diff --git a/backend/src/Host/Program.cs b/backend/src/Host/Program.cs
index e835ddc..b6dc5ca 100644
--- a/backend/src/Host/Program.cs
+++ b/backend/src/Host/Program.cs
@@ -1,16 +1,30 @@
 using Knot.Modules.Messaging;
 using Knot.Shared.Infrastructure;
 using Knot.Modules.Auth;
+using Knot.Modules.Auth.Presentation.Endpoints;
 using Knot.Modules.Profiles;
+using Knot.Modules.Profiles.Presentation.Endpoints;
 using Knot.Modules.Settings;
+using Knot.Modules.Settings.Presentation.Endpoints;
 using Knot.Modules.Admin;
 using Knot.Modules.Conversations;
 using Knot.Modules.Conversations.Infrastructure.SignalR;
+using Knot.Modules.Conversations.Presentation.Endpoints;
 using Knot.Modules.Auth.Infrastructure.Persistence;
 using Knot.Modules.Conversations.Infrastructure.Persistence;
 using Knot.Modules.Storage;
 using Knot.Modules.Stories;
+using Knot.Modules.Stories.Presentation.Endpoints;
 using Knot.Modules.Klipy;
+using Knot.Modules.Federation;
+using Knot.Modules.WebRtc;
+using Knot.Modules.WebRtc.Presentation.Endpoints;
+using Knot.Modules.TelegramImport;
+using Knot.Modules.TelegramImport.Presentation.Endpoints;
+using Knot.Modules.Relations;
+using Knot.Modules.Relations.Presentation.Endpoints;
+using Host.Endpoints;
+using Knot.Host.Presentation.Endpoints;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.IdentityModel.Tokens;
diff --git a/backend/src/Modules/Auth/Application/Users/GetMe/GetMe.cs b/backend/src/Modules/Auth/Application/Users/GetMe/GetMe.cs
index 5a11565..b817485 100644
--- a/backend/src/Modules/Auth/Application/Users/GetMe/GetMe.cs
+++ b/backend/src/Modules/Auth/Application/Users/GetMe/GetMe.cs
@@ -1,6 +1,6 @@
-using Knot.Shared.Kernel;
-using Knot.Contracts.Auth.Domain;
 using Knot.Contracts.Auth.Application.Auth.DTOs;
+using Knot.Contracts.Auth.Application.Auth.DTOs;
+using Knot.Shared.Kernel;
 
 namespace Knot.Modules.Auth.Application.Users.GetMe;
 
diff --git a/backend/src/Modules/Auth/Application/Users/Login/LoginUserCommandHandler.cs b/backend/src/Modules/Auth/Application/Users/Login/LoginUserCommandHandler.cs
index a4bf5d8..fdf0bbb 100644
--- a/backend/src/Modules/Auth/Application/Users/Login/LoginUserCommandHandler.cs
+++ b/backend/src/Modules/Auth/Application/Users/Login/LoginUserCommandHandler.cs
@@ -1,7 +1,6 @@
 using BCrypt.Net;
 using Knot.Contracts.Auth.Application.Abstractions;
 using Knot.Contracts.Auth.Application.Auth.DTOs;
-using Knot.Contracts.Auth.Domain;
 using Knot.Shared.Kernel;
 
 namespace Knot.Modules.Auth.Application.Users.Login;
diff --git a/backend/src/Modules/Auth/Application/Users/Register/RegisterUserCommandHandler.cs b/backend/src/Modules/Auth/Application/Users/Register/RegisterUserCommandHandler.cs
index 710d599..e170a09 100644
--- a/backend/src/Modules/Auth/Application/Users/Register/RegisterUserCommandHandler.cs
+++ b/backend/src/Modules/Auth/Application/Users/Register/RegisterUserCommandHandler.cs
@@ -1,16 +1,16 @@
-using Knot.Contracts.Auth.Domain;
+using BCrypt.Net;
+using BCrypt.Net;
 using Knot.Contracts.Auth.Application.Abstractions;
 using Knot.Contracts.Auth.Application.Auth.DTOs;
-using Knot.Modules.Auth.Domain;
-using Knot.Shared.Kernel;
 using Knot.Contracts.Settings.Application.Abstractions;
 using Knot.Contracts.Settings.Application.DTOs;
-using BCrypt.Net;
+using Knot.Modules.Auth.Domain;
+using Knot.Shared.Kernel;
 
 namespace Knot.Modules.Auth.Application.Users.Register;
 
 /// <summary>
-/// ������� ��� ����������� ������ ������������.
+/// ������� ��� ����������� ������ ������������.
 /// </summary>
 public sealed record RegisterUserCommand(
     string Username,
@@ -20,7 +20,7 @@ public sealed record RegisterUserCommand(
     string? Bio) : ICommand<AuthResponseDto>;
 
