[BUG] Ctrl+H deletes word instead of single character in Windows Terminal + clink

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?

In the Claude Code CLI chat input, pressing Ctrl+H deletes an entire word backward
instead of a single character. This is the behavior of Ctrl+Backspace/backward-kill-word,
not the expected backward-delete-char (single character deletion).

This is a regression — it worked correctly in a previous version.

My environment is:

• OS: Windows 10 Pro 22H2, Windows 11
• Terminal: Windows Terminal with cmd / powershell / pwsh
• Claude Code: 2.1.119

What Should Happen?

Ctrl+H should delete single character only.

Error Messages/Logs

Steps to Reproduce

1. Execute Windows Terminal
2. start powershell (or pwsh or cmd)
3. execute claude.exe
4. input "foo bar baz", then hit CTRL+H
5. "baz" is deleted, not only "z"

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.109

Claude Code Version

2.1.119

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_