[BUG] /release-notes injects full changelog into conversation context (eats tokens)

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?

/release-notes dumps the full changelog as <local-command-stdout> into conversation context instead of showing the interactive version picker. The entire changelog (~40-60k tokens) sits in context for the rest of the session and burns through the token budget silently. I ran out of tokens in less than 20 minutes, no compacting was triggered to prevent it, no warning.

What Should Happen?

/release-notes should display an interactive version picker and not inject its output into the conversation context. At minimum, getting this information should not remain in context.

Error Messages/Logs

Steps to Reproduce

1. Start a Claude Code session
2. Run /release-notes
3. Observe that the full changelog is injected as <local-command-stdout> rather than showing an interactive picker

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.92

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

IntelliJ IDEA terminal

Additional Information

_No response_