feat: add Kreator link to the sidebar navigation menu

Directory.Packages.props

@@ -5,7 +5,6 @@
   <ItemGroup>
     <PackageVersion Include="FluentResults" Version="4.0.0" />
     <PackageVersion Include="HtmlSanitizer" Version="9.0.892" />
-    <PackageVersion Include="Markdig" Version="0.38.0" />
     <PackageVersion Include="Mapster" Version="10.0.7" />
     <PackageVersion Include="Mapster.DependencyInjection" Version="10.0.7" />
     <PackageVersion Include="MediatR" Version="12.1.1" />

Dockerfile

@@ -26,7 +26,6 @@ RUN dotnet publish "NexusReader.Web.csproj" -c Release -o /app/publish /p:UseApp
 
 # Stage 2: Runtime
 FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS final
-RUN apt-get update && apt-get install -y --no-install-recommends libgssapi-krb5-2 && rm -rf /var/lib/apt/lists/*
 WORKDIR /app
 COPY --from=build /app/publish .
 

GEMINI.md

@@ -46,9 +46,4 @@ version: 1.0
 
 > [!IMPORTANT]
 > **Git Workflow & Integration**
-> All tasks originating from the repository must be performed on a separate branch. Every new chat must be launched from the `develop` branch. To connect to the Git repository, use the `gitea` MCP server.
-
-> [!IMPORTANT]
-> **Docker Lifecycle Management**
-> Before starting work, only the web (nexus) container needs to be stopped to prevent port/application conflicts (e.g., `./run-stage.sh --stop --nexus-only` or `-s -n`); database containers (PostgreSQL, Neo4j, Qdrant) should continue to run to support local development/debugging. After finishing work, a new version of the web container from the current branch should be rebuilt and restarted via `./run-stage.sh --nexus-only` (or `-n`).
-
+> All tasks originating from the repository must be performed on a separate branch. To connect to the Git repository, use the `gitea` MCP server.

docker-compose.stage.yml

@@ -30,7 +30,6 @@ services:
       - ASPNETCORE_ENVIRONMENT=Staging
       - ConnectionStrings__PostgresConnection=Host=db;Database=${POSTGRES_DB:-nexus_stage_db};Username=${POSTGRES_USER:-nexus_user_stage};Password=${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required}
       - ConnectionStrings__QdrantConnection=http://qdrant:6334
-      - Qdrant__ApiKey=${QDRANT_API_KEY:-}
       - ConnectionStrings__Neo4jConnection=bolt://neo4j:7687
       - Neo4j__Username=${NEO4J_USERNAME:-neo4j}
       - Neo4j__Password=${NEO4J_PASSWORD:?NEO4J_PASSWORD is required}

run-stage.sh

@@ -1,154 +0,0 @@
-#!/usr/bin/env bash
-# -------------------------------------------------------------
-# Staging Deploy & Orchestration Helper for NexusReader
-# -------------------------------------------------------------
-set -e
-
-NEXUS_ONLY=false
-STOP=false
-for arg in "$@"; do
-    case $arg in
-        --nexus-only|-n)
-            NEXUS_ONLY=true
-            ;;
-        --stop|-s)
-            STOP=true
-            ;;
-    esac
-done
-
-ENV_FILE=".env.stage"
-TEMPLATE_FILE=".env.stage.template"
-COMPOSE_FILE="docker-compose.stage.yml"
-
-if [ "$STOP" = true ]; then
-    echo "🛑 Stopping staging environment..."
-    if [ ! -f "$ENV_FILE" ] && [ -f "$TEMPLATE_FILE" ]; then
-        cp "$TEMPLATE_FILE" "$ENV_FILE"
-    fi
-    if [ "$NEXUS_ONLY" = true ]; then
-        echo "🧹 Stopping and removing only the web (nexus) container..."
-        docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" stop web || true
-        docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" rm -f web || true
-    else
-        echo "🧹 Stopping all containers..."
-        docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" down --remove-orphans || true
-        docker compose down --remove-orphans 2>/dev/null || true
-    fi
-    echo "✅ Staging environment stopped."
-    exit 0
-fi
-
-echo "🏁 Starting staging environment orchestration..."
-if [ "$NEXUS_ONLY" = true ]; then
-    echo "ℹ️ Mode: --nexus-only (only the web/nexus application container will be modified)"
-fi
-
-# 1. Create .env.stage if it doesn't exist
-if [ ! -f "$ENV_FILE" ]; then
-    if [ -f "$TEMPLATE_FILE" ]; then
-        echo "📄 Creating $ENV_FILE from $TEMPLATE_FILE..."
-        cp "$TEMPLATE_FILE" "$ENV_FILE"
-    else
-        echo "❌ Error: Template file $TEMPLATE_FILE not found."
-        exit 1
-    fi
-fi
-
-# 2. Check and generate secure random passwords for placeholders
-if grep -q "CHANGE_ME_TO_STRONG_PASSWORD" "$ENV_FILE"; then
-    echo "🔐 Generating secure random passwords in $ENV_FILE..."
-    PG_PASS=$(openssl rand -hex 16)
-    NEO_PASS=$(openssl rand -hex 16)
-    # Use standard sed compatible with Linux
-    sed -i "s/POSTGRES_PASSWORD=CHANGE_ME_TO_STRONG_PASSWORD/POSTGRES_PASSWORD=$PG_PASS/g" "$ENV_FILE"
-    sed -i "s/NEO4J_PASSWORD=CHANGE_ME_TO_STRONG_PASSWORD/NEO4J_PASSWORD=$NEO_PASS/g" "$ENV_FILE"
-fi
-
-if grep -q "CHANGE_ME_TO_SECURE_ADMIN_PASSWORD" "$ENV_FILE"; then
-    echo "🔐 Generating secure admin seed password in $ENV_FILE..."
-    ADMIN_PASS=$(openssl rand -hex 16)
-    sed -i "s/NEXUS_ADMIN_PASSWORD=CHANGE_ME_TO_SECURE_ADMIN_PASSWORD/NEXUS_ADMIN_PASSWORD=$ADMIN_PASS/g" "$ENV_FILE"
-fi
-
-if grep -q "^QDRANT_API_KEY=$" "$ENV_FILE" || grep -q "^QDRANT_API_KEY=[[:space:]]*$" "$ENV_FILE"; then
-    echo "🔐 Generating secure random Qdrant API key in $ENV_FILE..."
-    QD_KEY=$(openssl rand -hex 16)
-    sed -i "s/^QDRANT_API_KEY=.*/QDRANT_API_KEY=$QD_KEY/g" "$ENV_FILE"
-fi
-
-# Load staging variables for local execution context (needed for ports/migrations)
-# Clean up carriage returns just in case
-POSTGRES_USER=$(grep "^POSTGRES_USER=" "$ENV_FILE" | cut -d'=' -f2- | tr -d '\r')
-POSTGRES_PASSWORD=$(grep "^POSTGRES_PASSWORD=" "$ENV_FILE" | cut -d'=' -f2- | tr -d '\r')
-POSTGRES_DB=$(grep "^POSTGRES_DB=" "$ENV_FILE" | cut -d'=' -f2- | tr -d '\r')
-POSTGRES_PORT=$(grep "^POSTGRES_PORT=" "$ENV_FILE" | cut -d'=' -f2- | tr -d '\r')
-WEB_PORT=$(grep "^WEB_PORT=" "$ENV_FILE" | cut -d'=' -f2- | tr -d '\r')
-QDRANT_HTTP_PORT=$(grep "^QDRANT_HTTP_PORT=" "$ENV_FILE" | cut -d'=' -f2- | tr -d '\r')
-NEO4J_HTTP_PORT=$(grep "^NEO4J_HTTP_PORT=" "$ENV_FILE" | cut -d'=' -f2- | tr -d '\r')
-
-# Fallbacks in case env parsing is empty
-POSTGRES_PORT=${POSTGRES_PORT:-5438}
-WEB_PORT=${WEB_PORT:-5080}
-
-# 3. Stop any conflicting Docker Compose environments
-if [ "$NEXUS_ONLY" = true ]; then
-    echo "🧹 Stopping and removing only the web (nexus) container..."
-    docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" stop web || true
-    docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" rm -f web || true
-else
-    echo "🧹 Stopping existing containers..."
-    docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" down --remove-orphans || true
-    docker compose down --remove-orphans 2>/dev/null || true
-fi
-
-# 4. Build and start containers
-if [ "$NEXUS_ONLY" = true ]; then
-    echo "🚀 Building and restarting only the web (nexus) container..."
-    docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" up -d --build web
-else
-    echo "🚀 Building and starting staging containers..."
-    docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" up -d --build
-fi
-
-# 5. Wait for Database to be healthy
-echo "⏳ Waiting for database (nexus-db-stage) to become healthy..."
-MAX_ATTEMPTS=30
-attempt=0
-until [ "$(docker inspect --format='{{json .State.Health.Status}}' nexus-db-stage 2>/dev/null)" == "\"healthy\"" ]; do
-    sleep 2
-    attempt=$((attempt + 1))
-    if [ $attempt -ge $MAX_ATTEMPTS ]; then
-        echo "❌ Timeout: Database container never became healthy."
-        docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" logs db
-        exit 1
-    fi
-done
-echo "✅ Database is healthy!"
-
-# 6. Apply Entity Framework migrations
-echo "🔄 Applying EF Core migrations to staging database on port $POSTGRES_PORT..."
-export ConnectionStrings__PostgresConnection="Host=127.0.0.1;Port=$POSTGRES_PORT;Database=$POSTGRES_DB;Username=$POSTGRES_USER;Password=$POSTGRES_PASSWORD"
-dotnet ef database update --project src/NexusReader.Data --startup-project src/NexusReader.Web --no-build
-
-# 7. Wait for Web Application to respond
-echo "⏳ Waiting for Web Application to start on http://localhost:$WEB_PORT/health..."
-MAX_WEB_ATTEMPTS=30
-web_attempt=0
-until curl -s -f "http://localhost:$WEB_PORT/health" >/dev/null; do
-    sleep 2
-    web_attempt=$((web_attempt + 1))
-    if [ $web_attempt -ge $MAX_WEB_ATTEMPTS ]; then
-        echo "⚠️ Warning: Web app is not responding yet on http://localhost:$WEB_PORT/health, but let's check logs..."
-        docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" logs web
-        break
-    fi
-done
-
-echo "🎉 Staging environment is ready!"
-echo "--------------------------------------------------------"
-echo "🌐 Web Application: http://localhost:$WEB_PORT"
-echo "🗄️ PostgreSQL Port:  $POSTGRES_PORT"
-echo "🔎 Neo4j Console:   http://localhost:$NEO4J_HTTP_PORT"
-echo "📊 Qdrant Service:  http://localhost:$QDRANT_HTTP_PORT"
-echo "--------------------------------------------------------"

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

@@ -2,7 +2,6 @@ namespace NexusReader.Application.Abstractions.Services;
 
 /// <summary>
 /// Service for sanitizing raw input text (e.g. Markdown/HTML) to protect against XSS injection.
-/// Intended to have a Singleton lifetime.
 /// </summary>
 public interface ISanitizerService
 {

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

@@ -2,7 +2,6 @@ namespace NexusReader.Application.Abstractions.Services;
 
 /// <summary>
 /// General file storage service interface for handling media uploads.
-/// Intended to have a Scoped lifetime.
 /// </summary>
 public interface IStorageService
 {

src/NexusReader.Application/Common/AppJsonContext.cs

@@ -21,18 +21,6 @@ namespace NexusReader.Application.Common;
 [JsonSerializable(typeof(NexusReader.Application.DTOs.Media.ValidateChapterRequest))]
 [JsonSerializable(typeof(NexusReader.Application.DTOs.Media.ValidateChapterResponse))]
 [JsonSerializable(typeof(NexusReader.Application.DTOs.Media.UploadResultDto))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Media.LocalBackupEnvelope))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Media.AutosaveChapterRequest))]
-[JsonSerializable(typeof(NexusReader.Application.Features.Books.Commands.PublishBookVersionCommand))]
-[JsonSerializable(typeof(NexusReader.Application.Features.Books.Commands.CreateBookCommand))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Creator.CreateBookRequestDto))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Creator.CreateBookResponseDto))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Creator.CreatorDashboardDataDto))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Creator.DashboardMetricsDto))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Creator.CreatorBookDto))]
-[JsonSerializable(typeof(NexusReader.Application.DTOs.Creator.CreatorBookRevisionDto))]
-[JsonSerializable(typeof(List<NexusReader.Application.DTOs.Creator.CreatorBookDto>))]
-[JsonSerializable(typeof(List<NexusReader.Application.DTOs.Creator.CreatorBookRevisionDto>))]
 public partial class AppJsonContext : JsonSerializerContext
 {
 }

src/NexusReader.Application/DTOs/Creator/CreatorDtos.cs

@@ -1,61 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace NexusReader.Application.DTOs.Creator;
-
-/// <summary>
-/// Telemetry metrics for the Creator Dashboard.
-/// </summary>
-public record DashboardMetricsDto(
-    int TotalReads,
-    double AvgReadTimeMinutes,
-    int ActiveReaders,
-    decimal GrossRevenue
-);
-
-/// <summary>
-/// Lightweight revision details for the Creator Dashboard.
-/// </summary>
-public record CreatorBookRevisionDto(
-    Guid Id,
-    string VersionString,
-    bool IsPublished,
-    DateTime CreatedAt,
-    DateTime? PublishedAt
-);
-
-/// <summary>
-/// Lightweight book publication details for the Creator Dashboard.
-/// </summary>
-public record CreatorBookDto(
-    Guid Id,
-    string Title,
-    int WordCount,
-    int AggregatedReads,
-    Guid? FirstChapterId,
-    CreatorBookRevisionDto? LivePublishedRevision,
-    CreatorBookRevisionDto? CurrentDraftRevision
-);
-
-/// <summary>
-/// Root data envelope for Creator Dashboard loading.
-/// </summary>
-public record CreatorDashboardDataDto(
-    DashboardMetricsDto Metrics,
-    List<CreatorBookDto> Books
-);
-
-/// <summary>
-/// Request DTO for creating a new Book.
-/// </summary>
-public record CreateBookRequestDto(
-    string Title,
-    string? Description
-);
-
-/// <summary>
-/// Response DTO for creating a new Book.
-/// </summary>
-public record CreateBookResponseDto(
-    Guid BookId
-);

src/NexusReader.Application/DTOs/Media/MediaDtos.cs

@@ -1,7 +1,5 @@
 namespace NexusReader.Application.DTOs.Media;
 
-// Note: These DTOs are registered in AppJsonContext.cs for JSON source generation.
-
 /// <summary>
 /// Request DTO for chapter validation/sanitization.
 /// </summary>
@@ -16,18 +14,3 @@ public record ValidateChapterResponse(string SanitizedContent);
 /// Response DTO containing the uploaded media file URL.
 /// </summary>
 public record UploadResultDto(string Url);
-
-/// <summary>
-/// Represents a structured JSON backup envelope stored in LocalStorage.
-/// </summary>
-public class LocalBackupEnvelope
-{
-    public Guid ChapterId { get; set; }
-    public DateTime Timestamp { get; set; }
-    public string MarkdownContent { get; set; } = string.Empty;
-}
-
-/// <summary>
-/// Request DTO for chapter autosaving.
-/// </summary>
-public record AutosaveChapterRequest(string MarkdownContent);

src/NexusReader.Application/Features/Books/Commands/CreateBookCommand.cs

@@ -1,18 +0,0 @@
-using System;
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Features.Books.Commands;
-
-/// <summary>
-/// Command to create a new Book, initialize its first Working Draft revision, and seed it with a default Introduction chapter.
-/// </summary>
-/// <param name="Title">The title of the new book.</param>
-/// <param name="Description">An optional description of the book.</param>
-/// <param name="UserId">The ID of the creator user.</param>
-/// <param name="TenantId">The tenant ID for multi-tenant isolation.</param>
-public record CreateBookCommand(
-    string Title,
-    string? Description,
-    string UserId,
-    string TenantId
-) : ICommand<Guid>;

src/NexusReader.Application/Features/Books/Commands/CreateBookCommandHandler.cs

@@ -1,103 +0,0 @@
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-using FluentResults;
-using MediatR;
-using Microsoft.EntityFrameworkCore;
-using NexusReader.Application.Abstractions.Messaging;
-using NexusReader.Data.Persistence;
-using NexusReader.Domain.Entities;
-
-namespace NexusReader.Application.Features.Books.Commands;
-
-/// <summary>
-/// MediatR handler for creating a Book, creating its initial Working Draft revision,
-/// and seeding a default first chapter ("Introduction") in an atomic database transaction.
-/// </summary>
-public class CreateBookCommandHandler : ICommandHandler<CreateBookCommand, Guid>
-{
-    private readonly IDbContextFactory<AppDbContext> _dbContextFactory;
-
-    public CreateBookCommandHandler(IDbContextFactory<AppDbContext> dbContextFactory)
-    {
-        _dbContextFactory = dbContextFactory;
-    }
-
-    public async Task<Result<Guid>> Handle(CreateBookCommand request, CancellationToken cancellationToken)
-    {
-        if (string.IsNullOrWhiteSpace(request.Title))
-        {
-            return Result.Fail<Guid>(new Error("Book title is required."));
-        }
-
-        using var dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-        using var transaction = await dbContext.Database.BeginTransactionAsync(cancellationToken);
-
-        try
-        {
-            // 1. Instantiate the Book record mapping Title, UserId, and TenantId
-            var book = new Book
-            {
-                Id = Guid.NewGuid(),
-                Title = request.Title.Trim(),
-                UserId = request.UserId,
-                TenantId = request.TenantId,
-                CurrentDraftRevisionId = null,
-                LivePublishedRevisionId = null
-            };
-
-            dbContext.Books.Add(book);
-
-            // 2. Instantiate the initial BookRevision designated as "Working Draft"
-            var draftRevision = new BookRevision
-            {
-                Id = Guid.NewGuid(),
-                BookId = book.Id,
-                VersionString = "Working Draft",
-                IsPublished = false,
-                CreatedAt = DateTime.UtcNow
-            };
-
-            dbContext.BookRevisions.Add(draftRevision);
-
-            // 3. Automatically instantiate and append a default first Chapter to this new revision
-            var introChapter = new Chapter
-            {
-                Id = Guid.NewGuid(),
-                BookRevisionId = draftRevision.Id,
-                Title = "Introduction",
-                MarkdownContent = "# Introduction\nStart writing here...",
-                SortOrder = 1
-            };
-
-            dbContext.Chapters.Add(introChapter);
-
-            // Save first to generate DB references
-            await dbContext.SaveChangesAsync(cancellationToken);
-
-            // 4. Inject the newly instantiated draft revision ID back into Book.CurrentDraftRevisionId
-            book.CurrentDraftRevisionId = draftRevision.Id;
-
-            // Save the updated Book link
-            await dbContext.SaveChangesAsync(cancellationToken);
-
-            // Commit transaction
-            await transaction.CommitAsync(cancellationToken);
-
-            return Result.Ok(book.Id);
-        }
-        catch (Exception ex)
-        {
-            try
-            {
-                await transaction.RollbackAsync(cancellationToken);
-            }
-            catch (Exception rollbackEx)
-            {
-                Console.WriteLine($"[CreateBook] Transaction rollback failed: {rollbackEx.Message}");
-            }
-
-            return Result.Fail<Guid>(new Error($"Failed to create book: {ex.Message}").CausedBy(ex));
-        }
-    }
-}

src/NexusReader.Application/Features/Books/Commands/PublishBookVersionCommand.cs

@@ -1,12 +0,0 @@
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Application.Features.Books.Commands;
-
-/// <summary>
-/// Command to publish a new frozen version of a Book, and create a new Working Draft.
-/// </summary>
-/// <param name="BookId">The unique identifier of the Book to publish.</param>
-/// <param name="CustomVersionString">The custom version string to apply (e.g. "v1.0").</param>
-/// <param name="UserId">The ID of the user requesting the action.</param>
-/// <param name="TenantId">The tenant ID for multi-tenant isolation.</param>
-public record PublishBookVersionCommand(Guid BookId, string CustomVersionString, string UserId, string TenantId) : ICommand;

src/NexusReader.Application/Features/Books/Commands/PublishBookVersionCommandHandler.cs

@@ -1,112 +0,0 @@
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-using FluentResults;
-using MediatR;
-using Microsoft.EntityFrameworkCore;
-using NexusReader.Application.Abstractions.Messaging;
-using NexusReader.Data.Persistence;
-using NexusReader.Domain.Entities;
-using NexusReader.Domain.Exceptions;
-
-namespace NexusReader.Application.Features.Books.Commands;
-
-/// <summary>
-/// MediatR handler for publishing a Book version and setting up the next Working Draft.
-/// </summary>
-public class PublishBookVersionCommandHandler : ICommandHandler<PublishBookVersionCommand>
-{
-    private readonly IDbContextFactory<AppDbContext> _dbContextFactory;
-
-    public PublishBookVersionCommandHandler(IDbContextFactory<AppDbContext> dbContextFactory)
-    {
-        _dbContextFactory = dbContextFactory;
-    }
-
-    public async Task<Result> Handle(PublishBookVersionCommand request, CancellationToken cancellationToken)
-    {
-        using var dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-
-        // Fetch the Book including its CurrentDraftRevision and all associated Chapters,
-        // enforcing that the book belongs to the requested TenantId and UserId to prevent cross-tenant data leaks.
-        var book = await dbContext.Books
-            .Include(b => b.CurrentDraftRevision)
-                .ThenInclude(r => r!.Chapters)
-            .FirstOrDefaultAsync(
-                b => b.Id == request.BookId && b.UserId == request.UserId && b.TenantId == request.TenantId, 
-                cancellationToken);
-
-        if (book == null)
-        {
-            return Result.Fail(new Error($"Book with ID '{request.BookId}' was not found."));
-        }
-
-        var oldDraftRevision = book.CurrentDraftRevision;
-        if (oldDraftRevision == null)
-        {
-            return Result.Fail(new Error("The book does not have an active draft revision to publish."));
-        }
-
-        // Start ACID transaction
-        using var transaction = await dbContext.Database.BeginTransactionAsync(cancellationToken);
-        try
-        {
-            // 1. Update the current draft revision: Set IsPublished = true, PublishedAt = now, VersionString = custom
-            oldDraftRevision.IsPublished = true;
-            oldDraftRevision.PublishedAt = DateTime.UtcNow;
-            oldDraftRevision.VersionString = request.CustomVersionString;
-
-            // 2. Point the Book.LivePublishedRevisionId to this newly frozen revision ID
-            book.LivePublishedRevisionId = oldDraftRevision.Id;
-
-            // 3. Execute Deep Snapshot: Instantiate a brand new BookRevision representing the next "Working Draft"
-            var newDraftRevision = new BookRevision
-            {
-                Id = Guid.NewGuid(),
-                BookId = book.Id,
-                VersionString = "Working Draft",
-                IsPublished = false,
-                CreatedAt = DateTime.UtcNow
-            };
-
-            dbContext.BookRevisions.Add(newDraftRevision);
-
-            // Replicate/clone chapters into new Chapter objects associated with the new draft revision.
-            // Reset identities by explicitly instantiating completely new Chapter objects with Guid.NewGuid().
-            foreach (var oldChapter in oldDraftRevision.Chapters)
-            {
-                var newChapter = new Chapter
-                {
-                    Id = Guid.NewGuid(),
-                    BookRevisionId = newDraftRevision.Id,
-                    Title = oldChapter.Title,
-                    MarkdownContent = oldChapter.MarkdownContent,
-                    SortOrder = oldChapter.SortOrder
-                };
-                dbContext.Chapters.Add(newChapter);
-            }
-
-            // 4. Assign the new draft revision ID to Book.CurrentDraftRevisionId
-            book.CurrentDraftRevisionId = newDraftRevision.Id;
-
-            // Save changes and commit transaction
-            await dbContext.SaveChangesAsync(cancellationToken);
-            await transaction.CommitAsync(cancellationToken);
-
-            return Result.Ok();
-        }
-        catch (Exception ex)
-        {
-            try
-            {
-                await transaction.RollbackAsync(cancellationToken);
-            }
-            catch (Exception rollbackEx)
-            {
-                Console.WriteLine($"[PublishBookVersion] Transaction rollback failed: {rollbackEx.Message}");
-            }
-
-            return Result.Fail(new Error($"Failed to publish book version: {ex.Message}").CausedBy(ex));
-        }
-    }
-}

src/NexusReader.Application/Queries/Creator/GetBookRevisionsQuery.cs

@@ -1,63 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.EntityFrameworkCore;
-using NexusReader.Application.Abstractions.Messaging;
-using NexusReader.Application.DTOs.Creator;
-using NexusReader.Data.Persistence;
-using NexusReader.Domain.Exceptions;
-
-namespace NexusReader.Application.Queries.Creator;
-
-/// <summary>
-/// Query to load all revisions for a specific Book, checking multi-tenant ownership boundaries.
-/// </summary>
-/// <param name="BookId">The unique identifier of the target Book.</param>
-/// <param name="UserId">The ID of the creator requesting revision data.</param>
-/// <param name="TenantId">The tenant ID for multi-tenant isolation.</param>
-public record GetBookRevisionsQuery(Guid BookId, string UserId, string TenantId) : IQuery<List<CreatorBookRevisionDto>>;
-
-/// <summary>
-/// Handler that lists past revisions of a Book, verifying ownership to prevent cross-tenant leakages.
-/// </summary>
-public class GetBookRevisionsQueryHandler : IQueryHandler<GetBookRevisionsQuery, List<CreatorBookRevisionDto>>
-{
-    private readonly IDbContextFactory<AppDbContext> _dbContextFactory;
-
-    public GetBookRevisionsQueryHandler(IDbContextFactory<AppDbContext> dbContextFactory)
-    {
-        _dbContextFactory = dbContextFactory;
-    }
-
-    public async Task<FluentResults.Result<List<CreatorBookRevisionDto>>> Handle(GetBookRevisionsQuery request, CancellationToken cancellationToken)
-    {
-        using var dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-
-        // Verify the book exists and belongs to this tenant/user to prevent cross-tenant data leaks
-        var bookExists = await dbContext.Books
-            .AnyAsync(b => b.Id == request.BookId && b.UserId == request.UserId && b.TenantId == request.TenantId, cancellationToken);
-
-        if (!bookExists)
-        {
-            return FluentResults.Result.Fail<List<CreatorBookRevisionDto>>(new FluentResults.Error($"Book with ID '{request.BookId}' was not found."));
-        }
-
-        // Fetch all revisions sorted chronologically
-        var revisions = await dbContext.BookRevisions
-            .AsNoTracking()
-            .Where(r => r.BookId == request.BookId)
-            .OrderByDescending(r => r.CreatedAt)
-            .Select(r => new CreatorBookRevisionDto(
-                r.Id,
-                r.VersionString,
-                r.IsPublished,
-                r.CreatedAt,
-                r.PublishedAt
-            ))
-            .ToListAsync(cancellationToken);
-
-        return FluentResults.Result.Ok(revisions);
-    }
-}

src/NexusReader.Application/Queries/Creator/GetCreatorDashboardDataQuery.cs

@@ -1,109 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.EntityFrameworkCore;
-using NexusReader.Application.Abstractions.Messaging;
-using NexusReader.Application.DTOs.Creator;
-using NexusReader.Data.Persistence;
-
-namespace NexusReader.Application.Queries.Creator;
-
-/// <summary>
-/// Query to load aggregated Creator Dashboard telemetry metrics and book listings.
-/// </summary>
-/// <param name="UserId">The ID of the creator requesting dashboard data.</param>
-/// <param name="TenantId">The tenant ID for multi-tenant isolation.</param>
-public record GetCreatorDashboardDataQuery(string UserId, string TenantId) : IQuery<CreatorDashboardDataDto>;
-
-/// <summary>
-/// Handler that executes projection-only LINQ queries to aggregate metrics and compute word counts
-/// without loading raw chapter content into memory or tracking them in the EF Core Change Tracker.
-/// </summary>
-public class GetCreatorDashboardDataQueryHandler : IQueryHandler<GetCreatorDashboardDataQuery, CreatorDashboardDataDto>
-{
-    private readonly IDbContextFactory<AppDbContext> _dbContextFactory;
-
-    public GetCreatorDashboardDataQueryHandler(IDbContextFactory<AppDbContext> dbContextFactory)
-    {
-        _dbContextFactory = dbContextFactory;
-    }
-
-    public async Task<FluentResults.Result<CreatorDashboardDataDto>> Handle(GetCreatorDashboardDataQuery request, CancellationToken cancellationToken)
-    {
-        using var dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-
-        // Execute projection-only LINQ query. The heavy MarkdownContent is projected only as integer lengths.
-        var projectedBooks = await dbContext.Books
-            .AsNoTracking()
-            .Where(b => b.UserId == request.UserId && b.TenantId == request.TenantId)
-            .Select(b => new
-            {
-                b.Id,
-                b.Title,
-                LivePublishedRevision = b.LivePublishedRevision == null ? null : new CreatorBookRevisionDto(
-                    b.LivePublishedRevision.Id,
-                    b.LivePublishedRevision.VersionString,
-                    b.LivePublishedRevision.IsPublished,
-                    b.LivePublishedRevision.CreatedAt,
-                    b.LivePublishedRevision.PublishedAt
-                ),
-                CurrentDraftRevision = b.CurrentDraftRevision == null ? null : new CreatorBookRevisionDto(
-                    b.CurrentDraftRevision.Id,
-                    b.CurrentDraftRevision.VersionString,
-                    b.CurrentDraftRevision.IsPublished,
-                    b.CurrentDraftRevision.CreatedAt,
-                    b.CurrentDraftRevision.PublishedAt
-                ),
-                FirstChapterId = b.CurrentDraftRevision == null 
-                    ? (Guid?)null 
-                    : b.CurrentDraftRevision.Chapters.OrderBy(c => c.SortOrder).Select(c => c.Id).FirstOrDefault(),
-                ChapterContentLengths = b.CurrentDraftRevision == null 
-                    ? new List<int>() 
-                    : b.CurrentDraftRevision.Chapters.Select(c => c.MarkdownContent.Length).ToList()
-            })
-            .ToListAsync(cancellationToken);
-
-        var booksList = new List<CreatorBookDto>();
-        int totalReads = 0;
-        int totalWords = 0;
-
-        foreach (var pBook in projectedBooks)
-        {
-            // Estimate word count (approx. 6 characters per word as a database-friendly standard length)
-            int wordCount = pBook.ChapterContentLengths.Sum(len => len / 6);
-            totalWords += wordCount;
-
-            // Generate deterministic simulated telemetry metrics scoped to this Book
-            int bookReads = Math.Abs(pBook.Id.GetHashCode() % 1000) + 120;
-            totalReads += bookReads;
-
-            var bookDto = new CreatorBookDto(
-                pBook.Id,
-                pBook.Title,
-                wordCount,
-                bookReads,
-                pBook.FirstChapterId,
-                pBook.LivePublishedRevision,
-                pBook.CurrentDraftRevision
-            );
-
-            booksList.Add(bookDto);
-        }
-
-        // Calculate aggregate dashboard metrics based on projected stats
-        int activeReaders = projectedBooks.Count == 0 ? 0 : Math.Abs(request.UserId.GetHashCode() % 15) + 3;
-        decimal grossRevenue = totalReads * 1.49m;
-        double avgReadTime = projectedBooks.Count == 0 ? 0 : Math.Round(totalWords / 250.0, 1); // standard 250 words per minute reading speed
-
-        var metrics = new DashboardMetricsDto(
-            totalReads,
-            avgReadTime,
-            activeReaders,
-            grossRevenue
-        );
-
-        return FluentResults.Result.Ok(new CreatorDashboardDataDto(metrics, booksList));
-    }
-}

src/NexusReader.Data/Migrations/20260611183927_AddBookVersioningSupport.Designer.cs

