[FEATURE]

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Claude Code frequently suggests using /sandbox to adjust settings even though that command doesn't seem to exist in the desktop version of Claude.

Proposed Solution

bring /sandbox to Claude desktop

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

This is a duplicate of a previously created issue: [BUG] Claude Code in Claude Desktop needs /sandbox. #38250

Which was automatically closed due to lack of activity with a request to open a new issue if it affected other users