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/client/dev-toolbar/apps/astro.d.ts

@@ -0,0 +1,20 @@
+export interface Integration {
+    name: string;
+    title: string;
+    description: string;
+    image?: string;
+    categories: string[];
+    repoUrl: string;
+    npmUrl: string;
+    homepageUrl: string;
+    official: boolean;
+    featured: number;
+    downloads: number;
+}
+declare const _default: {
+    id: string;
+    name: string;
+    icon: "astro:logo";
+    init(canvas: ShadowRoot, eventTarget: import("../helpers.js").ToolbarAppEventTarget): Promise<void>;
+};
+export default _default;