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/hastscript/index.d.ts

@@ -0,0 +1,5 @@
+export type Child = import("./lib/create-h.js").Child;
+export type Properties = import("./lib/create-h.js").Properties;
+export type Result = import("./lib/create-h.js").Result;
+export { h, s } from "./lib/index.js";
+//# sourceMappingURL=index.d.ts.map