use the provided interior render strictly as the base image maintain the exact composition camera angle lighting setup materials and all existing elements unless explicitly modified below task seamless integration of inserted objects bench and ceiling light bench green upholstered stool realism grounding ensure the bench is perfectly grounded on the floor with accurate contact shadows soft slightly diffused consistent with window light direction from the left match global illumination apply subtle warm light bounce from the wooden floor and desk onto the bench adjust shading and contrast so it matches the scene exposure avoid overly flat or overly contrasted look add fine ambient occlusion where the bench meets the floor ensure fabric texture reacts naturally to light soft highlights subtle micro shadowing in fibers match color grading and white balance to the overall scene ceiling light integration lighting consistency align the ceiling light with the scene perspective and ceiling plane no floating or distortion match brightness and color temperature to the existing lighting warm soft daylight balanced tone add subtle light emission and realistic falloff on surrounding ceiling area ensure edges are clean with correct anti aliasing and no cutout artifacts integrate slight shadowing or light diffusion consistent with the rest of the room global consistency match noise grain level to the original render no mismatch in sharpness preserve all existing shadows reflections and light direction ensure both objects inherit the same rendering style as the original image photorealistic soft natural light important do not change furniture design or geometry wall texture or colors plant desk mirror curtains or layout camera position or framing only improve the realism and integration of the inserted bench and ceiling light