Instant sync, no refresh button
Your partner adds eggs at the supermarket entrance. You’re already at the dairy aisle. You see the eggs show up in under a second, mark the ones you’re grabbing, and neither of you comes home without the eggs. That’s the whole feature, and it’s surprisingly rare done well.
Kyrio syncs over WebSockets when you’re online and queues locally when you’re not. Walk into a basement with bad signal; the list catches up when you walk out.
