// S3 patterns
        if (lowerEndpoint.contains(".amazonaws.com") || lowerEndpoint.contains("s3.") || lowerEndpoint.contains("s3-")) {
            return StorageType.S3;
        }

        // Default to S3-compatible (MinIO, etc.)
        return StorageType.S3_COMPAT;
    }

    /**
     * Creates a StorageClient based on FessConfig.
     *
     * @param fessConfig the Fess configuration