dsh-advisor-plugin: DeepSeek Harness Model Review Plugin

DeepSeek Harness (DSH) has released the `dsh-advisor-plugin`, designed to address issues such as blind spots, drift, and premature completion in Coding Agents during self-validation. The plugin introduces an "independent second opinion" mechanism, enabling a review model to intervene through explicit consultation or automatic patrol by providing CORRECTION or STOP signals. It supports features including read-only investigation tools, failure isolation, dual degradation strategies, and an execution model blacklist. Users can install the plugin via command, configure the review model and reasoning level on the settings page, and invoke it within a session or enable it through a configuration file. The plugin requires DSH version 0.1.5-rc and Node.js >=22.19.