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/prismjs/plugins/highlight-keywords/prism-highlight-keywords.js

@@ -0,0 +1,14 @@
+(function () {
+
+	if (typeof Prism === 'undefined') {
+		return;
+	}
+
+	Prism.hooks.add('wrap', function (env) {
+		if (env.type !== 'keyword') {
+			return;
+		}
+		env.classes.push('keyword-' + env.content);
+	});
+
+}());

node_modules/prismjs/plugins/highlight-keywords/prism-highlight-keywords.min.js

@@ -0,0 +1 @@
+"undefined"!=typeof Prism&&Prism.hooks.add("wrap",(function(e){"keyword"===e.type&&e.classes.push("keyword-"+e.content)}));