{
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  "timestamp": "2026-04-14T21:22:02.820380+00:00",
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    "error_rate": 0.0,
    "avg_latency_ms": 42.0
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  "challenger_metrics": {
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  },
  "promotion_decision": {
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    "reasons": [],
    "metrics": {
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  },
  "promoted_version_id": "20260414-212202",
  "baseline_version_id": "v-baseline",
  "dry_run": false
}