feat: implement dynamic knowledge graph updates and state management services

src/NexusReader.UI.Shared/Layout/MainLayout.razor

@@ -5,6 +5,8 @@
 @using NexusReader.UI.Shared.Components.Organisms
 @inject IPlatformService PlatformService
 @inject IFocusModeService FocusMode
+@inject IQuizStateService QuizService
+@implements IDisposable
 
 <div class="app-container @_platformClass @(FocusMode.IsFocusModeActive ? "focus-mode-active" : "")">
     <div class="reader-pane">
@@ -18,7 +20,7 @@
         <IntelligenceToolbar />
         <div class="intelligence-content">
             <div class="intelligence-header">
-                <NexusIcon Name="robot" Size="20" Class="neon-glow" />
+                <NexusIcon Name="robot" Size="20" Class="@($"neon-glow {(QuizService.HasNewQuiz ? "quiz-available" : "")}")" />
                 <span>Asystent AI i Interaktywna Mapa</span>
                 <button class="close-btn">×</button>
             </div>
@@ -43,6 +45,7 @@
     protected override void OnInitialized()
     {
         FocusMode.OnFocusModeChanged += StateHasChanged;
+        QuizService.OnQuizUpdated += StateHasChanged;
         
         var context = PlatformService.GetDeviceContext();
         if (context.IsSuccess)
@@ -58,6 +61,7 @@
     public void Dispose()
     {
         FocusMode.OnFocusModeChanged -= StateHasChanged;
+        QuizService.OnQuizUpdated -= StateHasChanged;
     }
 }