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/merge-affix-symbol.js

@@ -0,0 +1,47 @@
+/**
+ * @typedef {import('nlcst').Paragraph} Paragraph
+ */
+
+import {toString} from 'nlcst-to-string'
+import {modifyChildren} from 'unist-util-modify-children'
+// Closing or final punctuation, or terminal markers that should still be
+// included in the previous sentence, even though they follow the sentence’s
+// terminal marker.
+import {affixSymbol} from '../expressions.js'
+
+// Move certain punctuation following a terminal marker (thus in the next
+// sentence) to the previous sentence.
+export const mergeAffixSymbol = modifyChildren(
+  /**
+   * @type {import('unist-util-modify-children').Modifier<Paragraph>}
+   */
+  function (child, index, parent) {
+    if ('children' in child && child.children.length > 0 && index > 0) {
+      const previous = parent.children[index - 1]
+      const first = child.children[0]
+      const second = child.children[1]
+
+      if (
+        previous &&
+        previous.type === 'SentenceNode' &&
+        (first.type === 'SymbolNode' || first.type === 'PunctuationNode') &&
+        affixSymbol.test(toString(first))
+      ) {
+        child.children.shift() // Remove `first`.
+        previous.children.push(first)
+
+        // Update position.
+        if (first.position && previous.position) {
+          previous.position.end = first.position.end
+        }
+
+        if (second && second.position && child.position) {
+          child.position.start = second.position.start
+        }
+
+        // Next, iterate over the previous node again.
+        return index - 1
+      }
+    }
+  }
+)