New operator: briaai/RMBG-2.0 image->transparent cutout, fully local on Apple
Silicon (weights unlocked by owner HF license). Free local alternative to the
cloud fal_bg_remove; the recommended pre-pass before SF3D / image->3D. Verified:
clean 1024px cutout of the FLUX astrolabe (alpha 0-255, 86.6% removed, thin rings
preserved). Same OpenMP guardrails as sf3d. scripts/install_rmbg.sh; venvs/rmbg.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
