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/update-check/index.d.ts

@@ -0,0 +1,18 @@
+export interface Config {
+	/** For how long to cache latest version (default: 1 day) */
+	interval?: number;
+
+	/** An npm distribution tag for comparision (default: 'latest') */
+	distTag?: string;
+}
+
+export interface Result {
+	/** The latest version from npm */
+	latest: string;
+
+	/** Has this result been retrieved from the local cache? */
+	fromCache: boolean;
+}
+
+/** Check if updates are available on npm for a given package */
+export default function(pkg: object, config?: Config): Promise<Result | null>;