- Russian fields on Mineral model (name_ru, description_ru, history_ru, etc.)
- scrape_minerals_ru management command fetches from Russian Wikipedia via langlinks
- EN/RU toggle in header, saved to localStorage
- Speaker button next to mineral name uses Web Speech API
- Section headers and labels translated
- Russian Wikipedia link in footer when in RU mode
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
