Strip non-essential plugins and hide nav/sidebar UI

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

package.json

@@ -28,7 +28,7 @@
     "@radix-ui/react-switch": "^1.2.5",
     "@radix-ui/react-tabs": "^1.1.12",
     "@radix-ui/react-tooltip": "^1.2.7",
-    "@reacteditor/core": "0.0.10",
+    "@reacteditor/core": "0.0.12",
     "@reacteditor/field-google-fonts": "^0.0.1",
     "@reacteditor/field-shopify": "^0.0.1",
     "@reacteditor/plugin-ai": "^0.0.4",