I need a web platform that lets players of the Roblox game “Grow a Garden” trade their in-game pets and items with confidence. The core flow should feel as easy as Roblox’s native trading but live on an external site I can manage. Essential features • Simple item-for-item exchanges that instantly update both users’ inventories once each side confirms. • A timed auction system where players list pets, set starting bids, and let others compete until the timer ends, automatically awarding the winner and releasing the item. • Persistent trade history so every user can review past swaps, bids, dates, and counterparties—crucial for transparency and dispute resolution. • Integrated payments backing optional real-money trades: card, crypto, PayPal, and Payoneer. Funds should escrow until the successful transfer of the virtual item, then release automatically. Your job is to build the full site—front-end, back-end, database, and secure payment workflows—then hand over clean, documented code, deployment instructions, and a short demo video proving live trades, auctions, and payment flow all work end-to-end.