{
  "contract_id": "support-quality-contract-v1",
  "owner": "equipo-datos-ia",
  "purpose": "Auditar calidad de datos, leakage y etiquetas antes de entrenar, evaluar o indexar.",
  "required_columns": [
    "case_id",
    "split",
    "created_at",
    "source_id",
    "product",
    "language",
    "channel",
    "label",
    "text",
    "expected_label",
    "model_probability",
    "license",
    "pii_risk",
    "owner",
    "consent_scope",
    "annotator_a",
    "annotator_b"
  ],
  "allowed_splits": ["train", "validation", "test"],
  "allowed_products": ["matricula", "becas", "pagos", "horarios", "titulos", "practicas"],
  "allowed_languages": ["es"],
  "allowed_channels": ["portal", "email", "chat"],
  "allowed_labels": ["answer", "ask_more", "escalate"],
  "allowed_pii_risk": ["low", "medium"],
  "allowed_licenses": {
    "train": ["internal_training_allowed"],
    "validation": ["support_eval_only"],
    "test": ["support_eval_only"]
  },
  "min_rows_per_split": {
    "train": 6,
    "validation": 3,
    "test": 4
  },
  "max_missing_rate": 0.02,
  "max_exact_cross_split_duplicates": 0,
  "max_near_cross_split_duplicates": 0,
  "near_duplicate_jaccard_threshold": 0.82,
  "min_model_probability_for_label": 0.55,
  "min_kappa": 0.6,
  "max_split_label_total_variation": 0.35
}