DeepSeek Harness Picture-in-Picture Chat Plugin

The Picture-in-Picture (PiP) chat plugin for DeepSeek Harness (DSH) is designed to address the efficiency issue of frequent window switching during development. It provides a compact chat interface in a floating window, supporting streaming, session switching, Markdown editing, and keyboard shortcuts, while remaining synchronized with the main window state. It supports multiple languages and dark themes, and includes a fallback to an in-page floating panel. Users can install it via npm for a more focused multitasking experience in supported browsers.