docs: backfill XML documentation across 756 files

Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.

src/Client/ZB.MOM.WW.OtOpcUa.Client.UI/ViewModels/AlarmsViewModel.cs

@@ -44,6 +44,9 @@ public partial class AlarmsViewModel : ObservableObject
 
     [ObservableProperty] private int _activeAlarmCount;
 
+    /// <summary>Initializes a new instance of the AlarmsViewModel class.</summary>
+    /// <param name="service">The OPC UA client service.</param>
+    /// <param name="dispatcher">The UI dispatcher for thread-safe operations.</param>
     public AlarmsViewModel(IOpcUaClientService service, IUiDispatcher dispatcher)
     {
         _service = service;
@@ -168,6 +171,9 @@ public partial class AlarmsViewModel : ObservableObject
     /// <summary>
     ///     Acknowledges an alarm and returns (success, message).
     /// </summary>
+    /// <param name="alarm">The alarm event to acknowledge.</param>
+    /// <param name="comment">Optional comment for the acknowledgment.</param>
+    /// <returns>A tuple with success flag and message.</returns>
     public async Task<(bool Success, string Message)> AcknowledgeAlarmAsync(AlarmEventViewModel alarm, string comment)
     {
         if (!IsConnected || alarm.EventId == null || alarm.ConditionNodeId == null)
@@ -197,6 +203,8 @@ public partial class AlarmsViewModel : ObservableObject
     /// <summary>
     ///     Restores an alarm subscription and requests a condition refresh.
     /// </summary>
+    /// <param name="sourceNodeId">The source node ID to restore the subscription for.</param>
+    /// <returns>A task that completes when the restore operation finishes.</returns>
     public async Task RestoreAlarmSubscriptionAsync(string? sourceNodeId)
     {
         if (!IsConnected || string.IsNullOrWhiteSpace(sourceNodeId)) return;