se if (nextTab === 'import') {
                if (!setupInput.value) {
                    alert('Please select a setup type');
                    return;
                }
            } else if (nextTab === 'summary') {
                const uploadId = getStoredUploadId();
                if (!uploadId) {
                    alert('Please upload files first');
                    return;
                }
                try {
                    const classNames = document.getElementById('class-names').