dsh-model-controller: A Dynamic Model Routing Plugin for DeepSeek Harness

`dsh-model-controller` is a plugin for DeepSeek Harness, designed to automatically select the appropriate model and reasoning intensity through keyword and semantic classification, replacing cumbersome manual switching. This plugin supports mixed, semantic-only, and regex-only matching modes, and provides dedicated routing for Plan Mode. Installation requires compliance with Node.js and Harness version requirements and configuration in the settings. The default rules cover scenarios such as complex structures, code reviews, and small scripts, significantly reducing maintenance costs and improving task suitability.