Shelf Stocker Improvements

• Shelf stockers now prioritize placing full boxes on available storage racks before returning them to their previous location.
• If all storage racks are full, shelf stockers will place the box in a suitable available location.
• Fixed an issue that could cause shelf stockers to become stuck.
• Fixed an issue that prevented shelf stockers from passing through the door between the shop and the storage area.

Bug Fixes

• Fixed a customer-related issue that could prevent the day from ending in some cases.