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/astro/dist/runtime/server/render/script.js

@@ -0,0 +1,17 @@
+import { createRenderInstruction } from "./instruction.js";
+async function renderScript(result, id) {
+  const inlined = result.inlinedScripts.get(id);
+  let content = "";
+  if (inlined != null) {
+    if (inlined) {
+      content = `<script type="module">${inlined}</script>`;
+    }
+  } else {
+    const resolved = await result.resolve(id);
+    content = `<script type="module" src="${result.userAssetsBase ? (result.base === "/" ? "" : result.base) + result.userAssetsBase : ""}${resolved}"></script>`;
+  }
+  return createRenderInstruction({ type: "script", id, content });
+}
+export {
+  renderScript
+};