dsh-subagent-tools: Add single-call override parameters for DeepSeek Harness

dsh-subagent-tools is an MIT-licensed plugin for DeepSeek Harness (DSH) designed to enhance the flexibility of subagent delegation tools. It allows for the dynamic overriding of model, provider, persona, and toolFilter parameters in a single call, supporting composite model IDs and @preset: preset references to accommodate differentiated requirements for models, roles, or tool strategies in different tasks. The plugin is provided as a standard bundle without modifying official files and ensures compatibility with DSH versions via peerDependencies. During installation, the plugin must be added first; Web session users also need to run the preset adapter and restart the service. Typical...