This is just a simple suggestion to improve UX. Stored items in all storage buildings (warehouse, stockyard, cart, etc.) are already divided into categories.
Taking advantage of that, perhaps you could put a “Select/Deselect All” check box per category. That way, users are able to easily indicate which items should be stored or not.
This is only a suggestion, because I had to unselect all food items one by one from the storehouse. It’s just that some villagers store perishable goods (like food) into the storehouse (which I presume make the food spoil faster compared to the root cellar).
In the same way, I also had to unselect some items in the stock yard to make sure it’s stored in another stockyard near the area that uses it a lot.