[BUG] Permission prompt renders `-n -e` artifact at bottom of terminal in VS Code integrated terminal

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 Claude Code displays a permission prompt (e.g., "Do you want to proceed?"), an extra line -n -e followed by · Tab to amend is rendered below the normal Esc to cancel · Tab to amend footer. This appears to be a raw echo -n -e command leaking from the ink-based TUI renderer into the terminal output.

What Should Happen?

Expected behavior:
Only one footer line should appear:

Esc to cancel · Tab to amend

Actual behavior:
Two footer lines appear:

Esc to cancel · Tab to amend
-n -e                · Tab to amend

Error Messages/Logs

Steps to Reproduce

1. Open VS Code integrated terminal on macOS ARM64
2. Run claude
3. Trigger any action that shows a permission prompt (e.g., a tool that requires approval)
4. Observe the -n -e artifact below the prompt footer

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

v2.1.58 (also tested on latest after claude update)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

<img width="678" height="401" alt="Image" src="https://github.com/user-attachments/assets/0b63964b-2449-40f9-ba21-1d4c0f8bf38c" />