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.AdminUI/Hubs/HubRouteBuilderExtensions.cs

@@ -3,8 +3,13 @@ using Microsoft.AspNetCore.Routing;
 
 namespace ZB.MOM.WW.OtOpcUa.AdminUI.Hubs;
 
+/// <summary>Extension methods for mapping OtOpcUa SignalR hubs to routes.</summary>
 public static class HubRouteBuilderExtensions
 {
+    /// <summary>
+    ///     Maps all OtOpcUa Admin UI SignalR hubs to their configured endpoints.
+    /// </summary>
+    /// <param name="app">The endpoint route builder to register hubs on.</param>
     public static IEndpointRouteBuilder MapOtOpcUaHubs(this IEndpointRouteBuilder app)
     {
         app.MapHub<FleetStatusHub>(FleetStatusHub.Endpoint);