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/astro/dist/cli/docs/definitions.d.ts

@@ -0,0 +1,4 @@
+import type { CloudIde } from './domain/cloud-ide.js';
+export interface CloudIdeProvider {
+    readonly name: CloudIde | null;
+}