curriculum-project-hub/.scratch/saas-production-readiness/issues/12-atomic-releases-and-rollback.md

Make application releases atomic and rollbackable

Type: task Status: open Blocked by: 10, 11

Question

Replace in-place rsync/build with deployment locking, immutable staged release directories, a revision manifest, atomic current/previous switching, bounded retention, and an explicit application rollback that preserves the live release on build, preflight, switch, or readiness failure.