added cors support and started chat client

packages/orchestration-service/src/index.js

@@ -3,12 +3,22 @@ const express = require('express');
 const {getEnv} = require('@nexusai/shared');
 const chatRouter = require('./routes/chat');
 const sessionsRouter = require('./routes/sessions');
+const cors = require('cors');
 
 const app = express();
 app.use(express.json());
 
 const PORT = getEnv('PORT', '4000');  // Default to 4000 if PORT is not set
 
+app.use(cors({
+    origin: [
+        getEnv('CORS_ORIGIN', 'http://localhost:5173'),
+        'http://localhost:5173',
+    ],
+    methods: ['GET', 'POST', 'DELETE'],
+    allowedHeaders: ['Content-Type'],
+}))
+
 // Health check endpoint
 app.get('/health', (req, res) => {
     res.json({