{
  "phase": "phase2",
  "best_existing_run": "p2c_resnet18_facecrop",
  "best_existing_auc": 0.9755,
  "decisions": [
    {
      "choice": "input size",
      "decision": "224x224",
      "evidence": "ResNet18 improves from AUC 0.9366 to 0.9660.",
      "confidence": "high"
    },
    {
      "choice": "face crop",
      "decision": "enable",
      "evidence": "Best Phase 2 run is p2c_resnet18_facecrop with AUC 0.9755.",
      "confidence": "medium-high"
    },
    {
      "choice": "augmentation",
      "decision": "disable for current 20% setting",
      "evidence": "p2e_resnet18_facecrop_aug reaches AUC 0.9737, below facecrop-only 0.9755; SimpleCNN drops sharply.",
      "confidence": "low"
    },
    {
      "choice": "normalization",
      "decision": "ImageNet/default",
      "evidence": "real_norm is only +0.0018 AUC and is less aligned with pretrained ImageNet weights.",
      "confidence": "medium"
    },
    {
      "choice": "source generalization",
      "decision": "report as limitation and diagnostic target",
      "evidence": "Holding out text2img and insight drops pairwise AUC to 0.7595 and 0.8421.",
      "confidence": "high"
    }
  ]
}