This actually looks good and uses the established Iroh.

Nice idea with the browser link to share with devices that dont have flipflop on the same LAN. This would be a killer if this would also work via internet! Not sure if Iroh can run in the browser though.

This is a pretty good idea, it didn't occur to me, I'll try to implement it.

I never tried Iroh in the browser, but supposedly it works (by always using a relay).