marwincn/auto-group-tabs ? reverse-engineered prompt

Build me a Chrome extension that automatically groups tabs for me, so I don’t have to manage tab groups by hand anymore.

It should watch for new tabs opening and for a tab’s URL changing, then move those tabs into the right group automatically. I want the grouping rules to be customizable, for example grouping by domain or by keywords in the tab title. Keep it simple and easy to use, with a basic settings page where I can turn the feature on and adjust the rules. If you need to check anything about the current Chrome extension APIs or best practices, look up the latest docs online.

Make it work as a normal browser extension I can load in developer mode, and include whatever build setup is needed so I can package it from the source.