I think the inspector is telling you that you have met vapor barrier and insulation requirements.
If you fill the stud cavity with insulation, you have just built a very cost effective high performance insulated wall.
That is what I have in my basement. with similar temperature swings. Foamed rim joists and the tapped XPS panels
create the vapor barrier, so the insulation is not faced with a plastic moisture barrier.
Are you sure about the poly on both sides of...