# H5 Gate Sign-Off — Extensibility

> Historical baseline only. Current production authority: [production-readiness matrix](production-readiness/).

**Date:** 2026-05-30  
**Result:** Pass

## Checklist

| # | Criterion | Pass |
|---|-----------|------|
| 1 | ADR 0007 EditorPlugin | yes |
| 2 | Command palette executes commands | yes |
| 3 | register_editor_plugin API | yes |

## Decision

**Go** for H6.
