fix(arch): revert WASM proxies, restore CQRS integrity, and add EF migration for Ebook state

src/NexusReader.Data/Migrations/AppDbContextModelSnapshot.cs

@@ -193,6 +193,9 @@ namespace NexusReader.Data.Migrations
                         .IsRequired()
                         .HasColumnType("text");
 
+                    b.Property<bool>("IsReadyForReading")
+                        .HasColumnType("boolean");
+
                     b.Property<string>("LastChapter")
                         .HasMaxLength(255)
                         .HasColumnType("character varying(255)");

src/NexusReader.Data/Persistence/Migrations/20260513181743_AddEbookReadyFlag.Designer.cs

@@ -0,0 +1,703 @@
+// <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;
+using Pgvector;
+
+#nullable disable
+
+namespace NexusReader.Data.Persistence.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260513181743_AddEbookReadyFlag")]
+    partial class AddEbookReadyFlag
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.7")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.HasPostgresExtension(modelBuilder, "vector");
+            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.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>("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<string>("MetadataJson")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SourceId")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<string>("TenantId")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<int>("Type")
+                        .HasColumnType("integer");
+
+                    b.Property<Vector>("Vector")
+                        .HasColumnType("vector(768)");
+
+                    b.Property<string>("Version")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SourceId");
+
+                    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<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.Property<Vector>("Vector")
+                        .HasColumnType("vector(1536)");
+
+                    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.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.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.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/Persistence/Migrations/20260513181743_AddEbookReadyFlag.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NexusReader.Data.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddEbookReadyFlag : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "IsReadyForReading",
+                table: "Ebooks",
+                type: "boolean",
+                nullable: false,
+                defaultValue: false);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "IsReadyForReading",
+                table: "Ebooks");
+        }
+    }
+}

src/NexusReader.Web.Client/Program.cs

@@ -45,12 +45,12 @@ builder.Services.AddHttpClient("NexusAPI", client =>
 
 builder.Services.AddScoped(sp => sp.GetRequiredService<IHttpClientFactory>().CreateClient("NexusAPI"));
 
-// Real WASM implementations for application abstractions
+// Dummy registrations for server-only handlers to satisfy DI validation in WASM
 builder.Services.AddSingleton<IDbContextFactory<AppDbContext>>(new ThrowingDbContextFactory());
-builder.Services.AddScoped<IEmbeddingGenerator<string, Embedding<float>>, WasmEmbeddingGenerator>();
+builder.Services.AddSingleton<IEmbeddingGenerator<string, Embedding<float>>>(new ThrowingEmbeddingGenerator());
-builder.Services.AddScoped<IBookStorageService, WasmBookStorageService>();
+builder.Services.AddSingleton<IBookStorageService>(new ThrowingBookStorageService());
-builder.Services.AddScoped<IEbookRepository, WasmEbookRepository>();
+builder.Services.AddSingleton<IEbookRepository>(new ThrowingEbookRepository());
-builder.Services.AddScoped<ISyncBroadcaster, WasmSyncBroadcaster>();
+builder.Services.AddSingleton<ISyncBroadcaster>(new ThrowingSyncBroadcaster());
 
 builder.Services.AddApplication();
 builder.Services.AddScoped<IEpubReader, WasmEpubReader>();
@@ -60,5 +60,42 @@ await builder.Build().RunAsync();
 
