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/overlay.d.mts

@@ -0,0 +1,6 @@
+import type { Driver } from "..";
+export interface OverlayStorageOptions {
+    layers: Driver[];
+}
+declare const _default: (opts: OverlayStorageOptions) => Driver<OverlayStorageOptions, never>;
+export default _default;