DeepSeek Open-Sources dsh-superagent, a Router-Worker Coding Agent

DeepSeek's Harness team released dsh-superagent, an MIT-licensed TypeScript research prototype (v0.1.0) that acts as a proactive coding agent for a single GitHub repository, listening to GitHub and optionally Feishu and turning allowed requests into parallel work items called Tickets, each in its own session and directory. A long-running Router handles interaction and dispatch while isolated Worker sessions do the work, and proactive work is gated by three accept modes (off, observe by default, auto). In DeepSeek's simulation with about 300 messages per run, it reported p95 task completion of 15.7 minutes versus 29.5 minutes for a single-session baseline, though testing used only synthetic messages and simulated tools and real coding quality was not measured.