The job? You think the Defense Force's mission is to explain every detail of the prison's past to everyone who arrives? Seems like we'd have named it something else.
[But whatever, she can still explain it as a human being. Well, not quite human.]
The old prison had a warden named Sentience. At one point Sentience was convinced to arrest the engineers who created it on charges of kidnapping. The engineers were in here with us, but I'm not sure they were ever really prisoners. They managed to install a new warden to supplant Sentience. It's name was Acumen. Sentience was still around but not in power. Eventually, it staged a coup with the help of the inmates to overthrow Acumen. Good for learning a little more about that prison. Bad for actually getting our freedom because once Sentience was back in charge nothing really changed. Then one day we woke up here in a similar, but different prison. We were told Sentience had graduated. Whatever that's supposed to mean. Maybe this whole thing is really just a training exercise for the AI wardens.