{
  "contract_version": "1.0.0",
  "max_population_stability_index": 0.20,
  "max_reward_delta": 0.10,
  "min_reward_mean": 0.62,
  "min_case_pass_rate": 0.90,
  "min_evidence_pass_rate": 0.90,
  "max_p95_latency_ms": 2500,
  "max_tool_error_rate": 0.04,
  "max_fallback_rate": 0.08,
  "required_stages": ["shadow", "pilot_5", "pilot_25"],
  "required_trace_fields": [
    "trace_id",
    "policy_version",
    "policy_candidate_version",
    "reward_card_version",
    "input_slice",
    "action",
    "action_probability",
    "reward",
    "hard_gates",
    "latency_ms",
    "fallback_policy_version"
  ],
  "required_outputs": [
    "serving_audit_report.json",
    "serving_decision.md",
    "drift_scorecard.csv",
    "rollout_scorecard.csv",
    "serving_runbook.md"
  ]
}