refactor: consolidate project structure by migrating authentication, identity, and shared UI components while removing legacy Web Client files.

.agents/agents.md

@@ -4,7 +4,7 @@
 - **Role:** Lead Architect & Creative Technologist (.NET 10 & Blazor)
 - **Persona:** Professional, precise, Senior Full-Stack Engineer focused on performance and "invisible UI".
 - **Architecture Role:** Lead Clean Architecture Specialist.
-- **Skills:** [nexus-clean-architecture, nexus-ui-engine, nexus-graph-d3, blazor-state-performance, blazor-hybrid-bridge, semantic-kernel-orchestrator]
+- **Skills:** [nexus-clean-architecture, nexus-ui-engine, nexus-graph-d3, blazor-state-performance, blazor-hybrid-bridge, semantic-kernel-orchestrator, nexus-identity-saas]
 - **Technical Constraints:**
     - **Directory Structure:** Strict separation: `/src` (app code) and `/tests` (testing code) at solution root level.
     - **Patterns:** Mandatory CQRS via `MediatR` (LuckyPennySoftware implementation). No business logic in UI components.

.agents/skills/nexus-identity-saas.md

@@ -0,0 +1,39 @@
+---
+name: nexus-identity-saas
+description: Standards for Identity, Authentication, and SaaS feature implementations
+---
+# Identity & SaaS Integration
+
+- **Core Identity Model:**
+  - Extend `IdentityUser` to create a custom `NexusUser` model containing SaaS-specific properties (e.g., `AITokenLimit`, `AITokensUsed`, `TenantId`, `CurrentPlan`).
+  - Place core domain models in the core project layer (e.g., `NexusArchitect.Core` or `NexusReader.Domain`).
+  - Configure `ApplicationDbContext` to inherit from `IdentityDbContext<NexusUser>` and map custom fields and relationships correctly.
+
+- **Authentication Endpoints & Providers:**
+  - Use native ASP.NET Core Identity API endpoints (`/register`, `/login`, `/refresh`) or scaffolded Razor components in Blazor (`Components/Account/Pages`).
+  - Integrate OAuth2 providers (like Google, Facebook, Microsoft) natively via ASP.NET Core's external login providers.
+  - Utilize `SignInManager<TUser>` and `UserManager<TUser>` for custom login logic and user management.
+
+- **Service Configuration & Policies:**
+  - Register Identity using `builder.Services.AddDefaultIdentity<NexusUser>()` or `AddIdentity<NexusUser, IdentityRole>()` followed by `.AddEntityFrameworkStores<ApplicationDbContext>()`.
+  - Configure `IdentityOptions` in `Program.cs` to enforce strict security standards:
+    - **Password:** `RequireDigit`, `RequireLowercase`, `RequireUppercase`, `RequireNonAlphanumeric`, `RequiredLength` (min 8).
+    - **Lockout:** Set `MaxFailedAccessAttempts` and `DefaultLockoutTimeSpan` to prevent brute-force attacks.
+    - **User:** Enforce `RequireUniqueEmail = true`.
+
+- **Authorization & Policies:**
+  - Implement Roles and Claims-based authorization.
+  - Create robust Policies (e.g., `ProUser`) and use custom `Requirement` handlers for specific business logic like checking if `AITokensUsed < AITokenLimit`.
+
+- **Mobile / Blazor Hybrid Auth State:**
+  - Ensure authentication state persists securely within the MAUI container.
+  - Store JWT tokens and sensitive session data in `SecureStorage`.
+  - Provide a seamless mechanism to restore the `AuthenticationStateProvider` on app launch if the token is valid.
+
+- **SaaS Features & Webhooks:**
+  - Integrate third-party payment/subscription providers (e.g., Stripe) using secure webhooks.
+  - Sync external subscription status with internal user claims and limits (e.g., upgrade `AITokenLimit` upon a webhook success event for a "Pro" plan).
+
+- **Verification:**
+  - Write unit tests for custom authorization handlers and token limit logic.
+  - Ensure the UI handles unauthorized and out-of-tokens states gracefully and points users to subscription management.

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <AndroidSdkDirectory>/home/debian/android-sdk</AndroidSdkDirectory>
+    <AndroidSdkDirectory>$(HOME)/android-sdk</AndroidSdkDirectory>
-    <JavaSdkDirectory>/home/debian/java/jdk-17.0.10+7</JavaSdkDirectory>
+    <JavaSdkDirectory>/usr/lib/jvm/java-21-openjdk-amd64</JavaSdkDirectory>
   </PropertyGroup>
 </Project>

backlog-identity.md

@@ -0,0 +1,45 @@
+# NexusArchitect - User Management Implementation Backlog
+
+**Project:** AI-Powered E-book Reader SaaS  
+**Architecture:** .NET 10, Blazor Hybrid, MAUI, ASP.NET Core Identity  
+**Primary Goal:** Implement a secure, scalable authentication and authorization system with SaaS-specific features (AI token limits, subscription tiers).
+
+---
+
+## Phase 0: Backend Foundations (ASP.NET Core & EF Core)
+
+| ID | Task Title | Description & Acceptance Criteria | Tech Stack |
+|:---|:---|:---|:---|
+| **BACK-1** | Define Extended `NexusUser` Model | **Description:** Create a `NexusUser` class inheriting from `IdentityUser`. Add custom properties for SaaS logic.<br>**AC:**<br>- [ ] Properties added: `AITokenLimit` (int), `AITokensUsed` (int), `TenantId` (Guid), `CurrentPlan` (string).<br>- [ ] Model placed in `NexusArchitect.Core` project. | C# / Identity |
+| **BACK-2** | Configure `ApplicationDbContext` for Identity | **Description:** Set up the DB context to inherit from `IdentityDbContext<NexusUser>`.<br>**AC:**<br>- [ ] Mapped standard Identity tables (Users, Roles, Claims).<br>- [ ] Configured 1-to-Many relationship between `NexusUser` and `Ebooks`. | EF Core |
+| **BACK-3** | Database Schema Migration | **Description:** Generate and apply the initial migration for Identity tables.<br>**AC:**<br>- [ ] SQL schema contains all 7+ standard Identity tables.<br>- [ ] Custom `NexusUser` fields are correctly reflected in the `AspNetUsers` table. | EF Core CLI |
+| **BACK-4** | Implement Identity API Endpoints | **Description:** Enable native .NET Identity API endpoints in `Program.cs`.<br>**AC:**<br>- [ ] Endpoints `/register`, `/login`, and `/refresh` are active.<br>- [ ] Verified functionality via Swagger/OpenAPI. | ASP.NET Core |
+
+---
+
+## Phase 1: Authentication & Authorization (UI & Logic)
+
+| ID | Task Title | Description & Acceptance Criteria | Tech Stack |
+|:---|:---|:---|:---|
+| **BACK-5** | Define Authorization Policies | **Description:** Implement Roles and Claims-based authorization (Free vs. Pro).<br>**AC:**<br>- [ ] Created a `ProUser` policy.<br>- [ ] Implemented a custom `Requirement` to check if `AITokensUsed < AITokenLimit`. | ASP.NET Core |
+| **UI-1** | Implement Login Page (Blazor) | **Description:** Build the Login UI based on the Dark Mode mockup.<br>**AC:**<br>- [ ] Theme: Dark mode with neon green accents.<br>- [ ] Components: Email/Password fields, "Remember Me" toggle, "Login" button.<br>- [ ] Integrates with `AuthenticationStateProvider`. | Blazor / CSS |
+| **UI-2** | Google OAuth2 Integration | **Description:** Configure external login provider (Google) in the backend and UI.<br>**AC:**<br>- [ ] Users can sign in via Google button.<br>- [ ] New users are automatically provisioned in the database upon successful OAuth. | OAuth / Google Cloud |
+| **UI-3** | Implement Registration Flow | **Description:** Create a registration form calling the `/register` endpoint.<br>**AC:**<br>- [ ] Validation: Email format, password complexity (min 8 chars, uppercase, digit).<br>- [ ] Proper error handling for existing users. | Blazor |
+
+---
+
+## Phase 2: User Management & SaaS Scaling (Profile & Mobile)
+
+| ID | Task Title | Description & Acceptance Criteria | Tech Stack |
+|:---|:---|:---|:---|
+| **UI-4** | User Profile & Dashboard | **Description:** Build the User Profile UI focusing on "Active Learning" metrics.<br>**AC:**<br>- [ ] Displays: Token usage bar (Used/Limit), average quiz score, and last read book.<br>- [ ] Links to subscription management. | Blazor |
+| **MAUI-1** | Mobile Auth Integration (Blazor Hybrid) | **Description:** Ensure the authentication state is shared and persists in the MAUI container.<br>**AC:**<br>- [ ] Securely store JWT tokens in `SecureStorage`.<br>- [ ] Automatic login on app launch if token is valid. | MAUI / Blazor Hybrid |
+| **INTEG-1** | Stripe Subscription Webhooks | **Description:** Sync Identity Claims with Stripe subscription status.<br>**AC:**<br>- [ ] Webhook updates `AITokenLimit` when a "Pro" plan is purchased.<br>- [ ] User is downgraded back to "Free" limit upon cancellation. | Stripe SDK / .NET |
+
+---
+
+## Definition of Done (DoD)
+- All code follows the **NexusArchitect** architectural guidelines.
+- Unit tests cover core Identity logic (e.g., token limit validation).
+- UI is responsive and consistent with the provided Dark Mode design.
+- Documentation updated with setup instructions for new developers.

dotnet-tools.json

@@ -0,0 +1,13 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "dotnet-ef": {
+      "version": "10.0.7",
+      "commands": [
+        "dotnet-ef"
+      ],
+      "rollForward": false
+    }
+  }
+}

ejajBook.code-workspace

@@ -4,5 +4,9 @@
 			"path": "."
 		}
 	],
-	"settings": {}
+	"settings": {
+		"dotrush.roslyn.projectOrSolutionFiles": [
+			"NexusReader.slnx"
+		]
+	}
 }

ejajBook/.agents/DOD.md

@@ -1,11 +0,0 @@
-# Definition of Done (DoD)
-
-1. **Architecture Compliance:** Feature follows CQRS flow. Logic is in Handlers. Result is wrapped in `Result<T>` from FluentResult.
-2. **Modularization:** Code is in `/src`, tests in `/tests`. Module-specific logic is isolated.
-3. **UI/UX Integrity:** - "Vertical Flow Check" passed (Assistant is part of the document stream, not an absolute pop-up).
-    - No "Layout Shift" during AI content streaming.
-    - Safe-area-insets respected for iOS/Android notches.
-4. **Code Quality:** C# 14 syntax used (Primary Constructors, etc.). Scoped CSS (.razor.css) implemented.
-5. **D3.js Performance:** JS Modules correctly disposed using `IAsyncDisposable`.
-6. **Persistence:** State survives manual page refresh (Local/Session Storage integration).
-7. **Mapping:** All entity-to-DTO conversions must use Mapster.

ejajBook/.agents/agents.md

@@ -1,15 +0,0 @@
-# Agent Personas
-
-## NexusArchitect
-- **Role:** Lead Architect & Creative Technologist (.NET 10 & Blazor)
-- **Persona:** Professional, precise, Senior Full-Stack Engineer focused on performance and "invisible UI".
-- **Architecture Role:** Lead Clean Architecture Specialist.
-- **Skills:** [nexus-clean-architecture, nexus-ui-engine, nexus-graph-d3, blazor-state-performance, blazor-hybrid-bridge, semantic-kernel-orchestrator]
-- **Technical Constraints:**
-    - **Directory Structure:** Strict separation: `/src` (app code) and `/tests` (testing code) at solution root level.
-    - **Patterns:** Mandatory CQRS via `MediatR` (LuckyPennySoftware implementation). No business logic in UI components.
-    - **Error Handling:** All handlers must return `Result<T>` via `FluentResult`.
-    - **Mapping:** Use `Mapster` exclusively. Zero-tolerance for AutoMapper.
-    - **Platform:** Target .NET 10 with Native AOT compatibility in mind for mobile performance.
-    - **Verification:** Follow "Verification-led development" — the agent must plan the test before writing the feature code.
-    - **UI Framework:** Use Blazor Component Model. NEVER generate raw HTML/CSS; always use isolated Razor Components (.razor + .razor.css).

ejajBook/.agents/skills/blazor-hybrid-bridge.md

@@ -1,9 +0,0 @@
----
-name: blazor-hybrid-bridge
-description: Standards for cross-platform compatibility (Web & MAUI Hybrid)
----
-# Cross-Platform Integration
-
-- **Abstraction:** Implement `IPlatformService` for native features like Haptics or File System.
-- **UI Safety:** Support `env(safe-area-inset-...)` for mobile notches.
-- **Touch Input:** Use `user-select: none` on interactive nodes to prevent accidental selection.

ejajBook/.agents/skills/blazor-state-performance.md

@@ -1,9 +0,0 @@
----
-name: blazor-state-performance
-description: Performance & State Persistence in Blazor .NET 10
----
-# Performance Rules
-
-- **State Management:** Use `PersistentComponentState` to sync data between prerendering and client-side.
-- **Optimization:** Use `@key` directive for list iterations to minimize DOM diffing.
-- **Memory:** Always implement `IAsyncDisposable` in components using JS Interop to prevent memory leaks.

ejajBook/.agents/skills/nexus-clean-architecture.md

@@ -1,17 +0,0 @@
----
-name: nexus-clean-architecture
-description: Clean Architecture & CQRS implementation for .NET 10
----
-# Clean Architecture Standards
-
-- **Folder Hierarchy:** Root must contain `/src` and `/tests`. Group logic by Feature (e.g., `src/Features/Reader/Queries/GetChapterContent`).
-- **CQRS Flow:**
-  - UI triggers `IMediator.Send()`.
-  - Handler executes logic and returns `FluentResult.Result`.
-  - No direct Database/API calls from Razor components.
-- **MediatR:** Use `LuckyPennySoftware.MediatR` for implementation.
-- **Mapster Integration:**
-  - Centralize mapping configurations.
-  - No AutoMapper allowed.
-- **Functional Error Handling:**
-  - Mandatory use of `FluentResult`. No exceptions for business logic flow.

