Dumps incus state + auto-discovered databases (MariaDB/MySQL either
binary naming, native and docker-hosted PostgreSQL, grants/globals),
backs up the dump tree and the fs sources listed in plakar-sources
into any plakar kloset (-k @s3), applies retention, optional sync to
a second store. Loud SKIP lines for the plakar-db-exclude opt-out.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
