feat: improve drive reattachment logic to safely remove unused entry after attaching volume

extensions/Servers/Proxmox/Livewire/Storage.php

@@ -1023,7 +1023,7 @@ class Storage extends Component
 
             $diskConfig = implode(',', $configParts);
 
-            // First, set the disk on the new bus
+            // First, set the disk on the new bus (this attaches the volume)
             $proxmox->request(
                 '/nodes/' . $this->server->node->name . '/qemu/' . $this->server->vm_id . '/config',
                 'put',
@@ -1032,14 +1032,19 @@ class Storage extends Component
                 ]
             );
 
-            // Then clear the unused slot (set to empty/none to remove the reference without deleting volume)
-            $proxmox->request(
-                '/nodes/' . $this->server->node->name . '/qemu/' . $this->server->vm_id . '/config',
-                'put',
-                [
-                    $this->reattachingDriveKey => '',
-                ]
-            );
+            // Then remove the unused entry using delete parameter
+            // This is safe because the volume is now attached to the new bus
+            try {
+                $proxmox->request(
+                    '/nodes/' . $this->server->node->name . '/qemu/' . $this->server->vm_id . '/config',
+                    'put',
+                    [
+                        'delete' => $this->reattachingDriveKey,
+                    ]
+                );
+            } catch (\Exception $e) {
+                // Unused entry might already be cleaned up automatically, ignore this error
+            }
 
             $this->notify("Drive reattached as {$targetKey} successfully.", 'success');
             $this->closeReattachModal();