Added sharing a BeyondFacts Lab session with the research team (#1196)

app/MindWork AI Studio/Assistants/BeyondFactsLab/BflAnonymization.cs

@@ -0,0 +1,30 @@
+namespace AIStudio.Assistants.BeyondFactsLab;
+
+/// <summary>
+/// A text after the anonymizer of the BeyondFacts Lab ran over it, with what it replaced.
+/// </summary>
+/// <param name="Text">The anonymized text.</param>
+/// <param name="Replacements">What the anonymizer replaced, in the order it first found each.</param>
+public sealed record BflAnonymization(string Text, IReadOnlyList<BflReplacement> Replacements)
+{
+    /// <summary>
+    /// Gets the result of a later run over the text, e.g., after the person edited it, together with what this run
+    /// replaced already.
+    /// </summary>
+    /// <param name="later">The later run.</param>
+    /// <returns>The text of the later run and the replacements of both runs, counted together.</returns>
+    public BflAnonymization CombinedWith(BflAnonymization later)
+    {
+        var combined = this.Replacements.ToList();
+        foreach (var replacement in later.Replacements)
+        {
+            var index = combined.FindIndex(candidate => candidate.Placeholder == replacement.Placeholder && candidate.Original == replacement.Original);
+            if (index < 0)
+                combined.Add(replacement);
+            else
+                combined[index] = combined[index] with { Count = combined[index].Count + replacement.Count };
+        }
+
+        return new BflAnonymization(later.Text, combined);
+    }
+}