Ruling A recorded as design. Measured: each build has one interpreter file (v3/src/vm.c hosted, kernel/src/vm/vm_core.c in the kernel) and the swap is a third, answering the same functions with a node. So the hosted v4 product is v3's hosted program with the node as its interpreter, not a separate program. Steps re-cut; two things in v3's C words that do not carry over as they are (vm_ptr into packed bytes, direct stack fields). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>