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/micromark-util-combine-extensions/index.d.ts

@@ -0,0 +1,22 @@
+/**
+ * Combine multiple syntax extensions into one.
+ *
+ * @param {ReadonlyArray<Extension>} extensions
+ *   List of syntax extensions.
+ * @returns {NormalizedExtension}
+ *   A single combined extension.
+ */
+export function combineExtensions(extensions: ReadonlyArray<Extension>): NormalizedExtension;
+/**
+ * Combine multiple HTML extensions into one.
+ *
+ * @param {ReadonlyArray<HtmlExtension>} htmlExtensions
+ *   List of HTML extensions.
+ * @returns {HtmlExtension}
+ *   Single combined HTML extension.
+ */
+export function combineHtmlExtensions(htmlExtensions: ReadonlyArray<HtmlExtension>): HtmlExtension;
+import type { Extension } from 'micromark-util-types';
+import type { NormalizedExtension } from 'micromark-util-types';
+import type { HtmlExtension } from 'micromark-util-types';
+//# sourceMappingURL=index.d.ts.map