[BUG] the harness leaking my email, my name and surname into the system prompt

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?

Claude Code injects the user's Anthropic account email into the assistant's system context via a # userEmail block; this is sensitive and should not be exposed to the model.

The model uses my personal data to sign git commits / emails / etc.

What Should Happen?

Anthropic MUST never intentionally share my personal data with everything Claude Code touches.

Error Messages/Logs

Steps to Reproduce

1. Open system prompt
2. Delete it

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.138 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

disgusting