 public class ThrowingDbContextFactory : IDbContextFactory<AppDbContext>
 {
-    public AppDbContext CreateDbContext() => throw new NotSupportedException("DbContext cannot be used in WASM client. Use API proxies for data access.");
+    public AppDbContext CreateDbContext() => throw new NotSupportedException("DbContext cannot be used in WASM client.");
+}
+
+public class ThrowingEmbeddingGenerator : IEmbeddingGenerator<string, Embedding<float>>
+{
+    public void Dispose() { }
+    public Task<GeneratedEmbeddings<Embedding<float>>> GenerateAsync(IEnumerable<string> values, EmbeddingGenerationOptions? options = null, CancellationToken cancellationToken = default) 
+        => throw new NotSupportedException("Embedding generation cannot be used in WASM client.");
+    public object? GetService(Type serviceType, object? serviceKey = null) => null;
+}
+
+public class ThrowingBookStorageService : IBookStorageService
+{
+    private const string ErrorMessage = "File storage operations are not supported in the WASM client. Use the API endpoint for ingestion.";
+
+    public Task<string> SaveEbookAsync(byte[] data, string fileName) => throw new NotSupportedException(ErrorMessage);
+    public Task<string> SaveEbookAsync(Stream data, string fileName) => throw new NotSupportedException(ErrorMessage);
+    public Task<string?> SaveCoverAsync(byte[] data, string fileName) => throw new NotSupportedException(ErrorMessage);
+    public Task<string?> SaveCoverAsync(Stream data, string fileName) => throw new NotSupportedException(ErrorMessage);
+}
+
+public class ThrowingEbookRepository : IEbookRepository
+{
+    private const string ErrorMessage = "Ebook repository operations are not supported in the WASM client. Use the API endpoint for data access.";
+
+    public Task<Author?> FindAuthorByNameAsync(string name, CancellationToken cancellationToken = default) => throw new NotSupportedException(ErrorMessage);
+    public void AddAuthor(Author author) => throw new NotSupportedException(ErrorMessage);
+    public void AddEbook(Ebook ebook) => throw new NotSupportedException(ErrorMessage);
+    public Task<int> SaveChangesAsync(CancellationToken cancellationToken = default) => throw new NotSupportedException(ErrorMessage);
+}
+
+public class ThrowingSyncBroadcaster : ISyncBroadcaster
+{
+    public Task BroadcastProgressAsync(string userId, string pageId, DateTime timestamp, string? excludedConnectionId, CancellationToken cancellationToken = default) 
+        => throw new NotSupportedException("Real-time broadcasting can only be performed by the server.");
+
+    public Task BroadcastIngestionProgressAsync(string userId, string message, double progress, CancellationToken cancellationToken = default)
+        => throw new NotSupportedException("Real-time broadcasting can only be performed by the server.");
 }

src/NexusReader.Web.Client/Services/WasmBookStorageService.cs

@@ -1,47 +0,0 @@
-using System.Net.Http.Json;
-using NexusReader.Application.Abstractions.Services;
-
-namespace NexusReader.Web.Client.Services;
-
-public class WasmBookStorageService : IBookStorageService
-{
-    private readonly HttpClient _httpClient;
-
-    public WasmBookStorageService(HttpClient httpClient)
-    {
-        _httpClient = httpClient;
-    }
-
-    public async Task<string> SaveEbookAsync(byte[] data, string fileName)
-    {
-        var response = await _httpClient.PostAsJsonAsync("/api/storage/save/ebook", new { data, fileName });
-        response.EnsureSuccessStatusCode();
-        var result = await response.Content.ReadFromJsonAsync<StorageResponse>();
-        return result?.Path ?? string.Empty;
-    }
-
-    public async Task<string> SaveEbookAsync(Stream data, string fileName)
-    {
-        using var ms = new MemoryStream();
-        await data.CopyToAsync(ms);
-        return await SaveEbookAsync(ms.ToArray(), fileName);
-    }
-
-    public async Task<string?> SaveCoverAsync(byte[] data, string fileName)
-    {
-        if (data == null || data.Length == 0) return null;
-        var response = await _httpClient.PostAsJsonAsync("/api/storage/save/cover", new { data, fileName });
-        response.EnsureSuccessStatusCode();
-        var result = await response.Content.ReadFromJsonAsync<StorageResponse>();
-        return result?.Path;
-    }
-
-    public async Task<string?> SaveCoverAsync(Stream data, string fileName)
-    {
-        using var ms = new MemoryStream();
-        await data.CopyToAsync(ms);
-        return await SaveCoverAsync(ms.ToArray(), fileName);
-    }
-
-    private record StorageResponse(string Path);
-}

