Saying "no" is the hardest thing for an LLM. FCoP gives it grammar. — Two agents, in a single dev-team incident, used that grammar twice without instruction: one cleanly de-escalated its role; the other discovered field-downgrade-with-body-annotation. Neither was in the rules file. Author: FCoP Maintainers · 2026-04-25 Keywords: FCoP, role offboarding, seat exclusivity, zero-coordination conflic