Cameron affirmed 2026-07-07: no new finance cast member at B1 — Priya audits all Lab financial signatures (facilities spend directly, operating-account anomalies as the person reconciling the books). A dedicated financial observer arrives as a B3 aggregate, consistent with income.md's banked-signature design. Removes the spec's 'a finance role / upstairs' ambiguity before the implementing agent is dispatched. Docs only.