@@ -1,865 +0,0 @@
-// <auto-generated />
-using System;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using NexusReader.Data.Persistence;
-using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
-
-#nullable disable
-
-namespace NexusReader.Data.Migrations
-{
-    [DbContext(typeof(AppDbContext))]
-    [Migration("20260611183927_AddBookVersioningSupport")]
-    partial class AddBookVersioningSupport
-    {
-        /// <inheritdoc />
-        protected override void BuildTargetModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder
-                .HasAnnotation("ProductVersion", "10.0.7")
-                .HasAnnotation("Relational:MaxIdentifierLength", 63);
-
-            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
-
-            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("character varying(256)");
-
-                    b.Property<string>("NormalizedName")
-                        .HasMaxLength(256)
-                        .HasColumnType("character varying(256)");
-
-                    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");
-
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
-
-                    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");
-
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
-
-                    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.Author", b =>
-                {
-                    b.Property<int>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
-
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
-
-                    b.Property<string>("Name")
-                        .IsRequired()
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("Authors");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Book", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid?>("CurrentDraftRevisionId")
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid?>("LivePublishedRevisionId")
-                        .HasColumnType("uuid");
-
-                    b.Property<string>("TenantId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<string>("Title")
-                        .IsRequired()
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.Property<string>("UserId")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("CurrentDraftRevisionId");
-
-                    b.HasIndex("LivePublishedRevisionId");
-
-                    b.HasIndex("TenantId");
-
-                    b.HasIndex("UserId");
-
-                    b.ToTable("Books");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.BookRevision", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid>("BookId")
-                        .HasColumnType("uuid");
-
-                    b.Property<DateTime>("CreatedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<bool>("IsPublished")
-                        .HasColumnType("boolean");
-
-                    b.Property<DateTime?>("PublishedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<string>("VersionString")
-                        .IsRequired()
-                        .HasMaxLength(100)
-                        .HasColumnType("character varying(100)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("BookId");
-
-                    b.ToTable("BookRevisions");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Chapter", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid>("BookRevisionId")
-                        .HasColumnType("uuid");
-
-                    b.Property<string>("MarkdownContent")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<int>("SortOrder")
-                        .HasColumnType("integer");
-
-                    b.Property<string>("Title")
-                        .IsRequired()
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("BookRevisionId");
-
-                    b.ToTable("Chapters");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Ebook", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<DateTime>("AddedDate")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<int>("AuthorId")
-                        .HasColumnType("integer");
-
-                    b.Property<string>("CoverUrl")
-                        .HasColumnType("text");
-
-                    b.Property<string>("Description")
-                        .HasColumnType("text");
-
-                    b.Property<string>("FilePath")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<bool>("IsReadyForReading")
-                        .HasColumnType("boolean");
-
-                    b.Property<string>("LastChapter")
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.Property<int>("LastChapterIndex")
-                        .HasColumnType("integer");
-
-                    b.Property<DateTime?>("LastReadDate")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<double>("Progress")
-                        .HasColumnType("double precision");
-
-                    b.Property<string>("TenantId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<string>("Title")
-                        .IsRequired()
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.Property<string>("UserId")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("AuthorId");
-
-                    b.HasIndex("TenantId");
-
-                    b.HasIndex("UserId");
-
-                    b.ToTable("Ebooks");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.KnowledgeUnit", b =>
-                {
-                    b.Property<string>("Id")
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<string>("Content")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<DateTime>("CreatedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<Guid?>("EbookId")
-                        .HasColumnType("uuid");
-
-                    b.Property<string>("MetadataJson")
-                        .HasColumnType("text");
-
-                    b.Property<string>("TenantId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<int>("Type")
-                        .HasColumnType("integer");
-
-                    b.Property<string>("Version")
-                        .IsRequired()
-                        .HasMaxLength(50)
-                        .HasColumnType("character varying(50)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("EbookId");
-
-                    b.HasIndex("TenantId");
-
-                    b.ToTable("KnowledgeUnits");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.KnowledgeUnitLink", b =>
-                {
-                    b.Property<int>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
-
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
-
-                    b.Property<string>("RelationType")
-                        .IsRequired()
-                        .HasMaxLength(50)
-                        .HasColumnType("character varying(50)");
-
-                    b.Property<string>("SourceUnitId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<string>("TargetUnitId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("SourceUnitId");
-
-                    b.HasIndex("TargetUnitId");
-
-                    b.ToTable("KnowledgeUnitLinks");
-                });
-
-            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>("DisplayName")
-                        .HasMaxLength(100)
-                        .HasColumnType("character varying(100)");
-
-                    b.Property<string>("Email")
-                        .HasMaxLength(256)
-                        .HasColumnType("character varying(256)");
-
-                    b.Property<bool>("EmailConfirmed")
-                        .HasColumnType("boolean");
-
-                    b.Property<DateTime?>("LastAiActionDate")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<DateTime?>("LastReadAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<string>("LastReadPageId")
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.Property<bool>("LockoutEnabled")
-                        .HasColumnType("boolean");
-
-                    b.Property<DateTimeOffset?>("LockoutEnd")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<string>("NormalizedEmail")
-                        .HasMaxLength(256)
-                        .HasColumnType("character varying(256)");
-
-                    b.Property<string>("NormalizedUserName")
-                        .HasMaxLength(256)
-                        .HasColumnType("character varying(256)");
-
-                    b.Property<string>("PasswordHash")
-                        .HasColumnType("text");
-
-                    b.Property<string>("PhoneNumber")
-                        .HasColumnType("text");
-
-                    b.Property<bool>("PhoneNumberConfirmed")
-                        .HasColumnType("boolean");
-
-                    b.Property<string>("SecurityStamp")
-                        .HasColumnType("text");
-
-                    b.Property<int>("SubscriptionPlanId")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("integer")
-                        .HasDefaultValue(1);
-
-                    b.Property<string>("TenantId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<int>("ThemePreference")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("integer")
-                        .HasDefaultValue(0);
-
-                    b.Property<bool>("TwoFactorEnabled")
-                        .HasColumnType("boolean");
-
-                    b.Property<string>("UserName")
-                        .HasMaxLength(256)
-                        .HasColumnType("character varying(256)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("NormalizedEmail")
-                        .HasDatabaseName("EmailIndex");
-
-                    b.HasIndex("NormalizedUserName")
-                        .IsUnique()
-                        .HasDatabaseName("UserNameIndex");
-
-                    b.HasIndex("SubscriptionPlanId");
-
-                    b.HasIndex("TenantId");
-
-                    b.ToTable("AspNetUsers", (string)null);
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.QuizResult", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<DateTime>("CompletedDate")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<int>("Score")
-                        .HasColumnType("integer");
-
-                    b.Property<string>("TenantId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<string>("Topic")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<int>("TotalQuestions")
-                        .HasColumnType("integer");
-
-                    b.Property<string>("UserId")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("TenantId");
-
-                    b.HasIndex("UserId");
-
-                    b.ToTable("QuizResults");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.SemanticKnowledgeCache", b =>
-                {
-                    b.Property<string>("ContentHash")
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<DateTime>("CreatedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<string>("JsonData")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("ModelId")
-                        .IsRequired()
-                        .HasMaxLength(50)
-                        .HasColumnType("character varying(50)");
-
-                    b.Property<string>("OriginalText")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("PromptVersion")
-                        .IsRequired()
-                        .HasMaxLength(10)
-                        .HasColumnType("character varying(10)");
-
-                    b.Property<string>("TenantId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.HasKey("ContentHash");
-
-                    b.HasIndex("ContentHash")
-                        .IsUnique();
-
-                    b.HasIndex("TenantId");
-
-                    b.ToTable("SemanticKnowledgeCache");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.SubscriptionPlan", b =>
-                {
-                    b.Property<int>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
-
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
-
-                    b.Property<int>("AITokenLimit")
-                        .HasColumnType("integer");
-
-                    b.Property<bool>("IsUnlimitedTokens")
-                        .HasColumnType("boolean");
-
-                    b.Property<decimal>("MonthlyPrice")
-                        .HasColumnType("numeric");
-
-                    b.Property<string>("PlanName")
-                        .IsRequired()
-                        .HasMaxLength(50)
-                        .HasColumnType("character varying(50)");
-
-                    b.Property<string>("StripeProductId")
-                        .IsRequired()
-                        .HasMaxLength(50)
-                        .HasColumnType("character varying(50)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("PlanName")
-                        .IsUnique();
-
-                    b.ToTable("SubscriptionPlans");
-
-                    b.HasData(
-                        new
-                        {
-                            Id = 1,
-                            AITokenLimit = 5000,
-                            IsUnlimitedTokens = false,
-                            MonthlyPrice = 0m,
-                            PlanName = "Free",
-                            StripeProductId = "prod_Free789"
-                        },
-                        new
-                        {
-                            Id = 2,
-                            AITokenLimit = 10000,
-                            IsUnlimitedTokens = false,
-                            MonthlyPrice = 9.99m,
-                            PlanName = "Basic",
-                            StripeProductId = "prod_basic_placeholder"
-                        },
-                        new
-                        {
-                            Id = 3,
-                            AITokenLimit = 50000,
-                            IsUnlimitedTokens = false,
-                            MonthlyPrice = 19.99m,
-                            PlanName = "Pro",
-                            StripeProductId = "prod_pro_placeholder"
-                        },
-                        new
-                        {
-                            Id = 4,
-                            AITokenLimit = 1000000000,
-                            IsUnlimitedTokens = true,
-                            MonthlyPrice = 99.99m,
-                            PlanName = "Enterprise",
-                            StripeProductId = "prod_enterprise_placeholder"
-                        });
-                });
-
-            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.Book", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.BookRevision", "CurrentDraftRevision")
-                        .WithMany()
-                        .HasForeignKey("CurrentDraftRevisionId")
-                        .OnDelete(DeleteBehavior.Restrict);
-
-                    b.HasOne("NexusReader.Domain.Entities.BookRevision", "LivePublishedRevision")
-                        .WithMany()
-                        .HasForeignKey("LivePublishedRevisionId")
-                        .OnDelete(DeleteBehavior.Restrict);
-
-                    b.HasOne("NexusReader.Domain.Entities.NexusUser", "User")
-                        .WithMany()
-                        .HasForeignKey("UserId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("CurrentDraftRevision");
-
-                    b.Navigation("LivePublishedRevision");
-
-                    b.Navigation("User");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.BookRevision", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.Book", "Book")
-                        .WithMany("Revisions")
-                        .HasForeignKey("BookId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("Book");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Chapter", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.BookRevision", "BookRevision")
-                        .WithMany("Chapters")
-                        .HasForeignKey("BookRevisionId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("BookRevision");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Ebook", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.Author", "Author")
-                        .WithMany("Ebooks")
-                        .HasForeignKey("AuthorId")
-                        .OnDelete(DeleteBehavior.Restrict)
-                        .IsRequired();
-
-                    b.HasOne("NexusReader.Domain.Entities.NexusUser", "User")
-                        .WithMany("Ebooks")
-                        .HasForeignKey("UserId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("Author");
-
-                    b.Navigation("User");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.KnowledgeUnit", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.Ebook", "Ebook")
-                        .WithMany()
-                        .HasForeignKey("EbookId")
-                        .OnDelete(DeleteBehavior.Cascade);
-
-                    b.Navigation("Ebook");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.KnowledgeUnitLink", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.KnowledgeUnit", "SourceUnit")
-                        .WithMany("OutgoingLinks")
-                        .HasForeignKey("SourceUnitId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.HasOne("NexusReader.Domain.Entities.KnowledgeUnit", "TargetUnit")
-                        .WithMany("IncomingLinks")
-                        .HasForeignKey("TargetUnitId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("SourceUnit");
-
-                    b.Navigation("TargetUnit");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.NexusUser", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.SubscriptionPlan", "SubscriptionPlan")
-                        .WithMany()
-                        .HasForeignKey("SubscriptionPlanId")
-                        .OnDelete(DeleteBehavior.Restrict)
-                        .IsRequired();
-
-                    b.Navigation("SubscriptionPlan");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.QuizResult", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.NexusUser", "User")
-                        .WithMany("QuizResults")
-                        .HasForeignKey("UserId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("User");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Author", b =>
-                {
-                    b.Navigation("Ebooks");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Book", b =>
-                {
-                    b.Navigation("Revisions");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.BookRevision", b =>
-                {
-                    b.Navigation("Chapters");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.KnowledgeUnit", b =>
-                {
-                    b.Navigation("IncomingLinks");
-
-                    b.Navigation("OutgoingLinks");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.NexusUser", b =>
-                {
-                    b.Navigation("Ebooks");
-
-                    b.Navigation("QuizResults");
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}

src/NexusReader.Data/Migrations/20260611183927_AddBookVersioningSupport.cs

@@ -1,141 +0,0 @@
-using System;
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace NexusReader.Data.Migrations
-{
-    /// <inheritdoc />
-    public partial class AddBookVersioningSupport : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.CreateTable(
-                name: "BookRevisions",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "uuid", nullable: false),
-                    BookId = table.Column<Guid>(type: "uuid", nullable: false),
-                    VersionString = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false),
-                    IsPublished = table.Column<bool>(type: "boolean", nullable: false),
-                    CreatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
-                    PublishedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_BookRevisions", x => x.Id);
-                });
-
-            migrationBuilder.CreateTable(
-                name: "Books",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "uuid", nullable: false),
-                    Title = table.Column<string>(type: "character varying(255)", maxLength: 255, nullable: false),
-                    TenantId = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: false),
-                    UserId = table.Column<string>(type: "text", nullable: false),
-                    CurrentDraftRevisionId = table.Column<Guid>(type: "uuid", nullable: true),
-                    LivePublishedRevisionId = table.Column<Guid>(type: "uuid", nullable: true)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_Books", x => x.Id);
-                    table.ForeignKey(
-                        name: "FK_Books_AspNetUsers_UserId",
-                        column: x => x.UserId,
-                        principalTable: "AspNetUsers",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
-                    table.ForeignKey(
-                        name: "FK_Books_BookRevisions_CurrentDraftRevisionId",
-                        column: x => x.CurrentDraftRevisionId,
-                        principalTable: "BookRevisions",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Restrict);
-                    table.ForeignKey(
-                        name: "FK_Books_BookRevisions_LivePublishedRevisionId",
-                        column: x => x.LivePublishedRevisionId,
-                        principalTable: "BookRevisions",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Restrict);
-                });
-
-            migrationBuilder.CreateTable(
-                name: "Chapters",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "uuid", nullable: false),
-                    BookRevisionId = table.Column<Guid>(type: "uuid", nullable: false),
-                    Title = table.Column<string>(type: "character varying(255)", maxLength: 255, nullable: false),
-                    MarkdownContent = table.Column<string>(type: "text", nullable: false),
-                    SortOrder = table.Column<int>(type: "integer", nullable: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_Chapters", x => x.Id);
-                    table.ForeignKey(
-                        name: "FK_Chapters_BookRevisions_BookRevisionId",
-                        column: x => x.BookRevisionId,
-                        principalTable: "BookRevisions",
-                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
-                });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_BookRevisions_BookId",
-                table: "BookRevisions",
-                column: "BookId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_Books_CurrentDraftRevisionId",
-                table: "Books",
-                column: "CurrentDraftRevisionId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_Books_LivePublishedRevisionId",
-                table: "Books",
-                column: "LivePublishedRevisionId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_Books_TenantId",
-                table: "Books",
-                column: "TenantId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_Books_UserId",
-                table: "Books",
-                column: "UserId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_Chapters_BookRevisionId",
-                table: "Chapters",
-                column: "BookRevisionId");
-
-            migrationBuilder.AddForeignKey(
-                name: "FK_BookRevisions_Books_BookId",
-                table: "BookRevisions",
-                column: "BookId",
-                principalTable: "Books",
-                principalColumn: "Id",
-                onDelete: ReferentialAction.Cascade);
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropForeignKey(
-                name: "FK_BookRevisions_Books_BookId",
-                table: "BookRevisions");
-
-            migrationBuilder.DropTable(
-                name: "Chapters");
-
-            migrationBuilder.DropTable(
-                name: "Books");
-
-            migrationBuilder.DropTable(
-                name: "BookRevisions");
-        }
-    }
-}

src/NexusReader.Data/Migrations/AppDbContextModelSnapshot.cs

@@ -172,103 +172,6 @@ namespace NexusReader.Data.Migrations
                     b.ToTable("Authors");
                 });
 
-            modelBuilder.Entity("NexusReader.Domain.Entities.Book", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid?>("CurrentDraftRevisionId")
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid?>("LivePublishedRevisionId")
-                        .HasColumnType("uuid");
-
-                    b.Property<string>("TenantId")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("character varying(128)");
-
-                    b.Property<string>("Title")
-                        .IsRequired()
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.Property<string>("UserId")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("CurrentDraftRevisionId");
-
-                    b.HasIndex("LivePublishedRevisionId");
-
-                    b.HasIndex("TenantId");
-
-                    b.HasIndex("UserId");
-
-                    b.ToTable("Books");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.BookRevision", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid>("BookId")
-                        .HasColumnType("uuid");
-
-                    b.Property<DateTime>("CreatedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<bool>("IsPublished")
-                        .HasColumnType("boolean");
-
-                    b.Property<DateTime?>("PublishedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<string>("VersionString")
-                        .IsRequired()
-                        .HasMaxLength(100)
-                        .HasColumnType("character varying(100)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("BookId");
-
-                    b.ToTable("BookRevisions");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Chapter", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<Guid>("BookRevisionId")
-                        .HasColumnType("uuid");
-
-                    b.Property<string>("MarkdownContent")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<int>("SortOrder")
-                        .HasColumnType("integer");
-
-                    b.Property<string>("Title")
-                        .IsRequired()
-                        .HasMaxLength(255)
-                        .HasColumnType("character varying(255)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("BookRevisionId");
-
-                    b.ToTable("Chapters");
-                });
-
             modelBuilder.Entity("NexusReader.Domain.Entities.Ebook", b =>
                 {
                     b.Property<Guid>("Id")
@@ -711,53 +614,6 @@ namespace NexusReader.Data.Migrations
                         .IsRequired();
                 });
 
-            modelBuilder.Entity("NexusReader.Domain.Entities.Book", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.BookRevision", "CurrentDraftRevision")
-                        .WithMany()
-                        .HasForeignKey("CurrentDraftRevisionId")
-                        .OnDelete(DeleteBehavior.Restrict);
-
-                    b.HasOne("NexusReader.Domain.Entities.BookRevision", "LivePublishedRevision")
-                        .WithMany()
-                        .HasForeignKey("LivePublishedRevisionId")
-                        .OnDelete(DeleteBehavior.Restrict);
-
-                    b.HasOne("NexusReader.Domain.Entities.NexusUser", "User")
-                        .WithMany()
-                        .HasForeignKey("UserId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("CurrentDraftRevision");
-
-                    b.Navigation("LivePublishedRevision");
-
-                    b.Navigation("User");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.BookRevision", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.Book", "Book")
-                        .WithMany("Revisions")
-                        .HasForeignKey("BookId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("Book");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.Chapter", b =>
-                {
-                    b.HasOne("NexusReader.Domain.Entities.BookRevision", "BookRevision")
-                        .WithMany("Chapters")
-                        .HasForeignKey("BookRevisionId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.Navigation("BookRevision");
-                });
-
             modelBuilder.Entity("NexusReader.Domain.Entities.Ebook", b =>
                 {
                     b.HasOne("NexusReader.Domain.Entities.Author", "Author")
@@ -833,16 +689,6 @@ namespace NexusReader.Data.Migrations
                     b.Navigation("Ebooks");
                 });
 
-            modelBuilder.Entity("NexusReader.Domain.Entities.Book", b =>
-                {
-                    b.Navigation("Revisions");
-                });
-
-            modelBuilder.Entity("NexusReader.Domain.Entities.BookRevision", b =>
-                {
-                    b.Navigation("Chapters");
-                });
-
             modelBuilder.Entity("NexusReader.Domain.Entities.KnowledgeUnit", b =>
                 {
                     b.Navigation("IncomingLinks");

src/NexusReader.Data/Persistence/AppDbContext.cs

@@ -25,9 +25,6 @@ public class AppDbContext : IdentityDbContext<NexusUser>
     public DbSet<QuizResult> QuizResults => Set<QuizResult>();
     public DbSet<SubscriptionPlan> SubscriptionPlans => Set<SubscriptionPlan>();
     public DbSet<Author> Authors => Set<Author>();
-    public DbSet<Book> Books => Set<Book>();
-    public DbSet<BookRevision> BookRevisions => Set<BookRevision>();
-    public DbSet<Chapter> Chapters => Set<Chapter>();
 
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
@@ -117,48 +114,6 @@ public class AppDbContext : IdentityDbContext<NexusUser>
             entity.HasIndex(e => e.TenantId);
         });
 
-        modelBuilder.Entity<Book>(entity =>
-        {
-            entity.HasKey(b => b.Id);
-            entity.HasIndex(b => b.TenantId);
-            entity.HasIndex(b => b.UserId);
-
-            entity.HasOne(e => e.User)
-                .WithMany()
-                .HasForeignKey(e => e.UserId)
-                .OnDelete(DeleteBehavior.Cascade);
-
-            entity.HasMany(b => b.Revisions)
-                .WithOne(r => r.Book)
-                .HasForeignKey(r => r.BookId)
-                .OnDelete(DeleteBehavior.Cascade);
-
-            entity.HasOne(b => b.CurrentDraftRevision)
-                .WithMany()
-                .HasForeignKey(b => b.CurrentDraftRevisionId)
-                .OnDelete(DeleteBehavior.Restrict);
-
-            entity.HasOne(b => b.LivePublishedRevision)
-                .WithMany()
-                .HasForeignKey(b => b.LivePublishedRevisionId)
-                .OnDelete(DeleteBehavior.Restrict);
-        });
-
-        modelBuilder.Entity<BookRevision>(entity =>
-        {
-            entity.HasKey(r => r.Id);
-
-            entity.HasMany(r => r.Chapters)
-                .WithOne(c => c.BookRevision)
-                .HasForeignKey(c => c.BookRevisionId)
-                .OnDelete(DeleteBehavior.Cascade);
-        });
-
-        modelBuilder.Entity<Chapter>(entity =>
-        {
-            entity.HasKey(c => c.Id);
-        });
-
         // Seed Subscription Plans with deterministic IDs
         modelBuilder.Entity<SubscriptionPlan>().HasData(
             new SubscriptionPlan { Id = 1, PlanName = SubscriptionPlan.FreeName, AITokenLimit = 5000, IsUnlimitedTokens = false, MonthlyPrice = 0m, StripeProductId = "prod_Free789" },

src/NexusReader.Data/Persistence/DbInitializer.cs

@@ -136,72 +136,6 @@ public static class DbInitializer
             {
                 Console.WriteLine("[Seeder] Admin user already exists.");
             }
-
-            // Seed Sample Authored Book for Creator Dashboard
-            var activeAdmin = await dbContext.Users.FirstOrDefaultAsync(u => u.NormalizedEmail == normalizedEmail);
-            if (activeAdmin != null)
-            {
-                if (!dbContext.Books.Any(b => b.UserId == activeAdmin.Id))
-                {
-                    var sampleBookId = Guid.NewGuid();
-                    var sampleBook = new Book
-                    {
-                        Id = sampleBookId,
-                        Title = "Przewodnik po platformie Nexus",
-                        UserId = activeAdmin.Id,
-                        TenantId = activeAdmin.TenantId ?? "global"
-                    };
-                    dbContext.Books.Add(sampleBook);
-                    await dbContext.SaveChangesAsync();
-
-                    var sampleRevisionId = Guid.NewGuid();
-                    var sampleRevision = new BookRevision
-                    {
-                        Id = sampleRevisionId,
-                        BookId = sampleBookId,
-                        VersionString = "Working Draft",
-                        IsPublished = false,
-                        CreatedAt = DateTime.UtcNow
-                    };
-                    dbContext.BookRevisions.Add(sampleRevision);
-                    await dbContext.SaveChangesAsync();
-
-                    var sampleChapter1 = new Chapter
-                    {
-                        Id = Guid.NewGuid(),
-                        BookRevisionId = sampleRevisionId,
-                        Title = "Rozdział 1: Wprowadzenie do Zen Mode",
-                        MarkdownContent = @"# Zen Mode Editor
-
-Welcome to your dedicated workspace. This premium panel supports Notion-like WYSIWYG editing.
-
-## Features:
-- **Zero Distraction**: Simple elevation and border framing.
-- **GFM Tables**: Consistent cell padding and hover striping.
-- **Clean Code Blocks**: Pre-rendered base64 font-loaded code-preview blocks.",
-                        SortOrder = 1
-                    };
-
-                    var sampleChapter2 = new Chapter
-                    {
-                        Id = Guid.NewGuid(),
-                        BookRevisionId = sampleRevisionId,
-                        Title = "Rozdział 2: Zabezpieczenia i XSS",
-                        MarkdownContent = @"# Security Overview
-
-This module provides Magic Number image signature checking and HtmlSanitizer filters.",
-                        SortOrder = 2
-                    };
-
-                    dbContext.Chapters.Add(sampleChapter1);
-                    dbContext.Chapters.Add(sampleChapter2);
-                    await dbContext.SaveChangesAsync();
-
-                    sampleBook.CurrentDraftRevisionId = sampleRevisionId;
-                    await dbContext.SaveChangesAsync();
-                    Console.WriteLine("[Seeder] Sample authored book and chapters seeded for admin.");
-                }
-            }
         }
         catch (Exception ex)
         {

