/** * Callout's static presentational classes for its wrapper — the single source of * truth for both `src/tools/callout/dom-builder.ts` and the view emitter. * * NOTE: these do NOT vary with `data.color`. Callout colours are applied as * inline styles / data attributes by the shared block-colour helper, not as * classes, so one static list covers every colour. * * `EMOJI_BUTTON_STYLES` stays in the tool — it styles a real `