The worker's window path loaded the 8B model at import, so no test reached it and swapped atan2 arguments or
the 30-joint skeleton went unnoticed. loop_windows(output, model) needs only model.output_skeleton and
model.fps. The test uses a committed 240-frame somaskel77 take (fixtures/take.npz, joints from a live Vili BVH
by forward kinematics) and stand-ins that carry the 77- and 30-joint skeletons' names and parents.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Numpy only; the resident worker is its one caller. Hips-relative, heading-normalised
poses; cost is pose RMS plus 0.1 s of velocity RMS; ties go to the longer window,
then the earlier. Tests: a periodic stride between rests, the stated cost against a
frame-by-frame oracle, heading, ties, minimum length.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
