rus-zip-backup

Backup and restore workflows for databases and storage trees, built on the rus-zip CLI. This skill assumes the rus-zip skill's basics — CLI preflight/install, format choice, license gating, and the flag tables for compress/extract/list/test/append. Read that skill first if you have not already; this document covers backup-specific sequences only and does not restate its command reference.

The two invariants (unconditional)

Backup invariant — every backup, both domains: