fix(media): truncate long filename in download button

components/media/ConversionPreview.tsx

@@ -275,9 +275,11 @@ export function ConversionPreview({ job, onDownload, onRetry }: ConversionPrevie
           {/* Download button */}
           {job.status === 'completed' && job.result && (
             <Button onClick={handleDownload} className="w-full" variant="default" size="lg">
-              <Download className="h-4 w-4" />
-              Download{' '}
-              {generateOutputFilename(job.inputFile.name, job.outputFormat.extension)}
+              <Download className="h-4 w-4 shrink-0" />
+              <span className="truncate min-w-0">
+                Download{' '}
+                {generateOutputFilename(job.inputFile.name, job.outputFormat.extension)}
+              </span>
             </Button>
           )}