[wverri]

Change

Updates the vendored UO_Model3D (Levy, Kserian/UO_Model3D) from e9544f6 to b212cee (2026-10-20, v13.5), through b2d22af and 9db841d. Stripped the same way as before: the .blend re-saved by strip_originals.py with Blender 4.2 (no original atlas, uo_exact 0), and no .vd, .npz, .pkl, body13, test_data or the pipeline/ copy of the original atlas. The pipeline scripts are byte-identical to upstream b212cee.

What it brings for SpriteMotion:

• uo_cloth_sim.py pins the cloth to the moving target with animated shape keys. The old frame_change_pre handler left the pin on the first pose, so the whole garment drifted 7–12 cm off the body. It also adds fabric presets, thick, in_max and smooth, and imports bpy_compat.py. pipeline.py setup now copies that file and the render fingerprint includes it.
• render_uo_layer.py: adaptive item render, OUTLINE_TARGET, and optional robe shading (uo_contrast, uo_shade_*).
• 9db841d re-fitted the pose keys for natural motion and added the mounted head/neck yaw. b212cee leaves the model unchanged.
• Upstream made README.md the English README and README_PL.md the Polish one (README_EN.md is gone), so setup now checks README.md.

Also updated: provenance.json and NOTICE.md, THIRD_PARTY_NOTICES.md, CLAUDE.md, the end-to-end guide, docs/handoff.md and CHANGELOG.md.

Verification

• python -m pytest tests with a worktree venv: 221 passed, 2 skipped. The 2 failures are the Windows-path tests in tests/unit/test_fit_lab_paths.py (C:/…), which also fail on main under macOS and have nothing to do with this change.

• sha256 of the .blend matches provenance.json.

• pipeline.py setup --source third_party/UO_Model3D_v13, then real Blender 4.5 LTS preview builds (helm, one-handed weapon, robe with the cloth pass) on macOS. We have used this vendor in production builds of helms, 1H/2H weapons, bows and a robe since 2026-10-15, and the 9db841d pose re-fit changed 0.14% of a 1H katana review sheet.

• Tests pass; behavior changes have meaningful coverage.

• No UO data, commercial assets, private mappings, credentials or local paths included.

• Any media has redistribution permission and recorded provenance.

• Blender/render changes were checked with actual renders, or remaining verification is stated.

Risks and remaining work

• Not re-checked here: a full 35-action build of every starter part. Cloak and full mounted sets were not verified against the new pose keys.
• Upstream's cloth default thick 0.02 cracked the pleats on one of our robes; 0.005 with in_max -1 stayed clean. Upstream measured more leg pixels through the robe at 0.005, so this is noted in docs/handoff.md as a per-garment choice, not changed.