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/lib/automatic-runtime-html.js

@@ -0,0 +1,9 @@
+// Note: types exposed from `automatic-runtime-html.d.ts` because TS has bugs
+// when generating types.
+import {createAutomaticRuntime} from './create-automatic-runtime.js'
+import {h} from './index.js'
+
+// Export `JSX` as a global for TypeScript.
+export * from './jsx-automatic.js'
+
+export const {Fragment, jsxDEV, jsxs, jsx} = createAutomaticRuntime(h)