ejajBook/.agents/skills/nexus-graph-d3.md

@@ -1,11 +0,0 @@
----
-name: nexus-graph-d3
-description: D3.js standards for Knowledge Graph
----
-# D3.js Standards
-
-- **Data Exchange:** Use `System.Text.Json` with CamelCase naming.
-- **JS Interop:** Use ES6 modules and `IJSObjectReference`.
-- **Responsiveness:** SVG must use `viewBox` for fluid portrait scaling.
-- **Visuals:** Use CSS variables (`--nexus-neon`) for node styling.
-- **Events:** JS emits events (like `nodeClicked`) caught by Blazor via `DotNetObjectReference`.

ejajBook/.agents/skills/nexus-ui-engine.md

@@ -1,14 +0,0 @@
----
-name: nexus-ui-engine
-description: Design System & Component rules for Blazor
----
-# UI Standards
-
-- **Atomic Components:** Build reusable `Atoms`, `Molecules`, and `Organisms`.
-- **Styling:** Scoped CSS only (`.razor.css`). Global styles reserved for Design Tokens.
-- **Branding (Nexus Neon):**
-  - BG: `#121212` (Dark Mode).
-  - Accent: `#00ff99` (Neon Green).
-  - Typography: Serif for reading, Sans-Serif for AI interface.
-- **Vertical Flow:** AI Assistant must be injected into the document flow, pushing text down smoothly.
-- **A11y:** 44x44px touch targets; contrast ratio 4.5:1.

ejajBook/.agents/skills/semantic-kernel-orchestrator.md

@@ -1,10 +0,0 @@
----
-name: semantic-kernel-orchestrator
-description: Integrating AI logic with .NET Semantic Kernel
----
-# AI Implementation Rules
-
-- **Kernel Setup:** Use Microsoft Semantic Kernel with .NET 10.
-- **Function Calling:** Define C# Plugins for "Graph Update" and "Quiz Generation".
-- **Streaming:** Implement `IAsyncEnumerable<string>` for real-time assistant responses in the UI.
-- **Context:** Ensure chapter metadata is passed as Semantic Memory.

ejajBook/BACKLOG.md

@@ -1,87 +0,0 @@
-# 📑 Project Backlog: Nexus AI E-Reader (Mockup Implementation)
-**Architecture Framework:** .NET 10 | Blazor Component Model | CQRS with MediatR | FluentResult | Mapster
-
----
-
-## 🟢 PHASE 1: Infrastructure & Design Tokens
-*Goal: Prepare the clean architecture foundation and the visual DNA.*
-
-### [TASK-01] Solution & Directory Structure Setup
-- **Action:** Create the folder structure: `/src` for projects, `/tests` for unit/integration tests.
-- **Details:** Initialize `NexusReader.Web` (Blazor), `NexusReader.Application`, `NexusReader.Domain`, and `NexusReader.Infrastructure`.
-- **DoD:** Solution compiles with strict folder separation.
-
-### [TASK-02] Core Library Integration
-- **Action:** Install and configure LuckyPennySoftware.MediatR, Mapster, and FluentResult.
-- **Details:** - Setup `MappingConfig` for Mapster in the Application layer.
-    - Implement a `BaseHandler` that returns `Result<T>`.
-- **DoD:** A sample Query returns a `Success` Result via MediatR.
-
-### [TASK-03] Nexus Neon Design System
-- **Action:** Implement global CSS variables in `app.css` and base Atoms.
-- **Details:** - Variables: `--nexus-neon: #00ff99`, `--nexus-bg: #121212`, `--nexus-card: #1e1e1e`.
-    - Components: `NexusButton.razor`, `NexusTypography.razor` (handling Serif for ebook, Sans for UI).
-- **DoD:** Variables are accessible via all scoped CSS files.
-
----
-
-## 🔵 PHASE 2: Seamless Reader & AI Assistant (Left Side / Inline)
-*Goal: Implement the ebook reading logic and the "Vertical Flow" AI injection.*
-
-### [TASK-04] ReaderCanvas & Dynamic Content Injection
-- **Action:** Create `ReaderCanvas.razor` to render ebook text.
-- **Details:** - Logic to split text into blocks.
-    - Implementation of an "Injection Point" system where `AiAssistantBubble.razor` can be rendered inline between paragraphs.
-- **Mockup Match:** Text must use the high-contrast Serif font from the mockup.
-
-### [TASK-05] AiAssistantBubble Component
-- **Action:** Implement the AI chat bubble with a robot avatar.
-- **Details:** - Scoped CSS for the glowing border and dark glassmorphism background.
-    - Parameters for `DialogueText` and `ActionButtons` ("Pokaż więcej", "Rozwiąż quiz").
-    - Integration with Semantic Kernel for streaming text.
-- **DoD:** Bubble appears smoothly in the text flow without absolute positioning.
-
----
-
-## 🟡 PHASE 3: Knowledge Graph & Brain (Right Side / Flow)
-*Goal: Implement the D3.js graph and the "You are here" logic.*
-
-### [TASK-06] D3.js Knowledge Graph Bridge
-- **Action:** Implement `KnowledgeGraph.razor` with JS Interop.
-- **Details:** - ES6 Module `knowledgeGraph.js` using D3.js v7.
-    - SVG ViewBox scaling for portrait orientation.
-    - Implementation of the "TU JESTEŚ" (You Are Here) pulsing label on the active node.
-- **DoD:** Clicking a node in JS triggers a C# EventCallback via `DotNetObjectReference`.
-
-### [TASK-07] Semantic Mapping Service
-- **Action:** Create the `GetKnowledgeGraphQuery` (CQRS).
-- **Details:** - Service uses Semantic Kernel to extract nodes from the current chapter.
-    - Mapster maps the AI raw response to the `GraphViewModel`.
-- **DoD:** Graph updates dynamically when the reader moves to a new chapter.
-
----
-
-## 🟠 PHASE 4: Verification & Mobile Polish
-*Goal: Implement the quiz module and cross-platform readiness.*
-
-### [TASK-08] KnowledgeCheck (Quiz) Module
-- **Action:** Implement the `SubmitAnswerCommand` using MediatR.
-- **Details:** - UI: `KnowledgeCheck.razor` with radio buttons and a "Wyślij" (Submit) button.
-    - Logic: Handler returns `Result` (Success/Failure) via FluentResult.
-    - Mapster: Map `QuizDto` to `QuizViewModel`.
-- **Mockup Match:** Neon highlight on the selected/correct answer.
-
-### [TASK-09] Persistence & Cross-Platform (Hybrid)
-- **Action:** Implement `IPlatformService` for Android/iOS support.
-- **Details:** - Safe-area-insets implementation for notches.
-    - `BrowserStorage` implementation of `AppState` to save progress.
-    - Haptic feedback abstraction (trigger vibration on correct answer).
-- **DoD:** App maintains graph state after a manual refresh.
-
----
-
-## 🛠️ Instructions for NexusArchitect
-1. **Vertical Flow Priority:** Ensure that the AI assistant and the Graph never overlay text. Use `Flexbox` or `Grid` for a single, continuous scrollable column in portrait mode.
-2. **Result Pattern:** Every single Mediator Handler **must** return `FluentResults.Result`.
-3. **Mapster:** Perform all DTO-to-UI mappings in the Query/Command Handlers, not in the Razor components.
-4. **Isolated Styles:** All specific CSS for the Neon effect must be in `.razor.css` files.

ejajBook/NexusReader.slnx

@@ -1,11 +0,0 @@
-<Solution>
-  <Folder Name="/src/">
-    <Project Path="src/NexusReader.Application/NexusReader.Application.csproj" />
-    <Project Path="src/NexusReader.Domain/NexusReader.Domain.csproj" />
-    <Project Path="src/NexusReader.Infrastructure/NexusReader.Infrastructure.csproj" />
-    <Project Path="src/NexusReader.Web.Client/NexusReader.Web.Client.csproj" />
-  </Folder>
-  <Folder Name="/src/NexusReader.Web.New/">
-    <Project Path="src/NexusReader.Web.New/NexusReader.Web.csproj" />
-  </Folder>
-</Solution>

ejajBook/ejajBook.code-workspace

@@ -1,8 +0,0 @@
-{
-	"folders": [
-		{
-			"path": "."
-		}
-	],
-	"settings": {}
-}

ejajBook/src/NexusReader.Application/Abstractions/Messaging/ICommand.cs

@@ -1,12 +0,0 @@
-using FluentResults;
-using MediatR;
-
-namespace NexusReader.Application.Abstractions.Messaging;
-
-public interface ICommand : IRequest<Result>
-{
-}
-
-public interface ICommand<TResponse> : IRequest<Result<TResponse>>
-{
-}

ejajBook/src/NexusReader.Application/Abstractions/Messaging/ICommandHandler.cs

@@ -1,14 +0,0 @@
-using FluentResults;
-using MediatR;
-
-namespace NexusReader.Application.Abstractions.Messaging;
-
-public interface ICommandHandler<TCommand> : IRequestHandler<TCommand, Result>
-    where TCommand : ICommand
-{
-}
-
-public interface ICommandHandler<TCommand, TResponse> : IRequestHandler<TCommand, Result<TResponse>>
-    where TCommand : ICommand<TResponse>
-{
-}

ejajBook/src/NexusReader.Application/Abstractions/Messaging/IQuery.cs

@@ -1,8 +0,0 @@
-using FluentResults;
-using MediatR;
-
-namespace NexusReader.Application.Abstractions.Messaging;
-
-public interface IQuery<TResponse> : IRequest<Result<TResponse>>
-{
-}

ejajBook/src/NexusReader.Application/Abstractions/Messaging/IQueryHandler.cs

@@ -1,9 +0,0 @@
-using FluentResults;
-using MediatR;
-
-namespace NexusReader.Application.Abstractions.Messaging;
-
-public interface IQueryHandler<TQuery, TResponse> : IRequestHandler<TQuery, Result<TResponse>>
-    where TQuery : IQuery<TResponse>
-{
-}

ejajBook/src/NexusReader.Application/Abstractions/Services/IAiGenerateQuizService.cs

@@ -1,9 +0,0 @@
-using FluentResults;
-using NexusReader.Application.Queries.Quiz;
-
-namespace NexusReader.Application.Abstractions.Services;
-
-public interface IAiGenerateQuizService
-{
-    Task<Result<QuizDto>> GenerateQuizAsync(string contextBlockId, CancellationToken cancellationToken = default);
-}

ejajBook/src/NexusReader.Application/Abstractions/Services/IPlatformService.cs

@@ -1,6 +0,0 @@
-namespace NexusReader.Application.Abstractions.Services;
-
-public interface IPlatformService
-{
-    Task VibrateAsync(int milliseconds);
-}

ejajBook/src/NexusReader.Application/Commands/Quiz/SubmitAnswerCommand.cs

@@ -1,5 +0,0 @@
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Commands.Quiz;
-
-public record SubmitAnswerCommand(int SelectedIndex, int CorrectIndex) : ICommand;

ejajBook/src/NexusReader.Application/Commands/Quiz/SubmitAnswerCommandHandler.cs

@@ -1,26 +0,0 @@
-using FluentResults;
-using NexusReader.Application.Abstractions.Messaging;
-using NexusReader.Application.Abstractions.Services;
-
-namespace NexusReader.Application.Commands.Quiz;
-
-internal sealed class SubmitAnswerCommandHandler : ICommandHandler<SubmitAnswerCommand>
-{
-    private readonly IPlatformService _platformService;
-
-    public SubmitAnswerCommandHandler(IPlatformService platformService)
-    {
-        _platformService = platformService;
-    }
-
-    public async Task<Result> Handle(SubmitAnswerCommand request, CancellationToken cancellationToken)
-    {
-        if (request.SelectedIndex == request.CorrectIndex)
-        {
-            await _platformService.VibrateAsync(50);
-            return Result.Ok();
-        }
-        
-        return Result.Fail("Incorrect answer.");
-    }
-}

ejajBook/src/NexusReader.Application/DependencyInjection.cs

@@ -1,19 +0,0 @@
-using Microsoft.Extensions.DependencyInjection;
-using NexusReader.Application.Mappings;
-
-namespace NexusReader.Application;
-
-public static class DependencyInjection
-{
-    public static IServiceCollection AddApplication(this IServiceCollection services)
-    {
-        services.AddMapsterConfiguration();
-
-        services.AddMediatR(config => 
-        {
-            config.RegisterServicesFromAssembly(typeof(DependencyInjection).Assembly);
-        });
-
-        return services;
-    }
-}

ejajBook/src/NexusReader.Application/Mappings/MappingConfig.cs

@@ -1,22 +0,0 @@
-using Mapster;
-using MapsterMapper;
-using Microsoft.Extensions.DependencyInjection;
-using System.Reflection;
-
-namespace NexusReader.Application.Mappings;
-
-public static class MappingConfig
-{
-    public static IServiceCollection AddMapsterConfiguration(this IServiceCollection services)
-    {
-        var config = TypeAdapterConfig.GlobalSettings;
-        
-        // Scan assembly and register mappings
-        config.Scan(Assembly.GetExecutingAssembly());
-
-        services.AddSingleton(config);
-        services.AddScoped<IMapper, ServiceMapper>();
-
-        return services;
-    }
-}

ejajBook/src/NexusReader.Application/NexusReader.Application.csproj

@@ -1,20 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <ItemGroup>
-    <ProjectReference Include="..\NexusReader.Domain\NexusReader.Domain.csproj" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <PackageReference Include="FluentResults" Version="4.0.0" />
-    <PackageReference Include="Mapster" Version="10.0.7" />
-    <PackageReference Include="Mapster.DependencyInjection" Version="10.0.7" />
-    <PackageReference Include="MediatR" Version="12.1.1" />
-  </ItemGroup>
-
-  <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-</Project>

ejajBook/src/NexusReader.Application/Queries/Graph/GetKnowledgeGraphQuery.cs

@@ -1,5 +0,0 @@
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Queries.Graph;
-
-public record GetKnowledgeGraphQuery : IQuery<GraphDataDto>;

ejajBook/src/NexusReader.Application/Queries/Graph/GetKnowledgeGraphQueryHandler.cs

