dsh-subagent-response-promoter: DeepSeek Harness Subagent Response Promoter Plugin

`dsh-subagent-response-promoter` is a DeepSeek Harness plugin designed to resolve delayed processing of subagent responses while the parent agent is busy. Using a host-side architecture, it prioritizes subagent responses and coordinator relays ahead of ordinary context at agent step boundaries, ensuring the parent responds to subagents first without interrupting ongoing model reasoning or tool calls. It is simple to configure and suitable for complex agent workflows that require stable response priorities.