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.Cluster/ServiceCollectionExtensions.cs

@@ -16,6 +16,8 @@ public static class ServiceCollectionExtensions
     /// configurator via <see cref="WithOtOpcUaClusterBootstrap"/> — keeping the entire Akka graph
     /// under Akka.Hosting's management so cluster singletons land on the same ActorSystem.
     /// </summary>
+    /// <param name="services">The service collection to configure.</param>
+    /// <param name="configuration">The application configuration containing cluster options.</param>
     public static IServiceCollection AddOtOpcUaCluster(this IServiceCollection services, IConfiguration configuration)
     {
         services.AddOptions<AkkaClusterOptions>()
@@ -41,6 +43,8 @@ public static class ServiceCollectionExtensions
     /// });
     /// </code>
     /// </summary>
+    /// <param name="builder">The Akka configuration builder to configure.</param>
+    /// <param name="serviceProvider">The service provider for resolving cluster options.</param>
     public static AkkaConfigurationBuilder WithOtOpcUaClusterBootstrap(
         this AkkaConfigurationBuilder builder,
         IServiceProvider serviceProvider)