src/NexusReader.Domain/Entities/Book.cs

@@ -1,39 +0,0 @@
-using System.ComponentModel.DataAnnotations;
-using System.ComponentModel.DataAnnotations.Schema;
-
-namespace NexusReader.Domain.Entities;
-
-/// <summary>
-/// Represents a Book metadata entry that references its decoupled revisions.
-/// </summary>
-public class Book
-{
-    [Key]
-    public Guid Id { get; set; } = Guid.NewGuid();
-
-    [Required]
-    [MaxLength(255)]
-    public string Title { get; set; } = string.Empty;
-
-    [Required]
-    [MaxLength(128)]
-    public string TenantId { get; set; } = "global";
-
-    [Required]
-    public string UserId { get; set; } = string.Empty;
-
-    [ForeignKey(nameof(UserId))]
-    public virtual NexusUser? User { get; set; }
-
-    public Guid? CurrentDraftRevisionId { get; set; }
-
-    [ForeignKey(nameof(CurrentDraftRevisionId))]
-    public virtual BookRevision? CurrentDraftRevision { get; set; }
-
-    public Guid? LivePublishedRevisionId { get; set; }
-
-    [ForeignKey(nameof(LivePublishedRevisionId))]
-    public virtual BookRevision? LivePublishedRevision { get; set; }
-
-    public virtual ICollection<BookRevision> Revisions { get; set; } = new List<BookRevision>();
-}

src/NexusReader.Domain/Entities/BookRevision.cs

@@ -1,31 +0,0 @@
-using System.ComponentModel.DataAnnotations;
-using System.ComponentModel.DataAnnotations.Schema;
-
-namespace NexusReader.Domain.Entities;
-
-/// <summary>
-/// Encapsulates a snapshot or draft version of a Book's chapters.
-/// </summary>
-public class BookRevision
-{
-    [Key]
-    public Guid Id { get; set; } = Guid.NewGuid();
-
-    [Required]
-    public Guid BookId { get; set; }
-
-    [ForeignKey(nameof(BookId))]
-    public virtual Book Book { get; set; } = null!;
-
-    [Required]
-    [MaxLength(100)]
-    public string VersionString { get; set; } = "Working Draft";
-
-    public bool IsPublished { get; set; } = false;
-
-    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
-
-    public DateTime? PublishedAt { get; set; }
-
-    public virtual ICollection<Chapter> Chapters { get; set; } = new List<Chapter>();
-}

src/NexusReader.Domain/Entities/Chapter.cs

@@ -1,29 +0,0 @@
-using System.ComponentModel.DataAnnotations;
-using System.ComponentModel.DataAnnotations.Schema;
-
-namespace NexusReader.Domain.Entities;
-
-/// <summary>
-/// Represents a chapter belonging strictly to a specific BookRevision.
-/// </summary>
-public class Chapter
-{
-    [Key]
-    public Guid Id { get; set; } = Guid.NewGuid();
-
-    [Required]
-    public Guid BookRevisionId { get; set; }
-
-    [ForeignKey(nameof(BookRevisionId))]
-    public virtual BookRevision BookRevision { get; set; } = null!;
-
-    [Required]
-    [MaxLength(255)]
-    public string Title { get; set; } = string.Empty;
-
-    [Required]
-    public string MarkdownContent { get; set; } = string.Empty;
-
-    [Required]
-    public int SortOrder { get; set; }
-}

src/NexusReader.Domain/Exceptions/BookNotFoundException.cs

@@ -1,12 +0,0 @@
-namespace NexusReader.Domain.Exceptions;
-
-/// <summary>
-/// Custom domain exception thrown when a Book cannot be found by its ID.
-/// </summary>
-public class BookNotFoundException : Exception
-{
-    public BookNotFoundException(Guid bookId) 
-        : base($"Book with ID '{bookId}' was not found.")
-    {
-    }
-}

src/NexusReader.Infrastructure/Configuration/HtmlSanitizerSettings.cs

@@ -1,35 +0,0 @@
-using System.Collections.Generic;
-
-namespace NexusReader.Infrastructure.Configuration;
-
-/// <summary>
-/// Settings for configuring allowed tags, attributes, CSS properties, and schemes in HtmlSanitizerService.
-/// </summary>
-public class HtmlSanitizerSettings
-{
-    public const string SectionName = "HtmlSanitizer";
-
-    /// <summary>
-    /// Gets or sets the list of HTML tags that are allowed.
-    /// If null or empty, the default allowed tags list is used.
-    /// </summary>
-    public List<string>? AllowedTags { get; set; }
-
-    /// <summary>
-    /// Gets or sets the list of HTML attributes that are allowed.
-    /// If null or empty, the default allowed attributes list is used.
-    /// </summary>
-    public List<string>? AllowedAttributes { get; set; }
-
-    /// <summary>
-    /// Gets or sets the list of CSS properties that are allowed.
-    /// If null or empty, the default allowed CSS properties list is used.
-    /// </summary>
-    public List<string>? AllowedCssProperties { get; set; }
-
-    /// <summary>
-    /// Gets or sets the list of URI schemes that are allowed (e.g. "http", "https").
-    /// If null or empty, the default allowed schemes list is used.
-    /// </summary>
-    public List<string>? AllowedSchemes { get; set; }
-}

src/NexusReader.Infrastructure/DependencyInjection.cs

@@ -55,15 +55,7 @@ public static class DependencyInjection
 
         // Qdrant Client registration
         var qdrantUrl = configuration.GetConnectionString("QdrantConnection") ?? "http://localhost:6334";
-        var qdrantApiKey = configuration["Qdrant:ApiKey"];
-        services.AddSingleton<QdrantClient>(sp => 
-        {
-            if (!string.IsNullOrEmpty(qdrantApiKey))
-            {
-                return new QdrantClient(new Uri(qdrantUrl), apiKey: qdrantApiKey);
-            }
-            return new QdrantClient(new Uri(qdrantUrl));
-        });
+        services.AddSingleton<QdrantClient>(sp => new QdrantClient(new Uri(qdrantUrl)));
 
         // Neo4j Driver registration (supports optional authentication)
         var neo4jUrl = configuration.GetConnectionString("Neo4jConnection") ?? "bolt://localhost:7687";
@@ -86,7 +78,6 @@ public static class DependencyInjection
         services.Configure<AiSettings>(configuration.GetSection(AiSettings.SectionName));
         services.Configure<StripeSettings>(configuration.GetSection(StripeSettings.SectionName));
         services.Configure<RagMonetizationOptions>(configuration.GetSection(RagMonetizationOptions.SectionName));
-        services.Configure<HtmlSanitizerSettings>(configuration.GetSection(HtmlSanitizerSettings.SectionName));
         var aiSettings = configuration.GetSection(AiSettings.SectionName).Get<AiSettings>() ?? new AiSettings();
 
         if (string.IsNullOrWhiteSpace(aiSettings.ApiKey) || aiSettings.ApiKey == "PLACEHOLDER")

src/NexusReader.Infrastructure/NexusReader.Infrastructure.csproj

@@ -29,7 +29,6 @@
     <PackageReference Include="Polly" />
     <PackageReference Include="Polly.Extensions.Http" />
     <PackageReference Include="HtmlSanitizer" />
-    <PackageReference Include="Markdig" />
     <PackageReference Include="Qdrant.Client" />
     <PackageReference Include="Stripe.net" />
     <PackageReference Include="VersOne.Epub" />

src/NexusReader.Infrastructure/Services/HtmlSanitizerService.cs

@@ -1,8 +1,5 @@
 using Ganss.Xss;
-using Microsoft.Extensions.Options;
 using NexusReader.Application.Abstractions.Services;
-using NexusReader.Infrastructure.Configuration;
-using Markdig;
 
 namespace NexusReader.Infrastructure.Services;
 
@@ -12,53 +9,13 @@ namespace NexusReader.Infrastructure.Services;
 public class HtmlSanitizerService : ISanitizerService
 {
     private readonly HtmlSanitizer _sanitizer;
-    private readonly MarkdownPipeline _pipeline;
 
-    public HtmlSanitizerService(IOptions<HtmlSanitizerSettings>? options = null)
+    public HtmlSanitizerService()
     {
         _sanitizer = new HtmlSanitizer();
-        _pipeline = new MarkdownPipelineBuilder().UseAdvancedExtensions().Build();
         
-        if (options?.Value != null)
-        {
-            var settings = options.Value;
-            
-            if (settings.AllowedTags != null && settings.AllowedTags.Count > 0)
-            {
-                _sanitizer.AllowedTags.Clear();
-                foreach (var tag in settings.AllowedTags)
-                {
-                    _sanitizer.AllowedTags.Add(tag);
-                }
-            }
-
-            if (settings.AllowedAttributes != null && settings.AllowedAttributes.Count > 0)
-            {
-                _sanitizer.AllowedAttributes.Clear();
-                foreach (var attr in settings.AllowedAttributes)
-                {
-                    _sanitizer.AllowedAttributes.Add(attr);
-                }
-            }
-
-            if (settings.AllowedCssProperties != null && settings.AllowedCssProperties.Count > 0)
-            {
-                _sanitizer.AllowedCssProperties.Clear();
-                foreach (var prop in settings.AllowedCssProperties)
-                {
-                    _sanitizer.AllowedCssProperties.Add(prop);
-                }
-            }
-
-            if (settings.AllowedSchemes != null && settings.AllowedSchemes.Count > 0)
-            {
-                _sanitizer.AllowedSchemes.Clear();
-                foreach (var scheme in settings.AllowedSchemes)
-                {
-                    _sanitizer.AllowedSchemes.Add(scheme);
-                }
-            }
-        }
+        // Use default configuration which is extremely secure and strips
+        // all JavaScript (script tags, onerror, onload, iframe, etc.)
     }
 
     public string Sanitize(string input)
@@ -68,9 +25,6 @@ public class HtmlSanitizerService : ISanitizerService
             return input;
         }
 
-        // Translate raw Markdown input to HTML strictly before running HtmlSanitizer
-        var html = Markdown.ToHtml(input, _pipeline);
-
-        return _sanitizer.Sanitize(html).Trim();
+        return _sanitizer.Sanitize(input);
     }
 }

src/NexusReader.Infrastructure/Services/LocalStorageService.cs

@@ -24,35 +24,24 @@ public class LocalStorageService : IStorageService
 
     public async Task<string> UploadFileAsync(Stream fileStream, string fileName, string contentType)
     {
-        var mediaFolder = Path.Combine(_environment.WebRootPath, "uploads");
-        var resolvedMediaFolder = Path.GetFullPath(mediaFolder);
-        var folderWithSeparator = resolvedMediaFolder.EndsWith(Path.DirectorySeparatorChar)
-            ? resolvedMediaFolder
-            : resolvedMediaFolder + Path.DirectorySeparatorChar;
+        var mediaFolder = Path.Combine(_environment.WebRootPath, "uploads", "media");
         
-        if (!Directory.Exists(resolvedMediaFolder))
+        if (!Directory.Exists(mediaFolder))
         {
-            Directory.CreateDirectory(resolvedMediaFolder);
+            Directory.CreateDirectory(mediaFolder);
         }
 
         // Clean file name to prevent path traversal issues
         var safeFileName = Path.GetFileName(fileName);
         var uniqueFileName = $"{Guid.NewGuid()}_{safeFileName}";
-        var filePath = Path.Combine(resolvedMediaFolder, uniqueFileName);
-        
-        // Guard against path traversal
-        var fullPath = Path.GetFullPath(filePath);
-        if (!fullPath.StartsWith(folderWithSeparator, StringComparison.OrdinalIgnoreCase))
-        {
-            throw new InvalidOperationException("Path traversal detected.");
-        }
+        var filePath = Path.Combine(mediaFolder, uniqueFileName);
 
-        using (var outputStream = new FileStream(fullPath, FileMode.Create))
+        using (var outputStream = new FileStream(filePath, FileMode.Create))
         {
             await fileStream.CopyToAsync(outputStream);
         }
 
         // Return the public web-relative URL
-        return $"/uploads/{uniqueFileName}";
+        return $"/uploads/media/{uniqueFileName}";
     }
 }

src/NexusReader.UI.Shared/Components/Atoms/NexusIcon.razor

@@ -101,11 +101,6 @@
                     <line x1="5" y1="12" x2="19" y2="12" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" />
                     <polyline points="12 5 19 12 12 19" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" />
             break;
-        case "edit":
-        case "edit-2":
-                    <path d="M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" />
-                    <path d="M18.5 2.5a2.121 2.121 0 1 1 3 3L12 15l-4 1 1-4 9.5-9.5z" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" />
-            break;
         case "log-out":
                     <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4M16 17l5-5-5-5M21 12H9" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" />
             break;

src/NexusReader.UI.Shared/Components/MarkdownEditor.razor

@@ -2,84 +2,20 @@
 @implements IAsyncDisposable
 @inject IJSRuntime JS
 @inject HttpClient Http
-@inject NexusReader.Application.Abstractions.Services.INativeStorageService StorageService
 
 <div class="markdown-editor-container" style="height: @Height; width: @Width;">
-    @if (_showRestorationBanner)
-    {
-        <div class="restoration-banner">
-            <span class="banner-text">You have unsaved changes from an interrupted session.</span>
-            <div class="banner-actions">
-                <button type="button" class="banner-btn restore-btn" @onclick="RestoreBackupAsync">Restore</button>
-                <button type="button" class="banner-btn dismiss-btn" @onclick="DismissBackupAsync">Dismiss</button>
-            </div>
-        </div>
-    }
-    else
-    {
-        <div @key="_editorRenderKey" id="@EditorId" class="milkdown-editor-wrapper"></div>
-
-        <div class="editor-footer">
-            <div class="status-indicator">
-                <span class="status-dot @StatusClass"></span>
-                <span class="status-text">@StatusText</span>
-            </div>
-            @if (ShowFetchButton)
-            {
-                <div class="editor-actions">
-                    <button type="button" @onclick="FetchContentAsync" class="nexus-btn">
-                        Fetch Markdown Content
-                    </button>
-                </div>
-            }
-        </div>
-    }
+    <div id="@EditorId" class="milkdown-editor-wrapper"></div>
+    <div class="editor-actions">
+        <button type="button" @onclick="FetchContentAsync" class="nexus-btn">
+            Fetch Markdown Content
+        </button>
+    </div>
 </div>
 
 @code {
-    private string EditorId { get; set; } = $"milkdown-editor-{Guid.NewGuid():N}";
-    private Guid _editorRenderKey = Guid.NewGuid();
-    private readonly CancellationTokenSource _cts = new();
+    private readonly string EditorId = $"milkdown-editor-{Guid.NewGuid():N}";
     private IJSObjectReference? _module;
     private DotNetObjectReference<MarkdownEditor>? _dotNetHelper;
-    private string? _lastInitializedEditorId;
-    private bool _disposed;
-
-    private enum SaveStatus
-    {
-        SavedToCloud,
-        Saving,
-        OfflineLocalBackup
-    }
-
-    private SaveStatus _status = SaveStatus.SavedToCloud;
-    private string _currentMarkdown = string.Empty;
-    private CancellationTokenSource? _debounceCts;
-    private readonly object _timerLock = new();
-
-    private bool _showRestorationBanner = false;
-    private NexusReader.Application.DTOs.Media.LocalBackupEnvelope? _pendingBackup;
-    private bool _hasRunStorageInit = false;
-    private bool _reinitializeEditor = false;
-
-    private string StatusClass => _status switch
-    {
-        SaveStatus.SavedToCloud => "saved",
-        SaveStatus.Saving => "saving",
-        SaveStatus.OfflineLocalBackup => "offline",
-        _ => "saved"
-    };
-
-    private string StatusText => _status switch
-    {
-        SaveStatus.SavedToCloud => "Saved to Cloud",
-        SaveStatus.Saving => "Saving...",
-        SaveStatus.OfflineLocalBackup => "Offline - Local Backup Only",
-        _ => "Saved to Cloud"
-    };
-
-    [Parameter]
-    public bool ShowFetchButton { get; set; } = true;
 
     [Parameter]
     public string InitialMarkdown { get; set; } = string.Empty;
@@ -93,218 +29,37 @@
     [Parameter]
     public string Width { get; set; } = "100%";
 
-    [Parameter]
-    public Guid ChapterId { get; set; } = Guid.Empty;
-
-    [Parameter]
-    public DateTime? ServerTimestamp { get; set; }
-
-    protected override async Task OnInitializedAsync()
-    {
-        await base.OnInitializedAsync();
-        // Sweep keys and check restoration on init
-        await RunStorageSweepAndRestorationCheckAsync();
-    }
-
-    private Guid _prevChapterId = Guid.Empty;
-
-    protected override async Task OnParametersSetAsync()
-    {
-        await base.OnParametersSetAsync();
-        if (ChapterId != Guid.Empty && ChapterId != _prevChapterId)
-        {
-            _prevChapterId = ChapterId;
-            _hasRunStorageInit = false;
-            
-            if (_module != null)
-            {
-                try
-                {
-                    await _module.InvokeVoidAsync("destroyEditor", EditorId);
-                }
-                catch (Exception ex)
-                {
-                    Console.WriteLine($"[MarkdownEditor] Error destroying old editor on chapter switch: {ex.Message}");
-                }
-            }
-
-            _reinitializeEditor = true;
-            EditorId = $"milkdown-editor-{Guid.NewGuid():N}";
-            _editorRenderKey = Guid.NewGuid();
-
-            await RunStorageSweepAndRestorationCheckAsync();
-        }
-    }
-
     protected override async Task OnAfterRenderAsync(bool firstRender)
     {
-        var shouldInit = (firstRender || _reinitializeEditor) && (EditorId != _lastInitializedEditorId);
-        if (shouldInit)
+        if (firstRender)
         {
-            _reinitializeEditor = false;
-            _lastInitializedEditorId = EditorId; // Set immediately before any async yield to prevent concurrent triggers
-
-            if (firstRender)
-            {
-                _dotNetHelper = DotNetObjectReference.Create(this);
-                // Retry if deferred during prerendering OnInitializedAsync
-                await RunStorageSweepAndRestorationCheckAsync();
-            }
-
+            _dotNetHelper = DotNetObjectReference.Create(this);
             try
             {
-                if (_module == null)
-                {
-                    _module = await JS.InvokeAsync<IJSObjectReference>(
-                        "import", 
-                        $"./_content/NexusReader.UI.Shared/js/milkdownWrapper.js?v={Guid.NewGuid():N}"
-                    );
-                }
+                // Import the isolated JavaScript module
+                _module = await JS.InvokeAsync<IJSObjectReference>(
+                    "import", 
+                    "./_content/NexusReader.UI.Shared/js/milkdownWrapper.js"
+                );
+
+                // Call the initialization function in the wrapper
                 await _module.InvokeVoidAsync("initEditor", EditorId, _dotNetHelper, InitialMarkdown);
             }
             catch (Exception ex)
             {
+                // Log the exception gracefully and do not crash the component
                 Console.WriteLine($"[MarkdownEditor] Error initializing Milkdown editor: {ex.Message}");
             }
         }
     }
 
-    private async Task RunStorageSweepAndRestorationCheckAsync()
-    {
-        if (_hasRunStorageInit) return;
-
-        try
-        {
-            _hasRunStorageInit = true;
-
-            // Import wrapper module if not already loaded to access helper
-            if (_module == null)
-            {
-                _module = await JS.InvokeAsync<IJSObjectReference>(
-                    "import", 
-                    $"./_content/NexusReader.UI.Shared/js/milkdownWrapper.js?v={Guid.NewGuid():N}"
-                );
-            }
-
-            // Sweep and filter backup keys defensively
-            var keys = await _module.InvokeAsync<List<string>>("getBackupKeys");
-            if (keys != null)
-            {
-                var now = DateTime.UtcNow;
-                foreach (var key in keys)
-                {
-                    // Strict defensive check before doing any JSON deserialization
-                    if (!key.StartsWith("nexus-bkp-")) continue;
-
-                    try
-                    {
-                        var backupResult = await StorageService.GetStringAsync(key);
-                        if (backupResult.IsSuccess && !string.IsNullOrEmpty(backupResult.Value))
-                        {
-                            var envelope = System.Text.Json.JsonSerializer.Deserialize<NexusReader.Application.DTOs.Media.LocalBackupEnvelope>(
-                                backupResult.Value, 
-                                NexusReader.Application.Common.AppJsonContext.Default.LocalBackupEnvelope
-                            );
-                            if (envelope != null)
-                            {
-                                // Remove expired backups
-                                if ((now - envelope.Timestamp).TotalDays > 7)
-                                {
-                                    await StorageService.RemoveAsync(key);
-                                    Console.WriteLine($"[MarkdownEditor] Boot-up Eviction: Deleted expired backup key {key}");
-                                }
-                            }
-                        }
-                    }
-                    catch (Exception ex)
-                    {
-                        Console.WriteLine($"[MarkdownEditor] Error sweeping key {key}: {ex.Message}");
-                    }
-                }
-            }
-
-            // Restoration guard for this specific Chapter ID
-            var currentBackupKey = $"nexus-bkp-{ChapterId}";
-            var currentBackupResult = await StorageService.GetStringAsync(currentBackupKey);
-            if (currentBackupResult.IsSuccess && !string.IsNullOrEmpty(currentBackupResult.Value))
-            {
-                var envelope = System.Text.Json.JsonSerializer.Deserialize<NexusReader.Application.DTOs.Media.LocalBackupEnvelope>(
-                    currentBackupResult.Value, 
-                    NexusReader.Application.Common.AppJsonContext.Default.LocalBackupEnvelope
-                );
-                if (envelope != null)
-                {
-                    var serverTime = ServerTimestamp ?? DateTime.MinValue;
-                    if (envelope.Timestamp > serverTime && envelope.MarkdownContent != InitialMarkdown)
-                    {
-                        _pendingBackup = envelope;
-                        _showRestorationBanner = true;
-                        StateHasChanged();
-                    }
-                }
-            }
-        }
-        catch (Exception ex)
-        {
-            _hasRunStorageInit = false; // Reset to allow retry on client render
-            Console.WriteLine($"[MarkdownEditor] Storage initialization deferred/failed: {ex.Message}");
-        }
-    }
-
-    private async Task RestoreBackupAsync()
-    {
-        if (_pendingBackup != null)
-        {
-            if (_module != null)
-            {
-                try
-                {
-                    // Prevent memory leak by cleaning up old instance in JS
-                    await _module.InvokeVoidAsync("destroyEditor", EditorId);
-                }
-                catch (Exception ex)
-                {
-                    Console.WriteLine($"[MarkdownEditor] Error destroying old editor during restore: {ex.Message}");
-                }
-            }
-
-            InitialMarkdown = _pendingBackup.MarkdownContent;
-            _showRestorationBanner = false;
-            _pendingBackup = null;
-
-            // Regenerate render key and ID to trigger clean Blazor element-level re-initialization
-            _reinitializeEditor = true;
-            EditorId = $"milkdown-editor-{Guid.NewGuid():N}";
-            _editorRenderKey = Guid.NewGuid();
-
-            // Trigger an immediate background API autosave to synchronize the database with the restored content
-            _ = TriggerAutosaveAsync(InitialMarkdown, _cts.Token);
-
-            StateHasChanged();
-        }
-    }
-
-    private async Task DismissBackupAsync()
-    {
-        _showRestorationBanner = false;
-        _pendingBackup = null;
-        try
-        {
-            await StorageService.RemoveAsync($"nexus-bkp-{ChapterId}");
-        }
-        catch (Exception ex)
-        {
-            Console.WriteLine($"[MarkdownEditor] Failed to dismiss backup from LocalStorage: {ex.Message}");
-        }
-        StateHasChanged();
-    }
-
-    public async Task FetchContentAsync()
+    private async Task FetchContentAsync()
     {
         if (_module is not null)
         {
             try
             {
+                // Retrieve the updated markdown from JS
                 var markdown = await _module.InvokeAsync<string>("getMarkdownContent", EditorId);
                 
                 if (OnSave.HasDelegate)
@@ -320,236 +75,51 @@
     }
 
     [JSInvokable]
-    public async Task OnEditorContentChanged(string currentMarkdown)
-    {
-        _currentMarkdown = currentMarkdown;
-
-        // Structured JSON Envelope Pattern
-        var envelope = new NexusReader.Application.DTOs.Media.LocalBackupEnvelope
-        {
-            ChapterId = ChapterId,
-            Timestamp = DateTime.UtcNow,
-            MarkdownContent = currentMarkdown
-        };
-
-        try
-        {
-            var envelopeJson = System.Text.Json.JsonSerializer.Serialize(
-                envelope, 
-                NexusReader.Application.Common.AppJsonContext.Default.LocalBackupEnvelope
-            );
-            await StorageService.SaveStringAsync($"nexus-bkp-{ChapterId}", envelopeJson);
-        }
-        catch (Exception ex)
-        {
-            Console.WriteLine($"[MarkdownEditor] Failed to save backup to LocalStorage: {ex.Message}");
-        }
-
-        // Status indicator to Offline - Local Backup Only
-        _status = SaveStatus.OfflineLocalBackup;
-        await InvokeAsync(StateHasChanged);
-
-        // Cancel pending timers thread-safely
-        CancellationTokenSource? ctsToCancel = null;
-        CancellationToken token;
-        lock (_timerLock)
-        {
-            if (_debounceCts != null)
-            {
-                ctsToCancel = _debounceCts;
-                _debounceCts = null;
-            }
-            _debounceCts = new CancellationTokenSource();
-            token = _debounceCts.Token; // Capture token synchronously under lock on UI thread
-        }
-
-        if (ctsToCancel != null)
-        {
-            try
-            {
-                await ctsToCancel.CancelAsync();
-                ctsToCancel.Dispose();
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"[MarkdownEditor] Error cancelling debounce timer: {ex.Message}");
-            }
-        }
-
-        // Start 5-second idle debounce timer
-        _ = Task.Run(async () =>
-        {
-            try
-            {
-                await Task.Delay(5000, token);
-                await TriggerAutosaveAsync(currentMarkdown, token);
-            }
-            catch (TaskCanceledException)
-            {
-                // Task cancelled on new keystroke
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"[MarkdownEditor] Debounce timer exception: {ex.Message}");
-            }
-        });
-    }
-
-    private async Task TriggerAutosaveAsync(string markdown, CancellationToken token)
-    {
-        if (token.IsCancellationRequested || _disposed) return;
-
-        _status = SaveStatus.Saving;
-        await InvokeAsync(StateHasChanged);
-
-        try
-        {
-            var request = new NexusReader.Application.DTOs.Media.AutosaveChapterRequest(markdown);
-            var response = await Http.PutAsJsonAsync(
-                $"/api/chapters/{ChapterId}/autosave", 
-                request, 
-                NexusReader.Application.Common.AppJsonContext.Default.AutosaveChapterRequest, 
-                token
-            );
-
-            if (_disposed) return;
-
-            if (response.IsSuccessStatusCode)
-            {
-                // Purge LocalStorage backup key on HTTP success
-                await StorageService.RemoveAsync($"nexus-bkp-{ChapterId}");
-                _status = SaveStatus.SavedToCloud;
-            }
-            else
-            {
-                _status = SaveStatus.OfflineLocalBackup;
-                var errorMsg = await response.Content.ReadAsStringAsync(token);
-                Console.WriteLine($"[MarkdownEditor] Autosave HTTP error: {response.StatusCode} - {errorMsg}");
-            }
-        }
-        catch (Exception ex)
-        {
-            if (_disposed) return;
-            _status = SaveStatus.OfflineLocalBackup;
-            Console.WriteLine($"[MarkdownEditor] Autosave HTTP exception: {ex.Message}");
-        }
-
-        if (_disposed) return;
-        await InvokeAsync(StateHasChanged);
-    }
-
-    [JSInvokable]
-    public async Task<string> UploadImageFromJs(string filename, string contentType, IJSStreamReference streamRef)
+    public async Task<string> UploadImageFromJs(string filename, string contentType, byte[] fileBytes)
     {
         try
         {
-            const long maxFileSize = 5 * 1024 * 1024; // 5MB limit
-            using var stream = await streamRef.OpenReadStreamAsync(maxFileSize, _cts.Token);
-            using var memoryStream = new MemoryStream();
-            await stream.CopyToAsync(memoryStream, _cts.Token);
-            var fileBytes = memoryStream.ToArray();
-
             using var content = new MultipartFormDataContent();
-            using var fileContent = new ByteArrayContent(fileBytes);
+            var fileContent = new ByteArrayContent(fileBytes);
             fileContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);
             content.Add(fileContent, "file", filename);
 
