fix: point NFS provisioner at active Proxmox host export

The cluster nodes can reach the exported NFS path on 10.27.27.239, not
10.27.27.22. Update the storage addon and repo note so the NFS provisioner
mounts the live export and Flux health checks can converge.

AGENTS.md

@@ -11,7 +11,7 @@ Repository guide for OpenCode sessions in this repo.
 
 - HA private cluster: 3 control planes, 5 workers on Proxmox.
 - Proxmox clones come from template `9000` on node `flex`; API VIP is `10.27.27.40` via kube-vip.
-- Storage is `nfs-subdir-external-provisioner` backed by `10.27.27.22:/TheFlash/k8s-nfs` with StorageClass `flash-nfs`.
+- Storage is `nfs-subdir-external-provisioner` backed by `10.27.27.239:/TheFlash/k8s-nfs` with StorageClass `flash-nfs`.
 - Tailscale is the private access path for Rancher and shared services.
 - Rancher, Grafana, and Prometheus are exposed through Tailscale; Flux UI / Weave GitOps is removed.
 - `apps/` is suspended by default.

infrastructure/addons/nfs-storage/helmrelease-nfs-subdir-external-provisioner.yaml

@@ -23,7 +23,7 @@ spec:
       retries: 3
   values:
     nfs:
-      server: 10.27.27.22
+      server: 10.27.27.239
       path: /TheFlash/k8s-nfs
     storageClass:
       create: true