{
  "fixture_sha256": "b4e465a0eb9582b826eebd2a20797e1680e4907e336d02d0ef2194e2ba0af393",
  "worker": null,
  "overall": {
    "positive_queries": 3,
    "unsupported_queries": 0,
    "recall_at1": 1.0,
    "recall_at5": 1.0,
    "mrr": 1.0,
    "temporal_queries": 0,
    "segment_overlap_hit_at1": null,
    "timestamp_point_hit_at1": null,
    "segment_overlap_hit_at5": null,
    "timestamp_distance_median_s": null,
    "timestamp_distance_max_s": null,
    "no_answer_queries": 1,
    "no_answer_return_rate": 0.0
  },
  "by_category": {
    "exact-metadata": {
      "positive_queries": 3,
      "unsupported_queries": 0,
      "recall_at1": 1.0,
      "recall_at5": 1.0,
      "mrr": 1.0,
      "temporal_queries": 0,
      "segment_overlap_hit_at1": null,
      "timestamp_point_hit_at1": null,
      "segment_overlap_hit_at5": null,
      "timestamp_distance_median_s": null,
      "timestamp_distance_max_s": null,
      "no_answer_queries": 0,
      "no_answer_return_rate": null
    },
    "metadata-no-answer": {
      "positive_queries": 0,
      "unsupported_queries": 0,
      "recall_at1": null,
      "recall_at5": null,
      "mrr": null,
      "temporal_queries": 0,
      "segment_overlap_hit_at1": null,
      "timestamp_point_hit_at1": null,
      "segment_overlap_hit_at5": null,
      "timestamp_distance_median_s": null,
      "timestamp_distance_max_s": null,
      "no_answer_queries": 1,
      "no_answer_return_rate": 0.0
    }
  },
  "by_language": {
    "en": {
      "positive_queries": 3,
      "unsupported_queries": 0,
      "recall_at1": 1.0,
      "recall_at5": 1.0,
      "mrr": 1.0,
      "temporal_queries": 0,
      "segment_overlap_hit_at1": null,
      "timestamp_point_hit_at1": null,
      "segment_overlap_hit_at5": null,
      "timestamp_distance_median_s": null,
      "timestamp_distance_max_s": null,
      "no_answer_queries": 1,
      "no_answer_return_rate": 0.0
    }
  },
  "encoding_failures": [],
  "encoding_ms": 1863.0235000000002,
  "query_p50_ms": 0.7408,
  "query_p95_ms": 1.0931,
  "failures": [],
  "source_scope": "Actual FFprobe stream/format metadata + guarded Searchi core FTS; lexical identity queries, no embedding fallback; encoding_ms measures metadata extraction, not model inference",
  "interpretation": "Small independently labelled public-media diagnostic; source_scope identifies the measured lane. No-answer return rate measures unsuppressed output, not a calibrated confidence policy. Audio interval overlap can pass while the returned start timestamp is too early; point hits expose this. This corpus alone cannot certify production quality."
}