One day, I will meet a line manager who understands this. Thank you for your kind words on the job; it was 9 months of pretty much this thing. "We can't make the changes you requested in week one, and whenever we discover you adapting a task independently we will require you to stop. Now, shall we discuss some goals for improving your wellbeing and work performance? But not the things you were already doing". It was in a very large old library, and the loss of the books and the building is raw indeed.

And on this point, specifically, ugh.

Libraries can be wonderful places, and they can be incredibly dysfunctional places, and sometimes both at once (amazing collection, but the people....)

I'm so sorry, and here for further venting if it's helpful, because I've been in similar positions. (My last job ended much that way, though it was not at all a gorgeous building, being mid-70s weirdness.)