[Danyals-code]

Material pool

• Scan a folder of PBR texture sets (ambientCG / Poly Haven naming) into a pool with per-material ticks; names stay stable across rescans and are unique even when folders share a name
• Box-projected Principled materials at a real-world Texture Size, so CAD meshes need no UVs; packed ARM supported; normal and opacity maps listed but not used
• Moved libraries are rescanned before rendering; pre-flight stops the batch when textures a material uses are missing

Material patches

• A flat swatch and a lit ball side by side per material, on demand or with Render All, in the scene's colour management; the first shard makes them in sharded runs

Product variants

• N Full renders per view, each part (or the whole product) drawing a pool material; draws are hashed per seed, product, variant, part and material, so changing the pool moves only the draws it touches
• Clay, masks and data passes rendered once per view; products set to Keep Own render once in their own materials
• {variant} naming token; manifest variant/materials columns; the pool recorded in provenance; pool materials removed after a run

Tests

• test_materials.py