DCQL query template for the iGrant.io Authenticator credential (credential type io.igrant.authenticator). It asks a wallet for one claim, email_address, in dc+sd-jwt, jwt_vc_json or mso_mdoc. Use this skill when you build passwordless login with an EUDI Wallet, so a returning user proves the email address that identifies the account, and you need the exact credential type and claim paths from the iGrant.io verifiable data registry.
