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/render/server-islands.d.ts

@@ -0,0 +1,24 @@
+import type { SSRResult } from '../../../types/public/internal.js';
+import { type ThinHead } from './astro/head-and-content.js';
+import type { RenderDestination } from './common.js';
+import { type ComponentSlots } from './slot.js';
+export declare function containsServerDirective(props: Record<string | number, any>): boolean;
+export declare class ServerIslandComponent {
+    result: SSRResult;
+    props: Record<string | number, any>;
+    slots: ComponentSlots;
+    displayName: string;
+    hostId: string | undefined;
+    islandContent: string | undefined;
+    componentPath: string | undefined;
+    componentExport: string | undefined;
+    componentId: string | undefined;
+    constructor(result: SSRResult, props: Record<string | number, any>, slots: ComponentSlots, displayName: string);
+    init(): Promise<ThinHead>;
+    render(destination: RenderDestination): Promise<void>;
+    getComponentPath(): string;
+    getComponentExport(): string;
+    getHostId(): Promise<string>;
+    getIslandContent(): Promise<string>;
+}
+export declare const renderServerIslandRuntime: () => string;