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/Core/ZB.MOM.WW.OtOpcUa.Core.Abstractions/IAlarmSource.cs

@@ -11,14 +11,20 @@ public interface IAlarmSource
     ///     Subscribe to alarm events for a node-set (typically: a folder or equipment subtree).
     ///     The driver fires <see cref="OnAlarmEvent"/> for every alarm transition.
     /// </summary>
+    /// <param name="sourceNodeIds">The driver node IDs to subscribe to.</param>
+    /// <param name="cancellationToken">Cancellation token for the operation.</param>
     Task<IAlarmSubscriptionHandle> SubscribeAlarmsAsync(
         IReadOnlyList<string> sourceNodeIds,
         CancellationToken cancellationToken);
 
     /// <summary>Cancel an alarm subscription returned by <see cref="SubscribeAlarmsAsync"/>.</summary>
+    /// <param name="handle">The subscription handle returned from <see cref="SubscribeAlarmsAsync"/>.</param>
+    /// <param name="cancellationToken">Cancellation token for the operation.</param>
     Task UnsubscribeAlarmsAsync(IAlarmSubscriptionHandle handle, CancellationToken cancellationToken);
 
     /// <summary>Acknowledge one or more active alarms by source node ID + condition ID.</summary>
+    /// <param name="acknowledgements">The batch of alarm acknowledgement requests.</param>
+    /// <param name="cancellationToken">Cancellation token for the operation.</param>
     Task AcknowledgeAsync(
         IReadOnlyList<AlarmAcknowledgeRequest> acknowledgements,
         CancellationToken cancellationToken);