objective enhance the realism of the attached architectural render while strictly preserving the original architecture geometry proportions and design materials improve all material textures to ultra realistic quality refine pbr properties such as roughness reflectivity bump normal maps and subtle imperfections materials should look physically accurate with realistic wear depth and light interaction vegetation upgrade grass trees shrubs and plants to highly realistic vegetation use natural variation in color density height and scale avoid repetition patterns grass should appear lush and organic with realistic shadows and translucency lighting improve global illumination for a natural and balanced lighting setup use realistic sun positioning soft shadows and accurate light bounce avoid overexposure interior and exterior lighting should feel physically correct sky environment replace the sky with a high quality hdri sky use realistic clouds natural atmospheric depth and correct horizon lighting that matches the sun direction rendering style photorealistic architectural visualization cinematic quality real world scale natural color grading high dynamic range sharp details professional archviz output important do not alter the architectural design layout dimensions camera angle or composition the goal is material lighting vegetation and atmosphere enhancement only