The Proxmox Ubuntu clones are exposing their primary NIC as eth0, not ens18.
Use ansible_default_ipv4.interface for k3s flannel and kube-vip so bootstrap
tracks the actual interface name instead of a guessed template default.
Replace Hetzner infrastructure and cloud-provider assumptions with Proxmox
VM clones, kube-vip API HA, and NFS-backed storage. Update bootstrap,
Flux addons, CI workflows, and docs to target the new private Proxmox
baseline while preserving the existing Tailscale, Doppler, Flux, Rancher,
and B2 backup flows.
micqdf