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/mdast-util-to-markdown/lib/handle/break.js

@@ -0,0 +1,30 @@
+/**
+ * @import {Break, Parents} from 'mdast'
+ * @import {Info, State} from 'mdast-util-to-markdown'
+ */
+
+import {patternInScope} from '../util/pattern-in-scope.js'
+
+/**
+ * @param {Break} _
+ * @param {Parents | undefined} _1
+ * @param {State} state
+ * @param {Info} info
+ * @returns {string}
+ */
+export function hardBreak(_, _1, state, info) {
+  let index = -1
+
+  while (++index < state.unsafe.length) {
+    // If we can’t put eols in this construct (setext headings, tables), use a
+    // space instead.
+    if (
+      state.unsafe[index].character === '\n' &&
+      patternInScope(state.stack, state.unsafe[index])
+    ) {
+      return /[ \t]/.test(info.before) ? '' : ' '
+    }
+  }
+
+  return '\\\n'
+}