Mesh geometry-type handler — per-type wiring for the scene-loader's load + stage phase. Mirrors data/points/handler.ts, data/lines/handler.ts and data/gsplats/handler.ts so all first-class geometry kinds share the same loader/update shape.
data/points/handler.ts
data/lines/handler.ts
data/gsplats/handler.ts
Mesh geometry-type handler — per-type wiring for the scene-loader's load + stage phase. Mirrors
data/points/handler.ts,data/lines/handler.tsanddata/gsplats/handler.tsso all first-class geometry kinds share the same loader/update shape.