fix: close create dialog before showing config dialog

The config dialog was being created inside the create dialog's slot
context. When NiceGUI tried to attach the new dialog, the parent
slot was already marked for deletion, causing a RuntimeError.

wiregui/pages/admin/devices.py

@@ -128,11 +128,11 @@ async def admin_devices_page():
             # Show config
             server_pubkey = await get_server_public_key()
             config_text = build_client_config(device, private_key, server_pubkey)
-            _show_config_dialog(device.name, config_text)
 
             create_dialog.close()
             _reset_create_form()
             await refresh_table()
+            _show_config_dialog(device.name, config_text)
         except Exception as e:
             logger.error("Failed to create device: {}", e)
             ui.notify(f"Error: {e}", type="negative")

wiregui/pages/devices.py

@@ -112,11 +112,11 @@ async def devices_page():
 
             server_pubkey = await get_server_public_key()
             config_text = build_client_config(device, private_key, server_pubkey)
-            _show_config_dialog(device.name, config_text)
 
             create_dialog.close()
             _reset_create_form()
             await refresh_table()
+            _show_config_dialog(device.name, config_text)
 
         except Exception as e:
             logger.error("Failed to create device: {}", e)