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/unstorage/drivers/planetscale.d.cts

@@ -0,0 +1,8 @@
+import type { Connection } from "@planetscale/database";
+export interface PlanetscaleDriverOptions {
+    url?: string;
+    table?: string;
+    boostCache?: boolean;
+}
+declare const _default: (opts: PlanetscaleDriverOptions | undefined) => import("..").Driver<PlanetscaleDriverOptions | undefined, Connection>;
+export default _default;