Ah ok yes I wanted any bot to be able to do this with only some "cheating" on my side, but I guess I got the answer I didn't want.

However these sentries are created as func_breakable:s (although later renamed to my custom "sentry"). Some bots fire at func_breakable:s, don't they, like windows and boxes around map. Realbots however Ive seen only fire at them when they are really close enough and I don't think I ever saw them fire at my stuff. Maybe because their classnames are changed?

Hmm I think editing Realbot's source would have to be another later project for me. It would be nice though if there were some kind of unified interface to bots in general, like a scripting engine for them so they can be controlled by 3rd parties without actually modifying their sources.