{"agent_type":"callsign_analysis","ai_model":"Qwen2.5-3B-Instruct-GPTQ-Int4","ai_pass":true,"ai_provider":"vllm","completed_at":"2026-07-13T10:48:52.489939+00:00","duration_seconds":2.030683,"id":1652216,"input_summary":"chars=616 node=683211","metadata":{"llm_candidates":[{"callsign":"W4A","confidence":0.78}]},"output_summary":"ai_candidates=1 merged=1 calls=W4A","recording_id":162566,"started_at":"2026-07-13T10:48:50.459256+00:00","status":"completed","step_name":"callsign.llm_extract","transcription_id":159320}