// Triggers a client-side file download from in-memory text (no server round-trip).
// Used e.g. by the EKÁER grid to save the generated trade-card XML as a file.
window.downloadFileFromText = function (filename, content, mime) {
    try {
        const blob = new Blob([content], { type: mime || 'application/octet-stream' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = filename || 'download';
        document.body.appendChild(a);
        a.click();
        setTimeout(function () {
            document.body.removeChild(a);
            URL.revokeObjectURL(url);
        }, 0);
    } catch (e) {
        console.error('downloadFileFromText failed', e);
    }
};