헬스체크 추가

backend/internal/handler/auth_handler.go

@@ -49,16 +49,12 @@ func GenerateSecureToken(length int) string {
 	return hex.EncodeToString(b)
 }
 
-func NewAuthHandler() *AuthHandler {
-	redisService, err := service.NewRedisService()
-	if err != nil {
-		log.Fatalf("Failed to connect to Redis: %v", err)
-	}
-
+func NewAuthHandler(redisService *service.RedisService) *AuthHandler {
 	projectID := os.Getenv("DESCOPE_PROJECT_ID")
 	managementKey := os.Getenv("DESCOPE_MANAGEMENT_KEY")
 
 	var descopeClient *client.DescopeClient
+	var err error
 	if projectID != "" {
 		descopeClient, err = client.NewWithConfig(&client.Config{
 			ProjectID:     projectID,