fix: make private IP outputs resilient during partial imports

terraform/outputs.tf

@@ -10,7 +10,10 @@ output "control_plane_names" {
 
 output "control_plane_private_ips" {
   description = "Private IPs of control plane nodes"
-  value       = [for cp in hcloud_server.control_plane : one(cp.network).ip]
+  value = [
+    for idx, cp in hcloud_server.control_plane :
+    try(one(cp.network).ip, cidrhost(var.subnet_cidr, 10 + idx))
+  ]
 }
 
 output "primary_control_plane_ip" {
@@ -30,7 +33,10 @@ output "worker_names" {
 
 output "worker_private_ips" {
   description = "Private IPs of worker nodes"
-  value       = [for worker in hcloud_server.workers : one(worker.network).ip]
+  value = [
+    for idx, worker in hcloud_server.workers :
+    try(one(worker.network).ip, cidrhost(var.subnet_cidr, 20 + idx))
+  ]
 }
 
 output "ssh_private_key_path" {