chore: fix playground blueprint landing page and page creation script

- Point the landing page to the demo page slug instead of a hardcoded admin URL.
- Fix malformed PHP code in the page insertion step by using base64 encoding for the content.
- Update WordPress load paths to be relative.

Author: firestar300

blueprint.json

@@ -1,6 +1,6 @@
 {
 	"$schema": "https://playground.wordpress.net/blueprint-schema.json",
-	"landingPage": "/wp-admin/post.php?post=4&action=edit",
+	"landingPage": "/blockparty-modal-demo/",
 	"preferredVersions": {
 		"php": "8.1",
 		"wp": "latest"
@@ -26,11 +26,11 @@
 		},
 		{
 			"step": "runPHP",
-			"code": "<?php\nrequire_once '/wordpress/wp-load.php';\n$dir = WP_CONTENT_DIR . '/mu-plugins';\nif ( ! is_dir( $dir ) ) {\n\twp_mkdir_p( $dir );\n}\n$file = $dir . '/blockparty-modal-playground-svg-kses.php';\nfile_put_contents( $file, base64_decode( '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' ) );\necho file_exists( $file ) ? 'mu-plugin installed' : 'mu-plugin failed';\n?>"
+			"code": "<?php\nrequire_once 'wordpress/wp-load.php';\n$dir = WP_CONTENT_DIR . '/mu-plugins';\nif ( ! is_dir( $dir ) ) {\n\twp_mkdir_p( $dir );\n}\n$file = $dir . '/blockparty-modal-playground-svg-kses.php';\nfile_put_contents( $file, base64_decode( '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' ) );\necho file_exists( $file ) ? 'mu-plugin installed' : 'mu-plugin failed';\n?>"
 		},
 		{
 			"step": "runPHP",
-			"code": "<?php require_once '/wordpress/wp-load.php'; $page_content = '<?php require_once 'wordpress/wp-load.php'; $page_content = '<!-- wp:buttons -->\n<div class=\"wp-block-buttons\"><!-- wp:button {\"linkedModalId\":\"m-e16de3fe79f9\"} -->\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\">Open my modal window</a></div>\n<!-- /wp:button --></div>\n<!-- /wp:buttons -->\n\n<!-- wp:blockparty/modal {\"title\":\"My Modal\",\"modalId\":\"m-e16de3fe79f9\",\"displayIconOnly\":true,\"style\":{\"spacing\":{\"padding\":{\"top\":\"var:preset|spacing|40\",\"bottom\":\"var:preset|spacing|40\",\"left\":\"var:preset|spacing|40\",\"right\":\"var:preset|spacing|40\"}}}} -->\n<dialog class=\"wp-block-blockparty-modal\" style=\"padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\" id=\"modal-m-e16de3fe79f9\" aria-modal=\"true\" closedby=\"any\"><div class=\"wp-block-blockparty-modal__header\"><h2 class=\"wp-block-blockparty-modal__title\">My Modal</h2></div><div class=\"wp-block-blockparty-modal__content\"><!-- wp:paragraph -->\n<p>Blockparty Modal is a WordPress plugin that lets you add accessible modal dialogs to your content via the Gutenberg block editor. You define the modal content and behaviour in the editor; on the frontend, the modal is shown when the user activates a linked trigger (such as a button block).</p>\n<!-- /wp:paragraph --></div><button type=\"button\" class=\"wp-block-blockparty-modal__close-button\"><span class=\"sr-only\">Close this dialog window</span><svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" width=\"24\" height=\"24\" aria-hidden=\"true\"><path d=\"m13.06 12 6.47-6.47-1.06-1.06L12 10.94 5.53 4.47 4.47 5.53 10.94 12l-6.47 6.47 1.06 1.06L12 13.06l6.47 6.47 1.06-1.06L13.06 12Z\"></path></svg></button></dialog>\n<!-- /wp:blockparty/modal -->'; $page_id = wp_insert_post(array('post_title' => 'Blockparty Modal', 'post_content' => $page_content, 'post_status' => 'publish', 'post_type' => 'page')); echo 'Page created with ID: ' . $page_id; ?>'; $page_id = wp_insert_post(array('post_title' => 'Blockparty Modal', 'post_content' => $page_content, 'post_status' => 'publish', 'post_type' => 'page')); echo 'Page created with ID: ' . $page_id; ?>"
+			"code": "<?php\nrequire_once 'wordpress/wp-load.php';\n$page_content = base64_decode( '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' );\n$page_id = wp_insert_post( array(\n\t'post_title'   => 'Blockparty Modal',\n\t'post_name'    => 'blockparty-modal-demo',\n\t'post_content' => $page_content,\n\t'post_status'  => 'publish',\n\t'post_type'    => 'page',\n) );\necho 'Page created with ID: ' . $page_id;\n?>"
 		}
 	]
 }