fix publish issue

package/playground/README.md

@@ -0,0 +1,31 @@
+# dev playground
+
+## Setup
+
+Make sure to install the dependencies:
+
+```bash
+pnpm install
+```
+
+## Development Server
+
+Start the development server on http://localhost:3000
+
+```bash
+pnpm dev
+```
+
+## Production
+
+Build the application for production:
+
+```bash
+pnpm build
+```
+
+Locally preview production build:
+
+```bash
+pnpm preview
+```