- Add new image assets for Gold Rush slot game (bandit, dynamite, pickaxe, saloon, sheriff, wagon)
- Add new image assets for Sugar Spin slot game (bear, berry, cane, chocolate, jelly, lollipop, mint, rainbow)
- Add cabinet and card artwork for all slot games (Liberty Belle, Fruit Frenzy,Lucky Sevens,Sugar Spin)
- Update slots-artwork.json with paths for all new and existing slot assets
- Modernize Mastermind tutorial language with casual/colloquial tone