The licence manager hands the vault a licence's grant and access token through a verb of the seat mesh-vault; the manifest validator refuses a seat verb the definition does not serve, so the definition carries it, and the generated Go and TypeScript follow. Builds: design 39 bus-and-switch §15, B1, B4, B5 Claude-Session: https://claude.ai/code/session_01NcbgfHb9d4T9nq5Q6WqdiJ