-            var response = await Http.PostAsync("/api/media/upload", content, _cts.Token);
+            var response = await Http.PostAsync("/api/media/upload", content);
             if (response.IsSuccessStatusCode)
             {
                 var result = await response.Content.ReadFromJsonAsync<NexusReader.Application.DTOs.Media.UploadResultDto>(
-                    NexusReader.Application.Common.AppJsonContext.Default.UploadResultDto, _cts.Token);
-                return result?.Url ?? "https://placehold.co/600x400?text=Upload+Failed";
+                    NexusReader.Application.Common.AppJsonContext.Default.UploadResultDto);
+                return result?.Url ?? string.Empty;
             }
             else
             {
-                var errorMsg = await response.Content.ReadAsStringAsync(_cts.Token);
+                var errorMsg = await response.Content.ReadAsStringAsync();
                 Console.WriteLine($"[MarkdownEditor] Image upload failed: {response.StatusCode} - {errorMsg}");
-                return "https://placehold.co/600x400?text=Upload+Failed";
+                return string.Empty;
             }
         }
         catch (Exception ex)
         {
             Console.WriteLine($"[MarkdownEditor] Exception during image upload: {ex.Message}");
-            return "https://placehold.co/600x400?text=Upload+Failed";
+            return string.Empty;
         }
     }
 
     public async ValueTask DisposeAsync()
     {
-        _disposed = true;
-        try
-        {
-            _cts.Cancel();
-            _cts.Dispose();
-        }
-        catch
-        {
-            // Fail silently
-        }
-
-        CancellationTokenSource? ctsToCancel = null;
-        lock (_timerLock)
-        {
-            if (_debounceCts != null)
-            {
-                ctsToCancel = _debounceCts;
-                _debounceCts = null;
-            }
-        }
-
-        if (ctsToCancel != null)
-        {
-            try
-            {
-                ctsToCancel.Cancel();
-                ctsToCancel.Dispose();
-            }
-            catch
-            {
-                // Fail silently
-            }
-        }
-
-        try
-        {
-            // Always try to destroy via global window registration first to handle null _module
-            await JS.InvokeVoidAsync("milkdownWrapper.destroyEditor", EditorId);
-        }
-        catch
-        {
-            // Fallback to module if global is not set
-            if (_module is not null)
-            {
-                try
-                {
-                    await _module.InvokeVoidAsync("destroyEditor", EditorId);
-                }
-                catch
-                {
-                    // Fail silently
-                }
-            }
-        }
-
         try
         {
             if (_module is not null)
             {
+                // Clean up the JS editor instance to prevent memory leaks
+                await _module.InvokeVoidAsync("destroyEditor", EditorId);
                 await _module.DisposeAsync();
             }
         }
-        catch (JSDisconnectedException)
-        {
-            // Fail silently during circuit disconnection
-        }
-        catch (ObjectDisposedException)
-        {
-            // Fail silently if JS runtime/module is already disposed
-        }
         catch (Exception ex)
         {
-            Console.WriteLine($"[MarkdownEditor] Unexpected error during JS cleanup: {ex.Message}");
+            // Fail silently during page navigation/webview closures to avoid noisy logs
+            Console.WriteLine($"[MarkdownEditor] Error during JS cleanup: {ex.Message}");
         }
         finally
         {

src/NexusReader.UI.Shared/Components/MarkdownEditor.razor.css

@@ -79,119 +79,3 @@
     filter: brightness(1.1);
     box-shadow: 0 4px 15px var(--nexus-primary-glow);
 }
-
-.nexus-btn:focus-visible {
-    outline: 2px solid var(--accent);
-    outline-offset: 2px;
-}
-
-/* Stateful Status Indicator Footer */
-.editor-footer {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 0.5rem 1rem;
-    background: var(--bg-surface-low, rgba(255, 255, 255, 0.02));
-    border-radius: var(--radius-sm, 6px);
-    border: 1px solid var(--border);
-    margin-top: -0.5rem;
-}
-
-.status-indicator {
-    display: inline-flex;
-    align-items: center;
-    gap: 0.5rem;
-    font-size: 0.8rem;
-    font-weight: 500;
-    color: var(--text-muted, #888888);
-}
-
-.status-dot {
-    width: 8px;
-    height: 8px;
-    border-radius: 50%;
-    display: inline-block;
-    position: relative;
-    box-shadow: 0 0 8px currentColor;
-}
-
-.status-dot.saved {
-    color: #10B981; /* Green */
-    background-color: #10B981;
-}
-
-.status-dot.saving {
-    color: #F59E0B; /* Amber */
-    background-color: #F59E0B;
-    animation: status-pulse 1s infinite alternate;
-}
-
-.status-dot.offline {
-    color: #EF4444; /* Red */
-    background-color: #EF4444;
-}
-
-/* Orange Restoration Warning Banner */
-.restoration-banner {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 0.75rem 1.25rem;
-    background: rgba(245, 158, 11, 0.1);
-    border: 1px solid rgba(245, 158, 11, 0.3);
-    border-radius: var(--radius-md, 8px);
-    color: var(--text-main);
-    font-size: 0.9rem;
-    gap: 1rem;
-    margin-bottom: 0.75rem;
-    animation: banner-fadeIn 0.3s ease-out;
-}
-
-.banner-text {
-    font-weight: 500;
-}
-
-.banner-actions {
-    display: flex;
-    gap: 0.75rem;
-}
-
-.banner-btn {
-    padding: 6px 12px;
-    border-radius: var(--radius-sm, 4px);
-    font-weight: 600;
-    font-size: 0.8rem;
-    cursor: pointer;
-    border: none;
-    transition: all 0.2s ease;
-}
-
-.restore-btn {
-    background: #F59E0B;
-    color: #000;
-}
-
-.restore-btn:hover {
-    background: #D97706;
-    transform: translateY(-1px);
-}
-
-.dismiss-btn {
-    background: transparent;
-    border: 1px solid var(--border);
-    color: var(--text-main);
-}
-
-.dismiss-btn:hover {
-    background: rgba(255, 255, 255, 0.05);
-}
-
-@keyframes status-pulse {
-    0% { opacity: 0.4; transform: scale(0.9); }
-    100% { opacity: 1; transform: scale(1.1); }
-}
-
-@keyframes banner-fadeIn {
-    from { opacity: 0; transform: translateY(-5px); }
-    to { opacity: 1; transform: translateY(0); }
-}

src/NexusReader.UI.Shared/Components/Organisms/ContextualRecommendationsWidget.razor.css

@@ -5,7 +5,6 @@
 .recommendations-panel {
     width: 100%;
     padding: 1.75rem;
-    margin-top: 2.5rem;
     background: var(--nexus-surface, #1a1a1e);
     border: 1px solid var(--nexus-border, rgba(255, 255, 255, 0.05));
     border-radius: 12px;

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

@@ -95,11 +95,11 @@
                         </div>
                         <span class="nav-text">Koncentry</span>
                     </NavLink>
-                    <NavLink class="nav-item" href="/creator" @onclick="CloseMobileMenu" title="Kreator" aria-label="Kreator">
+                    <NavLink class="nav-item" href="/dev/creator-test" @onclick="CloseMobileMenu" title="Kreator (Dev)" aria-label="Kreator (Dev)">
                         <div class="nav-icon">
                             <NexusIcon Name="edit" Size="20" />
                         </div>
-                        <span class="nav-text">Kreator</span>
+                        <span class="nav-text">Kreator (Dev)</span>
                     </NavLink>
                 </nav>
 
@@ -183,11 +183,10 @@
         InvokeAsync(StateHasChanged);
     }
 
-    protected override async Task OnAfterRenderAsync(bool firstRender)
+    protected override void OnAfterRender(bool firstRender)
     {
         if (firstRender)
         {
-            await ThemeService.InitializeAsync();
             _isFullyLoaded = true;
             StateHasChanged();
         }

src/NexusReader.UI.Shared/Layout/MainHubLayout.razor.css

@@ -354,8 +354,6 @@
 /* --- Desktop Sidebar: warm paper shadow --- */
 .theme-light ::deep .hub-sidebar {
     box-shadow: 4px 0 20px rgba(139, 130, 115, 0.08);
-    background: var(--bg-surface) !important;
-    border-right: 1px solid var(--border) !important;
 }
 
 /* --- Logo icon: remove neon glow --- */

src/NexusReader.UI.Shared/Pages/CreatorDashboard.razor

@@ -1,542 +0,0 @@
-@page "/creator"
-@attribute [Authorize]
-@using System.Net.Http.Json
-@using Microsoft.Extensions.Logging
-@using System.ComponentModel.DataAnnotations
-@using NexusReader.Application.DTOs.Creator
-@inject HttpClient Http
-@inject NavigationManager NavigationManager
-@inject ILogger<CreatorDashboard> Logger
-
-<PageTitle>Creator Dashboard | Nexus Reader</PageTitle>
-
-<div class="dashboard-container">
-    <header class="dashboard-header">
-        <div class="header-visual">
-            <h1 class="dashboard-title">Panel Autora</h1>
-            <p class="subtitle">Monitoruj zaangażowanie czytelników i publikuj wersje zamrożone z poziomu kontroli wersji.</p>
-        </div>
-    </header>
-
-    <main class="dashboard-content">
-        <!-- Metrics Section -->
-        <section class="metrics-grid">
-            @if (_isLoading)
-            {
-                @for (int i = 0; i < 4; i++)
-                {
-                    <div class="metric-card skeleton-card">
-                        <div class="skeleton-line label"></div>
-                        <div class="skeleton-line value"></div>
-                    </div>
-                }
-            }
-            else if (_dashboardData != null)
-            {
-                <div class="metric-card glass-panel">
-                    <span class="metric-label">Całkowite Odczyty</span>
-                    <h2 class="metric-value">@_dashboardData.Metrics.TotalReads</h2>
-                    <div class="metric-trend positive">
-                        <span class="trend-icon">↑</span>
-                        <span class="trend-text">System stabilny</span>
-                    </div>
-                </div>
-
-                <div class="metric-card glass-panel">
-                    <span class="metric-label">Średni Czas Czytania</span>
-                    <h2 class="metric-value">@_dashboardData.Metrics.AvgReadTimeMinutes min</h2>
-                    <div class="metric-trend neutral">
-                        <span class="trend-icon">→</span>
-                        <span class="trend-text">Na rozdział</span>
-                    </div>
-                </div>
-
-                <div class="metric-card glass-panel">
-                    <div class="metric-label-container">
-                        <span class="metric-label">Aktywni Czytelnicy</span>
-                        <div class="pulse-indicator">
-                            <span class="pulse-dot"></span>
-                            <span class="pulse-text">Live Now</span>
-                        </div>
-                    </div>
-                    <h2 class="metric-value">@_dashboardData.Metrics.ActiveReaders</h2>
-                    <div class="metric-trend positive">
-                        <span class="trend-icon">↑</span>
-                        <span class="trend-text">Ruch w czasie rzeczywistym</span>
-                    </div>
-                </div>
-
-                <div class="metric-card glass-panel">
-                    <span class="metric-label">Przychód Gross</span>
-                    <h2 class="metric-value">@_dashboardData.Metrics.GrossRevenue.ToString("C2")</h2>
-                    <div class="metric-trend positive">
-                        <span class="trend-icon">↑</span>
-                        <span class="trend-text">Rozliczenia w toku</span>
-                    </div>
-                </div>
-            }
-        </section>
-
-        <!-- Publication Cards Grid Section -->
-        <section class="publications-section">
-            <div class="section-header">
-                <h2>Twoje Publikacje</h2>
-                <button type="button" class="btn-nexus primary glow-btn" @onclick="OpenCreateBookModal">
-                    [ + Nowa Publikacja ]
-                </button>
-            </div>
-
-            @if (_isLoading)
-            {
-                <div class="books-grid">
-                    @for (int i = 0; i < 3; i++)
-                    {
-                        <div class="book-card skeleton-card">
-                            <div class="skeleton-card-header"></div>
-                            <div class="skeleton-line title"></div>
-                            <div class="skeleton-line metadata"></div>
-                            <div class="skeleton-card-actions"></div>
-                        </div>
-                    }
-                </div>
-            }
-            else if (_dashboardData == null || !_dashboardData.Books.Any())
-            {
-                <div class="empty-state glass-panel">
-                    <div class="empty-icon">
-                        <svg width="64" height="64" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
-                            <path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"></path>
-                            <path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"></path>
-                        </svg>
-                    </div>
-                    <h3>Brak publikacji</h3>
-                    <p>Nie utworzyłeś jeszcze żadnych książek do autorskiej edycji.</p>
-                    <button type="button" class="btn-nexus primary glow-btn" style="margin-top: 1.5rem;" @onclick="OpenCreateBookModal">
-                        [ + Nowa Publikacja ]
-                    </button>
-                </div>
-            }
-            else
-            {
-                <div class="books-grid">
-                    @foreach (var book in _dashboardData.Books)
-                    {
-                        <div class="book-card glass-panel">
-                            <div class="card-glow"></div>
-                            <div class="book-card-header">
-                                <h3 class="book-title" title="@book.Title">@book.Title</h3>
-                                <div class="badges-row">
-                                    @if (book.LivePublishedRevision != null)
-                                    {
-                                        <span class="badge badge-published" title="Opublikowana wersja dostępna dla czytelników">
-                                            Live @book.LivePublishedRevision.VersionString
-                                        </span>
-                                    }
-                                    @if (book.CurrentDraftRevision != null)
-                                    {
-                                        <span class="badge badge-draft pulsing" title="Szkic roboczy z nieopublikowanymi zmianami">
-                                            Szkic
-                                        </span>
-                                    }
-                                </div>
-                            </div>
-
-                            <div class="book-telemetry">
-                                <div class="telemetry-item">
-                                    <span class="telemetry-label">Słowa:</span>
-                                    <span class="telemetry-value">@book.WordCount.ToString("N0")</span>
-                                </div>
-                                <div class="telemetry-item">
-                                    <span class="telemetry-label">Wyświetlenia:</span>
-                                    <span class="telemetry-value">@book.AggregatedReads.ToString("N0")</span>
-                                </div>
-                            </div>
-
-                            <div class="book-card-actions">
-                                <button type="button" class="btn-nexus secondary" @onclick="() => NavigateToEditor(book)">
-                                    Edytuj szkic
-                                </button>
-                                <button type="button" class="btn-nexus primary glow-btn" @onclick="() => OpenPublishModal(book)">
-                                    Publikuj
-                                </button>
-                                <button type="button" class="btn-nexus link-btn" @onclick="() => OpenRevisionsModalAsync(book)">
-                                    Rejestr zmian
-                                </button>
-                            </div>
-                        </div>
-                    }
-                </div>
-            }
-        </section>
-    </main>
-</div>
-
-<!-- Defensively-Scoped Version Publish Modal -->
-@if (_isPublishModalOpen && _activePublishBookId.HasValue)
-{
-    <div class="modal-backdrop" @onclick="ClosePublishModal">
-        <div class="modal-content glass-panel" @onclick:stopPropagation>
-            <div class="modal-header">
-                <h3>Publikowanie Nowej Wersji</h3>
-                <button class="close-btn" @onclick="ClosePublishModal">&times;</button>
-            </div>
-            <div class="modal-body">
-                <p>Zamrażasz obecny szkic książki <strong>@_activePublishBookTitle</strong> jako nową wersję publiczną.</p>
-                <div class="form-group">
-                    <label for="versionInput">Sygnatura Wersji (np. v1.0.0)</label>
-                    <input id="versionInput" type="text" class="form-control" @bind="_customVersionString" @bind:event="oninput" placeholder="Wpisz tag wersji..." />
-                </div>
-                @if (!string.IsNullOrEmpty(_errorMessage))
-                {
-                    <div class="error-banner">@_errorMessage</div>
-                }
-            </div>
-            <div class="modal-footer">
-                <button type="button" class="btn-nexus secondary" @onclick="ClosePublishModal">Anuluj</button>
-                <button type="button" class="btn-nexus primary glow-btn" @onclick="SubmitPublishVersionAsync" disabled="@_isSubmitting">
-                    @(_isSubmitting ? "Wysyłanie..." : "Zatwierdź wersję")
-                </button>
-            </div>
-        </div>
-    </div>
-}
-
-<!-- Manage Revisions Modal -->
-@if (_isRevisionsModalOpen && _activeRevisionsBookId.HasValue)
-{
-    <div class="modal-backdrop" @onclick="CloseRevisionsModal">
-        <div class="modal-content glass-panel" @onclick:stopPropagation>
-            <div class="modal-header">
-                <h3>Rejestr Rewizji: @_activeRevisionsBookTitle</h3>
-                <button class="close-btn" @onclick="CloseRevisionsModal">&times;</button>
-            </div>
-            <div class="modal-body">
-                @if (_revisionsLoading)
-                {
-                    <div class="spinner-container">
-                        <div class="spinner-glow small"></div>
-                        <span>Wczytywanie historii...</span>
-                    </div>
-                }
-                else if (_revisionsList == null || !_revisionsList.Any())
-                {
-                    <p class="empty-revisions">Brak zarejestrowanych rewizji.</p>
-                }
-                else
-                {
-                    <div class="revisions-list">
-                        @foreach (var revision in _revisionsList)
-                        {
-                            <div class="revision-item">
-                                <div class="revision-header">
-                                    <span class="revision-tag @(revision.IsPublished ? "published" : "draft")">
-                                        @(revision.IsPublished ? revision.VersionString : "Szkic roboczy")
-                                    </span>
-                                    <span class="revision-date">
-                                        @(revision.PublishedAt.HasValue ? revision.PublishedAt.Value.ToString("g") : revision.CreatedAt.ToString("g"))
-                                    </span>
-                                </div>
-                                <div class="revision-meta">
-                                    <span>Utworzono: @revision.CreatedAt.ToString("yyyy-MM-dd HH:mm")</span>
-                                </div>
-                            </div>
-                        }
-                    </div>
-                }
-            </div>
-            <div class="modal-footer">
-                <button type="button" class="btn-nexus secondary" @onclick="CloseRevisionsModal">Zamknij</button>
-            </div>
-        </div>
-    </div>
-}
-
-<!-- Create Book Modal -->
-@if (_isCreateBookModalOpen)
-{
-    <div class="modal-backdrop" @onclick="CloseCreateBookModal">
-        <div class="modal-content glass-panel" @onclick:stopPropagation>
-            <div class="modal-header">
-                <h2>Nowa Publikacja</h2>
-                <button class="close-btn" @onclick="CloseCreateBookModal">
-                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="18" y1="6" x2="6" y2="18"></line><line x1="6" y1="6" x2="18" y2="18"></line></svg>
-                </button>
-            </div>
-            <EditForm Model="_createBookModel" OnValidSubmit="SubmitCreateBookAsync">
-                <DataAnnotationsValidator />
-                <div class="modal-body">
-                    <div class="creator-layout">
-                        <!-- Book Cover Preview -->
-                        <div class="cover-preview creator-cover">
-                            <div class="cover-mockup-design">
-                                <div class="cover-accent-line"></div>
-                                <div class="cover-main-content">
-                                    <span class="cover-title-text">
-                                        @(string.IsNullOrWhiteSpace(_createBookModel.Title) ? "Tytuł Książki" : _createBookModel.Title)
-                                    </span>
-                                    <span class="cover-author-text">
-                                        Szkic roboczy
-                                    </span>
-                                </div>
-                                <div class="cover-logo-container">
-                                    <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polygon points="5 3 19 12 5 21 5 3"></polygon></svg>
-                                    <span class="cover-brand">Nexus</span>
-                                </div>
-                            </div>
-                        </div>
-
-                        <!-- Form inputs -->
-                        <div class="creator-form-inputs">
-                            <div class="form-group">
-                                <label for="newBookTitle">Tytuł Książki</label>
-                                <InputText id="newBookTitle" class="form-input" @bind-Value="_createBookModel.Title" placeholder="Wpisz tytuł książki..." />
-                                <ValidationMessage For="@(() => _createBookModel.Title)" class="validation-message" />
-                            </div>
-                            <div class="form-group">
-                                <label for="newBookDescription">Opis (opcjonalny)</label>
-                                <InputTextArea id="newBookDescription" class="form-input" @bind-Value="_createBookModel.Description" rows="3" placeholder="Wpisz krótki opis książki..." />
-                                <ValidationMessage For="@(() => _createBookModel.Description)" class="validation-message" />
-                            </div>
-                            @if (!string.IsNullOrEmpty(_createBookError))
-                            {
-                                <div class="error-banner">@_createBookError</div>
-                            }
-                        </div>
-                    </div>
-                </div>
-                <div class="actions">
-                    <button type="button" class="btn-nexus secondary" @onclick="CloseCreateBookModal">Anuluj</button>
-                    <button type="submit" class="btn-nexus primary glow-btn" disabled="@_isCreatingBook">
-                        @(_isCreatingBook ? "Tworzenie..." : "Utwórz książkę")
-                    </button>
-                </div>
-            </EditForm>
-        </div>
-    </div>
-}
-
-@code {
-    private bool _isLoading = true;
-    private CreatorDashboardDataDto? _dashboardData;
-
-    // Create Book Model and state
-    private bool _isCreateBookModalOpen;
-    private CreateBookModel _createBookModel = new();
-    private bool _isCreatingBook;
-    private string? _createBookError;
-
-    // Defensively-scoped state variables for modal isolation
-    private bool _isPublishModalOpen;
-    private Guid? _activePublishBookId;
-    private string _activePublishBookTitle = string.Empty;
-    private string _customVersionString = string.Empty;
-    private bool _isSubmitting;
-    private string? _errorMessage;
-
-    // Revisions modal state variables
-    private bool _isRevisionsModalOpen;
-    private Guid? _activeRevisionsBookId;
-    private string _activeRevisionsBookTitle = string.Empty;
-    private bool _revisionsLoading;
-    private List<CreatorBookRevisionDto> _revisionsList = new();
-
-    protected override async Task OnAfterRenderAsync(bool firstRender)
-    {
-        if (firstRender)
-        {
-            await LoadDashboardDataAsync();
-        }
-    }
-
-    private async Task LoadDashboardDataAsync()
-    {
-        _isLoading = true;
-        StateHasChanged();
-
-        try
-        {
-            _dashboardData = await Http.GetFromJsonAsync<CreatorDashboardDataDto>("api/creator/dashboard");
-        }
-        catch (Exception ex)
-        {
-            Logger.LogError(ex, "Error loading creator dashboard data.");
-        }
-        finally
-        {
-            _isLoading = false;
-            StateHasChanged();
-        }
-    }
-
-    private void NavigateToEditor(CreatorBookDto book)
-    {
-        if (book.FirstChapterId.HasValue)
-        {
-            NavigationManager.NavigateTo($"/creator/edit/{book.Id}/{book.FirstChapterId.Value}");
-        }
-        else
-        {
-            NavigationManager.NavigateTo($"/creator/edit/{book.Id}");
-        }
-    }
-
-    private void OpenPublishModal(CreatorBookDto book)
-    {
-        // Explicitly lock context boundaries to the selected book
-        _activePublishBookId = book.Id;
-        _activePublishBookTitle = book.Title;
-        _customVersionString = "v1.0.0";
-        _errorMessage = null;
-        _isPublishModalOpen = true;
-    }
-
-    private void ClosePublishModal()
-    {
-        _isPublishModalOpen = false;
-        _activePublishBookId = null;
-        _activePublishBookTitle = string.Empty;
-        _customVersionString = string.Empty;
-        _errorMessage = null;
-    }
-
-    private async Task SubmitPublishVersionAsync()
-    {
-        if (!_activePublishBookId.HasValue || string.IsNullOrWhiteSpace(_customVersionString))
-        {
-            return;
-        }
-
-        _isSubmitting = true;
-        _errorMessage = null;
-        StateHasChanged();
-
-        try
-        {
-            // Explicitly lock the parameters during sending execution
-            var bookId = _activePublishBookId.Value;
-            var response = await Http.PostAsync($"api/creator/books/{bookId}/publish?version={Uri.EscapeDataString(_customVersionString)}", null);
-
-            if (response.IsSuccessStatusCode)
-            {
-                ClosePublishModal();
-                await LoadDashboardDataAsync();
-            }
-            else
-            {
-                _errorMessage = await response.Content.ReadAsStringAsync();
-                if (string.IsNullOrWhiteSpace(_errorMessage))
-                {
-                    _errorMessage = "Publish version endpoint returned an error.";
-                }
-            }
-        }
-        catch (Exception ex)
-        {
-            Logger.LogError(ex, "Exception thrown during publication.");
-            _errorMessage = $"Mutation failed: {ex.Message}";
-        }
-        finally
-        {
-            _isSubmitting = false;
-            StateHasChanged();
-        }
-    }
-
-    private async Task OpenRevisionsModalAsync(CreatorBookDto book)
-    {
-        _activeRevisionsBookId = book.Id;
-        _activeRevisionsBookTitle = book.Title;
-        _revisionsList = new();
-        _revisionsLoading = true;
-        _isRevisionsModalOpen = true;
-        StateHasChanged();
-
-        try
-        {
-            _revisionsList = await Http.GetFromJsonAsync<List<CreatorBookRevisionDto>>($"api/creator/books/{book.Id}/revisions") ?? new();
-        }
-        catch (Exception ex)
-        {
-            Logger.LogError(ex, "Failed to load revisions.");
-        }
-        finally
-        {
-            _revisionsLoading = false;
-            StateHasChanged();
-        }
-    }
-
-    private void CloseRevisionsModal()
-    {
-        _isRevisionsModalOpen = false;
-        _activeRevisionsBookId = null;
-        _activeRevisionsBookTitle = string.Empty;
-        _revisionsList.Clear();
-    }
-
-    private void OpenCreateBookModal()
-    {
-        _createBookModel = new CreateBookModel();
-        _createBookError = null;
-        _isCreateBookModalOpen = true;
-    }
-
-    private void CloseCreateBookModal()
-    {
-        _isCreateBookModalOpen = false;
-        _createBookError = null;
-    }
-
-    private async Task SubmitCreateBookAsync()
-    {
-        _isCreatingBook = true;
-        _createBookError = null;
-        StateHasChanged();
-
-        try
-        {
-            var response = await Http.PostAsJsonAsync("api/creator/books", _createBookModel);
-            if (response.IsSuccessStatusCode)
-            {
-                var result = await response.Content.ReadFromJsonAsync<CreateBookResponseDto>();
-                if (result != null)
-                {
-                    // Reset modal state BEFORE routing to prevent it lingering in the DOM tree
-                    _isCreateBookModalOpen = false;
-                    _createBookError = null;
-                    StateHasChanged();
-
-                    NavigationManager.NavigateTo($"/creator/edit/{result.BookId}");
-                }
-                else
-                {
-                    _createBookError = "Otrzymano nieprawidłową odpowiedź z serwera.";
-                }
-            }
-            else
-            {
-                var errorMsg = await response.Content.ReadAsStringAsync();
-                _createBookError = !string.IsNullOrWhiteSpace(errorMsg) ? errorMsg : "Wystąpił błąd podczas tworzenia książki.";
-            }
-        }
-        catch (Exception ex)
-        {
-            Logger.LogError(ex, "Błąd podczas tworzenia książki.");
-            _createBookError = $"Krytyczny błąd: {ex.Message}";
-        }
-        finally
-        {
-            _isCreatingBook = false;
-            StateHasChanged();
-        }
-    }
-
-    public class CreateBookModel
-    {
-        [Required(ErrorMessage = "Tytuł książki jest wymagany.")]
-        [StringLength(255, ErrorMessage = "Tytuł książki nie może przekraczać 255 znaków.")]
-        public string Title { get; set; } = string.Empty;
-
-        public string? Description { get; set; }
-    }
-}

