badges/shields ? reverse-engineered prompt

I want a self hosted Shields style badge service that I can run locally and use like the real site. It should have a web app where I can search or browse badge types, click one, fill in details like repo name, package name, version, coverage, label, color, and style, then copy either the badge image URL or a markdown snippet for my README.

Please make sure the server actually generates the badges and the frontend is wired up so the common examples work from start to finish. It should support custom static badges, and the normal badge image output in SVG, plus raster output if this project already supports that. If there is already a badge generation library in the repo, keep that working cleanly too so it can be used on its own.

I should be able to install it, start it locally, open it in a browser, and have the main tests pass. Look up the current docs online if you need to.