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/info/infra/cli-debug-info-provider.d.ts

@@ -0,0 +1,15 @@
+import type { AstroConfig } from '../../../types/public/index.js';
+import type { AstroVersionProvider, OperatingSystemProvider } from '../../definitions.js';
+import type { DebugInfoProvider, NodeVersionProvider, PackageManager } from '../definitions.js';
+import type { DebugInfo } from '../domain/debug-info.js';
+export declare class CliDebugInfoProvider implements DebugInfoProvider {
+    #private;
+    constructor({ config, astroVersionProvider, packageManager, operatingSystemProvider, nodeVersionProvider, }: {
+        config: Pick<AstroConfig, 'output' | 'adapter' | 'integrations'>;
+        astroVersionProvider: AstroVersionProvider;
+        packageManager: PackageManager;
+        operatingSystemProvider: OperatingSystemProvider;
+        nodeVersionProvider: NodeVersionProvider;
+    });
+    get(): Promise<DebugInfo>;
+}