refactor(core): [CORE-23] complete keyboard controls and focus lifecycle

packages/artplayer/dist/language.cts

@@ -0,0 +1,5 @@
+import type { I18n } from './i18n.js'
+
+declare const language: NonNullable<I18n['en']>
+// eslint-disable-next-line no-restricted-syntax -- Preserve the language object's CommonJS value export.
+export = language