feat: Add role-based access control tests and update server

backend/src/server.js

@@ -17,6 +17,11 @@ app.use(express.json());
 
 app.get('/health', (_req, res) => res.json({ status: 'ok' }));
 
+// Test route for role middleware
+app.get('/test-role', (_req, res) => {
+  res.status(200).json({ message: 'Test route for role middleware' });
+});
+
 // Metrics endpoint
 app.get('/metrics', (_req, res) => {
   const uptime = process.uptime();