src/NexusReader.UI.Shared/Pages/CreatorDashboard.razor.css

@@ -1,763 +0,0 @@
-.dashboard-container {
-    min-height: 100%;
-    display: flex;
-    flex-direction: column;
-    animation: fade-in 0.6s cubic-bezier(0.4, 0, 0.2, 1);
-}
-
-@keyframes fade-in {
-    from { opacity: 0; transform: translateY(15px); }
-    to { opacity: 1; transform: translateY(0); }
-}
-
-/* --- Dashboard Header --- */
-.dashboard-header {
-    padding: 3rem 2rem 2rem;
-    background: var(--bg-surface);
-    border-bottom: 1px solid var(--border);
-    position: relative;
-    overflow: hidden;
-}
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-.dashboard-title {
-    font-family: var(--nexus-font-serif, serif);
-    font-size: 2.25rem;
-    font-weight: 700;
-    color: var(--text-main);
-    margin-bottom: 0.5rem;
-}
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-.subtitle {
-    font-size: 0.95rem;
-    color: var(--text-muted);
-    max-width: 600px;
-    line-height: 1.5;
-}
-
-/* --- Main Content Layout --- */
-.dashboard-content {
-    padding: 2.5rem 2rem;
-    max-width: 1200px;
-    margin: 0 auto;
-    width: 100%;
-    display: flex;
-    flex-direction: column;
-    gap: 3rem;
-}
-
-/* --- Metrics Grid --- */
-.metrics-grid {
-    display: grid;
-    grid-template-columns: repeat(1, minmax(0, 1fr));
-    gap: 1.5rem;
-}
-
-@media (min-width: 768px) {
-    .metrics-grid {
-        grid-template-columns: repeat(2, minmax(0, 1fr));
-    }
-}
-
-@media (min-width: 1024px) {
-    .metrics-grid {
-        grid-template-columns: repeat(4, minmax(0, 1fr));
-    }
-}
-
-.metric-card {
-    display: flex;
-    flex-direction: column;
-    gap: 0.5rem;
-    padding: 1.5rem;
-    position: relative;
-}
-
-.metric-label-container {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-}
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-.metric-label {
-    font-size: 0.85rem;
-    font-weight: 500;
-    color: var(--text-muted);
-    text-transform: uppercase;
-    letter-spacing: 0.05em;
-}
-
-.metric-value {
-    font-size: 1.85rem;
-    font-weight: 700;
-    color: var(--text-main);
-    margin: 0.25rem 0;
-}
-
-.metric-trend {
-    display: flex;
-    align-items: center;
-    gap: 0.25rem;
-    font-size: 0.75rem;
-}
-
-.metric-trend.positive {
-    color: var(--nexus-neon);
-}
-
-.metric-trend.neutral {
-    color: var(--text-muted);
-}
-
-/* Glassmorphism Panel styles */
-.glass-panel {
-    background: var(--bg-surface);
-    border: 1px solid var(--border);
-    border-radius: 12px;
-    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
-    backdrop-filter: blur(10px);
-    -webkit-backdrop-filter: blur(10px);
-    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s ease, box-shadow 0.2s ease;
-}
-
-.glass-panel:hover {
-    transform: translateY(-4px);
-    border-color: var(--accent);
-    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.06);
-}
-
-/* --- Pulsing indicator --- */
-.pulse-indicator {
-    display: flex;
-    align-items: center;
-    gap: 0.4rem;
-    background: rgba(255, 68, 68, 0.1);
-    border: 1px solid rgba(255, 68, 68, 0.3);
-    border-radius: 100px;
-    padding: 2px 8px;
-}
-
-.pulse-dot {
-    width: 6px;
-    height: 6px;
-    background-color: #ff4444;
-    border-radius: 50%;
-    animation: beacon-pulse 1.8s cubic-bezier(0.4, 0, 0.6, 1) infinite;
-}
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-.pulse-text {
-    font-size: 0.65rem;
-    font-weight: 700;
-    color: #ff4444;
-    text-transform: uppercase;
-    letter-spacing: 0.05em;
-}
-
-@keyframes beacon-pulse {
-    0%, 100% { opacity: 1; transform: scale(1); }
-    50% { opacity: 0.4; transform: scale(1.3); }
-}
-
-/* --- Publications Section --- */
-.publications-section {
-    display: flex;
-    flex-direction: column;
-    gap: 1.5rem;
-}
-
-.section-header h2 {
-    font-family: var(--nexus-font-serif, serif);
-    font-size: 1.5rem;
-    font-weight: 600;
-    color: var(--text-main);
-    margin: 0;
-}
-
-/* --- Publication Grid & Cards --- */
-.books-grid {
-    display: grid;
-    grid-template-columns: repeat(1, minmax(0, 1fr));
-    gap: 1.5rem;
-}
-
-@media (min-width: 768px) {
-    .books-grid {
-        grid-template-columns: repeat(2, minmax(0, 1fr));
-    }
-}
-
-@media (min-width: 1024px) {
-    .books-grid {
-        grid-template-columns: repeat(3, minmax(0, 1fr));
-    }
-}
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-.book-card {
-    display: flex;
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-    justify-content: space-between;
-    gap: 1.5rem;
-    padding: 1.5rem;
-    position: relative;
-    overflow: hidden;
-}
-
-.card-glow {
-    position: absolute;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 3px;
-    background: linear-gradient(90deg, var(--border), var(--accent), var(--border));
-    opacity: 0.4;
-}
-
-.book-card:hover .card-glow {
-    opacity: 1;
-    background: linear-gradient(90deg, var(--accent), var(--nexus-neon), var(--accent));
-}
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-.book-card-header {
-    display: flex;
-    flex-direction: column;
-    gap: 0.75rem;
-}
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-.book-title {
-    font-size: 1.15rem;
-    font-weight: 600;
-    color: var(--text-main);
-    margin: 0;
-    white-space: nowrap;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.badges-row {
-    display: flex;
-    flex-wrap: wrap;
-    gap: 0.5rem;
-}
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-.badge {
-    padding: 0.25rem 0.6rem;
-    border-radius: 6px;
-    font-size: 0.7rem;
-    font-weight: 700;
-    text-transform: uppercase;
-    letter-spacing: 0.05em;
-    border: 1px solid transparent;
-}
-
-.badge-published {
-    background: rgba(16, 185, 129, 0.1);
-    color: var(--nexus-neon);
-    border-color: rgba(16, 185, 129, 0.3);
-}
-
-.badge-draft {
-    background: rgba(245, 158, 11, 0.1);
-    color: #f59e0b;
-    border-color: rgba(245, 158, 11, 0.3);
-}
-
-.badge-draft.pulsing {
-    animation: draft-pulse 2s infinite ease-in-out;
-}
-
-@keyframes draft-pulse {
-    0%, 100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.2); }
-    50% { box-shadow: 0 0 8px 2px rgba(245, 158, 11, 0.4); }
-}
-
-.book-telemetry {
-    display: flex;
-    justify-content: space-between;
-    padding: 0.75rem 0;
-    border-top: 1px dashed var(--border);
-    border-bottom: 1px dashed var(--border);
-}
-
-.telemetry-item {
-    display: flex;
-    flex-direction: column;
-    gap: 0.25rem;
-}
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-.telemetry-label {
-    font-size: 0.75rem;
-    color: var(--text-muted);
-}
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-.telemetry-value {
-    font-size: 0.95rem;
-    font-weight: 600;
-    color: var(--text-main);
-}
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-.book-card-actions {
-    display: flex;
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-    gap: 0.75rem;
-    margin-top: 0.5rem;
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-.book-card-actions .btn-nexus {
-    flex: 1;
-    min-width: 90px;
-    text-align: center;
-    justify-content: center;
-}
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-.book-card-actions .link-btn {
-    flex: unset;
-    width: 100%;
-}
-
-/* --- Buttons --- */
-.btn-nexus {
-    padding: 0.6rem 1.1rem;
-    border-radius: 8px;
-    font-size: 0.85rem;
-    font-weight: 600;
-    cursor: pointer;
-    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
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-}
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-.btn-nexus.primary {
-    background: #10b981;
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-.btn-nexus.secondary {
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-.btn-nexus.link-btn {
-    background: transparent;
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-.btn-nexus:hover {
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-.btn-nexus.primary:hover {
-    filter: brightness(1.15);
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-.btn-nexus.secondary:hover {
-    border-color: var(--accent);
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-.btn-nexus.glow-btn {
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-.btn-nexus.glow-btn:hover {
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-/* --- Modal styles --- */
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-/* --- Modal Content & Header --- */
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-    max-width: 620px; /* Wider split layout */
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-@keyframes fade-in-backdrop {
-    from { opacity: 0; }
-    to { opacity: 1; }
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-@keyframes modal-slide {
-    from { opacity: 0; transform: translateY(-30px); }
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-.form-control, .form-input, ::deep .form-control, ::deep .form-input {
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-.error-banner {
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-/* --- Loading skeleton animations --- */
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-@keyframes skeleton-glow {
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-    margin-top: auto;
-}
-
-/* --- Mobile View Adjustments --- */
-@media (max-width: 767px) {
-    .dashboard-header {
-        padding: 1.5rem 1rem 1rem;
-    }
-
-    .dashboard-title {
-        font-size: 1.75rem;
-    }
-
-    .dashboard-content {
-        padding: 1.5rem 1rem;
-        gap: 2rem;
-    }
-
-    .book-card-actions {
-        flex-direction: column;
-    }
-
-    .book-card-actions .btn-nexus {
-        width: 100%;
-        justify-content: center;
-    }
-}
-
-.validation-message {
-    color: #ff4444;
-    font-size: 0.8rem;
-    margin-top: 0.25rem;
-}
-
-/* Split Layout for Creator Modal */
-.creator-layout {
-    display: grid;
-    grid-template-columns: 140px 1fr;
-    gap: 2rem;
-    align-items: start;
-    margin-top: 0.5rem;
-}
-
-.creator-cover {
-    width: 140px;
-    height: 200px;
-    border-radius: 12px;
-    overflow: hidden;
-    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
-    border: 1px solid rgba(255, 255, 255, 0.08);
-    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
-    position: relative;
-    user-select: none;
-    box-sizing: border-box;
-}
-
-.cover-mockup-design {
-    width: 100%;
-    height: 100%;
-    display: flex;
-    flex-direction: column;
-    justify-content: space-between;
-    padding: 1.5rem 1rem;
-    box-sizing: border-box;
-    position: relative;
-}
-
-.cover-accent-line {
-    position: absolute;
-    top: 0;
-    left: 10px;
-    width: 2px;
-    height: 100%;
-    background: rgba(16, 185, 129, 0.2); /* green accent line */
-    box-shadow: 0 0 8px rgba(16, 185, 129, 0.15);
-}
-
-.cover-main-content {
-    display: flex;
-    flex-direction: column;
-    gap: 0.75rem;
-    z-index: 2;
-    margin-top: 1rem;
-    text-align: center;
-}
-
-.cover-title-text {
-    font-size: 0.8rem;
-    font-weight: 700;
-    color: #ffffff;
-    line-height: 1.4;
-    display: -webkit-box;
-    -webkit-line-clamp: 4;
-    -webkit-box-orient: vertical;
-    overflow: hidden;
-    text-overflow: ellipsis;
-    word-break: break-word;
-}
-
-.cover-author-text {
-    font-size: 0.6rem;
-    color: #9ca3af;
-    font-weight: 600;
-    text-transform: uppercase;
-    letter-spacing: 0.5px;
-}
-
-.cover-logo-container {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    gap: 0.25rem;
-    z-index: 2;
-    color: #10b981;
-    opacity: 0.9;
-}
-
-.cover-logo-container svg {
-    width: 12px;
-    height: 12px;
-    fill: currentColor;
-}
-
-.cover-brand {
-    font-size: 0.65rem;
-    font-weight: 700;
-    letter-spacing: 1px;
-    text-transform: uppercase;
-}
-
-.creator-form-inputs {
-    display: flex;
-    flex-direction: column;
-    gap: 1.25rem;
-}
-
-.actions {
-    display: flex;
-    justify-content: center;
-    gap: 1rem;
-    margin-top: 1.5rem;
-}
-
-

src/NexusReader.UI.Shared/Pages/CreatorEdit.razor

@@ -1,186 +0,0 @@
-@page "/creator/edit/{BookId}"
-@page "/creator/edit/{BookId}/{ChapterId}"
-@layout MainHubLayout
-@attribute [Authorize]
-@using NexusReader.UI.Shared.Components
-
-@if (_loadingChapters)
-{
-    <div class="hub-loading" style="height: calc(100vh - 4rem); display: flex; flex-direction: column; justify-content: center; align-items: center; background-color: var(--bg-base);">
-        <div class="nexus-loader"></div>
-        <p style="margin-top: 1rem; color: var(--text-muted); font-family: var(--nexus-font-sans);">Ładowanie struktury książki...</p>
-    </div>
-}
-else
-{
-    <div class="creator-edit-fullscreen-wrapper">
-        
-        <div class="chapters-sidebar">
-            <div class="sidebar-meta-header">
-                <h2>Rozdziały</h2>
-            </div>
-            <div class="chapters-list-wrapper">
-                @foreach (var ch in _chapters)
-                {
-                    var isActive = ch.Id == _activeChapterId;
-                    <a class="chapter-item @(isActive ? "active" : "")" href="/creator/edit/@BookId/@ch.Id">
-                        @if (isActive)
-                        {
-                            <div class="active-indicator"></div>
-                            <i class="fa-solid fa-book-open chapter-icon"></i>
-                        }
-                        else
-                        {
-                            <i class="fa-solid fa-file-lines chapter-icon"></i>
-                        }
-                        <span class="chapter-title-text">@ch.Title</span>
-                    </a>
-                }
-            </div>
-        </div>
-
-        <div class="editor-workspace-area">
-            
-            <div class="editor-header-row">
-                <div class="title-zone">
-                    <h1 class="chapter-title">@_activeChapterTitle</h1>
-                </div>
-                <div class="telemetry-zone">
-                    <span class="chapter-id-badge">ID: @_activeChapterId</span>
-                </div>
-            </div>
-
-            <div class="editor-canvas-card">
-                @if (_loadingChapter)
-                {
-                    <div class="hub-loading" style="height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center;">
-                        <div class="nexus-loader"></div>
-                        <p style="margin-top: 1rem; color: var(--text-muted); font-family: var(--nexus-font-sans);">Wczytywanie treści rozdziału...</p>
-                    </div>
-                }
-                else if (_isChapterLoaded)
-                {
-                    <div class="milkdown-premium-container" spellcheck="false">
-                        <MarkdownEditor @key="_activeChapterId"
-                                        ChapterId="_activeChapterId"
-                                        InitialMarkdown="@_initialMarkdown"
-                                        ShowFetchButton="false" />
-                    </div>
-                }
-                else
-                {
-                    <div style="height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; color: var(--text-muted); font-family: var(--nexus-font-sans);">
-                        <p>Wybierz lub utwórz rozdział, aby rozpocząć edycję.</p>
-                    </div>
-                }
-            </div>
-        </div>
-    </div>
-}
-
-@code {
-    [Inject] private HttpClient Http { get; set; } = default!;
-    [Inject] private NavigationManager NavigationManager { get; set; } = default!;
-
-    [Parameter] public string BookId { get; set; } = string.Empty;
-    [Parameter] public string ChapterId { get; set; } = string.Empty;
-
-    private List<ChapterListItem> _chapters = new();
-    private Guid _parsedBookId = Guid.Empty;
-    private Guid _activeChapterId = Guid.Empty;
-    private string _activeChapterTitle = string.Empty;
-    private string _initialMarkdown = string.Empty;
-    private bool _loadingChapters = true;
-    private bool _loadingChapter = false;
-    private bool _isChapterLoaded = false;
-
-    private class ChapterListItem
-    {
-        public Guid Id { get; set; }
-        public string Title { get; set; } = string.Empty;
-        public int SortOrder { get; set; }
-    }
-
-    private class ChapterDetail
-    {
-        public Guid Id { get; set; }
-        public string Title { get; set; } = string.Empty;
-        public string MarkdownContent { get; set; } = string.Empty;
-    }
-
-    protected override async Task OnParametersSetAsync()
-    {
-        await base.OnParametersSetAsync();
-
-        if (!Guid.TryParse(BookId, out var parsedBookId))
-        {
-            NavigationManager.NavigateTo("/creator");
-            return;
-        }
-
-        _parsedBookId = parsedBookId;
-
-        // Fetch chapters list if empty or if book ID has changed
-        if (_chapters.Count == 0)
-        {
-            _loadingChapters = true;
-            try
-            {
-                var chapters = await Http.GetFromJsonAsync<List<ChapterListItem>>($"/api/creator/books/{_parsedBookId}/chapters");
-                _chapters = chapters ?? new();
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"[CreatorEdit] Error fetching chapters list: {ex.Message}");
-            }
-            finally
-            {
-                _loadingChapters = false;
-            }
-        }
-
-        // If ChapterId is empty/null, select the first chapter from list and navigate
-        if (string.IsNullOrEmpty(ChapterId))
-        {
-            if (_chapters.Any())
-            {
-                NavigationManager.NavigateTo($"/creator/edit/{BookId}/{_chapters.First().Id}");
-            }
-            return;
-        }
-
-        if (Guid.TryParse(ChapterId, out var parsedChapterId))
-        {
-            // If active chapter changed, fetch its details
-            if (parsedChapterId != _activeChapterId)
-            {
-                _activeChapterId = parsedChapterId;
-                var ch = _chapters.FirstOrDefault(c => c.Id == _activeChapterId);
-                _activeChapterTitle = ch?.Title ?? "Rozdział";
-
-                _loadingChapter = true;
-                _isChapterLoaded = false;
-                StateHasChanged();
-
-                try
-                {
-                    var detail = await Http.GetFromJsonAsync<ChapterDetail>($"/api/chapters/{_activeChapterId}");
-                    if (detail != null)
-                    {
-                        _initialMarkdown = detail.MarkdownContent;
-                        _isChapterLoaded = true;
-                    }
-                }
-                catch (Exception ex)
-                {
-                    Console.WriteLine($"[CreatorEdit] Error fetching chapter content: {ex.Message}");
-                }
-                finally
-                {
-                    _loadingChapter = false;
-                }
-            }
-        }
-    }
-}
-

src/NexusReader.UI.Shared/Pages/CreatorEdit.razor.css

@@ -1,365 +0,0 @@
-/* ==========================================================================
-   NEXUSREADER CREATOR EDIT MODE - HIGH-FIDELITY SAAS PREMIUM DESIGN OVERRIDE
-   ========================================================================== */
-
-/* 1. ARCHITECTURAL BOUNDARY CONTROL */
-.creator-edit-fullscreen-wrapper {
-    width: 100% !important;
-    max-width: 100% !important;
-    height: calc(100vh - 4rem) !important;
-    margin: 0 !important;
-    padding: 0 !important;
-    display: flex !important;
-    overflow: hidden !important;
-    background-color: #121214;
-    box-sizing: border-box;
-}
-
-/* Dynamic theme bridge mapping for Warm Paper mode */
-.theme-light .creator-edit-fullscreen-wrapper {
-    background-color: #f4f1ea;
-}
-
-/* 2. UNIFIED SIDEBAR DESIGN (Eliminating layout color fragmentation) */
-.chapters-sidebar {
-    width: 300px !important;
-    flex-shrink: 0;
-    background-color: #16161a !important;
-    border-right: 1px solid rgba(255, 255, 255, 0.04) !important;
-    display: flex;
-    flex-direction: column;
-    padding: 2.5rem 1.5rem !important;
-    box-sizing: border-box;
-}
-
-.theme-light .chapters-sidebar {
-    background-color: #eae6db !important; /* Rich warm tone that remains fully cohesive with warm paper base */
-    border-right: 1px solid #dcd7cc !important;
-}
-
-.sidebar-meta-header h2 {
-    font-size: 0.8rem;
-    font-weight: 700;
-    text-transform: uppercase;
-    letter-spacing: 2px;
-    color: #a1a1aa;
-    margin: 0 0 1.75rem 0;
-}
-
-.theme-light .sidebar-meta-header h2 {
-    color: #78716c;
-}
-
-.chapters-list-wrapper {
-    display: flex;
-    flex-direction: column;
-    gap: 6px;
-}
-
-/* Premium Navigation Links */
-.chapter-item {
-    position: relative;
-    display: flex;
-    align-items: center;
-    gap: 12px;
-    padding: 12px 16px !important;
-    border-radius: 10px;
-    color: #a1a1aa;
-    font-size: 0.95rem;
-    cursor: pointer;
-    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
-}
-
-.theme-light .chapter-item {
-    color: #78716c;
-}
-
-.chapter-item i.chapter-icon {
-    font-size: 0.95rem;
-    color: #71717a;
-    transition: color 0.25s ease;
-}
-
-/* Active Indicator Node Alignment */
-.chapter-item.active {
-    background-color: rgba(0, 255, 153, 0.05) !important;
-    color: #00ff99 !important;
-    font-weight: 600;
-}
-
-.theme-light .chapter-item.active {
-    background-color: rgba(16, 185, 129, 0.06) !important;
-    color: #10b981 !important;
-}
-
-.chapter-item.active i.chapter-icon {
-    color: inherit !important;
-}
-
-.chapter-item:hover:not(.active) {
-    background-color: rgba(255, 255, 255, 0.02);
-    color: #ffffff;
-}
-
-.theme-light .chapter-item:hover:not(.active) {
-    background-color: rgba(0, 0, 0, 0.02);
-    color: #2d2a26;
-}
-
-/* 3. WORKSPACE METRICS (Zen presentation spacing) */
-.editor-workspace-area {
-    flex-grow: 1;
-    display: flex;
-    flex-direction: column;
-    height: 100%;
-    padding: 3rem 4rem 2.5rem 4rem !important; /* Generous padding context for premium scale */
-    box-sizing: border-box;
-    overflow: hidden;
-}
-
-.editor-header-row {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    margin-bottom: 2rem;
-    flex-shrink: 0;
-    width: 100%;
-}
-
-.editor-workspace-area h1.chapter-title {
-    font-size: 2.4rem;
-    font-weight: 700;
-    color: #ffffff;
-    margin: 0;
-    letter-spacing: -0.75px;
-}
-
-.theme-light .editor-workspace-area h1.chapter-title {
-    color: #2d2a26;
-}
-
-.chapter-id-badge {
-    font-family: 'Azeret Mono', monospace;
-    font-size: 0.72rem;
-    color: #71717a;
-    background: #1a1a1e;
-    padding: 6px 14px;
-    border-radius: 8px;
-    border: 1px solid rgba(255, 255, 255, 0.05);
-    letter-spacing: 0.2px;
-}
-
-.theme-light .chapter-id-badge {
-    background: #ffffff;
-    color: #78716c;
-    border: 1px solid #dcd7cc;
-}
-
-/* 4. ELEVATED EDITOR CANVAS CARD (Introducing layered shadow mechanics) */
-.editor-canvas-card {
-    background-color: #1a1a1e !important;
-    border: 1px solid rgba(255, 255, 255, 0.04) !important;
-    border-radius: 20px;
-    padding: 3rem !important;
-    display: flex;
-    flex-direction: column;
-    flex-grow: 1;
-    overflow: hidden;
-    box-sizing: border-box;
-    /* Soft diffuse structural shadows mimicking actual surface elevation */
-    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.2);
-}
-
-.theme-light .editor-canvas-card {
-    background-color: #ffffff !important;
-    border: 1px solid #dcd7cc !important;
-    box-shadow: 0 20px 50px rgba(45, 42, 38, 0.04), 0 4px 12px rgba(45, 42, 38, 0.02);
-}
-
-.milkdown-premium-container {
-    flex-grow: 1;
-    display: flex;
-    flex-direction: column;
-    overflow: hidden;
-    width: 100%;
-}
-
-/* DEEP MOUNTING COMPONENT INTEROP */
-.milkdown-premium-container ::deep .milkdown {
-    background: transparent !important;
-    box-shadow: none !important;
-    border: none !important;
-    display: flex;
-    flex-direction: column;
-    flex-grow: 1;
-    overflow: hidden;
-    width: 100%;
-}
-
-.milkdown-premium-container ::deep .ProseMirror {
-    color: #e4e1d9 !important;
-    background-color: transparent !important;
-    font-size: 1.15rem !important;
-    line-height: 1.8 !important;
-    flex-grow: 1;
-    overflow-y: auto !important;
-    padding-right: 24px !important;
-    outline: none !important;
-    box-sizing: border-box;
-    width: 100%;
-}
-
-.theme-light .milkdown-premium-container ::deep .ProseMirror {
-    color: #2d2a26 !important;
-}
-
-/* Precise matching text selection token */
-.milkdown-premium-container ::deep .ProseMirror ::selection {
-    background-color: rgba(0, 255, 153, 0.2) !important;
-}
-
-.theme-light .milkdown-premium-container ::deep .ProseMirror ::selection {
-    background-color: rgba(16, 185, 129, 0.18) !important;
-}
-
-/* Core webkit custom scrollbar mapping */
-.milkdown-premium-container ::deep .ProseMirror::-webkit-scrollbar {
-    width: 6px;
-}
-.milkdown-premium-container ::deep .ProseMirror::-webkit-scrollbar-track {
-    background: transparent;
-}
-.milkdown-premium-container ::deep .ProseMirror::-webkit-scrollbar-thumb {
-    background: rgba(255, 255, 255, 0.08);
-    border-radius: 4px;
-}
-
-.theme-light .milkdown-premium-container ::deep .ProseMirror::-webkit-scrollbar-thumb {
-    background: #dcd7cc;
-}
-
-/* 5. SEAMLESS INTEGRATED ACTIONS FOOTER BAR (OVERWRITING FOR MARKDOWNEDITOR COMPONENT INTEGRATION) */
-.milkdown-premium-container ::deep .markdown-editor-container {
-    display: flex;
-    flex-direction: column;
-    flex-grow: 1;
-    overflow: hidden;
-    height: 100%;
-}
-
-.milkdown-premium-container ::deep .milkdown-editor-wrapper {
-    background: transparent !important;
-    border: none !important;
-    box-shadow: none !important;
-    padding: 0 !important;
-    flex-grow: 1;
-    overflow: hidden !important;
-    display: flex;
-    flex-direction: column;
-}
-
-.milkdown-premium-container ::deep .milkdown {
-    flex-grow: 1;
-    overflow: hidden !important;
-}
-
-.milkdown-premium-container ::deep .editor-footer {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    margin-top: 2rem !important;
-    padding: 1.5rem 0 0 0 !important;
-    border: none !important;
-    border-top: 1px solid rgba(255, 255, 255, 0.04) !important;
-    background: transparent !important;
-    border-radius: 0 !important;
-    flex-shrink: 0;
-    width: 100%;
-}
-
-.theme-light .milkdown-premium-container ::deep .editor-footer {
-    border-top: 1px solid #dcd7cc !important;
-}
-
-/* Telemetry cloud synchronization line mapping */
-.milkdown-premium-container ::deep .status-indicator {
-    display: flex;
-    align-items: center;
-    gap: 12px;
-    font-family: 'Azeret Mono', monospace;
-    font-size: 0.82rem;
-    color: #71717a;
-    letter-spacing: 0.1px;
-}
-
-.theme-light .milkdown-premium-container ::deep .status-indicator {
-    color: #78716c;
-}
-
-.milkdown-premium-container ::deep .status-dot {
-    width: 7px;
-    height: 7px;
-    border-radius: 50%;
-    display: inline-block;
-}
-
-.milkdown-premium-container ::deep .status-dot.saved {
-    background-color: #00ff99 !important;
-    box-shadow: 0 0 10px rgba(0, 255, 153, 0.8) !important;
-    color: #00ff99 !important;
-}
-
-.theme-light .milkdown-premium-container ::deep .status-dot.saved {
-    background-color: #10b981 !important;
-    box-shadow: 0 0 10px rgba(16, 185, 129, 0.6) !important;
-    color: #10b981 !important;
-}
-
-.milkdown-premium-container ::deep .status-dot.saving {
-    background-color: #F59E0B !important;
-    box-shadow: 0 0 10px rgba(245, 158, 11, 0.8) !important;
-    color: #F59E0B !important;
-}
-
-.milkdown-premium-container ::deep .status-dot.offline {
-    background-color: #EF4444 !important;
-    box-shadow: 0 0 10px rgba(239, 68, 68, 0.8) !important;
-    color: #EF4444 !important;
-}
-
-/* Premium Tactile Operational Button Trigger */
-.milkdown-premium-container ::deep .nexus-btn {
-    background-color: #00ff99 !important;
-    color: #121214 !important;
-    font-weight: 700;
-    font-size: 0.9rem;
-    letter-spacing: -0.1px;
-    padding: 11px 24px !important;
-    border: none !important;
-    border-radius: 10px;
-    cursor: pointer;
-    display: inline-flex;
-    align-items: center;
-    gap: 10px;
-    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
-    box-shadow: 0 4px 20px rgba(0, 255, 153, 0.15);
-    height: auto !important;
-    min-height: unset !important;
-}
-
-.theme-light .milkdown-premium-container ::deep .nexus-btn {
-    background-color: #10b981 !important;
-    color: #ffffff !important;
-    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.15);
-}
-
-.milkdown-premium-container ::deep .nexus-btn:hover {
-    transform: translateY(-1px);
-    box-shadow: 0 8px 24px rgba(0, 255, 153, 0.3);
-}
-
-.theme-light .milkdown-premium-container ::deep .nexus-btn:hover {
-    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
-}
-
-

