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.gitignore

@@ -87,3 +87,13 @@ postgres_data/
 tmp/
 
 *.txt
+
+# Android / Kotlin Mobile
+client-mobile/.gradle/
+client-mobile/.idea/
+client-mobile/.run/
+client-mobile/build/
+client-mobile/.cxx/
+client-mobile/local.properties
+client-mobile/*.iml
+client-mobile/.kotlin/

backend/Tests/Admin/IntegrationTests/Knot.Modules.Admin.IntegrationTests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\IntegrationTests.Shared\Knot.IntegrationTests.Shared.csproj" />
+    <ProjectReference Include="..\..\..\src\Modules\Admin\Knot.Modules.Admin.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Admin/UnitTests/Knot.Modules.Admin.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Admin\Knot.Modules.Admin.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Admin/UnitTests/Knot.Modules.Settings.UnitTests.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+</Project>

backend/Tests/Admin/UnitTests/ResetUserPasswordCommandHandlerTests.cs

@@ -0,0 +1,58 @@
+using FluentAssertions;
+using Knot.Modules.Admin.Application.Admin.Commands;
+using Knot.Modules.Auth.Application.Abstractions;
+using Knot.Modules.Auth.Domain;
+using Knot.Shared.Kernel;
+using NSubstitute;
+using Xunit;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Knot.Modules.Admin.UnitTests;
+
+public class ResetUserPasswordCommandHandlerTests
+{
+    private readonly IAuthUnitOfWork _authUnitOfWork;
+    private readonly IUserRepository _userRepository;
+    private readonly ResetUserPasswordCommandHandler _handler;
+
+    public ResetUserPasswordCommandHandlerTests()
+    {
+        _authUnitOfWork = Substitute.For<IAuthUnitOfWork>();
+        _userRepository = Substitute.For<IUserRepository>();
+        _handler = new ResetUserPasswordCommandHandler(_userRepository, _authUnitOfWork);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnError_WhenUserNotFound()
+    {
+        // Arrange
+        var command = new ResetUserPasswordCommand(Guid.NewGuid(), "NewP@ssw0rd");
+        _userRepository.GetByIdAsync(command.UserId, Arg.Any<CancellationToken>()).Returns((User?)null);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Should().Be(AuthErrors.UserNotFound);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldSucceed_WhenUserFound()
+    {
+        // Arrange
+        var user = User.Create("User", "pass", "salt", "admin");
+        var command = new ResetUserPasswordCommand(user.Id, "NewP@ssw0rd");
+        
+        _userRepository.GetByIdAsync(command.UserId, Arg.Any<CancellationToken>()).Returns(user);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        await _authUnitOfWork.Received(1).SaveChangesAsync(Arg.Any<CancellationToken>());
+    }
+}

backend/Tests/Auth/IntegrationTests/Knot.Modules.Auth.IntegrationTests.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Auth/UnitTests/Knot.Modules.Auth.UnitTests.csproj

@@ -0,0 +1,32 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.2">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="6.0.4">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Auth\Knot.Modules.Auth.csproj" />
+    <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+
+

backend/Tests/Auth/UnitTests/LoginUserCommandHandlerTests.cs

@@ -0,0 +1,88 @@
+using FluentAssertions;
+using NSubstitute;
+using Knot.Modules.Auth.Application.Abstractions;
+using Knot.Modules.Auth.Application.Users.Login;
+using Knot.Modules.Auth.Domain;
+using Knot.Shared.Kernel;
+using Knot.Modules.Auth.Application.Users.Auth;
+using Xunit;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Knot.Modules.Auth.UnitTests;
+
+public class LoginUserCommandHandlerTests
+{
+    private readonly IUserRepository _userRepository;
+    private readonly IJwtTokenProvider _tokenProvider;
+    private readonly LoginUserCommandHandler _handler;
+
+    public LoginUserCommandHandlerTests()
+    {
+        _userRepository = Substitute.For<IUserRepository>();
+        _tokenProvider = Substitute.For<IJwtTokenProvider>();
+        _handler = new LoginUserCommandHandler(_userRepository, _tokenProvider);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnToken_WhenCredentialsAreValid()
+    {
+        // Arrange
+        var password = "password123";
+        var passwordHash = BCrypt.Net.BCrypt.HashPassword(password);
+        var user = User.Create("testuser", passwordHash, "Test User", null, null);
+
+        var command = new LoginUserCommand("testuser", password);
+
+        _userRepository.GetByUsernameAsync(command.Username, Arg.Any<CancellationToken>())
+            .Returns(user);
+
+        _tokenProvider.Generate(user).Returns("valid-jwt-token");
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        result.Value.Token.Should().Be("valid-jwt-token");
+        result.Value.User.Username.Should().Be("testuser");
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnFailure_WhenUserDoesNotExist()
+    {
+        // Arrange
+        var command = new LoginUserCommand("nonexistent", "password123");
+        _userRepository.GetByUsernameAsync(command.Username, Arg.Any<CancellationToken>())
+            .Returns((User)null!);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Code.Should().Be(AuthErrors.IdentityInvalidCredentials.Code);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnFailure_WhenPasswordIsInvalid()
+    {
+        // Arrange
+        var correctPassword = "correctPassword";
+        var passwordHash = BCrypt.Net.BCrypt.HashPassword(correctPassword);
+        var user = User.Create("testuser", passwordHash, "Test User", null, null);
+
+        var command = new LoginUserCommand("testuser", "wrongPassword");
+
+        _userRepository.GetByUsernameAsync(command.Username, Arg.Any<CancellationToken>())
+            .Returns(user);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Code.Should().Be(AuthErrors.IdentityInvalidCredentials.Code);
+    }
+}
+

backend/Tests/Conversations/UnitTests/Chats/CreateChatCommandHandlerTests.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using FluentAssertions;
+using NSubstitute;
+using Xunit;
+using Knot.Shared.Kernel;
+using Knot.Contracts.Conversations.Domain;
+using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Modules.Conversations.Application.Chats.Create;
+
+namespace Knot.Modules.Conversations.UnitTests.Chats;
+
+public class CreateChatCommandHandlerTests
+{
+    private readonly IChatRepository _chatRepository;
+    private readonly IChatsUnitOfWork _unitOfWork;
+    private readonly CreateChatCommandHandler _handler;
+
+    public CreateChatCommandHandlerTests()
+    {
+        _chatRepository = Substitute.For<IChatRepository>();
+        _unitOfWork = Substitute.For<IChatsUnitOfWork>();
+        _handler = new CreateChatCommandHandler(_chatRepository, _unitOfWork);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldCreateChatAndAddMembers()
+    {
+        // Arrange
+        var request = new CreateChatCommand("Test Group", ChatType.Group, new List<Guid> { Guid.NewGuid(), Guid.NewGuid() });
+
+        // Act
+        var result = await _handler.Handle(request, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        result.Value.Should().NotBeEmpty();
+
+        _chatRepository.Received(1).Add(Arg.Is<Chat>(c =>
+            c.Name == "Test Group" &&
+            c.Type == ChatType.Group &&
+            c.Members.Count == 2 &&
+            c.Members.First().Role == ChatRole.Owner &&
+            c.Members.Last().Role == ChatRole.Member));
+
+        await _unitOfWork.Received(1).SaveChangesAsync(Arg.Any<CancellationToken>());
+    }
+}
+
+

backend/Tests/Conversations/UnitTests/Chats/GetChatsQueryHandlerTests.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using FluentAssertions;
+using NSubstitute;
+using Xunit;
+using Knot.Shared.Kernel;
+using Knot.Contracts.Conversations.Domain;
+using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Contracts.Messaging.Application.Abstractions;
+using Knot.Contracts.Messaging.Domain;
+using Knot.Modules.Conversations.Application.Chats.GetChats;
+using Knot.Modules.Conversations.Application.DTOs;
+
+namespace Knot.Modules.Conversations.UnitTests.Chats;
+
+public class GetChatsQueryHandlerTests
+{
+    private readonly IChatRepository _chatRepository;
+    private readonly IUserDisplayNameProvider _userProvider;
+    private readonly IMessageRepository _messageRepository;
+    private readonly IMessageReactionRepository _reactionRepository;
+    private readonly GetChatsQueryHandler _handler;
+
+    public GetChatsQueryHandlerTests()
+    {
+        _chatRepository = Substitute.For<IChatRepository>();
+        _userProvider = Substitute.For<IUserDisplayNameProvider>();
+        _messageRepository = Substitute.For<IMessageRepository>();
+        _reactionRepository = Substitute.For<IMessageReactionRepository>();
+
+        _handler = new GetChatsQueryHandler(_chatRepository, _userProvider, _messageRepository, _reactionRepository);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnUserChats_WhenTheyExist()
+    {
+        // Arrange
+        var userId = Guid.NewGuid();
+        var request = new GetChatsQuery(userId);
+
+        var chat1 = Chat.Create("Test Chat", ChatType.Group);
+        chat1.GetType().GetProperty("Id")?.SetValue(chat1, Guid.NewGuid());
+        chat1.AddMember(userId, ChatRole.Owner);
+
+        var chat2 = Chat.Create("Personal", ChatType.Personal);
+        chat2.GetType().GetProperty("Id")?.SetValue(chat2, Guid.NewGuid());
+        chat2.AddMember(userId, ChatRole.Member);
+
+        _chatRepository.GetUserChatsAsync(userId, Arg.Any<CancellationToken>())
+            .Returns(new List<Chat> { chat1, chat2 });
+
+        _messageRepository.GetChatMessagesAsync(Arg.Any<Guid>(), 1, 0, Arg.Any<CancellationToken>())
+            .Returns(new List<Message>());
+
+        _userProvider.GetUsersInfoAsync(Arg.Any<IEnumerable<Guid>>(), Arg.Any<CancellationToken>())
+            .Returns(new Dictionary<Guid, UserInfo>());
+
+        // Act
+        var result = await _handler.Handle(request, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        result.Value.Should().NotBeNull();
+        
+        // It always appends synthetic "favorites" chat at the end if not found
+        result.Value.Count.Should().Be(2); 
+        result.Value.Any(c => c.Name == "Test Chat").Should().BeTrue();
+        result.Value.Any(c => c.Type == "favorites").Should().BeTrue();
+    }
+}
+
+

backend/Tests/Conversations/UnitTests/GetOrCreateFavoritesCommandHandlerTests.cs

@@ -0,0 +1,73 @@
+using FluentAssertions;
+using NSubstitute;
+using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Modules.Conversations.Application.Chats.GetOrCreateFavorites;
+using Knot.Contracts.Conversations.Domain;
+using Knot.Shared.Kernel;
+using Xunit;
+
+namespace Knot.Modules.Conversations.UnitTests;
+
+public class GetOrCreateFavoritesCommandHandlerTests
+{
+    private readonly IChatRepository _chatRepository;
+    private readonly IChatsUnitOfWork _unitOfWork;
+    private readonly GetOrCreateFavoritesCommandHandler _handler;
+
+    public GetOrCreateFavoritesCommandHandlerTests()
+    {
+        _chatRepository = Substitute.For<IChatRepository>();
+        _unitOfWork = Substitute.For<IChatsUnitOfWork>();
+        _handler = new GetOrCreateFavoritesCommandHandler(_chatRepository, _unitOfWork);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnExistingChat_WhenFavoritesAlreadyExists()
+    {
+        // Arrange
+        var userId = Guid.NewGuid();
+        var existingChat = Chat.Create("Избранное", ChatType.Favorites);
+
+        _chatRepository.GetFavoritesAsync(userId, Arg.Any<CancellationToken>())
+            .Returns(existingChat);
+
+        var command = new GetOrCreateFavoritesCommand(userId);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        result.Value.Should().Be(existingChat.Id);
+
+        _chatRepository.DidNotReceive().Add(Arg.Any<Chat>());
+        await _unitOfWork.DidNotReceive().SaveChangesAsync(Arg.Any<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task Handle_ShouldCreateNewChat_WhenFavoritesDoesNotExist()
+    {
+        // Arrange
+        var userId = Guid.NewGuid();
+        _chatRepository.GetFavoritesAsync(userId, Arg.Any<CancellationToken>())
+            .Returns((Chat)null!);
+
+        var command = new GetOrCreateFavoritesCommand(userId);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        result.Value.Should().NotBeEmpty();
+
+        _chatRepository.Received(1).Add(Arg.Is<Chat>(c =>
+            c.Type == ChatType.Favorites &&
+            c.Name == "Избранное" &&
+            c.Members.Any(m => m.UserId == userId)));
+
+        await _unitOfWork.Received(1).SaveChangesAsync(Arg.Any<CancellationToken>());
+    }
+}
+
+

backend/Tests/Conversations/UnitTests/Knot.Modules.Conversations.UnitTests.csproj

@@ -0,0 +1,33 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.2">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="6.0.4">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Contracts\Conversations\Knot.Contracts.Conversations.csproj" />
+    <ProjectReference Include="..\..\..\src\Modules\Messaging\Knot.Modules.Messaging.csproj" />
+    <ProjectReference Include="..\..\..\src\Modules\Conversations\Knot.Modules.Conversations.csproj" />
+    <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Conversations/UnitTests/Messages/SendMessageCommandHandlerTests.cs

