[lane D] Round 1: pipeline scripts + assets.js loader
Ports PROCITY's pipeline shapes to GUTS (dry-run first, idempotent, resumable):
- gen_textures.py: flux_local wall/matcap pack, ART_BIBLE prompts, provenance JSON
- derive_maps.py: exact-tiling (4-way cosine partition-of-unity) + Sobel normals + WebP
- build_manifest.py / validate_manifest.py: catalogue-what-exists + qa hook
- gen_audio.py: procedural numpy synth, seamless loops, ogg+m4a dual-ship
- js/core/assets.js: manifest loader, null-on-miss, ?localassets=0 empty boot
Generation runs next on the m3ultra box.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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