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/runtime/server/astro-component.d.ts

@@ -0,0 +1,9 @@
+import type { PropagationHint } from '../../types/public/internal.js';
+import type { AstroComponentFactory } from './render/index.js';
+interface CreateComponentOptions {
+    factory: AstroComponentFactory;
+    moduleId?: string;
+    propagation?: PropagationHint;
+}
+export declare function createComponent(arg1: AstroComponentFactory | CreateComponentOptions, moduleId?: string, propagation?: PropagationHint): AstroComponentFactory;
+export {};