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/hast-util-to-html/lib/omission/omission.d.ts

@@ -0,0 +1,17 @@
+/**
+ * Factory to check if a given node can have a tag omitted.
+ *
+ * @param {Record<string, OmitHandle>} handlers
+ *   Omission handlers, where each key is a tag name, and each value is the
+ *   corresponding handler.
+ * @returns {OmitHandle}
+ *   Whether to omit a tag of an element.
+ */
+export function omission(handlers: Record<string, OmitHandle>): OmitHandle;
+/**
+ * Check if a tag can be omitted.
+ */
+export type OmitHandle = (element: Element, index: number | undefined, parent: Parents | undefined) => boolean;
+import type { Element } from 'hast';
+import type { Parents } from 'hast';
+//# sourceMappingURL=omission.d.ts.map