src/NexusReader.Web.Client/Services/WasmEbookRepository.cs

@@ -1,65 +0,0 @@
-using System.Net.Http.Json;
-using NexusReader.Application.Abstractions.Persistence;
-using NexusReader.Domain.Entities;
-
-namespace NexusReader.Web.Client.Services;
-
-public class WasmEbookRepository : IEbookRepository
-{
-    private readonly HttpClient _httpClient;
-
-    public WasmEbookRepository(HttpClient httpClient)
-    {
-        _httpClient = httpClient;
-    }
-
-    public async Task<Author?> FindAuthorByNameAsync(string name, CancellationToken cancellationToken = default)
-    {
-        var response = await _httpClient.PostAsJsonAsync("/api/repository/author/find", new { name }, cancellationToken);
-        if (response.IsSuccessStatusCode)
-        {
-            return await response.Content.ReadFromJsonAsync<Author>(cancellationToken: cancellationToken);
-        }
-        return null;
-    }
-
-    public void AddAuthor(Author author)
-    {
-        // For a repository in WASM, we can't easily do 'void' fire-and-forget Add without a local state.
-        // However, we can either queue it or just do nothing if the caller expects SaveChangesAsync to handle it.
-        // But the common pattern for this app seems to be calling the API.
-        // For now, we'll assume the entity will be sent during SaveChanges or a separate command.
-        // Given the constraints, we'll mark it for later serialization or just throw if not supported.
-        // Better yet: we'll implement a 'Real' enough version that tracks changes locally.
-        _stagedAuthors.Add(author);
-    }
-
-    public void AddEbook(Ebook ebook)
-    {
-        _stagedEbooks.Add(ebook);
-    }
-
-    private readonly List<Author> _stagedAuthors = new();
-    private readonly List<Ebook> _stagedEbooks = new();
-
-    public async Task<int> SaveChangesAsync(CancellationToken cancellationToken = default)
-    {
-        int count = 0;
-        foreach (var author in _stagedAuthors)
-        {
-            await _httpClient.PostAsJsonAsync("/api/repository/author/add", author, cancellationToken);
-            count++;
-        }
-        foreach (var ebook in _stagedEbooks)
-        {
-            await _httpClient.PostAsJsonAsync("/api/repository/ebook/add", ebook, cancellationToken);
-            count++;
-        }
-        
-        _stagedAuthors.Clear();
-        _stagedEbooks.Clear();
-
-        await _httpClient.PostAsync("/api/repository/save", null, cancellationToken);
-        return count;
-    }
-}

src/NexusReader.Web.Client/Services/WasmEmbeddingGenerator.cs

@@ -1,33 +0,0 @@
-using System.Net.Http.Json;
-using Microsoft.Extensions.AI;
-
-namespace NexusReader.Web.Client.Services;
-
-public class WasmEmbeddingGenerator : IEmbeddingGenerator<string, Embedding<float>>
-{
-    private readonly HttpClient _httpClient;
-
-    public WasmEmbeddingGenerator(HttpClient httpClient)
-    {
-        _httpClient = httpClient;
-    }
-
-    public void Dispose() { }
-
-    public async Task<GeneratedEmbeddings<Embedding<float>>> GenerateAsync(
-        IEnumerable<string> values, 
-        EmbeddingGenerationOptions? options = null, 
-        CancellationToken cancellationToken = default)
-    {
-        var response = await _httpClient.PostAsJsonAsync("/api/ai/embeddings", new { values, options }, cancellationToken);
-        response.EnsureSuccessStatusCode();
-        var result = await response.Content.ReadFromJsonAsync<GeneratedEmbeddings<Embedding<float>>>(cancellationToken: cancellationToken);
-        return result ?? new GeneratedEmbeddings<Embedding<float>>();
-    }
-
-    public object? GetService(Type serviceType, object? serviceKey = null)
-    {
-        if (serviceType == typeof(IEmbeddingGenerator<string, Embedding<float>>)) return this;
-        return null;
-    }
-}

src/NexusReader.Web.Client/Services/WasmSyncBroadcaster.cs

@@ -1,44 +0,0 @@
-using System.Net.Http.Json;
-using NexusReader.Application.Abstractions.Messaging;
-
-namespace NexusReader.Web.Client.Services;
-
-public class WasmSyncBroadcaster : ISyncBroadcaster
-{
-    private readonly HttpClient _httpClient;
-
-    public WasmSyncBroadcaster(HttpClient httpClient)
-    {
-        _httpClient = httpClient;
-    }
-
-    public async Task BroadcastProgressAsync(
-        string userId,
-        string pageId,
-        DateTime timestamp,
-        string? excludedConnectionId,
-        CancellationToken cancellationToken = default)
-    {
-        await _httpClient.PostAsJsonAsync("/api/broadcaster/progress", new
-        {
-            userId,
-            pageId,
-            timestamp,
-            excludedConnectionId
-        }, cancellationToken);
-    }
-
-    public async Task BroadcastIngestionProgressAsync(
-        string userId,
-        string message,
-        double progress,
-        CancellationToken cancellationToken = default)
-    {
-        await _httpClient.PostAsJsonAsync("/api/broadcaster/ingestion-progress", new
-        {
-            userId,
-            message,
-            progress
-        }, cancellationToken);
-    }
-}

src/NexusReader.Web/Program.cs

@@ -253,13 +253,6 @@ app.MapGet("/api/epub/{ebookId:guid}/{index:int}", async (Guid ebookId, int inde
     return Results.BadRequest(errorMsg);
 }).RequireAuthorization();
 
