Add context/overlay registration, injection, query, and refresh to the
KCSDK C++ library and kcsdk pybind11 module.
New files:
- src/Gui/SDK/Types.h — ContextDef, OverlayDef, ContextSnapshot structs
(plain C++, no Qt in public API)
Modified:
- src/Gui/SDK/SDKRegistry.h/.cpp — register_context/overlay, unregister,
inject_commands, current_context, refresh (delegates to
EditingContextResolver with std↔Qt conversion)
- src/Gui/SDK/CMakeLists.txt — add Types.h, link FreeCADGui
- src/Gui/SDK/bindings/kcsdk_py.cpp — bind all context functions with
GIL-safe match callable wrapping and dict-based snapshot return
- mods/sdk/kindred_sdk/context.py — try kcsdk first, fall back to
FreeCADGui for backwards compatibility