pull request
Like slipping a draft to your team for sign-off, a pull request asks to add your changes into the main code.
On GitHub, code lives in a repository, a shared folder for code, and you work on a branch, a copy of that code where you make changes safely.
A pull request groups those changes and starts a review. Teammates comment, CodeRabbit suggests fixes, and automatic checks try to build and run the app so problems are caught early.
In practice: push your branch to GitHub, open a pull request, discuss and tweak until approved, then merge, which means add your changes into the main copy.