ShopEnhancement

This mod includes the following core functional adjustments:

1. Card Removal Optimization
- Initial removal cost: 50 Gold, increases by 25 Gold each time.
- Up to 3 cards can be removed per shop visit, with increasing costs.

2. Shop Refresh Mechanism
- Spend 40 Gold to refresh all shop cards, relics, and potions.
- Maximum 3 refreshes per shop.

3. Economic Compensation Mechanism
- Leave shop without purchasing any items: receive 15 Gold.
- Skip card reward after winning a battle: receive 15 Gold.

4. Cross-Class Cards
- Shop cards have a 20% chance to be replaced by cards from other classes.

5. Full Content Unlock
- Automatically unlock all cards, relics, potions, and all characters when entering the main menu.

6. Sell Mode
- In shop, enable Sell Mode then right-click to sell Relics or Potions.
- Relics: sell for 35% of merchant price, minimum 30 Gold. Special relics have fixed base prices.
- Potions: sell for 25% of merchant price, minimum 15 Gold.

7. Gift Mode (Multiplayer Only)
- Buy and gift cards to other players in multiplayer.
- Enable Gift Mode in shop, select target player, then purchase to send card to their deck.
- Recipient receives notification and card is added to deck.

https://github.com/moyudamowang/Shop-Enhancement-STS2