Improved the dialogs for local data sources and the Batch Processing assistant (#1096)

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

app/Tests/Tools/EmbeddingSignatureTests.cs

@@ -40,6 +40,18 @@ public sealed class EmbeddingSignatureTests
             "Patterns change which files belong to the source, not how retained files are embedded; the indexing run removes and adds only the affected files.");
     }
 
+    [Test]
+    public void ChangingDirectoryExclusionsKeepsTheStoredEmbeddingsOfRetainedFiles()
+    {
+        var allFiles = DataSource(ConfidenceLevel.LOW);
+        var filteredFiles = allFiles with { ExcludePatterns = "*.mp3;draft-*" };
+
+        Assert.That(
+            Signature(filteredFiles),
+            Is.EqualTo(Signature(allFiles)),
+            "Exclusions change which files belong to the source, not how retained files are embedded.");
+    }
+
     [Test]
     public void ChangingDirectoryRecursionKeepsTheStoredEmbeddingsOfRetainedFiles()
     {
@@ -244,4 +256,4 @@ public sealed class EmbeddingSignatureTests
 
         public int ChunkOverlapTokenLength { get; init; }
     }
-}
+}