I think we need a new area of study around UI/Agent connection. It can kinda be done with tools, but I'd we need much deeper primitives to allow the UI to inform the Agent and vice-versa. Right now we've just given up, replacing the UI with an Agent message view, but I think that's just because nobody is thinking about how the two can compliment each other

I've been playing around with using a hidden markov model informed by a UI state event stream, with the end state fed into the Agent as a hint on each message turn. Then the Agent can make a tool call to add events to the HMM. This has been really interesting, but I haven't struck the right balance to make it actually feel good for the user yet

It's hard to say what is needed now, vs needed in a few years.

For example, many rumors say SSI has solved learning and retaining state. That would significantly change AI requirements.