[BUG] /rewind doesn't restore unpublished artifacts

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?

When the /rewind command doesn't detect any code changes, Claude Code only rewinds the conversation.

What Should Happen?

The state of the generated artifacts should be rewound as well.

Error Messages/Logs

The page is built but publishing is blocked: this session authenticates via
apiKeyHelper, which takes precedence over a claude.ai login. To publish it,
unset apiKeyHelper, then /login and pick "Claude account with subscription" —
I can re-run the publish after that.

Steps to Reproduce

1. Use Claude Code with apiKeyHelper, so that artifacts will be saved locally
2. Send a prompt to produce an artifact, e.g. "Count the lines of code in the project per module and output to a page" (CC should create a file /tmp/claude-0/artifacts/...)
3. Tell Claude Code to "Update that artifact" with something (e.g. "group by language as well")
4. /rewind to the first prompt

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.251

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_