Fission-AI/openspec ? reverse-engineered prompt

Build me an OpenSpec style tool for planning work with AI coding assistants before code gets written. I want a Node based command line app I can install globally, run inside any repo, and have it set up an openspec area where every change gets its own proposal, specs, design notes, and task list. It should feel lightweight and iterative, not overly process heavy, and it should work well on existing projects too, not just brand new ones.

I also want the chat driven workflow to feel natural, with slash commands like /opsx:explore to think through an idea, /opsx:propose to create the change plan, /opsx:apply to carry out the tasks, and /opsx:archive to close things out and keep the history organized. Please make the docs clear, include examples and tests, and make it usable across different AI coding tools. If it belongs here, include the newer artifact guided workflow, and the shared store concept for planning across multiple repos. Look up current docs online if you need to.