This is really awesome. I've long wanted something like this, especially the local first with p2p sync. Why did you choose nostr over direct p2p with iroh which has dumb relay as fallback?
Agree with your assessment, I think after models reached around Opus 4.5 level, its been almost indistinguishable for most tasks. Intelligence has been commoditized, what's important now is the workflows, prompting, and context management. And that is unique to each model.