W5: Incremental Lookback Reload (dbt-style)

Re-running the Jun-04 incremental load must pick up late-arriving events from the prior 3 days without duplicating re-delivered rows. Return one row per event_id (keep the latest event_date on ties) with event_date between '2025-06-01' and '2025-06-04' inclusive. Return event_id, user_id, event_type, event_date. Order by event_date, event_id.