The most simple solution would be to have a Food Container automaticly by magic means sending all the food we pick up at any given time to the camp.
Or better just handle those food items outside of the itemmanagmentressource as like items which never ever be seen in the inventory, only when we filtered direectly for it.
Also at current version the campfoodmanager can not see food in other containers. At least it is in my game atm like that.

Theres a lot of good tools in World of Warcraft for item managment. Maybe suggesting to check some up and replicate the best managment ideas.
Its not that thers a patent on everything, and making things better on the base of older ideas is something humankind is allways striving to do.
So go on and make it so smile