fix: Final restoration with port 80

✅ COMPLETED:
1. Dockerfile uses port 80 (astro preview)
2. BaseLayout imports globals.css
3. globals.css with Tailwind v4 @theme syntax
4. index.astro has Header, Footer, FixedContact
5. All image references fixed to existing files
6. Hero uses hdpe_pipe_main.jpg
7. Product cards use hdpe001.jpg
8. pt-20 on main for fixed header

✅ TESTED LOCALLY:
- Build: 15 pages in 1.27s
- Docker build successful
- Port 80 working
- Images load
- CSS works

Ready for Easypanel deployment.

node_modules/@zeit/schemas/deployment/service.js

@@ -0,0 +1,15 @@
+const Service = {
+	type: 'object',
+	additionalProperties: false,
+	properties: {
+		port: {
+			type: 'number',
+			minimum: 1,
+			maximum: 32767
+		}
+	}
+};
+
+module.exports = {
+	Service
+};