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/hast-util-to-html/lib/handle/index.js

@@ -0,0 +1,47 @@
+/**
+ * @import {Nodes, Parents} from 'hast'
+ * @import {State} from '../index.js'
+ */
+
+import {zwitch} from 'zwitch'
+import {comment} from './comment.js'
+import {doctype} from './doctype.js'
+import {element} from './element.js'
+import {raw} from './raw.js'
+import {root} from './root.js'
+import {text} from './text.js'
+
+/**
+ * @type {(node: Nodes, index: number | undefined, parent: Parents | undefined, state: State) => string}
+ */
+export const handle = zwitch('type', {
+  invalid,
+  unknown,
+  handlers: {comment, doctype, element, raw, root, text}
+})
+
+/**
+ * Fail when a non-node is found in the tree.
+ *
+ * @param {unknown} node
+ *   Unknown value.
+ * @returns {never}
+ *   Never.
+ */
+function invalid(node) {
+  throw new Error('Expected node, not `' + node + '`')
+}
+
+/**
+ * Fail when a node with an unknown type is found in the tree.
+ *
+ * @param {unknown} node_
+ *  Unknown node.
+ * @returns {never}
+ *   Never.
+ */
+function unknown(node_) {
+  // `type` is guaranteed by runtime JS.
+  const node = /** @type {Nodes} */ (node_)
+  throw new Error('Cannot compile unknown node `' + node.type + '`')
+}