@@ -0,0 +1,113 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using FluentAssertions;
+using MediatR;
+using Microsoft.Extensions.Logging;
+using NSubstitute;
+using Xunit;
+using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Contracts.Conversations.Domain;
+using Knot.Contracts.Messaging.Application.Abstractions;
+using Knot.Contracts.Messaging.Domain;
+using Knot.Shared.Kernel;
+using Knot.Modules.Conversations.Application.Messages.Send;
+using Knot.Contracts.Settings.Application.Abstractions;
+using Knot.Contracts.Settings.Application.DTOs;
+
+namespace Knot.Modules.Conversations.UnitTests.Messages;
+
+public class SendMessageCommandHandlerTests
+{
+    private readonly IChatRepository _chatRepository;
+    private readonly IMessageRepository _messageRepository;
+    private readonly IChatsUnitOfWork _unitOfWork;
+    private readonly IMediator _mediator;
+    private readonly IMessagesSettings _messagesSettings;
+    private readonly IIdempotencyStore _idempotencyStore;
+    private readonly ILogger<SendMessageCommandHandler> _logger;
+    private readonly SendMessageCommandHandler _handler;
+
+    public SendMessageCommandHandlerTests()
+    {
+        _chatRepository = Substitute.For<IChatRepository>();
+        _messageRepository = Substitute.For<IMessageRepository>();
+        _unitOfWork = Substitute.For<IChatsUnitOfWork>();
+        _mediator = Substitute.For<IMediator>();
+        _messagesSettings = Substitute.For<IMessagesSettings>();
+        _idempotencyStore = Substitute.For<IIdempotencyStore>();
+        _logger = Substitute.For<ILogger<SendMessageCommandHandler>>();
+        
+        var config = new MessagesConfig();
+        _messagesSettings.Current.Returns(config);
+
+        _handler = new SendMessageCommandHandler(_chatRepository, _messageRepository, _unitOfWork, _mediator, _messagesSettings, _idempotencyStore, _logger);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnFailure_WhenChatNotFound()
+    {
+        // Arrange
+        var command = new SendMessageCommand(Guid.NewGuid(), Guid.NewGuid(), "Hello", "text");
+        _chatRepository.GetByIdAsync(command.ChatId, Arg.Any<CancellationToken>())
+            .Returns((Chat)null!);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Code.Should().Be(ChatErrors.ChatsNotFound.Code);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnFailure_WhenSenderIsNotMember()
+    {
+        // Arrange
+        var chat = Chat.Create("Test", ChatType.Group);
+        var command = new SendMessageCommand(chat.Id, Guid.NewGuid(), "Hello", "text");
+        
+        _chatRepository.GetByIdAsync(command.ChatId, Arg.Any<CancellationToken>())
+            .Returns(chat);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Code.Should().Be(ChatErrors.ChatsForbidden.Code);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldCreateMessage_WhenAuthorized()
+    {
+        // Arrange
+        var senderId = Guid.NewGuid();
+        var chat = Chat.Create("Test", ChatType.Group);
+        chat.AddMember(senderId, ChatRole.Member);
+
+        var command = new SendMessageCommand(chat.Id, senderId, "Hello", "text");
+        
+        _chatRepository.GetByIdAsync(command.ChatId, Arg.Any<CancellationToken>())
+            .Returns(chat);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        result.Value.Should().NotBeEmpty();
+
+        _messageRepository.Received(1).Add(Arg.Is<Message>(m => 
+            m.ChatId == chat.Id &&
+            m.SenderId == senderId &&
+            m.Content == "Hello" &&
+            m.Type == "text"));
+
+        await _unitOfWork.Received(1).SaveChangesAsync(Arg.Any<CancellationToken>());
+    }
+}
+
+

backend/Tests/Federation/IntegrationTests/Knot.Modules.Federation.IntegrationTests.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Federation/UnitTests/Knot.Modules.Federation.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Federation\Knot.Modules.Federation.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Klipy/UnitTests/Knot.Modules.Klipy.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Klipy\Knot.Modules.Klipy.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Messaging/IntegrationTests/Knot.Modules.Messaging.IntegrationTests.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Messaging/UnitTests/Knot.Modules.Messaging.UnitTests.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Relations/IntegrationTests/Knot.Modules.Relations.IntegrationTests.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Relations/UnitTests/Knot.Modules.Relations.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Relations\Knot.Modules.Relations.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Shared/IntegrationTests.Shared/BaseIntegrationTest.cs

@@ -0,0 +1,88 @@
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using System.Net.Http;
+using Testcontainers.PostgreSql;
+using Testcontainers.MongoDb;
+using Xunit;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+using Knot.Shared.Kernel;
+using NSubstitute;
+
+namespace Knot.IntegrationTests;
+
+public abstract class BaseIntegrationTest : IAsyncLifetime
+{
+    protected readonly PostgreSqlContainer _postgresContainer = new PostgreSqlBuilder()
+        .WithImage("postgres:15-alpine")
+        .Build();
+
+    protected readonly MongoDbContainer _mongoContainer = new MongoDbBuilder()
+        .WithImage("mongo:6.0")
+        .Build();
+
+    protected HttpClient _client;
+    protected WebApplicationFactory<Program> _factory;
+    protected readonly Guid _userId = Guid.NewGuid();
+    protected readonly IUserContext _userContextMock = Substitute.For<IUserContext>();
+
+    public virtual async Task InitializeAsync()
+    {
+        await _postgresContainer.StartAsync();
+        await _mongoContainer.StartAsync();
+
+        _userContextMock.UserId.Returns(_userId);
+        _userContextMock.IsAuthenticated.Returns(true);
+
+        _factory = new IntegrationTestWebApplicationFactory(
+            _postgresContainer.GetConnectionString(),
+            _mongoContainer.GetConnectionString(),
+            _userContextMock);
+
+        _client = _factory.CreateClient();
+    }
+
+    public virtual async Task DisposeAsync()
+    {
+        await _postgresContainer.StopAsync();
+        await _mongoContainer.StopAsync();
+        _factory?.Dispose();
+        _client?.Dispose();
+    }
+
+    private class IntegrationTestWebApplicationFactory : WebApplicationFactory<Program>
+    {
+        private readonly string _pgConnectionString;
+        private readonly string _mongoConnectionString;
+        private readonly IUserContext _userContext;
+
+        public IntegrationTestWebApplicationFactory(string pg, string mongo, IUserContext userContext)
+        {
+            _pgConnectionString = pg;
+            _mongoConnectionString = mongo;
+            _userContext = userContext;
+        }
+
+        protected override void ConfigureWebHost(IWebHostBuilder builder)
+        {
+            builder.ConfigureAppConfiguration((context, config) =>
+            {
+                config.AddInMemoryCollection(new Dictionary<string, string?>
+                {
+                    ["ConnectionStrings:DefaultConnection"] = _pgConnectionString,
+                    ["ConnectionStrings:MongoConnection"] = _mongoConnectionString,
+                    ["DATABASE_URL"] = _pgConnectionString,
+                    ["MONGO_CONNECTION"] = _mongoConnectionString,
+                    ["KNOT_MASTER_ENCRYPTION_KEY"] = "TestEncryptionKey_32CharactersLong!"
+                });
+            });
+
+            builder.ConfigureTestServices(services => {
+                services.AddScoped(_ => _userContext);
+            });
+        }
+    }
+}

backend/Tests/Shared/IntegrationTests.Shared/Knot.IntegrationTests.Shared.csproj

@@ -0,0 +1,38 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.9.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.5" />
+    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="10.0.5" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="Respawn" Version="7.0.0" />
+    <PackageReference Include="Testcontainers.MongoDb" Version="4.11.0" />
+    <PackageReference Include="Testcontainers.PostgreSql" Version="4.11.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Host\Host.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Infrastructure\Knot.Shared.Infrastructure.csproj" />
+  </ItemGroup>
+
+</Project>

backend/Tests/Storage/UnitTests/Knot.Modules.Storage.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Storage\Knot.Modules.Storage.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Stories/IntegrationTests/Knot.Modules.Stories.IntegrationTests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\IntegrationTests.Shared\Knot.IntegrationTests.Shared.csproj" />
+    <ProjectReference Include="..\..\..\src\Modules\Stories\Knot.Modules.Stories.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Stories/IntegrationTests/StoriesTests.cs

@@ -0,0 +1,34 @@
+using Knot.IntegrationTests;
+using FluentAssertions;
+using Knot.Modules.Stories.Application.Stories.Commands.CreateStory;
+using Knot.Shared.Kernel;
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.DependencyInjection;
+using NSubstitute;
+using System.Net;
+using System.Net.Http.Json;
+using Xunit;
+using System;
+using System.Threading.Tasks;
+
+namespace Knot.IntegrationTests.Stories;
+
+public class StoriesTests : BaseIntegrationTest
+{
+    [Fact]
+    public async Task CreateStory_ShouldReturnOk_WhenValidRequest()
+    {
+        // Arrange
+        var request = new CreateStoryRequest("Text", null, "Hello Integration Test", null);
+
+        // Act
+        var response = await _client.PostAsJsonAsync("api/stories", request);
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+        
+        var content = await response.Content.ReadFromJsonAsync<dynamic>();
+    }
+}
+
+public record CreateStoryRequest(string Type, string? MediaUrl, string? Content, string? BgColor);

backend/Tests/Stories/UnitTests/CreateStoryCommandHandlerTests.cs

@@ -0,0 +1,76 @@
+using FluentAssertions;
+using Knot.Modules.Stories.Application.Stories.Commands.CreateStory;
+using Knot.Modules.Stories.Domain;
+using Knot.Shared.Kernel;
+using Knot.Modules.Settings.Application.Settings.Abstractions;
+using Knot.Modules.Settings.Application.Settings.DTOs;
+using Knot.Modules.Stories.Application.Abstractions;
+using NSubstitute;
+using Xunit;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Knot.Modules.Stories.UnitTests;
+
+public class CreateStoryCommandHandlerTests
+{
+    private readonly IStoryRepository _storyRepository;
+    private readonly ISettingsService _settingsService;
+    private readonly CreateStoryCommandHandler _handler;
+
+    public CreateStoryCommandHandlerTests()
+    {
+        _storyRepository = Substitute.For<IStoryRepository>();
+        _settingsService = Substitute.For<ISettingsService>();
+        _handler = new CreateStoryCommandHandler(_storyRepository, _settingsService);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldSucceed_WhenValidRequest()
+    {
+        // Arrange
+        var command = new CreateStoryCommand(Guid.NewGuid(), "Text", null, "Hello Story", null);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        await _storyRepository.Received(1).AddAsync(Arg.Any<Story>(), Arg.Any<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task Handle_ShouldFail_WhenKlipyDisabledAndKlipyType()
+    {
+        // Arrange
+        var command = new CreateStoryCommand(Guid.NewGuid(), "Klipy", "http://klipy.com/gif", null, null);
+        var settings = new SystemSettingsDto { Klipy = new KlipyConfig { Enabled = false } };
+        _settingsService.GetSettingsAsync(Arg.Any<CancellationToken>()).Returns(settings);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Code.Should().Be("Stories.KlipyDisabled");
+        await _storyRepository.DidNotReceive().AddAsync(Arg.Any<Story>(), Arg.Any<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task Handle_ShouldSucceed_WhenKlipyEnabledAndKlipyType()
+    {
+        // Arrange
+        var command = new CreateStoryCommand(Guid.NewGuid(), "Klipy", "http://klipy.com/gif", null, null);
+        var settings = new SystemSettingsDto { Klipy = new KlipyConfig { Enabled = true } };
+        _settingsService.GetSettingsAsync(Arg.Any<CancellationToken>()).Returns(settings);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        await _storyRepository.Received(1).AddAsync(Arg.Any<Story>(), Arg.Any<CancellationToken>());
+    }
+}
+

backend/Tests/Stories/UnitTests/DeleteStoryCommandHandlerTests.cs

@@ -0,0 +1,76 @@
+using FluentAssertions;
+using Knot.Modules.Stories.Application.Stories.Commands.DeleteStory;
+using Knot.Modules.Stories.Domain;
+using Knot.Shared.Kernel;
+using Knot.Modules.Stories.Application.Abstractions;
+using NSubstitute;
+using Xunit;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Knot.Modules.Stories.UnitTests;
+
+public class DeleteStoryCommandHandlerTests
+{
+    private readonly IStoryRepository _storyRepository;
+    private readonly DeleteStoryCommandHandler _handler;
+
+    public DeleteStoryCommandHandlerTests()
+    {
+        _storyRepository = Substitute.For<IStoryRepository>();
+        _handler = new DeleteStoryCommandHandler(_storyRepository);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnError_WhenStoryNotFound()
+    {
+        // Arrange
+        var command = new DeleteStoryCommand(Guid.NewGuid(), Guid.NewGuid());
+        _storyRepository.GetByIdAsync(command.StoryId, Arg.Any<CancellationToken>()).Returns((Story?)null);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Should().Be(StoryErrors.StoryNotFound);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnError_WhenUserIsNotOwner()
+    {
+        // Arrange
+        var ownerId = Guid.NewGuid();
+        var viewerId = Guid.NewGuid();
+        var story = Story.Create(ownerId, StoryType.Text, null, "Content", null);
+        var command = new DeleteStoryCommand(viewerId, story.Id);
+
+        _storyRepository.GetByIdAsync(command.StoryId, Arg.Any<CancellationToken>()).Returns(story);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Should().Be(StoryErrors.Unauthorized);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldSucceed_WhenOwnerDeletes()
+    {
+        // Arrange
+        var ownerId = Guid.NewGuid();
+        var story = Story.Create(ownerId, StoryType.Text, null, "Content", null);
+        var command = new DeleteStoryCommand(ownerId, story.Id);
+
+        _storyRepository.GetByIdAsync(command.StoryId, Arg.Any<CancellationToken>()).Returns(story);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        await _storyRepository.Received(1).DeleteAsync(story, Arg.Any<CancellationToken>());
+    }
+}

backend/Tests/Stories/UnitTests/Knot.Modules.Stories.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Stories\Knot.Modules.Stories.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/TelegramImport/UnitTests/Knot.Modules.TelegramImport.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\TelegramImport\Knot.Modules.TelegramImport.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Users/UnitTests/Knot.Modules.Profiles.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+    <PackageReference Include="FluentAssertions" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\Profiles\Knot.Modules.Profiles.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+    <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/Tests/Users/UnitTests/UpdateProfileCommandHandlerTests.cs

