defect_id,severity,status,scenario,service,risk_level,summary,repro_steps,actual_result,expected_result,verification_step,owner,opened_at,closed_at,backlog_bucket,notes
UAT-001,P3,Open,S4,routing-service,Medium,"Example defect summary","1) ... 2) ...","Actual behavior","Expected behavior","Re-run scenario S4 after fix",owner_name,2026-02-26T00:00:00Z,,Wave2,