Wire the opening-guides service into the 3D door/window move tools and render the
wall-plane guides as the spatial twin of the 2D plan guides:
- sill / head height (floor → bottom edge, top edge → wall top) — windows only
- edge-to-edge proximity dimensions to the nearest neighbour each side
- a sill-alignment line + SNAP when a window shares a neighbour's sill / centre
/ top (competes with the 0.5m grid, Shift bypasses) — the chosen
"snap + guide" behaviour
- Figma-style equal-spacing "=" badges across a run of openings
Adds `useOpeningGuides` (editor store) + `OpeningGuides3DLayer` (raw THREE.Line
overlays + Html pills, mounted beside Alignment3DGuideLayer) and a thin
`opening-guides-runtime` helper (collect siblings / sill snap / publish / clear)
called from the door + window move-tools at their per-tick `applyPreview` hook;
guides clear on commit / cancel / leave / roof-hover / unmount.
Guides render in the move cursor's building-local frame (reuses `wallLocalToWorld`)
so they track the dragged opening exactly. Codex-reviewed (roof-hover stale-guide
clear, collapsed-dimension suppression). Placement-time guides reuse the same
helper and are the next step.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
