{
  "report_id": "report-bf874f6f-6b22-40fb-881b-3a657de8c947",
  "timestamp": "2026-04-14T15:04:26.240344+00:00",
  "source_trajectory_ids": [
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  "sample_count": 10,
  "baseline_metrics": {
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    "error_rate": 0.0,
    "avg_latency_ms": 0.0
  },
  "challenger_metrics": {
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  },
  "promotion_decision": {
    "accepted": false,
    "reasons": [
      "Reward delta 0.0000 below minimum 1.0"
    ],
    "metrics": {
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      "challenger_avg_reward": 0.44
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  "promoted_version_id": null
}