add_boolean was removing second operands from ALL IfcShapeRepresentations
that referenced them, which could corrupt unrelated shapes and leave
representations with empty Items (bug #7803).
The API no longer modifies Items — callers manage this explicitly.
validate_type and Bonsai's AddBoolean operator now handle their own
item removal scoped to the correct representation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
replaced shapebuilder with general ifcopenshell code in `test_add_boolean` (the only place besides `test_shape_builder` where it was used), that way mathutils dependency in tests is localized only to `test_shape_builder.py`.
added test-safe option to makefile, so github workflow would ignore `test_shape_builder` tests for now and it wouldn't interrupt the entire workflow
added test that model.get_manual_booleans will ignore IfcBooleanClippings until we find some other solution to distinguish automatic and manual clippings. And some refactor along the way.
Dion Moult