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/deno-kv-node.d.mts

@@ -0,0 +1,8 @@
+import { openKv, type Kv } from "@deno/kv";
+export interface DenoKvNodeOptions {
+    base?: string;
+    path?: string;
+    openKvOptions?: Parameters<typeof openKv>[1];
+}
+declare const _default: (opts: DenoKvNodeOptions) => import("..").Driver<DenoKvNodeOptions, Kv | Promise<Kv>>;
+export default _default;