demo(nextjs): Fix stackblitz demo

Author: ntucker

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 ## Getting Started
 
-Use the `/initialize` Cursor command to set up your development environment.
+Use the `/initialize` Cursor skill to set up your development environment.
 
 ## Bug Reports
 
@@ -39,7 +39,7 @@ If your idea requires design considerations, it's best to [start a discussion][4
   examples. If you're unsure, don't hesitate to [open an issue][1] and ask!
 
 * Add a changeset for user-facing changes in published packages:
-  * Use the `/changeset` Cursor command to generate changesets, update docs, and prepare a PR description.
+  * Use the `/changeset` Cursor skill to generate changesets, update docs, and prepare a PR description.
   * If doing manually: run `yarn changeset` from repo root once per distinct change.
 
 * Submit your pull request!

examples/nextjs/package-lock.json

@@ -27,7 +27,7 @@
     "@types/react-dom": "19.2.3",
     "clsx": "^2.1.1",
     "core-js": "^3.40.0",
-    "next": "^15.5.12",
+    "next": "~15.4.10",
     "react": "19.2.4",
     "react-dom": "19.2.4",
     "tar-fs": "^3.0.6",