 /// <summary>
-/// ���������� ������� �����������.
+/// ���������� ������� �����������.
 /// </summary>
 internal sealed class RegisterUserCommandHandler : ICommandHandler<RegisterUserCommand, AuthResponseDto>
 {
@@ -48,16 +48,16 @@ internal sealed class RegisterUserCommandHandler : ICommandHandler<RegisterUserC
             return Result.Failure<AuthResponseDto>(AuthErrors.IdentityRegistrationDisabled);
         }
 
-        // 1. �������� ������������ username
+        // 1. �������� ������������ username
         if (!await _userRepository.IsUsernameUniqueAsync(request.Username, cancellationToken))
         {
             return Result.Failure<AuthResponseDto>(AuthErrors.IdentityUsernameNotUnique);
         }
 
-        // 2. ����������� ������
+        // 2. ����������� ������
         string passwordHash = BCrypt.Net.BCrypt.HashPassword(request.Password);
 
-        // 3. �������� ��������
+        // 3. �������� ��������
         var user = User.Create(
             request.Username,
             passwordHash,
@@ -65,10 +65,10 @@ internal sealed class RegisterUserCommandHandler : ICommandHandler<RegisterUserC
             request.Email,
             request.Bio);
 
-        // 4. ���������� - ���������� ����� � Domain User
+        // 4. ���������� - ���������� ����� � Domain User
         var repoWithDomainUserAdd = _userRepository as Infrastructure.Persistence.UserRepository;
         repoWithDomainUserAdd?.Add(user);
-        
+
         await _unitOfWork.SaveChangesAsync(cancellationToken);
 
         string token = _tokenProvider.Generate(user.Id, user.Username, user.DisplayName, user.Avatar);
diff --git a/backend/src/Modules/Auth/DependencyInjection.cs b/backend/src/Modules/Auth/DependencyInjection.cs
index b4ecbeb..0af314a 100644
--- a/backend/src/Modules/Auth/DependencyInjection.cs
+++ b/backend/src/Modules/Auth/DependencyInjection.cs
@@ -24,7 +24,7 @@ public static class DependencyInjection
         services.AddScoped<IAuthUnitOfWork>(sp => sp.GetRequiredService<AuthDbContext>());
         services.AddScoped<Knot.Contracts.Auth.Application.Abstractions.IAuthDbContext>(sp => sp.GetRequiredService<AuthDbContext>());
         services.AddScoped<Knot.Contracts.Auth.Infrastructure.Persistence.IAuthDbContext>(sp => sp.GetRequiredService<AuthDbContext>());
-        services.AddScoped<IUserRepository, UserRepository>();
+        services.AddScoped<Knot.Contracts.Auth.Domain.IUserRepository, UserRepository>();
         services.AddScoped<IJwtTokenProvider, JwtTokenProvider>();
         services.AddScoped<IUserDisplayNameProvider, Knot.Modules.Auth.Infrastructure.Services.UserDisplayNameProvider>();
 
diff --git a/backend/src/Modules/Auth/Domain/IUserRepository.cs b/backend/src/Modules/Auth/Domain/IUserRepository.cs
deleted file mode 100644
index bf25a49..0000000
--- a/backend/src/Modules/Auth/Domain/IUserRepository.cs
+++ /dev/null
@@ -1,19 +0,0 @@
-using Knot.Modules.Auth.Domain;
-
-namespace Knot.Modules.Auth.Domain;
-
-/// <summary>
-/// Интерфейс репозитория для работы с пользователями.
-/// </summary>
-public interface IUserRepository
-{
-    Task<User?> GetByIdAsync(Guid id, CancellationToken cancellationToken = default);
-    Task<List<User>> GetByIdsAsync(IEnumerable<Guid> ids, CancellationToken cancellationToken = default);
-    Task<User?> GetByUsernameAsync(string username, CancellationToken cancellationToken = default);
-    Task<bool> IsUsernameUniqueAsync(string username, CancellationToken cancellationToken = default);
-    Task<List<User>> SearchUsersAsync(string query, CancellationToken cancellationToken = default);
-    void Add(User user);
-    void Update(User user);
-    void Remove(User user);
-}
-
diff --git a/backend/src/Modules/Auth/GlobalUsings.cs b/backend/src/Modules/Auth/GlobalUsings.cs
new file mode 100644
index 0000000..832e4f0
--- /dev/null
+++ b/backend/src/Modules/Auth/GlobalUsings.cs
@@ -0,0 +1,4 @@
+// Глобальные алиасы для модуля Auth
+// Используем контракты вместо дублирующихся интерфейсов из модуля
+global using AuthErrors = Knot.Contracts.Auth.Application.Auth.DTOs.AuthErrors;
+global using IUserRepository = Knot.Contracts.Auth.Domain.IUserRepository;
diff --git a/backend/src/Modules/Auth/Infrastructure/Services/UserDisplayNameProvider.cs b/backend/src/Modules/Auth/Infrastructure/Services/UserDisplayNameProvider.cs
index 6af93cc..6208c61 100644
--- a/backend/src/Modules/Auth/Infrastructure/Services/UserDisplayNameProvider.cs
+++ b/backend/src/Modules/Auth/Infrastructure/Services/UserDisplayNameProvider.cs
@@ -1,4 +1,3 @@
-using Knot.Contracts.Auth.Domain;
 using Knot.Shared.Kernel;
 