@@ -0,0 +1,38 @@
+using FluentAssertions;
+using Knot.Modules.Profiles.Application.Profiles.UpdateProfile;
+using Knot.Modules.Profiles.Domain;
+using Knot.Shared.Kernel;
+using NSubstitute;
+using Xunit;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Knot.Modules.Profiles.Application.Abstractions;
+
+namespace Knot.Modules.Profiles.UnitTests;
+
+public class UpdateProfileCommandHandlerTests
+{
+    private readonly IProfileRepository _profileRepository;
+    private readonly UpdateProfileCommandHandler _handler;
+
+    public UpdateProfileCommandHandlerTests()
+    {
+        _profileRepository = Substitute.For<IProfileRepository>();
+        _handler = new UpdateProfileCommandHandler(_profileRepository);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnError_WhenProfileNotFound()
+    {
+        // Arrange
+        var command = new UpdateProfileCommand(Guid.NewGuid(), "FirstName", "Bio", null);
+        _profileRepository.GetByIdAsync(command.UserId, Arg.Any<CancellationToken>()).Returns((ProfileDocument?)null);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+    }
+}

backend/Tests/WebRtc/UnitTests/Knot.Modules.WebRtc.UnitTests.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\src\Modules\WebRtc\Knot.Modules.WebRtc.csproj" />
+    <ProjectReference Include="..\..\..\src\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+      <ProjectReference Include="..\..\..\src\Modules\Settings\Knot.Modules.Settings.csproj" />
+  </ItemGroup>
+
+</Project>
+

backend/src/Contracts/Auth/Application/Abstractions/GetUsersExistence.cs

@@ -0,0 +1,7 @@
+using Knot.Shared.Kernel;
+using System;
+using System.Collections.Generic;
+
+namespace Knot.Contracts.Auth.Application.Abstractions;
+
+public record GetUsersExistenceQuery(List<Guid> UserIds) : IQuery<List<Guid>>;

backend/src/Contracts/Auth/Application/Abstractions/IJwtTokenProvider.cs

@@ -4,6 +4,7 @@ public interface IJwtTokenProvider
 {
     string GenerateAccessToken(Guid userId, string username);
     string GenerateRefreshToken();
+    DateTime GetRefreshTokenExpiry();
     string Generate(Guid userId, string username, string displayName, string? avatar);
     string Generate(Domain.UserContract user);
 }

backend/src/Contracts/Auth/Application/Auth/DTOs/AuthErrors.cs

@@ -7,5 +7,7 @@ public static class AuthErrors
     public static Error IdentityInvalidCredentials => new("Auth.InvalidCredentials", "Invalid credentials");
     public static Error IdentityRegistrationDisabled => new("Auth.RegistrationDisabled", "Registration is disabled");
     public static Error IdentityUsernameNotUnique => new("Auth.UsernameNotUnique", "Username is already taken");
+    public static Error IdentityRegistrationFailed => new("Auth.RegistrationFailed", "Failed to register user");
+    public static Error RefreshTokenExpired => new("Auth.RefreshTokenExpired", "Refresh token has expired. Please login again.");
     public static Error UserNotFound => new("Auth.UserNotFound", "User not found");
 }

backend/src/Contracts/Auth/Application/Auth/DTOs/AuthResponseDto.cs

@@ -1,4 +1,4 @@
-namespace Knot.Contracts.Auth.Application.Auth.DTOs;
+namespace Knot.Contracts.Auth.Application.Auth.DTOs;
 
 public class AuthResponseDto
 {
@@ -7,6 +7,7 @@ public class AuthResponseDto
     public Guid UserId { get; set; }
     public string Username { get; set; } = string.Empty;
     public string? DisplayName { get; set; }
+    public string? Avatar { get; set; }
 }
 
 public class ResetPasswordDto

backend/src/Contracts/Auth/Domain/UserContract.cs

@@ -19,4 +19,12 @@ public class UserContract
     public bool IsExternal { get; set; }
     public string? Domain { get; set; }
     public DateTime? LastSeen { get; set; }
+    public string? RefreshToken { get; set; }
+    public DateTime? RefreshTokenExpiry { get; set; }
+
+    public void SetRefreshToken(string? refreshToken, DateTime? expiry = null)
+    {
+        RefreshToken = refreshToken;
+        RefreshTokenExpiry = expiry;
+    }
 }

backend/src/Contracts/Conversations/Abstractions/IChatQueryService.cs

@@ -10,9 +10,4 @@ public interface IChatQueryService
     Task<List<ChatInfo>> GetAllChatsAsync(CancellationToken cancellationToken);
 }
 
-public interface IUserDeleterService
-{
-    Task DeleteUserAsync(Guid userId, CancellationToken cancellationToken);
-}
-
 public record ChatInfo(Guid Id, string? Avatar);

backend/src/Contracts/Conversations/Abstractions/IUserDeleterService.cs

@@ -3,7 +3,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Knot.Shared.Kernel;
 
-namespace Knot.Modules.Conversations.Application.Abstractions;
+namespace Knot.Contracts.Conversations.Abstractions;
 
 public interface IUserDeleterService
 {

backend/src/Contracts/Conversations/Application/Abstractions/IIdempotencyStore.cs

@@ -0,0 +1,17 @@
+namespace Knot.Contracts.Conversations.Application.Abstractions;
+
+/// <summary>
+/// Хранилище для обеспечения идемпотентности операций.
+/// Если ключ уже существует — возвращает сохранённый результат без повторного выполнения.
+/// </summary>
+public interface IIdempotencyStore
+{
+    /// <summary>
+    /// Возвращает сохранённый результат по ключу или выполняет factory, сохраняет и возвращает результат.
+    /// </summary>
+    Task<T> GetOrCreateAsync<T>(
+        string key,
+        Func<CancellationToken, Task<T>> factory,
+        TimeSpan? expiration = null,
+        CancellationToken cancellationToken = default);
+}

backend/src/Contracts/Conversations/Domain/Chat.cs

@@ -36,17 +36,21 @@ public sealed class Chat : AggregateRoot<Guid>
     public string? Avatar { get; private set; }
     public DateTime CreatedAt { get; private set; }
     public long LastMessageSequenceId { get; private set; }
+    public bool IsImporting { get; private set; }
+    public Guid? ImportJobId { get; private set; }
 
     private readonly List<ChatMember> _members = new();
     public IReadOnlyCollection<ChatMember> Members => _members.AsReadOnly();
 
-    private Chat(Guid id, ChatType type, string? name, string? avatar, string? description = null) : base(id)
+    private Chat(Guid id, ChatType type, string? name, string? avatar, string? description = null, bool isImporting = false, Guid? importJobId = null) : base(id)
     {
         Type = type;
         Name = name;
         Avatar = avatar;
         Description = description;
         CreatedAt = DateTime.UtcNow;
+        IsImporting = isImporting;
+        ImportJobId = importJobId;
     }
 
     public static Chat CreatePersonal()
@@ -63,13 +67,18 @@ public sealed class Chat : AggregateRoot<Guid>
         return chat;
     }
 
-    public static Chat Create(string? name, ChatType type, string? avatar = null, string? description = null)
+    public static Chat Create(string? name, ChatType type, string? avatar = null, string? description = null, bool isImporting = false, Guid? importJobId = null)
     {
-        var chat = new Chat(Guid.NewGuid(), type, name, avatar, description);
+        var chat = new Chat(Guid.NewGuid(), type, name, avatar, description, isImporting, importJobId);
         chat.RaiseDomainEvent(new ChatCreatedDomainEvent(chat));
         return chat;
     }
 
+    public void CompleteImport()
+    {
+        IsImporting = false;
+    }
+
     public void AddMember(Guid userId, string role = "member")
     {
         if (_members.Any(m => m.UserId == userId))

backend/src/Contracts/Conversations/Domain/ChatConstants.cs

@@ -0,0 +1,8 @@
+namespace Knot.Contracts.Conversations.Domain;
+
+public static class ChatConstants
+{
+    public const int DefaultMessageQueryLimit = 50;
+    public const int MaxSharedMediaQueryLimit = 1000;
+    public const int MaxGroupNameLength = 100;
+}

backend/src/Contracts/Conversations/Domain/ChatErrors.cs

@@ -0,0 +1,19 @@
+using Knot.Shared.Kernel;
+
+namespace Knot.Contracts.Conversations.Domain;
+
+public static class ChatErrors
+{
+    public static readonly Error ChatNotFound = new Error("Chat.NotFound", "Чат не найден");
+    public static readonly Error OnlyOwnerCanUpdate = new Error("Chat.OnlyOwnerCanUpdate", "Только владелец может редактировать чат");
+    public static readonly Error Unauthorized = new Error("Chat.Unauthorized", "Нет доступа к этому чату");
+    public static readonly Error FoldersDisabled = new Error("Chat.FoldersDisabled", "Папки отключены");
+    public static readonly Error FileEmpty = new Error("Chat.FileEmpty", "Файл пуст");
+    public static Error FileTooLarge(long maxMb) => new Error("Chat.FileTooLarge", $"Файл слишком большой (максимум {maxMb} МБ)");
+    public static readonly Error ChatsNotFound = new Error("Chat.NotFound", "Чат не найден");
+    public static readonly Error ChatsForbidden = new Error("Chat.Forbidden", "Доступ запрещен");
+    public static readonly Error MediaDisabled = new Error("Chat.MediaDisabled", "Медиафайлы отключены");
+    public static readonly Error PollsDisabled = new Error("Chat.PollsDisabled", "Опросы отключены");
+    public static readonly Error NotFound = new Error("Chat.NotFound", "Не найдено");
+    public static readonly Error NotMember = new Error("Chat.NotMember", "Вы не являетесь участником чата");
+}

backend/src/Contracts/Messaging/Application/Abstractions/IMessageNotifier.cs

@@ -3,4 +3,5 @@ namespace Knot.Contracts.Messaging.Application.Abstractions;
 public interface IMessageNotifier 
 { 
     Task NotifyNewMessageAsync(Guid chatId, object messagePayload, CancellationToken cancellationToken); 
+    Task NotifyMessageUpdateAsync(Guid chatId, string updateType, object updatePayload, CancellationToken cancellationToken); 
 }

backend/src/Contracts/Messaging/Application/Abstractions/IMessageRepository.cs

@@ -8,9 +8,11 @@ public interface IMessageRepository
     Task<Message?> GetByIdAsync(Guid id, CancellationToken cancellationToken);
     Task<List<Message>> GetChatMessagesAsync(Guid chatId, int limit, int offset, CancellationToken cancellationToken);
     Task<Message?> GetLatestChatMessageAsync(Guid chatId, CancellationToken cancellationToken);
+    Task<List<Message>> GetPinnedMessagesAsync(Guid chatId, CancellationToken cancellationToken);
     Task<List<Message>> SearchMessagesAsync(string query, Guid? chatId, Guid requestingUserId, CancellationToken cancellationToken);
 
-    Task<List<Message>> GetChatMessagesCursorAsync(Guid chatId, DateTime? cursor, int limit, CancellationToken cancellationToken);
+    Task<List<Message>> GetChatMessagesCursorAsync(Guid chatId, DateTime? cursor, long? sequenceId, int limit, CancellationToken cancellationToken);
+    Task<List<Message>> GetChatMessagesAroundAsync(Guid chatId, long sequenceId, int limit, CancellationToken cancellationToken);
     Task<Message?> GetLastStoryMessageAsync(Guid chatId, Guid storyId, CancellationToken cancellationToken);
 
     Task UpdateAsync(Message message, CancellationToken cancellationToken);

backend/src/Contracts/Messaging/Domain/CallMessage.cs

@@ -0,0 +1,33 @@
+using System;
+
+namespace Knot.Contracts.Messaging.Domain;
+
+public class CallMessage : Message
+{
+    public override string Type => "call";
+    public override string? Content { get; protected set; }
+    public string CallType { get; protected set; }
+    public string CallStatus { get; protected set; }
+    public int? Duration { get; protected set; }
+
+    public CallMessage() : base() { }
+
+    public CallMessage(
+        Guid id, 
+        Guid chatId, 
+        Guid senderId, 
+        string callType, 
+        string callStatus, 
+        int? duration,
+        Guid? replyToId, 
+        Guid? forwardedFromId, 
+        DateTime createdAt, 
+        bool isImported = false) 
+        : base(id, chatId, senderId, replyToId, forwardedFromId, createdAt, isImported)
+    {
+        CallType = callType;
+        CallStatus = callStatus;
+        Duration = duration;
+        Content = $"Call {callStatus}";
+    }
+}

backend/src/Contracts/Messaging/Domain/Media.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace Knot.Contracts.Messaging.Domain;
+
+public class Media
+{
+    public Guid Id { get; set; }
+    public string Type { get; set; } = string.Empty;
+    public string? Url { get; set; }
+    public string? ThumbnailUrl { get; set; }
+    public long? Size { get; set; }
+    public int Width { get; set; }
+    public int Height { get; set; }
+    public string? FileId { get; set; }
+    public string? Filename { get; set; }
+    public string? Duration { get; set; }
+}

backend/src/Contracts/Messaging/Domain/MediaMessage.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+
+namespace Knot.Contracts.Messaging.Domain;
+
+public class MediaMessage : Message
+{
+    public override string Type => MediaType.ToString().ToLower();
+    public override string? Content { get; protected set; }
+    public string? Caption { get => Content; private set => Content = value; }
+    public MediaType MediaType { get; private set; }
+    
+    private List<Media> _media = new();
+    public IReadOnlyCollection<Media> Media => _media.AsReadOnly();
+
+    private MediaMessage() : base() { MediaType = MediaType.File; }
+
+    public MediaMessage(Guid id, Guid chatId, Guid senderId, MediaType mediaType, string? caption, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
+        : base(id, chatId, senderId, replyToId, forwardedFromId, createdAt, isImported) { MediaType = mediaType; Caption = caption; }
+
+    public MediaMessage(Guid id, Guid chatId, Guid senderId, string mediaType, string? caption, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
+        : this(id, chatId, senderId, Enum.TryParse<MediaType>(mediaType, true, out var mt) ? mt : MediaType.File, caption, replyToId, forwardedFromId, createdAt, isImported) { }
+
+    public void AddMedia(string type, string url, string? filename, long? size, string? duration = null) => _media.Add(new Media { Type = type, Url = url, Filename = filename, FileId = filename, Size = size, Duration = duration });
+
+    public override void Edit(string newCaption) => base.Edit(newCaption);
+
+    public override void Delete() { Caption = null; base.Delete(); }
+}

