argocd-apps docs

Operational notes for the manifests in this repo.

Doc	What it covers
cnpg-backups.md	How CNPG Postgres backups (WAL archiving + nightly base backups) to Ceph RGW are configured.
cnpg-restore.md	Restoring a CNPG cluster: full recovery, point-in-time recovery, cutover, and gotchas.
authentik-rancher-sso.md	Manual runtime step to point Rancher's OIDC auth at the canonical identity.unkin.net issuer and trust the internal CA.
gitea-migration.md	Staged cutover of the git.unkin.net forge from the Puppet VM to the gitea namespace.