Fix: add lifecycle ignore_changes to prevent VM replacement on cloud-init updates

modules/k8s-node/main.tf

@@ -30,6 +30,10 @@ resource "proxmox_virtual_environment_file" "cloud_init" {
     })
     file_name = "ci-${var.name}.yaml"
   }
+
+  lifecycle {
+    ignore_changes = [source_raw]
+  }
 }
 
 # ─── VM ───────────────────────────────────────────────────────────────────────
@@ -86,4 +90,12 @@ resource "proxmox_virtual_environment_vm" "k8s_node" {
       servers = ["8.8.8.8", "1.1.1.1"]
     }
   }
+
+  # Cloud-init changes should NOT trigger VM replacement.
+  # CPU/RAM/disk changes are safe in-place updates.
+  lifecycle {
+    ignore_changes = [
+      initialization[0].user_data_file_id,
+    ]
+  }
 }