The site exporter now splits sidewalks and kerbs into ~20 m pieces (SEGMENTED / SEGMENT_M in Art/blender/site/export_site_fbx.py), 56 slices in all, so each has a bounding box that means something where it stands instead of reporting the highest point on a 279 m slope. They import and stage (63 site meshes in the demo map). The hypothesis behind it is dead, and that is the useful part: with the invisible sidewalk stopgap retired, the player now falls to Road_Hollywood at 366 - the slices do not block either. So the 279 m aspect ratio was never the cause; a 20 m slice of the same mesh fails identically. The sidewalk geometry itself is what does not collide, and the next place to look is its shape - an open surface with no volume, inverted winding or zero-thickness triangles - not the import flags and not the size. The stopgap retirement stands: the player walks on the road, which is real geometry that does collide, rather than on an invisible ledge.
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.