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/oniguruma-parser/dist/generator/generate.d.ts

@@ -0,0 +1,11 @@
+import type { OnigurumaAst } from '../parser/parse.js';
+type OnigurumaRegex = {
+    pattern: string;
+    flags: string;
+};
+/**
+Generates an Oniguruma `pattern` and `flags` from an `OnigurumaAst`.
+*/
+declare function generate(ast: OnigurumaAst): OnigurumaRegex;
+export { type OnigurumaRegex, generate, };
+//# sourceMappingURL=generate.d.ts.map