{"agent_type":"callsign_analysis","ai_model":"Qwen2.5-3B-Instruct-GPTQ-Int4","ai_pass":true,"ai_provider":"vllm","completed_at":"2026-07-12T14:30:15.849743+00:00","duration_seconds":1.34897,"id":1621004,"input_summary":"chars=764 node=683211","metadata":{"llm_candidates":[{"callsign":"KK7Z","confidence":0.78},{"callsign":"KT7G","confidence":0.78}]},"output_summary":"ai_candidates=2 merged=4 calls=KK7Z,KT7G","recording_id":160510,"started_at":"2026-07-12T14:30:14.500773+00:00","status":"completed","step_name":"callsign.llm_extract","transcription_id":157363}