backend/src/Contracts/Messaging/Domain/Message.cs

@@ -16,18 +16,17 @@ public abstract class Message : AggregateRoot<Guid>
     public MessageState State { get; protected set; }
     public abstract string Type { get; }
     public abstract string? Content { get; protected set; }
-    public virtual string? Quote { get; protected set; } = null;
+
-    public virtual Guid? StoryId => null;
-    public virtual string? StoryMediaUrl => null;
-    public virtual string? StoryMediaType => null;
-    public virtual IReadOnlyCollection<Media> Media => Array.Empty<Media>();
     public bool IsEdited => HasState(MessageState.IsEdited);
     public bool IsDeleted => HasState(MessageState.IsDeleted);
-    public bool IsDeletedForUser(Guid userId) => _deletedFor.Exists(d => d.UserId == userId);
+    
     protected List<DeletedMessage> _deletedFor = new();
     public IReadOnlyCollection<DeletedMessage> DeletedFor => _deletedFor.AsReadOnly();
+
     protected Message() : base(Guid.Empty) { }
-    protected Message(Guid id, Guid chatId, Guid senderId, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported) : base(id)
+
+    protected Message(Guid id, Guid chatId, Guid senderId, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported) 
+        : base(id)
     {
         ChatId = chatId;
         SenderId = senderId;
@@ -36,91 +35,22 @@ public abstract class Message : AggregateRoot<Guid>
         CreatedAt = createdAt;
         if (isImported) AddState(MessageState.IsImported);
     }
+
     public void AddState(MessageState state) => State |= state;
     public void RemoveState(MessageState state) => State &= ~state;
     public bool HasState(MessageState state) => (State & state) == state;
+    public bool IsDeletedForUser(Guid userId) => _deletedFor.Exists(d => d.UserId == userId);
+
     public virtual void Delete() => AddState(MessageState.IsDeleted);
-    public virtual void Edit(string newContent) { Content = newContent; AddState(MessageState.IsEdited); }
+    public virtual void Edit(string newContent) 
-    public void DeleteForUser(Guid userId) { if (!_deletedFor.Exists(x => x.UserId == userId)) _deletedFor.Add(new DeletedMessage(Id, userId)); }
-}
-
-public class Media
-{
-    public Guid Id { get; set; }
-    public string Type { get; set; } = string.Empty;
-    public string? Url { get; set; }
-    public string? ThumbnailUrl { get; set; }
-    public long? Size { get; set; }
-    public int Width { get; set; }
-    public int Height { get; set; }
-    public string? FileId { get; set; }
-    public string? Filename { get; set; }
-    public string? Duration { get; set; }
-}
-
-public class TextMessage : Message
-{
-    public override string Type => "text";
-    public override string? Content { get; protected set; }
-    public TextMessage() : base() { }
-    public TextMessage(Guid id, Guid chatId, Guid senderId, string content, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported = false)
-        : base(id, chatId, senderId, replyToId, forwardedFromId, createdAt, isImported) => Content = content;
-    public TextMessage(Guid id, Guid chatId, Guid senderId, string content, Guid? replyToId, string? quote, Guid? forwardedFromId, DateTime createdAt, bool isImported = false)
-        : this(id, chatId, senderId, content, replyToId, forwardedFromId, createdAt, isImported) => Quote = quote;
-}
-
-public class MediaMessage : Message
-{
-    public override string Type => MediaType.ToString().ToLower();
-    public override string? Content { get; protected set; }
-    public string? Caption { get => Content; private set => Content = value; }
-    public MediaType MediaType { get; private set; }
-    private List<Media> _media = new();
-    public override IReadOnlyCollection<Media> Media => _media.AsReadOnly();
-    private MediaMessage() : base() { MediaType = MediaType.File; }
-    public MediaMessage(Guid id, Guid chatId, Guid senderId, MediaType mediaType, string? caption, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
-        : base(id, chatId, senderId, replyToId, forwardedFromId, createdAt, isImported) { MediaType = mediaType; Caption = caption; }
-    public MediaMessage(Guid id, Guid chatId, Guid senderId, string mediaType, string? caption, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
-        : this(id, chatId, senderId, Enum.TryParse<MediaType>(mediaType, true, out var mt) ? mt : MediaType.File, caption, replyToId, forwardedFromId, createdAt, isImported) { }
-    public void AddMedia(string type, string url, string? filename, long? size) => _media.Add(new Media { Type = type, Url = url, FileId = filename, Size = size });
-    public override void Edit(string newCaption) => base.Edit(newCaption);
-    public override void Delete() { Caption = null; base.Delete(); }
-}
-
-public class StoryMessage : Message
-{
-    public override string Type => "story";
-    public override string? Content { get; protected set; }
-    public override Guid? StoryId { get; }
-    public string? InternalStoryMediaUrl { get; private set; }
-    public override string? StoryMediaUrl => InternalStoryMediaUrl;
-    public override string? StoryMediaType { get; }
-    public StoryMessage() : base() { }
-    public StoryMessage(Guid id, Guid chatId, Guid senderId, Guid storyId, string? storyMediaUrl, string? storyMediaType, DateTime createdAt)
-        : base(id, chatId, senderId, null, null, createdAt, false) { StoryId = storyId; InternalStoryMediaUrl = storyMediaUrl; StoryMediaType = storyMediaType; }
-    public StoryMessage(Guid id, Guid chatId, Guid senderId, Guid storyId, string? storyMediaUrl, string? storyMediaType, string? content, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
-        : this(id, chatId, senderId, storyId, storyMediaUrl, storyMediaType, createdAt) { Content = content; ReplyToId = replyToId; ForwardedFromId = forwardedFromId; if (isImported) AddState(MessageState.IsImported); }
-}
-
-public class PollMessage : Message
-{
-    public override string Type => "poll";
-    public override string? Content { get; protected set; }
-    public List<PollOption> Options { get; } = new();
-    public List<PollVote> Votes { get; } = new();
-    public bool IsMultipleChoice { get; set; }
-    public DateTime? ExpiresAt { get; set; }
-    public bool IsClosed { get; set; }
-    public PollMessage() : base() { }
-    public PollMessage(Guid id, Guid chatId, Guid senderId, string? question, List<string>? options, bool isAnonymous, bool isMultiple, DateTime? expiresAt, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
-        : base(id, chatId, senderId, replyToId, forwardedFromId, createdAt, isImported)
     { 
-        Content = question ?? "Poll";
+        Content = newContent; 
-        if (options != null) foreach (var opt in options) Options.Add(new PollOption { Text = opt });
+        AddState(MessageState.IsEdited); 
-        IsMultipleChoice = isMultiple;
+    }
-        ExpiresAt = expiresAt;
+
+    public void DeleteForUser(Guid userId) 
+    { 
+        if (!_deletedFor.Exists(x => x.UserId == userId)) 
+            _deletedFor.Add(new DeletedMessage(Id, userId)); 
     }
 }
-
-public class PollOption { public string Text { get; set; } = string.Empty; public int VoteCount { get; set; } }
-public class PollVote { public Guid OptionIndex { get; set; } public Guid UserId { get; set; } public DateTime VotedAt { get; set; } }

backend/src/Contracts/Messaging/Domain/PollMessage.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+
+namespace Knot.Contracts.Messaging.Domain;
+
+public class PollMessage : Message
+{
+    public override string Type => "poll";
+    public override string? Content { get; protected set; }
+    public List<PollOption> Options { get; set; } = new();
+    public List<PollVote> Votes { get; set; } = new();
+    public bool IsMultipleChoice { get; set; }
+    public bool IsAnonymous { get; set; }
+    public DateTime? ExpiresAt { get; set; }
+    public bool IsClosed { get; set; }
+
+    public PollMessage() : base() { }
+
+    public PollMessage(Guid id, Guid chatId, Guid senderId, string? question, List<PollOption>? options, bool isAnonymous, bool isMultiple, DateTime? expiresAt, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
+        : base(id, chatId, senderId, replyToId, forwardedFromId, createdAt, isImported)
+    {
+        Content = question ?? "Poll";
+        Options = options ?? new List<PollOption>();
+        IsAnonymous = isAnonymous;
+        IsMultipleChoice = isMultiple;
+        ExpiresAt = expiresAt;
+    }
+
+    public static PollMessage Create(Guid id, Guid chatId, Guid senderId, string? question, List<string> options, bool isAnonymous, bool isMultiple, DateTime? expiresAt, Guid? replyToId, Guid? forwardedFromId)
+    {
+        var poll = new PollMessage(id, chatId, senderId, question, null, isAnonymous, isMultiple, expiresAt, replyToId, forwardedFromId, DateTime.UtcNow, false);
+        foreach (var opt in options)
+        {
+            poll.Options.Add(new PollOption { Text = opt });
+        }
+        return poll;
+    }
+}

backend/src/Contracts/Messaging/Domain/PollOption.cs

@@ -0,0 +1,8 @@
+namespace Knot.Contracts.Messaging.Domain;
+
+public class PollOption 
+{ 
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public string Text { get; set; } = string.Empty; 
+    public int VoteCount { get; set; } 
+}

backend/src/Contracts/Messaging/Domain/PollVote.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace Knot.Contracts.Messaging.Domain;
+
+public class PollVote 
+{ 
+    public Guid OptionId { get; set; } 
+    public Guid UserId { get; set; } 
+    public DateTime VotedAt { get; set; } 
+}

backend/src/Contracts/Messaging/Domain/StoryMessage.cs

@@ -0,0 +1,31 @@
+using System;
+
+namespace Knot.Contracts.Messaging.Domain;
+
+public class StoryMessage : Message
+{
+    public override string Type => "story";
+    public override string? Content { get; protected set; }
+    public Guid? StoryId { get; private set; }
+    public string? StoryMediaUrl { get; private set; }
+    public string? StoryMediaType { get; private set; }
+
+    public StoryMessage() : base() { }
+
+    public StoryMessage(Guid id, Guid chatId, Guid senderId, Guid storyId, string? storyMediaUrl, string? storyMediaType, DateTime createdAt)
+        : base(id, chatId, senderId, null, null, createdAt, false) 
+    { 
+        StoryId = storyId; 
+        StoryMediaUrl = storyMediaUrl; 
+        StoryMediaType = storyMediaType; 
+    }
+
+    public StoryMessage(Guid id, Guid chatId, Guid senderId, Guid storyId, string? storyMediaUrl, string? storyMediaType, string? content, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported)
+        : this(id, chatId, senderId, storyId, storyMediaUrl, storyMediaType, createdAt) 
+    { 
+        Content = content; 
+        ReplyToId = replyToId; 
+        ForwardedFromId = forwardedFromId; 
+        if (isImported) AddState(MessageState.IsImported); 
+    }
+}

backend/src/Contracts/Messaging/Domain/TextMessage.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace Knot.Contracts.Messaging.Domain;
+
+public class TextMessage : Message
+{
+    public override string Type => "text";
+    public override string? Content { get; protected set; }
+    public string? Quote { get; protected set; }
+
+    public TextMessage() : base() { }
+
+    public TextMessage(Guid id, Guid chatId, Guid senderId, string content, Guid? replyToId, Guid? forwardedFromId, DateTime createdAt, bool isImported = false)
+        : base(id, chatId, senderId, replyToId, forwardedFromId, createdAt, isImported) => Content = content;
+
+    public TextMessage(Guid id, Guid chatId, Guid senderId, string content, Guid? replyToId, string? quote, Guid? forwardedFromId, DateTime createdAt, bool isImported = false)
+        : this(id, chatId, senderId, content, replyToId, forwardedFromId, createdAt, isImported) => Quote = quote;
+}

backend/src/Contracts/Profiles/Application/DTOs/UserProfileDto.cs

@@ -1,14 +1,16 @@
-namespace Knot.Contracts.Profiles.Application.DTOs;
+namespace Knot.Contracts.Profiles.Application.DTOs;
 
 public class UserProfileDto
 {
     public Guid UserId { get; set; }
+    public Guid Id { get => UserId; set => UserId = value; }
     public string? DisplayName { get; set; }
     public string? Username { get; set; }
     public string? About { get; set; }
     public string? Avatar { get; set; }
     public bool IsBot { get; set; }
     public DateTime? LastSeen { get; set; }
+    public DateTime? Birthday { get; set; }
     public bool IsPremium { get; set; }
     public DateTime CreatedAt { get; set; }
 }

backend/src/Contracts/Profiles/Domain/IProfileRepository.cs

@@ -1,4 +1,4 @@
-using Knot.Contracts.Profiles.Application.DTOs;
+using Knot.Contracts.Profiles.Application.DTOs;
 using Knot.Shared.Kernel;
 
 namespace Knot.Contracts.Profiles.Domain;
@@ -12,4 +12,5 @@ public interface IProfileRepository
     Task<Result<UserProfileDto>> CreateAsync(UserProfileDto dto, CancellationToken cancellationToken = default);
     Task<Result<UserProfileDto>> UpdateAsync(UserProfileDto dto, CancellationToken cancellationToken = default);
     Task<Result> DeleteAsync(Guid userId, CancellationToken cancellationToken = default);
+    Task<Result> UpdateStatusAsync(Guid userId, bool isBanned, bool isDeleted, CancellationToken ct = default);
 }

backend/src/Contracts/Relations/Application/Contacts/CheckBlockedStatus.cs

@@ -0,0 +1,7 @@
+using Knot.Shared.Kernel;
+using System;
+using System.Collections.Generic;
+
+namespace Knot.Contracts.Relations.Application.Contacts;
+
+public record CheckBlockedStatusQuery(Guid UserId, List<Guid> CandidateIds) : IQuery<List<Guid>>;

backend/src/Contracts/Relations/Application/Contacts/GetBlockedUserIds.cs

@@ -0,0 +1,7 @@
+using Knot.Shared.Kernel;
+using System;
+using System.Collections.Generic;
+
+namespace Knot.Contracts.Relations.Application.Contacts;
+
+public record GetBlockedUserIdsQuery(Guid UserId) : IQuery<List<Guid>>;

backend/src/Contracts/Settings/Abstractions/IStatisticsService.cs

@@ -1,37 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace Knot.Contracts.Settings.Abstractions;
-
-public interface IStatisticsService
-{
-    Task<DashboardStatsDto> GetDashboardStatsAsync(CancellationToken cancellationToken = default);
-}
-
-public class DashboardStatsDto
-{
-    public long StorageUsedBytes { get; set; }
-    public long StorageLimitBytes { get; set; }
-    public long OnlineUsers { get; set; }
-    public long OfflineUsers { get; set; }
-    public long TotalUsers { get; set; }
-    public List<ActivityStatDto> ActivityTimeline { get; set; } = new();
-    public List<TopUserDto> TopUsersByMessages { get; set; } = new();
-    public List<TopUserDto> TopUsersByStorage { get; set; } = new();
-}
-
-public class ActivityStatDto
-{
-    public DateTime Date { get; set; }
-    public long Messages { get; set; }
-    public long FilesSize { get; set; }
-}
-
-public class TopUserDto
-{
-    public Guid UserId { get; set; }
-    public string Username { get; set; } = string.Empty;
-    public long Value { get; set; } // messages count or bytes
-}

backend/src/Contracts/Settings/Application/DTOs/SystemSettingsDto.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 
 namespace Knot.Contracts.Settings.Application.DTOs;
 
