"@" does not complete untracked(newly added) files

[caisah]

Checklist

• I agree to communicate with the author myself (not AI-generated).
• I've read the README's Filing issues section.
• I'm running the latest versions (fill in below).
  • agent-shell version: 0.51
  • acp.el version:
  • ACP package (e.g. claude-agent-acp) version:
  • Agent CLI (e.g. claude, gemini) version:
• For requesting new agent support, I'm including a link to the ACP-capable agent or related ACP package.
• For issues, I'm including ACP traffic (as per README).

Issue

@ completion is not firing for newly added files.
Sometimes the agent creates some files which need to be referenced later, in the same session. But these are not displayed when using @.