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-core-commonmark/lib/line-ending.js

@@ -0,0 +1,33 @@
+/**
+ * @import {
+ *   Construct,
+ *   State,
+ *   TokenizeContext,
+ *   Tokenizer
+ * } from 'micromark-util-types'
+ */
+
+import { factorySpace } from 'micromark-factory-space';
+import { markdownLineEnding } from 'micromark-util-character';
+/** @type {Construct} */
+export const lineEnding = {
+  name: 'lineEnding',
+  tokenize: tokenizeLineEnding
+};
+
+/**
+ * @this {TokenizeContext}
+ *   Context.
+ * @type {Tokenizer}
+ */
+function tokenizeLineEnding(effects, ok) {
+  return start;
+
+  /** @type {State} */
+  function start(code) {
+    effects.enter("lineEnding");
+    effects.consume(code);
+    effects.exit("lineEnding");
+    return factorySpace(effects, ok, "linePrefix");
+  }
+}