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/util/siblings.d.ts

@@ -0,0 +1,36 @@
+/**
+ * Find applicable siblings in a direction.
+ *
+ * @template {Parents} Parent
+ *   Parent type.
+ * @param {Parent | undefined} parent
+ *   Parent.
+ * @param {number | undefined} index
+ *   Index of child in `parent`.
+ * @param {boolean | undefined} [includeWhitespace=false]
+ *   Whether to include whitespace (default: `false`).
+ * @returns {Parent extends {children: Array<infer Child>} ? Child | undefined : never}
+ *   Child of parent.
+ */
+export function siblingAfter<Parent extends Parents>(parent: Parent | undefined, index: number | undefined, includeWhitespace?: boolean | undefined): Parent extends {
+    children: Array<infer Child>;
+} ? Child | undefined : never;
+/**
+ * Find applicable siblings in a direction.
+ *
+ * @template {Parents} Parent
+ *   Parent type.
+ * @param {Parent | undefined} parent
+ *   Parent.
+ * @param {number | undefined} index
+ *   Index of child in `parent`.
+ * @param {boolean | undefined} [includeWhitespace=false]
+ *   Whether to include whitespace (default: `false`).
+ * @returns {Parent extends {children: Array<infer Child>} ? Child | undefined : never}
+ *   Child of parent.
+ */
+export function siblingBefore<Parent extends Parents>(parent: Parent | undefined, index: number | undefined, includeWhitespace?: boolean | undefined): Parent extends {
+    children: Array<infer Child>;
+} ? Child | undefined : never;
+import type { Parents } from 'hast';
+//# sourceMappingURL=siblings.d.ts.map