What is GitHub and what is a repo, and is it only usable through Claude Code?

One member explained Git/GitHub in simple terms: imagine a filing cabinet storing the status of a project, but instead of someone overwriting and deleting all your progress when they make a change, Git preserves version history so you can roll back changes. GitHub is a place to store code and projects with that version history/forking capability. Another member added that this lets people publish reusable tools (like the "superpowers" repo shared in chat) publicly for free — you just point Claude Code at the link and tell it to add/use that repo, and it will pull everything onto your machine. It was also noted that GitHub isn't limited to Claude Code: one member uses GitHub to connect Google AI Studio and Netlify to deploy website changes, making the workflow platform-agnostic since any system can be pointed at the same GitHub repo. The underlying private code repo is separate from what ultimately gets published publicly (e.g., a live website).