refactor: extract remaining Telegram handlers to platform-neutral contracts

- Extract CreateSessionHandler, ListSessionsHandler, DeleteSessionHandler,
  ExportCalendarHandler, HandleRescheduleTimeInputHandler,
  HandleRescheduleVoteHandler to GmRelay.Shared
- Add IPlatformMessenger methods: SendScheduleAsync, UpdateScheduleAsync,
  SendGroupMessageAsync with actions, CreateThreadAsync, DeleteThreadAsync
- Rewrite Telegram Bot wrappers as thin adapters delegating to shared handlers
- Rewrite DiscordRescheduleVoteHandler to use shared HandleRescheduleVoteHandler
- Update UpdateRouter with explicit type aliases for ambiguous handler names
- Add contract and source-inspection tests for extracted handlers
- Bump version 3.1.1 → 3.2.0

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 3.0.1
+  VERSION: 3.2.0
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>3.0.1</Version>
+    <Version>3.2.0</Version>
     <TargetFramework>net10.0</TargetFramework>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>

README.md

@@ -85,8 +85,10 @@ TELEGRAM_BOT_TOKEN=ваш_токен_здесь
 # Токен Discord application bot
 DISCORD_BOT_TOKEN=ваш_discord_токен_здесь
 
-# Client ID Discord application (используется для slash-команд)
-DISCORD_BOT_CLIENT_ID=ваш_discord_client_id_здесь
+# Discord OAuth (для Web Dashboard)
+DISCORD_CLIENT_ID=ваш_discord_client_id_здесь
+DISCORD_CLIENT_SECRET=ваш_discord_client_secret_здесь
+DISCORD_REDIRECT_URI=https://your-domain.example/auth/discord/callback
 
 # Имя бота без @ (для Telegram Login Widget)
 TELEGRAM_BOT_USERNAME=ваше_имя_бота_здесь
@@ -119,7 +121,7 @@ docker compose up -d
 1. Напишите боту `/start`.
 2. Создайте группу через `/newgroup`.
 3. Откройте Mini App или Web Dashboard для расширенного управления.
-4. Для Discord пригласите application bot на сервер с правами `bot` и `applications.commands`. Скопируйте `DISCORD_BOT_TOKEN` и `DISCORD_BOT_CLIENT_ID` в `.env`.
+4. Для Discord пригласите application bot на сервер с правами `bot` и `applications.commands`. Скопируйте `DISCORD_BOT_TOKEN` в `.env`; `DISCORD_CLIENT_ID`, `DISCORD_CLIENT_SECRET` и `DISCORD_REDIRECT_URI` нужны только для входа в Web Dashboard через Discord.
 5. Перезапустите Docker Compose (`docker compose up -d`), а затем в Discord создайте сессию через `/newsession` или опубликуйте расписание через `/listsessions`; игроки записываются и выходят кнопками в опубликованном сообщении.
 
 ## 💾 Backup и восстановление

compose.yaml

@@ -49,7 +49,7 @@ services:
         crond -f
 
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:3.0.1
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:3.2.0
     restart: always
     depends_on:
       db:
@@ -67,7 +67,7 @@ services:
       retries: 3
 
   discord:
-    image: git.codeanddice.ru/toutsu/gmrelay-discord-bot:3.0.1
+    image: git.codeanddice.ru/toutsu/gmrelay-discord-bot:3.2.0
     restart: always
     depends_on:
       db:
@@ -84,7 +84,7 @@ services:
       retries: 3
 
   web:
-    image: git.codeanddice.ru/toutsu/gmrelay-web:3.0.1
+    image: git.codeanddice.ru/toutsu/gmrelay-web:3.2.0
     restart: always
     depends_on:
       db:

src/GmRelay.Bot/Features/Sessions/CreateSession/CancelSessionHandler.cs

@@ -42,12 +42,13 @@ public sealed class CancelSessionHandler(
                        FROM group_managers gm
                        JOIN players p ON p.id = gm.player_id
                        WHERE gm.group_id = s.group_id
-                         AND p.telegram_id = @TelegramUserId
+                         AND p.platform = 'Telegram'
+                         AND p.external_user_id = @ExternalUserId
                    ) AS CanManage
             FROM sessions s
             WHERE s.id = @SessionId
             """,
-            new { command.SessionId, command.TelegramUserId }, transaction);
+            new { command.SessionId, ExternalUserId = command.TelegramUserId.ToString() }, transaction);
 
         if (session == null)
         {
@@ -89,7 +90,7 @@ public sealed class CancelSessionHandler(
 
         var directRecipients = (await connection.QueryAsync<DirectNotificationRecipient>(
             """
-            SELECT p.telegram_id AS TelegramId,
+            SELECT p.external_user_id::BIGINT AS TelegramId,
                    p.display_name AS DisplayName
             FROM session_participants sp
             JOIN players p ON sp.player_id = p.id

src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs

@@ -1,292 +1,178 @@
 using Dapper;
 using GmRelay.Shared.Domain;
-using GmRelay.Shared.Rendering;
+using GmRelay.Shared.Platform;
+using GmRelay.Bot.Infrastructure.Telegram;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types;
-using GmRelay.Bot.Infrastructure.Telegram;
 
 namespace GmRelay.Bot.Features.Sessions.CreateSession;
 
-internal sealed record SessionCreationGroupAccessDto(Guid GroupId, bool CanManage);
-
 public sealed class CreateSessionHandler(
+    GmRelay.Shared.Features.Sessions.CreateSession.CreateSessionHandler sharedHandler,
     NpgsqlDataSource dataSource,
-    ITelegramBotClient botClient,
+    IPlatformMessenger messenger,
     ILogger<CreateSessionHandler> logger)
 {
-    public async Task HandleAsync(Message message, CancellationToken cancellationToken)
+    public async Task HandleAsync(Message message, CancellationToken ct)
     {
         var parseResult = NewSessionCommandParser.Parse(message.Text ?? message.Caption, DateTimeOffset.UtcNow);
 
         foreach (var timeInput in parseResult.PastTimeInputs)
         {
-            await botClient.SendMessage(
-                message.Chat.Id,
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, null),
                 $"⚠️ Предупреждение: дата {timeInput} находится в прошлом и будет пропущена.",
-                cancellationToken: cancellationToken);
+                ct);
         }
 
         foreach (var timeInput in parseResult.InvalidTimeInputs)
         {
-            await botClient.SendMessage(
-                message.Chat.Id,
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, null),
                 $"⚠️ Предупреждение: некорректный формат времени '{timeInput}'. Пропущено.",
-                cancellationToken: cancellationToken);
+                ct);
         }
 
         foreach (var seatLimitInput in parseResult.InvalidSeatLimitInputs)
         {
-            await botClient.SendMessage(
-                message.Chat.Id,
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, null),
                 $"⚠️ Предупреждение: некорректный лимит мест '{seatLimitInput}'. Укажите целое число больше 0.",
-                cancellationToken: cancellationToken);
+                ct);
         }
 
         foreach (var recurringInput in parseResult.InvalidRecurringInputs)
         {
-            await botClient.SendMessage(
-                message.Chat.Id,
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, null),
                 $"⚠️ Предупреждение: некорректный повтор расписания '{recurringInput}'. Укажите число игр 1-52 и шаг 1-365 дней.",
-                cancellationToken: cancellationToken);
+                ct);
         }
 
         if (!parseResult.IsValid)
         {
-            await botClient.SendMessage(
-                chatId: message.Chat.Id,
-                text: "❌ Не удалось распознать формат. Пожалуйста, используйте шаблон:\n\n/newsession\nНазвание: My Game\nВремя: 15.05.2026 19:30\nВремя: 22.05.2026 19:30\nМест: 4\nСсылка: https://link\nКартинка: https://cover\n\nДля повтора можно указать одну дату и строки:\nИгр: 4\nИнтервал: 7",
-                cancellationToken: cancellationToken);
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, null),
+                """
+                ❌ Не удалось распознать формат. Пожалуйста, используйте шаблон:
+
+                /newsession
+                Название: My Game
+                Время: 15.05.2026 19:30
+                Время: 22.05.2026 19:30
+                Мест: 4
+                Ссылка: https://link
+                Картинка: https://cover
+
+                Для повтора можно указать одну дату и строки:
+                Игр: 4
+                Интервал: 7
+                """,
+                ct);
             return;
         }
 
-        var title = parseResult.Title!;
-        var link = parseResult.Link!;
         var imageReference = GetBatchImageReference(message, parseResult.ImageUrl);
         var gmId = message.From!.Id;
         var gmName = message.From.FirstName + (string.IsNullOrEmpty(message.From.LastName) ? string.Empty : $" {message.From.LastName}");
         var gmUsername = message.From.Username;
 
-        var chatId = message.Chat.Id;
-        var chatTitle = message.Chat.Title ?? "Private Chat";
+        var topicDestination = TelegramTopicRouting.ResolveNewScheduleDestination(
+            message.Chat.IsForum,
+            message.MessageThreadId);
+        var topicCreatedByBot = topicDestination.TopicCreatedByBot;
+        var messageThreadId = topicDestination.MessageThreadId;
 
