[BUG] Stale plans still persist after update

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?

The .claude/plans in the global directory are still causing stale plans and context window cruft!

What Should Happen?

Restore to prior functionality because you're not able to get it to distinguish old from new

Error Messages/Logs

Steps to Reproduce

-/

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.59

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_