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/@shikijs/langs/dist/markdown-nix.mjs

@@ -0,0 +1,5 @@
+const lang = Object.freeze(JSON.parse("{\"fileTypes\":[],\"injectTo\":[\"text.html.markdown\"],\"injectionSelector\":\"L:text.html.markdown\",\"name\":\"markdown-nix\",\"patterns\":[{\"include\":\"#nix-code-block\"}],\"repository\":{\"nix-code-block\":{\"begin\":\"(^|\\\\G)(\\\\s*)(`{3,}|~{3,})\\\\s*(?i:(nix)(\\\\s+[^`~]*)?$)\",\"beginCaptures\":{\"3\":{\"name\":\"punctuation.definition.markdown\"},\"5\":{\"name\":\"fenced_code.block.language\"},\"6\":{\"name\":\"fenced_code.block.language.attributes\"}},\"end\":\"(^|\\\\G)(\\\\2|\\\\s{0,3})(\\\\3)\\\\s*$\",\"endCaptures\":{\"3\":{\"name\":\"punctuation.definition.markdown\"}},\"name\":\"markup.fenced_code.block.markdown\",\"patterns\":[{\"begin\":\"(^|\\\\G)(\\\\s*)(.*)\",\"contentName\":\"meta.embedded.block.nix\",\"patterns\":[{\"include\":\"source.nix\"}],\"while\":\"(^|\\\\G)(?!\\\\s*([`~]{3,})\\\\s*$)\"}]}},\"scopeName\":\"markdown.nix.codeblock\"}"))
+
+export default [
+lang
+]