-        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
-        await using var transaction = await connection.BeginTransactionAsync(cancellationToken);
-
-        try
+        if (topicDestination.ShouldCreateForumTopic)
         {
-            await connection.ExecuteAsync(
-                """
-                INSERT INTO players (telegram_id, display_name, telegram_username, platform, external_user_id, external_username)
-                VALUES (@TgId, @Name, @Username, 'Telegram', @TgId::TEXT, @Username)
-                ON CONFLICT (telegram_id) DO UPDATE
-                SET display_name = EXCLUDED.display_name,
-                    telegram_username = EXCLUDED.telegram_username,
-                    platform = COALESCE(players.platform, 'Telegram'),
-                    external_user_id = COALESCE(players.external_user_id, EXCLUDED.telegram_id::TEXT),
-                    external_username = COALESCE(players.external_username, EXCLUDED.telegram_username);
-                """,
-                new { TgId = gmId, Name = gmName, Username = gmUsername },
-                transaction);
-
-            var existingGroup = await connection.QuerySingleOrDefaultAsync<SessionCreationGroupAccessDto>(
-                """
-                SELECT g.id AS GroupId,
-                       EXISTS (
-                           SELECT 1
-                           FROM group_managers gm
-                           JOIN players p ON p.id = gm.player_id
-                           WHERE gm.group_id = g.id
-                             AND COALESCE(p.external_user_id, p.telegram_id::TEXT) = @GmId::TEXT
-                       ) AS CanManage
-                FROM game_groups g
-                WHERE COALESCE(g.external_group_id, g.telegram_chat_id::TEXT) = @ChatId::TEXT
-                """,
-                new { ChatId = chatId, GmId = gmId },
-                transaction);
-
-            Guid groupId;
-            if (existingGroup is null)
-            {
-                groupId = await connection.ExecuteScalarAsync<Guid>(
-                    """
-                    INSERT INTO game_groups (telegram_chat_id, name, gm_telegram_id, platform, external_group_id)
-                    VALUES (@ChatId, @ChatName, @GmId, 'Telegram', @ChatId::TEXT)
-                    RETURNING id;
-                    """,
-                    new { ChatId = chatId, ChatName = chatTitle, GmId = gmId },
-                    transaction);
-
-                await connection.ExecuteAsync(
-                    """
-                    INSERT INTO group_managers (group_id, player_id, role)
-                    SELECT @GroupId, p.id, @OwnerRole
-                    FROM players p
-                    WHERE COALESCE(p.external_user_id, p.telegram_id::TEXT) = @GmId::TEXT
-                    ON CONFLICT (group_id, player_id) DO NOTHING
-                    """,
-                    new { GroupId = groupId, GmId = gmId, OwnerRole = GroupManagerRoleExtensions.OwnerValue },
-                    transaction);
-            }
-            else
-            {
-                if (!existingGroup.CanManage)
-                {
-                    await transaction.RollbackAsync(cancellationToken);
-                    await botClient.SendMessage(
-                        chatId,
-                        "⛔ Только owner или co-GM этой группы может создавать игровые сессии.",
-                        cancellationToken: cancellationToken);
-                    return;
-                }
-
-                groupId = existingGroup.GroupId;
-                await connection.ExecuteAsync(
-                    "UPDATE game_groups SET name = @ChatName WHERE id = @GroupId",
-                    new { ChatName = chatTitle, GroupId = groupId },
-                    transaction);
-            }
-
-            var topicDestination = TelegramTopicRouting.ResolveNewScheduleDestination(
-                message.Chat.IsForum,
-                message.MessageThreadId);
-            var messageThreadId = topicDestination.MessageThreadId;
-            var topicCreatedByBot = topicDestination.TopicCreatedByBot;
-            if (topicDestination.ShouldCreateForumTopic)
-            {
-                try
-                {
-                    var topic = await botClient.CreateForumTopic(
-                        chatId: chatId,
-                        name: $"🎲 Игры: {title}",
-                        cancellationToken: cancellationToken);
-                    messageThreadId = topic.MessageThreadId;
-                }
-                catch (Telegram.Bot.Exceptions.ApiRequestException ex)
-                    when (TelegramTopicRouting.IsMissingForumTopicRightsError(ex.Message))
-                {
-                    await transaction.RollbackAsync(cancellationToken);
-                    await botClient.SendMessage(
-                        chatId,
-                        TelegramTopicRouting.MissingForumTopicRightsMessage,
-                        cancellationToken: cancellationToken);
-                    return;
-                }
-            }
-
-            var batchId = Guid.NewGuid();
-            var sessions = new List<SessionBatchDto>();
-
-            foreach (var scheduledAt in parseResult.ScheduledTimes.OrderBy(value => value))
-            {
-                var sessionId = await connection.ExecuteScalarAsync<Guid>(
-                    """
-                    INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id, topic_created_by_bot, max_players)
-                    VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @ThreadId, @TopicCreatedByBot, @MaxPlayers)
-                    RETURNING id;
-                    """,
-                    new
-                    {
-                        BatchId = batchId,
-                        GroupId = groupId,
-                        Title = title,
-                        Link = link,
-                        ScheduledAt = scheduledAt,
-                        ThreadId = messageThreadId,
-                        TopicCreatedByBot = topicCreatedByBot,
-                        MaxPlayers = parseResult.MaxPlayers,
-                        Status = SessionStatus.Planned
-                    },
-                    transaction);
-
-                sessions.Add(new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, parseResult.MaxPlayers, link));
-            }
-
-            await transaction.CommitAsync(cancellationToken);
-            logger.LogInformation("Создан батч {BatchId} с {Count} сессиями в группе {GroupId}", batchId, sessions.Count, groupId);
-
-            var view = SessionBatchViewBuilder.Build(title, sessions, Array.Empty<ParticipantBatchDto>());
-            var renderResult = TelegramSessionBatchRenderer.Render(view);
-
-            Message batchMessage;
-
-            if (imageReference is not null && renderResult.Text.Length <= 1024)
-            {
-                // Картинка + расписание умещаются в одном Telegram-фото с подписью
-                try
-                {
-                    batchMessage = await botClient.SendPhoto(
-                        chatId: chatId,
-                        messageThreadId: messageThreadId,
-                        photo: InputFile.FromString(imageReference),
-                        caption: renderResult.Text,
-                        parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                        replyMarkup: renderResult.Markup,
-                        cancellationToken: cancellationToken);
-                }
-                catch (Exception ex)
-                {
-                    logger.LogWarning(ex, "Не удалось отправить картинку для батча {BatchId}, отправляем текстом", batchId);
-                    batchMessage = await botClient.SendMessage(
-                        chatId: chatId,
-                        messageThreadId: messageThreadId,
-                        text: renderResult.Text,
-                        parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                        replyMarkup: renderResult.Markup,
-                        cancellationToken: cancellationToken);
-                }
-            }
-            else
-            {
-                // Текст слишком длинный для caption — fallback на два сообщения
-                if (imageReference is not null)
-                {
-                    try
-                    {
-                        await botClient.SendPhoto(
-                            chatId: chatId,
-                            messageThreadId: messageThreadId,
-                            photo: InputFile.FromString(imageReference),
-                            caption: $"🎲 {System.Net.WebUtility.HtmlEncode(title)}",
-                            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                            cancellationToken: cancellationToken);
-                    }
-                    catch (Exception ex)
-                    {
-                        logger.LogWarning(ex, "Не удалось отправить картинку для батча {BatchId}", batchId);
-                    }
-                }
-
-                batchMessage = await botClient.SendMessage(
-                    chatId: chatId,
-                    messageThreadId: messageThreadId,
-                    text: renderResult.Text,
-                    parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                    replyMarkup: renderResult.Markup,
-                    cancellationToken: cancellationToken);
-            }
-
-            await connection.ExecuteAsync(
-                "UPDATE sessions SET batch_message_id = @MsgId WHERE batch_id = @BatchId",
-                new { MsgId = batchMessage.MessageId, BatchId = batchId });
-
             try
             {
-                await botClient.DeleteMessage(
-                    chatId: chatId,
-                    messageId: message.MessageId,
-                    cancellationToken: cancellationToken);
+                var topicRef = await messenger.CreateThreadAsync(
+                    TelegramPlatformIds.Group(message.Chat.Id, null),
+                    $"🎲 Игры: {parseResult.Title}",
+                    ct);
+                messageThreadId = int.Parse(topicRef.ExternalThreadId!, System.Globalization.CultureInfo.InvariantCulture);
             }
             catch (Exception ex)
+                when (ex.Message.Contains("not enough rights") ||
+                      ex.Message.Contains("CHAT_ADMIN_REQUIRED") ||
+                      ex.Message.Contains("not an administrator"))
             {
-                logger.LogWarning(ex, "Не удалось удалить исходное сообщение {MessageId} в чате {ChatId}", message.MessageId, chatId);
+                await messenger.SendGroupMessageAsync(
+                    TelegramPlatformIds.Group(message.Chat.Id, null),
+                    TelegramTopicRouting.MissingForumTopicRightsMessage,
+                    ct);
+                return;
             }
         }
+
+        var platformGroup = TelegramPlatformIds.Group(message.Chat.Id, messageThreadId, message.Chat.Title ?? "Private Chat");
+        var platformUser = new PlatformUser(
+            PlatformKind.Telegram,
+            gmId.ToString(System.Globalization.CultureInfo.InvariantCulture),
+            gmName,
+            gmUsername);
+
+        var command = new GmRelay.Shared.Features.Sessions.CreateSession.CreateSessionCommand(
+            platformUser,
+            platformGroup,
+            parseResult.Title!,
+            parseResult.Link!,
+            parseResult.ScheduledTimes,
+            parseResult.MaxPlayers,
+            imageReference);
+
+        GmRelay.Shared.Features.Sessions.CreateSession.CreateSessionResult result;
+        try
+        {
+            result = await sharedHandler.HandleAsync(command, ct);
+        }
+        catch
+        {
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, null),
+                "💥 Произошла ошибка базы данных при создании сессии.",
+                ct);
+            throw;
+        }
+
+        if (!result.Success)
+        {
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, null),
+                result.ErrorMessage!,
+                ct);
+            return;
+        }
+
+        var scheduleMessage = new PlatformScheduleMessage(
+            platformGroup,
+            result.View!,
+            null,
+            imageReference);
+
+        var sentMessageRef = await messenger.SendScheduleAsync(scheduleMessage, ct);
+
+        // Store batch_message_id
+        if (int.TryParse(sentMessageRef.ExternalMessageId, System.Globalization.NumberStyles.Integer, System.Globalization.CultureInfo.InvariantCulture, out var batchMessageId))
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+            await connection.ExecuteAsync(
+                "UPDATE sessions SET batch_message_id = @MsgId WHERE batch_id = @BatchId",
+                new { MsgId = batchMessageId, BatchId = result.BatchId });
+        }
+
+        // Delete original message
+        try
+        {
+            await messenger.DeleteMessageAsync(
+                TelegramPlatformIds.Message(message.Chat.Id, null, message.MessageId),
+                ct);
+        }
         catch (Exception ex)
         {
-            logger.LogError(ex, "Ошибка при создании сессии");
-            await transaction.RollbackAsync(cancellationToken);
-            await botClient.SendMessage(chatId, "💥 Произошла ошибка базы данных при создании сессии.", cancellationToken: cancellationToken);
+            logger.LogWarning(ex, "Не удалось удалить исходное сообщение {MessageId} в чате {ChatId}", message.MessageId, message.Chat.Id);
         }
     }
 

src/GmRelay.Bot/Features/Sessions/CreateSession/PromoteWaitlistedPlayerHandler.cs

@@ -41,13 +41,14 @@ public sealed class PromoteWaitlistedPlayerHandler(
                            FROM group_managers gm
                            JOIN players p ON p.id = gm.player_id
                            WHERE gm.group_id = s.group_id
-                             AND p.telegram_id = @TelegramUserId
+                             AND p.platform = 'Telegram'
+                             AND p.external_user_id = @ExternalUserId
                        ) AS CanManage
                 FROM sessions s
                 WHERE s.id = @SessionId
                 FOR UPDATE
                 """,
-                new { command.SessionId, command.TelegramUserId },
+                new { command.SessionId, ExternalUserId = command.TelegramUserId.ToString() },
                 transaction);
 
             if (session is null)
@@ -150,7 +151,7 @@ public sealed class PromoteWaitlistedPlayerHandler(
                 """
                 SELECT sp.session_id AS SessionId,
                        p.display_name AS DisplayName,
-                       p.telegram_username AS TelegramUsername,
+                       p.external_username AS TelegramUsername,
                        sp.registration_status AS RegistrationStatus
                 FROM session_participants sp
                 JOIN players p ON sp.player_id = p.id

src/GmRelay.Bot/Features/Sessions/ExportCalendar/ExportCalendarHandler.cs

@@ -1,113 +1,25 @@
-using System.Text;
-using Dapper;
-using GmRelay.Bot.Infrastructure.Telegram;
-using GmRelay.Shared.Domain;
 using GmRelay.Shared.Platform;
-using Microsoft.Extensions.Configuration;
-using Npgsql;
 using Telegram.Bot.Types;
 
 namespace GmRelay.Bot.Features.Sessions.ExportCalendar;
 
-internal sealed record CalendarSessionDto(Guid Id, string Title, DateTime ScheduledAt);
-
 public sealed class ExportCalendarHandler(
-    NpgsqlDataSource dataSource,
-    IPlatformMessenger messenger,
-    IConfiguration configuration)
+    GmRelay.Shared.Features.Sessions.ExportCalendar.ExportCalendarHandler sharedHandler)
 {
-    public async Task HandleAsync(Message message, CancellationToken cancellationToken)
+    public Task HandleAsync(Message message, CancellationToken cancellationToken)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+        var command = new GmRelay.Shared.Features.Sessions.ExportCalendar.ExportCalendarCommand(
+            new PlatformGroup(
+                PlatformKind.Telegram,
+                message.Chat.Id.ToString(),
+                message.Chat.Title ?? "Private Chat",
+                message.MessageThreadId?.ToString()),
+            new PlatformUser(
+                PlatformKind.Telegram,
+                message.From?.Id.ToString() ?? string.Empty,
+                message.From?.FirstName ?? string.Empty,
+                message.From?.Username));
 
-        var sessions = await connection.QueryAsync<CalendarSessionDto>(
-            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt"
-            + " FROM sessions s"
-            + " JOIN game_groups g ON s.group_id = g.id"
-            + " WHERE g.telegram_chat_id = @ChatId"
-            + " AND s.status = @Planned"
-            + " AND s.scheduled_at > NOW()"
-            + " ORDER BY s.scheduled_at ASC",
-            new { ChatId = message.Chat.Id, Planned = SessionStatus.Planned });
-
-        var sessionsList = sessions.ToList();
-
-        if (sessionsList.Count == 0)
-        {
-            await messenger.SendGroupMessageAsync(
-                TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId),
-                "📭 У этой группы нет запланированных сессий для экспорта.",
-                cancellationToken);
-            return;
-        }
-
-        var sb = new StringBuilder();
-        sb.AppendLine("BEGIN:VCALENDAR");
-        sb.AppendLine("VERSION:2.0");
-        sb.AppendLine("PRODID:-//GM-Relay//TTRPG Schedule//EN");
-
-        foreach (var s in sessionsList)
-        {
-            var dtStart = s.ScheduledAt.ToString("yyyyMMddTHHmmssZ");
-            var dtEnd = s.ScheduledAt.AddHours(4).ToString("yyyyMMddTHHmmssZ");
-
-            sb.AppendLine("BEGIN:VEVENT");
-            sb.AppendLine($"UID:{s.Id}@gmrelay");
-            sb.AppendLine($"DTSTAMP:{DateTime.UtcNow:yyyyMMddTHHmmssZ}");
-            sb.AppendLine($"DTSTART:{dtStart}");
-            sb.AppendLine($"DTEND:{dtEnd}");
-            sb.AppendLine($"SUMMARY:{s.Title}");
-            sb.AppendLine("END:VEVENT");
-        }
-
-        sb.AppendLine("END:VCALENDAR");
-
-        var bytes = Encoding.UTF8.GetBytes(sb.ToString());
-
-
-        // Create calendar subscription
-        string? subscriptionUrl = null;
-        var baseUrl = configuration["Web:BaseUrl"];
-        var senderId = message.From?.Id;
-        if (!string.IsNullOrWhiteSpace(baseUrl) && senderId.HasValue)
-        {
-            try
-            {
-                var token = Guid.NewGuid().ToString("N");
-                var groupId = await connection.QueryFirstOrDefaultAsync<Guid?>(
-                    @"SELECT id FROM game_groups WHERE telegram_chat_id = @ChatId",
-                    new { ChatId = message.Chat.Id });
-
-                await connection.ExecuteAsync(
-                    @"INSERT INTO calendar_subscriptions (id, token, user_telegram_id, group_id, filter_type, created_at, expires_at)
-                      VALUES (gen_random_uuid(), @token, @userTelegramId, @groupId, @filterType, now(), NULL)",
-                    new { token, userTelegramId = senderId.Value, groupId, filterType = (int)CalendarSubscriptionFilter.SpecificGroup });
-
-                subscriptionUrl = $"{baseUrl.TrimEnd('/')}/calendar/{token}.ics";
-            }
-            catch
-            {
-                // Non-critical: if subscription creation fails, still send the file
-            }
-        }
-
-        var actions = subscriptionUrl is not null
-            ? new[]
-            {
-                new PlatformMessageAction(
-                    "calendar-subscription",
-                    "🔗 Подписаться на календарь",
-                    subscriptionUrl)
-            }
-            : Array.Empty<PlatformMessageAction>();
-
-        await messenger.SendCalendarFileAsync(
-            new PlatformCalendarFile(
-                TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId),
-                "schedule.ics",
-                bytes,
-                "📅 <b>Ваш календарь игр!</b>\nОткройте файл на устройстве, чтобы добавить события в свой календарь.",
-                actions),
-            cancellationToken);
+        return sharedHandler.HandleAsync(command, cancellationToken);
     }
 }

src/GmRelay.Bot/Features/Sessions/ListSessions/DeleteSessionHandler.cs

@@ -1,8 +1,5 @@
-using Dapper;
-using Npgsql;
-using Telegram.Bot;
 using GmRelay.Bot.Infrastructure.Telegram;
-using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 
 namespace GmRelay.Bot.Features.Sessions.ListSessions;
 
@@ -13,138 +10,88 @@ public sealed record DeleteSessionCommand(
     long ChatId,
     int MessageId);
 
-internal sealed record DeleteSessionInfoDto(
-    string Title,
-    Guid BatchId,
-    Guid GroupId,
-    bool CanManage,
-    int? ThreadId,
-    bool TopicCreatedByBot);
-
 public sealed class DeleteSessionHandler(
-    NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    GmRelay.Shared.Features.Sessions.ListSessions.DeleteSessionHandler sharedHandler,
+    GmRelay.Shared.Features.Sessions.ListSessions.ListSessionsHandler listSessionsHandler,
+    IPlatformMessenger messenger,
     ILogger<DeleteSessionHandler> logger)
 {
     public async Task HandleAsync(DeleteSessionCommand command, CancellationToken ct)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-        await using var transaction = await connection.BeginTransactionAsync(ct);
+        var platformUser = new PlatformUser(
+            PlatformKind.Telegram,
+            command.TelegramUserId.ToString(),
+            string.Empty,
+            null);
 
-        // 1. Fetch session and verify group manager.
-        var session = await connection.QuerySingleOrDefaultAsync<DeleteSessionInfoDto>(
-            """
-            SELECT s.title AS Title,
-                   s.batch_id AS BatchId,
-                   s.group_id AS GroupId,
-                   s.thread_id AS ThreadId,
-                   s.topic_created_by_bot AS TopicCreatedByBot,
-                   EXISTS (
-                       SELECT 1
-                       FROM group_managers gm
-                       JOIN players p ON p.id = gm.player_id
-                       WHERE gm.group_id = s.group_id
-                         AND p.telegram_id = @TelegramUserId
-                   ) AS CanManage
-            FROM sessions s
-            WHERE s.id = @SessionId
-            """,
-            new { command.SessionId, command.TelegramUserId }, transaction);
+        var platformGroup = new PlatformGroup(
+            PlatformKind.Telegram,
+            command.ChatId.ToString(),
+            string.Empty);
 
