feat: ludo — 10 major visual enhancements for premium board game feel

1. Rich board background with radial gradient texture (warm parchment)
2. Center triangles with radial gradient glow + white diamond center
3. 3D pawns with gradient bodies, specular highlights, drop shadows
4. Safe squares with radial glow + shadowed gold stars
5. Home columns with gradient cells + directional arrows
6. Home zones with linear gradient fill + corner dot decorations
7. Animated turn indicator arrow on active player panel + glow name
8. Ambient corner glow showing current player's color on board
9. Decorated dice area with gold accent, gradient background, radial glow
10. Embossed board frame with wood-tone border + inner gold accent

Also: roll button pulses when available, panels have shadow glow on active
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>