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/unstorage/drivers/utils/cloudflare.mjs

@@ -0,0 +1,29 @@
+import { createError } from "./index.mjs";
+export function getBinding(binding) {
+  let bindingName = "[binding]";
+  if (typeof binding === "string") {
+    bindingName = binding;
+    binding = globalThis[bindingName] || globalThis.__env__?.[bindingName];
+  }
+  if (!binding) {
+    throw createError(
+      "cloudflare",
+      `Invalid binding \`${bindingName}\`: \`${binding}\``
+    );
+  }
+  for (const key of ["get", "put", "delete"]) {
+    if (!(key in binding)) {
+      throw createError(
+        "cloudflare",
+        `Invalid binding \`${bindingName}\`: \`${key}\` key is missing`
+      );
+    }
+  }
+  return binding;
+}
+export function getKVBinding(binding = "STORAGE") {
+  return getBinding(binding);
+}
+export function getR2Binding(binding = "BUCKET") {
+  return getBinding(binding);
+}