Everything else falls away. One focused surface cycles through listening → thinking → speaking, then waits for you. A single close icon returns to the full thread, where the exchange has been saved. Watch it run:
Decisions to settle:
(1) Does every mic tap open this canvas, or keep a quick inline-listen for fast captures too?
(2) Show Mallory’s words as text while she speaks (as shown — great for glance & accessibility), or audio-only and purer?
(3) After she finishes, should it auto-listen for your reply (hands-free back-and-forth) or wait for a tap?
Tell me, and I’ll fold the voice canvas into the guide. This likely reshapes D too — the main chat becomes the place you go to read & type, with voice living here.