Add XML docs

YesNt.Interpreter/Runtime/DebugEventArgs.cs

@@ -2,11 +2,32 @@
 
 namespace YesNt.Interpreter.Runtime;
 
+/// <summary>
+/// Provides per-line execution data raised through <see cref="YesNtInterpreter.OnLineExecuted"/>.
+/// </summary>
 public class DebugEventArgs : EventArgs
 {
+    /// <summary>Gets the 1-based line number of the executed line within its source file.</summary>
     public int LineNumber { get; internal set; }
+
+    /// <summary>
+    /// Gets the line content after all statement transformations have been applied
+    /// (e.g. after variable substitution). May differ from <see cref="OriginalLine"/>.
+    /// </summary>
     public string CurrentLine { get; internal set; }
+
+    /// <summary>Gets the raw line content as it appeared in the source file.</summary>
     public string OriginalLine { get; internal set; }
+
+    /// <summary>
+    /// Gets the task identifier of the task that executed this line, or <c>0</c> if the line
+    /// was executed on the main thread.
+    /// </summary>
     public int TaskId { get; internal set; }
+
+    /// <summary>
+    /// Gets a value indicating whether this line was executed inside a background task
+    /// (spawned with the <c>task</c> statement).
+    /// </summary>
     public bool IsTask { get; internal set; }
 }