f6b0e2b22f
Network probes (no web admin, Debian SSH banner, only file-server ports open) show 10.250.50.50 is vanilla Debian 12 with hand-configured NFS/SMB, reprovisioned from the original TrueNAS SCALE install. Update stack comments, README storage notes, Backrest description, proxmox-vms.md entry for VM 100, and the restic configs intro to match. Cross-site sync plan simplifies to plain rsync over SSH on both sides — no appliance-specific tooling needed.