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/css-select/lib/pseudo-selectors/pseudos.d.ts

@@ -0,0 +1,6 @@
+import type { PseudoSelector } from "css-what";
+import type { InternalOptions } from "../types.js";
+export declare type Pseudo = <Node, ElementNode extends Node>(elem: ElementNode, options: InternalOptions<Node, ElementNode>, subselect?: string | null) => boolean;
+export declare const pseudos: Record<string, Pseudo>;
+export declare function verifyPseudoArgs<T extends Array<unknown>>(func: (...args: T) => boolean, name: string, subselect: PseudoSelector["data"], argIndex: number): void;
+//# sourceMappingURL=pseudos.d.ts.map