On phones (up to 640px, or touch without a mouse) each couplet has one small ⋯ button, shown when the couplet is tapped; a set bookmark or note shows as a tiny glyph on it and keeps it visible. It opens one shared menu (a native popover, light-dismiss, arrow keys): bookmark or remove, note, share, download. Wider screens keep the four icons on hover. Couplets keep room under them on narrow screens, so the tools never sit on the text
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>