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.Runtime/Health/DbHealthProbeActor.cs

@@ -23,11 +23,16 @@ public sealed class DbHealthProbeActor : ReceiveActor, IWithTimers
     private readonly ILoggingAdapter _log = Context.GetLogger();
     private DbHealthStatus _last = new(false, DateTime.MinValue, "not probed yet");
 
+    /// <summary>Gets or sets the timer scheduler for periodic health probes.</summary>
     public ITimerScheduler Timers { get; set; } = null!;
 
+    /// <summary>Creates a Props instance for the DbHealthProbeActor.</summary>
+    /// <param name="dbFactory">The factory for creating ConfigDb contexts.</param>
     public static Props Props(IDbContextFactory<OtOpcUaConfigDbContext> dbFactory) =>
         Akka.Actor.Props.Create(() => new DbHealthProbeActor(dbFactory));
 
+    /// <summary>Initializes a new instance of the <see cref="DbHealthProbeActor"/> class.</summary>
+    /// <param name="dbFactory">The factory for creating ConfigDb contexts.</param>
     public DbHealthProbeActor(IDbContextFactory<OtOpcUaConfigDbContext> dbFactory)
     {
         _dbFactory = dbFactory;
@@ -35,6 +40,7 @@ public sealed class DbHealthProbeActor : ReceiveActor, IWithTimers
         Receive<Tick>(_ => RunProbe());
     }
 
+    /// <inheritdoc />
     protected override void PreStart()
     {
         RunProbe();