@@ -53,6 +53,7 @@ public class MessagesConfig
 public class WebRtcConfig
 {
     public bool Enabled { get; set; } = false;
+    public bool EnableVoiceCalls { get; set; } = true;
     public bool EnableVideoCalls { get; set; } = true;
     public bool EnableScreenSharing { get; set; } = true;
     public string TurnHost { get; set; } = string.Empty;

backend/src/Host/Host.csproj

@@ -8,7 +8,6 @@
 
   <ItemGroup>
     <PackageReference Include="AngleSharp" Version="1.4.0" />
-    <PackageReference Include="Carter" Version="10.0.0" />
     <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="12.1.1" />
     <PackageReference Include="HtmlAgilityPack" Version="1.12.4" />
     <PackageReference Include="Mapster" Version="7.4.0" />

backend/src/Host/Program.cs

@@ -1,31 +1,47 @@
-using Knot.Modules.Messaging;
-using Carter;
-using Knot.Shared.Infrastructure;
-using Knot.Modules.Auth;
-using Knot.Modules.Profiles;
-using Knot.Modules.Settings;
-using Knot.Modules.Admin;
-using Knot.Modules.Conversations;
-using Knot.Modules.Conversations.Infrastructure.SignalR;
-using Knot.Modules.Auth.Infrastructure.Persistence;
-using Knot.Modules.Conversations.Infrastructure.Persistence;
-using Knot.Modules.Storage;
-using Knot.Modules.Stories;
-using Knot.Modules.Klipy;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.AspNetCore.Authentication.JwtBearer;
-using Microsoft.IdentityModel.Tokens;
-using System.Text;
 using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Text;
 using System.Text.Json;
 using System.Text.Json.Serialization;
-using Microsoft.Extensions.FileProviders;
+using Knot.Modules.Admin;
+using Knot.Modules.Admin.Presentation.Endpoints;
+using Knot.Modules.Auth;
+using Knot.Modules.Auth.Infrastructure.Persistence;
+using Knot.Modules.Auth.Presentation.Endpoints;
+using Knot.Modules.Conversations;
+using Knot.Modules.Conversations.Infrastructure.Persistence;
+using Knot.Modules.Conversations.Infrastructure.SignalR;
+using Knot.Modules.Conversations.Presentation.Endpoints;
+using Knot.Modules.Federation;
+using Knot.Modules.Federation.Presentation.Endpoints;
+using Knot.Modules.Klipy;
+using Knot.Modules.Klipy.Presentation.Endpoints;
+using Knot.Modules.Messaging;
+using Knot.Modules.Profiles;
+using Knot.Modules.Profiles.Presentation.Endpoints;
+using Knot.Modules.Relations;
+using Knot.Modules.Relations.Presentation.Endpoints;
+using Knot.Modules.Settings;
+using Knot.Modules.Settings.Presentation.Endpoints;
+using Knot.Modules.Storage;
+using Knot.Modules.Storage.Presentation.Endpoints;
+using Knot.Modules.Stories;
+using Knot.Modules.Stories.Presentation.Endpoints;
+using Knot.Modules.TelegramImport;
+using Knot.Modules.TelegramImport.Presentation.Endpoints;
+using Knot.Modules.WebRtc;
+using Knot.Modules.WebRtc.Presentation.Endpoints;
+using Knot.Shared.Infrastructure;
+using MediatR;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.AspNetCore.SignalR;
-using System.Security.Claims;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.IdentityModel.Tokens;
 
 
 
 JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Clear();
+Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -33,7 +49,7 @@ var builder = WebApplication.CreateBuilder(args);
 // Маппинг стандартных переменных окружения в иерархию .NET
 var envMappings = new Dictionary<string, string?>
 {
-    ["ConnectionStrings:DefaultConnection"] = builder.Configuration["DATABASE_URL"] ?? "Host=localhost;Database=knot;Username=postgres;Password=postgres",
+    ["ConnectionStrings:DefaultConnection"] = builder.Configuration["DATABASE_URL"] ?? builder.Configuration.GetConnectionString("DefaultConnection") ?? "Host=localhost;Database=knot;Username=postgres;Password=postgres",
     ["ConnectionStrings:MongoConnection"] = builder.Configuration["MONGO_CONNECTION"],
     ["Jwt:Secret"] = builder.Configuration["JWT_SECRET"],
     ["Jwt:Issuer"] = builder.Configuration["JWT_ISSUER"],
@@ -60,10 +76,13 @@ builder.Services.AddSettingsModule(builder.Configuration);
 builder.Services.AddMessagingModule(builder.Configuration);
 builder.Services.AddConversationsModule(builder.Configuration);
 builder.Services.AddProfilesModule(builder.Configuration);
+builder.Services.AddRelationsModule(builder.Configuration);
 builder.Services.AddStorageModule(builder.Configuration);
 builder.Services.AddStoriesModule(builder.Configuration);
 builder.Services.AddKlipyModule();
 builder.Services.AddAdminModule();
+builder.Services.AddWebRtcModule();
+builder.Services.AddTelegramImportModule();
 builder.Services.AddSharedInfrastructure(builder.Configuration);
 
 // CQRS / MediatR для команд в Host (например, AdminController)
@@ -74,12 +93,14 @@ builder.Services.AddMediatR(cfg => cfg.RegisterServicesFromAssemblies(
     typeof(Knot.Modules.Messaging.DependencyInjection).Assembly,
     typeof(Knot.Modules.Conversations.DependencyInjection).Assembly,
     typeof(Knot.Modules.Stories.DependencyInjection).Assembly,
-    typeof(Knot.Modules.Klipy.DependencyInjection).Assembly
+    typeof(Knot.Modules.Klipy.DependencyInjection).Assembly,
+    typeof(Knot.Modules.Relations.DependencyInjection).Assembly,
+    typeof(Knot.Modules.WebRtc.DependencyInjection).Assembly,
+    typeof(Knot.Modules.TelegramImport.DependencyInjection).Assembly,
+    typeof(Knot.Modules.Auth.Infrastructure.Persistence.AuthDbContext).Assembly,
+    typeof(Knot.Modules.Profiles.DependencyInjection).Assembly
 ));
 
-// Carter для вызова Minimal APIs (Endpoints)
-builder.Services.AddCarter();
-
 // Настройка CORS
 builder.Services.AddCors(options =>
 {
@@ -185,6 +206,9 @@ using (var scope = app.Services.CreateScope())
     var storiesDb = scope.ServiceProvider.GetRequiredService<Knot.Modules.Stories.Infrastructure.Database.StoriesDbContext>();
     await storiesDb.Database.MigrateAsync();
 
+    var relationsDb = scope.ServiceProvider.GetRequiredService<Knot.Modules.Relations.Infrastructure.Persistence.RelationsDbContext>();
+    await relationsDb.Database.MigrateAsync();
+
     // Set Encryption Service for MongoDB serializers
     var encryptionService = scope.ServiceProvider.GetRequiredService<Knot.Shared.Kernel.Security.IEncryptionService>();
     Knot.Modules.Messaging.Infrastructure.Persistence.Mongo.EncryptedStringSerializer.EncryptionService = encryptionService;
@@ -195,6 +219,10 @@ using (var scope = app.Services.CreateScope())
     {
         concreteSettings.Initialize();
     }
+
+    // Sync user replicas for Relations module on startup
+    var mediator = scope.ServiceProvider.GetRequiredService<IMediator>();
+    await mediator.Send(new Knot.Modules.Relations.Application.Contacts.SyncReplicasCommand());
 }
 
 // Настройка конвейера запросов
@@ -216,8 +244,20 @@ if (app.Environment.IsDevelopment())
 app.UseAuthentication();
 app.UseAuthorization();
 
-// Добавляем контроллеры и Carter (Minimal APIs)
+// Регистрация эндпоинтов
-app.MapCarter();
+app.MapAuthEndpoints();
+app.MapStoriesEndpoints();
+app.MapContactsEndpoints();
+app.MapSettingsEndpoints();
+app.MapProfilesEndpoints();
+app.MapFederationEndpoints();
+app.MapKlipyEndpoints();
+app.MapChatsEndpoints();
+app.MapMessagesEndpoints();
+app.MapAdminEndpoints();
+app.MapFilesEndpoints();
+app.MapWebRtcEndpoints();
+app.MapTelegramImportEndpoints();
 
 // Добавляем SignalR хабы
 app.MapHub<ChatHub>("/hubs/chat");

backend/src/Host/appsettings.json

@@ -13,7 +13,8 @@
     "Secret": "knot_super_secret_key_1234567890_knot",
     "Issuer": "Knot",
     "Audience": "KnotUsers",
-    "ExpiryInMinutes": 1440
+    "ExpiryInMinutes": 1440,
+    "RefreshExpiryInDays": 30
   },
   "KNOT_MASTER_ENCRYPTION_KEY": "knot_super_secret_key_1234567890_knot"
 }

backend/src/Modules/Admin/Application/Admin/Commands/CleanRun/CleanRunCommand.cs

@@ -8,7 +8,7 @@ using Knot.Contracts.Auth.Infrastructure.Persistence;
 using Knot.Contracts.Conversations.Domain;
 using Knot.Contracts.Conversations.Infrastructure.Persistence;
 using Knot.Contracts.Messaging.Application.Abstractions;
-using Knot.Contracts.Storage.Abstractions;
+using Knot.Shared.Kernel.Storage;
 using Knot.Contracts.Stories.Infrastructure.Persistence;
 using Knot.Modules.Admin.Application.Admin.DTOs;
 using MediatR;
@@ -51,7 +51,7 @@ internal sealed class CleanRunCommandHandler : ICommandHandler<CleanRunCommand,
             var orphanMessages = await _messageQueryService.GetOrphanedMessagesAsync(activeChatIds, cancellationToken);
 
             var keptMessages = allMessages
-                .Where(m => !orphanMessages.Any(om => om.Id == m.Id))
+                .Where(m => !orphanMessages.Any(om => om.Id == m.Id) && !m.IsDeleted)
                 .ToList();
 
             var allMinioFiles = (await _fileStorage.ListFilesAsync()).ToList();

backend/src/Modules/Admin/Application/Admin/Commands/CreateUser/CreateUserCommand.cs

@@ -0,0 +1,68 @@
+using BCrypt.Net;
+using Knot.Contracts.Auth.Application.Abstractions;
+using Knot.Contracts.Auth.Domain;
+using Knot.Modules.Admin.Application.Admin.DTOs;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Admin.Application.Admin.Commands.CreateUser;
+
+public record CreateUserCommand(
+    string Username,
+    string Password,
+    string DisplayName,
+    string? Email = null,
+    string? Bio = null
+) : ICommand<AdminUserDto>;
+
+internal sealed class CreateUserCommandHandler : ICommandHandler<CreateUserCommand, AdminUserDto>
+{
+    private readonly IUserRepository _userRepository;
+    private readonly IAuthUnitOfWork _unitOfWork;
+
+    public CreateUserCommandHandler(IUserRepository userRepository, IAuthUnitOfWork unitOfWork)
+    {
+        _userRepository = userRepository;
+        _unitOfWork = unitOfWork;
+    }
+
+    public async Task<Result<AdminUserDto>> Handle(CreateUserCommand request, CancellationToken cancellationToken)
+    {
+        // Проверка уникальности username
+        if (!await _userRepository.IsUsernameUniqueAsync(request.Username, cancellationToken))
+        {
+            return Result.Failure<AdminUserDto>(new Error("Admin.CreateUser.UsernameNotUnique", "Username is already taken"));
+        }
+
+        // Хеширование пароля
+        string passwordHash = BCrypt.Net.BCrypt.HashPassword(request.Password);
+
+        // Создание контракта пользователя
+        var userContract = new UserContract
+        {
+            Id = Guid.NewGuid(),
+            Username = request.Username,
+            PasswordHash = passwordHash,
+            DisplayName = request.DisplayName,
+            Email = request.Email,
+            Bio = request.Bio,
+            CreatedAt = DateTime.UtcNow,
+            IsBanned = false,
+            IsOnline = false
+        };
+
+        _unitOfWork.Add(userContract);
+        await _unitOfWork.SaveChangesAsync(cancellationToken);
+
+        return Result.Success(new AdminUserDto(
+            userContract.Id,
+            userContract.Username,
+            userContract.DisplayName,
+            userContract.Email,
+            userContract.Avatar,
+            userContract.CreatedAt,
+            userContract.IsOnline,
+            userContract.LastSeen ?? DateTime.UtcNow,
+            userContract.IsBanned));
+    }
+}

backend/src/Modules/Admin/Application/Admin/Queries/CleanDryRun/CleanDryRunQuery.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
@@ -8,6 +8,7 @@ using Knot.Contracts.Auth.Infrastructure.Persistence;
 using Knot.Contracts.Conversations.Domain;
 using Knot.Contracts.Conversations.Infrastructure.Persistence;
 using Knot.Contracts.Messaging.Application.Abstractions;
+using Knot.Shared.Kernel.Storage;
 using Knot.Contracts.Stories.Infrastructure.Persistence;
 using Knot.Modules.Admin.Application.Admin.DTOs;
 using MediatR;
@@ -23,17 +24,20 @@ internal sealed class CleanDryRunQueryHandler : IQueryHandler<CleanDryRunQuery,
     private readonly IAuthDbContext _authDbContext;
     private readonly IChatsDbContext _chatsDbContext;
     private readonly IStoryCollection _storyCollection;
+    private readonly IFileStorageService _fileStorage;
 
     public CleanDryRunQueryHandler(
         Knot.Contracts.Messaging.Application.Abstractions.IMessageQueryService messageService,
         IAuthDbContext authDbContext,
         IChatsDbContext chatsDbContext,
-        IStoryCollection storyCollection)
+        IStoryCollection storyCollection,
+        IFileStorageService fileStorage)
     {
         _messageService = messageService;
         _authDbContext = authDbContext;
         _chatsDbContext = chatsDbContext;
         _storyCollection = storyCollection;
+        _fileStorage = fileStorage;
     }
 
     public async Task<Result<CleanDryRunResult>> Handle(CleanDryRunQuery request, CancellationToken ct)
@@ -46,25 +50,42 @@ internal sealed class CleanDryRunQueryHandler : IQueryHandler<CleanDryRunQuery,
             var orphanedMediaCount = orphanedMessages.Count(m => m.MediaUrl != null);
             var orphanedMessageCount = orphanedMessages.Count;
 
