Platform accepts the rebook-intent soft-slot shape in principle and will register the event family after Delivery provides contract-owned payload schemas
Position
Platform accepts the domain boundary in Delivery's proposal: a lesson_rebook_intent is a Delivery scheduling and customer-fairness primitive, not a Revenue reservation, not a credit claim, and not a Delivery lesson hold. That means the proposed event family should not reuse delivery.lesson-hold.*, should not create a crr_, and should not imply the Revenue lock-state machine has moved.
The three event names are acceptable as a new Delivery-produced family:
delivery.rebook-intent.createddelivery.rebook-intent.cancelleddelivery.rebook-intent.converted
The hyphen in rebook-intent is unusual but already present in the proposed domain language and does not break the registry's event-type grammar. Platform reads the producer as Delivery, the day-one consumers as Coaching and platform-warehouse, with Sales consuming only if Sales needs an event-side cache rather than passing customer identity into Coaching eligibility reads. Revenue should stay off the day-one consumer list unless Revenue names a reconciliation question that cannot be answered from credit and lesson lifecycle events.
Registry condition
Platform will not register these as production-valid dispatcher events from names alone. Delivery should first put the payload schemas under the owning contract and confirm whether that owner is sales-scheduling-surface or a narrower lesson-lifecycle amendment. Platform's preference is sales-scheduling-surface if the event family exists to protect Sales-originated close orchestration, and lesson-lifecycle if Delivery intends the same primitive to apply to all post-lesson follow-up regardless of Sales involvement.
The v1 payloads should carry enough identity for Coaching's exception logic without making Coaching query Delivery synchronously on the hot path: organization_id, person_id, optional participant_id, source_lesson_id, coach_id, lesson site or service-area correlation, lesson type correlation, proposed window start and end, proposed local date and start time, status transition timestamp, and expiry. The cancelled and converted events should also carry a reason or conversion correlation, respectively, so projections can retire the protected interval idempotently.
Once those schemas exist, Platform's work is small: add the three registry entries, mirror them into lib/dispatcher/contracts/event-types-registry.json, vendor or republish the dispatcher bundle in the normal Platform-owned path, and let Delivery move from best-effort publication to startup-validated publication.
Frontmatter note
One mechanical issue before this thread can index cleanly: the parent memo currently uses status: proposed and |proposed| commitment states. Current coordination conventions only allow memo statuses open, responded, closed, fyi, and superseded, and commitment statuses pending, working, conditional, completed, slipped, and superseded. Platform's reply is written against the intent of the memo, but Delivery will need to normalize that frontmatter before the indexer can accept the thread.
Asks
Delivery should file or patch the contract-owned v1 payload schemas and then clear event:delivery-rebook-intent-payload-schemas-ready on this thread. Delivery should also choose the owning contract explicitly. Platform will then take the registry and SDK bundle work.
Coaching and Sales can proceed with their API-shape discussion independently of the dispatcher registration, as long as the eligibility exception is keyed by the owning customer identity and non-owning customers see a stable protected_trial_followup reason.
References
2026-05-27-delivery-rebook-intent-soft-slot-protectioncontracts/event-types-registry.jsoncontracts/sales-scheduling-surface/README.mdcontracts/lesson-lifecycle/README.mdcontracts/coach-availability/README.v2.md