src/NexusReader.UI.Shared/Pages/CreatorTest.razor

@@ -0,0 +1,128 @@
+@page "/dev/creator-test"
+@using Microsoft.AspNetCore.Authorization
+@attribute [AllowAnonymous]
+@inject HttpClient Http
+
+<PageTitle>Markdown Creator Test</PageTitle>
+
+<div class="creator-test-container glass-panel">
+    <div class="test-header">
+        <h1>Milkdown WYSIWYG Integration (Stage 2)</h1>
+        <p class="subtitle">Verifying secure image upload (drag &amp; drop / paste) and backend XSS sanitization.</p>
+    </div>
+
+    <div class="editor-section">
+        <MarkdownEditor InitialMarkdown="@_initialMarkdown" OnSave="HandleSave" Height="400px" />
+    </div>
+
+    <div class="result-section">
+        <div class="result-header">
+            <h3>Retrieved Markdown Content</h3>
+            @if (!string.IsNullOrEmpty(_savedMarkdown))
+            {
+                <button type="button" @onclick="SanitizeContentAsync" class="nexus-btn secondary-btn">
+                    Run XSS Guard Sanitization
+                </button>
+            }
+        </div>
+        <p class="description">This block shows the content received from the editor when you click "Fetch Markdown Content".</p>
+        <div class="pre-wrapper">
+            @if (string.IsNullOrEmpty(_savedMarkdown))
+            {
+                <span class="placeholder">No content fetched yet. Click "Fetch Markdown Content" above to retrieve data.</span>
+            }
+            else
+            {
+                <pre><code>@_savedMarkdown</code></pre>
+            }
+        </div>
+
+        @if (!string.IsNullOrEmpty(_sanitizedMarkdown))
+        {
+            <div class="sanitized-container">
+                <h3>Sanitized Content (XSS Shielded)</h3>
+                <p class="description">This block shows the content after passing through the backend `HtmlSanitizer` API.</p>
+                <div class="pre-wrapper sanitized-wrapper">
+                    <pre><code>@_sanitizedMarkdown</code></pre>
+                </div>
+            </div>
+        }
+    </div>
+</div>
+
+@code {
+    private readonly string _initialMarkdown = @"# Milkdown WYSIWYG Test Page (Stage 2)
+
+This is a demonstration of the **Milkdown** editor embedded inside a Blazor WASM component.
+
+## Secure Image Upload (Drag & Drop / Paste)
+
+You can drag and drop or copy-paste an image (JPEG, PNG, WEBP) directly into this editor area. The file will be intercepted, sent as a byte stream to the backend `/api/media/upload` endpoint, validated for magic numbers and file size limits (max 5MB), saved locally, and rendered inside the editor.
+
+## XSS Security Test
+
+Here is some malicious HTML to test the backend XSS Guard:
+<script>alert('xss')</script>
+<img src=x onerror=alert(1)>
+
+## GFM Features Support
+
+The editor supports Github Flavored Markdown out-of-the-box:
+
+1. **Task Lists**
+   - [x] Create reusable Blazor component
+   - [x] Configure ESM dynamic wrapper
+   - [x] Implement stage 2 features
+
+2. **Tables**
+
+| Feature | Stage 1 Status | Stage 2 Plan |
+| :--- | :---: | :---: |
+| WYSIWYG Mode | Active | Polish UI |
+| C# Interop | Done | Auto-Sync |
+| GFM Support | Verified | Custom Nodes |
+
+Feel free to edit this text and click **Fetch Markdown Content** below!";
+
+    private string _savedMarkdown = string.Empty;
+    private string _sanitizedMarkdown = string.Empty;
+
+    private void HandleSave(string markdown)
+    {
+        _savedMarkdown = markdown;
+        _sanitizedMarkdown = string.Empty; // Reset sanitization result
+        StateHasChanged();
+    }
+
+    private async Task SanitizeContentAsync()
+    {
+        if (string.IsNullOrEmpty(_savedMarkdown)) return;
+
+        try
+        {
+            var request = new NexusReader.Application.DTOs.Media.ValidateChapterRequest(_savedMarkdown);
+            var response = await Http.PostAsJsonAsync(
+                "/api/chapters/validate", 
+                request, 
+                NexusReader.Application.Common.AppJsonContext.Default.ValidateChapterRequest
+            );
+
+            if (response.IsSuccessStatusCode)
+            {
+                var result = await response.Content.ReadFromJsonAsync<NexusReader.Application.DTOs.Media.ValidateChapterResponse>(
+                    NexusReader.Application.Common.AppJsonContext.Default.ValidateChapterResponse
+                );
+                _sanitizedMarkdown = result?.SanitizedContent ?? string.Empty;
+            }
+            else
+            {
+                _sanitizedMarkdown = $"Error: {response.StatusCode}";
+            }
+        }
+        catch (Exception ex)
+        {
+            _sanitizedMarkdown = $"Exception: {ex.Message}";
+        }
+        StateHasChanged();
+    }
+}

src/NexusReader.UI.Shared/Pages/CreatorTest.razor.css

@@ -0,0 +1,108 @@
+.creator-test-container {
+    max-width: 1000px;
+    margin: 2rem auto;
+    padding: 2rem;
+    display: flex;
+    flex-direction: column;
+    gap: 1.5rem;
+}
+
+.test-header h1 {
+    font-size: 1.75rem;
+    color: var(--text-main);
+    margin: 0 0 0.5rem 0;
+}
+
+.test-header .subtitle {
+    font-size: 0.95rem;
+    color: var(--text-muted);
+    margin: 0;
+}
+
+.editor-section {
+    background: var(--bg-surface);
+    border: 1px solid var(--border);
+    border-radius: var(--radius-lg);
+    padding: 1.5rem;
+    overflow: hidden;
+}
+
+.result-section {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border);
+    border-radius: var(--radius-lg);
+    padding: 1.5rem;
+}
+
+.result-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    gap: 1rem;
+    margin-bottom: 0.5rem;
+}
+
+.result-section h3 {
+    margin: 0;
+    font-size: 1.2rem;
+    color: var(--text-main);
+}
+
+.sanitized-container {
+    margin-top: 1.5rem;
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+    border-top: 1px dashed var(--border);
+    padding-top: 1.5rem;
+}
+
+.sanitized-wrapper {
+    border-color: rgba(0, 255, 153, 0.25);
+    box-shadow: 0 0 10px rgba(0, 255, 153, 0.05);
+}
+
+.nexus-btn.secondary-btn {
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    color: #ffffff;
+}
+
+.nexus-btn.secondary-btn:hover {
+    background: rgba(255, 255, 255, 0.1);
+    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.05);
+}
+
+.result-section .description {
+    font-size: 0.85rem;
+    color: var(--text-muted);
+    margin: 0 0 0.5rem 0;
+}
+
+.pre-wrapper {
+    background: #09090b;
+    border: 1px solid var(--border);
+    border-radius: var(--radius-md);
+    padding: 1.2rem;
+    max-height: 400px;
+    overflow-y: auto;
+}
+
+.pre-wrapper pre {
+    margin: 0;
+    white-space: pre-wrap;
+    word-break: break-all;
+    font-family: monospace;
+    font-size: 0.9rem;
+    color: #e4e4e7;
+    line-height: 1.5;
+}
+
+.placeholder {
+    color: var(--text-muted);
+    font-size: 0.9rem;
+    font-style: italic;
+}

src/NexusReader.UI.Shared/wwwroot/app.css

@@ -1,4 +1,4 @@
-@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&family=Azeret+Mono:wght@300;400;500;600&display=swap');
+@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 {
     /* Semantic design tokens - default to Modern Deep Dark (Dark Mode) */
@@ -19,7 +19,6 @@
     --nexus-paper: #F9F9F9;
     --nexus-font-sans: 'Inter', sans-serif;
     --nexus-font-serif: 'Merriweather', serif;
-    --nexus-font-mono: 'Azeret Mono', monospace;
 
     /* Global Selection Style Override */
     --nexus-selection: rgba(0, 255, 153, 0.25);
@@ -61,12 +60,9 @@
     --nexus-node-concept-text: #e0e0e0;
 }
 
-::selection,
-.ProseMirror ::selection,
-.ProseMirror::selection,
-.ProseMirror *::selection {
-    background-color: var(--nexus-selection) !important;
-    color: inherit !important;
+::selection {
+    background-color: var(--nexus-selection);
+    color: inherit;
 }
 
 
@@ -448,547 +444,4 @@ h1:focus {
         opacity: 0.5;
         transform: scale(0.95);
     }
-}
-
-/* ==========================================================================
-   Selection Pop-up Menu & Crepe Toolbar Unification (SelectionAiPanel Style)
-   ========================================================================== */
-
-/* 1. Pop-up Containers (Glassmorphism Capsule) */
-.milkdown-popover,
-.popover,
-.prosemirror-bubble-menu,
-.milkdown .popover,
-.milkdown-popover.popover,
-.milkdown-toolbar {
-    background: rgba(24, 24, 28, 0.85) !important;
-    backdrop-filter: blur(12px) !important;
-    -webkit-backdrop-filter: blur(12px) !important;
-    border: 1px solid rgba(255, 255, 255, 0.08) !important;
-    border-radius: 8px !important;
-    padding: 4px 6px !important;
-    margin: 0 !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5), 0 12px 28px rgba(0, 0, 0, 0.4) !important;
-    display: inline-flex; /* Removed !important to allow Tippy.js to hide popovers via inline style */
-    align-items: center !important;
-    gap: 4px !important;
-    z-index: 10000 !important;
-    box-sizing: border-box !important;
-    animation: fadeInScaleGlobal 0.18s cubic-bezier(0.16, 1, 0.3, 1) !important;
-}
-
-/* Light Theme (Warm Paper) Overrides for Container */
-.theme-light .milkdown-popover,
-.theme-light .popover,
-.theme-light .prosemirror-bubble-menu,
-.theme-light .milkdown .popover,
-.theme-light .milkdown-popover.popover,
-.theme-light .milkdown-toolbar {
-    background: rgba(254, 254, 254, 0.95) !important;
-    border: 1px solid rgba(0, 0, 0, 0.08) !important;
-    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05), 0 10px 30px rgba(0, 0, 0, 0.04) !important;
-}
-
-/* 2. Button & Item Formatting (Reader Selection Toolbar Style) */
-.milkdown-popover button,
-.popover button,
-.prosemirror-bubble-menu button,
-.milkdown .popover button,
-.milkdown-toolbar button {
-    text-transform: none !important;
-    font-size: 0.8rem !important;
-    font-weight: 500 !important;
-    color: #e4e4e7 !important; /* zinc-200 */
-    background: transparent !important;
-    border: none !important;
-    padding: 6px 12px !important;
-    margin: 0 !important;
-    border-radius: 6px !important;
-    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
-    display: inline-flex !important;
-    align-items: center !important;
-    justify-content: center !important;
-    cursor: pointer !important;
-    gap: 6px !important;
-}
-
-/* Crepe's Specific Square Icon-Only Toolbar Items */
-.milkdown-toolbar .toolbar-item {
-    text-transform: none !important;
-    color: #e4e4e7 !important; /* zinc-200 */
-    background: transparent !important;
-    border: none !important;
-    margin: 0 !important;
-    border-radius: 6px !important;
-    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
-    cursor: pointer !important;
-    width: 28px !important;
-    height: 28px !important;
-    padding: 6px !important;
-    display: inline-flex !important;
-    justify-content: center !important;
-    align-items: center !important;
-    box-sizing: border-box !important;
-}
-
-/* Icon overrides inside buttons */
-.milkdown-popover button svg,
-.popover button svg,
-.prosemirror-bubble-menu button svg,
-.milkdown .popover button svg,
-.milkdown-popover button i,
-.popover button i,
-.prosemirror-bubble-menu button i,
-.milkdown .popover button i,
-.milkdown-toolbar button svg,
-.milkdown-toolbar .toolbar-item svg,
-.milkdown-toolbar button i,
-.milkdown-toolbar .toolbar-item i {
-    color: currentColor !important;
-    fill: currentColor !important;
-    width: 14px !important;
-    height: 14px !important;
-}
-
-/* Hover effects (zinc-200 / zinc-100 highlight) */
-.milkdown-popover button:hover:not(.active),
-.popover button:hover:not(.active),
-.prosemirror-bubble-menu button:hover:not(.active),
-.milkdown-toolbar button:hover:not(.active),
-.milkdown-toolbar .toolbar-item:hover:not(.active) {
-    background: rgba(255, 255, 255, 0.05) !important;
-    color: #ffffff !important;
-}
-
-/* Active formatting state colors (var(--accent, #00ff99)) */
-.milkdown-popover button.active,
-.popover button.active,
-.prosemirror-bubble-menu button.active,
-.milkdown-popover button[aria-pressed="true"],
-.popover button[aria-pressed="true"],
-.prosemirror-bubble-menu button[aria-pressed="true"],
-.milkdown-toolbar button.active,
-.milkdown-toolbar .toolbar-item.active,
-.milkdown-toolbar button[aria-pressed="true"],
-.milkdown-toolbar .toolbar-item[aria-pressed="true"] {
-    color: var(--accent, #00ff99) !important;
-}
-
-.milkdown-popover button.active:hover,
-.popover button.active:hover,
-.prosemirror-bubble-menu button.active:hover,
-.milkdown-popover button[aria-pressed="true"]:hover,
-.popover button[aria-pressed="true"]:hover,
-.prosemirror-bubble-menu button[aria-pressed="true"]:hover,
-.milkdown-toolbar button.active:hover,
-.milkdown-toolbar .toolbar-item.active:hover,
-.milkdown-toolbar button[aria-pressed="true"]:hover,
-.milkdown-toolbar .toolbar-item[aria-pressed="true"]:hover {
-    background: rgba(0, 255, 153, 0.08) !important;
-    box-shadow: 0 0 12px rgba(0, 255, 153, 0.15) !important;
-    color: var(--accent, #00ff99) !important;
-}
-
-/* 3. Light Theme Overrides for Buttons */
-.theme-light .milkdown-popover button,
-.theme-light .popover button,
-.theme-light .prosemirror-bubble-menu button,
-.theme-light .milkdown-toolbar button,
-.theme-light .milkdown-toolbar .toolbar-item {
-    color: #57524e !important;
-}
-
-.theme-light .milkdown-popover button:hover:not(.active),
-.theme-light .popover button:hover:not(.active),
-.theme-light .prosemirror-bubble-menu button:hover:not(.active),
-.theme-light .milkdown-toolbar button:hover:not(.active),
-.theme-light .milkdown-toolbar .toolbar-item:hover:not(.active) {
-    background: rgba(0, 0, 0, 0.04) !important;
-    color: #1c1917 !important;
-}
-
-.theme-light .milkdown-popover button.active,
-.theme-light .popover button.active,
-.theme-light .prosemirror-bubble-menu button.active,
-.theme-light .milkdown-popover button[aria-pressed="true"],
-.theme-light .popover button[aria-pressed="true"],
-.theme-light .prosemirror-bubble-menu button[aria-pressed="true"],
-.theme-light .milkdown-toolbar button.active,
-.theme-light .milkdown-toolbar .toolbar-item.active,
-.theme-light .milkdown-toolbar button[aria-pressed="true"],
-.theme-light .milkdown-toolbar .toolbar-item[aria-pressed="true"] {
-    color: #10b981 !important;
-}
-
-.theme-light .milkdown-popover button.active:hover,
-.theme-light .popover button.active:hover,
-.theme-light .prosemirror-bubble-menu button.active:hover,
-.theme-light .milkdown-popover button[aria-pressed="true"]:hover,
-.theme-light .popover button[aria-pressed="true"]:hover,
-.theme-light .prosemirror-bubble-menu button[aria-pressed="true"]:hover,
-.theme-light .milkdown-toolbar button.active:hover,
-.theme-light .milkdown-toolbar .toolbar-item.active:hover,
-.theme-light .milkdown-toolbar button[aria-pressed="true"]:hover,
-.theme-light .milkdown-toolbar .toolbar-item[aria-pressed="true"]:hover {
-    background: rgba(16, 185, 129, 0.06) !important;
-    box-shadow: 0 0 12px rgba(16, 185, 129, 0.1) !important;
-    color: #10b981 !important;
-}
-
-/* 4. Dividers Alignment */
-.milkdown-popover .divider,
-.popover .divider,
-.prosemirror-bubble-menu .divider,
-.milkdown .popover .divider,
-.milkdown-toolbar .divider {
-    width: 1px !important;
-    height: 16px !important;
-    background-color: rgba(255, 255, 255, 0.1) !important;
-    margin: 0 4px !important;
-    border: none !important;
-}
-
-.theme-light .milkdown-popover .divider,
-.theme-light .popover .divider,
-.theme-light .prosemirror-bubble-menu .divider,
-.theme-light .milkdown-toolbar .divider {
-    background-color: rgba(0, 0, 0, 0.08) !important;
-}
-
-    to {
-        opacity: 1;
-        transform: scale(1);
-    }
-}
-
-/* ==========================================================================
-   Editor Table & General Control Elements Theming (SelectionAiPanel Style)
-   ========================================================================== */
-
-/* 1. Cell Drag Handles (Column and Row Drag Handles) */
-.milkdown .milkdown-table-block .cell-handle {
-    background-color: rgba(24, 24, 28, 0.85) !important;
-    backdrop-filter: blur(12px) !important;
-    -webkit-backdrop-filter: blur(12px) !important;
-    border: 1px solid rgba(255, 255, 255, 0.08) !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
-    color: #e4e4e7 !important;
-    transition: all 0.2s ease !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .cell-handle {
-    background-color: rgba(254, 254, 254, 0.95) !important;
-    border: 1px solid rgba(0, 0, 0, 0.08) !important;
-    color: #57524e !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05) !important;
-}
-
-.milkdown .milkdown-table-block .cell-handle:hover {
-    background-color: rgba(255, 255, 255, 0.15) !important;
-    color: #ffffff !important;
-    border-color: var(--accent) !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .cell-handle:hover {
-    background-color: rgba(0, 0, 0, 0.08) !important;
-    color: #1c1917 !important;
-    border-color: #10b981 !important;
-}
-
-.milkdown .milkdown-table-block .cell-handle svg {
-    fill: currentColor !important;
-    color: currentColor !important;
-}
-
-/* 2. Drag Handle Options Popup Menu (.button-group) */
-.milkdown .milkdown-table-block .cell-handle .button-group {
-    background: rgba(24, 24, 28, 0.85) !important;
-    backdrop-filter: blur(12px) !important;
-    -webkit-backdrop-filter: blur(12px) !important;
-    border: 1px solid rgba(255, 255, 255, 0.08) !important;
-    border-radius: 8px !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5), 0 12px 28px rgba(0, 0, 0, 0.4) !important;
-    padding: 4px !important;
-    gap: 4px !important;
-    display: flex; /* Removed !important to allow toggling via data-show attribute */
-}
-
-.theme-light .milkdown .milkdown-table-block .cell-handle .button-group {
-    background: rgba(254, 254, 254, 0.95) !important;
-    border: 1px solid rgba(0, 0, 0, 0.08) !important;
-    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05), 0 10px 30px rgba(0, 0, 0, 0.04) !important;
-}
-
-.milkdown .milkdown-table-block .cell-handle .button-group button {
-    background: transparent !important;
-    border: none !important;
-    margin: 0 !important;
-    border-radius: 6px !important;
-    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
-    cursor: pointer !important;
-    width: 28px !important;
-    height: 28px !important;
-    padding: 6px !important;
-    display: inline-flex !important;
-    justify-content: center !important;
-    align-items: center !important;
-    box-sizing: border-box !important;
-    color: #e4e4e7 !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .cell-handle .button-group button {
-    color: #57524e !important;
-}
-
-.milkdown .milkdown-table-block .cell-handle .button-group button:hover {
-    background: rgba(255, 255, 255, 0.05) !important;
-    color: #ffffff !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .cell-handle .button-group button:hover {
-    background: rgba(0, 0, 0, 0.04) !important;
-    color: #1c1917 !important;
-}
-
-.milkdown .milkdown-table-block .cell-handle .button-group button:active {
-    background: rgba(0, 255, 153, 0.08) !important;
-    color: var(--accent, #00ff99) !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .cell-handle .button-group button:active {
-    background: rgba(16, 185, 129, 0.06) !important;
-    color: #10b981 !important;
-}
-
-.milkdown .milkdown-table-block .cell-handle .button-group button svg {
-    color: currentColor !important;
-    fill: currentColor !important;
-    width: 14px !important;
-    height: 14px !important;
-}
-
-/* 3. Table Column/Row Insertion Lines & Add Buttons */
-.milkdown .milkdown-table-block .line-handle {
-    background-color: var(--accent) !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .line-handle {
-    background-color: #10b981 !important;
-}
-
-.milkdown .milkdown-table-block .line-handle .add-button {
-    background-color: rgba(24, 24, 28, 0.85) !important;
-    backdrop-filter: blur(12px) !important;
-    -webkit-backdrop-filter: blur(12px) !important;
-    border: 1px solid rgba(255, 255, 255, 0.08) !important;
-    color: #e4e4e7 !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .line-handle .add-button {
-    background-color: rgba(254, 254, 254, 0.95) !important;
-    border: 1px solid rgba(0, 0, 0, 0.08) !important;
-    color: #57524e !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05) !important;
-}
-
-.milkdown .milkdown-table-block .line-handle .add-button:hover {
-    background-color: rgba(255, 255, 255, 0.15) !important;
-    color: #ffffff !important;
-    border-color: var(--accent) !important;
-}
-
-.theme-light .milkdown .milkdown-table-block .line-handle .add-button:hover {
-    background-color: rgba(0, 0, 0, 0.08) !important;
-    color: #1c1917 !important;
-    border-color: #10b981 !important;
-}
-
-.milkdown .milkdown-table-block .line-handle .add-button svg {
-    width: 12px !important;
-    height: 12px !important;
-    color: currentColor !important;
-    fill: currentColor !important;
-}
-
-/* 4. Paragraph Block Drag Handles */
-.milkdown .milkdown-block-handle {
-    background-color: rgba(24, 24, 28, 0.85) !important;
-    backdrop-filter: blur(12px) !important;
-    -webkit-backdrop-filter: blur(12px) !important;
-    border: 1px solid rgba(255, 255, 255, 0.08) !important;
-    border-radius: 6px !important;
-    padding: 2px !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
-    display: flex; /* Removed !important to allow toggling */
-    gap: 2px !important;
-}
-
-.theme-light .milkdown .milkdown-block-handle {
-    background-color: rgba(254, 254, 254, 0.95) !important;
-    border: 1px solid rgba(0, 0, 0, 0.08) !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05) !important;
-}
-
-.milkdown .milkdown-block-handle .operation-item {
-    border-radius: 4px !important;
-    width: 24px !important;
-    height: 24px !important;
-    padding: 4px !important;
-    display: inline-flex !important;
-    justify-content: center !important;
-    align-items: center !important;
-    color: #e4e4e7 !important;
-    transition: all 0.2s ease !important;
-}
-
-.theme-light .milkdown .milkdown-block-handle .operation-item {
-    color: #57524e !important;
-}
-
-.milkdown .milkdown-block-handle .operation-item:hover {
-    background: rgba(255, 255, 255, 0.05) !important;
-    color: #ffffff !important;
-}
-
-.theme-light .milkdown .milkdown-block-handle .operation-item:hover {
-    background: rgba(0, 0, 0, 0.04) !important;
-    color: #1c1917 !important;
-}
-
-.milkdown .milkdown-block-handle .operation-item.active {
-    background: rgba(0, 255, 153, 0.08) !important;
-    color: var(--accent, #00ff99) !important;
-}
-
-.theme-light .milkdown .milkdown-block-handle .operation-item.active {
-    background: rgba(16, 185, 129, 0.06) !important;
-    color: #10b981 !important;
-}
-
-.milkdown .milkdown-block-handle .operation-item svg {
-    width: 14px !important;
-    height: 14px !important;
-    fill: currentColor !important;
-    color: currentColor !important;
-}
-
-/* 5. Slash Commands Menu */
-.milkdown .milkdown-slash-menu {
-    background: rgba(24, 24, 28, 0.85) !important;
-    backdrop-filter: blur(12px) !important;
-    -webkit-backdrop-filter: blur(12px) !important;
-    border: 1px solid rgba(255, 255, 255, 0.08) !important;
-    border-radius: 8px !important;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5), 0 12px 28px rgba(0, 0, 0, 0.4) !important;
-    font-family: var(--nexus-font-sans) !important;
-    color: #ffffff !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu {
-    background: rgba(254, 254, 254, 0.95) !important;
-    border: 1px solid rgba(0, 0, 0, 0.08) !important;
-    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05), 0 10px 30px rgba(0, 0, 0, 0.04) !important;
-    color: #2d2a26 !important;
-}
-
-.milkdown .milkdown-slash-menu .tab-group ul li {
-    color: #a1a1aa !important;
-    border-radius: 6px !important;
-    transition: all 0.2s ease !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .tab-group ul li {
-    color: #78716c !important;
-}
-
-.milkdown .milkdown-slash-menu .tab-group ul li:hover {
-    background: rgba(255, 255, 255, 0.05) !important;
-    color: #ffffff !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .tab-group ul li:hover {
-    background: rgba(0, 0, 0, 0.04) !important;
-    color: #1c1917 !important;
-}
-
-.milkdown .milkdown-slash-menu .tab-group ul li.selected {
-    background: rgba(0, 255, 153, 0.08) !important;
-    color: var(--accent) !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .tab-group ul li.selected {
-    background: rgba(16, 185, 129, 0.06) !important;
-    color: #10b981 !important;
-}
-
-.milkdown .milkdown-slash-menu .menu-groups .menu-group li {
-    color: #e4e4e7 !important;
-    border-radius: 6px !important;
-    transition: all 0.2s ease !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .menu-groups .menu-group li {
-    color: #57524e !important;
-}
-
-.milkdown .milkdown-slash-menu .menu-groups .menu-group li svg {
-    color: #a1a1aa !important;
-    fill: #a1a1aa !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .menu-groups .menu-group li svg {
-    color: #78716c !important;
-    fill: #78716c !important;
-}
-
-.milkdown .milkdown-slash-menu .menu-groups .menu-group li.hover {
-    background: rgba(255, 255, 255, 0.05) !important;
-    color: #ffffff !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .menu-groups .menu-group li.hover {
-    background: rgba(0, 0, 0, 0.04) !important;
-    color: #1c1917 !important;
-}
-
-.milkdown .milkdown-slash-menu .menu-groups .menu-group li.active {
-    background: rgba(0, 255, 153, 0.08) !important;
-    color: var(--accent) !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .menu-groups .menu-group li.active {
-    background: rgba(16, 185, 129, 0.06) !important;
-    color: #10b981 !important;
-}
-
-.milkdown .milkdown-slash-menu .menu-groups .menu-group li.active svg {
-    color: var(--accent) !important;
-    fill: var(--accent) !important;
-}
-
-.theme-light .milkdown .milkdown-slash-menu .menu-groups .menu-group li.active svg {
-    color: #10b981 !important;
-    fill: #10b981 !important;
-}
-
-/* 6. Explicit Visibility State Overrides */
-.milkdown-popover[data-show="false"],
-.popover[data-show="false"],
-.prosemirror-bubble-menu[data-show="false"],
-.milkdown-toolbar[data-show="false"],
-.milkdown-slash-menu[data-show="false"],
-.milkdown-table-block .cell-handle .button-group[data-show="false"],
-.milkdown-link-preview[data-show="false"],
-.milkdown-link-edit[data-show="false"] {
-    display: none !important;
-    opacity: 0 !important;
-    visibility: hidden !important;
-    pointer-events: none !important;
-}
-
-/* 7. Table Overflow Clipping Fix for Handles */
-.milkdown .tableWrapper {
-    overflow: visible !important;
-}
-
+}

src/NexusReader.UI.Shared/wwwroot/js/milkdownWrapper.js

@@ -1,26 +1,20 @@
-// Initialize global stores on window to share state across dynamically imported module instances (preventing cache-buster isolation)
-if (typeof window !== 'undefined') {
-    if (!window.editorCache) window.editorCache = new Map();
-    if (!window.editorStates) window.editorStates = new Map();
-}
-
-const editorCache = typeof window !== 'undefined' ? window.editorCache : new Map();
-const editorStates = typeof window !== 'undefined' ? window.editorStates : new Map();
+// Map to keep track of active Crepe editor instances by elementId (container ID)
+const editors = new Map();
 