-        if (session == null)
+        var scheduleMessage = TelegramPlatformIds.Message(command.ChatId, null, command.MessageId);
+
+        var sharedCommand = new GmRelay.Shared.Features.Sessions.ListSessions.DeleteSessionCommand(
+            command.SessionId,
+            platformUser,
+            platformGroup,
+            scheduleMessage);
+
+        var result = await sharedHandler.HandleAsync(sharedCommand, ct);
+
+        if (!result.Success)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия не найдена.", cancellationToken: ct);
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.CallbackQueryId, result.ReplyText!, result.ReplyText!.Contains("owner")),
+                ct);
             return;
         }
 
-        if (!session.CanManage)
-        {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только owner или co-GM может удалять сессию.", showAlert: true, cancellationToken: ct);
-            return;
-        }
-
-        // 2. Delete session
-        await connection.ExecuteAsync("DELETE FROM sessions WHERE id = @Id", new { Id = command.SessionId }, transaction);
-
-        var remainingInTopic = session.ThreadId.HasValue
-            ? await connection.ExecuteScalarAsync<int>(
-                """
-                SELECT COUNT(*)
-                FROM sessions
-                WHERE group_id = @GroupId
-                  AND thread_id = @ThreadId
-                """,
-                new { session.GroupId, ThreadId = session.ThreadId.Value },
-                transaction)
-            : 0;
-
-        await transaction.CommitAsync(ct);
-
         // 4. If no sessions are left in a bot-owned forum topic, delete the topic.
-        if (session.ThreadId.HasValue &&
-            TelegramTopicRouting.ShouldDeleteForumTopic(session.TopicCreatedByBot, remainingInTopic))
+        if (result.ThreadId.HasValue &&
+            TelegramTopicRouting.ShouldDeleteForumTopic(result.TopicCreatedByBot, result.RemainingInTopic))
         {
             try
             {
-                await bot.DeleteForumTopic(command.ChatId, session.ThreadId.Value, cancellationToken: ct);
-                logger.LogInformation("Deleted forum topic {ThreadId} for batch {BatchId} as no sessions remained.", session.ThreadId.Value, session.BatchId);
+                await messenger.DeleteThreadAsync(
+                    new PlatformGroup(PlatformKind.Telegram, command.ChatId.ToString(), string.Empty, null, result.ThreadId.Value.ToString(System.Globalization.CultureInfo.InvariantCulture)),
+                    ct);
+                logger.LogInformation("Deleted forum topic {ThreadId} for batch {BatchId} as no sessions remained.", result.ThreadId.Value, result.GroupId);
             }
             catch (Exception ex)
             {
-                logger.LogWarning(ex, "Failed to delete forum topic {ThreadId}", session.ThreadId.Value);
+                logger.LogWarning(ex, "Failed to delete forum topic {ThreadId}", result.ThreadId.Value);
             }
         }
 
-        await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия удалена!", cancellationToken: ct);
+        await messenger.AnswerInteractionAsync(
+            new PlatformInteractionReply(command.CallbackQueryId, result.ReplyText!),
+            ct);
 
-        // 5. Update the /listsessions message (we delete the message or edit it to remove the button)
-        // A simple way is to re-render the list:
-        await using var readConnection = await dataSource.OpenConnectionAsync(ct);
-        var sessions = await readConnection.QueryAsync<SessionListItemDto>(
-            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt, s.status as Status, s.max_players as MaxPlayers,
-                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Active) as PlayerCount,
-                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted) as WaitlistCount,
-                     EXISTS (
-                         SELECT 1
-                         FROM group_managers gm
-                         JOIN players manager_player ON manager_player.id = gm.player_id
-                         WHERE gm.group_id = s.group_id
-                           AND manager_player.telegram_id = @TelegramUserId
-                     ) AS CanManage
-              FROM sessions s
-              JOIN game_groups g ON s.group_id = g.id
-              LEFT JOIN session_participants sp ON s.id = sp.session_id
-              WHERE g.telegram_chat_id = @ChatId AND s.status != @Cancelled AND s.scheduled_at > NOW()
-              GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players, s.group_id
-              ORDER BY s.scheduled_at ASC",
-            new
-            {
-                ChatId = command.ChatId,
-                command.TelegramUserId,
-                Cancelled = SessionStatus.Cancelled,
-                Active = ParticipantRegistrationStatus.Active,
-                Waitlisted = ParticipantRegistrationStatus.Waitlisted
-            });
+        // 5. Update the /listsessions message
+        var listCommand = new GmRelay.Shared.Features.Sessions.ListSessions.ListSessionsCommand(platformGroup, platformUser);
+        var listResult = await listSessionsHandler.HandleAsync(listCommand, ct);
 
-        var sessionsList = sessions.ToList();
-
-        if (sessionsList.Count == 0)
+        if (listResult.Sessions.Count == 0)
         {
-            try { await bot.EditMessageText(command.ChatId, command.MessageId, "📭 В этой группе нет предстоящих игр.", cancellationToken: ct); } catch { }
+            try
+            {
+                await messenger.UpdateGroupMessageAsync(
+                    scheduleMessage,
+                    "📭 В этой группе нет предстоящих игр.",
+                    [],
+                    ct);
+            }
+            catch { }
             return;
         }
 
-        var renderResult = SessionListMessageRenderer.Render(sessionsList);
+        var text = SessionListMessageRenderer.RenderText(listResult.Sessions);
+        var actions = listResult.CanManage ? SessionListMessageRenderer.RenderActions(listResult.Sessions) : [];
 
         try
         {
-            await bot.EditMessageText(
-                command.ChatId,
-                command.MessageId,
-                renderResult.Text,
-                parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                replyMarkup: renderResult.Markup,
-                cancellationToken: ct);
+            await messenger.UpdateGroupMessageAsync(scheduleMessage, text, actions, ct);
         }
         catch (Exception ex)
         {

src/GmRelay.Bot/Features/Sessions/ListSessions/ListSessionsHandler.cs

@@ -1,114 +1,37 @@
-using Dapper;
-using GmRelay.Shared.Domain;
-using Npgsql;
-using Telegram.Bot;
+using GmRelay.Shared.Platform;
 using Telegram.Bot.Types;
-using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Features.Sessions.ListSessions;
 
-internal sealed record SessionListItemDto(Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers, int PlayerCount, int WaitlistCount, bool CanManage);
-
-internal static class SessionListMessageRenderer
-{
-    public static (string Text, InlineKeyboardMarkup? Markup) Render(IReadOnlyList<SessionListItemDto> sessions)
-    {
-        var text = "📅 <b>Ближайшие игры:</b>\n\n";
-        foreach (var session in sessions)
-        {
-            var seats = session.MaxPlayers.HasValue
-                ? $"{session.PlayerCount}/{session.MaxPlayers.Value}"
-                : session.PlayerCount.ToString(System.Globalization.CultureInfo.InvariantCulture);
-            var waitlist = session.WaitlistCount > 0 ? $", ожидание: {session.WaitlistCount}" : string.Empty;
-            text += $"🔹 <b>{session.ScheduledAt.FormatMoscow()}</b> — {System.Net.WebUtility.HtmlEncode(session.Title)} (Места: {seats}{waitlist})\n";
-        }
-
-        var canManage = sessions.Count > 0 && sessions.First().CanManage;
-        if (!canManage)
-        {
-            return (text, null);
-        }
-
-        var buttons = new List<InlineKeyboardButton[]>();
-        foreach (var session in sessions)
-        {
-            var dateTitle = session.ScheduledAt.FormatMoscowShort();
-            buttons.Add(
-            [
-                InlineKeyboardButton.WithCallbackData($"❌ {dateTitle}", $"cancel_session:{session.Id}"),
-                InlineKeyboardButton.WithCallbackData($"⏰ {dateTitle}", $"reschedule_session:{session.Id}")
-            ]);
-
-            if (SessionCapacityRules.CanPromoteWaitlistedPlayer(session.MaxPlayers, session.PlayerCount, session.WaitlistCount))
-            {
-                buttons.Add(
-                [
-                    InlineKeyboardButton.WithCallbackData($"⬆️ Из ожидания {dateTitle}", $"promote_waitlist:{session.Id}")
-                ]);
-            }
-
-            buttons.Add(
-            [
-                InlineKeyboardButton.WithCallbackData($"🗑 Удалить {dateTitle}", $"delete_session:{session.Id}")
-            ]);
-        }
-
-        return (text, new InlineKeyboardMarkup(buttons));
-    }
-}
-
 public sealed class ListSessionsHandler(
-    NpgsqlDataSource dataSource,
-    ITelegramBotClient botClient)
+    GmRelay.Shared.Features.Sessions.ListSessions.ListSessionsHandler sharedHandler,
+    IPlatformMessenger messenger)
 {
     public async Task HandleAsync(Message message, CancellationToken cancellationToken)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+        var command = new GmRelay.Shared.Features.Sessions.ListSessions.ListSessionsCommand(
+            new PlatformGroup(
+                PlatformKind.Telegram,
+                message.Chat.Id.ToString(),
+                message.Chat.Title ?? "Private Chat",
+                message.MessageThreadId?.ToString()),
+            new PlatformUser(
+                PlatformKind.Telegram,
+                message.From?.Id.ToString() ?? string.Empty,
+                message.From?.FirstName ?? string.Empty,
+                message.From?.Username));
 
-        var sessions = await connection.QueryAsync<SessionListItemDto>(
-            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt, s.status as Status, s.max_players as MaxPlayers,
-                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Active) as PlayerCount,
-                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted) as WaitlistCount,
-                     EXISTS (
-                         SELECT 1
-                         FROM group_managers gm
-                         JOIN players manager_player ON manager_player.id = gm.player_id
-                         WHERE gm.group_id = s.group_id
-                           AND manager_player.telegram_id = @TelegramUserId
-                     ) AS CanManage
-              FROM sessions s
-              JOIN game_groups g ON s.group_id = g.id
-              LEFT JOIN session_participants sp ON s.id = sp.session_id
-              WHERE g.telegram_chat_id = @ChatId AND s.status != @Cancelled AND s.scheduled_at > NOW()
-              GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players, s.group_id
-              ORDER BY s.scheduled_at ASC",
-            new
-            {
-                ChatId = message.Chat.Id,
-                TelegramUserId = message.From?.Id,
-                Cancelled = SessionStatus.Cancelled,
-                Active = ParticipantRegistrationStatus.Active,
-                Waitlisted = ParticipantRegistrationStatus.Waitlisted
-            });
+        var result = await sharedHandler.HandleAsync(command, cancellationToken);
 
-        var sessionsList = sessions.ToList();
-
-        if (sessionsList.Count == 0)
+        if (result.Sessions.Count == 0)
         {
-            await botClient.SendMessage(
-                chatId: message.Chat.Id,
-                text: "📭 В этой группе нет предстоящих игр.",
-                cancellationToken: cancellationToken);
+            await messenger.SendGroupMessageAsync(command.Group, "📭 В этой группе нет предстоящих игр.", cancellationToken);
             return;
         }
 
-        var renderResult = SessionListMessageRenderer.Render(sessionsList);
+        var text = SessionListMessageRenderer.RenderText(result.Sessions);
+        var actions = result.CanManage ? SessionListMessageRenderer.RenderActions(result.Sessions) : [];
 
-        await botClient.SendMessage(
-            chatId: message.Chat.Id,
-            text: renderResult.Text,
-            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-            replyMarkup: renderResult.Markup,
-            cancellationToken: cancellationToken);
+        await messenger.SendGroupMessageAsync(command.Group, text, actions, cancellationToken);
     }
 }

src/GmRelay.Bot/Features/Sessions/ListSessions/SessionListMessageRenderer.cs

@@ -0,0 +1,63 @@
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Features.Sessions.ListSessions;
+
+namespace GmRelay.Bot.Features.Sessions.ListSessions;
+
+internal static class SessionListMessageRenderer
+{
+    public static string RenderText(IReadOnlyList<SessionListItemDto> sessions)
+    {
+        var text = "📅 <b>Ближайшие игры:</b>\n\n";
+        foreach (var session in sessions)
+        {
+            var seats = session.MaxPlayers.HasValue
+                ? $"{session.PlayerCount}/{session.MaxPlayers.Value}"
+                : session.PlayerCount.ToString(System.Globalization.CultureInfo.InvariantCulture);
+            var waitlist = session.WaitlistCount > 0 ? $", ожидание: {session.WaitlistCount}" : string.Empty;
+            text += $"🔹 <b>{session.ScheduledAt.FormatMoscow()}</b> — {System.Net.WebUtility.HtmlEncode(session.Title)} (Места: {seats}{waitlist})\n";
+        }
+
+        return text;
+    }
+
+    public static IReadOnlyList<PlatformMessageAction> RenderActions(IReadOnlyList<SessionListItemDto> sessions)
+    {
+        if (sessions.Count == 0 || !sessions.First().CanManage)
+        {
+            return [];
+        }
+
+        var actions = new List<PlatformMessageAction>();
+
+        foreach (var session in sessions)
+        {
+            var dateTitle = session.ScheduledAt.FormatMoscowShort();
+
+            actions.Add(new PlatformMessageAction(
+                $"cancel_session:{session.Id}",
+                $"❌ {dateTitle}",
+                $"cancel_session:{session.Id}"));
+
+            actions.Add(new PlatformMessageAction(
+                $"reschedule_session:{session.Id}",
+                $"⏰ {dateTitle}",
+                $"reschedule_session:{session.Id}"));
+
+            if (SessionCapacityRules.CanPromoteWaitlistedPlayer(session.MaxPlayers, session.PlayerCount, session.WaitlistCount))
+            {
+                actions.Add(new PlatformMessageAction(
+                    $"promote_waitlist:{session.Id}",
+                    $"⬆️ Из ожидания {dateTitle}",
+                    $"promote_waitlist:{session.Id}"));
+            }
+
+            actions.Add(new PlatformMessageAction(
+                $"delete_session:{session.Id}",
+                $"🗑 Удалить {dateTitle}",
+                $"delete_session:{session.Id}"));
+        }
+
+        return actions;
+    }
+}

src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs

@@ -12,241 +12,156 @@ using GmRelay.Bot.Infrastructure.Telegram;
 
 namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
-// ── DTOs ─────────────────────────────────────────────────────────────
-
-internal sealed record AwaitingProposalDto(
-    Guid Id, Guid SessionId, string Title, DateTime CurrentScheduledAt,
-    Guid BatchId, int? BatchMessageId, long TelegramChatId, int? ThreadId, string NotificationMode);
-
-// ── Handler ──────────────────────────────────────────────────────────
-
 /// <summary>
-/// Handles text input from the GM who has an AwaitingTime proposal.
-/// Parses reschedule options with a voting deadline, creates a voting message,
-/// and tags all participants.
-/// If no participants are registered, reschedules immediately.
+/// Telegram adapter for reschedule time input.
+/// Delegates core logic to the shared handler, then performs Telegram-specific
+/// message sending, DM notifications, vote_message_id storage, and cleanup.
 /// </summary>
 public sealed class HandleRescheduleTimeInputHandler(
+    GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputHandler sharedHandler,
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
     IPlatformMessenger messenger,
     DirectSessionNotificationSender directSender,
     ILogger<HandleRescheduleTimeInputHandler> logger)
 {
-    /// <summary>
-    /// Attempts to handle a text message as reschedule time input.
-    /// Returns true if it was handled (i.e. user had an AwaitingTime proposal).
-    /// </summary>
     public async Task<bool> TryHandleAsync(Message message, CancellationToken ct)
     {
         if (message.From is null || string.IsNullOrWhiteSpace(message.Text))
             return false;
 
