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/Core/ZB.MOM.WW.OtOpcUa.Cluster/ClusterRoleInfo.cs

@@ -43,20 +43,16 @@ public sealed class ClusterRoleInfo : IClusterRoleInfo, IDisposable
         _subscriber = system.ActorOf(Props.Create(() => new SubscriberActor(this)), "clusterroleinfo-subscriber");
     }
 
-    /// <summary>Gets the local cluster node identifier.</summary>
+    /// <inheritdoc />
     public CommonsNodeId LocalNode => _localNode;
 
-    /// <summary>Gets the set of roles assigned to the local node.</summary>
+    /// <inheritdoc />
     public IReadOnlySet<string> LocalRoles => _localRoles;
 
-    /// <summary>Checks if the local node has a specific role.</summary>
-    /// <param name="role">The role name to check.</param>
-    /// <returns>True if the local node has the specified role; otherwise false.</returns>
+    /// <inheritdoc />
     public bool HasRole(string role) => _localRoles.Contains(role);
 
-    /// <summary>Gets all cluster members that have a specific role.</summary>
-    /// <param name="role">The role name.</param>
-    /// <returns>A read-only list of node IDs with the specified role.</returns>
+    /// <inheritdoc />
     public IReadOnlyList<CommonsNodeId> MembersWithRole(string role)
     {
         lock (_lock)
@@ -68,9 +64,7 @@ public sealed class ClusterRoleInfo : IClusterRoleInfo, IDisposable
         }
     }
 
-    /// <summary>Gets the current leader node for a specific role.</summary>
-    /// <param name="role">The role name.</param>
-    /// <returns>The node ID of the current role leader, or null if no leader is elected.</returns>
+    /// <inheritdoc />
     public CommonsNodeId? RoleLeader(string role)
     {
         lock (_lock)

src/Core/ZB.MOM.WW.OtOpcUa.Cluster/RoleParser.cs

@@ -9,6 +9,7 @@ public static class RoleParser
 
     /// <summary>Parses a comma-separated string of role names into a validated array.</summary>
     /// <param name="raw">The raw role string to parse.</param>
+    /// <returns>The distinct, lower-cased, validated role names.</returns>
     public static string[] Parse(string? raw)
     {
         if (string.IsNullOrWhiteSpace(raw)) return Array.Empty<string>();

src/Core/ZB.MOM.WW.OtOpcUa.Cluster/ServiceCollectionExtensions.cs

@@ -20,6 +20,7 @@ public static class ServiceCollectionExtensions
     /// </summary>
     /// <param name="services">The service collection to configure.</param>
     /// <param name="configuration">The application configuration containing cluster options.</param>
+    /// <returns>The same service collection, for chaining.</returns>
     public static IServiceCollection AddOtOpcUaCluster(this IServiceCollection services, IConfiguration configuration)
     {
         services.AddOptions<AkkaClusterOptions>()
@@ -47,6 +48,7 @@ public static class ServiceCollectionExtensions
     /// </summary>
     /// <param name="builder">The Akka configuration builder to configure.</param>
     /// <param name="serviceProvider">The service provider for resolving cluster options.</param>
+    /// <returns>The same builder, for chaining.</returns>
     public static AkkaConfigurationBuilder WithOtOpcUaClusterBootstrap(
         this AkkaConfigurationBuilder builder,
         IServiceProvider serviceProvider)