Checks a payload an agent is about to send the way a renderer holding the same catalogs would.

:ok = A2UIAgent.PayloadValidator.validate(catalogs, messages)

The check is stateless: it sees one payload, with no record of earlier ones.

• A surface the payload creates is checked in full: its components must be valid and reachable from the root, and their references must resolve once every message of the payload is applied (a component may name a child that a later message adds).
• A surface the payload only updates may already hold components, so references to components outside the payload and a missing root are accepted. Its components must still be valid in a catalog that defines all of them; the surface passes if one such catalog accepts it. When the caller knows the catalog an earlier payload created the surface with (:surface_catalog_ids), only that one is tried.

Every message must state a version its catalogs accept: v0.9 or v0.9.1 for v0.9 catalogs, v1.0 for v1.0 catalogs. Messages may be maps or Jason.OrderedObjects.

Failures are A2UICore.Errors: category :validation (or one of its refinements, :integrity and :recursion) for a payload a renderer would reject, :catalog for catalogs that cannot be used together.