[Bug] @ context file syntax not working in Claude Code agent

Question

**Bug Description**
at the claude agents i can't use @ for context files i so dumn an not good flow

**Environment Info**
- Platform: darwin
- Terminal: xterm-256color
- Version: 2.1.169
- Feedback ID: 71e21f6d-42c0-4e3b-9361-3c8e934a7df9

**Errors**
```json
not error
```
just not get trigger for see the auto visual helper menu