{
  "schema_version": 2,
  "policy_version": "promotion-lab-v3",
  "policy": {
    "required_tests": ["unit", "data", "inference_smoke"],
    "max_overall_accuracy_drop": 0.0,
    "max_critical_slice_recall_drop": 0.02,
    "max_p95_latency_ms": 120.0,
    "max_artifact_size_bytes": 1000000,
    "max_error_rate": 0.02,
    "drift_investigation_threshold": 0.2,
    "min_observation_samples": 500,
    "min_labeled_samples_for_quality_decision": 500,
    "min_critical_labeled_samples_for_quality_decision": 100,
    "min_label_coverage_for_quality_decision": 0.6
  },
  "baseline": {
    "model_id": "champion-v7",
    "artifact_digest": "sha256:1111111111111111111111111111111111111111111111111111111111111111",
    "signature": {
      "input_schema_version": "fraud-features-v3",
      "output_schema_version": "fraud-score-v1"
    },
    "metrics": {
      "overall_accuracy": 0.86,
      "critical_slice_recall": 0.78,
      "p95_latency_ms": 92.0
    }
  },
  "candidates": [
    {
      "candidate_id": "candidate-safe",
      "lineage": {
        "data_snapshot": "dataset-2026-07-01-sha256-8f21",
        "label_version": "fraud-label-v4",
        "code_commit": "4e7a1c9",
        "environment_digest": "sha256:2222222222222222222222222222222222222222222222222222222222222222",
        "training_config_digest": "sha256:3333333333333333333333333333333333333333333333333333333333333333"
      },
      "artifact": {
        "digest": "sha256:4444444444444444444444444444444444444444444444444444444444444444",
        "format": "educational-placeholder",
        "size_bytes": 24000,
        "signature": {
          "input_schema_version": "fraud-features-v3",
          "output_schema_version": "fraud-score-v1"
        }
      },
      "tests": {
        "unit": true,
        "data": true,
        "inference_smoke": true
      },
      "metrics": {
        "overall_accuracy": 0.87,
        "critical_slice_recall": 0.77,
        "p95_latency_ms": 98.0
      }
    },
    {
      "candidate_id": "candidate-regression",
      "lineage": {
        "data_snapshot": "dataset-2026-07-08-sha256-c901",
        "label_version": "fraud-label-v4",
        "code_commit": "91bc423",
        "environment_digest": "sha256:2222222222222222222222222222222222222222222222222222222222222222",
        "training_config_digest": "sha256:5555555555555555555555555555555555555555555555555555555555555555"
      },
      "artifact": {
        "digest": "sha256:6666666666666666666666666666666666666666666666666666666666666666",
        "format": "educational-placeholder",
        "size_bytes": 26000,
        "signature": {
          "input_schema_version": "fraud-features-v3",
          "output_schema_version": "fraud-score-v1"
        }
      },
      "tests": {
        "unit": true,
        "data": false,
        "inference_smoke": true
      },
      "metrics": {
        "overall_accuracy": 0.88,
        "critical_slice_recall": 0.71,
        "p95_latency_ms": 90.0
      }
    }
  ]
}