{
  "contract_id": "f8-final-experiment-exposure-contract",
  "versión": "2026.06.07",
  "unit": "case_id",
  "treatment": "guided_template_for_international_practices",
  "control": "current_flow",
  "primary_metric": "resolved_day_7",
  "guardrails": [
    "citation_valid",
    "latency_ms",
    "negative_feedback",
    "cost_eur"
  ],
  "required_exposure_fields": [
    "case_id",
    "experiment_id",
    "variant",
    "exposed_at",
    "prompt_version",
    "retriever_version",
    "trace_id"
  ],
  "analysis_rule": "No se analiza por asignación solamente. Debe existir exposición real con versión de prompt y retriever."
}