Light Gizmo

Light gizmo, a small smooth emitter 0.8 m up over a thin drop line to a thin ring on y = 0; kind is point (a sphere), spot (a sphere with a thin cone of lines), directional (a disc with thin down arrows) or area (a flat panel facing down).

风格：low-poly, flat-shaded vertex colors, no textures, 3 materials: the shared opaque one plus a distinct surface (glass, water or chrome), which stays its own mesh through mergeAssets rather than merging into the rest; shares palette and scale with its kit