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/components/prism-jexl.js

@@ -0,0 +1,14 @@
+Prism.languages.jexl = {
+	'string': /(["'])(?:\\[\s\S]|(?!\1)[^\\])*\1/,
+	'transform': {
+		pattern: /(\|\s*)[a-zA-Zа-яА-Я_\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF$][\wа-яА-Я\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF$]*/,
+		alias: 'function',
+		lookbehind: true
+	},
+	'function': /[a-zA-Zа-яА-Я_\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF$][\wа-яА-Я\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF$]*\s*(?=\()/,
+	'number': /\b\d+(?:\.\d+)?\b|\B\.\d+\b/,
+	'operator': /[<>!]=?|-|\+|&&|==|\|\|?|\/\/?|[?:*^%]/,
+	'boolean': /\b(?:false|true)\b/,
+	'keyword': /\bin\b/,
+	'punctuation': /[{}[\](),.]/,
+};