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-smalltalk.js

@@ -0,0 +1,38 @@
+Prism.languages.smalltalk = {
+	'comment': {
+		pattern: /"(?:""|[^"])*"/,
+		greedy: true
+	},
+	'char': {
+		pattern: /\$./,
+		greedy: true
+	},
+	'string': {
+		pattern: /'(?:''|[^'])*'/,
+		greedy: true
+	},
+	'symbol': /#[\da-z]+|#(?:-|([+\/\\*~<>=@%|&?!])\1?)|#(?=\()/i,
+	'block-arguments': {
+		pattern: /(\[\s*):[^\[|]*\|/,
+		lookbehind: true,
+		inside: {
+			'variable': /:[\da-z]+/i,
+			'punctuation': /\|/
+		}
+	},
+	'temporary-variables': {
+		pattern: /\|[^|]+\|/,
+		inside: {
+			'variable': /[\da-z]+/i,
+			'punctuation': /\|/
+		}
+	},
+	'keyword': /\b(?:new|nil|self|super)\b/,
+	'boolean': /\b(?:false|true)\b/,
+	'number': [
+		/\d+r-?[\dA-Z]+(?:\.[\dA-Z]+)?(?:e-?\d+)?/,
+		/\b\d+(?:\.\d+)?(?:e-?\d+)?/
+	],
+	'operator': /[<=]=?|:=|~[~=]|\/\/?|\\\\|>[>=]?|[!^+\-*&|,@]/,
+	'punctuation': /[.;:?\[\](){}]/
+};