bff0e6f861
🌍 Translation & Localization Improvements: - Added missing translation keys for UI elements (ai-teacher, scientific-explanation, etc.) - Replaced all hardcoded 'AI Teacher' labels with translation lookups - Updated input placeholders and button text to use translations - Fixed answer reveal section to use proper translation keys - Added fallback messages and thinking prompts in both EN/DE 🔧 Technical Changes: - Updated script-new.js: 7+ instances of hardcoded text → translation keys - Enhanced translations.js: Added 7 new translation keys with EN/DE versions - Ensured all user-facing text uses translation system - Maintained emoji consistency across languages ✅ Verification: - No compilation errors in JavaScript files - All translation keys exist in both English and German - No remaining hardcoded user-facing strings - Backend service running correctly with systemd - Language switching functionality preserved 🎯 Result: Complete localization - no language mixing, all UI text properly translated