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          }
        ],
        "image_size": [
          1536,
          1024
        ],
        "predicted_count": 6,
        "overlay": "overlay.png",
        "inference_seconds": 1.844,
        "device": "cuda",
        "notice": "Model proposals require annotation review. COCO exports preserve mask RLE; manual boxes use rectangular masks.",
        "execution_mode": "connected"
      }
    }
  ],
  "environment": {
    "gpu": "NVIDIA GeForce RTX 4070 Laptop GPU / 8 GB",
    "execution": "Fresh local inference with existing weights, isolated worker subprocesses"
  },
  "latency": {
    "median_case_seconds": 8.433,
    "p95_case_seconds": 8.433,
    "includes": "Full HTTP run, including model loading and OCR where applicable."
  },
  "limits": "Small original synthetic scenarios. No customer data or production-accuracy claims. Inspection calibration and held-out seeds are separate but share a procedural generator. Counting/labeling each evaluate one AI-generated scene; mask-output checks are structural, not mask-quality ground truth."
}