New native object ymir_box3d_soa (ABI 1): gravity, free rotation, spheres and static boxes,
one worker, state copied once per step into contiguous lanes that a caller reads in place.
Managed Box3DSoaWorld/Box3DSoaView expose the lanes as spans. The planar retained session is
unchanged. Tests: fall and rest, in-place reads, bit-for-bit repeat runs.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
nibu
7d9f1b57a1