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-bbcode.js

@@ -0,0 +1,29 @@
+Prism.languages.bbcode = {
+	'tag': {
+		pattern: /\[\/?[^\s=\]]+(?:\s*=\s*(?:"[^"]*"|'[^']*'|[^\s'"\]=]+))?(?:\s+[^\s=\]]+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s'"\]=]+))*\s*\]/,
+		inside: {
+			'tag': {
+				pattern: /^\[\/?[^\s=\]]+/,
+				inside: {
+					'punctuation': /^\[\/?/
+				}
+			},
+			'attr-value': {
+				pattern: /=\s*(?:"[^"]*"|'[^']*'|[^\s'"\]=]+)/,
+				inside: {
+					'punctuation': [
+						/^=/,
+						{
+							pattern: /^(\s*)["']|["']$/,
+							lookbehind: true
+						}
+					]
+				}
+			},
+			'punctuation': /\]/,
+			'attr-name': /[^\s=\]]+/
+		}
+	}
+};
+
+Prism.languages.shortcode = Prism.languages.bbcode;