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This patch preserves immediate severity escalation during an active incident's deduplication window and records older lifecycle events without allowing them to change incident state or create deliveries. Incident identity remains client + route + dedupe_key.
Raw events, event IDs, subscriptions, routes, silence rules and other channels' info/test behavior are retained. There is no database schema migration or added recovery timer. Sources must establish consecutive successful checks before sending resolved; the gateway does not infer health from elapsed time.
Validation: Go tests, go vet, release configuration checks, isolated Docker E2E, website/link checks and the signed example test. GitHub Actions builds linux/amd64 and linux/arm64, validates SBOM/provenance, and publishes directly to the existing ACR registry. Per-platform evidence is retained in the release-evidence-v0.6.3 Actions artifact.
Upgrade by replacing the image after a paired data/secrets backup. Roll back to the previous image while retaining current data. v0.6.2 was superseded before production deployment to correct release references; its workflow was cancelled and its tag was not rewritten.