fix(ui): let ConfirmButton's dialog wear the destructive style

ConfirmButton took a `destructive` prop and dropped it on the way to its
dialog, so every delete, revoke and remove built on it confirmed with a
neutral primary button while ConfirmDialog confirmed the same kind of act
in red. The prop is forwarded now, and the call sites whose act takes
something away pass it. A guard holds every confirmation whose slot names
a destroying act to the destructive style; resets stay neutral.

src/components/settings/coach-memory-section.tsx

@@ -228,6 +228,7 @@ function FactRow({
                 accessible name and the confirmation carry the words. */}
             <ConfirmButton
               slot="settings-coach-memory-forget"
+              destructive
               variant="ghost"
               size="icon"
               className="size-11 sm:size-9"