Scene Export

Scene export is implemented by src/unilab/tools/export_scene.py and registered as the unilab-export-scene console entry in pyproject.toml. It accepts a MuJoCo XML or MJB model path, writes scene.xml, copies mesh assets when they are discoverable, and can create a zip archive.

For task-level materialization checks, use the script that constructs an env from the registry and owner config:

uv run scripts/visualize_task_env.py --task Go2JoystickRough --backend mujoco --num_envs 4

tests/test_export_scene.py covers the export helper, including scene.xml creation, reloadability, and zip output.