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/optimizer/transforms/extract-suffix.d.ts

@@ -0,0 +1,9 @@
+import type { Visitor } from '../../traverser/traverse.js';
+/**
+Extract nodes at the end of every alternative into a suffix.
+Ex: `aa$|bba$|ca$` -> `(?:a|bb|c)a$`.
+Also works within groups.
+*/
+declare const extractSuffix: Visitor;
+export { extractSuffix, };
+//# sourceMappingURL=extract-suffix.d.ts.map