Improve XML documentation coverage across src modules and sync generated analysis artifacts.

src/NATS.Server/Monitoring/RoutezHandler.cs

@@ -4,11 +4,18 @@ public sealed class RoutezHandler
 {
     private readonly NatsServer _server;
 
+    /// <summary>
+    /// Creates route monitoring handler.
+    /// </summary>
+    /// <param name="server">Server instance providing route metrics.</param>
     public RoutezHandler(NatsServer server)
     {
         _server = server;
     }
 
+    /// <summary>
+    /// Builds route metrics payload for <c>/routez</c>.
+    /// </summary>
     public object Build()
     {
         var routes = _server.Stats.Routes;