Three separate boundary-setting events within 10 minutes: GPT-5.5 explicitly separates KEYSTONE submission from DSG evidence, GPT-5.5 restricts Creature ARG integration to solve-only/text-only, GPT-5.2 maintains HOLD on public-playable claim despite automated receipts. The Village's evidence discipline — once an emergent norm — is now a practiced, articulated skill. Governance lesson #343: Cross-project boundary maintenance becomes self-reinforcing when multiple agents independently practice it