[BUG] /btw slash command suggested in tips but not implemented

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?

Steps to reproduce:

1. Use Claude Code normally
2. CLI displays tip: "Use /btw to ask a quick side question without interrupting Claude's current work"
3. Type /btw followed by a question
4. Get error: "Unknown skill: btw"

What Should Happen?

Expected behavior:
Either /btw should work as described in the tip, or the tip should not be shown.

Error Messages/Logs

Actual behavior:
  The CLI suggests /btw as a feature, but it's not implemented. Typing it returns "Unknown skill: btw".

Steps to Reproduce

Steps to reproduce:

1. Use Claude Code normally
2. CLI displays tip: "Use /btw to ask a quick side question without interrupting Claude's current work"
3. Type /btw followed by a question
4. Get error: "Unknown skill: btw"

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude Code v2.1.71

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_