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/indexedb.d.cts

@@ -0,0 +1,7 @@
+export interface IDBKeyvalOptions {
+    base?: string;
+    dbName?: string;
+    storeName?: string;
+}
+declare const _default: (opts: IDBKeyvalOptions | undefined) => import("..").Driver<IDBKeyvalOptions | undefined, never>;
+export default _default;