feat(ui): add type filter toggles

server/index.ts

@@ -0,0 +1,20 @@
+import express from 'express';
+import cors from 'cors';
+
+const app = express();
+const PORT = 3001;
+
+// CORS middleware for frontend communication
+app.use(cors({
+  origin: 'http://localhost:3000',
+  credentials: true,
+}));
+
+// Health check endpoint
+app.get('/api/health', (req, res) => {
+  res.json({ status: 'ok' });
+});
+
+app.listen(PORT, () => {
+  console.log(`Server running on http://localhost:${PORT}`);
+});