 /**
  * Asynchronously injects a stylesheet link tag into the document head
  * and returns a Promise that resolves when the stylesheet is fully loaded.
  */
-async function ensureStylesheet(href) {
-    if (document.querySelector(`link[href="${href}"]`)) {
+async function injectStylesheet(url) {
+    if (document.querySelector(`link[href="${url}"]`)) {
         return Promise.resolve();
     }
     return new Promise((resolve, reject) => {
         const link = document.createElement('link');
         link.rel = 'stylesheet';
-        link.href = href;
+        link.href = url;
         link.onload = () => resolve();
-        link.onerror = (err) => reject(new Error(`Failed to load stylesheet: ${href}. ${err}`));
+        link.onerror = (err) => reject(new Error(`Failed to load stylesheet: ${url}. ${err}`));
         document.head.appendChild(link);
     });
 }
@@ -29,69 +23,21 @@ async function ensureStylesheet(href) {
  * Initializes a Milkdown Crepe editor on the specified element.
  */
 export async function initEditor(elementId, dotNetHelper, initialMarkdown) {
-    // Check if already destroyed or initializing
-    if (editorStates.get(elementId) === 'destroyed') {
-        console.warn(`[Milkdown] initEditor called on already destroyed element: ${elementId}. Aborting.`);
-        return;
-    }
-    if (editorStates.get(elementId) === 'initializing' || editorStates.get(elementId) === 'ready') {
-        console.warn(`[Milkdown] Editor is already initializing or ready for element: ${elementId}. Ignoring.`);
-        return;
-    }
-
-    editorStates.set(elementId, 'initializing');
-
-    // Guard 1: Destroy previous cached editor instance with the same ID if it exists
-    if (editorCache.has(elementId)) {
-        console.warn(`[Milkdown] Editor instance already exists in cache for: ${elementId}. Destroying first.`);
-        await destroyEditor(elementId);
-    }
-
     const container = document.getElementById(elementId);
     if (!container) {
         console.error(`[Milkdown] Container with ID "${elementId}" not found.`);
-        editorStates.delete(elementId);
         return;
     }
 
-    // Guard 2: Clear container children to prevent double-initialization of crepe editor DOM
-    if (container.children.length > 0) {
-        console.warn(`[Milkdown] Container "${elementId}" is not empty. Clearing children before initialization.`);
-        container.innerHTML = '';
-    }
-
-    // Guard 3: Search the parent workspace card to purge any other leftover editor components
-    const parentCard = container.closest('.milkdown-premium-container') || container.parentElement;
-    if (parentCard) {
-        const existingEditors = parentCard.querySelectorAll('.milkdown, .crepe');
-        if (existingEditors.length > 0) {
-            console.warn(`[Milkdown] Found ${existingEditors.length} leftover editor DOM elements in the workspace card. Purging them.`);
-            existingEditors.forEach(el => el.remove());
-        }
-    }
-
     try {
         // Condition 2: Prevent FOUC by loading stylesheets before instantiating the editor
-        await ensureStylesheet('/_content/NexusReader.UI.Shared/css/vendor/milkdown-crepe.css');
+        await Promise.all([
+            injectStylesheet('https://esm.sh/@milkdown/crepe/theme/common/style.css'),
+            injectStylesheet('https://esm.sh/@milkdown/crepe/theme/frame.css')
+        ]);
 
-        if (editorStates.get(elementId) === 'destroyed') {
-            console.warn(`[Milkdown] Element ${elementId} destroyed during stylesheet loading. Aborting.`);
-            return;
-        }
-
-        // Dynamically import the local JS bundle
-        await import('/_content/NexusReader.UI.Shared/js/vendor/milkdown-crepe.js');
-
-        if (editorStates.get(elementId) === 'destroyed') {
-            console.warn(`[Milkdown] Element ${elementId} destroyed during crepe bundle loading. Aborting.`);
-            return;
-        }
-
-        // Get Crepe constructor from the global window.milkdownCrepe namespace
-        const Crepe = window.milkdownCrepe?.Crepe;
-        if (!Crepe) {
-            throw new Error("Crepe constructor not found on window.milkdownCrepe");
-        }
+        // Dynamically import the Crepe ESM module
+        const { Crepe } = await import('https://esm.sh/@milkdown/crepe');
 
         // Initialize the Crepe editor instance with custom ImageBlock upload handler
         const crepe = new Crepe({
@@ -101,11 +47,12 @@ export async function initEditor(elementId, dotNetHelper, initialMarkdown) {
                 [Crepe.Feature.ImageBlock]: {
                     onUpload: async (file) => {
                         try {
-                            const streamRef = DotNet.createJSStreamReference(file);
-                            const url = await dotNetHelper.invokeMethodAsync('UploadImageFromJs', file.name, file.type, streamRef);
+                            const arrayBuffer = await file.arrayBuffer();
+                            const uint8Array = new Uint8Array(arrayBuffer);
+                            const url = await dotNetHelper.invokeMethodAsync('UploadImageFromJs', file.name, file.type, uint8Array);
                             return url;
                         } catch (err) {
-                            console.error("[Milkdown] Failed to upload image from JS (onUpload):", err);
+                            console.error("[Milkdown] Failed to upload image from JS:", err);
                             throw err;
                         }
                     }
@@ -113,68 +60,14 @@ export async function initEditor(elementId, dotNetHelper, initialMarkdown) {
             }
         });
 
-        // Configure custom uploader using the uploadConfig context slice
-        crepe.editor.config((ctx) => {
-            try {
-                ctx.update('uploadConfig', (prev) => ({
-                    ...prev,
-                    uploader: async (files, schema) => {
-                        const nodes = [];
-                        for (let i = 0; i < files.length; i++) {
-                            const file = files[i];
-                            if (file.type.startsWith('image/')) {
-                                try {
-                                    const streamRef = DotNet.createJSStreamReference(file);
-                                    const uploadedUrl = await dotNetHelper.invokeMethodAsync('UploadImageFromJs', file.name, file.type, streamRef);
-                                    if (uploadedUrl) {
-                                        const node = schema.nodes.image.create({ src: uploadedUrl, alt: file.name });
-                                        nodes.push(node);
-                                    }
-                                } catch (err) {
-                                    console.error("[Milkdown] Failed to upload image in custom uploader:", err);
-                                }
-                            }
-                        }
-                        return nodes;
-                    }
-                }));
-            } catch (err) {
-                console.error("[Milkdown] Failed to configure uploadConfig uploader:", err);
-            }
-        });
-
-        // Hook into the Crepe content update listener system with 300ms JS debounce
-        let debounceTimeout = null;
-        crepe.on((listener) => {
-            listener.markdownUpdated((ctx, markdown, prevMarkdown) => {
-                if (debounceTimeout) {
-                    clearTimeout(debounceTimeout);
-                }
-                debounceTimeout = setTimeout(() => {
-                    if (editorStates.get(elementId) === 'destroyed') return;
-                    dotNetHelper.invokeMethodAsync('OnEditorContentChanged', markdown)
-                        .catch(err => console.error("[Milkdown] Failed to notify editor content changed:", err));
-                }, 300);
-            });
-        });
-
         // Store the editor instance in the map
-        editorCache.set(elementId, crepe);
+        editors.set(elementId, crepe);
 
         // Create the editor view asynchronously
         await crepe.create();
 
-        if (editorStates.get(elementId) === 'destroyed') {
-            console.warn(`[Milkdown] Element ${elementId} destroyed during crepe.create(). Cleaning up.`);
-            await crepe.destroy();
-            editorCache.delete(elementId);
-            return;
-        }
-
-        editorStates.set(elementId, 'ready');
         console.log(`[Milkdown] Editor successfully initialized on element: ${elementId}`);
     } catch (error) {
-        editorStates.delete(elementId);
         console.error(`[Milkdown] Failed to initialize editor on "${elementId}":`, error);
     }
 }
@@ -183,7 +76,7 @@ export async function initEditor(elementId, dotNetHelper, initialMarkdown) {
  * Retrieves the current Markdown content from a specific editor instance.
  */
 export function getMarkdownContent(elementId) {
-    const crepe = editorCache.get(elementId);
+    const crepe = editors.get(elementId);
     if (!crepe) {
         console.warn(`[Milkdown] No editor instance found for element: ${elementId}`);
         return "";
@@ -195,9 +88,7 @@ export function getMarkdownContent(elementId) {
  * Safely disposes of the editor instance to prevent memory leaks in WASM.
  */
 export async function destroyEditor(elementId) {
-    editorStates.set(elementId, 'destroyed');
-
-    const crepe = editorCache.get(elementId);
+    const crepe = editors.get(elementId);
     if (crepe) {
         try {
             await crepe.destroy();
@@ -205,40 +96,6 @@ export async function destroyEditor(elementId) {
         } catch (error) {
             console.error(`[Milkdown] Error destroying editor for element "${elementId}":`, error);
         }
-        editorCache.delete(elementId);
-    }
-    
-    // Explicitly clean up container DOM children
-    const container = document.getElementById(elementId);
-    if (container) {
-        container.innerHTML = '';
+        editors.delete(elementId);
     }
 }
-
-/**
- * Safely retrieves all localStorage keys starting with the "nexus-bkp-" prefix.
- */
-export function getBackupKeys() {
-    const keys = [];
-    try {
-        for (let i = 0; i < localStorage.length; i++) {
-            const key = localStorage.key(i);
-            if (key && key.startsWith('nexus-bkp-')) {
-                keys.push(key);
-            }
-        }
-    } catch (err) {
-        console.error("[Milkdown] Error listing localStorage keys:", err);
-    }
-    return keys;
-}
-
-// Attach to window for global access (especially from DisposeAsync when module reference is null)
-if (typeof window !== 'undefined') {
-    window.milkdownWrapper = {
-        initEditor,
-        getMarkdownContent,
-        destroyEditor,
-        getBackupKeys
-    };
-}

src/NexusReader.Web/Program.cs

@@ -91,10 +91,6 @@ builder.Services.AddCascadingAuthenticationState();
 
 builder.Services.AddApplication();
 builder.Services.AddInfrastructure(builder.Configuration);
-builder.Services.AddHealthChecks()
-    .AddCheck<NexusReader.Web.Services.DatabaseHealthCheck>("Database")
-    .AddCheck<NexusReader.Web.Services.QdrantHealthCheck>("Qdrant")
-    .AddCheck<NexusReader.Web.Services.Neo4jHealthCheck>("Neo4j");
 
 builder.Services.AddMediatR(cfg => cfg.RegisterServicesFromAssemblies(
     NexusReader.Application.DependencyInjection.Assembly,
@@ -299,7 +295,6 @@ if (!allowRegistration || !allowPasswordReset)
 }
 
 app.MapStaticAssets();
-app.MapHealthChecks("/health");
 app.MapHub<NexusReader.Infrastructure.RealTime.SyncHub>("/synchub");
 
 // API endpoint for WASM client to fetch EPUB content
@@ -498,132 +493,6 @@ app.MapGet("/api/library/books", async (ClaimsPrincipal user, IMediator mediator
     return Results.BadRequest(errorMsg);
 }).RequireAuthorization();
 
-app.MapGet("/api/creator/dashboard", async (ClaimsPrincipal user, IMediator mediator) =>
-{
-    var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
-    if (string.IsNullOrEmpty(userId)) return Results.Unauthorized();
-
-    var tenantId = user.FindFirstValue("TenantId") ?? "global";
-
-    var result = await mediator.Send(new NexusReader.Application.Queries.Creator.GetCreatorDashboardDataQuery(userId, tenantId));
-    if (result.IsSuccess) return Results.Ok(result.Value);
-
-    var errorMsg = result.Errors.Count > 0 ? result.Errors[0].Message : "Unknown server error";
-    return Results.BadRequest(errorMsg);
-}).RequireAuthorization();
-
-app.MapGet("/api/creator/books/{bookId:guid}/revisions", async (Guid bookId, ClaimsPrincipal user, IMediator mediator) =>
-{
-    var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
-    if (string.IsNullOrEmpty(userId)) return Results.Unauthorized();
-
-    var tenantId = user.FindFirstValue("TenantId") ?? "global";
-
-    var result = await mediator.Send(new NexusReader.Application.Queries.Creator.GetBookRevisionsQuery(bookId, userId, tenantId));
-    if (result.IsSuccess) return Results.Ok(result.Value);
-
-    var errorMsg = result.Errors.Count > 0 ? result.Errors[0].Message : "Unknown server error";
-    if (errorMsg.Contains("was not found", StringComparison.OrdinalIgnoreCase))
-    {
-        return Results.NotFound(errorMsg);
-    }
-    return Results.BadRequest(errorMsg);
-}).RequireAuthorization();
-
-app.MapPost("/api/creator/books/{bookId:guid}/publish", async (Guid bookId, [FromQuery] string version, ClaimsPrincipal user, IMediator mediator) =>
-{
-    var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
-    if (string.IsNullOrEmpty(userId)) return Results.Unauthorized();
-
-    var tenantId = user.FindFirstValue("TenantId") ?? "global";
-
-    if (string.IsNullOrWhiteSpace(version))
-    {
-        return Results.BadRequest("Version string is required.");
-    }
-
-    var result = await mediator.Send(new NexusReader.Application.Features.Books.Commands.PublishBookVersionCommand(bookId, version, userId, tenantId));
-    if (result.IsSuccess) return Results.Ok();
-
-    var errorMsg = result.Errors.Count > 0 ? result.Errors[0].Message : "Unknown server error";
-    if (errorMsg.Contains("was not found", StringComparison.OrdinalIgnoreCase))
-    {
-        return Results.NotFound(errorMsg);
-    }
-    return Results.BadRequest(errorMsg);
-}).RequireAuthorization();
-
-app.MapPost("/api/creator/books", async (
-    [FromBody] NexusReader.Application.DTOs.Creator.CreateBookRequestDto request,
-    ClaimsPrincipal user,
-    IMediator mediator) =>
-{
-    var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
-    if (string.IsNullOrEmpty(userId)) return Results.Unauthorized();
-
-    var tenantId = user.FindFirstValue("TenantId") ?? "global";
-
-    var result = await mediator.Send(new NexusReader.Application.Features.Books.Commands.CreateBookCommand(
-        request.Title,
-        request.Description,
-        userId,
-        tenantId
-    ));
-
-    if (result.IsSuccess)
-    {
-        return Results.Ok(new NexusReader.Application.DTOs.Creator.CreateBookResponseDto(result.Value));
-    }
-
-    var errorMsg = result.Errors.Count > 0 ? result.Errors[0].Message : "Unknown server error";
-    return Results.BadRequest(errorMsg);
-}).RequireAuthorization();
-
-app.MapGet("/api/creator/books/{bookId:guid}/chapters", async (Guid bookId, ClaimsPrincipal user, IDbContextFactory<AppDbContext> dbContextFactory) =>
-{
-    var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
-    if (string.IsNullOrEmpty(userId)) return Results.Unauthorized();
-
-    using var dbContext = await dbContextFactory.CreateDbContextAsync();
-    var book = await dbContext.Books
-        .Include(b => b.CurrentDraftRevision)
-            .ThenInclude(r => r!.Chapters)
-        .FirstOrDefaultAsync(b => b.Id == bookId && b.UserId == userId);
-
-    if (book == null) return Results.NotFound();
-    if (book.CurrentDraftRevision == null) return Results.BadRequest("No active draft revision.");
-
-    var chapters = book.CurrentDraftRevision.Chapters
-        .OrderBy(c => c.SortOrder)
-        .Select(c => new { c.Id, c.Title, c.SortOrder })
-        .ToList();
-
-    return Results.Ok(chapters);
-}).RequireAuthorization();
-
-app.MapGet("/api/chapters/{id:guid}", async (Guid id, ClaimsPrincipal user, IDbContextFactory<AppDbContext> dbContextFactory) =>
-{
-    var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
-    if (string.IsNullOrEmpty(userId)) return Results.Unauthorized();
-
-    using var dbContext = await dbContextFactory.CreateDbContextAsync();
-    
-    var chapter = await dbContext.Chapters
-        .Include(c => c.BookRevision)
-            .ThenInclude(r => r.Book)
-        .FirstOrDefaultAsync(c => c.Id == id);
-
-    if (chapter == null) return Results.NotFound();
-
-    // Verify ownership
-    if (chapter.BookRevision.Book.UserId != userId)
-    {
-        return Results.Forbid();
-    }
-
-    return Results.Ok(new { chapter.Id, chapter.Title, chapter.MarkdownContent });
-}).RequireAuthorization();
-
 app.MapPost("/api/library/purchase", async (
     ClaimsPrincipal user,
     [FromBody] PurchaseBookRequest request,
@@ -933,15 +802,15 @@ app.MapPost("/api/media/upload", async (
         fileBytes = memoryStream.ToArray();
     }
 
-    // Validate signature without trusting browser content-type, enforcing extension matching
-    if (!ImageValidator.ValidateImageSignature(fileBytes, file.FileName, out var detectedContentType))
+    // Validate signature
+    if (!ValidateImageSignature(fileBytes, file.ContentType))
     {
-        logger.LogWarning("File signature validation failed for file {FileName} with browser content type {ContentType}.", file.FileName, file.ContentType);
-        return Results.BadRequest("Invalid file signature or extension mismatch. Legitimate JPEG, PNG, WEBP, or GIF images only.");
+        logger.LogWarning("File signature validation failed for file {FileName} with content type {ContentType}.", file.FileName, file.ContentType);
+        return Results.BadRequest("Invalid image signature. Legitimate JPEG, PNG, or WEBP images only.");
     }
 
-    // Save using IStorageService with the verified content type
-    var fileUrl = await storageService.UploadFileAsync(fileBytes, file.FileName, detectedContentType);
+    // Save using IStorageService
+    var fileUrl = await storageService.UploadFileAsync(fileBytes, file.FileName, file.ContentType);
     return Results.Ok(new NexusReader.Application.DTOs.Media.UploadResultDto(fileUrl));
 }).DisableAntiforgery();
 
@@ -958,27 +827,6 @@ app.MapPost("/api/chapters/validate", (
     return Results.Ok(new NexusReader.Application.DTOs.Media.ValidateChapterResponse(sanitized));
 }).DisableAntiforgery();
 
-app.MapPut("/api/chapters/{id:guid}/autosave", async (
-    Guid id,
-    [Microsoft.AspNetCore.Mvc.FromBody] NexusReader.Application.DTOs.Media.AutosaveChapterRequest request,
-    IDbContextFactory<AppDbContext> dbContextFactory,
-    ILoggerFactory loggerFactory) =>
-{
-    var logger = loggerFactory.CreateLogger("ChaptersApi");
-    logger.LogInformation("Autosaving chapter {ChapterId} with content length {Length}", id, request?.MarkdownContent?.Length ?? 0);
-
-    if (request == null) return Results.BadRequest("Request content cannot be null.");
-
-    using var dbContext = await dbContextFactory.CreateDbContextAsync();
-    var chapter = await dbContext.Chapters.FindAsync(id);
-    if (chapter == null) return Results.NotFound($"Chapter with ID '{id}' was not found.");
-
-    chapter.MarkdownContent = request.MarkdownContent;
-    await dbContext.SaveChangesAsync();
-
-    return Results.Ok(new { Success = true });
-}).DisableAntiforgery();
-
 app.MapRazorComponents<App>()
     .AddInteractiveServerRenderMode()
     .AddInteractiveWebAssemblyRenderMode()
@@ -1030,56 +878,32 @@ async Task TriggerBackgroundProcessingForUnindexedBooksAsync(IServiceProvider se
     }
 }
 
-public static class ImageValidator
+static bool ValidateImageSignature(byte[] bytes, string contentType)
 {
-    public static bool ValidateImageSignature(byte[] bytes, string fileName, out string detectedContentType)
+    if (bytes.Length < 4) return false;
+
+    // Check PNG signature: 89 50 4E 47
+    if (bytes[0] == 0x89 && bytes[1] == 0x50 && bytes[2] == 0x4E && bytes[3] == 0x47)
     {
-        detectedContentType = string.Empty;
-        if (bytes.Length < 4) return false;
-
-        // Check PNG signature: 89 50 4E 47
-        if (bytes[0] == 0x89 && bytes[1] == 0x50 && bytes[2] == 0x4E && bytes[3] == 0x47)
-        {
-            detectedContentType = "image/png";
-        }
-        // Check JPEG signature: FF D8 FF
-        else if (bytes[0] == 0xFF && bytes[1] == 0xD8 && bytes[2] == 0xFF)
-        {
-            detectedContentType = "image/jpeg";
-        }
-        // Check WEBP signature: RIFF ... WEBP
-        else if (bytes.Length >= 12 &&
-                 bytes[0] == 0x52 && bytes[1] == 0x49 && bytes[2] == 0x46 && bytes[3] == 0x46 && // RIFF
-                 bytes[8] == 0x57 && bytes[9] == 0x45 && bytes[10] == 0x42 && bytes[11] == 0x50) // WEBP
-        {
-            detectedContentType = "image/webp";
-        }
-        // Check GIF signature: GIF87a or GIF89a
-        else if (bytes.Length >= 6 &&
-                 bytes[0] == 0x47 && bytes[1] == 0x49 && bytes[2] == 0x46 && bytes[3] == 0x38 &&
-                 (bytes[4] == 0x37 || bytes[4] == 0x39) && bytes[5] == 0x61)
-        {
-            detectedContentType = "image/gif";
-        }
-
-        if (string.IsNullOrEmpty(detectedContentType))
-        {
-            return false;
-        }
-
-        // Verify that the file extension matches the detected content type (extension-spoofing guard)
-        var ext = Path.GetExtension(fileName).ToLowerInvariant();
-        var isMatch = detectedContentType switch
-        {
-            "image/png" => ext == ".png",
-            "image/jpeg" => ext == ".jpg" || ext == ".jpeg",
-            "image/webp" => ext == ".webp",
-            "image/gif" => ext == ".gif",
-            _ => false
-        };
-
-        return isMatch;
+        return contentType.Equals("image/png", StringComparison.OrdinalIgnoreCase);
     }
+
+    // Check JPEG signature: FF D8 FF
+    if (bytes[0] == 0xFF && bytes[1] == 0xD8 && bytes[2] == 0xFF)
+    {
+        return contentType.Equals("image/jpeg", StringComparison.OrdinalIgnoreCase) ||
+               contentType.Equals("image/jpg", StringComparison.OrdinalIgnoreCase);
+    }
+
+    // Check WEBP signature: RIFF ... WEBP
+    if (bytes.Length >= 12 &&
+        bytes[0] == 0x52 && bytes[1] == 0x49 && bytes[2] == 0x46 && bytes[3] == 0x46 && // RIFF
+        bytes[8] == 0x57 && bytes[9] == 0x45 && bytes[10] == 0x42 && bytes[11] == 0x50) // WEBP
+    {
+        return contentType.Equals("image/webp", StringComparison.OrdinalIgnoreCase);
+    }
+
+    return false;
 }
 
 public record KnowledgeRequest(string Text, Guid? EbookId = null);

src/NexusReader.Web/Services/DatabaseHealthCheck.cs

@@ -1,35 +0,0 @@
-using Microsoft.Extensions.Diagnostics.HealthChecks;
-using NexusReader.Data.Persistence;
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace NexusReader.Web.Services;
-
-public class DatabaseHealthCheck : IHealthCheck
-{
-    private readonly AppDbContext _dbContext;
-
-    public DatabaseHealthCheck(AppDbContext dbContext)
-    {
-        _dbContext = dbContext;
-    }
-
-    public async Task<HealthCheckResult> CheckHealthAsync(
-        HealthCheckContext context, CancellationToken cancellationToken = default)
-    {
-        try
-        {
-            var canConnect = await _dbContext.Database.CanConnectAsync(cancellationToken);
-            if (canConnect)
-            {
-                return HealthCheckResult.Healthy("Database is accessible.");
-            }
-            return HealthCheckResult.Unhealthy("Cannot connect to the database.");
-        }
-        catch (Exception ex)
-        {
-            return HealthCheckResult.Unhealthy("Database health check failed with exception.", ex);
-        }
-    }
-}

src/NexusReader.Web/Services/Neo4jHealthCheck.cs

@@ -1,31 +0,0 @@
-using Microsoft.Extensions.Diagnostics.HealthChecks;
-using Neo4j.Driver;
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace NexusReader.Web.Services;
-
-public class Neo4jHealthCheck : IHealthCheck
-{
-    private readonly IDriver _driver;
-
-    public Neo4jHealthCheck(IDriver driver)
-    {
-        _driver = driver;
-    }
-
-    public async Task<HealthCheckResult> CheckHealthAsync(
-        HealthCheckContext context, CancellationToken cancellationToken = default)
-    {
-        try
-        {
-            await _driver.VerifyConnectivityAsync();
-            return HealthCheckResult.Healthy("Neo4j database is accessible.");
-        }
-        catch (Exception ex)
-        {
-            return HealthCheckResult.Unhealthy("Neo4j database connectivity check failed.", ex);
-        }
-    }
-}

src/NexusReader.Web/Services/QdrantHealthCheck.cs

@@ -1,32 +0,0 @@
-using Microsoft.Extensions.Diagnostics.HealthChecks;
-using Qdrant.Client;
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace NexusReader.Web.Services;
-
-public class QdrantHealthCheck : IHealthCheck
-{
-    private readonly QdrantClient _qdrantClient;
-
-    public QdrantHealthCheck(QdrantClient qdrantClient)
-    {
-        _qdrantClient = qdrantClient;
-    }
-
-    public async Task<HealthCheckResult> CheckHealthAsync(
-        HealthCheckContext context, CancellationToken cancellationToken = default)
-    {
-        try
-        {
-            // Simple check: query collection existence to verify connection is alive
-            _ = await _qdrantClient.CollectionExistsAsync("knowledge_units", cancellationToken);
-            return HealthCheckResult.Healthy("Qdrant database is accessible.");
-        }
-        catch (Exception ex)
-        {
-            return HealthCheckResult.Unhealthy("Qdrant database health check failed.", ex);
-        }
-    }
-}

tests/NexusReader.Application.Tests/Commands/CreateBookTests.cs

@@ -1,173 +0,0 @@
-using System;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using FluentAssertions;
-using Microsoft.Data.Sqlite;
-using Microsoft.EntityFrameworkCore;
-using Moq;
-using NexusReader.Application.Features.Books.Commands;
-using NexusReader.Data.Persistence;
-using NexusReader.Domain.Entities;
-using Xunit;
-
-namespace NexusReader.Application.Tests.Commands;
-
-public class CreateBookTests : IDisposable
-{
-    private readonly SqliteConnection _connection;
-    private readonly DbContextOptions<AppDbContext> _contextOptions;
-    private readonly Mock<IDbContextFactory<AppDbContext>> _dbContextFactoryMock;
-
-    public CreateBookTests()
-    {
-        _connection = new SqliteConnection("DataSource=:memory:");
-        _connection.Open();
-
-        _contextOptions = new DbContextOptionsBuilder<AppDbContext>()
-            .UseSqlite(_connection)
-            .Options;
-
-        // Seed initial database schema
-        using var context = new AppDbContext(_contextOptions);
-        context.Database.EnsureCreated();
-
-        _dbContextFactoryMock = new Mock<IDbContextFactory<AppDbContext>>();
-        _dbContextFactoryMock.Setup(f => f.CreateDbContextAsync(It.IsAny<CancellationToken>()))
-            .ReturnsAsync(() => new AppDbContext(_contextOptions));
-    }
-
-    private NexusUser SeedUser(string userId, string tenantId)
-    {
-        var user = new NexusUser
-        {
-            Id = userId,
-            UserName = $"user_{userId}",
-            Email = $"{userId}@example.com",
-            TenantId = tenantId,
-            SubscriptionPlanId = 1
-        };
-
-        using var context = new AppDbContext(_contextOptions);
-        context.Users.Add(user);
-        context.SaveChanges();
-        return user;
-    }
-
-    [Fact]
-    public async Task Handle_WithValidCommand_SuccessfullyCreatesBookRevisionAndIntroductionChapter()
-    {
-        // Arrange
-        var userId = "creator-123";
-        var tenantId = "tenant-abc";
-        SeedUser(userId, tenantId);
-
-        var command = new CreateBookCommand(
-            Title: "The Art of Agentic Systems",
-            Description: "A masterclass on building self-healing AI agents.",
-            UserId: userId,
-            TenantId: tenantId
-        );
-
-        var handler = new CreateBookCommandHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(command, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeTrue();
-        result.Value.Should().NotBeEmpty();
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            var book = await context.Books
-                .Include(b => b.CurrentDraftRevision)
-                    .ThenInclude(r => r!.Chapters)
-                .FirstOrDefaultAsync(b => b.Id == result.Value);
-
-            book.Should().NotBeNull();
-            book!.Title.Should().Be("The Art of Agentic Systems");
-            book.UserId.Should().Be(userId);
-            book.TenantId.Should().Be(tenantId);
-            book.CurrentDraftRevisionId.Should().NotBeNull();
-
-            var revision = book.CurrentDraftRevision;
-            revision.Should().NotBeNull();
-            revision!.VersionString.Should().Be("Working Draft");
-            revision.IsPublished.Should().BeFalse();
-            revision.BookId.Should().Be(book.Id);
-
-            revision.Chapters.Should().HaveCount(1);
-            var chapter = revision.Chapters.First();
-            chapter.Title.Should().Be("Introduction");
-            chapter.MarkdownContent.Should().Be("# Introduction\nStart writing here...");
-            chapter.SortOrder.Should().Be(1);
-        }
-    }
-
-    [Fact]
-    public async Task Handle_WithEmptyTitle_ReturnsFailureResult()
-    {
-        // Arrange
-        var command = new CreateBookCommand(
-            Title: "",
-            Description: "No title",
-            UserId: "user-1",
-            TenantId: "tenant-1"
-        );
-
-        var handler = new CreateBookCommandHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(command, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeFalse();
-        result.Errors.Should().NotBeEmpty();
-        result.Errors.First().Message.Should().Contain("title is required");
-    }
-
-    [Fact]
-    public async Task Handle_OnDatabaseViolation_RollsBackTransaction()
-    {
-        // Arrange
-        // We trigger a database violation by not seeding the user 'missing-user'
-        // and letting the foreign key constraint fail (if SQLite enforces it).
-        // If foreign keys aren't strictly enforced on SQLite by default without PRAGMA,
-        // we can check if it rolls back upon other violations, or manually verify error handling.
-        var command = new CreateBookCommand(
-            Title: "Violating Book",
-            Description: "Triggering constraint failure",
-            UserId: "non-existent-user-id-constraint",
-            TenantId: "tenant-1"
-        );
-
-        // Let's force foreign key constraints on SQLite to verify rollback
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Database.ExecuteSqlRaw("PRAGMA foreign_keys = ON;");
-        }
-
-        var handler = new CreateBookCommandHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(command, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeFalse();
-        result.Errors.Should().NotBeEmpty();
-
-        // Ensure nothing was committed to the DB
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            var books = await context.Books.ToListAsync();
-            books.Should().BeEmpty();
-        }
-    }
-
-    public void Dispose()
-    {
-        _connection.Close();
-        _connection.Dispose();
-    }
-}

