feat: migrate cluster baseline from Hetzner to Proxmox

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.

ansible/roles/kube-vip-deploy/tasks/main.yml

@@ -0,0 +1,21 @@
+---
+- name: Render kube-vip control plane manifest
+  template:
+    src: kube-vip-control-plane.yaml.j2
+    dest: /tmp/kube-vip-control-plane.yaml
+    mode: "0644"
+
+- name: Apply kube-vip control plane manifest
+  command: kubectl apply -f /tmp/kube-vip-control-plane.yaml
+  changed_when: true
+
+- name: Wait for kube-vip DaemonSet rollout
+  command: kubectl -n kube-system rollout status daemonset/kube-vip --timeout=180s
+  changed_when: false
+
+- name: Wait for API VIP on 6443
+  wait_for:
+    host: "{{ kube_vip_address }}"
+    port: 6443
+    state: started
+    timeout: 180