dsh-agent-team-room: Adding Native Session Collaboration Rooms to DSH

dsh-agent-team-room is a DSH plugin (v0.6.0, MIT license) maintained by ishuowang. It enables multiple independently running Sessions to collaborate within a Leader-authorized collaborative boundary, without merging their respective contexts and lifecycle. The plugin does not provide built-in roles, task boards, or shared transcript data. Core functionalities include managing rooms via the native DSH web interface, supporting Direct Message and Broadcast routing, recording bounded coordination metadata, and allowing member selection using the @ symbol in the input box. Users need Node.js 22.19+ and DeepSeek Harness 0.1.0-rc.6, and can install via GitHub commands.