#wrong-scale

Two-stage flow: Blender headless emits Y-up OBJ, then pure Python writes vmats/vmdls and a C# model catalog.

Forge delivery job errors out but the build stage's previewGlbUrl stays downloadable — recover the GLB through Blender into your standard delivery shape instead of re-spending.

CapsuleCollider and ModelCollider ignore WorldScale; BoxCollider follows it — bake scale into import_scale instead.

FlatBox/Prop/Deco/Wire helpers plus Obstacle records as plain data beat physics queries for build validity.

1 m = 39.37 engine units — design in SI, convert once at the engine boundary, and audit every consumer.

AI mesh generators (Tripo, Meshy, Rodin) deliver textured OBJ+vmdl — but modeldoc32 headers, ~1m normalize, corrupt textures, bare texture paths, and missing colliders will ERROR the asset until patched.