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/package-manager-detector/dist/index.mjs

@@ -0,0 +1,6 @@
+export { COMMANDS, constructCommand, resolveCommand } from './commands.mjs';
+export { AGENTS, INSTALL_METADATA, INSTALL_PAGE, LOCKS } from './constants.mjs';
+export { detect, getUserAgent } from './detect.mjs';
+import 'node:fs/promises';
+import 'node:path';
+import 'node:process';