add server

server/ws.js

@@ -0,0 +1,26 @@
+const { WebSocketServer } = require('ws');
+
+function setupWebSocket(server) {
+  const wss = new WebSocketServer({ server, path: '/ws' });
+
+  wss.on('connection', (ws) => {
+    console.log('[ws] Client connected');
+
+    ws.on('message', (data) => {
+      // TODO: handle watch/unwatch subscriptions from client
+      const msg = JSON.parse(data);
+      console.log('[ws] Received:', msg);
+    });
+
+    ws.on('close', () => {
+      console.log('[ws] Client disconnected');
+    });
+  });
+
+  // TODO: integrate chokidar file watching and broadcast changes
+  // This will be implemented once the sync strategy is finalized.
+
+  return wss;
+}
+
+module.exports = { setupWebSocket };