Revoke an Accounts-owned native registration

Default off. Accounts authorizes the current owner/admin of the exact existing Commerce workspace and signs a command. Core checks current Accounts JWKS and the SYNCED human workspace projection; no org, membership, merchant ADMIN key or Marketplace purchase is created. A command lease lasts at most 30 seconds, with at most 5 seconds future clock skew. JSON only; no query, Origin or Cookie. command_id has immutable semantic content; retries may refresh only issued_at and authorization_expires_at. No route executes a commerce or payment transaction. Requires current workspace owner/admin and the exact existing enrollment, connection and revision. No Microsoft login or provider access is needed. Removes READ permission, disconnects the sealed connection and advances revision. Exact retries do not increment again.