It occurs to me that we have slightly differing notions of 'game state' here. I would say that opening a trivial door, for example, which leads to nothing, and doesn't change the fiction in any real way is, at best, an utterly trivial change. For practical purposes, working from the narrative fictional positioning perspective which is how I normally think of these games, it isn't really a change at all. In, say, 1e AD&D it might accrue some minor significance as some resources and a wandering monster check might take place. Even 2e lacks these processes and its ethos would fairly say "just get on with it."
So, you see 'agency' here, but I see nothing. Even if the door HAS significance, how it is opened is FAIRLY trivial and doesn't involve any real agency, given that the significance is the same no matter how it happens.