-        var gmTelegramId = message.From.Id;
-        var chatId = message.Chat.Id;
-        var text = message.Text.Trim();
+        var command = new GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputCommand(
+            new PlatformUser(
+                PlatformKind.Telegram,
+                message.From.Id.ToString(),
+                message.From.FirstName + (string.IsNullOrEmpty(message.From.LastName) ? "" : $" {message.From.LastName}"),
+                message.From.Username),
+            TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId, message.Chat.Title),
+            message.Text.Trim());
 
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-        // 1. Check if this GM has an AwaitingTime proposal in this chat
-        var proposal = await connection.QuerySingleOrDefaultAsync<AwaitingProposalDto>(
-            """
-            SELECT rp.id AS Id, rp.session_id AS SessionId, s.title AS Title, s.scheduled_at AS CurrentScheduledAt,
-                   s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
-                   g.telegram_chat_id AS TelegramChatId,
-                   s.thread_id AS ThreadId,
-                   s.notification_mode AS NotificationMode
-            FROM reschedule_proposals rp
-            JOIN sessions s ON s.id = rp.session_id
-            JOIN game_groups g ON g.id = s.group_id
-            WHERE rp.proposed_by = @GmId
-              AND rp.status = 'AwaitingTime'
-              AND g.telegram_chat_id = @ChatId
-              AND EXISTS (
-                  SELECT 1
-                  FROM group_managers gm
-                  JOIN players manager_player ON manager_player.id = gm.player_id
-                  WHERE gm.group_id = s.group_id
-                    AND manager_player.telegram_id = @GmId
-              )
-            ORDER BY rp.created_at DESC
-            LIMIT 1
-            """,
-            new { GmId = gmTelegramId, ChatId = chatId });
-
-        if (proposal is null)
+        var result = await sharedHandler.HandleAsync(command, ct);
+        if (!result.Handled)
             return false;
 
-        // 2. Parse voting input
-        if (!RescheduleVotingInput.TryParse(text, DateTimeOffset.UtcNow, out var votingInput, out var parseError))
+        if (!string.IsNullOrEmpty(result.ReplyText) && !result.IsRescheduledImmediately)
         {
             await messenger.SendGroupMessageAsync(
-                TelegramPlatformIds.Group(chatId, proposal.ThreadId),
-                $"⚠️ {parseError}\n\nИспользуйте формат:\n<code>25.04.2026 19:30\n26.04.2026 18:00\nДедлайн: 25.04.2026 12:00</code>",
+                command.Group,
+                $"""⚠️ {result.ReplyText}\n\nИспользуйте формат:\n<code>25.04.2026 19:30\n26.04.2026 18:00\nДедлайн: 25.04.2026 12:00</code>""",
                 ct);
             return true;
         }
 
-        // 3. Load participants (non-GM) signed up for this session
-        var participants = (await connection.QueryAsync<VoteParticipantDto>(
-            """
-            SELECT p.id AS PlayerId,
-                   p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   p.telegram_id AS TelegramId
-            FROM session_participants sp
-            JOIN players p ON p.id = sp.player_id
-            WHERE sp.session_id = @SessionId
-              AND sp.is_gm = false
-              AND sp.registration_status = @Active
-            """,
-            new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active })).ToList();
-
-        // 4. If no participants — reschedule immediately
-        if (participants.Count == 0)
+        if (result.IsRescheduledImmediately)
         {
-            await RescheduleImmediately(connection, proposal, votingInput.Options[0], chatId, ct);
-            await TryDeleteMessage(chatId, message.MessageId, ct);
+            if (result.UpdatedView is not null && result.BatchMessageId.HasValue)
+            {
+                await TryUpdateBatchMessage(
+                    command.Group,
+                    result.UpdatedView,
+                    TelegramPlatformIds.Message(message.Chat.Id, message.MessageThreadId, result.BatchMessageId.Value),
+                    ct);
+            }
+
+            await messenger.SendGroupMessageAsync(command.Group, result.ReplyText!, ct);
+            await TryDeleteMessage(message.Chat.Id, message.MessageId, ct);
             return true;
         }
 
-        // 5. Create voting message
-        await using var transaction = await connection.BeginTransactionAsync(ct);
-        var options = votingInput.Options
-            .Select((proposedAt, index) => new RescheduleOptionDto(
-                Guid.NewGuid(),
-                index + 1,
-                proposedAt))
-            .ToList();
-
-        await connection.ExecuteAsync(
-            """
-            UPDATE reschedule_proposals
-            SET voting_deadline_at = @Deadline, status = 'Voting', vote_chat_id = @ChatId
-            WHERE id = @Id
-            """,
-            new { votingInput.Deadline, ChatId = chatId, Id = proposal.Id },
-            transaction);
-
-        foreach (var option in options)
-        {
-            await connection.ExecuteAsync(
-                """
-                INSERT INTO reschedule_options (id, proposal_id, proposed_at, display_order)
-                VALUES (@OptionId, @ProposalId, @ProposedAt, @DisplayOrder)
-                """,
-                new
-                {
-                    option.OptionId,
-                    ProposalId = proposal.Id,
-                    option.ProposedAt,
-                    option.DisplayOrder
-                },
-                transaction);
-        }
-
-        await transaction.CommitAsync(ct);
-
+        // Voting mode
         var voteText = BuildVotingMessage(
-            proposal.Title,
-            proposal.CurrentScheduledAt,
-            votingInput.Deadline,
-            options,
-            participants,
+            result.Title!,
+            result.CurrentScheduledAt,
+            result.VotingDeadlineAt!.Value,
+            result.Options,
+            result.Participants,
             []);
-        var keyboard = BuildVotingKeyboard(options);
+
+        var keyboard = BuildVotingKeyboard(result.Options);
 
         var voteMsg = await bot.SendMessage(
-            chatId: chatId,
-            messageThreadId: proposal.ThreadId,
+            chatId: message.Chat.Id,
+            messageThreadId: message.MessageThreadId,
             text: voteText,
             parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
             replyMarkup: keyboard,
             cancellationToken: ct);
 
-        var mode = SessionNotificationModeExtensions.FromDatabaseValue(proposal.NotificationMode);
+        var mode = await GetNotificationModeAsync(result.ProposalId!.Value, ct);
         if (mode.ShouldSendDirectMessages())
         {
             var optionsText = string.Join(
                 "\n",
-                options.Select(option => $"{option.DisplayOrder}. <b>{option.ProposedAt.FormatMoscow()}</b> (МСК)"));
+                result.Options.Select(option => $"{option.DisplayOrder}. <b>{option.ProposedAt.FormatMoscow()}</b> (МСК)"));
             var directText = $"""
                 🔄 <b>Голосование за перенос сессии</b>
 
-                📌 <b>{System.Net.WebUtility.HtmlEncode(proposal.Title)}</b>
-                📅 Текущее время: <b>{proposal.CurrentScheduledAt.FormatMoscow()}</b> (МСК)
+                📌 <b>{System.Net.WebUtility.HtmlEncode(result.Title)}</b>
+                📅 Текущее время: <b>{result.CurrentScheduledAt.FormatMoscow()}</b> (МСК)
                 🗳 Варианты:
                 {optionsText}
 
-                ⏳ Дедлайн: <b>{votingInput.Deadline.FormatMoscow()}</b> (МСК)
+                ⏳ Дедлайн: <b>{result.VotingDeadlineAt.Value.FormatMoscow()}</b> (МСК)
 
                 Проголосуйте кнопкой в групповом сообщении.
                 """;
 
             await directSender.SendAsync(
-                participants.Select(p => new DirectNotificationRecipient(
+                result.Participants.Select(p => new DirectNotificationRecipient(
                     p.TelegramId,
                     p.DisplayName)),
                 directText,
                 "reschedule-vote",
-                proposal.SessionId,
+                result.ProposalId.Value,
                 ct);
         }
 
-        // Store vote message ID
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
         await connection.ExecuteAsync(
             "UPDATE reschedule_proposals SET vote_message_id = @MsgId WHERE id = @Id",
-            new { MsgId = voteMsg.MessageId, Id = proposal.Id });
+            new { MsgId = voteMsg.MessageId, Id = result.ProposalId.Value });
 
         logger.LogInformation(
             "Reschedule voting started for session {SessionId}, proposal {ProposalId}, options {OptionCount}, deadline {Deadline}",
-            proposal.SessionId,
-            proposal.Id,
-            options.Count,
-            votingInput.Deadline);
-
-        // Delete GM's time input message
-        await TryDeleteMessage(chatId, message.MessageId, ct);
+            result.ProposalId.Value,
+            result.ProposalId.Value,
+            result.Options.Count,
+            result.VotingDeadlineAt.Value);
 
+        await TryDeleteMessage(message.Chat.Id, message.MessageId, ct);
         return true;
     }
 
-    private async Task RescheduleImmediately(
-        NpgsqlConnection connection, AwaitingProposalDto proposal,
-        DateTimeOffset newTime, long chatId, CancellationToken ct)
+    private async Task<SessionNotificationMode> GetNotificationModeAsync(Guid proposalId, CancellationToken ct)
     {
-        await using var transaction = await connection.BeginTransactionAsync(ct);
-
-        await connection.ExecuteAsync(
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        var raw = await connection.QuerySingleOrDefaultAsync<string?>(
             """
-            UPDATE sessions
-            SET scheduled_at = @NewTime,
-                status = @Status,
-                confirmation_message_id = NULL,
-                confirmation_sent_at = NULL,
-                one_hour_reminder_processed_at = NULL,
-                updated_at = now()
-            WHERE id = @SessionId
+            SELECT s.notification_mode
+            FROM sessions s
+            JOIN reschedule_proposals rp ON rp.session_id = s.id
+            WHERE rp.id = @Id
             """,
-            new { NewTime = newTime, proposal.SessionId, Status = SessionStatus.Planned },
-            transaction);
+            new { Id = proposalId });
+        return SessionNotificationModeExtensions.FromDatabaseValue(raw ?? string.Empty);
+    }
 
-        await connection.ExecuteAsync(
-            "UPDATE reschedule_proposals SET proposed_at = @NewTime, status = 'Approved' WHERE id = @Id",
-            new { NewTime = newTime, Id = proposal.Id },
-            transaction);
-
-        await transaction.CommitAsync(ct);
-
-        await messenger.SendGroupMessageAsync(
-            TelegramPlatformIds.Group(chatId, proposal.ThreadId),
-            $"✅ Сессия «{proposal.Title}» перенесена!\n\n📅 Новое время: <b>{newTime.ToOffset(TimeSpan.FromHours(3)).ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"))}</b> (МСК)\n\n<i>Участников нет — голосование не требуется.</i>",
-            ct);
-
-        // Re-render batch message with updated time
-        await TryUpdateBatchMessage(proposal, ct);
-
-        logger.LogInformation("Session {SessionId} rescheduled immediately (no participants)", proposal.SessionId);
+    private async Task TryUpdateBatchMessage(
+        PlatformGroup group,
+        SessionBatchViewModel view,
+        PlatformMessageRef scheduleMessage,
+        CancellationToken ct)
+    {
+        try
+        {
+            await messenger.UpdateScheduleAsync(
+                new PlatformScheduleMessage(group, view, scheduleMessage),
+                ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update batch message after immediate reschedule");
+        }
     }
 
     internal static string BuildVotingMessage(
@@ -268,7 +183,7 @@ public sealed class HandleRescheduleTimeInputHandler(
 
         var lines = new List<string>
         {
-            $"🔄 <b>Перенос сессии «{System.Net.WebUtility.HtmlEncode(title)}»</b>",
+            $"""🔄 <b>Перенос сессии «{System.Net.WebUtility.HtmlEncode(title)}»</b>""",
             "",
             $"📅 Текущее время: <b>{currentTime.FormatMoscow()}</b> (МСК)",
             $"⏳ Дедлайн: <b>{deadline.FormatMoscow()}</b> (МСК)",
@@ -349,52 +264,6 @@ public sealed class HandleRescheduleTimeInputHandler(
             "dd.MM HH:mm",
             System.Globalization.CultureInfo.InvariantCulture);
 
