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/zod-to-json-schema/dist/esm/errorMessages.js

@@ -0,0 +1,14 @@
+export function addErrorMessage(res, key, errorMessage, refs) {
+    if (!refs?.errorMessages)
+        return;
+    if (errorMessage) {
+        res.errorMessage = {
+            ...res.errorMessage,
+            [key]: errorMessage,
+        };
+    }
+}
+export function setResponseValueAndErrors(res, key, value, errorMessage, refs) {
+    res[key] = value;
+    addErrorMessage(res, key, errorMessage, refs);
+}