Quarantine System
- Auto-quarantine suspicious items based on confidence scores
- GUI manager with sorting/filtering options
- Restore or destroy quarantined items
- /antidupe quarantine [player] command

Async Batch Scanner
- Multi-threaded inventory scanning
- Minimal server performance impact
- /antidupe batchscan [player|all] command

Item Restoration
- Restore quarantined items to players
- Bulk restore options available
- /antidupe restore <player> [itemId|all] command