 namespace Knot.Modules.Auth.Infrastructure.Services;
diff --git a/backend/src/Modules/Profiles/DependencyInjection.cs b/backend/src/Modules/Profiles/DependencyInjection.cs
index 10164b3..e6241ea 100644
--- a/backend/src/Modules/Profiles/DependencyInjection.cs
+++ b/backend/src/Modules/Profiles/DependencyInjection.cs
@@ -10,15 +10,15 @@ public static class DependencyInjection
 {
     public static IServiceCollection AddProfilesModule(this IServiceCollection services, IConfiguration configuration)
     {
-        services.AddScoped<IProfileRepository, ProfileRepository>();
-        services.AddScoped<IProfilesUnitOfWork, ProfilesUnitOfWork>();
-        services.AddScoped<IAvatarStorageService, AvatarStorageService>();
+        services.AddScoped<Knot.Contracts.Profiles.Domain.IProfileRepository, ProfileRepository>();
+        services.AddScoped<Knot.Contracts.Profiles.Domain.IProfilesUnitOfWork, ProfilesUnitOfWork>();
+        services.AddScoped<Knot.Contracts.Profiles.Domain.IAvatarStorageService, AvatarStorageService>();
 
         // MongoDB Registration
-        var mongoConnection = configuration.GetConnectionString("MongoConnection") 
-                             ?? configuration["MONGO_URL"] 
+        var mongoConnection = configuration.GetConnectionString("MongoConnection")
+                             ?? configuration["MONGO_URL"]
                              ?? "mongodb://mongo:27017";
-        
+
         var mongoClient = new MongoClient(mongoConnection);
         var databaseName = new MongoUrl(mongoConnection).DatabaseName ?? "knot_messager";
         var database = mongoClient.GetDatabase(databaseName);
diff --git a/backend/src/Modules/Profiles/Domain/IAvatarStorageService.cs b/backend/src/Modules/Profiles/Domain/IAvatarStorageService.cs
deleted file mode 100644
index 96f5192..0000000
--- a/backend/src/Modules/Profiles/Domain/IAvatarStorageService.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using System.IO;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace Knot.Modules.Profiles.Domain;
-
-public interface IAvatarStorageService
-{
-    Task<string> UploadAsync(Stream content, string fileName, string contentType, CancellationToken ct = default);
-    Task DeleteAsync(string fileId, CancellationToken ct = default);
-}
diff --git a/backend/src/Modules/Profiles/Domain/IProfileRepository.cs b/backend/src/Modules/Profiles/Domain/IProfileRepository.cs
deleted file mode 100644
index 74f365a..0000000
--- a/backend/src/Modules/Profiles/Domain/IProfileRepository.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace Knot.Modules.Profiles.Domain;
-
-public interface IProfileRepository
-{
-    Task<ProfileDocument?> GetByIdAsync(Guid id, CancellationToken ct = default);
-    Task<ProfileDocument?> GetByUsernameAsync(string username, CancellationToken ct = default);
-    Task AddAsync(ProfileDocument profile, CancellationToken ct = default);
-    Task UpdateAsync(ProfileDocument profile, CancellationToken ct = default);
-    Task<List<ProfileDocument>> SearchAsync(string query, CancellationToken ct = default);
-}
diff --git a/backend/src/Modules/Profiles/Domain/IProfilesUnitOfWork.cs b/backend/src/Modules/Profiles/Domain/IProfilesUnitOfWork.cs
deleted file mode 100644
index b18ed41..0000000
--- a/backend/src/Modules/Profiles/Domain/IProfilesUnitOfWork.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace Knot.Modules.Profiles.Domain;
-
-public interface IProfilesUnitOfWork
-{
-    Task SaveChangesAsync(CancellationToken ct = default);
-}
diff --git a/backend/src/Modules/Profiles/Domain/ProfilesErrors.cs b/backend/src/Modules/Profiles/Domain/ProfilesErrors.cs
deleted file mode 100644
index 23bc1be..0000000
--- a/backend/src/Modules/Profiles/Domain/ProfilesErrors.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-namespace Knot.Modules.Profiles.Domain;
-using Knot.Shared.Kernel;
-public static class ProfilesErrors
