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/strip-ansi/index.js

@@ -0,0 +1,19 @@
+import ansiRegex from 'ansi-regex';
+
+const regex = ansiRegex();
+
+export default function stripAnsi(string) {
+	if (typeof string !== 'string') {
+		throw new TypeError(`Expected a \`string\`, got \`${typeof string}\``);
+	}
+
+	// Fast path: ANSI codes require ESC (7-bit) or CSI (8-bit) introducer
+	if (!string.includes('\u001B') && !string.includes('\u009B')) {
+		return string;
+	}
+
+	// Even though the regex is global, we don't need to reset the `.lastIndex`
+	// because unlike `.exec()` and `.test()`, `.replace()` does it automatically
+	// and doing it manually has a performance penalty.
+	return string.replace(regex, '');
+}