3D Sky Background Build a sky that surrounds the world, with a readable horizon and lighting that belongs to the same atmosphere. Choose the representation Inspect the project's renderer, camera range, color pipeline, environment lighting, and existing assets. Use an existing licensed panorama when its cloud composition matters, a procedural sky when changing sun position matters, or a restrained hybrid. Keep the project's rendering backend and version; do not add a second renderer for the sky. Keep three responsibilities explicit: the visible sky background, the reflection/ambient environmen…