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/virtual-modules/live-config.js

@@ -0,0 +1,37 @@
+import * as z from "zod";
+import { defineLiveCollection } from "../content/config.js";
+function createErrorFunction(message) {
+  return () => {
+    const error = new Error(`The ${message}() function is not available in live config files.`);
+    const stackLines = error.stack?.split("\n");
+    if (stackLines && stackLines.length > 1) {
+      stackLines.splice(1, 1);
+      error.stack = stackLines.join("\n");
+    }
+    throw error;
+  };
+}
+const getCollection = createErrorFunction("getCollection");
+const render = createErrorFunction("render");
+const getEntry = createErrorFunction("getEntry");
+const getEntryBySlug = createErrorFunction("getEntryBySlug");
+const getDataEntryById = createErrorFunction("getDataEntryById");
+const getEntries = createErrorFunction("getEntries");
+const reference = createErrorFunction("reference");
+const getLiveCollection = createErrorFunction("getLiveCollection");
+const getLiveEntry = createErrorFunction("getLiveEntry");
+const defineCollection = createErrorFunction("defineCollection");
+export {
+  defineCollection,
+  defineLiveCollection,
+  getCollection,
+  getDataEntryById,
+  getEntries,
+  getEntry,
+  getEntryBySlug,
+  getLiveCollection,
+  getLiveEntry,
+  reference,
+  render,
+  z
+};