- Created boxes_crates table with 8-digit auto-generated box numbers
- Added manage_boxes route and full CRUD operations
- Implemented box status tracking (open/closed)
- Added location assignment functionality
- Integrated QZ Tray printing with barcode labels
- Created manage_boxes.html with table, preview, and print features
- Added 'Manage Boxes/Crates' card to warehouse main page
- Boxes can be created without location and assigned later
- Includes delete functionality for admin/management roles
- Added box statistics display
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