tools/glb_to_sprite.py completes SPACES.md's 3D route — fixed ortho camera fitted
to the mesh bounds, flat light, transparent film, straight into props_import.
A/B'd on one pool table: TRELLIS wins for objects with volume (worn felt, real
pockets, rails), flux stays for flat things. Rake is 60 not 90 — straight down
turns a fridge into a grey box.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>