fix: always allocate VMID as max+1 to prevent reuse of deleted server VMIDs

extensions/Servers/Proxmox/Proxmox.php

@@ -830,7 +830,16 @@ class Proxmox extends ClassServer
             $ipv6 = $this->getAvailableIps($node, $settings['ipv6'], 'ipv6');
         }
 
-        $vm_id = $this->request('/cluster/nextid')->json()['data'];
+        // Get the next VMID by finding the maximum existing VMID and adding 1
+        // This ensures we never reuse old VMIDs from deleted servers
+        $clusterResources = $this->request('/cluster/resources', 'get', ['type' => 'vm'])->json()['data'] ?? [];
+        $maxVmId = 99; // Default minimum VMID in Proxmox is 100
+        foreach ($clusterResources as $resource) {
+            if (isset($resource['vmid']) && $resource['vmid'] > $maxVmId) {
+                $maxVmId = (int) $resource['vmid'];
+            }
+        }
+        $vm_id = $maxVmId + 1;
 
         $password = Str::password(16);