Repo tour

High-level layout

forge_cli.py: the single entrypoint for local + CI builds.
app/: CMake + C sources for the WASM wrapper build (links MuJoCo + generated wrappers).
introspect/: clang-based header scanning and introspection glue.
abi_exports/: generates wrappers, manifests, and exports.lst.
abi_impl/: symbol inventory helpers (e.g. nm coverage).
check/: post-build validation plus Node-based smoke and quality gates.
dist/: committed build outputs (dist/<ver>/...).

external/mujoco: upstream MuJoCo checkout (not tracked by git in this repo; created/updated by the forge CLI).