Expand description
SLA escalation cron job stub (Story 3.7 — FR32 INV-23).
Phase A scope: expose a single run_once() entrypoint that performs one
pass of SLA escalation by delegating to
SyndicResponseUseCases::escalate_overdue. The real scheduler (tokio
interval task) lands in Phase B / a follow-up; tests call run_once
manually for now.