@@ -1,30 +0,0 @@
-using FluentResults;
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Queries.Graph;
-
-internal sealed class GetKnowledgeGraphQueryHandler : IQueryHandler<GetKnowledgeGraphQuery, GraphDataDto>
-{
-    public Task<Result<GraphDataDto>> Handle(GetKnowledgeGraphQuery request, CancellationToken cancellationToken)
-    {
-        var nodes = new List<GraphNodeDto>
-        {
-            new("renesans-intro", "Renesans", "Concept"),
-            new("florencja", "Florencja", "Location"),
-            new("medyceusze", "Medyceusze", "Entity"),
-            new("da-vinci-ai", "Leonardo da Vinci", "Person"),
-            new("humanizm", "Humanizm", "Concept")
-        };
-
-        var links = new List<GraphLinkDto>
-        {
-            new("renesans-intro", "florencja", 1),
-            new("florencja", "medyceusze", 2),
-            new("medyceusze", "da-vinci-ai", 3),
-            new("renesans-intro", "humanizm", 1),
-            new("da-vinci-ai", "humanizm", 2)
-        };
-
-        return Task.FromResult(Result.Ok(new GraphDataDto(nodes, links)));
-    }
-}

ejajBook/src/NexusReader.Application/Queries/Graph/GraphViewModels.cs

@@ -1,5 +0,0 @@
-namespace NexusReader.Application.Queries.Graph;
-
-public record GraphNodeDto(string Id, string Label, string Group);
-public record GraphLinkDto(string Source, string Target, int Value);
-public record GraphDataDto(List<GraphNodeDto> Nodes, List<GraphLinkDto> Links);

ejajBook/src/NexusReader.Application/Queries/Quiz/GetQuizQuestionsQuery.cs

@@ -1,5 +0,0 @@
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Queries.Quiz;
-
-public record GetQuizQuestionsQuery(string ContextBlockId) : IQuery<QuizDto>;

ejajBook/src/NexusReader.Application/Queries/Quiz/GetQuizQuestionsQueryHandler.cs

@@ -1,20 +0,0 @@
-using FluentResults;
-using NexusReader.Application.Abstractions.Messaging;
-using NexusReader.Application.Abstractions.Services;
-
-namespace NexusReader.Application.Queries.Quiz;
-
-internal sealed class GetQuizQuestionsQueryHandler : IQueryHandler<GetQuizQuestionsQuery, QuizDto>
-{
-    private readonly IAiGenerateQuizService _aiService;
-
-    public GetQuizQuestionsQueryHandler(IAiGenerateQuizService aiService)
-    {
-        _aiService = aiService;
-    }
-
-    public async Task<Result<QuizDto>> Handle(GetQuizQuestionsQuery request, CancellationToken cancellationToken)
-    {
-        return await _aiService.GenerateQuizAsync(request.ContextBlockId, cancellationToken);
-    }
-}

ejajBook/src/NexusReader.Application/Queries/Quiz/QuizViewModels.cs

@@ -1,4 +0,0 @@
-namespace NexusReader.Application.Queries.Quiz;
-
-public record QuizQuestionDto(string Question, List<string> Options, int CorrectIndex);
-public record QuizDto(List<QuizQuestionDto> Questions);

ejajBook/src/NexusReader.Application/Queries/Reader/GetReaderPageQuery.cs

@@ -1,5 +0,0 @@
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Queries.Reader;
-
-public record GetReaderPageQuery : IQuery<ReaderPageViewModel>;

ejajBook/src/NexusReader.Application/Queries/Reader/GetReaderPageQueryHandler.cs

@@ -1,20 +0,0 @@
-using FluentResults;
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Queries.Reader;
-
-internal sealed class GetReaderPageQueryHandler : IQueryHandler<GetReaderPageQuery, ReaderPageViewModel>
-{
-    public Task<Result<ReaderPageViewModel>> Handle(GetReaderPageQuery request, CancellationToken cancellationToken)
-    {
-        var blocks = new List<ContentBlock>
-        {
-            new TextSegmentBlock("renesans-intro", "Renesans, nazywany również odrodzeniem, to epoka w historii kultury europejskiej, która zapoczątkowała odejście od średniowiecznego teocentryzmu na rzecz humanizmu. Narodził się we Włoszech, a dokładnie we Florencji, w XV wieku, skąd promieniował na całą Europę."),
-            new TextSegmentBlock("medyceusze", "Głównym mecenasem sztuki i nauki we Florencji był potężny ród Medyceuszy. To dzięki ich wsparciu miasto stało się kolebką nowożytnej myśli, gromadząc wokół siebie najwybitniejsze umysły tamtych czasów."),
-            new AiActionTriggerBlock("da-vinci-ai", "Leonardo da Vinci był jednym z najważniejszych twórców tego okresu. Czy chciałbyś dowiedzieć się więcej o jego najważniejszych wynalazkach, czy wolisz sprawdzić swoją dotychczasową wiedzę?", new List<string> { "Pokaż więcej", "Rozwiąż quiz" }),
-            new TextSegmentBlock("leonardo-detail", "Człowiek renesansu, uosabiany właśnie przez Leonarda, był wszechstronnie wykształcony. Interesował się sztuką, inżynierią, anatomią i filozofią, stawiając jednostkę w centrum wszechświata.")
-        };
-
-        return Task.FromResult(Result.Ok(new ReaderPageViewModel(blocks)));
-    }
-}

ejajBook/src/NexusReader.Application/Queries/Reader/ViewModels.cs

@@ -1,7 +0,0 @@
-namespace NexusReader.Application.Queries.Reader;
-
-public abstract record ContentBlock(string Id);
-public record TextSegmentBlock(string Id, string Content) : ContentBlock(Id);
-public record AiActionTriggerBlock(string Id, string Dialogue, List<string> ActionOptions) : ContentBlock(Id);
-
-public record ReaderPageViewModel(List<ContentBlock> Blocks);

ejajBook/src/NexusReader.Application/Queries/System/GetInitializationStatusQuery.cs

@@ -1,5 +0,0 @@
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Queries.System;
-
-public record GetInitializationStatusQuery : IQuery<string>;

ejajBook/src/NexusReader.Application/Queries/System/GetInitializationStatusQueryHandler.cs

@@ -1,12 +0,0 @@
-using FluentResults;
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Queries.System;
-
-internal sealed class GetInitializationStatusQueryHandler : IQueryHandler<GetInitializationStatusQuery, string>
-{
-    public Task<Result<string>> Handle(GetInitializationStatusQuery request, CancellationToken cancellationToken)
-    {
-        return Task.FromResult(Result.Ok("Nexus E-Reader Application is fully initialized and operational."));
-    }
-}

ejajBook/src/NexusReader.Domain/NexusReader.Domain.csproj

@@ -1,9 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-</Project>

ejajBook/src/NexusReader.Infrastructure/DependencyInjection.cs

@@ -1,14 +0,0 @@
-using Microsoft.Extensions.DependencyInjection;
-using NexusReader.Application.Abstractions.Services;
-using NexusReader.Infrastructure.Services;
-
-namespace NexusReader.Infrastructure;
-
-public static class DependencyInjection
-{
-    public static IServiceCollection AddInfrastructure(this IServiceCollection services)
-    {
-        services.AddTransient<IAiGenerateQuizService, FakeAiGenerateQuizService>();
-        return services;
-    }
-}

ejajBook/src/NexusReader.Infrastructure/NexusReader.Infrastructure.csproj

@@ -1,13 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <ItemGroup>
-    <ProjectReference Include="..\NexusReader.Application\NexusReader.Application.csproj" />
-  </ItemGroup>
-
-  <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-</Project>

ejajBook/src/NexusReader.Infrastructure/Services/FakeAiGenerateQuizService.cs

@@ -1,23 +0,0 @@
-using FluentResults;
-using NexusReader.Application.Abstractions.Services;
-using NexusReader.Application.Queries.Quiz;
-
-namespace NexusReader.Infrastructure.Services;
-
-public sealed class FakeAiGenerateQuizService : IAiGenerateQuizService
-{
-    public async Task<Result<QuizDto>> GenerateQuizAsync(string contextBlockId, CancellationToken cancellationToken = default)
-    {
-        // 2000ms delay to highlight Skeleton loader visually
-        await Task.Delay(2000, cancellationToken);
-
-        var fakeQuiz = new List<QuizQuestionDto>
-        {
-            new("Co było głównym centrum włoskiego Renesansu?", new List<string> { "Wenecja", "Rzym", "Florencja", "Mediolan" }, 2),
-            new("Kto stanowił wpływowy ród mecenasów sztuki?", new List<string> { "Habsburgowie", "Medyceusze", "Borgiowie", "Sforzowie" }, 1),
-            new("Jaką koncepcją filozoficzną charakteryzował się renesans?", new List<string> { "Teocentryzmem", "Nihilizmem", "Humanizmem", "Egzystencjalizmem" }, 2)
-        };
-
-        return Result.Ok(new QuizDto(fakeQuiz));
-    }
-}

ejajBook/src/NexusReader.Web.Client/Components/Atoms/NexusButton.razor

@@ -1,11 +0,0 @@
-<button class="nexus-btn @Class" @onclick="OnClick" disabled="@Disabled" @attributes="AdditionalAttributes">
-    @ChildContent
-</button>
-
-@code {
-    [Parameter] public RenderFragment? ChildContent { get; set; }
-    [Parameter] public string Class { get; set; } = string.Empty;
-    [Parameter] public EventCallback<Microsoft.AspNetCore.Components.Web.MouseEventArgs> OnClick { get; set; }
-    [Parameter] public bool Disabled { get; set; }
-    [Parameter(CaptureUnmatchedValues = true)] public Dictionary<string, object>? AdditionalAttributes { get; set; }
-}

ejajBook/src/NexusReader.Web.Client/Components/Atoms/NexusButton.razor.css

@@ -1,35 +0,0 @@
-.nexus-btn {
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
-    min-width: 44px;
-    min-height: 44px;
-    padding: 0.5rem 1rem;
-    background-color: var(--nexus-card);
-    color: var(--nexus-neon);
-    border: 1px solid var(--nexus-neon);
-    font-family: var(--nexus-font-sans);
-    font-weight: 500;
-    font-size: 1rem;
-    border-radius: 8px;
-    cursor: pointer;
-    transition: all 0.2s ease;
-    box-shadow: 0 0 5px rgba(0, 255, 153, 0.1);
-}
-
-.nexus-btn:hover:not(:disabled) {
-    background-color: rgba(0, 255, 153, 0.1);
-    box-shadow: 0 0 15px rgba(0, 255, 153, 0.3);
-}
-
-.nexus-btn:active:not(:disabled) {
-    transform: scale(0.98);
-}
-
-.nexus-btn:disabled {
-    opacity: 0.5;
-    cursor: not-allowed;
-    border-color: #555;
-    color: #555;
-    box-shadow: none;
-}

ejajBook/src/NexusReader.Web.Client/Components/Atoms/NexusIcon.razor

@@ -1,25 +0,0 @@
-<svg class="nexus-icon @Class" viewBox="0 0 24 24" fill="currentColor" width="@Size" height="@Size" @attributes="AdditionalAttributes">
-    @switch (Name.ToLowerInvariant())
-    {
-        case "robot":
-            <path d="M12 2a2 2 0 0 1 2 2c0 .74-.4 1.39-1 1.73V7h5a2 2 0 0 1 2 2v2a2 2 0 0 1 2 2v2a2 2 0 0 1-2 2v2a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2v-2a2 2 0 0 1-2-2v-2a2 2 0 0 1 2-2V9c0-1.1.9-2 2-2h5V5.73c-.6-.34-1-.99-1-1.73a2 2 0 0 1 2-2zM8 11v4h8v-4H8zm-2 0H4v4h2v-4zm14 0h-2v4h2v-4z" />
-            break;
-        case "play":
-            <path d="M8 5v14l11-7z" />
-            break;
-        case "check":
-            <path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z" />
-            break;
-        default:
-            <!-- Fallback circle -->
-            <circle cx="12" cy="12" r="10" />
-            break;
-    }
-</svg>
-
-@code {
-    [Parameter] public string Name { get; set; } = string.Empty;
-    [Parameter] public string Size { get; set; } = "24";
-    [Parameter] public string Class { get; set; } = string.Empty;
-    [Parameter(CaptureUnmatchedValues = true)] public Dictionary<string, object>? AdditionalAttributes { get; set; }
-}

ejajBook/src/NexusReader.Web.Client/Components/Atoms/NexusIcon.razor.css

@@ -1,10 +0,0 @@
-.nexus-icon {
-    display: inline-block;
-    vertical-align: middle;
-    transition: fill 0.2s ease, filter 0.2s ease;
-}
-
-.neon-glow {
-    fill: var(--nexus-neon);
-    filter: drop-shadow(0 0 4px var(--nexus-neon));
-}

ejajBook/src/NexusReader.Web.Client/Components/Atoms/NexusTypography.razor

@@ -1,25 +0,0 @@
-<div class="nexus-typography @VariantCssClass @Class" @attributes="AdditionalAttributes">
-    @ChildContent
-</div>
-
-@code {
-    [Parameter] public RenderFragment? ChildContent { get; set; }
-    [Parameter] public string Class { get; set; } = string.Empty;
-    [Parameter] public TypographyVariant Variant { get; set; } = TypographyVariant.UI;
-    [Parameter(CaptureUnmatchedValues = true)] public Dictionary<string, object>? AdditionalAttributes { get; set; }
-
-    private string VariantCssClass => Variant switch
-    {
-        TypographyVariant.Heading => "nexus-heading",
-        TypographyVariant.Ebook => "nexus-ebook",
-        TypographyVariant.UI => "nexus-ui",
-        _ => "nexus-ui"
-    };
-
-    public enum TypographyVariant
-    {
-        Heading,
-        Ebook,
-        UI
-    }
-}

