- Add ambient and overhead point lighting (required for MeshPhysicalMaterial)
- Build circular floating platform with dark metallic rim and torus border
- Tile the inner circle with MeshPhysicalMaterial glass panels (transmission:0.92)
revealing the star-field void below through near-zero opacity
- Add glowing EdgesGeometry outlines on each tile with ripple animation
- Add void PointLight beneath platform that pulses to suggest infinite depth
- Elevate default NORMAL_CAM to (0,6,11) so the glass floor is visible from
normal view (Tab still reaches full overhead overview)
Fixes#123