[2026-10-08 12:03:57] production.INFO: CSV import started {"session_id":"csv_import_6ac7081d23fe77.74912349","user_id":110,"user_name":"unknown","ip_address":"221.241.23.166","user_agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.36 Edg/154.0.0.0","import_config":{"table":"products","mode":"update","total_rows":78,"mapping":{"product_code":"商品コード","cost_price":"下代","profit_calc_price":"粗利算出用単価","accessory_cost_price":"付属原価"}},"file_info":{"name":"旧価格更新.csv","size":1650,"path":"csv_imports/qzgQJV0PwEd2VyTNFGg9WCxDIjxg1DDN0dU9Yv98.csv"},"performance":{"start_time":"2026-10-08 12:03:57","start_memory_mb":6.0},"timestamp":"2026-10-08T03:03:57.148988Z","component":"csv_import"} 
[2026-10-08 12:03:57] production.INFO: CSV import completed {"session_id":"csv_import_6ac7081d23fe77.74912349","user_id":110,"user_name":"unknown","ip_address":"221.241.23.166","user_agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.36 Edg/154.0.0.0","result":{"import_id":1068,"success":true,"total_rows":78,"processed_rows":78,"success_rows":78,"error_rows":0,"warning_rows":0,"has_error_file":false},"performance":{"execution_time_seconds":0.365,"start_memory_mb":6.0,"end_memory_mb":6.0,"peak_memory_mb":6.0,"memory_increase_mb":0.0},"timestamp":"2026-10-08T03:03:57.512989Z","component":"csv_import"}