[BUG] @Claude tagged in Slack only has access to either my Slack conversation context or the code repo, not both at once

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?

I tagged Claude and it couldn't access the repo, but it saw the existing conversation. I switched the mode, and it couldn't access the conversation.

What Should Happen?

It should be able to see both at once

Error Messages/Logs

Steps to Reproduce

1. Tag @Claude in Slack
2. Ask it a question about the current (code-related) discussion in the channel

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Slack

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_