dsh-custom-subagents: DeepSeek Harness (DSH) Reusable Subagent Plugin

dsh-custom-subagents is a visualization plugin for DeepSeek Harness (DSH) used to define and reuse subagents. Users can configure roles through the interface, such as a code reviewer, and the main agent can invoke them at any time via the `delegate_agent` tool. The plugin supports tool inheritance, prevents infinite nesting with a hard depth limit of 3 levels, and ensures runtime configuration safety, addressing the cumbersome native creation workflow and the risk of infinite recursive nesting.