Install Beag script to protect this SaaS application:

1. Create an empty beag.js file in the appropriate static/public folder for this project (e.g., /js, /public/js, /static/js, /assets/js, or project root). Leave it empty - I will paste the code myself.

2. Add the script tag before </head> in the appropriate location based on the framework:
   - Static/Template sites: layout or base template file
   - Next.js (pages): _document.tsx
   - Next.js (app router): app/layout.tsx
   - React (Vite/CRA): index.html
   - Vue/Nuxt: app.vue or nuxt.config head section
   - SvelteKit: app.html
   - Astro: main layout .astro file
   - Angular: src/index.html

<script type="module" src="[relative-path-to-beag.js]"></script>

3. Show me which files were created/modified.