curate for a page of one base: one verdict per id, never all-or-nothing (D-5533).
The same floor as the one-item route, because it is the same act repeated. 200 with a
verdict per id rather than a 409 for the batch: one item the transition table refuses
should not hold back the rest of the review queue. The base itself is a 404 when the
caller cannot see it, before any item is read.
The body shows the fields the schema always carries. Which combination is legal is a service rule the schema cannot express, so read the description above before copying this.