Tap right Option in Alacritty or Ghostty to toggle Claude Code voice dictation; speaker output mutes while recording so the mic doesn't catch speaker audio. Escape cancels without submitting.
A bare modifier tap never reaches a terminal app, and voice:pushToTalk takes a single keystroke,
so Karabiner converts a solo right-Option tap to Option+z.
Option-as-Alt terminal configuration sends that as Alt+z, which Claude Code has bound to
voice:pushToTalk in tap mode — the binding is opt+z because Claude Code sees only the Alt+z