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/parse-latin/lib/plugin/patch-position.js

@@ -0,0 +1,49 @@
+/**
+ * @typedef {import('unist').Node} Node
+ * @typedef {import('nlcst').Paragraph} Paragraph
+ * @typedef {import('unist').Position} Position
+ * @typedef {import('nlcst').Root} Root
+ * @typedef {import('nlcst').Sentence} Sentence
+ */
+
+import {visitChildren} from 'unist-util-visit-children'
+
+// Patch the position on a parent node based on its first and last child.
+export const patchPosition = visitChildren(
+  /**
+   * @type {import('unist-util-visit-children').Visitor<Paragraph | Root | Sentence>}
+   */
+  function (child, index, node) {
+    const siblings = node.children
+
+    if (
+      child.position &&
+      index < 1 &&
+      /* c8 ignore next */
+      (!node.position || !node.position.start)
+    ) {
+      patch(node)
+      node.position.start = child.position.start
+    }
+
+    if (
+      child.position &&
+      index === siblings.length - 1 &&
+      (!node.position || !node.position.end)
+    ) {
+      patch(node)
+      node.position.end = child.position.end
+    }
+  }
+)
+
+/**
+ * @param {Node} node
+ * @returns {asserts node is Node & {position: Position}}
+ */
+function patch(node) {
+  if (!node.position) {
+    // @ts-expect-error: fine, we’ll fill it later.
+    node.position = {}
+  }
+}