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/vite-plugin-astro-server/server-state.js

@@ -0,0 +1,38 @@
+function createServerState() {
+  return {
+    routes: /* @__PURE__ */ new Map(),
+    state: "fresh"
+  };
+}
+function setRouteError(serverState, pathname, error) {
+  if (serverState.routes.has(pathname)) {
+    const routeState = serverState.routes.get(pathname);
+    routeState.state = "error";
+    routeState.error = error;
+  } else {
+    const routeState = {
+      state: "error",
+      error
+    };
+    serverState.routes.set(pathname, routeState);
+  }
+  serverState.state = "error";
+  serverState.error = error;
+}
+function setServerError(serverState, error) {
+  serverState.state = "error";
+  serverState.error = error;
+}
+function clearRouteError(serverState, pathname) {
+  if (serverState.routes.has(pathname)) {
+    serverState.routes.delete(pathname);
+  }
+  serverState.state = "fresh";
+  serverState.error = void 0;
+}
+export {
+  clearRouteError,
+  createServerState,
+  setRouteError,
+  setServerError
+};