{
  "tool": "Built-in image generation",
  "imageFile": "galena-illustration.png",
  "createdDate": "2026-09-07",
  "referenceRole": "Newly authored GLB three-quarter render used as visual reference",
  "referenceFile": "galena-model-three-quarter.png",
  "historicalStatus": "Supplemental interpretive artwork, not documentary evidence or an exact GLB render",
  "generationPrompt": "Use case: historical-scene. Create a polished, detailed maritime reconstruction illustration, landscape 3:2, showing the complete vessel afloat on calm blue-green Lake Huron with distant wooded Michigan shore, soft late afternoon light, realistic timber, rope and canvas textures. The supplied newly authored 3D render controls the silhouette and arrangement. Keep its hull proportions, mast count, funnels, cabins and visible equipment. This is modern interpretive art, not an archival photograph. No text, labels, weapons, invented flags, extra ships or prominent people. No underwater cutaway. Galena, 190 ft wooden screw steamer of 1857–1872. Exactly one tall bare forward working mast with raised gaff, no sails; one black aft smokestack with a modest trail of smoke; long low pale central cabin; small faceted forward pilothouse with low pyramidal roof; prominent pale curved longitudinal support arches on both sides with vertical posts, two narrow bent pipes amidships. Preserve the distinctive arches, cabin height and low profile from the reference. Not USS Galena; no armor, military equipment or paddle wheels. No lumber piled on deck. Full vessel framed with room around bow, stern and mast.",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "clean",
    "imageSha256": "ad7680298ef35b10ba1983746d01d0eaa374d178d54f4b1fd8009cf043cefafb",
    "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": "ad7680298ef35b10ba1983746d01d0eaa374d178d54f4b1fd8009cf043cefafb"
}