All exercise pages now use useNativeLanguage() hook:
- Buttons show text in user's native language (Richtig→Dogru, etc.)
- Instructions translated (Geschafft→Bitti, Nochmal→Tekrar, etc.)
- wordInNative() available for vocab translations (needs data)
Pages updated: flashcards, quiz, type, listen, match, pronounce, story.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>