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-json5.js

@@ -0,0 +1,23 @@
+(function (Prism) {
+
+	var string = /("|')(?:\\(?:\r\n?|\n|.)|(?!\1)[^\\\r\n])*\1/;
+
+	Prism.languages.json5 = Prism.languages.extend('json', {
+		'property': [
+			{
+				pattern: RegExp(string.source + '(?=\\s*:)'),
+				greedy: true
+			},
+			{
+				pattern: /(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*:)/,
+				alias: 'unquoted'
+			}
+		],
+		'string': {
+			pattern: string,
+			greedy: true
+		},
+		'number': /[+-]?\b(?:NaN|Infinity|0x[a-fA-F\d]+)\b|[+-]?(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:[eE][+-]?\d+\b)?/
+	});
+
+}(Prism));