The master limped clean (218x gimp-cycle records, zero trn) -- a _ReturnAddress
trap on SetAnimationState(4) proved ALL peer trn arming came from the port's own
mech4 turn-step block, not the type-3 reader. Two dead ends, one root:
- mech4 peer arm: gated on !wantsWalk (standSpeed < bodyTargetSpeed), exits trn
when walking demand appears -- the leg twin's authentic precedence
(part_012.c:12013, the Standing speed test outranks the turn test).
- mech2 body case 4: bspd reads bodyTargetSpeed on ReplicantInstance; the local
mapper's speedDemand is a dead cell on a peer (reads 0 forever -> no exit).
Verified 2-node timeline: arena circle replicant 218x state-24 / 0x state-4
(was 116x trn churn), grass circle 235-clean, knockdowns bounded, 0 deaths.
Diagnostics kept: BT_TRNTRAP ra-trap, BT_ANIMIND_CAP, [gimpfeed], [replgimp]
extension. KB: locomotion.md trn-lock entry + the dead-mapper-cell lesson.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QRjrTQpJd6u9XyfnUbTB3v
