- Add high-resolution `catancards.png` and `catantiles.png` assets
- Replace hexagon background colors with textured tile images from spritesheet
- Redesign resource hand with card-style UI (dark background, artwork, colored borders)
- Introduce a new Bank Panel on the right side showing resource and dev card counts
- Implement resource collection animations (chit pulse, particle effects, card flight)
- Export `HEX_W` constant for use in tile sizing calculations
