DeepSeek Harness Plugin: `read_document` Tool

The `@jiaoqsh/dsh-document` plugin for DeepSeek Harness (DSH) enables models to directly read documents in multiple formats locally. It supports formats such as Word, PowerPoint, Excel, PDF, and RTF, converting files into Markdown for model parsing without the need for external APIs or network access. It supports pagination, metadata extraction, and file system integration. Users must install the plugin by specifying a profile and configure parameters (such as file size limits and the number of PDF pages). The plugin runs locally but does not support OCR and has specific limitations in handling PDF layouts.