{
  "tool": "Built-in image generation",
  "imageFile": "montana-illustration.png",
  "createdDate": "2026-09-07",
  "referenceRole": "Newly authored GLB three-quarter render used as visual reference",
  "referenceFile": "montana-model-three-quarter.png",
  "historicalStatus": "Supplemental interpretive artwork, not documentary evidence or an exact GLB render",
  "generationPrompt": "Create one highly detailed realistic 3D historical reconstruction illustration, wide landscape format. Use the attached newly authored 3D model render as the controlling reference for hull proportions, configuration, mast/funnel count, cabin placement and rig; preserve its overall silhouette. Montana, the 236 by 36 foot wooden Great Lakes package freighter. Selected photographed early package-freight career before lumber conversion: long continuous cream low deckhouse, curved external timber arches on both sides, tall foremast immediately abaft forward wheelhouse and much shorter stern mast, one aft black funnel. No sails. Show the complete vessel from the same elevated three-quarter bow angle, isolated on a warm ivory studio background with subtle grounded shadow, refined physically based lighting, realistic restrained timber/metal/rope textures and finely resolved fittings. Clean museum reconstruction presentation, no dramatic scene, no text, watermark, flag markings or people. Do not invent additional major equipment or ornament. This is interpretive artwork, not an archival photograph. Keep the reference configuration while improving material richness and visual realism.",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "clean",
    "imageSha256": "4de892b227854919d9f306692ed5b286b14db44685fc2d1a099f9b38634bbd34",
    "observations": "Four native-pixel crops inspected. No weapons, garbled lettering, material mismatch, added masts, disconnected fittings or modern equipment observed. Interpretive details and background scenery are not documentary evidence."
  },
  "imageSha256": "4de892b227854919d9f306692ed5b286b14db44685fc2d1a099f9b38634bbd34"
}