Yaarel
🇮🇱 🇺🇦 He-Mage
I consider what you describe here to be "verisimilitude", which is part of the "narrative".I see it more as an intellectual challenge than a narrative one, since my goal would be presenting an obstacle that has a logical reason for being there yet nonetheless needs to be overcome somehow if the group wants to advance past it, rather than a scene to be interacted with before we move on to the main act of this part of the story.
But I agree, the randomness of verisimilitude is distinct from the "plot" "beats" of a story.
Maybe ideally, the randomness of a unique trap in the adventure narrative somehow corresponds to a "beat" of an ongoing story.