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/zod/v3/helpers/enumUtil.d.ts

@@ -0,0 +1,8 @@
+export declare namespace enumUtil {
+    type UnionToIntersectionFn<T> = (T extends unknown ? (k: () => T) => void : never) extends (k: infer Intersection) => void ? Intersection : never;
+    type GetUnionLast<T> = UnionToIntersectionFn<T> extends () => infer Last ? Last : never;
+    type UnionToTuple<T, Tuple extends unknown[] = []> = [T] extends [never] ? Tuple : UnionToTuple<Exclude<T, GetUnionLast<T>>, [GetUnionLast<T>, ...Tuple]>;
+    type CastToStringTuple<T> = T extends [string, ...string[]] ? T : never;
+    export type UnionToTupleString<T> = CastToStringTuple<UnionToTuple<T>>;
+    export {};
+}