fix(postmerge): guard DeepDrftMenu SSR hang, add Manager root redirect, add Manager styles link

DeepDrftManager/Components/App.razor

@@ -8,6 +8,7 @@
     <base href="/" />
     <DeepDrftFontLinks />
     <link href=@Assets["_content/MudBlazor/MudBlazor.min.css"] rel="stylesheet" />
+    <link rel="stylesheet" href="@Assets["DeepDrftManager.styles.css"]" />
     <link rel="stylesheet" href="@Assets["_content/DeepDrftShared.Client/styles/deepdrft-tokens.css"]" />
     <ImportMap />
     <link rel="icon" type="image/ico" href="deepdrft-logo.ico" />

DeepDrftManager/Components/Pages/Index.razor

@@ -0,0 +1,12 @@
+@page "/"
+@rendermode InteractiveServer
+@using AuthBlocksWeb.HierarchicalAuthorize
+@attribute [HierarchicalRoleAuthorize("Admin")]
+@inject NavigationManager NavigationManager
+
+@code {
+    protected override void OnInitialized()
+    {
+        NavigationManager.NavigateTo("/cms", replace: true);
+    }
+}

DeepDrftPublic.Client/Layout/DeepDrftMenu.razor

@@ -79,6 +79,13 @@
 
     protected override async Task OnInitializedAsync()
     {
+        // During SSR prerender the dark-mode state is already seeded by the server-side
+        // DarkModeService (via IHttpContextAccessor + DarkModeSettings + PersistentComponentState).
+        // Invoking the EventCallback here during prerender triggers a re-render cycle on the
+        // SSR renderer that never completes, hanging the page. Guard to interactive-only so
+        // the cookie sync only runs when the component is actually mounted in the browser.
+        if (!RendererInfo.IsInteractive) return;
+
         IsDarkMode = DarkModeCookieService.GetDarkModeAsync();
         await IsDarkModeChanged.InvokeAsync(IsDarkMode);
     }