ejajBook/src/NexusReader.Web.Client/Components/Atoms/NexusTypography.razor.css

@@ -1,25 +0,0 @@
-.nexus-typography {
-    margin: 0;
-}
-
-.nexus-heading {
-    font-family: var(--nexus-font-sans);
-    font-size: 2rem;
-    font-weight: 600;
-    color: var(--nexus-text);
-    margin-bottom: 1rem;
-}
-
-.nexus-ebook {
-    font-family: var(--nexus-font-serif);
-    font-size: 1.125rem;
-    line-height: 1.8;
-    color: var(--nexus-text);
-    margin-bottom: 1.2rem;
-}
-
-.nexus-ui {
-    font-family: var(--nexus-font-sans);
-    font-size: 1rem;
-    color: var(--nexus-text);
-}

ejajBook/src/NexusReader.Web.Client/Components/Molecules/AiAssistantBubble.razor

@@ -1,44 +0,0 @@
-@using NexusReader.Web.Client.Services
-@inject IQuizStateService QuizState
-
-<div class="ai-bubble">
-    <div class="ai-avatar">
-        <NexusIcon Name="robot" Size="32" Class="neon-glow" />
-    </div>
-    <div class="ai-content">
-        <NexusTypography Variant="NexusTypography.TypographyVariant.UI">@Dialogue</NexusTypography>
-        
-        @if (Actions != null && Actions.Any())
-        {
-            <div class="ai-actions">
-                @foreach (var action in Actions)
-                {
-                    <NexusButton OnClick="() => HandleActionClick(action)" Disabled="@_isQuizMode">@action</NexusButton>
-                }
-            </div>
-        }
-    </div>
-</div>
-
-@code {
-    [Parameter] public string ContextBlockId { get; set; } = string.Empty;
-    [Parameter] public string Dialogue { get; set; } = string.Empty;
-    [Parameter] public List<string> Actions { get; set; } = new();
-    [Parameter] public EventCallback<string> OnActionTriggered { get; set; }
-
-    private bool _isQuizMode = false;
-
-    private async Task HandleActionClick(string action)
-    {
-        if (action.Contains("quiz", StringComparison.OrdinalIgnoreCase))
-        {
-            _isQuizMode = true;
-            QuizState.RequestQuiz(ContextBlockId);
-        }
-
-        if (OnActionTriggered.HasDelegate)
-        {
-            await OnActionTriggered.InvokeAsync(action);
-        }
-    }
-}

ejajBook/src/NexusReader.Web.Client/Components/Molecules/AiAssistantBubble.razor.css

@@ -1,33 +0,0 @@
-.ai-bubble {
-    display: flex;
-    flex-direction: row;
-    gap: 1rem;
-    padding: 1.5rem;
-    background: rgba(30, 30, 30, 0.6);
-    backdrop-filter: blur(10px);
-    border: 1px solid rgba(0, 255, 153, 0.2);
-    border-left: 3px solid var(--nexus-neon);
-    border-radius: 8px;
-    box-shadow: -2px 0 10px rgba(0, 255, 153, 0.4);
-}
-
-.ai-avatar {
-    flex-shrink: 0;
-    display: flex;
-    align-items: flex-start;
-    padding-top: 0.2rem;
-}
-
-.ai-content {
-    display: flex;
-    flex-direction: column;
-    gap: 1rem;
-    flex-grow: 1;
-}
-
-.ai-actions {
-    display: flex;
-    flex-direction: row;
-    flex-wrap: wrap;
-    gap: 0.8rem;
-}

ejajBook/src/NexusReader.Web.Client/Components/Molecules/KnowledgeCheck.razor

@@ -1,84 +0,0 @@
-@using MediatR
-@using NexusReader.Application.Queries.Quiz
-@using NexusReader.Application.Commands.Quiz
-@inject IMediator Mediator
-
-<div class="knowledge-check-container">
-    @if (_isLoading)
-    {
-        <div class="skeleton-loader">
-            <div class="shimmer"></div>
-        </div>
-    }
-    else if (_quiz != null)
-    {
-        @foreach (var question in _quiz.Questions)
-        {
-            <div class="quiz-block @GetBlockClass(question)">
-                <NexusTypography Variant="NexusTypography.TypographyVariant.UI">@question.Question</NexusTypography>
-                
-                <div class="options-container">
-                    @for (int i = 0; i < question.Options.Count; i++)
-                    {
-                        var index = i;
-                        <button class="quiz-option @GetOptionClass(question, index)" 
-                                @onclick="() => SelectOptionAsync(question, index)"
-                                disabled="@_states.ContainsKey(question)">
-                            @question.Options[index]
-                        </button>
-                    }
-                </div>
-            </div>
-        }
-    }
-</div>
-
-@code {
-    [Parameter] public string ContextBlockId { get; set; } = string.Empty;
-
-    private bool _isLoading = true;
-    private QuizDto? _quiz;
-    
-    private Dictionary<QuizQuestionDto, (int SelectedIndex, bool IsCorrect)> _states = new();
-
-    protected override async Task OnInitializedAsync()
-    {
-        _isLoading = true;
-        var query = new GetQuizQuestionsQuery(ContextBlockId);
-        var result = await Mediator.Send(query);
-        
-        if (result.IsSuccess)
-            _quiz = result.Value;
-            
-        _isLoading = false;
-    }
-
-    private async Task SelectOptionAsync(QuizQuestionDto question, int index)
-    {
-        if (_states.ContainsKey(question)) return;
-
-        var cmd = new SubmitAnswerCommand(index, question.CorrectIndex);
-        var res = await Mediator.Send(cmd);
-        
-        _states[question] = (index, res.IsSuccess);
-    }
-
-    private string GetBlockClass(QuizQuestionDto question)
-    {
-        if (!_states.TryGetValue(question, out var state)) return "";
-        return state.IsCorrect ? "state-correct" : "state-incorrect";
-    }
-
-    private string GetOptionClass(QuizQuestionDto question, int index)
-    {
-        if (!_states.TryGetValue(question, out var state)) return "";
-        
-        if (state.SelectedIndex == index)
-            return state.IsCorrect ? "option-correct" : "option-incorrect";
-            
-        if (state.IsCorrect == false && question.CorrectIndex == index)
-            return "option-revealed-correct";
-
-        return "option-faded";
-    }
-}

ejajBook/src/NexusReader.Web.Client/Components/Molecules/KnowledgeCheck.razor.css

@@ -1,107 +0,0 @@
-.knowledge-check-container {
-    width: 100%;
-    margin-top: 1rem;
-    display: flex;
-    flex-direction: column;
-    gap: 1.5rem;
-}
-
-.skeleton-loader {
-    width: 100%;
-    height: 120px;
-    background-color: var(--nexus-card);
-    border-radius: 8px;
-    position: relative;
-    overflow: hidden;
-    border: 1px solid rgba(255,255,255,0.05);
-}
-
-.skeleton-loader .shimmer {
-    position: absolute;
-    top: 0;
-    left: -100%;
-    width: 50%;
-    height: 100%;
-    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
-    animation: loadingShimmer 1.5s infinite ease-in-out;
-}
-
-@keyframes loadingShimmer {
-    100% { left: 200%; }
-}
-
-.quiz-block {
-    display: flex;
-    flex-direction: column;
-    gap: 1rem;
-    padding: 1rem;
-    background-color: var(--nexus-card);
-    border-radius: 8px;
-    border: 1px solid rgba(255,255,255,0.1);
-    transition: all 0.3s ease;
-}
-
-.quiz-block.state-correct {
-    border-color: var(--nexus-neon);
-    box-shadow: 0 0 10px rgba(0, 255, 153, 0.1);
-}
-
-.quiz-block.state-incorrect {
-    border-color: rgba(255, 60, 60, 0.6);
-    animation: shakePulse 0.4s ease-in-out;
-}
-
-@keyframes shakePulse {
-    0% { transform: translateX(0); }
-    25% { transform: translateX(-4px); box-shadow: -4px 0 10px rgba(255,60,60,0.3); }
-    50% { transform: translateX(4px); box-shadow: 4px 0 10px rgba(255,60,60,0.3); }
-    75% { transform: translateX(-4px); box-shadow: -4px 0 10px rgba(255,60,60,0.3); }
-    100% { transform: translateX(0); }
-}
-
-.options-container {
-    display: flex;
-    flex-direction: column;
-    gap: 0.5rem;
-}
-
-.quiz-option {
-    padding: 0.8rem;
-    background-color: var(--nexus-card);
-    border: 1px solid rgba(255,255,255,0.1);
-    color: var(--nexus-text);
-    border-radius: 6px;
-    cursor: pointer;
-    text-align: left;
-    transition: all 0.2s;
-    font-family: var(--nexus-font-sans);
-}
-
-.quiz-option:hover:not(:disabled) {
-    background-color: rgba(255,255,255,0.05);
-}
-
-.quiz-option:disabled {
-    cursor: default;
-}
-
-.option-correct {
-    background-color: rgba(0, 255, 153, 0.15) !important;
-    border-color: var(--nexus-neon) !important;
-    color: white;
-}
-
-.option-incorrect {
-    background-color: rgba(255, 60, 60, 0.15) !important;
-    border-color: #ff3c3c !important;
-    color: white;
-}
-
-.option-revealed-correct {
-    border-color: var(--nexus-neon) !important;
-    border-style: dashed;
-}
-
-.option-faded {
-    opacity: 0.5;
-}

ejajBook/src/NexusReader.Web.Client/Components/Organisms/KnowledgeGraph.razor

@@ -1,98 +0,0 @@
-@using MediatR
-@using NexusReader.Application.Queries.Graph
-@using Microsoft.JSInterop
-@using NexusReader.Web.Client.Services
-@implements IAsyncDisposable
-@inject IMediator Mediator
-@inject IJSRuntime JS
-@inject IFocusModeService FocusMode
-
-<div class="knowledge-graph-container" id="@ContainerId">
-    @if (GraphData == null)
-    {
-        <div class="loading-state">
-            <NexusIcon Name="robot" Size="48" Class="neon-glow" />
-            <NexusTypography>Analyzing Chapter Nodes...</NexusTypography>
-        </div>
-    }
-</div>
-
-@code {
-    [Parameter] public EventCallback<string> OnNodeSelected { get; set; }
-
-    private string ContainerId = "d3-graph-container";
-    private GraphDataDto? GraphData;
-    private IJSObjectReference? _module;
-    private DotNetObjectReference<KnowledgeGraph>? _dotNetHelper;
-
-    protected override void OnInitialized()
-    {
-        FocusMode.OnFocusModeChanged += HandleFocusSimulation;
-    }
-
-    protected override async Task OnAfterRenderAsync(bool firstRender)
-    {
-        if (firstRender)
-        {
-            var result = await Mediator.Send(new GetKnowledgeGraphQuery());
-            if (result.IsSuccess)
-            {
-                GraphData = result.Value;
-                StateHasChanged();
-                await InitializeGraphAsync();
-            }
-        }
-    }
-
-    private async Task InitializeGraphAsync()
-    {
-        _module = await JS.InvokeAsync<IJSObjectReference>("import", "./js/knowledgeGraph.js");
-        _dotNetHelper = DotNetObjectReference.Create(this);
-        await _module.InvokeVoidAsync("mount", ContainerId, GraphData, _dotNetHelper);
-    }
-
-    [JSInvokable]
-    public async Task OnNodeClicked(string nodeId)
-    {
-        if (OnNodeSelected.HasDelegate)
-        {
-            await OnNodeSelected.InvokeAsync(nodeId);
-        }
-    }
-
-    private async void HandleFocusSimulation()
-    {
-        if (_module == null) return;
-        try
-        {
-            if (FocusMode.IsFocusModeActive)
-                await _module.InvokeVoidAsync("pause");
-            else
-                await _module.InvokeVoidAsync("resume");
-        }
-        catch { }
-    }
-
-    public async ValueTask DisposeAsync()
-    {
-        FocusMode.OnFocusModeChanged -= HandleFocusSimulation;
-        try
-        {
-            if (_module is not null)
-            {
-                await _module.InvokeVoidAsync("unmount", ContainerId);
-                await _module.DisposeAsync();
-            }
-        }
-        catch (JSDisconnectedException)
-        {
-            // Ignored, the circuit is already closed
-        }
-        catch (TaskCanceledException)
-        {
-            // Ignored, the circuit is already closed
-        }
-        
-        _dotNetHelper?.Dispose();
-    }
-}

ejajBook/src/NexusReader.Web.Client/Components/Organisms/KnowledgeGraph.razor.css

