dsh-quick-ask: A ChatGPT-Style Sidebar Conversation for DSH

`dsh-quick-ask` is a client-side plugin for DeepSeek Harness that uses a floating sidebar in the Web GUI to let users handle small tasks in parallel without disrupting the main conversation. The plugin supports independent sessions, topic-aware context, streaming text, and a purely client-side design. Users can install it via a command and, while a main task is running, use the sidebar to quickly ask context-aware questions or start new topics.