I read this story in a science fiction anthology a few years ago (say ~2008), but I have no idea when it was published. The story revolves around "The Warden," a hologram/AI who was designed to control a prison planet. Here are all the details I remember:
- The prison planet was named after some historical place, possibly the Bastille, and it had a moon whose name was related to this place. I think the moon had a feminine name.
- The inmates had taken over the prison several years ago. A very cruel woman controlled the prison. I think she ran some kind of drug cartel or something.
- The Warden was programmed to keep the prisoners, well, imprisoned, but he was unable to act because the woman possessed a computer virus that would erase him if he acted against her.
- At some point, a young boy crash-lands on the planet. This is significant.
- The planet has a highly poisonous atmosphere.
- Somehow the Warden kills the woman; I believe it involves the atmosphere. He broke a window or something.
- It ends with some big spoiler about how the warden was created.
I've googled as much as I can, but I can't seem to find it. I remember thinking it was a very good story and I'd very much like to read it again.