specializations/observability/incident-lifecycle overview

DEPRECATED. The full detection-to-postmortem incident lifecycle that once lived here (single-workflow lifecycle, severity matrix, non-incident early exit, timeline accumulation, comms phase model with no-blame rules, iterative 3-pass diagnosis, SLO breach detection, and follow-up issue creation) is now owned by the incident-management flagship, whose header records this module as an `@absorbs` seed — every one of those features is implemented there against a superset contract (same signal shape, additional severity-routed policy gates and an adversarial postmortem gate). This file re-exports the flagship `process` so existing callers of `specializations/observability/incident-lifecycle` keep working unchanged. Observability is now an SLO-driven practice; its flagship is `slo-lifecycle.js` in this directory.