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  "layer_names": [
    "relu1_1",
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    "relu3_1",
    "relu4_1"
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  "weights": "[local path omitted] vgg19-dcbb9e9d.pth",
  "encoder": "torchvision VGG19 IMAGENET1K_V1",
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  "limits": [
    "VGG Gram is a color/content-sensitive proxy, not brushstroke fidelity, disentanglement, or generalization rate.",
    "One image per reference label; similar references and repeated B/A/seed make cases correlated.",
    "Historical generation inputs were square-stretched; references now use original aspect ratio and center crop.",
    "Rank and positive counts concern only this fixed reference pool, not style classification accuracy."
  ]
}