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Release Runbook (Atomic Cutover)

Preconditions

all prior phase gates complete
signed release checklist
rollback owner and communication owner assigned

Cutover Sequence

freeze non-release writes and announce maintenance window
execute final backup snapshot
deploy release candidate build
run reset/reseed as planned for production state model
run post-deploy integrity and smoke checks
run mandatory critical-path E2E subset
publish completion and monitor

Immediate Post-Cutover Checks

auth and role gating paths
transition mutation sanity
assignment preview/execute path
live cursor operations
audience vote acceptance and dedupe
reporting endpoint correctness

Rollback Trigger Conditions

integrity check failures
critical mutation path failure
unacceptable error-rate spike

Rollback Plan (High Level)

restore backup snapshot
redeploy previous stable build
validate critical-path smoke tests
issue incident communication and postmortem schedule