Store app addon

Changelog — Golden Market v0.5

🟨 Version 0.5

Added

• 📱 Added the Golden Market Phone system.
• 🛒 Added the BUY marketplace system.
• 💰 Added the SELL marketplace system.
• 🪙 Added Golden Coin as the marketplace currency.
• 📦 Added item stock limits.
• 🔢 Added quantity selection for purchases and sales.
• ✅ Added purchase and sale confirmation screens.
• 🎒 Added inventory and item availability checks.
• 💵 Added automatic 70% sell-price calculation.
• 🪙 Added smart Golden Coin stacking when receiving currency.
• 🎨 Added custom UI icons for BUY, SELL, CONFIRM, and CANCEL.
• 🧱 Added support for multiple resources, building materials, food, and utility items.

Economy

• Each marketplace item now has an individual buy price and stock limit.
• Selling prices are automatically calculated from the item's buy price.
• Purchases reduce available marketplace stock.
• Players receive Golden Coins when successfully selling supported items.

Improvements

• Improved transaction validation.
• Added protection against invalid quantities.
• Added inventory capacity checks before purchases.
• Improved Golden Coin inventory management.
• Added transaction success and error feedback.

Notes

Version 0.5 establishes the core Golden Market economy and marketplace system.

More advanced features such as automatic restocking, dynamic pricing, and supply & demand are planned for future updates.