Internal /__remote-workflow command leaks into slash-command autocomplete in VSCode extension

Description

Typing /remo in the VSCode extension input box shows /__remote-workflow in the slash-command autocomplete, alongside /remote-control and /agents. The double-underscore prefix suggests this is an internal command (presumably part of the Remote Control plumbing) that should be hidden from the user-facing completion list.

Steps to reproduce

1. Open Claude Code in the VSCode extension
2. Type /remp in the input box
3. /__remote-workflow appears as a selectable autocomplete entry

Expected

Internal __-prefixed commands are filtered out of autocomplete.

Environment

• VSCode extension, macOS (Darwin 25.5.0)

(screenshot attached)

<img width="767" height="317" alt="Image" src="https://github.com/user-attachments/assets/6340fe5f-3c45-489f-8158-c154f36ea84a" />