Stats quietly inverted: shitboxier IRL = better in game. Excel X3 is now the
fastest car; TURDRUNNER is the slowest. tools/import_shitbox.py converts
downloaded models (glb/gltf/fbx/obj/blend) to game GLBs -- normalizes scale,
yaw, ride-height origin. First two imports: Corolla mk7 and Morris Mini.
shitboxes/ stash gitignored + .gdignore'd (its .blend files broke Godot's
headless import scan).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>