[Playground] Add Engine user transactions example to playground

apps/playground-web/package.json

@@ -13,6 +13,7 @@
     "@radix-ui/react-switch": "^1.2.5",
     "@radix-ui/react-tooltip": "1.2.7",
     "@tanstack/react-query": "5.81.5",
+    "@thirdweb-dev/engine": "workspace:*",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "date-fns": "4.1.0",

apps/playground-web/src/app/engine/users/page.tsx

@@ -0,0 +1,97 @@
+import type { Metadata } from "next";
+import { GatewayPreview } from "@/components/account-abstraction/gateway";
+import { PageLayout } from "@/components/blocks/APIHeader";
+import { CodeExample } from "@/components/code/code-example";
+import ThirdwebProvider from "@/components/thirdweb-provider";
+import { metadataBase } from "@/lib/constants";
+
+export const metadata: Metadata = {
+  description: "Transactions from user wallets with monitoring and retries",
+  metadataBase,
+  title: "User Transactions | thirdweb",
+};
+
+export default function Page() {
+  return (
+    <ThirdwebProvider>
+      <PageLayout
+        description={
+          <>Transactions from user wallets with monitoring and retries.</>
+        }
+        docsLink="https://portal.thirdweb.com/engine?utm_source=playground"
+        title="User Transactions"
+      >
+        <UserTransactions />
+      </PageLayout>
+    </ThirdwebProvider>
+  );
+}
+
+function UserTransactions() {
+  return (
+    <>
+      <CodeExample
+        code={`\
+import { inAppWallet } from "thirdweb/wallets/in-app";
+import { ConnectButton, useActiveAccount } from "thirdweb/react";
+
+const wallet = inAppWallet();
+
+function App() {
+  const activeWallet = useActiveWallet();
+
+   const handleClick = async () => {
+    const walletAddress = activeWallet?.getAccount()?.address;
+     // transactions are a simple POST request to the engine API
+	 // or use the @thirdweb-dev/engine type-safe JS SDK
+    const response = await fetch(
+	"https://api.thirdweb.com/v1/contract/write",
+	{
+		method: "POST",
+		headers: {
+		"Content-Type": "application/json",
+		"x-client-id": "<your-project-client-id>",
+		// uses the in-app wallet's auth token to authenticate the request
+		"Authorization": "Bearer " + activeWallet?.getAuthToken?.(),
+		},
+		body: JSON.stringify({
+			chainId: "84532",
+		calls: [
+			{
+			contractAddress: "0x...",
+			method: "function claim(address to, uint256 amount)",
+			params: [walletAddress, "1"],
+			},
+		],
+		}),
+    });
+  };
+
+  return (
+    <>
+      <ConnectButton
+        client={client}
+        wallet={[wallet]}
+        connectButton={{
+          label: "Login to mint!",
+        }}
+      />
+      <Button
+        onClick={handleClick}
+      >
+        Mint
+      </Button>
+    </>
+  );
+}`}
+        header={{
+          description:
+            "Engine can queue, monitor, and retry transactions from your users in-app wallets. All transactions and analytics will be displayed in your developer dashboard.",
+          title: "Transactions from User Wallets",
+        }}
+        lang="tsx"
+        preview={<GatewayPreview />}
+      />
+    </>
+  );
+}

apps/playground-web/src/app/navLinks.ts

@@ -116,6 +116,10 @@ const engineSidebarLinks: SidebarLink = {
   expanded: false,
   isCollapsible: false,
   links: [
+    {
+      href: "/engine/users",
+      name: "From User Wallets",
+    },
     {
       href: "/engine/airdrop",
       name: "Airdrop",