That's a great demo, I really like how you built up the layers as you went through it. It's really easy to see how you can keep composing and building up more and more impressive apps using these building blocks. My main question would be around authentication, you mention it both on the website and in the video but I'm not sure how you're solving that?

Also how generic is your ID-based sync mechanism? Can you attach it to any react component and sync whatever it has in useState hooks? Or is there magic going on in the prebuilt components that you demoed?