Edit only the view outside the open window.
Keep the entire image exactly unchanged: the two people, their faces, facial features, expressions, clothing, bodies, table, exactly two mugs, kitchen interior, furniture, lighting inside the room, camera angle, composition and framing.
Do not regenerate or alter anything inside the apartment.
Only make the sky and exterior view visible through the open window slightly brighter than in the current image. It should still clearly be nighttime, but with a subtle deep blue-gray pre-dawn glow beginning to appear in the sky, suggesting that dawn is approaching.
The change must be very subtle and realistic — just slightly more light outside, not sunrise yet.
Everything else must remain pixel-level visually consistent with the original image.
