Share the technical implementation of Markdown export and publish copy in CodeWF.Markdown and Vex: MarkdownDocumentExporter, ExportKind, shared image loading, SVG/GIF/WebP rasterization, Word embedded media resources, selectable text PDF, Windows CF_HTML rich HTML clipboard, and extensible typography themes.
对邮箱地址做小写、去标签等规范化处理，支持 Gmail 点号规则。