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/css-tree/cjs/tokenizer/adopt-buffer.cjs

@@ -0,0 +1,13 @@
+'use strict';
+
+const MIN_SIZE = 16 * 1024;
+
+function adoptBuffer(buffer = null, size) {
+    if (buffer === null || buffer.length < size) {
+        return new Uint32Array(Math.max(size + 1024, MIN_SIZE));
+    }
+
+    return buffer;
+}
+
+exports.adoptBuffer = adoptBuffer;