merge andrea-geo: geometry/material/property system features

Merges all work from andrea-geo branch:
- Geant material management classes
- Serialization enhancements (read-only, NVP/HRP macros)
- Transform/assembly system improvements
- VTK puppet/viewport updates (orthographic toggle, voxel rendering)
- Property grouping, dynamic properties, NotifyPropertiesUpdated
- Object type identification via uLibTypeMacro
- New tests (PropertyGrouping, ReadOnly, vtkQViewport, PuppetParenting)
- Various gcompose UI fixes

Conflict resolved in CMakePresets.json: kept both 'fast' (clang/lld)
and 'mutom' (stub) presets.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CMakePresets.json

@@ -27,6 +27,12 @@
                 "CMAKE_CXX_COMPILER_LAUNCHER": "ccache",
                 "CMAKE_C_COMPILER_LAUNCHER": "ccache"
             }
+        },
+        {
+            "name": "mutom",
+            "description": "",
+            "displayName": "",
+            "inherits": []
         }
     ]
 }