-    private async Task TryUpdateBatchMessage(AwaitingProposalDto proposal, CancellationToken ct)
-    {
-        try
-        {
-            await using var conn = await dataSource.OpenConnectionAsync(ct);
-
-            var batchSessions = (await conn.QueryAsync<SessionBatchDto>(
-                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers, join_link AS JoinLink FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
-                new { proposal.BatchId })).ToList();
-
-            var batchParticipants = (await conn.QueryAsync<ParticipantBatchDto>(
-                """
-                SELECT sp.session_id AS SessionId,
-                       p.display_name AS DisplayName,
-                       p.telegram_username AS TelegramUsername,
-                       sp.registration_status AS RegistrationStatus
-                FROM session_participants sp
-                JOIN players p ON sp.player_id = p.id
-                JOIN sessions s ON sp.session_id = s.id
-                WHERE s.batch_id = @BatchId AND sp.is_gm = false
-                ORDER BY sp.registration_status ASC, sp.created_at ASC, sp.responded_at ASC, p.created_at ASC
-                """,
-                new { proposal.BatchId })).ToList();
-
-            if (proposal.BatchMessageId.HasValue)
-            {
-                var view = SessionBatchViewBuilder.Build(proposal.Title, batchSessions, batchParticipants);
-
-                await messenger.UpdateScheduleAsync(
-                    new PlatformScheduleMessage(
-                        TelegramPlatformIds.Group(proposal.TelegramChatId, proposal.ThreadId),
-                        view,
-                        TelegramPlatformIds.Message(proposal.TelegramChatId, proposal.ThreadId, proposal.BatchMessageId.Value)),
-                    ct);
-            }
-            else
-            {
-                logger.LogWarning("No batch_message_id stored for session {SessionId}, cannot edit batch message in-place", proposal.SessionId);
-            }
-        }
-        catch (Exception ex)
-        {
-            logger.LogWarning(ex, "Failed to update batch message after immediate reschedule for session {SessionId}", proposal.SessionId);
-        }
-    }
-
     private async Task TryDeleteMessage(long chatId, int messageId, CancellationToken ct)
     {
         try

src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleVoteHandler.cs

@@ -1,8 +1,7 @@
-using Dapper;
+using GmRelay.Bot.Infrastructure.Telegram;
 using GmRelay.Shared.Domain;
 using GmRelay.Shared.Features.Sessions.RescheduleSession;
 using GmRelay.Shared.Platform;
-using Npgsql;
 using Telegram.Bot;
 
 namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
@@ -15,130 +14,49 @@ public sealed record HandleRescheduleVoteCommand(
     int MessageId);
 
 public sealed class HandleRescheduleVoteHandler(
-    NpgsqlDataSource dataSource,
+    GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleVoteHandler sharedHandler,
     ITelegramBotClient bot,
     IPlatformMessenger messenger,
     ILogger<HandleRescheduleVoteHandler> logger)
 {
     public async Task HandleAsync(HandleRescheduleVoteCommand command, CancellationToken ct)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-        await using var transaction = await connection.BeginTransactionAsync(ct);
+        var platformUser = new PlatformUser(
+            PlatformKind.Telegram,
+            command.TelegramUserId.ToString(),
+            string.Empty,
+            null);
 
-        var proposal = await connection.QuerySingleOrDefaultAsync<VoteProposalDto>(
-            """
-            SELECT rp.id AS Id,
-                   rp.session_id AS SessionId,
-                   rp.voting_deadline_at AS VotingDeadlineAt,
-                   s.title AS Title,
-                   s.scheduled_at AS CurrentScheduledAt
-            FROM reschedule_options ro
-            JOIN reschedule_proposals rp ON rp.id = ro.proposal_id
-            JOIN sessions s ON s.id = rp.session_id
-            WHERE ro.id = @OptionId AND rp.status = 'Voting'
-            """,
-            new { command.OptionId },
-            transaction);
+        var platformGroup = new PlatformGroup(
+            PlatformKind.Telegram,
+            command.ChatId.ToString(),
+            string.Empty);
 
-        if (proposal is null)
+        var sharedCommand = new GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleVoteCommand(
+            command.OptionId,
+            platformUser,
+            platformGroup,
+            command.CallbackQueryId,
+            TelegramPlatformIds.Message(command.ChatId, null, command.MessageId));
+
+        var result = await sharedHandler.HandleAsync(sharedCommand, ct);
+
+        if (!result.Success)
         {
-            await AnswerAsync(command.CallbackQueryId, "Голосование уже завершено или не найдено.", ct);
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.CallbackQueryId, result.ReplyText!, result.ReplyText!.Contains("дедлайн")),
+                ct);
             return;
         }
 
-        if (proposal.VotingDeadlineAt <= DateTimeOffset.UtcNow)
-        {
-            await AnswerAsync(command.CallbackQueryId, "Дедлайн уже прошёл. Результаты скоро будут применены.", ct, showAlert: true);
-            return;
-        }
-
-        var playerId = await connection.ExecuteScalarAsync<Guid?>(
-            """
-            SELECT p.id
-            FROM session_participants sp
-            JOIN players p ON p.id = sp.player_id
-            WHERE sp.session_id = @SessionId
-              AND p.telegram_id = @TelegramUserId
-              AND sp.is_gm = false
-              AND sp.registration_status = @Active
-            """,
-            new { proposal.SessionId, command.TelegramUserId, Active = ParticipantRegistrationStatus.Active },
-            transaction);
-
-        if (playerId is null)
-        {
-            await AnswerAsync(command.CallbackQueryId, "Вы не являетесь участником этой сессии.", ct);
-            return;
-        }
-
-        await connection.ExecuteAsync(
-            """
-            INSERT INTO reschedule_option_votes (proposal_id, player_id, option_id)
-            VALUES (@ProposalId, @PlayerId, @OptionId)
-            ON CONFLICT (proposal_id, player_id) DO UPDATE
-            SET option_id = EXCLUDED.option_id,
-                voted_at = now()
-            """,
-            new
-            {
-                ProposalId = proposal.Id,
-                PlayerId = playerId.Value,
-                command.OptionId
-            },
-            transaction);
-
-        var participants = (await connection.QueryAsync<VoteParticipantDto>(
-            """
-            SELECT p.id AS PlayerId,
-                   p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   p.telegram_id AS TelegramId
-            FROM session_participants sp
-            JOIN players p ON p.id = sp.player_id
-            WHERE sp.session_id = @SessionId
-              AND sp.is_gm = false
-              AND sp.registration_status = @Active
-            ORDER BY p.display_name
-            """,
-            new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
-            transaction)).ToList();
-
-        var options = (await connection.QueryAsync<RescheduleOptionDto>(
-            """
-            SELECT id AS OptionId,
-                   display_order AS DisplayOrder,
-                   proposed_at AS ProposedAt
-            FROM reschedule_options
-            WHERE proposal_id = @ProposalId
-            ORDER BY display_order
-            """,
-            new { ProposalId = proposal.Id },
-            transaction)).ToList();
-
-        var votes = (await connection.QueryAsync<RescheduleOptionVoteDto>(
-            """
-            SELECT rov.option_id AS OptionId,
-                   p.id AS PlayerId,
-                   p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername
-            FROM reschedule_option_votes rov
-            JOIN players p ON p.id = rov.player_id
-            WHERE rov.proposal_id = @ProposalId
-            ORDER BY rov.voted_at, p.display_name
-            """,
-            new { ProposalId = proposal.Id },
-            transaction)).ToList();
-
-        await transaction.CommitAsync(ct);
-
         var voteText = HandleRescheduleTimeInputHandler.BuildVotingMessage(
-            proposal.Title,
-            proposal.CurrentScheduledAt,
-            proposal.VotingDeadlineAt,
-            options,
-            participants,
-            votes);
-        var keyboard = HandleRescheduleTimeInputHandler.BuildVotingKeyboard(options);
+            result.Title!,
+            result.CurrentScheduledAt,
+            result.VotingDeadlineAt,
+            result.Options,
+            result.Participants,
+            result.Votes);
+        var keyboard = HandleRescheduleTimeInputHandler.BuildVotingKeyboard(result.Options);
 
         try
         {
@@ -152,12 +70,11 @@ public sealed class HandleRescheduleVoteHandler(
         }
         catch (Exception ex)
         {
-            logger.LogWarning(ex, "Failed to update reschedule vote message for proposal {ProposalId}", proposal.Id);
+            logger.LogWarning(ex, "Failed to update reschedule vote message for proposal {ProposalId}", result.ProposalId);
         }
 
-        await AnswerAsync(command.CallbackQueryId, "Ваш голос учтён. До дедлайна его можно изменить.", ct);
+        await messenger.AnswerInteractionAsync(
+            new PlatformInteractionReply(command.CallbackQueryId, result.ReplyText!),
+            ct);
     }
-
-    private Task AnswerAsync(string callbackQueryId, string text, CancellationToken ct, bool showAlert = false) =>
-        messenger.AnswerInteractionAsync(new PlatformInteractionReply(callbackQueryId, text, showAlert), ct);
 }

src/GmRelay.Bot/Features/Sessions/RescheduleSession/InitiateRescheduleHandler.cs

@@ -45,12 +45,13 @@ public sealed class InitiateRescheduleHandler(
                        FROM group_managers gm
                        JOIN players p ON p.id = gm.player_id
                        WHERE gm.group_id = s.group_id
-                         AND p.telegram_id = @TelegramUserId
+                         AND p.platform = 'Telegram'
+                         AND p.external_user_id = @ExternalUserId
                    ) AS CanManage
             FROM sessions s
             WHERE s.id = @SessionId AND s.status != @Cancelled
             """,
-            new { command.SessionId, command.TelegramUserId, Cancelled = SessionStatus.Cancelled });
+            new { command.SessionId, ExternalUserId = command.TelegramUserId.ToString(), Cancelled = SessionStatus.Cancelled });
 
         if (session is null)
         {
@@ -83,10 +84,10 @@ public sealed class InitiateRescheduleHandler(
         // 3. Create proposal in AwaitingTime status
         await connection.ExecuteAsync(
             """
-            INSERT INTO reschedule_proposals (session_id, proposed_by, source_platform, status)
-            VALUES (@SessionId, @GmId, 'Telegram', 'AwaitingTime')
+            INSERT INTO reschedule_proposals (session_id, proposed_by_external_user_id, source_platform, status)
+            VALUES (@SessionId, @ProposedBy, 'Telegram', 'AwaitingTime')
             """,
-            new { command.SessionId, GmId = command.TelegramUserId });
+            new { command.SessionId, ProposedBy = command.TelegramUserId.ToString() });
 
         logger.LogInformation("Reschedule initiated for session {SessionId} by GM {GmId}", command.SessionId, command.TelegramUserId);
 

src/GmRelay.Bot/Features/Sessions/RescheduleSession/RescheduleVotingDeadlineService.cs

@@ -79,7 +79,7 @@ public sealed class RescheduleVotingDeadlineService(
             """
             SELECT rp.vote_message_id AS VoteMessageId,
                    s.batch_message_id AS BatchMessageId,
-                   g.telegram_chat_id AS TelegramChatId,
+                   g.external_group_id::BIGINT AS TelegramChatId,
                    s.thread_id AS ThreadId
             FROM reschedule_proposals rp
             JOIN sessions s ON s.id = rp.session_id
@@ -169,7 +169,7 @@ public sealed class RescheduleVotingDeadlineService(
                 """
                 SELECT sp.session_id AS SessionId,
                        p.display_name AS DisplayName,
-                       p.telegram_username AS TelegramUsername,
+                       p.external_username AS TelegramUsername,
                        sp.registration_status AS RegistrationStatus
                 FROM session_participants sp
                 JOIN players p ON sp.player_id = p.id

src/GmRelay.Bot/Infrastructure/Telegram/TelegramPlatformMessenger.cs

@@ -95,6 +95,68 @@ public sealed class TelegramPlatformMessenger(
             cancellationToken: ct);
     }
 
+    public async Task SendGroupMessageAsync(PlatformGroup group, string htmlText, IReadOnlyList<PlatformMessageAction> actions, CancellationToken ct)
+    {
+        EnsureTelegram(group.Platform);
+        await bot.SendMessage(
+            chatId: ParseLong(group.ExternalGroupId),
+            messageThreadId: ParseNullableInt(group.ExternalThreadId),
+            text: htmlText,
+            parseMode: ParseMode.Html,
+            replyMarkup: BuildActionsMarkup(actions),
+            cancellationToken: ct);
+    }
+
+    public async Task UpdateGroupMessageAsync(PlatformMessageRef messageRef, string htmlText, IReadOnlyList<PlatformMessageAction> actions, CancellationToken ct)
+    {
+        EnsureTelegram(messageRef.Platform);
+        await bot.EditMessageText(
+            chatId: ParseLong(messageRef.ExternalGroupId),
+            messageId: ParseInt(messageRef.ExternalMessageId),
+            text: htmlText,
+            parseMode: ParseMode.Html,
+            replyMarkup: BuildActionsMarkup(actions),
+            cancellationToken: ct);
+    }
+
+    public async Task<PlatformMessageRef> CreateThreadAsync(PlatformGroup group, string title, CancellationToken ct)
+    {
+        EnsureTelegram(group.Platform);
+        var topic = await bot.CreateForumTopic(
+            chatId: ParseLong(group.ExternalGroupId),
+            name: title,
+            cancellationToken: ct);
+
+        return new PlatformMessageRef(
+            PlatformKind.Telegram,
+            group.ExternalGroupId,
+            topic.MessageThreadId.ToString(CultureInfo.InvariantCulture),
+            string.Empty);
+    }
+
+    public Task DeleteThreadAsync(PlatformGroup group, CancellationToken ct)
+    {
+        EnsureTelegram(group.Platform);
+        if (string.IsNullOrWhiteSpace(group.ExternalThreadId))
+        {
+            return Task.CompletedTask;
+        }
+
+        return bot.DeleteForumTopic(
+            ParseLong(group.ExternalGroupId),
+            ParseInt(group.ExternalThreadId),
+            cancellationToken: ct);
+    }
+
+    public Task DeleteMessageAsync(PlatformMessageRef messageRef, CancellationToken ct)
+    {
+        EnsureTelegram(messageRef.Platform);
+        return bot.DeleteMessage(
+            ParseLong(messageRef.ExternalGroupId),
+            ParseInt(messageRef.ExternalMessageId),
+            cancellationToken: ct);
+    }
+
     public Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct)
     {
         EnsureTelegram(message.Recipient.Platform);

