Probably, you deactivated security before using the terminal in the Captain's Cabin. And if so, you probably missed the trap scene and related puzzle. AI is one form of interaction with the Captain's Terminal. It starts with command "RUN AI".
I think I might have missed security. Smartlet tells me security is east of the north-east corner. When I transfer my map from little bits of paper to a big piece of paper, I can see that there is a pattern and I am possibly missing one room where security should be. Smartlet also tells me a security code and security key for security. The latter looks like a regular expression. I didn't use these. I opened the grille and found the orange key, but I don't think I used it anywhere. Should I have used it at the north-east corner? There was no exit indicated to the east.
Yeah, security module is hidden and locked with orange key. Thats the idea. In the original way a player should not find a security module just by inspecting the station. Probably security module should not be mentioned in the smartlet. But then it become not so logical. I have to think what I can do with this.