QasimWani/LeetHub — reverse-engineered prompt

Build me a browser extension like LeetHub that connects my GitHub account and automatically saves my LeetCode solutions to a repo once I pass all the tests on a problem.

I want the setup to feel simple for a normal user. When they open the extension, they should be able to authorize with GitHub, pick an existing repo or create a new one, and then just start solving problems. The repo should be private by default. After that, the extension should detect accepted LeetCode submissions and push the solution code to GitHub without making the user do anything manually. It would also be nice if the popup shows basic progress so people can quickly see what has been synced.

Please make it feel polished, with a welcome or onboarding screen and a clean popup UI. Keep it focused on LeetCode and GitHub syncing, not extra features. If anything changed recently, look up the current browser extension and GitHub auth docs online and make it work end to end.