The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
从零写一个能活下来的 AI Agent：15 课可跑代码，机制从真实产品 Reina 移植 | Build a coding agent from scratch — how Claude Code / Codex / Cursor actually work under the hood. 15 runnable lessons, zero deps.