{
  "gate_id": "G-KRAKEN-TL",
  "module": "assembly",
  "status": "FAIL",
  "evidence": {
    "tl_db_at_1km": 999.0,
    "margin_db": -949.0,
    "margin_threshold_db": 6.0,
    "sl_db": 170.0,
    "rx_threshold_db": 120.0,
    "n_modes": 0,
    "freq_khz": 25.0,
    "depth_m": 50.0,
    "max_range_m": 1000.0,
    "tool_path": "/opt/at/bin/kraken.exe",
    "elapsed_s": 30.31,
    "detail": "TL=999.0 dB at 1000m; margin=-949.0 dB (threshold 6.0 dB); 0 modes parsed from .mod."
  }
}