MarketPlacePlus

Fixed:

• Item duplication bug after server restarts
• Players able to claim items multiple times
• Database and memory synchronization issues
• Race conditions in collection system
• Backwards logic in database verification
• Duplicate checking only working for 5 seconds
• Batch item saves failing without rollback
• Thread safety issues in collection GUI
• Items added to memory before database confirmation

Improved:

• Transaction safety for all database operations
• Duplicate detection now works across all methods
• Database is now single source of truth
• Better error logging for sync issues