nexu-io/open-design ? reverse-engineered prompt

I want a local-first design tool that works sort of like Anthropic’s Claude Design but lets me use my own AI agent (like Claude, Copilot, or other coding AIs) instead of being locked into one provider. I want to create things like pitch decks, prototypes, posters, or app mockups by just typing what I need. It should help me decide on the look and feel, ask questions interactively, and build the whole project folder for me, picking from lots of brand-style design systems and templates. I want to preview my design safely in the browser, and then export the result as HTML, PDF, or PowerPoint. I should be able to run it on my own machine or deploy it to the web if I want. Make sure it’s open source and keeps my data local by default. If you’re not sure about some details, feel free to look up current docs online as you go.