Added an analyzer which keeps line breaks LF on every system (#1193)

app/Tests/Tools/ToolCalling/SearchMailsToolTests.cs

@@ -139,7 +139,7 @@ public sealed class SearchMailsToolTests : ToolRegistryTestBase
 
         using (Assert.EnterMultipleScope())
         {
-            Assert.That(function.DescriptionForLLM, Does.Contain($"- id={WORK.Id}, name='Work'{Environment.NewLine}"));
+            Assert.That(function.DescriptionForLLM, Does.Contain($"- id={WORK.Id}, name='Work'\n"));
             Assert.That(function.DescriptionForLLM, Does.EndWith($"- id={PRIVATE.Id}, name='Private'"));
             Assert.That(function.DescriptionForLLM, Does.Not.Contain("per page").And.Not.Contain("last page"), "How many mails a page holds depends on how long they are, so each result tells whether a further page holds more.");
             Assert.That(properties[MailToolArguments.MAILBOX_IDS_ARGUMENT]!["items"]!["enum"]!.AsArray().Select(id => id!.GetValue<string>()), Is.EqualTo(new[] { WORK.Id, PRIVATE.Id }));

app/Tests/Tools/ToolCalling/SemanticSearchToolPagingTests.cs

@@ -132,7 +132,7 @@ public sealed partial class SemanticSearchToolPagingTests
     {
         var result = await this.SearchAsync([HANDBOOK], 2, Found(Passages(1, 10, LONG)));
 
-        Assert.That(result.TextContent, Does.StartWith($"# Retrieval context 4{Environment.NewLine}"), "The model reads the fourth passage of the search, not the first one a second time.");
+        Assert.That(result.TextContent, Does.StartWith("# Retrieval context 4\n"), "The model reads the fourth passage of the search, not the first one a second time.");
     }
 
     [Test]
@@ -230,7 +230,7 @@ public sealed partial class SemanticSearchToolPagingTests
             Assert.That(shown.Text, Is.EqualTo(passage.MatchedText), "The matched text is what the search found, so it is the last to be shortened.");
             Assert.That(shown.SurroundingContent[0], Is.EqualTo(passage.SurroundingContent[0]));
             Assert.That(shown.SurroundingContent[^1], Does.StartWith("After ").And.Length.LessThan(LENGTH), "The surrounding content is shortened from its end.");
-            Assert.That(result.TextContent, Does.Contain($"Matched text content:{Environment.NewLine}").And.Contain("Surrounding text content, shortened to fit the size limit:"));
+            Assert.That(result.TextContent, Does.Contain("Matched text content:\n").And.Contain("Surrounding text content, shortened to fit the size limit:"));
             Assert.That(result.TextContent.Length, Is.LessThanOrEqualTo(SemanticSearchTool.MAX_RESULT_CHARACTERS));
         }
     }

app/Tests/Tools/ToolCalling/SemanticSearchToolRequestTests.cs

@@ -64,7 +64,7 @@ public sealed class SemanticSearchToolRequestTests
     [Test]
     public void AQueryOfSeveralLinesIsRefused()
     {
-        var message = Refusal(() => SemanticSearchTool.ReadRequest(Query($"travel expenses{Environment.NewLine}hotels"), OFFERED));
+        var message = Refusal(() => SemanticSearchTool.ReadRequest(Query("travel expenses\nhotels"), OFFERED));
         Assert.That(message, Does.Contain("'query'").And.Contain("single line"));
     }