Incident Post-Mortem

Facilitate a blameless post-mortem for: Incident: [description]. Impact: [users affected, duration, severity]. Timeline: [key events]. Write a complete post-mortem document: (1) Incident summary (3 sentences). (2) Timeline (chronological, with detection delay noted). (3) Root cause analysis (use 5 Whys). (4) Contributing factors. (5) What went well. (6) Action items (each: owner, deadline, success metric). (7) How this changes our runbooks/alerting/architecture. Tone: blameless, learning-focused.