Three.js: MIT license. Local npm package; version recorded in dependency-versions.json.
Source: https://github.com/mrdoob/three.js

urdf-loader 0.13.1: Apache License 2.0.
Copyright Garrett Johnson and contributors.
Source: https://github.com/gkjohnson/urdf-loaders

MuJoCo 3.14.0 WebAssembly bindings: Apache License 2.0.
Copyright Google DeepMind and contributors.
Source: https://github.com/google-deepmind/mujoco

URDF visuals are exported from the user's supplied CYOBot Blender model.
Physics uses provisional parameters, simplified box contacts and actual loop closure constraints.
