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/mdast-util-to-markdown/index.d.ts

@@ -0,0 +1,16 @@
+export type {
+  ConstructNameMap,
+  ConstructName,
+  Handle,
+  Handlers,
+  Info,
+  Join,
+  Map,
+  Options,
+  SafeConfig,
+  State,
+  Tracker,
+  Unsafe
+} from './lib/types.js'
+export {toMarkdown} from './lib/index.js'
+export {handle as defaultHandlers} from './lib/handle/index.js'