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/Server/ZB.MOM.WW.OtOpcUa.ControlPlane/Fleet/FleetStatusBroadcaster.cs

@@ -28,6 +28,7 @@ public sealed class FleetStatusBroadcaster : ReceiveActor, IWithTimers
     private readonly ILoggingAdapter _log = Context.GetLogger();
     private readonly Dictionary<NodeId, NodeRecord> _nodes = new();
 
+    /// <summary>Gets or sets the timer scheduler for this actor.</summary>
     public ITimerScheduler Timers { get; set; } = null!;
 
     /// <summary>
@@ -36,9 +37,14 @@ public sealed class FleetStatusBroadcaster : ReceiveActor, IWithTimers
     /// </summary>
     public sealed record DriverHostStatusHeartbeat(NodeId NodeId, RevisionHash? CurrentRevision);
 
+    /// <summary>Creates actor props for the fleet status broadcaster.</summary>
+    /// <param name="broadcast">Optional custom broadcast delegate; defaults to distributed pub-sub mediator.</param>
+    /// <returns>Props configured to create a FleetStatusBroadcaster.</returns>
     public static Props Props(Action<object>? broadcast = null) =>
         Akka.Actor.Props.Create(() => new FleetStatusBroadcaster(broadcast));
 
+    /// <summary>Initializes a new instance of the FleetStatusBroadcaster actor.</summary>
+    /// <param name="broadcast">Optional custom broadcast delegate; if null, uses distributed pub-sub mediator.</param>
     public FleetStatusBroadcaster(Action<object>? broadcast = null)
     {
         _cluster = Akka.Cluster.Cluster.Get(Context.System);
@@ -55,6 +61,7 @@ public sealed class FleetStatusBroadcaster : ReceiveActor, IWithTimers
         Receive<Tick>(_ => OnTick());
     }
 
+    /// <inheritdoc />
     protected override void PreStart()
     {
         _cluster.Subscribe(
@@ -67,6 +74,7 @@ public sealed class FleetStatusBroadcaster : ReceiveActor, IWithTimers
         Timers.StartPeriodicTimer("tick", Tick.Instance, BroadcastInterval);
     }
 
+    /// <inheritdoc />
     protected override void PostStop() => _cluster.Unsubscribe(Self);
 
     private void OnMemberUp(Member m)