add node server example and CORS header

Author: mme

apps/node/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "@apps/node",
+  "version": "0.0.1",
+  "private": true,
+  "scripts": {
+    "dev": "tsx watch src/index.ts",
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "check-types": "tsc --noEmit"
+  },
+  "devDependencies": {
+    "@types/node": "^22.10.7",
+    "tsx": "^4.19.2",
+    "typescript": "^5.8.2"
+  },
+  "dependencies": {
+    "@copilotkitnext/agent": "workspace:^",
+    "@copilotkitnext/runtime": "workspace:^",
+    "@hono/node-server": "^1.13.6"
+  }
+}

apps/node/src/index.ts

@@ -0,0 +1,23 @@
+import { CopilotRuntime, createCopilotEndpoint, VERSION } from "@copilotkitnext/runtime";
+import { BasicAgent } from "@copilotkitnext/agent";
+import { serve } from "@hono/node-server";
+
+// Example: Creating a runtime instance
+// Note: BasicAgent is used here to verify the import works
+// In practice, agents would be passed with proper AbstractAgent interface
+const runtime = new CopilotRuntime({
+  agents: {
+    default: new BasicAgent({
+      model: "openai/gpt-4o-mini",
+      maxSteps: 5,
+      temperature: 0.7,
+    }),
+  },
+});
+
+const endpoint = createCopilotEndpoint({ basePath: "/api/copilotkit", runtime });
+
+serve({
+  fetch: endpoint.fetch,
+  port: 8787,
+});

apps/node/tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "extends": "@copilotkitnext/typescript-config/base.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "dist",
+    "module": "commonjs",
+    "target": "ES2022",
+    "lib": ["ES2022"],
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}