{
  "slug": "rag-evidence-chain",
  "generator": "ImageGen",
  "role": "conceptual_cover_not_experimental_data",
  "prior_approved_cover": {
    "slug": "rag-evidence-chain",
    "role": "conceptual-cover",
    "generator": "OpenAI built-in image_gen",
    "ai_generated": true,
    "alt": "金线穿过半透明资料片，汇聚到玻璃方块中的检索证据概念插画。",
    "original_sha256": "8e25ae68976defbe7df9c6a0ba18b2447dcd6d30caa4d3867b4f73423dc8aff5",
    "prompt": "Create a premium science journal editorial cover art, landscape 3:2, edge-to-edge artwork, NO text, letters, numbers, logos, borders or watermarks. Museum-quality sculptural still-life photographed with a large-format lens; physically believable materials and light, masterful composition, restrained warm gold details with rich dark ink accents. Sophisticated contemporary research magazine, tactile cinematic art, strong silhouette readable at thumbnail size. Conceptual illustration openly labeled by publisher, not an experimental visualization. Avoid generic AI brains, robots, microchips, neon cyberpunk, stock-tech clichés, flat infographic boxes, glossy plastic, rainbow gradients. Topic: retrieval augmented generation and source evidence. In a deep petrol-green library-like abstract gallery, many translucent vellum and glass sheets float as a graceful arch; a single fine gold ribbon travels through the sheets, collecting three warm luminous fragments into a sharply focused crystal block in the foreground. No visible writing or books with fake letters. The sheets are layered sculptural panels, visually implying evidence fragments. Stunning contrasting light, emerald glass, warm ivory, copper gold, detailed light refraction, shallow depth of field, elegant and unmistakable composition.",
    "files": [
      {
        "file": "assets/covers/rag-evidence-chain.png",
        "width": 1280,
        "height": 853,
        "bytes": 1560956,
        "sha256": "78b44e5d78f9947ab1af23ef0ab875a45e34be2313ae4be1587f747e1fb3ea55"
      },
      {
        "file": "assets/covers/rag-evidence-chain-480.png",
        "width": 480,
        "height": 320,
        "bytes": 267394,
        "sha256": "122398ffdcd1de0fbfa763d3942592b0c84d019fe180deb702401c2a82135e3d"
      }
    ]
  },
  "sourceSHA256": "78b44e5d78f9947ab1af23ef0ab875a45e34be2313ae4be1587f747e1fb3ea55",
  "derivativeSHA256": "78dbf7a0b12a8421770a885a4cdb4fa2d90cc94c4263b78fdabd9948a68e0be1"
}