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/@capsizecss/unpack/dist/fs.mjs

@@ -0,0 +1,10 @@
+import { t as _fromBuffer } from "./shared-KjM_oZR2.mjs";
+import { readFile } from "node:fs/promises";
+
+//#region src/fs.ts
+const fromFile = async (path, options) => {
+	return _fromBuffer(await readFile(path), "fromFile", "path", options);
+};
+
+//#endregion
+export { fromFile };