init commit

server.js

@@ -0,0 +1,29 @@
+
+import express from 'express';
+import http from 'http';
+import { Server } from 'socket.io';
+
+const app = express();
+const server = http.createServer(app);
+const io = new Server(server, {
+  cors: {
+    origin: "http://localhost:5173", // allow Vite frontend
+    methods: ["GET", "POST"]
+  }
+});
+
+// Socket.IO events
+io.on("connection", (socket) => {
+  console.log("Client connected:", socket.id);
+
+  socket.on("paramUpdate", (data) => {
+    socket.broadcast.emit("paramUpdate", data);
+  });
+
+  socket.on("disconnect", () => {
+    console.log("Client disconnected:", socket.id);
+  });
+});
+
+app.use(express.static('frontend/dist'));
+server.listen(3000, () => console.log('Server running on http://localhost'));