chore: import upstream snapshot with attribution

examples/showcases/daytona-runcode/app/api/copilotkit-single/route.ts

@@ -0,0 +1,62 @@
+import {
+  CopilotRuntime,
+  InMemoryAgentRunner,
+  createCopilotEndpointSingleRoute,
+  BuiltInAgent,
+  defineTool,
+} from "@copilotkit/runtime/v2";
+import { Daytona } from "@daytonaio/sdk";
+import { handle } from "hono/vercel";
+import { z } from "zod";
+
+// --- The cookbook recipe: a server tool that runs code in a Daytona sandbox ---
+const daytona = new Daytona(); // reads DAYTONA_API_KEY
+
+const runCode = defineTool({
+  name: "runCode",
+  description:
+    "Execute code in an isolated Daytona sandbox and return its output.",
+  parameters: z.object({
+    code: z.string().describe("The code to run in the sandbox"),
+    language: z
+      .enum(["python", "typescript", "javascript"])
+      .default("python")
+      .describe("Language runtime for the code"),
+  }),
+  execute: async ({ code, language }) => {
+    const sandbox = await daytona.create({ language });
+    try {
+      const res = await sandbox.process.codeRun(code);
+      return { stdout: res.result, exitCode: res.exitCode };
+    } finally {
+      await sandbox.delete();
+    }
+  },
+});
+
+const agent = new BuiltInAgent({
+  model: process.env.MODEL ?? "openai:gpt-5.4-mini",
+  prompt:
+    "You are a coding assistant. When the user asks you to run, execute, or compute " +
+    "something with code, use the runCode tool to run it in a Daytona sandbox. " +
+    "Default to Python unless told otherwise. " +
+    "IMPORTANT: the tool's output (stdout + exit code) is rendered directly to the user " +
+    "in a separate UI panel; the user can already see it. Do NOT repeat, restate, or " +
+    "include the stdout or the generated code in your reply. Acknowledge briefly (a single " +
+    "short sentence) or stay silent. Never reproduce content that already appears in the " +
+    "tool card.",
+  tools: [runCode],
+  maxSteps: 2,
+});
+
+const runtime = new CopilotRuntime({
+  agents: { default: agent },
+  runner: new InMemoryAgentRunner(),
+});
+
+const app = createCopilotEndpointSingleRoute({
+  runtime,
+  basePath: "/api/copilotkit-single",
+});
+
+export const POST = handle(app);