verify_capability(); if ( $error ) { return $error; } $post_id = (int) sanitize_text_field( $request->get_param( 'pageId' ) ); $xpath = sanitize_text_field( $request->get_param( 'xpath' ) ); if ( ! $post_id || ! $xpath ) { return $this->respond_error_json( [ 'message' => 'Missing required parameters', 'code' => 'missing_parameters', ] ); } $data = get_post_meta( $post_id, self::META_KEY, true ) ?? []; if ( ! $data ) { $data = []; } $data[] = $xpath; update_post_meta( $post_id, self::META_KEY, array_unique( $data ) ); return $this->respond_success_json( [ 'message' => 'Heading issue dismissed', ] ); } catch ( Throwable $t ) { return $this->respond_error_json( [ 'message' => $t->getMessage(), 'code' => 'internal_server_error', ] ); } } }