3ddelano

<script>
    const fileInput = document.getElementById('file-input');
    const uploadBtn = document.getElementById('upload-btn');
    const progressEl = document.getElementById('upload-progress');

    // Enable submit button when file is selected
    fileInput.addEventListener('change', () => uploadBtn.disabled = !fileInput.files.length);

    document.getElementById('version-upload-form').addEventListener('submit', async function(e) {
        e.preventDefault();