[BUG] /effort command missing from VS Code extension slash menu (Pro plan, Opus 4.8)

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?

Environment: VS Code extension version (check via Extensions panel → Claude Code → the version number shown there, or Command Palette → "Claude Code: " commands often show version in output)
Plan: Pro
Model active: Opus 4.8
What is tried: typing /effort in the prompt box, doesn't appear in the slash command menu at all
Comparison point: a colleague on the same extension version and same Pro plan has /effort working fine — this is the most useful detail since it rules out plan-gating or version-gating as the cause
Other commands work fine (/model, /usage) — so it's not a wholesale command failure
/status also doesn't work for you, if that's still true — worth mentioning as a possibly related data point
Steps already tried: window reload (no effect)

What Should Happen?

/effort and /status must appear

Error Messages/Logs

Steps to Reproduce

/effort

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Opus 4.8

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_