src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs

@@ -5,6 +5,9 @@ using GmRelay.Shared.Features.Sessions.CreateSession;
 using GmRelay.Shared.Rendering;
 using GmRelay.Bot.Features.Sessions.CreateSession;
 using GmRelay.Bot.Features.Sessions.ListSessions;
+using BotCreateSessionHandler = GmRelay.Bot.Features.Sessions.CreateSession.CreateSessionHandler;
+using BotRescheduleTimeInputHandler = GmRelay.Bot.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputHandler;
+using BotRescheduleVoteHandler = GmRelay.Bot.Features.Sessions.RescheduleSession.HandleRescheduleVoteHandler;
 using GmRelay.Bot.Features.Sessions.ExportCalendar;
 using GmRelay.Bot.Features.Sessions.RescheduleSession;
 using Telegram.Bot;
@@ -20,7 +23,7 @@ namespace GmRelay.Bot.Infrastructure.Telegram;
 /// </summary>
 public sealed class UpdateRouter(
     HandleRsvpHandler rsvpHandler,
-    CreateSessionHandler createSessionHandler,
+    BotCreateSessionHandler createSessionHandler,
     JoinSessionHandler joinSessionHandler,
     LeaveSessionHandler leaveSessionHandler,
     PromoteWaitlistedPlayerHandler promoteWaitlistedPlayerHandler,
@@ -29,8 +32,8 @@ public sealed class UpdateRouter(
     ListSessionsHandler listSessionsHandler,
     ExportCalendarHandler exportCalendarHandler,
     InitiateRescheduleHandler initiateRescheduleHandler,
-    HandleRescheduleTimeInputHandler rescheduleTimeInputHandler,
-    HandleRescheduleVoteHandler rescheduleVoteHandler,
+    BotRescheduleTimeInputHandler rescheduleTimeInputHandler,
+    BotRescheduleVoteHandler rescheduleVoteHandler,
     ITelegramBotClient bot,
     IConfiguration configuration,
     ILogger<UpdateRouter> logger) : ITelegramUpdateHandler

src/GmRelay.Bot/Migrations/V023__game_groups_telegram_chat_id_nullable.sql

@@ -0,0 +1,14 @@
+-- =============================================================
+-- V023: Make legacy Telegram columns nullable for multi-platform
+-- =============================================================
+-- Scope: Allow Discord (and future platforms) to create players
+-- and game_groups without legacy telegram_* values.
+-- Existing Telegram data was backfilled in V016.
+-- =============================================================
+
+ALTER TABLE game_groups
+    ALTER COLUMN telegram_chat_id DROP NOT NULL,
+    ALTER COLUMN gm_telegram_id DROP NOT NULL;
+
+ALTER TABLE players
+    ALTER COLUMN telegram_id DROP NOT NULL;

src/GmRelay.Bot/Migrations/V024__deprecate_telegram_columns.sql

@@ -0,0 +1,41 @@
+-- =============================================================
+-- V024: Deprecate legacy Telegram-specific columns
+-- =============================================================
+-- Scope: Complete platform migration by backfilling any remaining
+-- external_* gaps and officially deprecating telegram_* columns.
+-- No columns are dropped — rollback-safe.
+-- =============================================================
+
+-- 1. Backfill players platform identity (safeguard for any rows missed in V016)
+UPDATE players
+   SET platform          = 'Telegram',
+       external_user_id  = telegram_id::TEXT,
+       external_username = telegram_username
+ WHERE platform IS NULL;
+
+-- 2. Backfill game_groups platform identity (safeguard for any rows missed in V016)
+UPDATE game_groups
+   SET platform          = 'Telegram',
+       external_group_id = telegram_chat_id::TEXT
+ WHERE platform IS NULL;
+
+-- 3. Add platform identity to calendar_subscriptions
+ALTER TABLE calendar_subscriptions
+    ADD COLUMN user_platform   VARCHAR(50),
+    ADD COLUMN user_external_id VARCHAR(255);
+
+UPDATE calendar_subscriptions
+   SET user_external_id = user_telegram_id::TEXT,
+       user_platform    = 'Telegram'
+ WHERE user_platform IS NULL;
+
+-- 4. Migrate calendar subscription index
+DROP INDEX IF EXISTS ix_calendar_subscriptions_user_telegram_id;
+CREATE INDEX ix_calendar_subscriptions_user_external_id ON calendar_subscriptions (user_external_id);
+
+-- 5. Deprecation comments on legacy columns
+COMMENT ON COLUMN players.telegram_id         IS 'DEPRECATED: use platform + external_user_id';
+COMMENT ON COLUMN players.telegram_username   IS 'DEPRECATED: use external_username';
+COMMENT ON COLUMN game_groups.telegram_chat_id IS 'DEPRECATED: use platform + external_group_id';
+COMMENT ON COLUMN game_groups.gm_telegram_id   IS 'DEPRECATED: group ownership is tracked in group_managers';
+COMMENT ON COLUMN calendar_subscriptions.user_telegram_id IS 'DEPRECATED: use user_platform + user_external_id';

src/GmRelay.Bot/Migrations/V025__reschedule_proposals_telegram_external.sql

@@ -0,0 +1,11 @@
+-- =============================================================
+-- V025: Backfill proposed_by_external_user_id for Telegram proposals
+-- =============================================================
+-- Scope: Ensure all reschedule_proposals have proposed_by_external_user_id
+-- populated so that InitiateRescheduleHandler can stop writing proposed_by.
+-- =============================================================
+
+UPDATE reschedule_proposals
+   SET proposed_by_external_user_id = proposed_by::TEXT
+ WHERE proposed_by_external_user_id IS NULL
+   AND proposed_by IS NOT NULL;

src/GmRelay.Bot/Program.cs

@@ -66,7 +66,8 @@ builder.Services.AddSingleton<SendJoinLinkHandler>();
 builder.Services.AddSingleton<ISendJoinLinkHandler>(sp => sp.GetRequiredService<SendJoinLinkHandler>());
 builder.Services.AddSingleton<SendOneHourReminderHandler>();
 builder.Services.AddSingleton<ISendOneHourReminderHandler>(sp => sp.GetRequiredService<SendOneHourReminderHandler>());
-builder.Services.AddSingleton<CreateSessionHandler>();
+builder.Services.AddSingleton<GmRelay.Shared.Features.Sessions.CreateSession.CreateSessionHandler>();
+builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.CreateSession.CreateSessionHandler>();
 builder.Services.AddSingleton<IScheduleMessageUpdateLock, ScheduleMessageUpdateLock>();
 builder.Services.AddSingleton<JoinSessionHandler>();
 builder.Services.AddSingleton<LeaveSessionHandler>();
@@ -74,10 +75,13 @@ builder.Services.AddSingleton<PromoteWaitlistedPlayerHandler>();
 builder.Services.AddSingleton<CancelSessionHandler>();
 builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ListSessions.DeleteSessionHandler>();
 builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ListSessions.ListSessionsHandler>();
+builder.Services.AddSingleton<GmRelay.Shared.Features.Sessions.ExportCalendar.ExportCalendarHandler>();
 builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ExportCalendar.ExportCalendarHandler>();
 builder.Services.AddSingleton<InitiateRescheduleHandler>();
-builder.Services.AddSingleton<HandleRescheduleTimeInputHandler>();
-builder.Services.AddSingleton<HandleRescheduleVoteHandler>();
+builder.Services.AddSingleton<GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputHandler>();
+builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputHandler>();
+builder.Services.AddSingleton<GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleVoteHandler>();
+builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.RescheduleSession.HandleRescheduleVoteHandler>();
 builder.Services.AddSingleton<RescheduleVotingFinalizer>();
 
 builder.Services.AddSingleton<DirectSessionNotificationSender>();

src/GmRelay.DiscordBot/Features/Sessions/DiscordDeleteSessionHandler.cs

@@ -0,0 +1,84 @@
+using Dapper;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed record DiscordDeleteSessionResult(
+    string ReplyText,
+    SessionBatchViewModel? UpdatedView,
+    string? EmptyMessage = null);
+
+public sealed class DiscordDeleteSessionHandler(
+    NpgsqlDataSource dataSource,
+    DiscordPermissionChecker permissionChecker,
+    DiscordListSessionsHandler listSessionsHandler,
+    ILogger<DiscordDeleteSessionHandler> logger)
+{
+    public async Task<DiscordDeleteSessionResult> HandleAsync(
+        string guildId,
+        string channelId,
+        ulong userId,
+        ulong resolvedPermissions,
+        ulong guildOwnerId,
+        Guid sessionId,
+        CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        var dbManagerUserIds = await connection.QueryAsync<ulong>(
+            @"SELECT CAST(p.external_user_id AS BIGINT)
+              FROM group_managers gm
+              JOIN players p ON p.id = gm.player_id
+              JOIN game_groups g ON g.id = gm.group_id
+              WHERE g.platform = 'Discord' AND g.external_group_id = @GuildId",
+            new { GuildId = guildId });
+
+        if (!permissionChecker.CanManageSchedule(guildOwnerId, userId, dbManagerUserIds, resolvedPermissions))
+        {
+            return new DiscordDeleteSessionResult(
+                "Только owner, администратор или manager могут удалять сессии.",
+                UpdatedView: null);
+        }
+
+        await using var transaction = await connection.BeginTransactionAsync(cancellationToken);
+        var deletedRows = await connection.ExecuteAsync(
+            """
+            DELETE FROM sessions s
+            USING game_groups g
+            WHERE s.group_id = g.id
+              AND s.id = @SessionId
+              AND g.platform = 'Discord'
+              AND g.external_group_id = @GuildId
+            """,
+            new { SessionId = sessionId, GuildId = guildId },
+            transaction);
+
+        await transaction.CommitAsync(cancellationToken);
+
+        if (deletedRows == 0)
+        {
+            return new DiscordDeleteSessionResult(
+                "Сессия не найдена или уже удалена.",
+                UpdatedView: null);
+        }
+
+        logger.LogInformation("Deleted Discord session {SessionId} in guild {GuildId}", sessionId, guildId);
+
+        var updatedView = await listSessionsHandler.BuildScheduleAsync(
+            guildId,
+            channelId,
+            userId,
+            resolvedPermissions,
+            guildOwnerId,
+            cancellationToken);
+
+        return updatedView is null
+            ? new DiscordDeleteSessionResult(
+                "Сессия удалена.",
+                UpdatedView: null,
+                EmptyMessage: "В этом сервере нет предстоящих игр.")
+            : new DiscordDeleteSessionResult("Сессия удалена.", updatedView);
+    }
+}

src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsCommand.cs

@@ -1,9 +1,9 @@
+using NetCord;
 using NetCord.Rest;
 using NetCord.Services.ApplicationCommands;
 
 namespace GmRelay.DiscordBot.Features.Sessions;
 
-[SlashCommand("listsessions", "Show upcoming game sessions in this server")]
 public class DiscordListSessionsCommand : ApplicationCommandModule<SlashCommandContext>
 {
     private readonly DiscordListSessionsHandler _handler;
@@ -13,13 +13,23 @@ public class DiscordListSessionsCommand : ApplicationCommandModule<SlashCommandC
         _handler = handler;
     }
 
+    [SlashCommand("listsessions", "Show upcoming game sessions in this server")]
     public async Task ExecuteAsync()
     {
-        var guildId = Context.Guild?.Id.ToString()
+        var guildId = Context.Interaction.GuildId?.ToString()
             ?? throw new InvalidOperationException("This command can only be used in a guild.");
         var channelId = Context.Channel.Id.ToString();
+        var member = Context.User as GuildInteractionUser;
+        var resolvedPermissions = member is null ? 0UL : (ulong)member.Permissions;
+        var guildOwnerId = 0UL;
 
-        var view = await _handler.BuildScheduleAsync(guildId, channelId, CancellationToken.None);
+        var view = await _handler.BuildScheduleAsync(
+            guildId,
+            channelId,
+            Context.User.Id,
+            resolvedPermissions,
+            guildOwnerId,
+            CancellationToken.None);
 
         if (view is null)
         {

src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsHandler.cs

@@ -1,4 +1,5 @@
 using Dapper;
+using GmRelay.DiscordBot.Infrastructure.Discord;
 using GmRelay.Shared.Domain;
 using GmRelay.Shared.Rendering;
 using Npgsql;
@@ -9,11 +10,22 @@ internal sealed record DiscordSessionListItemDto(
     Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers,
     int PlayerCount, int WaitlistCount);
 
-public sealed class DiscordListSessionsHandler(NpgsqlDataSource dataSource)
+public sealed class DiscordListSessionsHandler(
+    NpgsqlDataSource dataSource,
+    DiscordPermissionChecker permissionChecker)
 {
+    public Task<SessionBatchViewModel?> BuildScheduleAsync(
+        string guildId,
+        string channelId,
+        CancellationToken cancellationToken) =>
+        BuildScheduleAsync(guildId, channelId, 0, 0, 0, cancellationToken);
+
     public async Task<SessionBatchViewModel?> BuildScheduleAsync(
         string guildId,
         string channelId,
+        ulong userId,
+        ulong resolvedPermissions,
+        ulong guildOwnerId,
         CancellationToken cancellationToken)
     {
         await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
@@ -21,15 +33,15 @@ public sealed class DiscordListSessionsHandler(NpgsqlDataSource dataSource)
         var sessions = await connection.QueryAsync<DiscordSessionListItemDto>(
             @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt, s.status as Status,
                      s.max_players as MaxPlayers,
-                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Active) as PlayerCount,
-                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted) as WaitlistCount
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Active)::int as PlayerCount,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted)::int as WaitlistCount
               FROM sessions s
               JOIN game_groups g ON s.group_id = g.id
               LEFT JOIN session_participants sp ON s.id = sp.session_id
               WHERE g.platform = 'Discord'
                 AND g.external_group_id = @GuildId
                 AND s.status != @Cancelled
-                AND s.scheduled_at > NOW()
+                AND s.scheduled_at > now() - interval '4 hours'
               GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players
               ORDER BY s.scheduled_at ASC",
             new
@@ -44,11 +56,25 @@ public sealed class DiscordListSessionsHandler(NpgsqlDataSource dataSource)
         if (sessionList.Count == 0)
             return null;
 
+        var dbManagerUserIds = await connection.QueryAsync<ulong>(
+            @"SELECT CAST(p.external_user_id AS BIGINT)
+              FROM group_managers gm
+              JOIN players p ON p.id = gm.player_id
+              JOIN game_groups g ON g.id = gm.group_id
+              WHERE g.platform = 'Discord' AND g.external_group_id = @GuildId",
+            new { GuildId = guildId });
+
+        var canManage = permissionChecker.CanManageSchedule(
+            guildOwnerId,
+            userId,
+            dbManagerUserIds,
+            resolvedPermissions);
+
         var sessionIds = sessionList.Select(s => s.Id).ToList();
         var participants = await connection.QueryAsync<ParticipantBatchDto>(
             @"SELECT sp.session_id as SessionId,
                      p.display_name as DisplayName,
-                     COALESCE(p.external_username, p.telegram_username) as TelegramUsername,
+                     p.external_username as TelegramUsername,
                      sp.registration_status as RegistrationStatus
               FROM session_participants sp
               JOIN players p ON p.id = sp.player_id
@@ -60,6 +86,25 @@ public sealed class DiscordListSessionsHandler(NpgsqlDataSource dataSource)
         var batchDtos = sessionList.Select(s => new SessionBatchDto(
             s.Id, s.ScheduledAt, s.Status, s.MaxPlayers, "")).ToList();
 
