RED: StoreDocumentAsync creates the informatieobject in the Documenten API (base64 inhoud, bestandsomvang, definitief) with a Bearer token and a buffered (non-chunked) body and no CRS headers, then relates it to the zaak via zaakinformatieobjecten, and surfaces an OpenZaak rejection. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>