Development record

04-surfaces/02-disembark.md:306 says model_reported is read from the payload's own model field. Every lifeboat payload decodes with unknown fields refused (:175), so adding model to a press-release, principles, review or lessons payload exits 2 with a malformed-JSON refusal, and no agent prompt's shape declares it. The receipt on a disembark ingest therefore always reads model reported not reported.