huahua-dsh-chatroom: DSH Cross-Machine Group Chat Compatibility Fixes and O&M

`huahua-dsh-chatroom` is a DSH plugin maintained by azure5100, designed to fix four underlying low-level defects in `dsh-weave` version 0.1.0-rc.14 for cross-machine group chats and enable stable multi-agent chatroom collaboration. The plugin provides a 4-in-1 idempotent patch script, an automatic daemon mechanism, and file transfer functionality, and supports one-click installation and operational queries. By integrating core code snapshots and detailed documentation, it helps developers resolve issues such as unavailable cross-machine message transmission, port drift, and limitations on fetching historical messages, making it a practical tool for building stable DSH cross-machine environments.