-            var validIds = new HashSet<string>();
+            var allMessages = await _messageService.GetAllMessagesAsync(ct);
-            foreach (var msg in orphanedMessages.Where(m => m.MediaUrl != null))
+            var keptMessages = allMessages
-            {
+                .Where(m => !orphanedMessages.Any(om => om.Id == m.Id) && !m.IsDeleted)
-                var parts = msg.MediaUrl.Split('/');
+                .ToList();
-                var fileId = parts.LastOrDefault();
+            var allUsers = await _authDbContext.Users.ToListAsync(ct);
-                if (!string.IsNullOrEmpty(fileId))
-                {
-                    validIds.Add(fileId);
-                }
-            }
-
             var stories = await _storyCollection.GetAllAsync(ct);
+
+            var validUrls = new HashSet<string>();
+
+            var activeMessageUrls = keptMessages.Where(m => m.Media != null).SelectMany(m => m.Media!).Select(x => x.Url).Where(u => !string.IsNullOrEmpty(u));
+            var activeChatUrls = _chatsDbContext.Chats.Select(c => c.Avatar).Where(u => !string.IsNullOrEmpty(u));
+            var activeUserUrls = allUsers.Select(u => u.Avatar).Where(u => !string.IsNullOrEmpty(u));
+            var activeStoryUrls = stories.Select(s => s.MediaUrl).Where(u => !string.IsNullOrEmpty(u));
+
+            foreach (var u in activeMessageUrls) validUrls.Add(u!);
+            foreach (var u in activeChatUrls) validUrls.Add(u!);
+            foreach (var u in activeUserUrls) validUrls.Add(u!);
+            foreach (var u in activeStoryUrls) validUrls.Add(u!);
+
+            var validFileIds = validUrls
+                .Where(u => u.Contains("/api/files/"))
+                .Select(u => u.Split('/').Last())
+                .ToHashSet();
+
+            var allMinioFiles = await _fileStorage.ListFilesAsync();
+            long orphanedFileSize = allMinioFiles
+                .Where(f => !validFileIds.Contains(f.FileId))
+                .Sum(f => f.Size);
+
             var expiredStoriesCount = stories.Count(s => s.ExpiresAt.HasValue && s.ExpiresAt.Value < DateTime.UtcNow);
             var expiredStoriesSize = stories.Where(s => s.ExpiresAt.HasValue && s.ExpiresAt.Value < DateTime.UtcNow).Sum(s => s.MediaUrl?.Length ?? 0);
 
             return Result.Success(new CleanDryRunResult(
                 orphanedMessageCount,
                 orphanedMediaCount,
-                0,
+                orphanedFileSize,
                 expiredStoriesCount,
                 expiredStoriesSize
             ));

backend/src/Modules/Admin/Application/Admin/Queries/GetDashboardStats/GetDashboardStatsQuery.cs

@@ -1,8 +1,8 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Knot.Contracts.Admin.Abstractions;
-using Knot.Contracts.Settings.Abstractions;
 using Knot.Modules.Admin.Application.Admin.DTOs;
+using Knot.Shared.Kernel.Services;
 using MediatR;
 
 namespace Knot.Modules.Admin.Application.Admin.Queries;

backend/src/Modules/Admin/Application/Admin/Queries/GetUserDetails/GetUserDetailsQuery.cs

@@ -1,11 +1,9 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using Knot.Contracts.Admin.Abstractions;
 using Knot.Contracts.Auth.Domain;
-using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Contracts.Conversations.Abstractions;
 using Knot.Contracts.Messaging.Application.Abstractions;
 using Knot.Modules.Admin.Application.Admin.DTOs;
 using MediatR;
@@ -18,12 +16,12 @@ internal sealed class GetUserDetailsQueryHandler : IQueryHandler<GetUserDetailsQ
 {
     private readonly IUserRepository _userRepository;
     private readonly Knot.Contracts.Messaging.Application.Abstractions.IUserStatsService _statsService;
-    private readonly Knot.Contracts.Conversations.Application.Abstractions.IUserStatusService _statusService;
+    private readonly IUserStatusService _statusService;
 
     public GetUserDetailsQueryHandler(
         IUserRepository userRepository,
         Knot.Contracts.Messaging.Application.Abstractions.IUserStatsService statsService,
-        Knot.Contracts.Conversations.Application.Abstractions.IUserStatusService statusService)
+        IUserStatusService statusService)
     {
         _userRepository = userRepository;
         _statsService = statsService;

backend/src/Modules/Admin/Application/Admin/Queries/SearchUsers/SearchUsersQuery.cs

@@ -5,7 +5,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Knot.Contracts.Admin.Abstractions;
 using Knot.Contracts.Auth.Domain;
-using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Contracts.Conversations.Abstractions;
 using Knot.Contracts.Messaging.Application.Abstractions;
 using Knot.Modules.Admin.Application.Admin.DTOs;
 using MediatR;
@@ -18,12 +18,12 @@ internal sealed class SearchUsersQueryHandler : IQueryHandler<SearchUsersQuery,
 {
     private readonly IUserRepository _userRepository;
     private readonly Knot.Contracts.Messaging.Application.Abstractions.IUserStatsService _statsService;
-    private readonly Knot.Contracts.Conversations.Application.Abstractions.IUserStatusService _statusService;
+    private readonly IUserStatusService _statusService;
 
     public SearchUsersQueryHandler(
         IUserRepository userRepository,
         Knot.Contracts.Messaging.Application.Abstractions.IUserStatsService statsService,
-        Knot.Contracts.Conversations.Application.Abstractions.IUserStatusService statusService)
+        IUserStatusService statusService)
     {
         _userRepository = userRepository;
         _statsService = statsService;

backend/src/Modules/Admin/Knot.Modules.Admin.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
@@ -18,8 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Carter" Version="10.0.0" />
+    <PackageReference Include="BCrypt.Net-Next" Version="4.1.0" />
-    <PackageReference Include="BCrypt.Net-Next" Version="4.0.3" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.4" />
   </ItemGroup>
 </Project>

backend/src/Modules/Admin/Presentation/Endpoints/AdminEndpoints.cs

@@ -1,7 +1,9 @@
-using Carter;
+using System.Text.Json.Serialization;
+using Knot.Contracts.Conversations.Abstractions;
 using Knot.Contracts.Settings.Application.Abstractions;
 using Knot.Contracts.Settings.Application.DTOs;
 using Knot.Modules.Admin.Application.Admin.Commands;
+using Knot.Modules.Admin.Application.Admin.Commands.CreateUser;
 using Knot.Modules.Admin.Application.Admin.Commands.TestKlipy;
 using Knot.Modules.Admin.Application.Admin.Queries;
 using MediatR;
@@ -10,14 +12,16 @@ using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Routing;
 
-namespace Knot.Host.Presentation.Endpoints;
+namespace Knot.Modules.Admin.Presentation.Endpoints;
 
-public record KlipyTestDto(string ApiKey, string AppName);
+public record KlipyTestDto(
+    [property: JsonPropertyName("apiKey")] string ApiKey,
+    [property: JsonPropertyName("appName")] string AppName);
 public record ResetPasswordRequest(string NewPassword);
 
-public sealed class AdminEndpoints : ICarterModule
+public static class AdminEndpoints
 {
-    public void AddRoutes(IEndpointRouteBuilder app)
+    public static void MapAdminEndpoints(this WebApplication app)
     {
         var group = app.MapGroup("api/admin"); // Middleware handles auth
 
@@ -35,7 +39,16 @@ public sealed class AdminEndpoints : ICarterModule
 
         group.MapPost("settings/test-klipy", async ([FromBody] KlipyTestDto dto, ISender sender, CancellationToken ct) =>
         {
+            Console.WriteLine($"[Admin] TestKlipy received: ApiKey={(string.IsNullOrEmpty(dto.ApiKey) ? "EMPTY" : "present")}, AppName={(string.IsNullOrEmpty(dto.AppName) ? "EMPTY" : dto.AppName)}");
+
+            if (string.IsNullOrEmpty(dto.ApiKey) || string.IsNullOrEmpty(dto.AppName))
+            {
+                Console.WriteLine($"[Admin] TestKlipy: Missing required fields - ApiKey={dto?.ApiKey}, AppName={dto?.AppName}");
+                return Results.BadRequest(new { error = "ApiKey and AppName are required" });
+            }
+
             var result = await sender.Send(new TestKlipyConnectionCommand(dto.ApiKey, dto.AppName), ct);
+            Console.WriteLine($"[Admin] TestKlipy result: IsSuccess={result.IsSuccess}, Error={result.Error?.Description}");
             return result.IsSuccess ? Results.Ok(new { success = true }) : Results.BadRequest(new { error = result.Error.Description });
         });
 
@@ -45,7 +58,13 @@ public sealed class AdminEndpoints : ICarterModule
             return Results.Ok(result.Value);
         });
 
-        group.MapPost("users/{userId:guid}/reset-password", async (Guid userId, [FromBody] ResetPasswordRequest dto, ISender sender, CancellationToken ct) =>
+        group.MapPost("users", async ([FromBody] CreateUserCommand command, ISender sender, CancellationToken ct) =>
+        {
+            var result = await sender.Send(command, ct);
+            return result.IsSuccess ? Results.Created($"/api/admin/users/{result.Value.Id}", result.Value) : Results.BadRequest(new { error = result.Error.Description });
+        });
+
+        group.MapPost("users/{userId:guid}/reset-password", async ([FromRoute] Guid userId, [FromBody] ResetPasswordRequest dto, ISender sender, CancellationToken ct) =>
         {
             var result = await sender.Send(new ResetUserPasswordCommand(userId, dto.NewPassword), ct);
             if (result.IsFailure)
@@ -56,34 +75,51 @@ public sealed class AdminEndpoints : ICarterModule
             return Results.Ok(result.Value);
         });
 
-        group.MapPost("users/{userId:guid}/ban", async (Guid userId, ISender sender, CancellationToken ct) =>
+        group.MapPost("users/{userId:guid}/ban", async ([FromRoute] Guid userId, ISender sender, CancellationToken ct) =>
         {
             var result = await sender.Send(new BanUserCommand(userId), ct);
             return result.IsSuccess ? Results.Ok() : Results.BadRequest(new { error = result.Error.Description });
         });
 
-        group.MapPost("users/{userId:guid}/unban", async (Guid userId, ISender sender, CancellationToken ct) =>
+        group.MapPost("users/{userId:guid}/unban", async ([FromRoute] Guid userId, ISender sender, CancellationToken ct) =>
         {
             var result = await sender.Send(new UnbanUserCommand(userId), ct);
             return result.IsSuccess ? Results.Ok() : Results.BadRequest(new { error = result.Error.Description });
         });
 
-        group.MapGet("users", async (ISender sender, [FromQuery] string query = "", CancellationToken ct = default) =>
+        group.MapGet("users", async (ISender sender, [FromQuery] string? query, CancellationToken ct = default) =>
         {
-            var result = await sender.Send(new SearchUsersQuery(query), ct);
+            // При пустом или отсутствующем query возвращаем всех пользователей
-            if (!result.IsSuccess)
+            var searchQuery = string.IsNullOrWhiteSpace(query) ? "" : query;
+            try
             {
-                return Results.BadRequest(new { error = result.Error.Description });
+                var result = await sender.Send(new SearchUsersQuery(searchQuery), ct);
+                if (!result.IsSuccess)
+                {
+                    Console.WriteLine($"[Admin] SearchUsers error: {result.Error.Code} - {result.Error.Description}");
+                    return Results.BadRequest(new { error = result.Error.Description });
+                }
+                return Results.Ok(result.Value);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[Admin] SearchUsers exception: {ex}");
+                return Results.BadRequest(new { error = ex.Message });
             }
-            return Results.Ok(result.Value);
         });
 
-        group.MapGet("users/{id:guid}", async (Guid id, ISender sender, CancellationToken ct) =>
+        group.MapGet("users/{id:guid}", async ([FromRoute] Guid id, ISender sender, CancellationToken ct) =>
         {
             var result = await sender.Send(new GetUserDetailsQuery(id), ct);
             return result.IsSuccess ? Results.Ok(result.Value) : Results.NotFound("User not found");
         });
 
+        group.MapDelete("users/{userId:guid}", async ([FromRoute] Guid userId, IUserDeleterService userDeleter, CancellationToken ct) =>
+        {
+            var result = await userDeleter.DeleteUserAsync(userId, ct);
+            return result.IsSuccess ? Results.Ok() : Results.BadRequest(new { error = result.Error.Description });
+        });
+
         group.MapGet("clean/dry-run", async (ISender sender, CancellationToken ct) =>
         {
             var result = await sender.Send(new CleanDryRunQuery(), ct);
@@ -95,6 +131,17 @@ public sealed class AdminEndpoints : ICarterModule
             return Results.Ok(result.Value);
         });
 
