- Add tickets.inc_open_sla: open tickets with derived SLA (hours_open, sla_state
vs 48h; clock = created_at_service or first_seen_at fallback) + team/cluster/geog
for dispatch. (One-time legacy region->lowercase backfill applied to live data.)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
