Convert general documents to Markdown

Key features

• A DeepSeek Harness (DSH) plug-in that registers @firecrawl/anydoc as the anydoc tool to Agent and converts multiple document formats to GitHub-Flavored Markdown.
• HTML, JSON, XML, images and audio are not supported.
• After starting DSH Web, send similar instructions to the Agent
• This project actively supports and thanks the LINUX DO community - a friendly communication space for technology enthusiasts.
• Based on @firecrawl/anydoc (Rust native bindings, napi-rs), executes in the libuv thread pool, does not block the event loop, and does not require any external processes or Python environments.