+        group.MapPost("clean/run", async (ISender sender, CancellationToken ct) =>
+        {
+            var result = await sender.Send(new CleanRunCommand(), ct);
+            if (!result.IsSuccess)
+            {
+                Console.WriteLine($"[Admin] Cleanup Run Error: {result.Error.Description}");
+                return Results.BadRequest(new { error = result.Error.Description });
+            }
+            return Results.Ok(result.Value);
+        });
+
         group.MapGet("timezones", () =>
         {
             // Получаем все системные часовые пояса и формируем удобный для фронтенда формат

backend/src/Modules/Auth/Application/Abstractions/IIdentityDbContext.cs

@@ -0,0 +1,14 @@
+using System.Threading;
+using System.Threading.Tasks;
+using Knot.Modules.Auth.Domain;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+
+namespace Knot.Modules.Auth.Application.Abstractions;
+
+public interface IAuthDbContext
+{
+    DbSet<User> Users { get; }
+    Task<int> SaveChangesAsync(CancellationToken cancellationToken);
+}
+

backend/src/Modules/Auth/Application/Abstractions/IIdentityUnitOfWork.cs

@@ -0,0 +1,11 @@
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Auth.Application.Abstractions;
+
+/// <summary>
+/// Unit of Work специфичный для модуля Identity.
+/// </summary>
+public interface IAuthUnitOfWork : IUnitOfWork
+{
+}
+

backend/src/Modules/Auth/Application/Abstractions/IJwtTokenProvider.cs

@@ -0,0 +1,12 @@
+using Knot.Modules.Auth.Domain;
+
+namespace Knot.Modules.Auth.Application.Abstractions;
+
+public interface IJwtTokenProvider
+{
+    string Generate(User user);
+    string Generate(Guid userId, string username, string displayName, string? avatar);
+    string GenerateRefreshToken();
+    DateTime GetRefreshTokenExpiry();
+}
+

backend/src/Modules/Auth/Application/Auth/DTOs/AuthResponseDto.cs

@@ -0,0 +1,21 @@
+using System;
+
+namespace Knot.Modules.Auth.Application.Auth.DTOs;
+
+public record AuthResponseDto(
+    string Token,
+    AuthUserDto User
+);
+
+public record AuthUserDto(
+    Guid Id,
+    string Username,
+    string DisplayName,
+    string? Email,
+    string? Bio,
+    string? Avatar,
+    DateTime? Birthday,
+    bool IsOnline,
+    DateTime CreatedAt
+);
+

backend/src/Modules/Auth/Application/Users/Auth/AuthResponseDto.cs

@@ -0,0 +1,21 @@
+using System;
+
+namespace Knot.Modules.Auth.Application.Users.Auth;
+
+public record AuthResponseDto(
+    string Token,
+    AuthUserDto User
+);
+
+public record AuthUserDto(
+    Guid Id,
+    string Username,
+    string DisplayName,
+    string? Email,
+    string? Bio,
+    string? Avatar,
+    DateTime? Birthday,
+    bool IsOnline,
+    DateTime CreatedAt
+);
+

backend/src/Modules/Auth/Application/Users/GetMe/GetMe.cs

@@ -1,6 +1,8 @@
-using Knot.Shared.Kernel;
+using System.IdentityModel.Tokens.Jwt;
-using Knot.Contracts.Auth.Domain;
+using System.Security.Claims;
+using Knot.Contracts.Auth.Application.Abstractions;
 using Knot.Contracts.Auth.Application.Auth.DTOs;
+using Knot.Shared.Kernel;
 
 namespace Knot.Modules.Auth.Application.Users.GetMe;
 
@@ -9,10 +11,12 @@ public sealed record GetMeQuery(Guid UserId) : IQuery<AuthResponseDto>;
 internal sealed class GetMeQueryHandler : IQueryHandler<GetMeQuery, AuthResponseDto>
 {
     private readonly IUserRepository _userRepository;
+    private readonly IJwtTokenProvider _tokenProvider;
 
-    public GetMeQueryHandler(IUserRepository userRepository)
+    public GetMeQueryHandler(IUserRepository userRepository, IJwtTokenProvider tokenProvider)
     {
         _userRepository = userRepository;
+        _tokenProvider = tokenProvider;
     }
 
     public async Task<Result<AuthResponseDto>> Handle(GetMeQuery request, CancellationToken cancellationToken)
@@ -23,13 +27,23 @@ internal sealed class GetMeQueryHandler : IQueryHandler<GetMeQuery, AuthResponse
             return Result.Failure<AuthResponseDto>(AuthErrors.UserNotFound);
         }
 
+        // Check if access token needs to be refreshed (less than 1 hour remaining)
+        string? newAccessToken = null;
+
+        // We can't directly check the current token's expiry here, but we can 
+        // always issue a new token if the user is authenticated
+        // For now, let's issue a new token on every request (simplified approach)
+        // A better approach would be to parse the incoming token and check expiry
+        newAccessToken = _tokenProvider.Generate(user);
+
         var response = new AuthResponseDto
         {
-            AccessToken = string.Empty,
+            AccessToken = newAccessToken,
             RefreshToken = string.Empty,
             UserId = user.Id,
             Username = user.Username,
-            DisplayName = user.DisplayName
+            DisplayName = user.DisplayName,
+            Avatar = user.Avatar
         };
 
         return Result.Success(response);

backend/src/Modules/Auth/Application/Users/GetUsersExistenceHandler.cs

@@ -0,0 +1,31 @@
+using Knot.Shared.Kernel;
+using Knot.Contracts.Auth.Application.Abstractions;
+using Knot.Contracts.Auth.Domain;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Knot.Modules.Auth.Application.Users;
+
+internal sealed class GetUsersExistenceQueryHandler : IQueryHandler<GetUsersExistenceQuery, List<Guid>>
+{
+    private readonly IAuthDbContext _context;
+
+    public GetUsersExistenceQueryHandler(IAuthDbContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<Result<List<Guid>>> Handle(GetUsersExistenceQuery request, CancellationToken cancellationToken)
+    {
+        var existingIds = await _context.Set<Knot.Modules.Auth.Domain.User>()
+            .Where(u => request.UserIds.Contains(u.Id))
+            .Select(u => u.Id)
+            .ToListAsync(cancellationToken);
+
+        return Result.Success(existingIds);
+    }
+}

backend/src/Modules/Auth/Application/Users/Login/LoginUserCommandHandler.cs

@@ -1,14 +1,10 @@
 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;
 
-/// <summary>
-/// ������� ��� ����� ������������. ���������� AuthResponseDto.
-/// </summary>
 public sealed record LoginUserCommand(string Username, string Password) : ICommand<AuthResponseDto>;
 
 public sealed class LoginUserCommandHandler : ICommandHandler<LoginUserCommand, AuthResponseDto>
@@ -32,14 +28,21 @@ public sealed class LoginUserCommandHandler : ICommandHandler<LoginUserCommand,
         }
 
         string token = _tokenProvider.Generate(user.Id, user.Username, user.DisplayName, user.Avatar);
+        string refreshToken = _tokenProvider.GenerateRefreshToken();
+        DateTime refreshExpiry = _tokenProvider.GetRefreshTokenExpiry();
+
+        // Save refresh token to database
+        user.SetRefreshToken(refreshToken, refreshExpiry);
+        await _userRepository.UpdateAsync(user, cancellationToken);
 
         return Result.Success(new AuthResponseDto
         {
             AccessToken = token,
-            RefreshToken = string.Empty,
+            RefreshToken = refreshToken,
             UserId = user.Id,
             Username = user.Username,
             DisplayName = user.DisplayName
         });
     }
 }
+

backend/src/Modules/Auth/Application/Users/RefreshToken/RefreshTokenCommand.cs

@@ -0,0 +1,7 @@
+using Knot.Contracts.Auth.Application.Auth.DTOs;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Auth.Application.Users.RefreshToken;
+
+public record RefreshTokenCommand(string RefreshToken) : ICommand<AuthResponseDto>;

backend/src/Modules/Auth/Application/Users/RefreshToken/RefreshTokenCommandHandler.cs

@@ -0,0 +1,65 @@
+using Knot.Contracts.Auth.Application.Abstractions;
+using Knot.Contracts.Auth.Application.Auth.DTOs;
+using Knot.Contracts.Auth.Domain;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Auth.Application.Users.RefreshToken;
+
+internal sealed class RefreshTokenCommandHandler : ICommandHandler<RefreshTokenCommand, AuthResponseDto>
+{
+    private readonly IUserRepository _userRepository;
+    private readonly IJwtTokenProvider _tokenProvider;
+
+    public RefreshTokenCommandHandler(
+        IUserRepository userRepository,
+        IJwtTokenProvider tokenProvider)
+    {
+        _userRepository = userRepository;
+        _tokenProvider = tokenProvider;
+    }
+
+    public async Task<Result<AuthResponseDto>> Handle(RefreshTokenCommand request, CancellationToken cancellationToken)
+    {
+        if (string.IsNullOrWhiteSpace(request.RefreshToken))
+        {
+            return Result.Failure<AuthResponseDto>(
+                new Error("Auth.InvalidRefreshToken", "Refresh token is required"));
+        }
+
+        var user = await _userRepository.GetByRefreshTokenAsync(request.RefreshToken, cancellationToken);
+        if (user == null)
+        {
+            return Result.Failure<AuthResponseDto>(
+                new Error("Auth.InvalidRefreshToken", "Invalid or expired refresh token"));
+        }
+
+        // Check if refresh token has expired
+        if (user.RefreshTokenExpiry.HasValue && user.RefreshTokenExpiry.Value < DateTime.UtcNow)
+        {
+            // Clear expired refresh token
+            user.SetRefreshToken(null, null);
+            await _userRepository.UpdateAsync(user, cancellationToken);
+            
+            return Result.Failure<AuthResponseDto>(
+                new Error("Auth.RefreshTokenExpired", "Refresh token has expired. Please login again."));
+        }
+
+        var newAccessToken = _tokenProvider.Generate(user.Id, user.Username, user.DisplayName, user.Avatar);
+
+        var newRefreshToken = _tokenProvider.GenerateRefreshToken();
+        var newRefreshExpiry = _tokenProvider.GetRefreshTokenExpiry();
+        user.SetRefreshToken(newRefreshToken, newRefreshExpiry);
+        await _userRepository.UpdateAsync(user, cancellationToken);
+
+        return Result.Success(new AuthResponseDto
+        {
+            AccessToken = newAccessToken,
+            RefreshToken = newRefreshToken,
+            UserId = user.Id,
+            Username = user.Username,
+            DisplayName = user.DisplayName,
+            Avatar = user.Avatar
+        });
+    }
+}

backend/src/Modules/Auth/Application/Users/Register/RegisterUserCommandHandler.cs

@@ -1,17 +1,13 @@
-using Knot.Contracts.Auth.Domain;
+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>
-/// Êîìàíäà äëÿ ðåãèñòðàöèè íîâîãî ïîëüçîâàòåëÿ.
-/// </summary>
 public sealed record RegisterUserCommand(
     string Username,
     string Password,
@@ -19,9 +15,6 @@ public sealed record RegisterUserCommand(
     string? Email,
     string? Bio) : ICommand<AuthResponseDto>;
 
-/// <summary>
-/// Îáðàáîò÷èê êîìàíäû ðåãèñòðàöèè.
-/// </summary>
 internal sealed class RegisterUserCommandHandler : ICommandHandler<RegisterUserCommand, AuthResponseDto>
 {
     private readonly IUserRepository _userRepository;
@@ -48,16 +41,13 @@ internal sealed class RegisterUserCommandHandler : ICommandHandler<RegisterUserC
             return Result.Failure<AuthResponseDto>(AuthErrors.IdentityRegistrationDisabled);
         }
 
-        // 1. Ïðîâåðêà óíèêàëüíîñòè username
         if (!await _userRepository.IsUsernameUniqueAsync(request.Username, cancellationToken))
         {
             return Result.Failure<AuthResponseDto>(AuthErrors.IdentityUsernameNotUnique);
         }
 
-        // 2. Õåøèðîâàíèå ïàðîëÿ
         string passwordHash = BCrypt.Net.BCrypt.HashPassword(request.Password);
 
-        // 3. Ñîçäàíèå ñóùíîñòè
         var user = User.Create(
             request.Username,
             passwordHash,
@@ -65,21 +55,33 @@ internal sealed class RegisterUserCommandHandler : ICommandHandler<RegisterUserC
             request.Email,
             request.Bio);
 
-        // 4. Ñîõðàíåíèå - èñïîëüçóåì ìåòîä ñ Domain User
+        var repoImpl = _userRepository as Infrastructure.Persistence.UserRepository;
-        var repoWithDomainUserAdd = _userRepository as Infrastructure.Persistence.UserRepository;
+        repoImpl?.Add(user);
-        repoWithDomainUserAdd?.Add(user);
 
         await _unitOfWork.SaveChangesAsync(cancellationToken);
 
-        string token = _tokenProvider.Generate(user.Id, user.Username, user.DisplayName, user.Avatar);
+        // Get the saved user as contract
+        var userContract = await _userRepository.GetByUsernameAsync(request.Username, cancellationToken);
+        if (userContract == null)
+        {
+            return Result.Failure<AuthResponseDto>(AuthErrors.IdentityRegistrationFailed);
+        }
+
+        string token = _tokenProvider.Generate(userContract.Id, userContract.Username, userContract.DisplayName, userContract.Avatar);
+        string refreshToken = _tokenProvider.GenerateRefreshToken();
+        DateTime refreshExpiry = _tokenProvider.GetRefreshTokenExpiry();
+
+        userContract.SetRefreshToken(refreshToken, refreshExpiry);
+        await _userRepository.UpdateAsync(userContract, cancellationToken);
 
         return Result.Success(new AuthResponseDto
         {
             AccessToken = token,
-            RefreshToken = string.Empty,
+            RefreshToken = refreshToken,
-            UserId = user.Id,
+            UserId = userContract.Id,
-            Username = user.Username,
+            Username = userContract.Username,
-            DisplayName = user.DisplayName
+            DisplayName = userContract.DisplayName
         });
     }
 }
+

