Added transcription of audio and video files to local data sources (#1081)

Co-authored-by: Paul Koudelka <106623909+PaulKoudelka@users.noreply.github.com>

app/MindWork AI Studio/Tools/Services/Indexing/FileSourceIndexer.Watchers.cs

@@ -2,6 +2,7 @@ using System.Collections.Concurrent;
 
 using AIStudio.Settings;
 using AIStudio.Settings.DataModel;
+using AIStudio.Tools.Media;
 
 namespace AIStudio.Tools.Services.Indexing;
 
@@ -268,6 +269,14 @@ internal sealed partial class FileSourceIndexer
         if (Directory.Exists(path))
             return true;
 
+        //
+        // The Batch Processing assistant writes the transcript of a media file next to it. When
+        // the data source selects the media file itself, the transcript is no document of its
+        // own, so writing it must not start a run either:
+        //
+        if (MediaSidecarTranscripts.IsCoveredArtifact(path, selection))
+            return false;
+
         if (selection.Selects(path))
             return true;