{"agent_type":"callsign_analysis","ai_model":"/stor/models/Qwen2.5-72B-Instruct-GPTQ-Int4","ai_pass":true,"ai_provider":"vllm","completed_at":"2026-07-18T02:30:32.447094+00:00","duration_seconds":3.741078,"id":1820893,"input_summary":"chars=463 node=683210","metadata":{"llm_candidates":[{"callsign":"W4C","confidence":0.78},{"callsign":"K4C","confidence":0.78}]},"output_summary":"ai_candidates=2 merged=2 calls=W4C,K4C","recording_id":173896,"started_at":"2026-07-18T02:30:28.706016+00:00","status":"completed","step_name":"callsign.llm_extract","transcription_id":169350}