Oh interesting, this is very cool. At first I thought it was just focus-follows-mouse but it's more interesting. You have certain keywords trigger "add to prompt". Ignoring the voice functionality (which is admittedly crucial currently because other inputs currently take over focus), I've often wanted to just have a continuous conversation with the LLM as I 'point and click' (or tab over and select) at various things. Might be neat to have text input focus continue to go to the LLM where I'm typing text etc.
Sometimes I go to a different page to take a screenshot and other times I'm browsing for a file, and other times I'm highlighting some log lines. Cursor did this well, with selecting text in the terminal auto-focusing the Cursor agent textbox so you could talk to the agent and then select some text and you didn't have to re-select the original agent textbox again. The agent is a top-level function in that system not "just another app I have to switch to" to take my context with.
I have some small amount of bias because I've always felt input-constrained on computers. I have to move my hands to go places and that's exasperating. I've tried head tracking, had a vim pedal for a while, and used tiling WMs, and things like this to aid but while my vim-fu is pretty good and I function inside things very well with it, my cross-application interface isn't.
In the end, perhaps we all have our home offices with our Apple Vision Pros and we talk to them like this to maneouvre faster through our machines and get our ideas into them.
Cool research. I wonder what we'll end up with.