Gehry 19w 18d 17h Left Twist Cube

Generate the image described by this JSON specification. Obey the
input_images role mapping and cross_cell_consistency exactly.

{
  "task": "ONE composite 2x2 grid image - a clean studio \"silo\" turntable series of the SAME product.",
  "subject": "Gehry 19w 18d 17h Left Twist Cube",
  "input_images": {
    "image_1": "A 2x2 grid of rough 3D turntable renders, same cell layout as the output. CAMERA & GEOMETRY AUTHORITY ONLY: each cell defines the camera angle, which face points at the camera, orientation, framing and perspective for the matching output cell. IGNORE its colours, materials, lighting and low-poly / render artifacts.",
    "images_2_plus": "Real photographs of the actual product - APPEARANCE & STRUCTURE GROUND TRUTH (colours, materials, finishes, proportions, joinery, hardware, distinctive details). The product must look IDENTICAL to these in every cell."
  },
  "cell_mapping": [
    "row 1, col 1 => 0 deg turntable view",
    "row 1, col 2 => 90 deg turntable view",
    "row 2, col 1 => 180 deg turntable view",
    "row 2, col 2 => 270 deg turntable view"
  ],
  "cross_cell_consistency": "CRITICAL: every cell shows the exact same physical object - identical materials, colour, finish, proportions, lighting, exposure and scale. ONLY the camera angle changes between cells. Zero appearance drift between cells.",
  "style": "Ultra-high-end commercial studio product photography, sharp focus.",
  "lighting": {
    "type": "High-key, soft, uniform global illumination, identical in every cell",
    "shadow": "A single soft neutral contact shadow directly beneath the subject in each cell"
  },
  "background": "ALWAYS PURE FLAT WHITE #FFFFFF AND ONLY WHITE in every cell. NEVER any other colour, tint, gradient, vignette, floor, ground, surface, walls, scene, props or reflections. Only the subject + its contact shadow.",
  "layout_rules": "Same 2x2 cell layout as the input grid; cells edge-to-edge. NO BORDERS, NO FRAMES, NO OUTLINES around cells or the subject; NO LINES OR DIVIDERS between cells; no gutters, padding or margins; no numbers, captions or text anywhere; no logos, brand marks, labels or watermarks on the product.",
  "output": "Output ONLY the composite grid image."
}