[BUG] "Ctrl+C to interrupt" message is misleading - Ctrl+C closes the window instead of interrupting (Windows)

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?

The UI displays "Ctrl+C to interrupt" during operations, but pressing Ctrl+C terminates the entire Claude Code window/process instead of interrupting the current operation. Esc works correctly for interrupting. The message is misleading and causes users to accidentally kill their session.

Environment:

• Claude Code version: 2.1.5
• OS: Windows 11
• Terminal: PowerShell (standard Windows Terminal)

Steps to Reproduce:

1. Start Claude Code
2. Give it a task that takes a while (e.g., searching files, running a build)
3. While it's working, note the "Ctrl+C to interrupt" message
4. Press Ctrl+C
5. The entire window closes instead of just interrupting

Expected behavior: Ctrl+C should interrupt the operation (like Esc does)
Actual behavior: Ctrl+C kills the process entirely
Workaround: Use Esc instead of Ctrl+C

What Should Happen?

Pressing Ctrl+C should interrupt the current operation and return to the prompt, just like Esc does. Alternatively, the message should say "Esc to interrupt" instead of "Ctrl+C to interrupt."

Error Messages/Logs

N/A - No error message is shown. The window simply closes immediately.

Steps to Reproduce

1. Start Claude Code
2. Give it a task that takes a while (e.g., searching files, running a build)
3. While it's working, note the "Ctrl+C to interrupt" message
4. Press Ctrl+C
5. The entire window closes instead of just interrupting

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.5

Platform

Other

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

No screenshots - the window closes too fast to capture anything. The issue is 100% reproducible. Just press Ctrl+C when Claude is working on any task on Windows.