusItemController+Menu.swift (line 710), and UI in StatusItemController+SwitcherViews.swift (line 899 that allows you to switch between multiple codex accounts.

[ratulsarna]

Thanks for the PR @igneous-prose ! This feature was already in the works but since we had the same idea at around the same time, I'll be crediting you for the idea as well :)