'success', 'data' => [], 'message' => '']; try { switch($action) { case 'stats': $response['data'] = [ 'total' => 0, 'active' => 0, 'success_rate' => 0 ]; break; case 'list': $response['data'] = []; break; default: $response['message'] = 'config-manager API Ready'; } } catch(Exception $e) { $response['status'] = 'error'; $response['message'] = $e->getMessage(); error_log("API config-manager error: " . $e->getMessage()); } echo json_encode($response); ?>