{
  "mode": "built-in imagegen",
  "prompt": "Use case: lighting-weather / architectural visualization refinement. Edit this image into a beautifully photorealistic architectural interior rendering for a contemporary sculpture gallery website. The reference is our actual interactive Three.js gallery model; geometric agreement with it is essential. KEEP EXACTLY this camera framing and room layout, the large black framed window on the left wall, the skylight beams, three sculpture positions and their silhouettes, low pale stone plinths, and single oak bench in the foreground right. Do not add, remove, replace or redesign any artwork. Left sculpture is a broad closed silver ribbon loop, center sculpture is a folding intertwined silver ribbon figure-eight, right sculpture is a slim inward silver teardrop loop. Improve only realistic material response, fine surface texture, indirect natural daylight and subtle grounded contact shadows: lime plaster with fine grain, honed large-format pale grey concrete floor, real brushed aluminum reflections on the sculptures, visible polished bevels, oak wood grain on the bench. Cinematic but quiet professional gallery installation photograph at standing eye level, neutral white balance, sophisticated soft skylight and gentle daylight from the left window. The geometry must remain recognizable as the same three digital sculptures. No people, no extra paintings, no plants, no extra furniture, no overexposure, no colored lighting, no typography, no UI controls, no watermarks. Preserve aspect ratio and composition. High-end realistic material rendering with detailed but restrained contrast, not a flat CAD preview."
}