fix: Add WNW_API config to standalone mode for API compatibility

includes/Admin/StandaloneAdmin.php

@@ -110,6 +110,13 @@ class StandaloneAdmin {
 		siteUrl: <?php echo wp_json_encode( home_url() ); ?>,
 		siteName: <?php echo wp_json_encode( get_bloginfo( 'name' ) ); ?>
 	};
+	
+	// Also set WNW_API for API compatibility
+	window.WNW_API = {
+		root: <?php echo wp_json_encode( $rest_url ); ?>,
+		nonce: <?php echo wp_json_encode( $nonce ); ?>,
+		isDev: <?php echo ( defined( 'WP_DEBUG' ) && WP_DEBUG ) ? 'true' : 'false'; ?>
+	};
 	</script>
 	
 	<script type="module" src="<?php echo esc_url( $js_url ); ?>"></script>