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.Security/Blazor/CookieAuthenticationStateProvider.cs

@@ -20,6 +20,10 @@ public sealed class CookieAuthenticationStateProvider : AuthenticationStateProvi
     private ClaimsPrincipal _current;
     private Task? _pingLoop;
 
+    /// <summary>Initializes a new instance of the CookieAuthenticationStateProvider class.</summary>
+    /// <param name="initial">The initial claims principal from circuit boot.</param>
+    /// <param name="http">The HTTP client for authentication ping requests.</param>
+    /// <param name="logger">The logger for diagnostic messages.</param>
     public CookieAuthenticationStateProvider(
         ClaimsPrincipal initial,
         HttpClient http,
@@ -30,6 +34,7 @@ public sealed class CookieAuthenticationStateProvider : AuthenticationStateProvi
         _logger = logger;
     }
 
+    /// <inheritdoc />
     public override Task<AuthenticationState> GetAuthenticationStateAsync()
     {
         _pingLoop ??= Task.Run(() => PingLoopAsync(_cts.Token));
@@ -60,6 +65,7 @@ public sealed class CookieAuthenticationStateProvider : AuthenticationStateProvi
         }
     }
 
+    /// <inheritdoc />
     public async ValueTask DisposeAsync()
     {
         _cts.Cancel();