Introducing the DeepSeek Harness Chinese Writing Assistant Plugin

`dsh-cnwrite` is a Chinese writing plugin for DeepSeek Harness, providing fully local typesetting and statistics. The `cn_polish` tool automatically adds spaces between Chinese and English text, converts full-width punctuation, standardizes quotation mark formatting, and collapses blank lines without affecting decimal points or URLs. The `cn_stats` tool reports total character count, Chinese and English character counts, paragraph count, and estimated reading time. The plugin requires no internet connection or API key and has simple logic that can be invoked directly from the chat box after installation.