描述
Plan and review release execution for web, backend, and fullstack systems: preview releases, staging-to-production promotion, rollout strategy, post-deploy verification, rollback response, and release-hardening checklists. Use when the system can already build and the main job is shipping or recovering a release safely, choosing between preview / promotion / canary / rollback paths, or tightening deploy gates around health checks and sign-off. Route CI workflow authoring to `workflow-automation`, machine/runtime setup to `system-environment-setup`, long-lived telemetry design to `monitoring-observability`, and Vercel-specific operations to `vercel-deploy`.