Concert ticketing: find reused tickets, serials sold in both channels and refunded tickets that got in…

Concert ticketing: find reused tickets, serials sold in both channels and refunded tickets that got in…: a task in agent-harbor-tasks (Harbor dataset). We're doing the post-event audit for Autumn Lights (12 September 2026). I need three lists from the ticketing data in /workdir (start with the…