Read nspd_zoning.{max_far,max_height_m,max_floors,max_building_pct,
regulation_zone_index,regulation_source} (backend PR #1847) into the urban
scan-card, urban/buildability/potential drawers and the 3D massing КСИТ-target.
Defensive: every read is optional-chained + != null guarded → identical "—"
placeholders when fields absent, so the cockpit is unchanged until #1847 deploys,
then auto-lights-up. КСИТ density = area × max_far; пятно = area × max_building_pct
(percent 0..100, verified vs backend parser); sellable labeled estimate. 3D maxFar
= nspd_zoning.max_far ?? 3.5 (finite/>0 guarded). NspdZoning type +7 optional fields.
TS strict, no any.
Port the prototype massing.js to a client-only React component (MassingScene)
behind a dynamic(ssr:false) wrapper (MassingViewer), wired into the future3d +
insolation drawers, replacing the СКОРО SoonCards.
Generative mass from parcel area (real geometry_suitability.area_ha) × КСИТ-цель
3.5 (labelled regulation-default · НСПД — honest, real max_far not in /analyze),
OrbitControls (orbit/zoom/auto-rotate), time-of-day sun with shadows (insolation
preview), live GFA/КСИТ-факт metrics (green ≤3.5 / amber over). Full renderer/
scene/RAF dispose on drawer close; graceful WebGL-unavailable fallback.
Adds three@0.184.0 + @types/three (package.json + package-lock.json in sync).
SSR-isolated (three imported only in MassingScene). TS strict, no any.