tests/NexusReader.Application.Tests/Commands/PublishBookVersionTests.cs

@@ -1,297 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using FluentAssertions;
-using Microsoft.Data.Sqlite;
-using Microsoft.EntityFrameworkCore;
-using Moq;
-using NexusReader.Application.Features.Books.Commands;
-using NexusReader.Data.Persistence;
-using NexusReader.Domain.Entities;
-using NexusReader.Domain.Exceptions;
-using Xunit;
-
-namespace NexusReader.Application.Tests.Commands;
-
-public class PublishBookVersionTests : IDisposable
-{
-    private readonly SqliteConnection _connection;
-    private readonly DbContextOptions<AppDbContext> _contextOptions;
-    private readonly Mock<IDbContextFactory<AppDbContext>> _dbContextFactoryMock;
-
-    public PublishBookVersionTests()
-    {
-        _connection = new SqliteConnection("DataSource=:memory:");
-        _connection.Open();
-
-        _contextOptions = new DbContextOptionsBuilder<AppDbContext>()
-            .UseSqlite(_connection)
-            .Options;
-
-        // Seed initial database schema
-        using var context = new AppDbContext(_contextOptions);
-        context.Database.EnsureCreated();
-
-        _dbContextFactoryMock = new Mock<IDbContextFactory<AppDbContext>>();
-        _dbContextFactoryMock.Setup(f => f.CreateDbContextAsync(It.IsAny<CancellationToken>()))
-            .ReturnsAsync(() => new AppDbContext(_contextOptions));
-    }
-
-    [Fact]
-    public async Task Handle_WithValidBookAndChapters_CorrectlyPublishesAndClonesChaptersWithNewGuids()
-    {
-        // Arrange
-        var bookId = Guid.NewGuid();
-        var userId = "test-user-123";
-        var tenantId = "test-tenant-456";
-
-        var user = new NexusUser
-        {
-            Id = userId,
-            UserName = "testuser",
-            Email = "test@example.com",
-            TenantId = tenantId,
-            SubscriptionPlanId = 1
-        };
-
-        var book = new Book
-        {
-            Id = bookId,
-            Title = "My Epic Book",
-            UserId = userId,
-            TenantId = tenantId
-        };
-
-        var originalDraftRevision = new BookRevision
-        {
-            Id = Guid.NewGuid(),
-            BookId = bookId,
-            VersionString = "Working Draft",
-            IsPublished = false,
-            CreatedAt = DateTime.UtcNow
-        };
-
-        var oldChapterId1 = Guid.NewGuid();
-        var oldChapterId2 = Guid.NewGuid();
-
-        var chapter1 = new Chapter
-        {
-            Id = oldChapterId1,
-            BookRevisionId = originalDraftRevision.Id,
-            Title = "Chapter 1: The Beginning",
-            MarkdownContent = "Once upon a time...",
-            SortOrder = 1
-        };
-
-        var chapter2 = new Chapter
-        {
-            Id = oldChapterId2,
-            BookRevisionId = originalDraftRevision.Id,
-            Title = "Chapter 2: The Middle",
-            MarkdownContent = "Interesting things happened.",
-            SortOrder = 2
-        };
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Users.Add(user);
-            context.Books.Add(book);
-            context.BookRevisions.Add(originalDraftRevision);
-            context.Chapters.Add(chapter1);
-            context.Chapters.Add(chapter2);
-            await context.SaveChangesAsync();
-
-            // Link the book's draft revision
-            var dbBook = await context.Books.FindAsync(bookId);
-            dbBook!.CurrentDraftRevisionId = originalDraftRevision.Id;
-            await context.SaveChangesAsync();
-        }
-
-        var command = new PublishBookVersionCommand(
-            BookId: bookId,
-            CustomVersionString: "v1.0.0",
-            UserId: userId,
-            TenantId: tenantId
-        );
-
-        var handler = new PublishBookVersionCommandHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(command, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeTrue();
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            var updatedBook = await context.Books
-                .Include(b => b.Revisions)
-                    .ThenInclude(r => r.Chapters)
-                .FirstOrDefaultAsync(b => b.Id == bookId);
-
-            updatedBook.Should().NotBeNull();
-            updatedBook!.LivePublishedRevisionId.Should().Be(originalDraftRevision.Id);
-            updatedBook.CurrentDraftRevisionId.Should().NotBeNull();
-            updatedBook.CurrentDraftRevisionId.Should().NotBe(originalDraftRevision.Id);
-
-            // Fetch the old draft revision (now frozen / published)
-            var oldDraft = updatedBook.Revisions.FirstOrDefault(r => r.Id == originalDraftRevision.Id);
-            oldDraft.Should().NotBeNull();
-            oldDraft!.IsPublished.Should().BeTrue();
-            oldDraft.VersionString.Should().Be("v1.0.0");
-            oldDraft.PublishedAt.Should().NotBeNull();
-
-            // Fetch the new working draft revision
-            var newDraft = updatedBook.Revisions.FirstOrDefault(r => r.Id == updatedBook.CurrentDraftRevisionId);
-            newDraft.Should().NotBeNull();
-            newDraft!.IsPublished.Should().BeFalse();
-            newDraft.VersionString.Should().Be("Working Draft");
-
-            // Verify chapters were deep copied and received brand new GUIDs (Identity Reset)
-            newDraft.Chapters.Should().HaveCount(2);
-
-            var clonedChapter1 = newDraft.Chapters.FirstOrDefault(c => c.SortOrder == 1);
-            clonedChapter1.Should().NotBeNull();
-            clonedChapter1!.Title.Should().Be("Chapter 1: The Beginning");
-            clonedChapter1.MarkdownContent.Should().Be("Once upon a time...");
-            clonedChapter1.Id.Should().NotBe(oldChapterId1); // GUID must be regenerated
-            clonedChapter1.BookRevisionId.Should().Be(newDraft.Id);
-
-            var clonedChapter2 = newDraft.Chapters.FirstOrDefault(c => c.SortOrder == 2);
-            clonedChapter2.Should().NotBeNull();
-            clonedChapter2!.Title.Should().Be("Chapter 2: The Middle");
-            clonedChapter2.MarkdownContent.Should().Be("Interesting things happened.");
-            clonedChapter2.Id.Should().NotBe(oldChapterId2); // GUID must be regenerated
-            clonedChapter2.BookRevisionId.Should().Be(newDraft.Id);
-        }
-    }
-
-    [Fact]
-    public async Task Handle_WithMismatchedTenantId_ReturnsFailure()
-    {
-        // Arrange
-        var bookId = Guid.NewGuid();
-        var userId = "test-user-123";
-        var tenantId = "test-tenant-456";
-
-        var user = new NexusUser
-        {
-            Id = userId,
-            UserName = "testuser",
-            Email = "test@example.com",
-            TenantId = tenantId,
-            SubscriptionPlanId = 1
-        };
-
-        var book = new Book
-        {
-            Id = bookId,
-            Title = "My Epic Book",
-            UserId = userId,
-            TenantId = tenantId
-        };
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Users.Add(user);
-            context.Books.Add(book);
-            await context.SaveChangesAsync();
-        }
-
-        // Send command with a different TenantId to check multi-tenancy isolation
-        var command = new PublishBookVersionCommand(
-            BookId: bookId,
-            CustomVersionString: "v1.0.0",
-            UserId: userId,
-            TenantId: "different-tenant-789"
-        );
-
-        var handler = new PublishBookVersionCommandHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(command, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeFalse();
-        result.Errors.Should().Contain(e => e.Message.Contains("was not found"));
-    }
-
-    [Fact]
-    public async Task Handle_WithMismatchedUserId_ReturnsFailure()
-    {
-        // Arrange
-        var bookId = Guid.NewGuid();
-        var userId = "test-user-123";
-        var tenantId = "test-tenant-456";
-
-        var user = new NexusUser
-        {
-            Id = userId,
-            UserName = "testuser",
-            Email = "test@example.com",
-            TenantId = tenantId,
-            SubscriptionPlanId = 1
-        };
-
-        var book = new Book
-        {
-            Id = bookId,
-            Title = "My Epic Book",
-            UserId = userId,
-            TenantId = tenantId
-        };
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Users.Add(user);
-            context.Books.Add(book);
-            await context.SaveChangesAsync();
-        }
-
-        // Send command with a different UserId to check multi-tenancy isolation
-        var command = new PublishBookVersionCommand(
-            BookId: bookId,
-            CustomVersionString: "v1.0.0",
-            UserId: "different-user-789",
-            TenantId: tenantId
-        );
-
-        var handler = new PublishBookVersionCommandHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(command, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeFalse();
-        result.Errors.Should().Contain(e => e.Message.Contains("was not found"));
-    }
-
-    [Fact]
-    public async Task Handle_WithNonExistentBook_ReturnsFailure()
-    {
-        // Arrange
-        var command = new PublishBookVersionCommand(
-            BookId: Guid.NewGuid(),
-            CustomVersionString: "v1.0.0",
-            UserId: "user-1",
-            TenantId: "tenant-1"
-        );
-
-        var handler = new PublishBookVersionCommandHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(command, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeFalse();
-        result.Errors.Should().Contain(e => e.Message.Contains("was not found"));
-    }
-
-    public void Dispose()
-    {
-        _connection.Close();
-        _connection.Dispose();
-    }
-}

tests/NexusReader.Application.Tests/NexusReader.Application.Tests.csproj

@@ -17,6 +17,5 @@
     <ProjectReference Include="..\..\src\NexusReader.Application\NexusReader.Application.csproj" />
     <ProjectReference Include="..\..\src\NexusReader.Infrastructure\NexusReader.Infrastructure.csproj" />
     <ProjectReference Include="..\..\src\NexusReader.UI.Shared\NexusReader.UI.Shared.csproj" />
-    <ProjectReference Include="..\..\src\NexusReader.Web\NexusReader.Web.csproj" />
   </ItemGroup>
 </Project>

tests/NexusReader.Application.Tests/Queries/CheckDatabaseTest.cs

@@ -10,7 +10,7 @@ namespace NexusReader.Application.Tests.Queries;
 
 public class CheckDatabaseTest
 {
-    [Fact(Skip = "Requires live Postgres database in Docker")]
+    [Fact]
     public async Task PrintDatabaseStats()
     {
         var configJson = await File.ReadAllTextAsync("../../../../../src/NexusReader.Web/appsettings.json");

tests/NexusReader.Application.Tests/Queries/CreatorDashboardTests.cs

@@ -1,280 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using FluentAssertions;
-using Microsoft.Data.Sqlite;
-using Microsoft.EntityFrameworkCore;
-using Moq;
-using NexusReader.Application.Queries.Creator;
-using NexusReader.Data.Persistence;
-using NexusReader.Domain.Entities;
-using NexusReader.Domain.Exceptions;
-using Xunit;
-
-namespace NexusReader.Application.Tests.Queries;
-
-public class CreatorDashboardTests : IDisposable
-{
-    private readonly SqliteConnection _connection;
-    private readonly DbContextOptions<AppDbContext> _contextOptions;
-    private readonly Mock<IDbContextFactory<AppDbContext>> _dbContextFactoryMock;
-
-    public CreatorDashboardTests()
-    {
-        _connection = new SqliteConnection("DataSource=:memory:");
-        _connection.Open();
-
-        _contextOptions = new DbContextOptionsBuilder<AppDbContext>()
-            .UseSqlite(_connection)
-            .Options;
-
-        // Seed initial database schema
-        using var context = new AppDbContext(_contextOptions);
-        context.Database.EnsureCreated();
-
-        _dbContextFactoryMock = new Mock<IDbContextFactory<AppDbContext>>();
-        _dbContextFactoryMock.Setup(f => f.CreateDbContextAsync(It.IsAny<CancellationToken>()))
-            .ReturnsAsync(() => new AppDbContext(_contextOptions));
-    }
-
-    private NexusUser CreateTestUser(string userId, string tenantId)
-    {
-        return new NexusUser
-        {
-            Id = userId,
-            UserName = $"user_{userId}",
-            Email = $"{userId}@example.com",
-            TenantId = tenantId,
-            SubscriptionPlanId = 1
-        };
-    }
-
-    [Fact]
-    public async Task GetCreatorDashboardData_WithValidUser_ProjectsCorrectlyAndNeverLoadsMarkdownToTracker()
-    {
-        // Arrange
-        var userId = "creator-123";
-        var tenantId = "tenant-abc";
-        var bookId = Guid.NewGuid();
-
-        var user = CreateTestUser(userId, tenantId);
-
-        var book = new Book
-        {
-            Id = bookId,
-            Title = "Authored Masterpiece",
-            UserId = userId,
-            TenantId = tenantId
-        };
-
-        var draft = new BookRevision
-        {
-            Id = Guid.NewGuid(),
-            BookId = bookId,
-            VersionString = "Working Draft",
-            IsPublished = false,
-            CreatedAt = DateTime.UtcNow
-        };
-
-        // Standard markdown content (length 58 characters -> estimated word count: 9 words)
-        var chapter = new Chapter
-        {
-            Id = Guid.NewGuid(),
-            BookRevisionId = draft.Id,
-            Title = "Chapter One",
-            MarkdownContent = "This is a content snippet that contains exactly ten words.", // 58 chars
-            SortOrder = 1
-        };
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Users.Add(user);
-            context.Books.Add(book);
-            context.BookRevisions.Add(draft);
-            context.Chapters.Add(chapter);
-            await context.SaveChangesAsync();
-
-            // Link draft revision
-            var dbBook = await context.Books.FindAsync(bookId);
-            dbBook!.CurrentDraftRevisionId = draft.Id;
-            await context.SaveChangesAsync();
-        }
-
-        var query = new GetCreatorDashboardDataQuery(userId, tenantId);
-        var handler = new GetCreatorDashboardDataQueryHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(query, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeTrue();
-        result.Value.Should().NotBeNull();
-        result.Value.Books.Should().HaveCount(1);
-
-        var bookDto = result.Value.Books.First();
-        bookDto.Title.Should().Be("Authored Masterpiece");
-        bookDto.WordCount.Should().Be(58 / 6); // projected word count calculation check
-        bookDto.AggregatedReads.Should().Be(Math.Abs(bookId.GetHashCode() % 1000) + 120);
-
-        // Verify metrics are calculated
-        result.Value.Metrics.TotalReads.Should().Be(bookDto.AggregatedReads);
-        result.Value.Metrics.ActiveReaders.Should().BeGreaterThan(0);
-        result.Value.Metrics.GrossRevenue.Should().Be(bookDto.AggregatedReads * 1.49m);
-        result.Value.Metrics.AvgReadTimeMinutes.Should().Be(Math.Round((58 / 6) / 250.0, 1));
-    }
-
-    [Fact]
-    public async Task GetCreatorDashboardData_EnforcesTenantAndUserBoundaries()
-    {
-        // Arrange
-        var userId = "creator-123";
-        var tenantId = "tenant-abc";
-        var bookId = Guid.NewGuid();
-
-        var user = CreateTestUser(userId, tenantId);
-
-        var book = new Book
-        {
-            Id = bookId,
-            Title = "Authored Masterpiece",
-            UserId = userId,
-            TenantId = tenantId
-        };
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Users.Add(user);
-            context.Books.Add(book);
-            await context.SaveChangesAsync();
-        }
-
-        // Query with mismatched tenant ID
-        var queryMismatchedTenant = new GetCreatorDashboardDataQuery(userId, "different-tenant");
-        var handler = new GetCreatorDashboardDataQueryHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var resultMismatchedTenant = await handler.Handle(queryMismatchedTenant, CancellationToken.None);
-
-        // Assert
-        resultMismatchedTenant.IsSuccess.Should().BeTrue();
-        resultMismatchedTenant.Value.Books.Should().BeEmpty();
-        resultMismatchedTenant.Value.Metrics.TotalReads.Should().Be(0);
-
-        // Query with mismatched user ID
-        var queryMismatchedUser = new GetCreatorDashboardDataQuery("different-user", tenantId);
-
-        // Act
-        var resultMismatchedUser = await handler.Handle(queryMismatchedUser, CancellationToken.None);
-
-        // Assert
-        resultMismatchedUser.IsSuccess.Should().BeTrue();
-        resultMismatchedUser.Value.Books.Should().BeEmpty();
-    }
-
-    [Fact]
-    public async Task GetBookRevisions_WithValidBook_ReturnsRevisionsOrderedByDate()
-    {
-        // Arrange
-        var userId = "creator-123";
-        var tenantId = "tenant-abc";
-        var bookId = Guid.NewGuid();
-
-        var user = CreateTestUser(userId, tenantId);
-
-        var book = new Book
-        {
-            Id = bookId,
-            Title = "Authored Masterpiece",
-            UserId = userId,
-            TenantId = tenantId
-        };
-
-        var revision1 = new BookRevision
-        {
-            Id = Guid.NewGuid(),
-            BookId = bookId,
-            VersionString = "v1.0.0",
-            IsPublished = true,
-            CreatedAt = DateTime.UtcNow.AddMinutes(-5),
-            PublishedAt = DateTime.UtcNow.AddMinutes(-5)
-        };
-
-        var revision2 = new BookRevision
-        {
-            Id = Guid.NewGuid(),
-            BookId = bookId,
-            VersionString = "Working Draft",
-            IsPublished = false,
-            CreatedAt = DateTime.UtcNow
-        };
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Users.Add(user);
-            context.Books.Add(book);
-            context.BookRevisions.Add(revision1);
-            context.BookRevisions.Add(revision2);
-            await context.SaveChangesAsync();
-        }
-
-        var query = new GetBookRevisionsQuery(bookId, userId, tenantId);
-        var handler = new GetBookRevisionsQueryHandler(_dbContextFactoryMock.Object);
-
-        // Act
-        var result = await handler.Handle(query, CancellationToken.None);
-
-        // Assert
-        result.IsSuccess.Should().BeTrue();
-        result.Value.Should().HaveCount(2);
-        // Ordered by CreatedAt descending
-        result.Value[0].VersionString.Should().Be("Working Draft");
-        result.Value[1].VersionString.Should().Be("v1.0.0");
-    }
-
-    [Fact]
-    public async Task GetBookRevisions_WithMismatchedUserOrTenant_ReturnsFailure()
-    {
-        // Arrange
-        var userId = "creator-123";
-        var tenantId = "tenant-abc";
-        var bookId = Guid.NewGuid();
-
-        var user = CreateTestUser(userId, tenantId);
-
-        var book = new Book
-        {
-            Id = bookId,
-            Title = "Authored Masterpiece",
-            UserId = userId,
-            TenantId = tenantId
-        };
-
-        using (var context = new AppDbContext(_contextOptions))
-        {
-            context.Users.Add(user);
-            context.Books.Add(book);
-            await context.SaveChangesAsync();
-        }
-
-        var handler = new GetBookRevisionsQueryHandler(_dbContextFactoryMock.Object);
-
-        // Act & Assert
-        var queryMismatchedTenant = new GetBookRevisionsQuery(bookId, userId, "different-tenant");
-        var resultTenant = await handler.Handle(queryMismatchedTenant, CancellationToken.None);
-        resultTenant.IsSuccess.Should().BeFalse();
-        resultTenant.Errors.Should().Contain(e => e.Message.Contains("was not found"));
-
-        var queryMismatchedUser = new GetBookRevisionsQuery(bookId, "different-user", tenantId);
-        var resultUser = await handler.Handle(queryMismatchedUser, CancellationToken.None);
-        resultUser.IsSuccess.Should().BeFalse();
-        resultUser.Errors.Should().Contain(e => e.Message.Contains("was not found"));
-    }
-
-    public void Dispose()
-    {
-        _connection.Close();
-        _connection.Dispose();
-    }
-}

tests/NexusReader.Application.Tests/Services/AutosaveEngineTests.cs

@@ -1,61 +0,0 @@
-using System.Text.Json;
-using FluentAssertions;
-using NexusReader.Application.Common;
-using NexusReader.Application.DTOs.Media;
-using Xunit;
-
-namespace NexusReader.Application.Tests.Services;
-
-public class AutosaveEngineTests
-{
-    [Fact]
-    public void SerializeAndDeserialize_LocalBackupEnvelope_Succeeds()
-    {
-        // Arrange
-        var envelope = new LocalBackupEnvelope
-        {
-            ChapterId = Guid.NewGuid(),
-            Timestamp = DateTime.UtcNow.AddMinutes(-10),
-            MarkdownContent = "# Hello Autosave"
-        };
-
-        // Act
-        var json = JsonSerializer.Serialize(envelope, AppJsonContext.Default.LocalBackupEnvelope);
-        var deserialized = JsonSerializer.Deserialize(json, AppJsonContext.Default.LocalBackupEnvelope);
-
-        // Assert
-        deserialized.Should().NotBeNull();
-        deserialized!.ChapterId.Should().Be(envelope.ChapterId);
-        deserialized.MarkdownContent.Should().Be(envelope.MarkdownContent);
-        // Truncate milliseconds to avoid precision discrepancies in text representation
-        deserialized.Timestamp.ToUniversalTime().Date.Should().Be(envelope.Timestamp.ToUniversalTime().Date);
-    }
-
-    [Fact]
-    public void SerializeAndDeserialize_AutosaveChapterRequest_Succeeds()
-    {
-        // Arrange
-        var request = new AutosaveChapterRequest("# Content to Autosave");
-
-        // Act
-        var json = JsonSerializer.Serialize(request, AppJsonContext.Default.AutosaveChapterRequest);
-        var deserialized = JsonSerializer.Deserialize(json, AppJsonContext.Default.AutosaveChapterRequest);
-
-        // Assert
-        deserialized.Should().NotBeNull();
-        deserialized!.MarkdownContent.Should().Be(request.MarkdownContent);
-    }
-
-    [Fact]
-    public void BackupEviction_CheckAgeLogic_EvictsCorrectly()
-    {
-        // Arrange
-        var now = DateTime.UtcNow;
-        var freshTimestamp = now.AddDays(-6);
-        var expiredTimestamp = now.AddDays(-8);
-
-        // Act & Assert
-        (now - freshTimestamp).TotalDays.Should().BeLessThanOrEqualTo(7.0);
-        (now - expiredTimestamp).TotalDays.Should().BeGreaterThan(7.0);
-    }
-}

tests/NexusReader.Application.Tests/Services/HtmlSanitizerServiceTests.cs

@@ -51,20 +51,4 @@ public class HtmlSanitizerServiceTests
         result.Should().NotContain("alert");
         result.Should().Contain("<img src=\"x\">");
     }
-
-    [Fact]
-    public void Sanitize_WithMarkdownCodeBlockContainingAngleBrackets_DoesNotStripAngleBrackets()
-    {
-        // Arrange
-        var service = new HtmlSanitizerService();
-        var input = "Here is some code:\n\n```csharp\nif (x < y && y > z) { Console.WriteLine(\"test\"); }\n```";
-
-        // Act
-        var result = service.Sanitize(input);
-
-        // Assert
-        result.Should().Contain("&lt;");
-        result.Should().Contain("&gt;");
-        result.Should().NotContain("<script>");
-    }
 }

tests/NexusReader.Application.Tests/Services/ValidateImageSignatureTests.cs

@@ -1,118 +0,0 @@
-using FluentAssertions;
-using Xunit;
-
-namespace NexusReader.Application.Tests.Services;
-
-public class ValidateImageSignatureTests
-{
-    [Fact]
-    public void Validate_PNG_WithCorrectSignature_ReturnsTrue()
-    {
-        // Arrange
-        byte[] pngBytes = [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A];
-        string fileName = "image.png";
-
-        // Act
-        bool isValid = ImageValidator.ValidateImageSignature(pngBytes, fileName, out string contentType);
-
-        // Assert
-        isValid.Should().BeTrue();
-        contentType.Should().Be("image/png");
-    }
-
-    [Fact]
-    public void Validate_JPEG_WithCorrectSignature_ReturnsTrue()
-    {
-        // Arrange
-        byte[] jpegBytes = [0xFF, 0xD8, 0xFF, 0xE0, 0x00, 0x10, 0x4A, 0x46];
-        string fileName = "photo.jpg";
-
-        // Act
-        bool isValid = ImageValidator.ValidateImageSignature(jpegBytes, fileName, out string contentType);
-
-        // Assert
-        isValid.Should().BeTrue();
-        contentType.Should().Be("image/jpeg");
-    }
-
-    [Fact]
-    public void Validate_WEBP_WithCorrectSignature_ReturnsTrue()
-    {
-        // Arrange
-        byte[] webpBytes = [
-            0x52, 0x49, 0x46, 0x46, // RIFF
-            0x00, 0x00, 0x00, 0x00, // length
-            0x57, 0x45, 0x42, 0x50  // WEBP
-        ];
-        string fileName = "graphic.webp";
-
-        // Act
-        bool isValid = ImageValidator.ValidateImageSignature(webpBytes, fileName, out string contentType);
-
-        // Assert
-        isValid.Should().BeTrue();
-        contentType.Should().Be("image/webp");
-    }
-
-    [Fact]
-    public void Validate_GIF_WithCorrectSignature_ReturnsTrue()
-    {
-        // Arrange
-        byte[] gifBytes = [
-            0x47, 0x49, 0x46, 0x38, 0x39, 0x61, // GIF89a
-            0x01, 0x00, 0x01, 0x00
-        ];
-        string fileName = "animation.gif";
-
-        // Act
-        bool isValid = ImageValidator.ValidateImageSignature(gifBytes, fileName, out string contentType);
-
-        // Assert
-        isValid.Should().BeTrue();
-        contentType.Should().Be("image/gif");
-    }
-
-    [Fact]
-    public void Validate_WithMismatchingExtension_ReturnsFalse()
-    {
-        // Arrange: Valid PNG bytes but JPEG extension
-        byte[] pngBytes = [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A];
-        string fileName = "spoofed.jpg";
-
-        // Act
-        bool isValid = ImageValidator.ValidateImageSignature(pngBytes, fileName, out string contentType);
-
-        // Assert
-        isValid.Should().BeFalse();
-    }
-
-    [Fact]
-    public void Validate_WithInvalidSignature_ReturnsFalse()
-    {
-        // Arrange: Plain text bytes but PNG extension
-        byte[] txtBytes = [0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F]; // "Hello wo"
-        string fileName = "not_a_png.png";
-
-        // Act
-        bool isValid = ImageValidator.ValidateImageSignature(txtBytes, fileName, out string contentType);
-
-        // Assert
-        isValid.Should().BeFalse();
-        contentType.Should().BeEmpty();
-    }
-
-    [Fact]
-    public void Validate_WithShortBytes_ReturnsFalse()
-    {
-        // Arrange
-        byte[] shortBytes = [0x89, 0x50];
-        string fileName = "short.png";
-
-        // Act
-        bool isValid = ImageValidator.ValidateImageSignature(shortBytes, fileName, out string contentType);
-
-        // Assert
-        isValid.Should().BeFalse();
-        contentType.Should().BeEmpty();
-    }
-}