DSH Plugin Introduction: dsh-doc-quick

`dsh-doc-quick` is a DSH plugin designed to address the challenge of agent access to local file systems. Users drag and drop documents in the Web interface, the host application saves them to a local directory, and the Agent reads, processes, and outputs the results in the right sidebar. The plugin supports multiple formats, including PDF, Word, and Markdown, and provides tools for file listing, reading, and completion registration. Installation is straightforward, and it relies on `pdfjs-dist` for PDF parsing. It is ideal for quickly processing local documents in a Web environment, significantly reducing interaction overhead.