On 2026-11-10 a seat contract and an event's subject that differed from design 47 surfaced only in develop, and the checker twice dropped a check still running when its pull request merged. The prepare now compares every seat contract the milestone touches with its design lines, each difference a design question before develop; and a merged change with no verdict is reported as unchecked, never as passed. Claude-Session: https://claude.ai/code/session_01JG73KK8HD1gufnqyFxMFdW