Added a way to read what the AI received from your sources (#1100)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Chat/ContentBlock.cs

@@ -38,4 +38,24 @@ public class ContentBlock
         Role = this.Role,
         HideFromUser = changeHideState ? hideFromUser : this.HideFromUser,
     };
+
+    /// <summary>
+    /// Clones this block for a place apart from its chat, e.g., the example conversation of a chat template.
+    /// </summary>
+    /// <remarks>
+    /// Without anything which refers to the provenance store: its entries belong to the chat and are
+    /// deleted with it. The passages of an answer stay behind, and every chat which receives an
+    /// attached document reads it anew from its file, cf. FileAttachment.ProvenanceId.
+    /// </remarks>
+    public ContentBlock CloneApartFromChat(bool changeHideState = false, bool hideFromUser = true)
+    {
+        var clone = this.DeepClone(changeHideState, hideFromUser);
+        if (clone.Content is ContentText text)
+            text.SourcePassages = [];
+
+        if (clone.Content is not null)
+            clone.Content.FileAttachments = clone.Content.FileAttachments.Select(attachment => attachment.WithoutStoredText()).ToList();
+
+        return clone;
+    }
 }