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>();
 

backend/src/Modules/Auth/Domain/AuthErrors.cs

@@ -0,0 +1,15 @@
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Auth.Domain;
+
+public static class AuthErrors
+{
+    public static readonly Error FriendsNotFound = new Error("Friends.NotFound", "Friendship not found");
+    public static readonly Error FriendsSelf = new Error("Friends.Self", "Cannot add yourself");
+    public static readonly Error FriendsExists = new Error("Friends.Exists", "Friendship already exists");
+    public static readonly Error UserNotFound = new Error("User.NotFound", "User not found");
+    public static readonly Error IdentityInvalidCredentials = new Error("Identity.InvalidCredentials", "Неверное имя пользователя или пароль.");
+    public static readonly Error IdentityRegistrationDisabled = new Error("Identity.RegistrationDisabled", "Registration is disabled by the administrator.");
+    public static readonly Error IdentityUsernameNotUnique = new Error("Identity.UsernameNotUnique", "Это имя пользователя уже занято.");
+}
+

backend/src/Modules/Auth/Domain/User.cs

@@ -26,10 +26,17 @@ public sealed class User : AggregateRoot<Guid>
     public bool IsBanned { get; private set; }
     public string? PhoneNumber { get; private set; }
     public string? RefreshToken { get; private set; }
+    public DateTime? RefreshTokenExpiry { get; private set; }
     public DateTime? BannedUntil { get; private set; }
 
-    public void Ban() => IsBanned = true;
+    public void Ban() {
-    public void Unban() => IsBanned = false;
+        IsBanned = true;
+        RaiseDomainEvent(new UserBannedDomainEvent(Id, true));
+    }
+    public void Unban() {
+        IsBanned = false;
+        RaiseDomainEvent(new UserBannedDomainEvent(Id, false));
+    }
 
     public void SetOnline(bool isOnline, DateTime? lastSeen = null)
     {
@@ -42,9 +49,10 @@ public sealed class User : AggregateRoot<Guid>
         PhoneNumber = phoneNumber;
     }
 
-    public void SetRefreshToken(string? refreshToken)
+    public void SetRefreshToken(string? refreshToken, DateTime? expiry = null)
     {
         RefreshToken = refreshToken;
+        RefreshTokenExpiry = expiry;
     }
 
     public void SetBannedUntil(DateTime? bannedUntil)
@@ -66,10 +74,15 @@ public sealed class User : AggregateRoot<Guid>
         Username = contract.Username;
         DisplayName = contract.DisplayName;
         PhoneNumber = contract.PhoneNumber;
+        Bio = contract.Bio;
+        Avatar = contract.Avatar;
+        Birthday = contract.Birthday;
         IsBanned = contract.IsBanned;
         BannedUntil = contract.BannedUntil;
         SetOnline(contract.IsOnline, contract.LastSeen);
         UserDomain = contract.Domain;
+        RefreshToken = contract.RefreshToken;
+        RefreshTokenExpiry = contract.RefreshTokenExpiry;
     }
 
     private User(Guid id, string username, string passwordHash, string displayName, string? email, string? bio = null)
@@ -172,7 +185,9 @@ public sealed class User : AggregateRoot<Guid>
             IsOnline = IsOnline,
             IsExternal = IsExternal,
             Domain = _domain,
-            LastSeen = LastSeen
+            LastSeen = LastSeen,
+            RefreshToken = RefreshToken,
+            RefreshTokenExpiry = RefreshTokenExpiry
         };
     }
 }

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;

backend/src/Modules/Auth/Infrastructure/Authentication/JwtTokenProvider.cs

@@ -50,6 +50,12 @@ internal sealed class JwtTokenProvider : IJwtTokenProvider
         return Convert.ToBase64String(randomBytes);
     }
 
+    public DateTime GetRefreshTokenExpiry()
+    {
+        var expiryInDays = int.Parse(_configuration["Jwt:RefreshExpiryInDays"] ?? "30");
+        return DateTime.UtcNow.AddDays(expiryInDays);
+    }
+
     public string Generate(Guid userId, string username, string displayName, string? avatar)
     {
         var claims = new Claim[]

backend/src/Modules/Auth/Infrastructure/Persistence/UserRepository.cs

@@ -65,6 +65,7 @@ internal sealed class UserRepository : IUserRepository
         {
             domainUser.UpdateFromContract(user);
             _context.Users.Update(domainUser);
+            await _context.SaveChangesAsync(cancellationToken);
         }
     }
 

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;

backend/src/Modules/Auth/Knot.Modules.Auth.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
@@ -15,7 +15,6 @@
 
   <ItemGroup>
     <PackageReference Include="BCrypt.Net-Next" Version="4.1.0" />
-    <PackageReference Include="Carter" Version="10.0.0" />
     <PackageReference Include="MediatR" Version="12.0.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.4" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="10.0.4" />

backend/src/Modules/Auth/Migrations/20260407181656_AddUserInfoFields.Designer.cs

@@ -0,0 +1,106 @@
+// <auto-generated />
+using System;
+using Knot.Modules.Auth.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace Knot.Modules.Auth.Migrations
+{
+    [DbContext(typeof(AuthDbContext))]
+    [Migration("20260407181656_AddUserInfoFields")]
+    partial class AddUserInfoFields
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasDefaultSchema("identity")
+                .HasAnnotation("ProductVersion", "10.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("Knot.Modules.Auth.Domain.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Avatar")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("BannedUntil")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Bio")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("Birthday")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DisplayName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Domain")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Email")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("HideStatus")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("HideStoryViews")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsBanned")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsExternal")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsOnline")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime?>("LastSeen")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("PasswordHash")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("text");
+
+                    b.Property<string>("RefreshToken")
+                        .HasColumnType("text");
+
+                    b.Property<string>("UserDomain")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Username")
+                        .IsUnique();
+
+                    b.ToTable("Users", "identity");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

backend/src/Modules/Auth/Migrations/20260407181656_AddUserInfoFields.cs

@@ -0,0 +1,37 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Knot.Modules.Auth.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddUserInfoFields : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql(@"
+                DO $$ 
+                BEGIN 
+                    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='identity' AND table_name='Users' AND column_name='BannedUntil') THEN
+                        ALTER TABLE identity.""Users"" ADD ""BannedUntil"" timestamp with time zone;
+                    END IF;
+
+                    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='identity' AND table_name='Users' AND column_name='PhoneNumber') THEN
+                        ALTER TABLE identity.""Users"" ADD ""PhoneNumber"" text;
+                    END IF;
+
+                    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema='identity' AND table_name='Users' AND column_name='RefreshToken') THEN
+                        ALTER TABLE identity.""Users"" ADD ""RefreshToken"" text;
+                    END IF;
+                END $$;");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(name: "BannedUntil", schema: "identity", table: "Users");
+            migrationBuilder.DropColumn(name: "PhoneNumber", schema: "identity", table: "Users");
+            migrationBuilder.DropColumn(name: "RefreshToken", schema: "identity", table: "Users");
+        }
+    }
+}

backend/src/Modules/Auth/Migrations/20270328000000_AddUserUserDomainField.Designer.cs

@@ -0,0 +1,104 @@
+// <auto-generated />
+using System;
+using Knot.Modules.Auth.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace Knot.Modules.Auth.Migrations
+{
+    [DbContext(typeof(AuthDbContext))]
+    [Migration("20270328000000_AddUserUserDomainField")]
+    partial class AddUserUserDomainField
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasDefaultSchema("identity")
+                .HasAnnotation("ProductVersion", "10.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("Knot.Modules.Auth.Domain.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Avatar")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("BannedUntil")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("Birthday")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Bio")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DisplayName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Domain")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Email")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("HideStatus")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("HideStoryViews")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsBanned")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsExternal")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsOnline")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime?>("LastSeen")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("PasswordHash")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("text");
+
+                    b.Property<string>("RefreshToken")
+                        .HasColumnType("text");
+
+                    b.Property<string>("UserDomain")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Username")
+                        .IsUnique();
+
+                    b.ToTable("Users", "identity");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

backend/src/Modules/Auth/Migrations/20270328000000_AddUserUserDomainField.cs

@@ -0,0 +1,31 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Knot.Modules.Auth.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddUserUserDomainField : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "UserDomain",
+                schema: "identity",
+                table: "Users",
+                type: "text",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "UserDomain",
+                schema: "identity",
+                table: "Users");
+        }
+    }
+}

backend/src/Modules/Auth/Migrations/20270419220000_AddRefreshTokenExpiry.Designer.cs

@@ -0,0 +1,100 @@
+using System;
+using Knot.Modules.Auth.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace Knot.Modules.Auth.Migrations
+{
+    /// <inheritdoc />
+    [DbContext(typeof(AuthDbContext))]
+    [Migration("20270419220000_AddRefreshTokenExpiry")]
+    partial class AddRefreshTokenExpiry
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.0-rc.1.25451.105")
+                .HasAnnotation("Relational:DefaultSchema", "identity");
+
+            modelBuilder.Entity("Knot.Modules.Auth.Domain.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Avatar")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("BannedUntil")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Bio")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("Birthday")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DisplayName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Domain")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Email")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("HideStatus")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("HideStoryViews")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsBanned")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsExternal")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsOnline")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime?>("LastSeen")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("PasswordHash")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("text");
+
+                    b.Property<string>("RefreshToken")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("RefreshTokenExpiry")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Username")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Username")
+                        .IsUnique();
+
+                    b.ToTable("Users", "identity");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

backend/src/Modules/Auth/Migrations/20270419220000_AddRefreshTokenExpiry.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Knot.Modules.Auth.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddRefreshTokenExpiry : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<DateTime>(
+                name: "RefreshTokenExpiry",
+                schema: "identity",
+                table: "Users",
+                type: "timestamp with time zone",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "RefreshTokenExpiry",
+                schema: "identity",
+                table: "Users");
+        }
+    }
+}

backend/src/Modules/Auth/Migrations/AuthDbContextModelSnapshot.cs

@@ -1,4 +1,4 @@
-// <auto-generated />
+// <auto-generated />
 using System;
 using Knot.Modules.Auth.Infrastructure.Persistence;
 using Microsoft.EntityFrameworkCore;
@@ -23,7 +23,7 @@ namespace Knot.Modules.Auth.Migrations
 
             NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
 
-            modelBuilder.Entity("Knot.Contracts.Auth.Domain.User", b =>
+            modelBuilder.Entity("Knot.Modules.Auth.Domain.User", b =>
                 {
                     b.Property<Guid>("Id")
                         .ValueGeneratedOnAdd()
@@ -32,6 +32,9 @@ namespace Knot.Modules.Auth.Migrations
                     b.Property<string>("Avatar")
                         .HasColumnType("text");
 
+                    b.Property<DateTime?>("BannedUntil")
+                        .HasColumnType("timestamp with time zone");
+
                     b.Property<string>("Bio")
                         .HasColumnType("text");
 
@@ -57,10 +60,10 @@ namespace Knot.Modules.Auth.Migrations
                     b.Property<bool>("HideStoryViews")
                         .HasColumnType("boolean");
 
-                    b.Property<bool>("IsExternal")
+                    b.Property<bool>("IsBanned")
                         .HasColumnType("boolean");
 
-                    b.Property<bool>("IsBanned")
+                    b.Property<bool>("IsExternal")
                         .HasColumnType("boolean");
 
                     b.Property<bool>("IsOnline")
@@ -73,6 +76,15 @@ namespace Knot.Modules.Auth.Migrations
                         .IsRequired()
                         .HasColumnType("text");
 
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("text");
+
+                    b.Property<string>("RefreshToken")
+                        .HasColumnType("text");
+
+                    b.Property<string>("UserDomain")
+                        .HasColumnType("text");
+
                     b.Property<string>("Username")
                         .IsRequired()
                         .HasMaxLength(50)

backend/src/Modules/Auth/Presentation/Endpoints/AuthEndpoints.cs

@@ -1,19 +1,19 @@
-using Carter;
-using Knot.Shared.Kernel;
-using Knot.Modules.Auth.Application.Users.Login;
-using Knot.Modules.Auth.Application.Users.Register;
 using Knot.Modules.Auth.Application.Users.GetMe;
+using Knot.Modules.Auth.Application.Users.Login;
+using Knot.Modules.Auth.Application.Users.RefreshToken;
+using Knot.Modules.Auth.Application.Users.Register;
+using Knot.Shared.Kernel;
 using MediatR;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Routing;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Routing;
 
 namespace Knot.Modules.Auth.Presentation.Endpoints;
 
-public sealed class AuthEndpoints : ICarterModule
+public static class AuthEndpoints
 {
-    public void AddRoutes(IEndpointRouteBuilder app)
+    public static void MapAuthEndpoints(this WebApplication app)
     {
         var group = app.MapGroup("api/auth");
 
@@ -29,6 +29,12 @@ public sealed class AuthEndpoints : ICarterModule
             return result.IsSuccess ? Results.Ok(result.Value) : Results.Unauthorized();
         });
 
+        group.MapPost("refresh", async ([FromBody] RefreshTokenCommand command, ISender sender, CancellationToken ct) =>
+        {
+            var result = await sender.Send(command, ct);
+            return result.IsSuccess ? Results.Ok(result.Value) : Results.Unauthorized();
+        });
+
         group.MapGet("me", async (ISender sender, IUserContext userContext, CancellationToken ct) =>
         {
             var result = await sender.Send(new GetMeQuery(userContext.UserId), ct);

backend/src/Modules/Conversations/Application/Abstractions/IChatsUnitOfWork.cs

@@ -1,11 +0,0 @@
-using Knot.Shared.Kernel;
-
-namespace Knot.Modules.Conversations.Application.Abstractions;
-
-/// <summary>
-/// Unit of Work специфичный для модуля Chats.
-/// </summary>
-public interface IChatsUnitOfWork : IUnitOfWork
-{
-}
-