fixed square brackets bug

Management.Test/Markdown/Quiz/MultipleAnswersTests.cs

@@ -94,4 +94,32 @@ Which events are triggered when the user clicks on an input field?
     question.Answers.First().Text.Should().Be("`int[] theThing()`");
     question.Answers.Count().Should().Be(2);
   }
+  
+  [Test]
+  public void CanUseBracesInAnswerFormultipleAnswer_MultiLine()
+  {
+    var rawMarkdownQuestion = @"
+Which events are triggered when the user clicks on an input field?
+[*]
+```
+int[] myNumbers = new int[] { };
+DoSomething(ref myNumbers);
+static void DoSomething(ref int[] numbers)
+{
+  // do something
+}
+```
+";
+
+    var question = LocalQuizQuestion.ParseMarkdown(rawMarkdownQuestion, 0);
+    question.Answers.First().Text.Should().Be(@"```
+int[] myNumbers = new int[] { };
+DoSomething(ref myNumbers);
+static void DoSomething(ref int[] numbers)
+{
+  // do something
+}
+```");
+    question.Answers.Count().Should().Be(1);
+  }
 }

Management/Actors/Messages/ITraceableMessage.cs

@@ -2,7 +2,7 @@ using System.Diagnostics;
 
 public interface ITraceableMessage
 {
-  public ActivitySpanId? ParentSpan {get;}
+  public ActivitySpanId? ParentSpan { get; }
-  public ActivityTraceId? ParentTrace {get;}
+  public ActivityTraceId? ParentTrace { get; }
 }
 

Management/Models/Local/Quiz/LocalQuizQuestion.cs

@@ -153,7 +153,7 @@ public record LocalQuizQuestion
 
     var answerLinesRaw = linesWithoutPoints[indexOfAnswerStart..];
 
-    var answerStartPattern = @"^(\*?[a-z]?\))|\[\s*\]|\[\*\]|\^";
+    var answerStartPattern = @"^(\*?[a-z]?\))|(?<!\S)\[\s*\]|\[\*\]|\^";
     var answerLines = answerLinesRaw.Aggregate(new List<string>(), (acc, line) =>
     {
       var isNewAnswer = Regex.IsMatch(line, answerStartPattern);