IfcOpenShell

Build a real ifcopenshell_wrapper (.so + .py) and IfcConvert locally via the docker/ifcos_env toolchain, then wire them into a checkout for running C++-dependent parts of the test suite (geometry, the SWIG wrapper stub, the C++ parser). Use whenever a task needs to compile IfcOpenShell's C++ core rather than just read/patch source - e.g. reproducing or fixing a bug in src/ifcgeom, src/ifcparse, src/ifcwrap, or validating util/scripts/validate_stub.py against the actual generated wrapper.