enhance this architectural visualization for photorealistic quality output strict geometry lock do not modify building geometry structure and massing must remain 100 identical facade material colors textures and finishes are frozen preserve exact hues saturation and material identity concrete glass cladding fasade brick etc window placement proportions and reflections must stay unchanged all hardscape elements paths pavement streets remain as is all existing vegetation in the model is locked preserve every tree shrub and planted area exactly as modeled position species character size and color vegetation limited intervention only existing greenery must not be moved replaced reshaped or recolored you may only add low growing understory shrubs in currently bare ground areas provided they do not obscure any facade element path edge or existing planting new shrubs must complement existing vegetation in color tone and density if in doubt do not add scene balance takes priority over supplementing greenery enhancement scope apply only to 1 sky atmospheric conditions replace or upgrade sky to dramatic golden hour blue hour overcast choose one clear midday sunset stormy cinematic add atmospheric haze and depth cues in the background match lighting direction consistently across facade and ground shadows 2 lighting quality improve ambient occlusion and shadow softness enhance specular highlights on glazing and metallic surfaces ensure sky ibl image based lighting coherence with facade and site 3 overall atmosphere boost photorealistic render quality sss on foliage atmospheric scattering add subtle lens characteristics slight vignette natural chromatic feel output intent high end architectural competition visualization all design decisions are final only sky light and atmosphere are variables