Some basic tile changes:

• Protein Slab: 2 → 3 feed
• Palate CLeanser: 1 → 2 feed, empty neighbor bonus 1 → 2
• Cheese: +2 → +1 feed per turn
• Heat lamp: rarity UNCOMMON → RARE
• Shop prices adjusted across most tiles

Relics:

• Added relic system foundation (global run modifiers)
• First relic: Service Bell (tiles in row 2 gain +2 feed)
• Not yet in game or run progression -- will add to game next!

UI system overhauled (code restructure).