Fill up the inventory with what? I'm not sure I follow with what you're requesting.
It currently opens the forge creates one unfinished smithing item and clicks anvil and repeats the process each time. Would probably be much more efficient if it could have an option to open forge create unfinished smithing items until full invent and then hit anvil and just keep reheating if necessary and just needs to move around a little bit to stay logged in and then bank and repeat or just repeat if its a stackable item. Hope that makes more sense