dsh-legion: DeepSeek Harness's Multi-Agent Delegation and Model Routing Plugin

dsh-legion is a TypeScript multi-agent orchestration and LLM model routing plugin designed for DeepSeek Harness (DSH), aiming to extend existing runtime capabilities rather than introducing an independent framework. Its core mechanism delegates delegation strategies to deployment-side configuration; coordination agents select semantic Specialists (such as 'quick', 'deep', 'review') solely through the `legion` tool, while specific model routing, backend types, tool filtering, depth, and result contracts are determined by plugin configuration. This plugin supports precise multi-provider model routing, multi-sub-agent backend strategies, structured versioned result output, custom Cohorts, and declarative Strategies, and features hard resource limits and explainable diagnostics.