- Replace emoji flags with SVG-based country flags
- German flag: Black-Red-Gold (official colors)
- USA flag: Red-White-Blue with stars
- Dynamic flag switching on language change
- Applied to both dashboard and leaderboard
- Database achievements now support English translations
- Extended achievements table with name_en and description_en columns
- Updated API routes to return English translations
- Simplified frontend translation system to use database translations
- Added language selector in top-left corner
- Implemented data attributes for all translatable text
- Created language management system with localStorage persistence
- Updated all JavaScript functions to support both languages
- Added translations for notifications, error messages, and UI elements
- Maintained existing functionality while adding language switching
