Convert data into Standard.site AT Protocol lexicon records and validate them against official schemas. Use when creating or verifying site.standard.publication, site.standard.document, site.standard.graph.subscription, site.standard.graph.recommend, or site.standard.theme.basic records — even if the user doesn't name Standard.site directly. Also use when working with AT Protocol blog or article publishing workflows, or when mapping content to standard.site format from other sources.