Manage active production incidents end-to-end. Use when an alert fires, a service is degraded or down, error rates spike, latency increases, or a customer reports an outage. Covers detection, severity classification, response coordination, communication drafting, and incident timeline tracking. Trigger keywords: incident, outage, down, degraded, alert, pager, on-call, oncall, P0, P1, P2, SEV1, SEV2, firing, pagerduty, opsgenie, service unavailable, 5xx spike, error rate high, latency spike, customers affected.