{
  "schema": "MKN007_LAB_EVIDENCE_v1",
  "required": [
    "query_id",
    "learner_intent",
    "candidate_set",
    "relevance_score",
    "filter_state",
    "rank_position",
    "facet_dimension",
    "facet_value",
    "judgment_set",
    "relevance_grade",
    "evaluation_metric",
    "metric_result",
    "zero_result_state",
    "fallback_route",
    "taxonomy_version",
    "review_owner"
  ],
  "extra_design_fields": [
    "query_clause",
    "filter_clause",
    "metric_threshold",
    "relevant_grade_threshold",
    "facet_mapping_valid",
    "intent_changed",
    "judgments_rebuilt",
    "baseline_oracle_reuse"
  ]
}