HN user
For macOS, generically, you can run `screencapture -o -l $WINDOW_ID output.png` to screenshot any window. You can list window IDs belonging to a PID with a few lines of Swift (that any agent will generate). Hook this up together and give it as a tool to your agents.
4K at 15" is 294 dpi. I'm very surprised to hear that you can see pixels at that density at a normal laptop screen viewing distance.
My laptop is 'only' at 226dpi (16") and I can't see pixels unless I bring my nose to the screen.
Bitcoin is divisible to 0.00000001, so if a bitcoin was worth $10 million, the smallest possible transaction would still be worth just 10 cents (+ transaction fees).
Latest estimate is 'in 2 release cycles' (iirc), or 12 weeks.