-{
-    public static readonly Error ProfileNotFound = new("Profile.NotFound", "Profile not found");
-}
-public static class IdentityErrors
-{
-    public static readonly Error UserNotFound = new("Profile.NotFound", "Profile not found");
-}
diff --git a/backend/src/Modules/Profiles/GlobalUsings.cs b/backend/src/Modules/Profiles/GlobalUsings.cs
index ff58cfb..1ac4666 100644
--- a/backend/src/Modules/Profiles/GlobalUsings.cs
+++ b/backend/src/Modules/Profiles/GlobalUsings.cs
@@ -1,18 +1,32 @@
+global using System;
+global using System;
+global using System.Collections.Generic;
+global using System.Collections.Generic;
+global using System.IO;
+global using System.IO;
+global using System.Linq;
+global using System.Linq;
+global using System.Threading;
+global using System.Threading;
+global using System.Threading.Tasks;
+global using System.Threading.Tasks;
+global using Knot.Modules.Profiles.Domain;
+global using Knot.Modules.Profiles.Domain;
+global using Knot.Modules.Profiles.Domain.Events;
+global using Knot.Modules.Profiles.Domain.Events;
+global using Knot.Modules.Profiles.Infrastructure.Database;
+global using Knot.Modules.Profiles.Infrastructure.Database;
 global using Knot.Shared.Kernel;
 global using Knot.Shared.Kernel.Events;
 global using Knot.Shared.Kernel.Storage;
-global using Knot.Modules.Profiles.Domain;
-global using Knot.Modules.Profiles.Domain.Events;
-global using Knot.Modules.Profiles.Infrastructure.Database;
+global using MediatR;
+global using Microsoft.Extensions.Configuration;
+global using Microsoft.Extensions.DependencyInjection;
 global using MongoDB.Bson;
 global using MongoDB.Bson.Serialization.Attributes;
 global using MongoDB.Driver;
-global using MediatR;
-global using Microsoft.Extensions.DependencyInjection;
-global using Microsoft.Extensions.Configuration;
-global using System;
-global using System.Collections.Generic;
-global using System.Threading;
-global using System.Threading.Tasks;
-global using System.IO;
-global using System.Linq;
+global using IAvatarStorageService = Knot.Contracts.Profiles.Domain.IAvatarStorageService;
+// Алиасы для использования контрактов вместо дублирующихся интерфейсов модуля
+global using IProfileRepository = Knot.Contracts.Profiles.Domain.IProfileRepository;
+global using IProfilesUnitOfWork = Knot.Contracts.Profiles.Domain.IProfilesUnitOfWork;
+global using ProfilesErrors = Knot.Contracts.Profiles.Application.DTOs.ProfilesErrors;
diff --git a/backend/src/Modules/Profiles/Infrastructure/Database/ProfileRepository.cs b/backend/src/Modules/Profiles/Infrastructure/Database/ProfileRepository.cs
index 2789a00..f9e90eb 100644
--- a/backend/src/Modules/Profiles/Infrastructure/Database/ProfileRepository.cs
+++ b/backend/src/Modules/Profiles/Infrastructure/Database/ProfileRepository.cs
@@ -3,12 +3,11 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-using Knot.Contracts.Profiles.Domain;
 using Knot.Contracts.Profiles.Application.DTOs;
+using Knot.Contracts.Profiles.Domain;
 using Knot.Modules.Profiles.Domain;
 using Knot.Modules.Profiles.Infrastructure.Mappings;
 using Knot.Shared.Kernel;
-using ProfilesErrors = Knot.Contracts.Profiles.Application.DTOs.ProfilesErrors;
 using MongoDB.Bson;
 using MongoDB.Driver;
 
diff --git a/backend/src/Modules/Stories/Application/Abstractions/IStoriesDbContext.cs b/backend/src/Modules/Stories/Application/Abstractions/IStoriesDbContext.cs
index 777b5f5..3656cf1 100644
--- a/backend/src/Modules/Stories/Application/Abstractions/IStoriesDbContext.cs
+++ b/backend/src/Modules/Stories/Application/Abstractions/IStoriesDbContext.cs
@@ -1,8 +1,9 @@
+using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Microsoft.EntityFrameworkCore;
+using Knot.Contracts.Relations.Domain;
 using Knot.Modules.Stories.Domain;
-using Knot.Modules.Relations.Domain;
+using Microsoft.EntityFrameworkCore;
 
 namespace Knot.Modules.Stories.Application.Abstractions;