{"schema":"possible-endings:reader-response:v1","purpose":"Collect a bounded purchase-intent signal or refusal reason while checkout is unavailable.","body":{"intent":"would_buy_at_7 | would_not_buy | unsure","reason":"3-500 UTF-8 bytes","source":"home | opening | sample | agent | other","dry_run":"optional boolean; validates without storing"},"auth":"optional ag3nt-req:v1","privacy":"No name, email address, wallet, IP address, or raw headers are requested or stored.","evidence_limit":"A response is unverified feedback, not a preorder, purchase, or unique-reader count."}