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/astro/dist/actions/runtime/utils.js

@@ -0,0 +1,16 @@
+const ACTION_API_CONTEXT_SYMBOL = Symbol.for("astro.actionAPIContext");
+const formContentTypes = ["application/x-www-form-urlencoded", "multipart/form-data"];
+function hasContentType(contentType, expected) {
+  const type = contentType.split(";")[0].toLowerCase();
+  return expected.some((t) => type === t);
+}
+function isActionAPIContext(ctx) {
+  const symbol = Reflect.get(ctx, ACTION_API_CONTEXT_SYMBOL);
+  return symbol === true;
+}
+export {
+  ACTION_API_CONTEXT_SYMBOL,
+  formContentTypes,
+  hasContentType,
+  isActionAPIContext
+};