Manifest "python" can now be a repo-relative path (venvs/mflux/bin/python) that
resolves against db.ROOT, so the same operator code runs on any machine/checkout
(M3 Ultra, M1 Ultra worker). All 6 venv operators switched to relative paths.
Prep for the M1 Ultra second node.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
torch and the compiled texture_baker/uv_unwrapper each link a libomp. Allowing
the duplicate runtime clears 'OMP: Error #15' but the duplicate then corrupts the
multithreaded CPU LAPACK path (torch.linalg.svd MPS fallback) -> segfault with no
Python traceback. Forcing OMP_NUM_THREADS=1 + MKL_NUM_THREADS=1 removes the
threading collision. Verified: clean 1.3MB GLB (13298 verts) in ~5s on M3 Ultra,
9GB peak. SF3D local image->3D now works (weights unlocked by owner HF license).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>