-        return SessionBatchViewBuilder.Build(firstTitle, batchDtos, participants.ToList());
+        var view = SessionBatchViewBuilder.Build(firstTitle, batchDtos, participants.ToList());
+        return canManage ? AddManagerActions(view) : view;
     }
+
+    internal static SessionBatchViewModel AddManagerActions(SessionBatchViewModel view) =>
+        view with
+        {
+            Sessions = view.Sessions
+                .Select(session =>
+                {
+                    if (SessionStatus.IsCancelled(session.Status))
+                        return session;
+
+                    var actions = session.AvailableActions
+                        .Concat([new AvailableAction("delete_session", $"Удалить {session.ScheduledAt.FormatMoscowShort()}", session.SessionId)])
+                        .ToList();
+
+                    return session with { AvailableActions = actions };
+                })
+                .ToList()
+        };
 }

src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionCommand.cs

@@ -1,10 +1,10 @@
-using GmRelay.DiscordBot.Rendering;
+using GmRelay.DiscordBot.Rendering;
+using NetCord;
 using NetCord.Rest;
 using NetCord.Services.ApplicationCommands;
 
 namespace GmRelay.DiscordBot.Features.Sessions;
 
-[SlashCommand("newsession", "Create a new game session")]
 public class DiscordNewSessionCommand : ApplicationCommandModule<SlashCommandContext>
 {
     private readonly DiscordNewSessionHandler _handler;
@@ -16,15 +16,54 @@ public class DiscordNewSessionCommand : ApplicationCommandModule<SlashCommandCon
         _logger = logger;
     }
 
+    [SlashCommand("newsession", "Create a new game session")]
     public async Task ExecuteAsync(
         [SlashCommandParameter(Name = "title", Description = "Game title")] string title,
         [SlashCommandParameter(Name = "time", Description = "Session time (YYYY-MM-DD HH:mm or DD.MM.YYYY HH:mm)")] string time,
         [SlashCommandParameter(Name = "seats", Description = "Maximum number of players")] long? seats = null,
         [SlashCommandParameter(Name = "link", Description = "Join link")] string? link = null)
     {
-        var guild = Context.Guild
+        _logger.LogInformation(
+            "newsession called by user {UserId} ({UserType}) in guild {GuildId}, channel {ChannelId}",
+            Context.User.Id,
+            Context.User.GetType().Name,
+            Context.Interaction.GuildId,
+            Context.Channel?.Id);
+
+        var guildId = Context.Interaction.GuildId
             ?? throw new InvalidOperationException("This command can only be used in a guild.");
 
+        var member = Context.User as GuildInteractionUser;
+        if (member is null)
+        {
+            _logger.LogError("Context.User is not GuildInteractionUser. Actual type: {ActualType}", Context.User.GetType().Name);
+            throw new InvalidOperationException("Guild member data not available in interaction.");
+        }
+
+        var resolvedPermissions = (ulong)member.Permissions;
+        _logger.LogInformation("Resolved permissions for user {UserId}: {Permissions}", Context.User.Id, resolvedPermissions);
+
+        ulong guildOwnerId = 0;
+        var guildName = guildId.ToString();
+        try
+        {
+            var guild = await Context.Client.Rest.GetGuildAsync(guildId);
+            guildOwnerId = guild.OwnerId;
+            guildName = guild.Name;
+            _logger.LogInformation("Guild owner id: {OwnerId}", guildOwnerId);
+        }
+        catch (RestException ex) when (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
+        {
+            _logger.LogWarning(
+                ex,
+                "Bot is not a REST member of guild {GuildId}; using resolved permissions from interaction payload",
+                guildId);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Unexpected error fetching guild {GuildId}", guildId);
+        }
+
         var timeResult = DiscordNewSessionHandler.ParseTimeInput(time);
         if (!timeResult.IsSuccess)
         {
@@ -33,55 +72,57 @@ public class DiscordNewSessionCommand : ApplicationCommandModule<SlashCommandCon
             return;
         }
 
-        var resolvedPermissions = GetResolvedPermissions(guild, Context.User.Id);
+        // Defer the response to avoid Discord 3-second interaction timeout
+        await Context.Interaction.SendResponseAsync(InteractionCallback.DeferredMessage());
 
         try
         {
+            _logger.LogInformation("Creating session for guild {GuildId}, user {UserId}", guildId, Context.User.Id);
+
             var view = await _handler.HandleAsync(
-                guildId: guild.Id.ToString(),
-                channelId: Context.Channel.Id.ToString(),
+                guildId: guildId.ToString(),
+                channelId: Context.Channel!.Id.ToString(),
+                groupName: guildName,
                 userId: Context.User.Id,
                 userDisplayName: Context.User.GlobalName ?? Context.User.Username,
                 resolvedPermissions: resolvedPermissions,
-                guildOwnerId: guild.OwnerId,
+                guildOwnerId: guildOwnerId,
                 title: title,
                 scheduledAt: timeResult.Value,
                 maxPlayers: seats is null ? null : (int)seats.Value,
                 joinLink: link,
                 CancellationToken.None);
 
+            _logger.LogInformation("Session created successfully. Building render.");
+
             var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(view);
-            await Context.Interaction.SendResponseAsync(
-                InteractionCallback.Message(new InteractionMessageProperties()
-                    .WithContent(":white_check_mark: **Session created successfully!**")
-                    .WithEmbeds(embeds)
-                    .WithComponents(actionRows)));
+
+            _logger.LogInformation("Sending success response.");
+
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = ":white_check_mark: **Session created successfully!**";
+                message.Embeds = embeds;
+                message.Components = actionRows;
+            });
+
+            _logger.LogInformation("Success response sent.");
         }
         catch (UnauthorizedAccessException ex)
         {
-            await Context.Interaction.SendResponseAsync(
-                InteractionCallback.Message($":no_entry: {ex.Message}"));
+            _logger.LogWarning(ex, "Unauthorized session creation attempt by user {UserId}", Context.User.Id);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $":no_entry: {ex.Message}";
+            });
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Failed to create session for user {UserId} in guild {GuildId}", Context.User.Id, guild.Id);
-            await Context.Interaction.SendResponseAsync(
-                InteractionCallback.Message(":boom: An error occurred while creating the session."));
+            _logger.LogError(ex, "Failed to create session for user {UserId} in guild {GuildId}", Context.User.Id, guildId);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = ":boom: An error occurred while creating the session.";
+            });
         }
     }
-
-    private static ulong GetResolvedPermissions(NetCord.Gateway.Guild guild, ulong userId)
-    {
-        if (!guild.Users.TryGetValue(userId, out var guildUser))
-            return 0;
-
-        ulong resolved = 0;
-        foreach (var roleId in guildUser.RoleIds)
-        {
-            if (guild.Roles.TryGetValue(roleId, out var role))
-                resolved |= (ulong)role.Permissions;
-        }
-
-        return resolved;
-    }
 }

src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionHandler.cs

@@ -1,9 +1,9 @@
 using Dapper;
 using GmRelay.DiscordBot.Infrastructure.Discord;
 using GmRelay.Shared.Domain;
-using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
+using System.Globalization;
 
 namespace GmRelay.DiscordBot.Features.Sessions;
 
@@ -12,35 +12,40 @@ public sealed record TimeParseResult(bool IsSuccess, DateTimeOffset Value, strin
 public sealed class DiscordNewSessionHandler(
     NpgsqlDataSource dataSource,
     DiscordPermissionChecker permissionChecker,
-    IPlatformMessenger messenger,
     ILogger<DiscordNewSessionHandler> logger)
 {
+    private static readonly TimeSpan MoscowOffset = TimeSpan.FromHours(3);
+
     public static TimeParseResult ParseTimeInput(string input)
     {
-        if (DateTimeOffset.TryParseExact(
-            input.Trim(),
+        var trimmed = input.Trim();
+
+        if (DateTime.TryParseExact(
+            trimmed,
             "yyyy-MM-dd HH:mm",
-            System.Globalization.CultureInfo.InvariantCulture,
-            System.Globalization.DateTimeStyles.AssumeUniversal,
-            out var result))
+            CultureInfo.InvariantCulture,
+            DateTimeStyles.None,
+            out var dt1))
         {
-            if (result < DateTimeOffset.UtcNow)
+            var offset = new DateTimeOffset(dt1, MoscowOffset).ToUniversalTime();
+            if (offset < DateTimeOffset.UtcNow)
                 return new TimeParseResult(false, default, "Дата находится в прошлом.");
 
-            return new TimeParseResult(true, result.ToUniversalTime(), null);
+            return new TimeParseResult(true, offset, null);
         }
 
-        if (DateTimeOffset.TryParseExact(
-            input.Trim(),
+        if (DateTime.TryParseExact(
+            trimmed,
             "dd.MM.yyyy HH:mm",
-            System.Globalization.CultureInfo.InvariantCulture,
-            System.Globalization.DateTimeStyles.AssumeUniversal,
-            out var altResult))
+            CultureInfo.InvariantCulture,
+            DateTimeStyles.None,
+            out var dt2))
         {
-            if (altResult < DateTimeOffset.UtcNow)
+            var offset = new DateTimeOffset(dt2, MoscowOffset).ToUniversalTime();
+            if (offset < DateTimeOffset.UtcNow)
                 return new TimeParseResult(false, default, "Дата находится в прошлом.");
 
-            return new TimeParseResult(true, altResult.ToUniversalTime(), null);
+            return new TimeParseResult(true, offset, null);
         }
 
         return new TimeParseResult(false, default, "Некорректный формат даты. Используйте YYYY-MM-DD HH:mm или DD.MM.YYYY HH:mm");
@@ -49,6 +54,7 @@ public sealed class DiscordNewSessionHandler(
     public async Task<SessionBatchViewModel> HandleAsync(
         string guildId,
         string channelId,
+        string groupName,
         ulong userId,
         string userDisplayName,
         ulong resolvedPermissions,
@@ -60,6 +66,9 @@ public sealed class DiscordNewSessionHandler(
         CancellationToken cancellationToken)
     {
         await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+        var displayGroupName = string.IsNullOrWhiteSpace(groupName) || string.Equals(groupName, guildId, StringComparison.Ordinal)
+            ? title
+            : groupName.Trim();
 
         var dbManagerUserIds = await connection.QueryAsync<ulong>(
             @"SELECT CAST(p.external_user_id AS BIGINT)
@@ -75,6 +84,7 @@ public sealed class DiscordNewSessionHandler(
         }
 
         await using var transaction = await connection.BeginTransactionAsync(cancellationToken);
+        var transactionCommitted = false;
         try
         {
             await connection.ExecuteAsync(
@@ -89,13 +99,13 @@ public sealed class DiscordNewSessionHandler(
 
             var groupId = await connection.ExecuteScalarAsync<Guid>(
                 @"INSERT INTO game_groups (name, platform, external_group_id, external_channel_id)
-                  VALUES (@GuildId, 'Discord', @GuildId, @ChannelId)
+                  VALUES (@GroupName, 'Discord', @GuildId, @ChannelId)
                   ON CONFLICT (platform, external_group_id)
                   WHERE platform IS NOT NULL AND external_group_id IS NOT NULL
                   DO UPDATE SET name = EXCLUDED.name,
                                 external_channel_id = COALESCE(EXCLUDED.external_channel_id, game_groups.external_channel_id)
                   RETURNING id",
-                new { GuildId = guildId, ChannelId = channelId },
+                new { GroupName = displayGroupName, GuildId = guildId, ChannelId = channelId },
                 transaction);
 
             await connection.ExecuteAsync(
@@ -125,23 +135,19 @@ public sealed class DiscordNewSessionHandler(
                 transaction);
 
             await transaction.CommitAsync(cancellationToken);
+            transactionCommitted = true;
             logger.LogInformation("Created session {SessionId} in guild {GuildId}", sessionId, guildId);
 
             var sessions = new[] { new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, maxPlayers, joinLink ?? string.Empty) };
-            var view = SessionBatchViewBuilder.Build(title, sessions, Array.Empty<ParticipantBatchDto>());
-
-            await messenger.SendScheduleAsync(
-                new PlatformScheduleMessage(
-                    new PlatformGroup(PlatformKind.Discord, guildId, guildId, channelId),
-                    view,
-                    null),
-                cancellationToken);
-
-            return view;
+            return SessionBatchViewBuilder.Build(title, sessions, Array.Empty<ParticipantBatchDto>());
         }
         catch
         {
-            await transaction.RollbackAsync(cancellationToken);
+            if (!transactionCommitted)
+            {
+                await transaction.RollbackAsync(cancellationToken);
+            }
+
             throw;
         }
     }

src/GmRelay.DiscordBot/Features/Sessions/DiscordRescheduleCommand.cs

@@ -1,9 +1,9 @@
 namespace GmRelay.DiscordBot.Features.Sessions;
 
+using NetCord;
 using NetCord.Rest;
 using NetCord.Services.ApplicationCommands;
 
-[SlashCommand("reschedule", "Initiate reschedule voting for a session")]
 public class DiscordRescheduleCommand : ApplicationCommandModule<SlashCommandContext>
 {
     private readonly DiscordRescheduleHandler _handler;
@@ -15,6 +15,7 @@ public class DiscordRescheduleCommand : ApplicationCommandModule<SlashCommandCon
         _logger = logger;
     }
 
+    [SlashCommand("reschedule", "Initiate reschedule voting for a session")]
     public async Task ExecuteAsync(
         [SlashCommandParameter(Name = "session", Description = "Session ID to reschedule")] string sessionIdText,
         [SlashCommandParameter(Name = "option1", Description = "First time option (YYYY-MM-DD HH:mm)")] string option1,
@@ -22,9 +23,44 @@ public class DiscordRescheduleCommand : ApplicationCommandModule<SlashCommandCon
         [SlashCommandParameter(Name = "option3", Description = "Third time option (optional)")] string? option3 = null,
         [SlashCommandParameter(Name = "deadline", Description = "Voting deadline (YYYY-MM-DD HH:mm)")] string deadline = "")
     {
-        var guild = Context.Guild
+        _logger.LogInformation(
+            "reschedule called by user {UserId} ({UserType}) in guild {GuildId}",
+            Context.User.Id,
+            Context.User.GetType().Name,
+            Context.Interaction.GuildId);
+
+        var guildId = Context.Interaction.GuildId
             ?? throw new InvalidOperationException("This command can only be used in a guild.");
 
