[BUG] "No plan found. Please write your plan to the plan file first." after hitting limits and later resuming conversation in another process.

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?

After hitting limits, then enabling extra usage, and later resuming conversation in another process Claude Code in plan mode shows: No plan found. Please write your plan to the plan file first..

After a manual hint here is your plan: </home/claude/.claude/plans/<prev-plan-name>.md> Claude Code reads the plan, continues to update the plan, but then still shows the No plan found. Please write your plan to the plan file first. message.

What Should Happen?

The system should detect and load the existing plan file once the user resumes the session.

Error Messages/Logs

No plan found. Please write your plan to the plan file first.

Steps to Reproduce

• Start a coding session with a plan file.
• Hit usage limits so the session stops.
• Enable extra usage and resume in another process.
• Ask to continue the plan; system replies “No plan found…”
• User provides the hint showing the path to the existing plan file.
• System reads and updates the plan, but still repeats “No plan found…” afterward.

Claude Model

Opus 4.5

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.64 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

<img width="1674" height="1638" alt="Image" src="https://github.com/user-attachments/assets/d64129ab-629c-4f0e-ad3a-06c052618d3b" />