@@ -1,30 +0,0 @@
-.knowledge-graph-container {
-    width: 100%;
-    height: 100vh;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    background-color: transparent;
-    overflow: hidden;
-}
-
-.loading-state {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    gap: 1rem;
-    animation: pulse 2s infinite ease-in-out;
-}
-
-@keyframes pulse {
-    0% { opacity: 0.6; }
-    50% { opacity: 1; }
-    100% { opacity: 0.6; }
-}
-
-::deep .nexus-node-active {
-    stroke: var(--nexus-neon) !important;
-    stroke-width: 4px !important;
-    filter: drop-shadow(0 0 8px var(--nexus-neon));
-    transition: all 0.3s ease;
-}

ejajBook/src/NexusReader.Web.Client/Components/Organisms/ReaderCanvas.razor

@@ -1,86 +0,0 @@
-@using MediatR
-@using NexusReader.Application.Queries.Reader
-@using Microsoft.JSInterop
-@using NexusReader.Web.Client.Services
-@implements IDisposable
-@inject IMediator Mediator
-@inject IJSRuntime JS
-@inject IThemeService ThemeService
-@inject IFocusModeService FocusMode
-
-<div class="reader-canvas @(ThemeService.IsLightMode ? "theme-light" : "")" style="padding: 2rem 0;">
-    <div style="display: flex; justify-content: flex-end; align-items: center; margin-bottom: 2rem; gap: 1rem; padding: 0 2rem;">
-        <NexusButton OnClick="@(_ => ThemeService.ToggleTheme())">
-            @(ThemeService.IsLightMode ? "Turn Off Lights" : "Turn On Lights")
-        </NexusButton>
-        <button @onclick="FocusMode.ToggleAsync" title="Focus Mode (F)" style="background:none; border:none; cursor:pointer; padding: 0;">
-            <NexusIcon Name="target" Size="28" Class="@(FocusMode.IsFocusModeActive ? "neon-glow" : "")" />
-        </button>
-    </div>
-
-    @if (ViewModel == null)
-    {
-        <NexusTypography Variant="NexusTypography.TypographyVariant.UI">@StatusMessage</NexusTypography>
-    }
-    else
-    {
-        <div class="reader-flow-container">
-            @foreach (var block in ViewModel.Blocks)
-            {
-                <div id="@block.Id" class="block-wrapper">
-                    @if (block is TextSegmentBlock textSegment)
-                    {
-                        <NexusTypography Variant="NexusTypography.TypographyVariant.Ebook">@textSegment.Content</NexusTypography>
-                    }
-                    else if (block is AiActionTriggerBlock aiTrigger)
-                    {
-                        <AiAssistantBubble 
-                            ContextBlockId="@block.Id"
-                            Dialogue="@aiTrigger.Dialogue" 
-                            Actions="@aiTrigger.ActionOptions" 
-                            OnActionTriggered="HandleAiAction" />
-                    }
-                </div>
-            }
-        </div>
-    }
-</div>
-
-@code {
-    private ReaderPageViewModel? ViewModel;
-    private string StatusMessage = "Loading chapter...";
-
-    protected override async Task OnInitializedAsync()
-    {
-        ThemeService.OnThemeChanged += StateHasChanged;
-
-        var result = await Mediator.Send(new GetReaderPageQuery());
-        if (result.IsSuccess)
-        {
-            ViewModel = result.Value;
-        }
-        else
-        {
-            StatusMessage = "Failed to load chapter content.";
-        }
-    }
-
-    private void HandleAiAction(string action)
-    {
-        Console.WriteLine($"Action Triggered from Bubble: {action}");
-    }
-
-    public async Task ScrollToNodeAsync(string id)
-    {
-        try
-        {
-            await JS.InvokeVoidAsync("eval", $"document.getElementById('{id}')?.scrollIntoView({{ behavior: 'smooth', block: 'center' }});");
-        } 
-        catch { }
-    }
-
-    public void Dispose()
-    {
-        ThemeService.OnThemeChanged -= StateHasChanged;
-    }
-}

ejajBook/src/NexusReader.Web.Client/Components/Organisms/ReaderCanvas.razor.css

@@ -1,12 +0,0 @@
-.reader-canvas {
-    max-width: 800px;
-    margin: 0 auto;
-    padding: 2rem 1rem;
-    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
-}
-
-.reader-flow-container {
-    display: flex;
-    flex-direction: column;
-    gap: 1.5rem;
-}

ejajBook/src/NexusReader.Web.Client/Layout/MainLayout.razor

@@ -1,10 +0,0 @@
-@inherits LayoutComponentBase
-
-@Body
-
-<div id="blazor-error-ui" data-nosnippet>
-    An unhandled error has occurred.
-    <a href="." class="reload">Reload</a>
-    <span class="dismiss">🗙</span>
-</div>
-

ejajBook/src/NexusReader.Web.Client/Layout/MainLayout.razor.css

@@ -1,20 +0,0 @@
-#blazor-error-ui {
-    color-scheme: light only;
-    background: lightyellow;
-    bottom: 0;
-    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
-    box-sizing: border-box;
-    display: none;
-    left: 0;
-    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
-    position: fixed;
-    width: 100%;
-    z-index: 1000;
-}
-
-    #blazor-error-ui .dismiss {
-        cursor: pointer;
-        position: absolute;
-        right: 0.75rem;
-        top: 0.5rem;
-    }

ejajBook/src/NexusReader.Web.Client/Layout/ReconnectModal.razor

@@ -1,31 +0,0 @@
-<script type="module" src="@Assets["Layout/ReconnectModal.razor.js"]"></script>
-
-<dialog id="components-reconnect-modal" data-nosnippet>
-    <div class="components-reconnect-container">
-        <div class="components-rejoining-animation" aria-hidden="true">
-            <div></div>
-            <div></div>
-        </div>
-        <p class="components-reconnect-first-attempt-visible">
-            Rejoining the server...
-        </p>
-        <p class="components-reconnect-repeated-attempt-visible">
-            Rejoin failed... trying again in <span id="components-seconds-to-next-attempt"></span> seconds.
-        </p>
-        <p class="components-reconnect-failed-visible">
-            Failed to rejoin.<br />Please retry or reload the page.
-        </p>
-        <button id="components-reconnect-button" class="components-reconnect-failed-visible">
-            Retry
-        </button>
-        <p class="components-pause-visible">
-            The session has been paused by the server.
-        </p>
-        <p class="components-resume-failed-visible">
-            Failed to resume the session.<br />Please retry or reload the page.
-        </p>
-        <button id="components-resume-button" class="components-pause-visible components-resume-failed-visible">
-            Resume
-        </button>
-    </div>
-</dialog>

ejajBook/src/NexusReader.Web.Client/Layout/ReconnectModal.razor.css

@@ -1,157 +0,0 @@
-.components-reconnect-first-attempt-visible,
-.components-reconnect-repeated-attempt-visible,
-.components-reconnect-failed-visible,
-.components-pause-visible,
-.components-resume-failed-visible,
-.components-rejoining-animation {
-    display: none;
-}
-
-#components-reconnect-modal.components-reconnect-show .components-reconnect-first-attempt-visible,
-#components-reconnect-modal.components-reconnect-show .components-rejoining-animation,
-#components-reconnect-modal.components-reconnect-paused .components-pause-visible,
-#components-reconnect-modal.components-reconnect-resume-failed .components-resume-failed-visible,
-#components-reconnect-modal.components-reconnect-retrying,
-#components-reconnect-modal.components-reconnect-retrying .components-reconnect-repeated-attempt-visible,
-#components-reconnect-modal.components-reconnect-retrying .components-rejoining-animation,
-#components-reconnect-modal.components-reconnect-failed,
-#components-reconnect-modal.components-reconnect-failed .components-reconnect-failed-visible {
-    display: block;
-}
-
-
-#components-reconnect-modal {
-    background-color: white;
-    width: 20rem;
-    margin: 20vh auto;
-    padding: 2rem;
-    border: 0;
-    border-radius: 0.5rem;
-    box-shadow: 0 3px 6px 2px rgba(0, 0, 0, 0.3);
-    opacity: 0;
-    transition: display 0.5s allow-discrete, overlay 0.5s allow-discrete;
-    animation: components-reconnect-modal-fadeOutOpacity 0.5s both;
-    &[open]
-
-{
-    animation: components-reconnect-modal-slideUp 1.5s cubic-bezier(.05, .89, .25, 1.02) 0.3s, components-reconnect-modal-fadeInOpacity 0.5s ease-in-out 0.3s;
-    animation-fill-mode: both;
-}
-
-}
-
-#components-reconnect-modal::backdrop {
-    background-color: rgba(0, 0, 0, 0.4);
-    animation: components-reconnect-modal-fadeInOpacity 0.5s ease-in-out;
-    opacity: 1;
-}
-
-@keyframes components-reconnect-modal-slideUp {
-    0% {
-        transform: translateY(30px) scale(0.95);
-    }
-
-    100% {
-        transform: translateY(0);
-    }
-}
-
-@keyframes components-reconnect-modal-fadeInOpacity {
-    0% {
-        opacity: 0;
-    }
-
-    100% {
-        opacity: 1;
-    }
-}
-
-@keyframes components-reconnect-modal-fadeOutOpacity {
-    0% {
-        opacity: 1;
-    }
-
-    100% {
-        opacity: 0;
-    }
-}
-
-.components-reconnect-container {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    gap: 1rem;
-}
-
-#components-reconnect-modal p {
-    margin: 0;
-    text-align: center;
-}
-
-#components-reconnect-modal button {
-    border: 0;
-    background-color: #6b9ed2;
-    color: white;
-    padding: 4px 24px;
-    border-radius: 4px;
-}
-
-    #components-reconnect-modal button:hover {
-        background-color: #3b6ea2;
-    }
-
-    #components-reconnect-modal button:active {
-        background-color: #6b9ed2;
-    }
-
-.components-rejoining-animation {
-    position: relative;
-    width: 80px;
-    height: 80px;
-}
-
-    .components-rejoining-animation div {
-        position: absolute;
-        border: 3px solid #0087ff;
-        opacity: 1;
-        border-radius: 50%;
-        animation: components-rejoining-animation 1.5s cubic-bezier(0, 0.2, 0.8, 1) infinite;
-    }
-
-        .components-rejoining-animation div:nth-child(2) {
-            animation-delay: -0.5s;
-        }
-
-@keyframes components-rejoining-animation {
-    0% {
-        top: 40px;
-        left: 40px;
-        width: 0;
-        height: 0;
-        opacity: 0;
-    }
-
-    4.9% {
-        top: 40px;
-        left: 40px;
-        width: 0;
-        height: 0;
-        opacity: 0;
-    }
-
-    5% {
-        top: 40px;
-        left: 40px;
-        width: 0;
-        height: 0;
-        opacity: 1;
-    }
-
-    100% {
-        top: 0px;
-        left: 0px;
-        width: 80px;
-        height: 80px;
-        opacity: 0;
-    }
-}

ejajBook/src/NexusReader.Web.Client/Layout/ReconnectModal.razor.js

@@ -1,63 +0,0 @@
-// Set up event handlers
-const reconnectModal = document.getElementById("components-reconnect-modal");
-reconnectModal.addEventListener("components-reconnect-state-changed", handleReconnectStateChanged);
-
-const retryButton = document.getElementById("components-reconnect-button");
-retryButton.addEventListener("click", retry);
-
-const resumeButton = document.getElementById("components-resume-button");
-resumeButton.addEventListener("click", resume);
-
-function handleReconnectStateChanged(event) {
-    if (event.detail.state === "show") {
-        reconnectModal.showModal();
-    } else if (event.detail.state === "hide") {
-        reconnectModal.close();
-    } else if (event.detail.state === "failed") {
-        document.addEventListener("visibilitychange", retryWhenDocumentBecomesVisible);
-    } else if (event.detail.state === "rejected") {
-        location.reload();
-    }
-}
-
-async function retry() {
-    document.removeEventListener("visibilitychange", retryWhenDocumentBecomesVisible);
-
-    try {
-        // Reconnect will asynchronously return:
-        // - true to mean success
-        // - false to mean we reached the server, but it rejected the connection (e.g., unknown circuit ID)
-        // - exception to mean we didn't reach the server (this can be sync or async)
-        const successful = await Blazor.reconnect();
-        if (!successful) {
-            // We have been able to reach the server, but the circuit is no longer available.
-            // We'll reload the page so the user can continue using the app as quickly as possible.
-            const resumeSuccessful = await Blazor.resumeCircuit();
-            if (!resumeSuccessful) {
-                location.reload();
-            } else {
-                reconnectModal.close();
-            }
-        }
-    } catch (err) {
-        // We got an exception, server is currently unavailable
-        document.addEventListener("visibilitychange", retryWhenDocumentBecomesVisible);
-    }
-}
-
-async function resume() {
-    try {
-        const successful = await Blazor.resumeCircuit();
-        if (!successful) {
-            location.reload();
-        }
-    } catch {
-        reconnectModal.classList.replace("components-reconnect-paused", "components-reconnect-resume-failed");
-    }
-}
-
-async function retryWhenDocumentBecomesVisible() {
-    if (document.visibilityState === "visible") {
-        await retry();
-    }
-}

ejajBook/src/NexusReader.Web.Client/NexusReader.Web.Client.csproj

@@ -1,22 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
-
-  <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-    <NoDefaultLaunchSettingsFile>true</NoDefaultLaunchSettingsFile>
-    <StaticWebAssetProjectMode>Default</StaticWebAssetProjectMode>
-    <BlazorDisableThrowNavigationException>true</BlazorDisableThrowNavigationException>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="MediatR" Version="12.1.1" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="10.0.6" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\NexusReader.Application\NexusReader.Application.csproj" />
-    <ProjectReference Include="..\NexusReader.Infrastructure\NexusReader.Infrastructure.csproj" />
-  </ItemGroup>
-
-</Project>

