Update inventory/roles to keep K3s state on local storage and prevent iSCSI from managing /var/lib/rancher.
Also add a single-host k3s install playbook, a systemd override template, and docs describing the installer ↔ Ansible boundary and slow-storage knobs.
Co-authored-by: Junie <junie@jetbrains.com>
- Added tasks and playbooks for K3s datastore export/import using MariaDB Tools role, with associated tests and defaults.
- Enhanced iSCSI role to support mkfs-once logic and safer re-initialization of block storage.
- Migrated iSCSI-backed Rancher data from retropie to merlin.prole.org.
- Updated k3s roles/playbooks to relax Rancher storage preflight checks, supporting PARTUUID-based mounts.
- Adjusted Samba AD NetBIOS name derivation to use uppercase short hostname by default.
- Incremented prole DB version to 104, updated generated prole.cfg, inventory, and recovery manifest templates.
