dsh-plugin-quick-chat: A Quick Chat Entry for DeepSeek Harness

enteguo maintains a sidebar plugin for DeepSeek Harness that aims to address the issue of interrupting the main conversation flow during development and debugging. The plugin provides a lightweight “Quick Chat” window in the bottom-right corner, supporting streaming output, model switching, context passing, and history management. Data is stored locally and independently, without interfering with the main session. Users can install it using the `dsh plugin` command, making it suitable for developers who frequently need plain-text validation.