A locale field that lists every language under its own name — 简体中文 beside Chinese (Simplified) — searchable by endonym, English name or BCP 47 tag, with RTL rows rendered in their own direction, optional translation completeness and a browser-language matching ladder.
npx shadcn@latest add @zyeon/language-pickerZyeon UI limits how often it can be asked, and Language Picker hasn't had its turn. Its source will show here once it has.