Set weekly on-call shift flag for night operations

Your on-call shift flag falls stale weekly, causing paging to target incorrect engineers. Update the active shift weekly so routing and alerts reflect the correct owner before shift start.

Overview

Prevent late-night routing and paging errors by ensuring the active on-call flag is refreshed every Tuesday at 7pm. This makes alerting and escalation reflect the correct engineer ahead of the shift, reducing missed handoffs before duty starts.