[BUG] OAuth token expires frequently despite refresh_token presen

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Authentication drops multiple times per day. ~/.claude/.credentials.json contains a refreshToken but it doesn't auto-refresh. Requires manual /login each time.

What Should Happen?

Token should auto-refresh using the stored refreshToken without requiring manual /login. Sessions should stay
authenticated indefinitely.

Error Messages/Logs

Steps to Reproduce

1. /login in one session
2. Run Claude Code in multiple tmux sessions
3. After some hours all sessions lose auth simultaneously

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.92 (native installer)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_