Graphical terminal improvements.

It makes using programs who like to refresh a ton much more tollerable
when I'm not in Emacs; I suspect others will like them too.

internal/app/event_loop.go

@@ -333,6 +333,17 @@ func processEventsWithAttributes(
 			}
 			event, _ := state.pending.terminalDeletion.take()
 			speak(event)
+		case <-state.pending.terminalRepaint.ready:
+			if focusGate.Locked() {
+				state.pending.clear()
+				continue
+			}
+			event, _ := state.pending.terminalRepaint.take()
+			if is_trivial_terminal_repaint(event) {
+				logger.Debug("dropped trivial terminal repaint fragment", "role", event.Source.Role)
+				continue
+			}
+			speak(event)
 		case command := <-reviewRequests:
 			switch command {
 			case input.PresentCurrentLine, input.SpellCurrentLine, input.PhoneticCurrentLine: