Show block and page progress while indexing a file

app/MindWork AI Studio/Tools/Services/DataSourceEmbeddingStatus.cs

@@ -3,6 +3,11 @@ using AIStudio.Tools.PluginSystem;
 
 namespace AIStudio.Tools.Services;
 
+/// <remarks>
+/// CurrentFileBlock and CurrentFilePage are null rather than zero while nothing is known about
+/// them: a file which is only about to start has no first block, and not every kind of document
+/// has pages to count. Block numbers start at one, the way the page states them.
+/// </remarks>
 public sealed record DataSourceEmbeddingStatus(
     string DataSourceId,
     string DataSourceName,
@@ -14,7 +19,9 @@ public sealed record DataSourceEmbeddingStatus(
     string CurrentFile,
     string LastError,
     IReadOnlyList<DataSourceEmbeddingFailure> Failures,
-    int PermanentlySkippedFiles = 0)
+    int PermanentlySkippedFiles = 0,
+    int? CurrentFileBlock = null,
+    int? CurrentFilePage = null)
 {
     private static string TB(string fallbackEN) => I18N.I.T(fallbackEN, typeof(DataSourceEmbeddingStatus).Namespace, nameof(DataSourceEmbeddingStatus));