docs(xmldoc): fill missing XML docs + strip tracking-ID comments across src

Adds <summary>/<param>/<returns>/<inheritdoc> where missing and removes
project bookkeeping IDs (task/tracking refs) from shipped code comments,
so the docs read cleanly and CommentChecker is quiet except for known
false positives (PLC/protocol terms, event/IEqualityComparer inheritdoc).
Doc/comment-only; no logic changed; solution builds clean.

src/Server/ZB.MOM.WW.OtOpcUa.Runtime/Health/DbHealthProbeActor.cs

@@ -8,7 +8,7 @@ namespace ZB.MOM.WW.OtOpcUa.Runtime.Health;
 /// <summary>
 /// Single-flight cached health probe against the ConfigDb. Reads cached state via
 /// <c>Ask&lt;DbHealthStatus&gt;</c>; a single SELECT 1 runs at most every <c>RefreshInterval</c>.
-/// Consumed by both the host's <c>/health/ready</c> endpoint (Task 54) and
+/// Consumed by both the host's <c>/health/ready</c> endpoint and
 /// <c>RedundancyStateActor</c>'s stale calc.
 /// </summary>
 public sealed class DbHealthProbeActor : ReceiveActor, IWithTimers
@@ -28,6 +28,7 @@ public sealed class DbHealthProbeActor : ReceiveActor, IWithTimers
 
     /// <summary>Creates a Props instance for the DbHealthProbeActor.</summary>
     /// <param name="dbFactory">The factory for creating ConfigDb contexts.</param>
+    /// <returns>The Akka <see cref="Akka.Actor.Props"/> for creating this actor.</returns>
     public static Props Props(IDbContextFactory<OtOpcUaConfigDbContext> dbFactory) =>
         Akka.Actor.Props.Create(() => new DbHealthProbeActor(dbFactory));