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-editorconfig.js

@@ -0,0 +1,26 @@
+Prism.languages.editorconfig = {
+	// https://editorconfig-specification.readthedocs.io
+	'comment': /[;#].*/,
+	'section': {
+		pattern: /(^[ \t]*)\[.+\]/m,
+		lookbehind: true,
+		alias: 'selector',
+		inside: {
+			'regex': /\\\\[\[\]{},!?.*]/, // Escape special characters with '\\'
+			'operator': /[!?]|\.\.|\*{1,2}/,
+			'punctuation': /[\[\]{},]/
+		}
+	},
+	'key': {
+		pattern: /(^[ \t]*)[^\s=]+(?=[ \t]*=)/m,
+		lookbehind: true,
+		alias: 'attr-name'
+	},
+	'value': {
+		pattern: /=.*/,
+		alias: 'attr-value',
+		inside: {
+			'punctuation': /^=/
+		}
+	}
+};