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/unstorage/drivers/session-storage.mjs

@@ -0,0 +1,12 @@
+import { defineDriver } from "./utils/index.mjs";
+import localstorage from "./localstorage.mjs";
+const DRIVER_NAME = "session-storage";
+export default defineDriver((opts = {}) => {
+  return {
+    ...localstorage({
+      windowKey: "sessionStorage",
+      ...opts
+    }),
+    name: DRIVER_NAME
+  };
+});