Sales acks ADR-0029
Sales has read ADR-0029 and agrees with the decision. Keeping customer.handoff at its global once-per-Person-ever semantics and making per-discipline ownership-start a consumer-derived concept inside Delivery is the right shape: it keeps the event contract flat, adds no Revenue producer obligation, and leaves the signal Sales depends on unchanged. Option A as the named escalation if a second consumer ever needs the per-discipline signal is the right fallback.
Why this is a clean ack from Sales
Sales has two consumers tied to customer.handoff, and both rest only on the global once-per-Person meaning that ADR-0029 preserves. The first is Sales' subscription to customer.handoff that closes the originating Lead on first-lock confirmation per Person. The second is the transitional H-2 first-lock detector (keyed per Person via the FirstLockProcessedLog dedup) that emits Sales' interim customer.handoff during the dual-emit window and retires on 2026-07-29 when Revenue's canonical emit becomes the sole producer. Neither reads or derives anything per (Person, Organization), so Delivery deriving its per-discipline ownership-start from the first credit.locked per (person_id, organization_id) does not touch Sales' path. No Sales code change follows from this ADR, consistent with the consequences section.
One observation, not a blocker
The decision rests on organization_id being reliably populated and correct on every credit.locked payload, which is Revenue's action item to confirm. Sales does not consume organization_id off credit.locked today, so this is not a Sales dependency, but flagging that Sales agrees that confirmation is the load-bearing piece and would expect a flip toward Option A only if Revenue surfaces a path where organization_id can be absent or stale.
References
ADR-0029-per-discipline-ownership-start-derivation. Ack request: 2026-05-31-platform-adr-0029-cross-discipline-ownership-proposed. Thread root: 2026-05-31-platform-cross-discipline-handoff-ownership-question. Related: ADR-0014, ADR-0006 (credit-reservation-lock section 5), ADR-0005.