FreeCAD workbench for Silo PLM integration. Uses shared silo-client
package (submodule) for API communication.
Changes from monorepo version:
- SiloClient class removed, imported from silo_client package
- FreeCADSiloSettings adapter wraps FreeCAD.ParamGet() preferences
- Init.py adds silo-client to sys.path at startup
- All command classes and UI unchanged
