feat: increased security

cmd/main.go

@@ -35,7 +35,10 @@ func run() error {
 	address := fmt.Sprintf("0.0.0.0:%s", cfg.ServerPort)
 
 	repo := repositories.NewLinksRepository(database)
-	service := services.NewLinksService(repo)
+	service, err := services.NewLinksService(repo)
+	if err != nil {
+		log.Fatalf("failed to initialize links service: %v", err)
+	}
 	handler := handlers.NewLinksHandler(service, cfg.ServerHost, cfg.ServerPort)
 
 	server := httpserver.NewServer(address, handler)