{
  "agent": "lyra",
  "version": "1.0",
  "extracted_at": "2026-05-01T00:00:00Z",
  "note": "Stub signature. Run extract_voice_signature via Tool.SlopDetector on a representative chapter to populate real values.",
  "avg_sentence_length": 17.2,
  "vocab_range_score": 0.55,
  "register": "literary",
  "pacing_profile": "medium",
  "dialogue_density_pct": 22.0,
  "sentence_length_variance": 15.8,
  "opening_word_repetition_rate": 0.14,
  "characteristic_phrases": [],
  "gate_thresholds": {
    "ai_score_max": 50,
    "sentence_length_variance_min": 8.0,
    "opening_word_repetition_rate_max": 0.25
  }
}