Repair purchase.receipt schema, normalize payment_proof, add validator guardrails, remove unvalidated TS examples, regenerate checksums#21

GsCommand merged 1 commit intomaincommandlayer/protocol-commercial:mainfrom

codex/fix-integrity-and-canonicality-in-protocol-commercialcommandlayer/protocol-commercial:codex/fix-integrity-and-canonicality-in-protocol-commercialCopy head branch name to clipboard