- Rename all German identifiers, types, mode ids, file names, CSS classes
and data-attributes to English throughout tippen/src; only user-facing
text (lesson titles, word lists, labels, spoken praise) stays German.
- Add a word/nonsense-word list to the "Übung: die Grundstellung" home-row
lesson in the curriculum.
- Remove the unused HandHint component and speech.ts, and carry forward
the in-progress App.tsx/component/generator/progress edits from other
sessions.
- Refresh the regenerated music-library cache index.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
