Allow procedural callbacks to write channels that no active anim writes on the same bone. Example: walk_anim writes leg.scl; procedural can now write leg.rot without track-conflict error. Previously the guard was track-level (any anim on the track blocked ALL writes). Enables hip-anchor-stable + leg-orientation-procedural pattern in vagrant-skeleton (legs parent=body for body-relative hips, leg.rot overridden per-frame to walk-direction while walk_fwd_lower drives leg.scl). Existing Group 4 track-conflict test still passes: walk_anim writes leg.rot in keyframes; procedural-write of leg.rot still errors (same channel). 42/42 assertions GREEN.
94 B
94 B