fix: Login 500, DB schema sync, Dashboard missing data, Major Refactoring

api.hyungi.net/config/routes.js

@@ -69,7 +69,7 @@ function setupRoutes(app) {
   app.use('/api/setup', setupRoutes);
 
   // Health check
-  app.use('/api', healthRoutes);
+  app.use('/api/health', healthRoutes);
 
   // 일반 API에 속도 제한 적용
   app.use('/api/', apiLimiter);