This looks interesting - looking forward to see where it heads!

An entirely nitpicky nitpick: The demo GIF rubs me the wrong way. I know, you want to show of all the features quickly, but what I see when I watch it is a reviewer who doesn't actually read the code, just clicks "reviewed" everywhere, and throws in a slightly patronizing "Good job!"

If you have a moment, you might want to think about a flow that's better at demonstrating how it improves code reviews delivered.

But, as I said, nitpick. There's a lot of potential here!