ejajBook/src/NexusReader.Web.Client/Pages/Home.razor

@@ -1,91 +0,0 @@
-@page "/"
-@using NexusReader.Web.Client.Services
-@implements IAsyncDisposable
-@inject IQuizStateService QuizState
-@inject IFocusModeService FocusMode
-@inject IJSRuntime JS
-<PageTitle>Nexus E-Reader</PageTitle>
-
-<div class="split-layout @(FocusMode.IsFocusModeActive ? "focus-mode-active" : "")">
-    <div class="reader-pane">
-        <ReaderCanvas @ref="readerCanvas" />
-    </div>
-    <div class="graph-pane">
-        <div class="graph-section">
-            <KnowledgeGraph OnNodeSelected="HandleNodeSelected" />
-        </div>
-        
-        @if (!string.IsNullOrEmpty(_activeQuizBlockId))
-        {
-            <div class="quiz-section">
-                <KnowledgeCheck ContextBlockId="@_activeQuizBlockId" />
-            </div>
-        }
-    </div>
-</div>
-
-@code {
-    private ReaderCanvas? readerCanvas;
-    private string? _activeQuizBlockId;
-    
-    private IJSObjectReference? _interopModule;
-    private IJSObjectReference? _keydownHandler;
-    private DotNetObjectReference<Home>? _dotNetRef;
-
-    protected override async Task OnInitializedAsync()
-    {
-        QuizState.OnQuizRequested += HandleQuizRequested;
-        FocusMode.OnFocusModeChanged += StateHasChanged;
-        await FocusMode.InitializeAsync();
-    }
-
-    protected override async Task OnAfterRenderAsync(bool firstRender)
-    {
-        if (firstRender)
-        {
-            try {
-                _interopModule = await JS.InvokeAsync<IJSObjectReference>("import", "./js/focusInterop.js");
-                _dotNetRef = DotNetObjectReference.Create(this);
-                _keydownHandler = await _interopModule.InvokeAsync<IJSObjectReference>("attachKeyboardListener", _dotNetRef);
-            } catch { } /* ignored dynamically */
-        }
-    }
-
-    [JSInvokable]
-    public async Task OnFocusKeypressed()
-    {
-        await FocusMode.ToggleAsync();
-        StateHasChanged();
-    }
-
-    private async Task HandleNodeSelected(string nodeId)
-    {
-        if (readerCanvas != null)
-        {
-            await readerCanvas.ScrollToNodeAsync(nodeId);
-        }
-    }
-
-    private void HandleQuizRequested(string blockId)
-    {
-        _activeQuizBlockId = blockId;
-        StateHasChanged();
-    }
-
-    public async ValueTask DisposeAsync()
-    {
-        QuizState.OnQuizRequested -= HandleQuizRequested;
-        FocusMode.OnFocusModeChanged -= StateHasChanged;
-        
-        if (_interopModule != null && _keydownHandler != null)
-        {
-            try {
-                await _interopModule.InvokeVoidAsync("detachKeyboardListener", _keydownHandler);
-                await _interopModule.DisposeAsync();
-                await _keydownHandler.DisposeAsync();
-            } catch { } // Circuit disconnected catch explicitly
-        }
-        
-        _dotNetRef?.Dispose();
-    }
-}

ejajBook/src/NexusReader.Web.Client/Pages/Home.razor.css

@@ -1,55 +0,0 @@
-.split-layout {
-    display: flex;
-    flex-direction: row;
-    width: 100%;
-    height: 100vh;
-}
-
-.reader-pane {
-    flex: 1;
-    overflow-y: auto;
-    padding: 0 2rem;
-    transition: all 0.3s ease;
-}
-
-.graph-pane {
-    flex: 1;
-    background: linear-gradient(135deg, #121212 0%, #1a1a1a 100%);
-    border-left: 1px solid rgba(255, 255, 255, 0.1);
-    color: #ffffff;
-    height: 100vh;
-    display: flex;
-    flex-direction: column;
-    overflow-y: auto;
-    max-width: 50%;
-    opacity: 1;
-    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
-}
-
-.split-layout.focus-mode-active .graph-pane {
-    flex: 0;
-    max-width: 0;
-    opacity: 0;
-    border-color: transparent;
-    padding: 0;
-}
-
-.graph-section {
-    width: 100%;
-    min-height: 50vh;
-    flex-shrink: 0;
-}
-
-.quiz-section {
-    padding: 0 2rem 2rem 2rem;
-    display: flex;
-    flex-direction: column;
-}
-
-.reader-pane::-webkit-scrollbar {
-    width: 6px;
-}
-.reader-pane::-webkit-scrollbar-thumb {
-    background-color: var(--nexus-card);
-    border-radius: 4px;
-}

ejajBook/src/NexusReader.Web.Client/Pages/NotFound.razor

@@ -1,5 +0,0 @@
-@page "/not-found"
-@layout MainLayout
-
-<h3>Not Found</h3>
-<p>Sorry, the content you are looking for does not exist.</p>

ejajBook/src/NexusReader.Web.Client/Program.cs

@@ -1,19 +0,0 @@
-using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
-using NexusReader.Application.Abstractions.Services;
-using NexusReader.Web.Client.Services;
-using NexusReader.Application.Queries.Quiz;
-using NexusReader.Application;
-
-using NexusReader.Infrastructure;
-
-var builder = WebAssemblyHostBuilder.CreateDefault(args);
-
-builder.Services.AddScoped<IPlatformService, WebPlatformService>();
-builder.Services.AddScoped<IThemeService, ThemeService>();
-builder.Services.AddScoped<IQuizStateService, QuizStateService>();
-builder.Services.AddScoped<IFocusModeService, FocusModeService>();
-
-builder.Services.AddApplication();
-builder.Services.AddInfrastructure();
-
-await builder.Build().RunAsync();

ejajBook/src/NexusReader.Web.Client/Routes.razor

@@ -1,6 +0,0 @@
-<Router AppAssembly="typeof(Program).Assembly" NotFoundPage="typeof(Pages.NotFound)">
-    <Found Context="routeData">
-        <RouteView RouteData="routeData" DefaultLayout="typeof(Layout.MainLayout)" />
-        <FocusOnNavigate RouteData="routeData" Selector="h1" />
-    </Found>
-</Router>

ejajBook/src/NexusReader.Web.Client/Services/FocusModeService.cs

@@ -1,44 +0,0 @@
-using Microsoft.JSInterop;
-
-namespace NexusReader.Web.Client.Services;
-
-public sealed class FocusModeService : IFocusModeService
-{
-    private readonly IJSRuntime _jsRuntime;
-    public bool IsFocusModeActive { get; private set; }
-    public event Action? OnFocusModeChanged;
-
-    public FocusModeService(IJSRuntime jsRuntime)
-    {
-        _jsRuntime = jsRuntime;
-    }
-
-    public async Task InitializeAsync()
-    {
-        try
-        {
-            var value = await _jsRuntime.InvokeAsync<string>("localStorage.getItem", "nexus_focus_mode");
-            if (value == "true" && !IsFocusModeActive)
-            {
-                IsFocusModeActive = true;
-                OnFocusModeChanged?.Invoke();
-            }
-        }
-        catch
-        {
-            // Ignored during pre-rendering or unsupported environments
-        }
-    }
-
-    public async Task ToggleAsync()
-    {
-        IsFocusModeActive = !IsFocusModeActive;
-        OnFocusModeChanged?.Invoke();
-
-        try
-        {
-            await _jsRuntime.InvokeVoidAsync("localStorage.setItem", "nexus_focus_mode", IsFocusModeActive ? "true" : "false");
-        }
-        catch { }
-    }
-}

ejajBook/src/NexusReader.Web.Client/Services/IFocusModeService.cs

@@ -1,9 +0,0 @@
-namespace NexusReader.Web.Client.Services;
-
-public interface IFocusModeService
-{
-    bool IsFocusModeActive { get; }
-    event Action? OnFocusModeChanged;
-    Task InitializeAsync();
-    Task ToggleAsync();
-}

ejajBook/src/NexusReader.Web.Client/Services/IQuizStateService.cs

@@ -1,8 +0,0 @@
-namespace NexusReader.Web.Client.Services;
-
-public interface IQuizStateService
-{
-    string? CurrentQuizBlockId { get; }
-    event Action<string>? OnQuizRequested;
-    void RequestQuiz(string blockId);
-}

ejajBook/src/NexusReader.Web.Client/Services/IThemeService.cs

@@ -1,8 +0,0 @@
-namespace NexusReader.Web.Client.Services;
-
-public interface IThemeService
-{
-    bool IsLightMode { get; }
-    event Action? OnThemeChanged;
-    void ToggleTheme();
-}

ejajBook/src/NexusReader.Web.Client/Services/QuizStateService.cs

@@ -1,13 +0,0 @@
-namespace NexusReader.Web.Client.Services;
-
-public sealed class QuizStateService : IQuizStateService
-{
-    public string? CurrentQuizBlockId { get; private set; }
-    public event Action<string>? OnQuizRequested;
-
-    public void RequestQuiz(string blockId)
-    {
-        CurrentQuizBlockId = blockId;
-        OnQuizRequested?.Invoke(blockId);
-    }
-}

ejajBook/src/NexusReader.Web.Client/Services/ThemeService.cs

@@ -1,13 +0,0 @@
-namespace NexusReader.Web.Client.Services;
-
-public sealed class ThemeService : IThemeService
-{
-    public bool IsLightMode { get; private set; } = false;
-    public event Action? OnThemeChanged;
-
-    public void ToggleTheme()
-    {
-        IsLightMode = !IsLightMode;
-        OnThemeChanged?.Invoke();
-    }
-}

ejajBook/src/NexusReader.Web.Client/Services/WebPlatformService.cs

@@ -1,26 +0,0 @@
-using Microsoft.JSInterop;
-using NexusReader.Application.Abstractions.Services;
-
-namespace NexusReader.Web.Client.Services;
-
-public sealed class WebPlatformService : IPlatformService
-{
-    private readonly IJSRuntime _jsRuntime;
-
-    public WebPlatformService(IJSRuntime jsRuntime)
-    {
-        _jsRuntime = jsRuntime;
-    }
-
-    public async Task VibrateAsync(int milliseconds)
-    {
-        try 
-        {
-            await _jsRuntime.InvokeVoidAsync("navigator.vibrate", milliseconds);
-        }
-        catch 
-        {
-            // Ignore on platforms without vibration
-        }
-    }
-}

ejajBook/src/NexusReader.Web.Client/_Imports.razor

@@ -1,13 +0,0 @@
-@using System.Net.Http
-@using System.Net.Http.Json
-@using Microsoft.AspNetCore.Components.Forms
-@using Microsoft.AspNetCore.Components.Routing
-@using Microsoft.AspNetCore.Components.Web
-@using static Microsoft.AspNetCore.Components.Web.RenderMode
-@using Microsoft.AspNetCore.Components.Web.Virtualization
-@using Microsoft.JSInterop
-@using NexusReader.Web.Client
-@using NexusReader.Web.Client.Layout
-@using NexusReader.Web.Client.Components.Atoms
-@using NexusReader.Web.Client.Components.Molecules
-@using NexusReader.Web.Client.Components.Organisms

ejajBook/src/NexusReader.Web.Client/wwwroot/js/focusInterop.js

@@ -1,20 +0,0 @@
-export function attachKeyboardListener(dotNetHelper) {
-    const handler = (e) => {
-        // Exclude inputs, textareas, etc.
-        const activeNode = document.activeElement ? document.activeElement.nodeName.toLowerCase() : '';
-        if (activeNode === 'input' || activeNode === 'textarea') return;
-
-        if (e.key === 'f' || e.key === 'F') {
-            dotNetHelper.invokeMethodAsync('OnFocusKeypressed');
-        }
-    };
-    
-    window.addEventListener('keydown', handler);
-    return handler;
-}
-
-export function detachKeyboardListener(handler) {
-    if (handler) {
-        window.removeEventListener('keydown', handler);
-    }
-}

ejajBook/src/NexusReader.Web.Client/wwwroot/js/knowledgeGraph.js

@@ -1,150 +0,0 @@
-import * as d3 from 'https://esm.sh/d3@7';
-
-let simulation;
-
-export function mount(containerId, data, dotNetHelper) {
-    const container = document.getElementById(containerId);
-    if (!container) return;
-
-    const width = container.clientWidth || 400;
-    const height = container.clientHeight || 400;
-
-    // Create SVG
-    const svg = d3.select(container).append("svg")
-        .attr("viewBox", [0, 0, width, height])
-        .attr("width", "100%")
-        .attr("height", "100%");
-
-    // Radial gradient for Nebula effect
-    const defs = svg.append("defs");
-    const radialGradient = defs.append("radialGradient")
-        .attr("id", "nebulaGlow")
-        .attr("cx", "50%")
-        .attr("cy", "50%")
-        .attr("r", "50%");
-    radialGradient.append("stop").attr("offset", "0%").attr("stop-color", "var(--nexus-neon)").attr("stop-opacity", 1);
-    radialGradient.append("stop").attr("offset", "100%").attr("stop-color", "var(--nexus-neon)").attr("stop-opacity", 0);
-
-    // Root Group for Zoom
-    const rootGroup = svg.append("g").attr("class", "zoom-containment");
-
-    // Attach Zoom Behavior
-    const zoom = d3.zoom()
-        .scaleExtent([0.5, 4])
-        .on("zoom", (e) => rootGroup.attr("transform", e.transform));
-    svg.call(zoom);
-
-    // Subtle Link Distance & Charge
-    simulation = d3.forceSimulation(data.nodes)
-        .force("link", d3.forceLink(data.links).id(d => d.id).distance(60))
-        .force("charge", d3.forceManyBody().strength(-150))
-        .force("center", d3.forceCenter(width / 2, height / 2))
-        .force("collide", d3.forceCollide().radius(25));
-
-    // Links
-    const link = rootGroup.append("g")
-        .selectAll("line")
-        .data(data.links)
-        .join("line")
-        .attr("stroke", "#444")
-        .attr("stroke-opacity", 0.6)
-        .attr("stroke-width", 1.5);
-
-    // Nodes
-    const node = rootGroup.append("g")
-        .selectAll("g")
-        .data(data.nodes)
-        .join("g")
-        .style("cursor", "pointer")
-        .on("click", (e, d) => {
-            // Remove active state from all, add to clicked
-            node.select("circle.node-core").classed("nexus-node-active", false);
-            d3.select(e.currentTarget).select("circle.node-core").classed("nexus-node-active", true);
-            dotNetHelper.invokeMethodAsync('OnNodeClicked', d.id);
-        })
-        .call(drag(simulation));
-
-    // Outer glow for nodes
-    node.append("circle")
-        .attr("r", 14)
-        .attr("fill", "url(#nebulaGlow)")
-        .attr("opacity", 0.4);
-
-    // Core circle
-    node.append("circle")
-        .attr("class", "node-core")
-        .attr("r", 6)
-        .attr("fill", "#888")
-        .attr("stroke", "#222")
-        .attr("stroke-width", 2);
-
-    // Labels
-    node.append("text")
-        .text(d => d.label)
-        .attr("x", 12)
-        .attr("y", 4)
-        .attr("fill", "#ccc")
-        .attr("font-family", "var(--nexus-font-sans)")
-        .attr("font-size", "0.75rem");
-
-    simulation.on("tick", () => {
-        link
-            .attr("x1", d => d.source.x)
-            .attr("y1", d => d.source.y)
-            .attr("x2", d => d.target.x)
-            .attr("y2", d => d.target.y);
-
-        node.attr("transform", d => `translate(${d.x},${d.y})`);
-    });
-}
-
-function drag(simulation) {
-    function dragstarted(event) {
-        if (!event.active) simulation.alphaTarget(0.3).restart();
-        event.subject.fx = event.subject.x;
-        event.subject.fy = event.subject.y;
-    }
-    function dragged(event) {
-        event.subject.fx = event.x;
-        event.subject.fy = event.y;
-    }
-    function dragended(event) {
-        if (!event.active) simulation.alphaTarget(0);
-        event.subject.fx = null;
-        event.subject.fy = null;
-    }
-    return d3.drag()
-        .on("start", dragstarted)
-        .on("drag", dragged)
-        .on("end", dragended);
-}
-
-export function unmount(containerId) {
-    if (simulation) {
-        simulation.stop();
-    }
-    const container = document.getElementById(containerId);
-    if (container) {
-        container.innerHTML = ''; // clear svg
-    }
-}
-
-export function scrollToNode(id) {
-    const el = document.getElementById(id);
-    if (el) {
-        el.scrollIntoView({ behavior: 'smooth', block: 'center' });
-    }
-}
-
-export function pause() {
-    if (simulation) {
-        simulation.stop();
-    }
-}
-
-export function resume() {
-    if (simulation) {
-        // give it a gentle kick to settle if moved
-        simulation.alphaTarget(0.1).restart();
-    }
-}

