It's been >5y since I used KDE, but iirc the default terminal there had regexp you could set to trigger any action you wanted. And links were automatically clickable.
I doubt this is helpful, but I tried to find a Linux terminal that was as customizable as iterm2. Konsole was the closest thing I could find. It has a UI to configure many aspects of the terminal. Unfortunately, I'm drawing a blank on triggers at the moment. I still think iterm2 is way better but konsole is really really customizable.
Can anyone running KDE confirm?