trans-doc-to-md

Convert PDFs, Lexiang document links, or prepared Markdown packages into faithful bilingual Markdown work packages. Preserves source paragraphs, local image paths and order, and rich document structure; uses a generic article profile or strict PDF-rich profile as appropriate. Outputs source.md, optional images/, meta.json, and a final Markdown file named from the original title. Publishing is delegated to upload-markdown-to-lexiang; this skill contains no upload implementation. 将 PDF、乐享文档链接或已准备好的 Markdown 工作包转换为保真的双语 Markdown 工作包。