fix: Fix product page syntax errors

1. Remove duplicate/broken code in product tables section
2. Fix PostCSS config for Tailwind 4
3. Add @tailwindcss/postcss dependency
4. Remove --production flag from Dockerfile (sharp required)

All fixes enable successful Docker build with favicon working.

node_modules/astro/dist/vite-plugin-astro-server/resolve.js

@@ -0,0 +1,9 @@
+import { resolveIdToUrl } from "../core/viteUtils.js";
+function createResolve(loader, root) {
+  return async function(s) {
+    return await resolveIdToUrl(loader, s, root);
+  };
+}
+export {
+  createResolve
+};