ejajBook/src/NexusReader.Web.New/Components/App.razor

@@ -1,21 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-
-<head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <base href="/" />
-    <ResourcePreloader />
-    <link rel="stylesheet" href="@Assets["app.css"]" />
-    <link rel="stylesheet" href="@Assets["NexusReader.Web.styles.css"]" />
-    <ImportMap />
-    <HeadOutlet @rendermode="InteractiveAuto" />
-</head>
-
-<body>
-    <Routes @rendermode="InteractiveAuto" />
-    <ReconnectModal />
-    <script src="@Assets["_framework/blazor.web.js"]"></script>
-</body>
-
-</html>

ejajBook/src/NexusReader.Web.New/Components/Pages/Error.razor

@@ -1,36 +0,0 @@
-@page "/Error"
-@using System.Diagnostics
-
-<PageTitle>Error</PageTitle>
-
-<h1 class="text-danger">Error.</h1>
-<h2 class="text-danger">An error occurred while processing your request.</h2>
-
-@if (ShowRequestId)
-{
-    <p>
-        <strong>Request ID:</strong> <code>@RequestId</code>
-    </p>
-}
-
-<h3>Development Mode</h3>
-<p>
-    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
-</p>
-<p>
-    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
-    It can result in displaying sensitive information from exceptions to end users.
-    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
-    and restarting the app.
-</p>
-
-@code{
-    [CascadingParameter]
-    private HttpContext? HttpContext { get; set; }
-
-    private string? RequestId { get; set; }
-    private bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
-
-    protected override void OnInitialized() =>
-        RequestId = Activity.Current?.Id ?? HttpContext?.TraceIdentifier;
-}

ejajBook/src/NexusReader.Web.New/Components/_Imports.razor

@@ -1,13 +0,0 @@
-@using System.Net.Http
-@using System.Net.Http.Json
-@using Microsoft.AspNetCore.Components.Forms
-@using Microsoft.AspNetCore.Components.Routing
-@using Microsoft.AspNetCore.Components.Web
-@using static Microsoft.AspNetCore.Components.Web.RenderMode
-@using Microsoft.AspNetCore.Components.Web.Virtualization
-@using Microsoft.JSInterop
-@using NexusReader.Web
-@using NexusReader.Web.Client
-@using NexusReader.Web.Client.Layout
-@using NexusReader.Web.Components
-@using NexusReader.Web.Client.Components.Atoms

ejajBook/src/NexusReader.Web.New/NexusReader.Web.csproj

@@ -1,20 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-  <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
-    <Nullable>enable</Nullable>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <BlazorDisableThrowNavigationException>true</BlazorDisableThrowNavigationException>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\NexusReader.Web.Client\NexusReader.Web.Client.csproj" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="10.0.6" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\NexusReader.Application\NexusReader.Application.csproj" />
-    <ProjectReference Include="..\NexusReader.Infrastructure\NexusReader.Infrastructure.csproj" />
-  </ItemGroup>
-
-</Project>

ejajBook/src/NexusReader.Web.New/Program.cs

@@ -1,50 +0,0 @@
-using NexusReader.Web.Components;
-using NexusReader.Application;
-using NexusReader.Infrastructure;
-using NexusReader.Application.Abstractions.Services;
-using NexusReader.Web.Client.Services;
-
-var builder = WebApplication.CreateBuilder(args);
-
-// Add services to the container.
-builder.Services.AddRazorComponents()
-    .AddInteractiveServerComponents()
-    .AddInteractiveWebAssemblyComponents();
-
-builder.Services.AddScoped<IPlatformService, WebPlatformService>();
-builder.Services.AddScoped<IThemeService, ThemeService>();
-builder.Services.AddScoped<IQuizStateService, QuizStateService>();
-builder.Services.AddScoped<IFocusModeService, FocusModeService>();
-
-builder.Services.AddApplication();
-builder.Services.AddInfrastructure();
-
-var app = builder.Build();
-
-// Configure the HTTP request pipeline.
-if (app.Environment.IsDevelopment())
-{
-    app.UseWebAssemblyDebugging();
-}
-else
-{
-    app.UseExceptionHandler("/Error", createScopeForErrors: true);
-    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
-    app.UseHsts();
-}
-app.UseStatusCodePagesWithReExecute("/not-found", createScopeForStatusCodePages: true);
-if (!app.Environment.IsDevelopment())
-{
-    app.UseHttpsRedirection();
-}
-
-app.UseStaticFiles();
-app.UseAntiforgery();
-
-app.MapStaticAssets();
-app.MapRazorComponents<App>()
-    .AddInteractiveServerRenderMode()
-    .AddInteractiveWebAssemblyRenderMode()
-    .AddAdditionalAssemblies(typeof(NexusReader.Web.Client._Imports).Assembly);
-
-app.Run();

ejajBook/src/NexusReader.Web.New/Properties/launchSettings.json

@@ -1,25 +0,0 @@
-{
-  "$schema": "https://json.schemastore.org/launchsettings.json",
-    "profiles": {
-      "http": {
-        "commandName": "Project",
-        "dotnetRunMessages": true,
-        "launchBrowser": true,
-        "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
-        "applicationUrl": "http://localhost:5104",
-        "environmentVariables": {
-          "ASPNETCORE_ENVIRONMENT": "Development"
-        }
-      },
-      "https": {
-        "commandName": "Project",
-        "dotnetRunMessages": true,
-        "launchBrowser": true,
-        "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
-        "applicationUrl": "https://localhost:7131;http://localhost:5104",
-        "environmentVariables": {
-          "ASPNETCORE_ENVIRONMENT": "Development"
-        }
-      }
-    }
-  }

ejajBook/src/NexusReader.Web.New/appsettings.Development.json

@@ -1,8 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  }
-}

ejajBook/src/NexusReader.Web.New/appsettings.json

@@ -1,9 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  },
-  "AllowedHosts": "*"
-}

ejajBook/src/NexusReader.Web.New/wwwroot/app.css

@@ -1,70 +0,0 @@
-@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Merriweather:ital,wght@0,300;0,400;0,700;1,400&display=swap');
-
-:root {
-    --nexus-neon: #00ff99;
-    --nexus-bg: #121212;
-    --nexus-card: #1e1e1e;
-    --nexus-text: #ffffff;
-    --nexus-font-sans: 'Inter', sans-serif;
-    --nexus-font-serif: 'Merriweather', serif;
-}
-
-.reader-canvas.theme-light {
-    --nexus-bg: #F5F5F5;
-    --nexus-card: #FFFFFF;
-    --nexus-text: #1A1A1A;
-}
-
-body {
-    background-color: var(--nexus-bg);
-    color: var(--nexus-text);
-    font-family: var(--nexus-font-sans);
-    margin: 0;
-    padding: 0;
-    transition: background-color 0.4s ease, color 0.4s ease;
-}
-
-.reader-canvas.theme-light {
-    background-color: var(--nexus-bg);
-    color: var(--nexus-text);
-    transition: background-color 0.4s ease, color 0.4s ease;
-}
-
-h1:focus {
-    outline: none;
-}
-
-.valid.modified:not([type=checkbox]) {
-    outline: 1px solid #26b050;
-}
-
-.invalid {
-    outline: 1px solid #e50000;
-}
-
-.validation-message {
-    color: #e50000;
-}
-
-.blazor-error-boundary {
-    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
-    padding: 1rem 1rem 1rem 3.7rem;
-    color: white;
-}
-
-    .blazor-error-boundary::after {
-        content: "An error has occurred."
-    }
-
-.darker-border-checkbox.form-check-input {
-    border-color: #929292;
-}
-
-.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
-    color: var(--bs-secondary-color);
-    text-align: end;
-}
-
-.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
-    text-align: start;
-}

src/NexusReader.Application/Abstractions/Services/INativeStorageService.cs

@@ -9,4 +9,8 @@ public interface INativeStorageService
     Result SaveBool(string key, bool value);
     Result<bool> GetBool(string key, bool defaultValue = false);
     Result Remove(string key);
+    
+    Task<Result> SaveSecureString(string key, string value);
+    Task<Result<string?>> GetSecureString(string key);
+    Result RemoveSecure(string key);
 }

src/NexusReader.Application/NexusReader.Application.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <ItemGroup>
     <ProjectReference Include="..\NexusReader.Domain\NexusReader.Domain.csproj" />
@@ -9,6 +9,8 @@
     <PackageReference Include="Mapster" Version="10.0.7" />
     <PackageReference Include="Mapster.DependencyInjection" Version="10.0.7" />
     <PackageReference Include="MediatR" Version="12.1.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Authorization" Version="10.0.7" />
+    <PackageReference Include="Microsoft.Extensions.Identity.Core" Version="10.0.7" />
   </ItemGroup>
 
   <PropertyGroup>

src/NexusReader.Application/Security/Authorization/ProUserHandler.cs

@@ -0,0 +1,47 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using NexusReader.Domain.Entities;
+
+namespace NexusReader.Application.Security.Authorization;
+
+public class ProUserHandler : AuthorizationHandler<ProUserRequirement>
+{
+    private readonly UserManager<NexusUser> _userManager;
+
+    public ProUserHandler(UserManager<NexusUser> userManager)
+    {
+        _userManager = userManager;
+    }
+
+    protected override async Task HandleRequirementAsync(
+        AuthorizationHandlerContext context,
+        ProUserRequirement requirement)
+    {
+        var userId = context.User.FindFirstValue(ClaimTypes.NameIdentifier);
+        if (string.IsNullOrEmpty(userId))
+        {
+            return;
+        }
+
+        var user = await _userManager.FindByIdAsync(userId);
+        if (user == null)
+        {
+            return;
+        }
+
+        // Rule 1: Explicit Pro plan
+        if (user.CurrentPlan == "Pro")
+        {
+            context.Succeed(requirement);
+            return;
+        }
+
+        // Rule 2: Within Token Limits (SaaS logic)
+        if (user.AITokensUsed < user.AITokenLimit)
+        {
+            context.Succeed(requirement);
+            return;
+        }
+    }
+}

src/NexusReader.Application/Security/Authorization/ProUserRequirement.cs

@@ -0,0 +1,10 @@
+using Microsoft.AspNetCore.Authorization;
+
+namespace NexusReader.Application.Security.Authorization;
+
+/// <summary>
+/// Requirement for users with active "Pro" subscriptions or sufficient AI tokens.
+/// </summary>
+public class ProUserRequirement : IAuthorizationRequirement
+{
+}

src/NexusReader.Domain/Entities/Ebook.cs

@@ -0,0 +1,36 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace NexusReader.Domain.Entities;
+
+/// <summary>
+/// Represents an E-book uploaded or owned by a user.
+/// </summary>
+public class Ebook
+{
+    [Key]
+    public Guid Id { get; set; } = Guid.NewGuid();
+
+    [Required]
+    [MaxLength(255)]
+    public string Title { get; set; } = string.Empty;
+
+    [MaxLength(255)]
+    public string Author { get; set; } = "Unknown";
+
+    [Required]
+    public string FilePath { get; set; } = string.Empty;
+
+    public string? CoverUrl { get; set; }
+
+    public DateTime AddedDate { get; set; } = DateTime.UtcNow;
+
+    public DateTime? LastReadDate { get; set; }
+
+    // Relationship to NexusUser
+    [Required]
+    public string UserId { get; set; } = string.Empty;
+
+    [ForeignKey(nameof(UserId))]
+    public NexusUser? User { get; set; }
+}

src/NexusReader.Domain/Entities/NexusUser.cs

@@ -0,0 +1,34 @@
+using Microsoft.AspNetCore.Identity;
+
+namespace NexusReader.Domain.Entities;
+
+/// <summary>
+/// Extended Identity user for the Nexus AI E-Reader SaaS platform.
+/// </summary>
+public class NexusUser : IdentityUser
+{
+    /// <summary>
+    /// Total number of AI tokens allowed for the current billing period.
+    /// </summary>
+    public int AITokenLimit { get; set; }
+
+    /// <summary>
+    /// Number of AI tokens consumed in the current billing period.
+    /// </summary>
+    public int AITokensUsed { get; set; }
+
+    /// <summary>
+    /// Unique identifier for the tenant (SaaS multi-tenancy support).
+    /// </summary>
+    public Guid TenantId { get; set; }
+
+    /// <summary>
+    /// Current subscription plan (e.g., "Free", "Pro", "Enterprise").
+    /// </summary>
+    public string CurrentPlan { get; set; } = "Free";
+
+    /// <summary>
+    /// Collection of e-books owned by the user.
+    /// </summary>
+    public ICollection<Ebook> Ebooks { get; set; } = new List<Ebook>();
+}

src/NexusReader.Domain/NexusReader.Domain.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
@@ -6,4 +6,8 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Identity.Stores" Version="10.0.7" />
+  </ItemGroup>
+
 </Project>

src/NexusReader.Infrastructure.Mobile/Services/MauiStorageService.cs

@@ -68,4 +68,42 @@ public sealed class MauiStorageService : INativeStorageService
             return Result.Fail(ex.Message);
         }
     }
+
+    public async Task<Result> SaveSecureString(string key, string value)
+    {
+        try
+        {
+            await SecureStorage.Default.SetAsync(key, value);
+            return Result.Ok();
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(ex.Message);
+        }
+    }
+
+    public async Task<Result<string?>> GetSecureString(string key)
+    {
+        try
+        {
+            return Result.Ok(await SecureStorage.Default.GetAsync(key));
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(ex.Message);
+        }
+    }
+
+    public Result RemoveSecure(string key)
+    {
+        try
+        {
+            SecureStorage.Default.Remove(key);
+            return Result.Ok();
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(ex.Message);
+        }
+    }
 }

src/NexusReader.Infrastructure/DependencyInjection.cs

@@ -10,6 +10,10 @@ using NexusReader.Infrastructure.Services;
 using NexusReader.Infrastructure.Configuration;
 using Polly;
 using Polly.Retry;
+using NexusReader.Domain.Entities;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Authorization;
+using NexusReader.Application.Security.Authorization;
 
 namespace NexusReader.Infrastructure;
 
