Curate Flight Guide

Request one small, deterministic curation batch from a source frame.

The browser never supplies flight candidates. source_frame_id is a server-issued identifier for the canonical search cohort persisted on the trip, so Brain can only judge entries that remain checkout-capable. observation_ids optionally targets a small exact set from that cohort for customer-opened cards; normal progressive curation uses cursor.

Stable page metadata plus judgment-only patches; never inventory.

retryable means rerun the same cursor because the model returned only a partial wave. terminal means keep inventory usable and stop automatic retries for this curation run; a customer-initiated retry may start over.