- Reorganise card PNGs into assets/cards/faces/{classic,dark}/ and
assets/cards/backs/{classic,dark}/
- Rasterise dark SVG theme alongside existing classic set
- Add "Dark / Classic" toggle button in the game HUD; persists to
localStorage as fs_theme (defaults to classic)
- Preload both themes on page load so switching is instant
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Rasterized all 52 classic SVGs via rsvg-convert at 256×384. The web
game was showing dark-background cards; it now shows the traditional
white card face style.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>