提供 markitdown 工具，把 PDF、Word、Excel、PowerPoint、HTML、CSV、EPUB 与网址转成 Markdown：能找到真实的 Microsoft MarkItDown 时驱动它，否则使用内置的零依赖转换器。
curl -fsSL https://www.dshhub.co/install.sh -o dshhub-install.sh && bash dshhub-install.shAlready have DSH? Skip the wizard and install the market directly:dsh plugin --profile web add dshhub-market
This plugin installs only from the plugin side.