fix: Add missing XML doc comments and replace obsolete WebClient with HttpClient

Add XML summary comments to all public members of RegisterDbaMaintenanceTaskCommand.
Replace obsolete System.Net.WebClient with System.Net.Http.HttpClient in ConfigurationHelpers.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: potatoqualitee

project/dbatools/Commands/RunspaceCmdlets.cs

@@ -201,24 +201,43 @@ protected override void ProcessRecord()
     [Cmdlet("Register", "DbaMaintenanceTask", DefaultParameterSetName = "Repeating")]
     public class RegisterDbaMaintenanceTaskCommand : DbaBaseCmdlet
     {
+        /// <summary>
+        /// Name of the maintenance task to register.
+        /// </summary>
         [Parameter(Mandatory = true)]
         public string Name { get; set; }
 
+        /// <summary>
+        /// The scriptblock to execute as the maintenance task.
+        /// </summary>
         [Parameter(Mandatory = true)]
         public ScriptBlock ScriptBlock { get; set; }
 
+        /// <summary>
+        /// Whether to execute the task only once.
+        /// </summary>
         [Parameter(ParameterSetName = "Once", Mandatory = true)]
         public SwitchParameter Once { get; set; }
 
+        /// <summary>
+        /// Interval between repeated executions of the task.
+        /// </summary>
         [Parameter(ParameterSetName = "Repeating", Mandatory = true)]
         public TimeSpan Interval { get; set; }
 
+        /// <summary>
+        /// Initial delay before first execution.
+        /// </summary>
         [Parameter()]
         public TimeSpan Delay { get; set; }
 
+        /// <summary>
+        /// Priority of the maintenance task.
+        /// </summary>
         [Parameter()]
         public MaintenancePriority Priority { get; set; } = MaintenancePriority.Medium;
 
+        /// <inheritdoc />
         protected override void ProcessRecord()
         {
             string normalizedName = Name.ToLowerInvariant();

project/dbatools/Internal/ConfigurationHelpers.cs

@@ -4,7 +4,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Management.Automation;
-using System.Net;
+using System.Net.Http;
 using System.Text;
 
 namespace Dataplat.Dbatools.Internal
@@ -56,10 +56,9 @@ public static List<Hashtable> ReadConfigFromUrl(PSCmdlet cmdlet, string url)
             if (String.IsNullOrEmpty(url))
                 return new List<Hashtable>();
 
-            using (WebClient client = new WebClient())
+            using (HttpClient client = new HttpClient())
             {
-                client.Encoding = Encoding.UTF8;
-                string jsonContent = client.DownloadString(url);
+                string jsonContent = client.GetStringAsync(url).GetAwaiter().GetResult();
                 return ParseConfigJson(cmdlet, jsonContent);
             }
         }