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-gcode.js

@@ -0,0 +1,16 @@
+Prism.languages.gcode = {
+	'comment': /;.*|\B\(.*?\)\B/,
+	'string': {
+		pattern: /"(?:""|[^"])*"/,
+		greedy: true
+	},
+	'keyword': /\b[GM]\d+(?:\.\d+)?\b/,
+	'property': /\b[A-Z]/,
+	'checksum': {
+		pattern: /(\*)\d+/,
+		lookbehind: true,
+		alias: 'number'
+	},
+	// T0:0:0
+	'punctuation': /[:*]/
+};