Box.Center was -Extent.Z*0.25 (below the root bone); the box then sat under the ground and the suspension pushed the chassis up. Raising it to +Extent.Z*0.35 cuts the float from ~33 m to 7.8 m, confirming the direction. Still not settled - the box centre and/or the root bone (grounded at Z 0 by normalise_scale) need to move to the car's centre of mass.
Game
The Unreal project lives at Game/GigLine/GigLine.uproject once created. Nothing here yet.
What gets committed
Config/— engine and project settings, including the quality presets used for release checksSource/— C++ modulesContent/—0.1.0map, materials, meshes; LFS-trackedGigLine.uproject
What does not
Binaries/, Intermediate/, Saved/, DerivedDataCache/ — all generated. .gitignore covers them; do not add exceptions.
Engine
Installed outside the repository. Its path and exact version are recorded in ../Docs/toolchain.md. Nothing in this directory may assume a machine-specific engine path; the documented build procedure is ../Docs/build.md.