Non-DE/EN users (parents) see a guide panel explaining:
- What this page is (vocabulary exercises from teacher)
- How each exercise type works (cards, quiz, listen, speak)
- All text in parent's native language (TR/AR/UK/RU/PL)
German/English users see the original layout without the guide.
This is the single entry point — no need to duplicate explanations
in every exercise sub-page.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
d8771bb509