Merge pull request 'Add report logos and configurable folder scan depth' (#2) from feat/report-logos-and-scan-depth into main

Reviewed-on: #2

Services/Export/WebExportService.cs

@@ -25,4 +25,13 @@ public class WebExportService
         var bytes = new UTF8Encoding(encoderShouldEmitUTF8Identifier: false).GetBytes(content);
         await _js.InvokeVoidAsync("sptb.downloadFile", fileName, "text/html;charset=utf-8", Convert.ToBase64String(bytes));
     }
+
+    /// <summary>
+    /// Downloads pre-encoded bytes (e.g. a ZIP or a merged report produced by
+    /// <see cref="ReportMergeHelper"/>) with an explicit MIME type.
+    /// </summary>
+    public async Task DownloadBytesAsync(byte[] content, string fileName, string mime)
+    {
+        await _js.InvokeVoidAsync("sptb.downloadFile", fileName, mime, Convert.ToBase64String(content));
+    }
 }