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-roboconf.js

@@ -0,0 +1,27 @@
+Prism.languages.roboconf = {
+	'comment': /#.*/,
+	'keyword': {
+		'pattern': /(^|\s)(?:(?:external|import)\b|(?:facet|instance of)(?=[ \t]+[\w-]+[ \t]*\{))/,
+		lookbehind: true
+	},
+	'component': {
+		pattern: /[\w-]+(?=[ \t]*\{)/,
+		alias: 'variable'
+	},
+	'property': /[\w.-]+(?=[ \t]*:)/,
+	'value': {
+		pattern: /(=[ \t]*(?![ \t]))[^,;]+/,
+		lookbehind: true,
+		alias: 'attr-value'
+	},
+	'optional': {
+		pattern: /\(optional\)/,
+		alias: 'builtin'
+	},
+	'wildcard': {
+		pattern: /(\.)\*/,
+		lookbehind: true,
+		alias: 'operator'
+	},
+	'punctuation': /[{},.;:=]/
+};