vm_physics_remove() retires the node (heat to the root) and frees it;
capsule_vm_kill() and capsule_vm_force_reap() call it, so WIREBIND/EJECT
kills and reaps now retire too (before, only the KILL word did). A dead
VM now leaves only its registry node (168 B). 3-ISA acceptance clean.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
