Label studio code walkthrough

Label studio is a web based tool that helps individuals label their dataset. The frontend is react based and the backend and other processing is python based. My team needs detailed understanding of the whole code base, including frontend as well as backed and how both communicate with each other. Here are the code bases from GitHub:

Label studio: https://github.com/heartexlabs/label-studio
Label studio front-end: https://github.com/heartexlabs/label-studio-frontend