DeepSeek Harness is officially here — the company's first Agent product, and you can assemble the entire thing yourself. The package is already live on npm. That public Code Agent benchmark for V4-Flash from earlier? It used Harness's built-in minimalist mode. And this isn't just another Codex-style coding agent. Harness supports project management, long tasks, multi-agent setups, skills, web search, and context management, and it lets you create different "Agent presets." Write code, do research…