DEMO ONLY: Blender logical-inventory physical study (DO NOT MERGE)

[Th0rgal]

DEMO ONLY — DO NOT MERGE

This draft PR adds an autonomous, reproducible Blender 4.2.9 LTS physical-visualization study. It is intentionally a conceptual demo and is not intended for merge, hardware use, fabrication, or public release.

Evidence and contents

• pinned exactly to base 618b39923862e660589cc6258e258783904b3861
• parses the repository’s final Yosys/ABC generic-cell statistic block (167,885 cells, 16 types)
• deterministic one-point-per-cell Geometry Nodes instancing preserves exact counts and proportions
• Eevee Next .blend, 4K hero, exploded, top, close-up, transparent hero, preview, contact sheet
• provenance manifest, SHA256SUMS, render timings, tests, visual-QA log
• permanent render notice: CONCEPTUAL · SKY130-INFORMED · NOT GDS/P&R

Explicit boundary

No floorplan, CTS, routing, timing, DRC, LVS, density, antenna, extraction, or fabrication claim. The source is a logical generic-cell inventory, not a SKY130-mapped or physical netlist. Pad ring, rows, layers, power, clock, and placement are deterministic visual abstractions.

Verification

python3 -m unittest blender_physical_study/test_package.py
python3 blender_physical_study/verify.py
blender --background blender_physical_study/artifacts/lean_silicon_physical_study.blend --python-expr "import bpy; assert bpy.context.scene['inventory_total'] == 167885; print('blend-ok')"
blender --background --factory-startup --python blender_physical_study/generate.py -- --profile scene

A 10-second/24fps orbit path is available with --animation, but is not committed: the measured one-sample frame projected about 104.8 minutes on the bounded CPU renderer.