MikaStiebitz/Git-Mastery ? reverse-engineered prompt

Build me a fun browser game that teaches Git by letting people actually type real Git commands and watch the repository graph change as they play.

I want it to feel like a game, not a tutorial. Start with simple levels like init, branch, commit, merge, then unlock harder stuff like rebase and bisect. Include a sandbox mode too, where someone can freely experiment without failing a level. Show progress, points, stars, and a few small achievements so it feels rewarding.

Make it work right in the browser with no account needed to play. Save progress locally, and if you can, add an optional login so progress can sync across devices and show a leaderboard. Add a clean, playful interface with a terminal, a visual commit graph, a few themes, and support for multiple languages. If anything needs current docs, look them up online and keep it polished.