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/ajv/lib/runtime/ucs2length.ts

@@ -0,0 +1,20 @@
+// https://mathiasbynens.be/notes/javascript-encoding
+// https://github.com/bestiejs/punycode.js - punycode.ucs2.decode
+export default function ucs2length(str: string): number {
+  const len = str.length
+  let length = 0
+  let pos = 0
+  let value: number
+  while (pos < len) {
+    length++
+    value = str.charCodeAt(pos++)
+    if (value >= 0xd800 && value <= 0xdbff && pos < len) {
+      // high surrogate, and there is a next character
+      value = str.charCodeAt(pos)
+      if ((value & 0xfc00) === 0xdc00) pos++ // low surrogate
+    }
+  }
+  return length
+}
+
+ucs2length.code = 'require("ajv/dist/runtime/ucs2length").default'