emil28092005
de262732bd
feat: Unity-like object manipulation + physics fixes
- ObjectManipulator: left-click to pick, drag on camera-orthogonal plane
- Screen-space movement (like Unity), not ground-plane
- Skip dragged entity in SyncTransforms so physics doesn't fight drag
- Zero velocity on grab to prevent momentum accumulation
- ImGui selection sync with manipulator
- Floor lowered to y=-0.5, visual thickness corrected
- Physics shape sizes fixed (BoxShape uses half-extents)
- Collision pairs explicitly enabled in ObjectLayerPairFilterTable