Add bullets to §4.B for surfaces that landed after the 2026-05-20 skill update: - def.capabilities.paint (PaintCapability dispatch for paint mode) - def.capabilities.floorPlaced (generic FloorElevationSystem) - def.surfaceRole (Solid/Rendered/Clay render-mode pipeline) Also add a verb-not-host-kind rule and mark capabilities.roofAccessory as documented tech debt — extending the *Accessory / *Hosted shape is now a blocker rather than a precedent. Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>