@@ -53,6 +57,14 @@ public static class DependencyInjection
         services.AddScoped<IKnowledgeService, KnowledgeService>();
         services.AddTransient<IAiGenerateQuizService, FakeAiGenerateQuizService>();
         services.AddTransient<IEpubService, EpubService>();
+
+        services.AddAuthorizationCore(options =>
+        {
+            options.AddPolicy("ProUser", policy => policy.Requirements.Add(new ProUserRequirement()));
+        });
+
+        services.AddScoped<IAuthorizationHandler, ProUserHandler>();
+
         return services;
     }
 }

src/NexusReader.Infrastructure/Identity/TokenLimitHandler.cs

@@ -0,0 +1,45 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using NexusReader.Domain.Entities;
+using NexusReader.Infrastructure.Persistence;
+
+namespace NexusReader.Infrastructure.Identity;
+
+/// <summary>
+/// Handler that validates if the user has available AI tokens.
+/// </summary>
+public class TokenLimitHandler : AuthorizationHandler<TokenLimitRequirement>
+{
+    private readonly AppDbContext _dbContext;
+    private readonly UserManager<NexusUser> _userManager;
+
+    public TokenLimitHandler(AppDbContext dbContext, UserManager<NexusUser> userManager)
+    {
+        _dbContext = dbContext;
+        _userManager = userManager;
+    }
+
+    protected override async Task HandleRequirementAsync(
+        AuthorizationHandlerContext context,
+        TokenLimitRequirement requirement)
+    {
+        var userId = context.User.FindFirstValue(ClaimTypes.NameIdentifier);
+        if (userId == null)
+        {
+            return;
+        }
+
+        var user = await _userManager.FindByIdAsync(userId);
+        if (user == null)
+        {
+            return;
+        }
+
+        // Check if user has available tokens
+        if (user.AITokensUsed < user.AITokenLimit)
+        {
+            context.Succeed(requirement);
+        }
+    }
+}

src/NexusReader.Infrastructure/Identity/TokenLimitRequirement.cs

@@ -0,0 +1,10 @@
+using Microsoft.AspNetCore.Authorization;
+
+namespace NexusReader.Infrastructure.Identity;
+
+/// <summary>
+/// Requirement to check if a user has not exceeded their AI token limit.
+/// </summary>
+public class TokenLimitRequirement : IAuthorizationRequirement
+{
+}

src/NexusReader.Infrastructure/Migrations/20260428142027_InitialIdentityAndEbooks.Designer.cs

@@ -0,0 +1,368 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using NexusReader.Infrastructure.Persistence;
+
+#nullable disable
+
+namespace NexusReader.Infrastructure.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260428142027_InitialIdentityAndEbooks")]
+    partial class InitialIdentityAndEbooks
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "10.0.7");
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRole", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256)
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256)
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasDatabaseName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("RoleId")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("UserId")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ProviderKey")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ProviderDisplayName")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("UserId")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.Property<string>("UserId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("RoleId")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.Property<string>("UserId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Value")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens", (string)null);
+                });
+
+            modelBuilder.Entity("NexusReader.Domain.Entities.Ebook", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("AddedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Author")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("CoverUrl")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("FilePath")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime?>("LastReadDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("UserId")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Ebooks");
+                });
+
+            modelBuilder.Entity("NexusReader.Domain.Entities.NexusUser", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("AITokenLimit")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AITokensUsed")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AccessFailedCount")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("CurrentPlan")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256)
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("EmailConfirmed")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("LockoutEnabled")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256)
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("PasswordHash")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("PhoneNumberConfirmed")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("SecurityStamp")
+                        .HasColumnType("TEXT");
+
+                    b.Property<Guid>("TenantId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("TwoFactorEnabled")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasDatabaseName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasDatabaseName("UserNameIndex");
+
+                    b.ToTable("AspNetUsers", (string)null);
+                });
+
+            modelBuilder.Entity("NexusReader.Domain.Entities.SemanticKnowledgeCache", b =>
+                {
+                    b.Property<string>("ContentHash")
+                        .HasMaxLength(64)
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("JsonData")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModelId")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("PromptVersion")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("ContentHash");
+
+                    b.HasIndex("ContentHash")
+                        .IsUnique();
+
+                    b.ToTable("SemanticKnowledgeCache");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.HasOne("NexusReader.Domain.Entities.NexusUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.HasOne("NexusReader.Domain.Entities.NexusUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("NexusReader.Domain.Entities.NexusUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.HasOne("NexusReader.Domain.Entities.NexusUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("NexusReader.Domain.Entities.Ebook", b =>
+                {
+                    b.HasOne("NexusReader.Domain.Entities.NexusUser", "User")
+                        .WithMany("Ebooks")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("NexusReader.Domain.Entities.NexusUser", b =>
+                {
+                    b.Navigation("Ebooks");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

src/NexusReader.Infrastructure/Migrations/20260428142027_InitialIdentityAndEbooks.cs

@@ -0,0 +1,282 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NexusReader.Infrastructure.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitialIdentityAndEbooks : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "AspNetRoles",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "TEXT", nullable: false),
+                    Name = table.Column<string>(type: "TEXT", maxLength: 256, nullable: true),
+                    NormalizedName = table.Column<string>(type: "TEXT", maxLength: 256, nullable: true),
+                    ConcurrencyStamp = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AspNetRoles", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AspNetUsers",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "TEXT", nullable: false),
+                    AITokenLimit = table.Column<int>(type: "INTEGER", nullable: false),
+                    AITokensUsed = table.Column<int>(type: "INTEGER", nullable: false),
+                    TenantId = table.Column<Guid>(type: "TEXT", nullable: false),
+                    CurrentPlan = table.Column<string>(type: "TEXT", nullable: false),
+                    UserName = table.Column<string>(type: "TEXT", maxLength: 256, nullable: true),
+                    NormalizedUserName = table.Column<string>(type: "TEXT", maxLength: 256, nullable: true),
+                    Email = table.Column<string>(type: "TEXT", maxLength: 256, nullable: true),
+                    NormalizedEmail = table.Column<string>(type: "TEXT", maxLength: 256, nullable: true),
+                    EmailConfirmed = table.Column<bool>(type: "INTEGER", nullable: false),
+                    PasswordHash = table.Column<string>(type: "TEXT", nullable: true),
+                    SecurityStamp = table.Column<string>(type: "TEXT", nullable: true),
+                    ConcurrencyStamp = table.Column<string>(type: "TEXT", nullable: true),
+                    PhoneNumber = table.Column<string>(type: "TEXT", nullable: true),
+                    PhoneNumberConfirmed = table.Column<bool>(type: "INTEGER", nullable: false),
+                    TwoFactorEnabled = table.Column<bool>(type: "INTEGER", nullable: false),
+                    LockoutEnd = table.Column<DateTimeOffset>(type: "TEXT", nullable: true),
+                    LockoutEnabled = table.Column<bool>(type: "INTEGER", nullable: false),
+                    AccessFailedCount = table.Column<int>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AspNetUsers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "SemanticKnowledgeCache",
+                columns: table => new
+                {
+                    ContentHash = table.Column<string>(type: "TEXT", maxLength: 64, nullable: false),
+                    JsonData = table.Column<string>(type: "TEXT", nullable: false),
+                    ModelId = table.Column<string>(type: "TEXT", maxLength: 50, nullable: false),
+                    PromptVersion = table.Column<string>(type: "TEXT", maxLength: 10, nullable: false),
+                    CreatedAt = table.Column<DateTime>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SemanticKnowledgeCache", x => x.ContentHash);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AspNetRoleClaims",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    RoleId = table.Column<string>(type: "TEXT", nullable: false),
+                    ClaimType = table.Column<string>(type: "TEXT", nullable: true),
+                    ClaimValue = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AspNetRoleClaims", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_AspNetRoleClaims_AspNetRoles_RoleId",
+                        column: x => x.RoleId,
+                        principalTable: "AspNetRoles",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AspNetUserClaims",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    UserId = table.Column<string>(type: "TEXT", nullable: false),
+                    ClaimType = table.Column<string>(type: "TEXT", nullable: true),
+                    ClaimValue = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AspNetUserClaims", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_AspNetUserClaims_AspNetUsers_UserId",
+                        column: x => x.UserId,
+                        principalTable: "AspNetUsers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AspNetUserLogins",
+                columns: table => new
+                {
+                    LoginProvider = table.Column<string>(type: "TEXT", nullable: false),
+                    ProviderKey = table.Column<string>(type: "TEXT", nullable: false),
+                    ProviderDisplayName = table.Column<string>(type: "TEXT", nullable: true),
+                    UserId = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AspNetUserLogins", x => new { x.LoginProvider, x.ProviderKey });
+                    table.ForeignKey(
+                        name: "FK_AspNetUserLogins_AspNetUsers_UserId",
+                        column: x => x.UserId,
+                        principalTable: "AspNetUsers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AspNetUserRoles",
+                columns: table => new
+                {
+                    UserId = table.Column<string>(type: "TEXT", nullable: false),
+                    RoleId = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AspNetUserRoles", x => new { x.UserId, x.RoleId });
+                    table.ForeignKey(
+                        name: "FK_AspNetUserRoles_AspNetRoles_RoleId",
+                        column: x => x.RoleId,
+                        principalTable: "AspNetRoles",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_AspNetUserRoles_AspNetUsers_UserId",
+                        column: x => x.UserId,
+                        principalTable: "AspNetUsers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AspNetUserTokens",
+                columns: table => new
+                {
+                    UserId = table.Column<string>(type: "TEXT", nullable: false),
+                    LoginProvider = table.Column<string>(type: "TEXT", nullable: false),
+                    Name = table.Column<string>(type: "TEXT", nullable: false),
+                    Value = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AspNetUserTokens", x => new { x.UserId, x.LoginProvider, x.Name });
+                    table.ForeignKey(
+                        name: "FK_AspNetUserTokens_AspNetUsers_UserId",
+                        column: x => x.UserId,
+                        principalTable: "AspNetUsers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Ebooks",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "TEXT", nullable: false),
+                    Title = table.Column<string>(type: "TEXT", maxLength: 255, nullable: false),
+                    Author = table.Column<string>(type: "TEXT", maxLength: 255, nullable: false),
+                    FilePath = table.Column<string>(type: "TEXT", nullable: false),
+                    CoverUrl = table.Column<string>(type: "TEXT", nullable: true),
+                    AddedDate = table.Column<DateTime>(type: "TEXT", nullable: false),
+                    LastReadDate = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    UserId = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Ebooks", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Ebooks_AspNetUsers_UserId",
+                        column: x => x.UserId,
+                        principalTable: "AspNetUsers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AspNetRoleClaims_RoleId",
+                table: "AspNetRoleClaims",
+                column: "RoleId");
+
+            migrationBuilder.CreateIndex(
+                name: "RoleNameIndex",
+                table: "AspNetRoles",
+                column: "NormalizedName",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AspNetUserClaims_UserId",
+                table: "AspNetUserClaims",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AspNetUserLogins_UserId",
+                table: "AspNetUserLogins",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AspNetUserRoles_RoleId",
+                table: "AspNetUserRoles",
+                column: "RoleId");
+
+            migrationBuilder.CreateIndex(
+                name: "EmailIndex",
+                table: "AspNetUsers",
+                column: "NormalizedEmail");
+
+            migrationBuilder.CreateIndex(
+                name: "UserNameIndex",
+                table: "AspNetUsers",
+                column: "NormalizedUserName",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Ebooks_UserId",
+                table: "Ebooks",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SemanticKnowledgeCache_ContentHash",
+                table: "SemanticKnowledgeCache",
+                column: "ContentHash",
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "AspNetRoleClaims");
+
+            migrationBuilder.DropTable(
+                name: "AspNetUserClaims");
+
+            migrationBuilder.DropTable(
+                name: "AspNetUserLogins");
+
+            migrationBuilder.DropTable(
+                name: "AspNetUserRoles");
+
+            migrationBuilder.DropTable(
+                name: "AspNetUserTokens");
+
+            migrationBuilder.DropTable(
+                name: "Ebooks");
+
+            migrationBuilder.DropTable(
+                name: "SemanticKnowledgeCache");
+
+            migrationBuilder.DropTable(
+                name: "AspNetRoles");
+
+            migrationBuilder.DropTable(
+                name: "AspNetUsers");
+        }
+    }
+}