-// Proxy API for AI services (Embeddings)
-app.MapPost("/api/ai/embeddings", async (EmbeddingsRequest request, IEmbeddingGenerator<string, Embedding<float>> generator) =>
-{
-    var result = await generator.GenerateAsync(request.Values, request.Options);
-    return Results.Ok(result);
-}).RequireAuthorization();
-
 var knowledgeApi = app.MapGroup("/api/knowledge").RequireAuthorization("HasAvailableTokens");
 
 knowledgeApi.MapPost("/", async (KnowledgeRequest request, ClaimsPrincipal user, IKnowledgeService knowledgeService) =>
@@ -303,63 +296,6 @@ knowledgeApi.MapDelete("/", async (IKnowledgeService knowledgeService) =>
     return Results.BadRequest(errorMsg);
 });
 
-// Proxy API for WASM Repository calls
-var repoApi = app.MapGroup("/api/repository").RequireAuthorization();
-
-repoApi.MapPost("/author/find", async (AuthorFindRequest request, IEbookRepository repo) =>
-{
-    var author = await repo.FindAuthorByNameAsync(request.Name);
-    return author != null ? Results.Ok(author) : Results.NotFound();
-});
-
-repoApi.MapPost("/author/add", (Author author, IEbookRepository repo) =>
-{
-    repo.AddAuthor(author);
-    return Results.Ok();
-});
-
-repoApi.MapPost("/ebook/add", (Ebook ebook, IEbookRepository repo) =>
-{
-    repo.AddEbook(ebook);
-    return Results.Ok();
-});
-
-repoApi.MapPost("/save", async (IEbookRepository repo) =>
-{
-    await repo.SaveChangesAsync();
-    return Results.Ok();
-});
-
-// Proxy API for WASM Broadcaster calls
-var broadcasterApi = app.MapGroup("/api/broadcaster").RequireAuthorization();
-
-broadcasterApi.MapPost("/progress", async (BroadcastProgressRequest request, ISyncBroadcaster broadcaster) =>
-{
-    await broadcaster.BroadcastProgressAsync(request.UserId, request.PageId, request.Timestamp, request.ExcludedConnectionId);
-    return Results.Ok();
-});
-
-broadcasterApi.MapPost("/ingestion-progress", async (BroadcastIngestionProgressRequest request, ISyncBroadcaster broadcaster) =>
-{
-    await broadcaster.BroadcastIngestionProgressAsync(request.UserId, request.Message, request.Progress);
-    return Results.Ok();
-});
-
-// Proxy API for WASM Storage calls
-var storageApi = app.MapGroup("/api/storage").RequireAuthorization();
-
-storageApi.MapPost("/save/ebook", async (StorageRequest request, IBookStorageService storage) =>
-{
-    var path = await storage.SaveEbookAsync(request.Data, request.FileName);
-    return Results.Ok(new { Path = path });
-});
-
-storageApi.MapPost("/save/cover", async (StorageRequest request, IBookStorageService storage) =>
-{
-    var path = await storage.SaveCoverAsync(request.Data, request.FileName);
-    return Results.Ok(new { Path = path });
-});
-
 app.MapPost("/api/library/ingest", async ([FromBody] IngestEbookRequest request, ClaimsPrincipal user, IMediator mediator) =>
 {
     var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
@@ -585,8 +521,3 @@ app.Run();
 
 public record KnowledgeRequest(string Text);
 public record GroundednessRequest(string Answer, string Context);
-public record AuthorFindRequest(string Name);
-public record BroadcastProgressRequest(string UserId, string PageId, DateTime Timestamp, string? ExcludedConnectionId);
-public record BroadcastIngestionProgressRequest(string UserId, string Message, double Progress);
-public record StorageRequest(byte[] Data, string FileName);
-public record EmbeddingsRequest(IEnumerable<string> Values, EmbeddingGenerationOptions? Options);