- Implemented TranslationCache class with IndexedDB storage
- Cache translations automatically with 30-day expiration
- Added cache management UI in settings modal
- Shows cache count and size
- Toggle to enable/disable caching
- Clear cache button
- Check cache first before API calls (when enabled)
- Automatic cleanup when reaching 1000 entries limit
- Show "(cached)" indicator for cached translations
- Works completely offline after translations are cached
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Adolfo Delorenzo
08791d2fed