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/client/dev-toolbar/ui-library/icon.js

@@ -0,0 +1,46 @@
+import { getIconElement, isDefinedIcon } from "./icons.js";
+class DevToolbarIcon extends HTMLElement {
+  _icon = void 0;
+  shadowRoot;
+  get icon() {
+    return this._icon;
+  }
+  set icon(name) {
+    this._icon = name;
+    this.buildTemplate();
+  }
+  constructor() {
+    super();
+    this.shadowRoot = this.attachShadow({ mode: "open" });
+    if (this.hasAttribute("icon")) {
+      this.icon = this.getAttribute("icon");
+    } else {
+      this.buildTemplate();
+    }
+  }
+  getIconHTML(icon) {
+    if (icon && isDefinedIcon(icon)) {
+      return getIconElement(icon)?.outerHTML ?? "";
+    }
+    return "<slot />";
+  }
+  buildTemplate() {
+    this.shadowRoot.innerHTML = `
+			<style>
+				svg {
+					width: 100%;
+					height: 100%;
+				}
+
+				@media (forced-colors: active) {
+					svg path[fill="#fff"] {
+						fill: black;
+					}
+				}
+			</style>
+${this.getIconHTML(this._icon)}`;
+  }
+}
+export {
+  DevToolbarIcon
+};