+        var member = Context.User as GuildInteractionUser;
+        if (member is null)
+        {
+            _logger.LogError("Context.User is not GuildInteractionUser. Actual type: {ActualType}", Context.User.GetType().Name);
+            throw new InvalidOperationException("Guild member data not available in interaction.");
+        }
+
+        var resolvedPermissions = (ulong)member.Permissions;
+        _logger.LogInformation("Resolved permissions for user {UserId}: {Permissions}", Context.User.Id, resolvedPermissions);
+
+        ulong guildOwnerId = 0;
+        try
+        {
+            var guild = await Context.Client.Rest.GetGuildAsync(guildId);
+            guildOwnerId = guild.OwnerId;
+            _logger.LogInformation("Guild owner id: {OwnerId}", guildOwnerId);
+        }
+        catch (RestException ex) when (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
+        {
+            _logger.LogWarning(
+                ex,
+                "Bot is not a REST member of guild {GuildId}; using resolved permissions from interaction payload",
+                guildId);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Unexpected error fetching guild {GuildId}", guildId);
+        }
+
         if (!Guid.TryParse(sessionIdText, out var sessionId))
         {
             await Context.Interaction.SendResponseAsync(
@@ -64,54 +100,55 @@ public class DiscordRescheduleCommand : ApplicationCommandModule<SlashCommandCon
             return;
         }
 
-        var resolvedPermissions = GetResolvedPermissions(guild, Context.User.Id);
+        // Defer the response to avoid Discord 3-second interaction timeout
+        await Context.Interaction.SendResponseAsync(InteractionCallback.DeferredMessage());
 
         try
         {
+            _logger.LogInformation("Initiating reschedule for session {SessionId} in guild {GuildId}", sessionId, guildId);
+
             var result = await _handler.HandleAsync(
-                guildId: guild.Id.ToString(),
-                channelId: Context.Channel.Id.ToString(),
+                guildId: guildId.ToString(),
+                channelId: Context.Channel!.Id.ToString(),
                 userId: Context.User.Id,
                 userDisplayName: Context.User.GlobalName ?? Context.User.Username,
                 resolvedPermissions: resolvedPermissions,
-                guildOwnerId: guild.OwnerId,
+                guildOwnerId: guildOwnerId,
                 sessionId: sessionId,
                 options: parsedOptions,
                 deadline: deadlineResult.Value,
                 CancellationToken.None);
 
-            await Context.Interaction.SendResponseAsync(
-                InteractionCallback.Message(
-                    $"🗳 Голосование за перенос запущено! Дедлайн: {deadlineResult.Value:yyyy-MM-dd HH:mm} UTC."));
+            _logger.LogInformation("Reschedule voting started for session {SessionId}, proposal {ProposalId}", sessionId, result.ProposalId);
+
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $"🗳 Голосование за перенос запущено! Дедлайн: {deadlineResult.Value:yyyy-MM-dd HH:mm} UTC.";
+            });
         }
         catch (UnauthorizedAccessException ex)
         {
-            await Context.Interaction.SendResponseAsync(
-                InteractionCallback.Message($":no_entry: {ex.Message}"));
+            _logger.LogWarning(ex, "Unauthorized reschedule attempt by user {UserId}", Context.User.Id);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $":no_entry: {ex.Message}";
+            });
         }
         catch (InvalidOperationException ex)
         {
-            await Context.Interaction.SendResponseAsync(
-                InteractionCallback.Message($":warning: {ex.Message}"));
+            _logger.LogWarning(ex, "Invalid reschedule request by user {UserId}", Context.User.Id);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $":warning: {ex.Message}";
+            });
         }
         catch (Exception ex)
         {
             _logger.LogError(ex, "Failed to initiate reschedule for session {SessionId}", sessionId);
-            await Context.Interaction.SendResponseAsync(
-                InteractionCallback.Message(":boom: Ошибка при запуске голосования."));
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = ":boom: Ошибка при запуске голосования.";
+            });
         }
     }
-
-    private static ulong GetResolvedPermissions(NetCord.Gateway.Guild guild, ulong userId)
-    {
-        if (!guild.Users.TryGetValue(userId, out var guildUser))
-            return 0;
-        ulong resolved = 0;
-        foreach (var roleId in guildUser.RoleIds)
-        {
-            if (guild.Roles.TryGetValue(roleId, out var role))
-                resolved |= (ulong)role.Permissions;
-        }
-        return resolved;
-    }
 }

src/GmRelay.DiscordBot/Features/Sessions/DiscordRescheduleVoteHandler.cs

@@ -1,114 +1,46 @@
-namespace GmRelay.DiscordBot.Features.Sessions;
-
-using Dapper;
 using GmRelay.DiscordBot.Rendering;
-using GmRelay.Shared.Domain;
 using GmRelay.Shared.Features.Sessions.RescheduleSession;
 using GmRelay.Shared.Platform;
-using Npgsql;
 using NetCord.Rest;
 
+namespace GmRelay.DiscordBot.Features.Sessions;
+
 public sealed record DiscordRescheduleVoteInput(
-    Guid OptionId, ulong UserId, string InteractionId,
-    string GuildId, string ChannelId, string MessageId);
+    Guid OptionId,
+    ulong UserId,
+    string InteractionId,
+    string GuildId,
+    string ChannelId,
+    string MessageId);
 
 public sealed class DiscordRescheduleVoteHandler(
-    NpgsqlDataSource dataSource,
+    GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleVoteHandler sharedHandler,
     RestClient restClient,
     ILogger<DiscordRescheduleVoteHandler> logger)
 {
     public async Task<string> HandleAsync(DiscordRescheduleVoteInput input, CancellationToken ct)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-        await using var transaction = await connection.BeginTransactionAsync(ct);
+        var command = new HandleRescheduleVoteCommand(
+            input.OptionId,
+            new PlatformUser(PlatformKind.Discord, input.UserId.ToString(), string.Empty, null),
+            new PlatformGroup(PlatformKind.Discord, input.GuildId, string.Empty, input.ChannelId),
+            input.InteractionId,
+            new PlatformMessageRef(PlatformKind.Discord, input.ChannelId, null, input.MessageId));
 
-        // 1. Load proposal + option
-        var proposal = await connection.QuerySingleOrDefaultAsync<VoteProposalDto>(
-            """
-            SELECT rp.id AS Id, rp.session_id AS SessionId, rp.voting_deadline_at AS VotingDeadlineAt,
-                   s.title AS Title, s.scheduled_at AS CurrentScheduledAt
-            FROM reschedule_options ro
-            JOIN reschedule_proposals rp ON rp.id = ro.proposal_id
-            JOIN sessions s ON s.id = rp.session_id
-            WHERE ro.id = @OptionId AND rp.status = 'Voting'
-            """,
-            new { input.OptionId },
-            transaction);
+        var result = await sharedHandler.HandleAsync(command, ct);
 
-        if (proposal is null)
-            return "Голосование уже завершено или не найдено.";
+        if (!result.Success)
+        {
+            return result.ReplyText!;
+        }
 
-        if (proposal.VotingDeadlineAt <= DateTimeOffset.UtcNow)
-            return "Дедлайн уже прошёл. Результаты скоро будут применены.";
-
-        // 2. Verify participant (Discord platform)
-        var playerId = await connection.ExecuteScalarAsync<Guid?>(
-            """
-            SELECT p.id
-            FROM session_participants sp
-            JOIN players p ON p.id = sp.player_id
-            WHERE sp.session_id = @SessionId
-              AND p.platform = 'Discord'
-              AND p.external_user_id = @UserId
-              AND sp.is_gm = false
-              AND sp.registration_status = @Active
-            """,
-            new { proposal.SessionId, UserId = input.UserId.ToString(), Active = ParticipantRegistrationStatus.Active },
-            transaction);
-
-        if (playerId is null)
-            return "Вы не являетесь участником этой сессии.";
-
-        // 3. Upsert vote
-        await connection.ExecuteAsync(
-            """
-            INSERT INTO reschedule_option_votes (proposal_id, player_id, option_id)
-            VALUES (@ProposalId, @PlayerId, @OptionId)
-            ON CONFLICT (proposal_id, player_id) DO UPDATE
-            SET option_id = EXCLUDED.option_id, voted_at = now()
-            """,
-            new { ProposalId = proposal.Id, PlayerId = playerId.Value, input.OptionId },
-            transaction);
-
-        // 4. Reload participants, options, votes for re-rendering
-        var participants = (await connection.QueryAsync<VoteParticipantDto>(
-            """
-            SELECT p.id AS PlayerId, p.display_name AS DisplayName, p.external_username AS TelegramUsername, 0 AS TelegramId
-            FROM session_participants sp
-            JOIN players p ON p.id = sp.player_id
-            WHERE sp.session_id = @SessionId AND sp.is_gm = false AND sp.registration_status = @Active
-            ORDER BY p.display_name
-            """,
-            new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
-            transaction)).ToList();
-
-        var options = (await connection.QueryAsync<RescheduleOptionDto>(
-            """
-            SELECT id AS OptionId, display_order AS DisplayOrder, proposed_at AS ProposedAt
-            FROM reschedule_options
-            WHERE proposal_id = @ProposalId
-            ORDER BY display_order
-            """,
-            new { ProposalId = proposal.Id },
-            transaction)).ToList();
-
-        var votes = (await connection.QueryAsync<RescheduleOptionVoteDto>(
-            """
-            SELECT rov.option_id AS OptionId, p.id AS PlayerId, p.display_name AS DisplayName, p.external_username AS TelegramUsername
-            FROM reschedule_option_votes rov
-            JOIN players p ON p.id = rov.player_id
-            WHERE rov.proposal_id = @ProposalId
-            ORDER BY rov.voted_at, p.display_name
-            """,
-            new { ProposalId = proposal.Id },
-            transaction)).ToList();
-
-        await transaction.CommitAsync(ct);
-
-        // 5. Re-render and update Discord vote message
         var (embed, actionRow) = DiscordRescheduleVotingRenderer.Render(
-            proposal.Title, proposal.CurrentScheduledAt, proposal.VotingDeadlineAt,
-            options, participants, votes);
+            result.Title!,
+            result.CurrentScheduledAt,
+            result.VotingDeadlineAt,
+            result.Options,
+            result.Participants,
+            result.Votes);
 
         var channelIdUlong = ulong.Parse(input.ChannelId);
         var messageIdUlong = ulong.Parse(input.MessageId);
@@ -123,9 +55,9 @@ public sealed class DiscordRescheduleVoteHandler(
         }
         catch (Exception ex)
         {
-            logger.LogWarning(ex, "Failed to update Discord vote message for proposal {ProposalId}", proposal.Id);
+            logger.LogWarning(ex, "Failed to update Discord vote message for proposal {ProposalId}", result.ProposalId);
         }
 
-        return "Ваш голос учтён. До дедлайна его можно изменить.";
+        return result.ReplyText!;
     }
 }

src/GmRelay.DiscordBot/Features/Sessions/DiscordRescheduleVotingDeadlineService.cs

@@ -152,7 +152,7 @@ public sealed class DiscordRescheduleVotingDeadlineService(
                 """
                 SELECT sp.session_id AS SessionId,
                        p.display_name AS DisplayName,
-                       COALESCE(p.external_username, p.telegram_username) AS TelegramUsername,
+                       p.external_username AS TelegramUsername,
                        sp.registration_status AS RegistrationStatus
                 FROM session_participants sp
                 JOIN players p ON p.id = sp.player_id

src/GmRelay.DiscordBot/Features/Sessions/DiscordSessionInteractionModule.cs

@@ -1,8 +1,10 @@
 using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.DiscordBot.Rendering;
 using GmRelay.Shared.Domain;
 using GmRelay.Shared.Features.Confirmation.HandleRsvp;
 using GmRelay.Shared.Features.Sessions.CreateSession;
 using GmRelay.Shared.Platform;
+using System.Collections;
 using System.Globalization;
 using NetCord;
 using NetCord.Rest;
@@ -14,6 +16,7 @@ public sealed class DiscordSessionInteractionModule(
     JoinSessionHandler joinSessionHandler,
     LeaveSessionHandler leaveSessionHandler,
     HandleRsvpHandler rsvpHandler,
+    DiscordDeleteSessionHandler deleteSessionHandler,
     DiscordRescheduleVoteHandler voteHandler,
     DiscordInteractionReplyCache interactionReplies,
     ILogger<DiscordSessionInteractionModule> logger) : ComponentInteractionModule<ButtonInteractionContext>
@@ -28,21 +31,22 @@ public sealed class DiscordSessionInteractionModule(
         }
 
         var input = CreateInput(parsedSessionId);
-        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+        await RespondAsync(InteractionCallback.DeferredModifyMessage);
+        SessionInteractionResult result;
         try
         {
-            await joinSessionHandler.HandleAsync(
-                DiscordSessionInteractionMapper.CreateJoinCommand(input),
+            result = await joinSessionHandler.HandleAsync(
+                DiscordSessionInteractionMapper.CreateJoinCommand(input) with { DeferScheduleUpdate = true },
                 CancellationToken.None);
         }
         catch (Exception ex)
         {
             logger.LogError(ex, "Failed to handle Discord join interaction for session {SessionId}", parsedSessionId);
-            await CompleteResponseAsync("Не удалось обработать кнопку.");
+            await FollowupEphemeralAsync("Не удалось обработать кнопку.");
             return;
         }
 
-        await CompleteWithStoredReplyAsync(input.InteractionId);
+        await CompleteScheduleUpdateResponseAsync(input.InteractionId, result);
     }
 
     [ComponentInteraction("leave_session")]
@@ -55,21 +59,56 @@ public sealed class DiscordSessionInteractionModule(
         }
 
         var input = CreateInput(parsedSessionId);
-        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+        await RespondAsync(InteractionCallback.DeferredModifyMessage);
+        SessionInteractionResult result;
         try
         {
-            await leaveSessionHandler.HandleAsync(
-                DiscordSessionInteractionMapper.CreateLeaveCommand(input),
+            result = await leaveSessionHandler.HandleAsync(
+                DiscordSessionInteractionMapper.CreateLeaveCommand(input) with { DeferScheduleUpdate = true },
                 CancellationToken.None);
         }
         catch (Exception ex)
         {
             logger.LogError(ex, "Failed to handle Discord leave interaction for session {SessionId}", parsedSessionId);
-            await CompleteResponseAsync("Не удалось обработать кнопку.");
+            await FollowupEphemeralAsync("Не удалось обработать кнопку.");
             return;
         }
 
-        await CompleteWithStoredReplyAsync(input.InteractionId);
+        await CompleteScheduleUpdateResponseAsync(input.InteractionId, result);
+    }
+
+    [ComponentInteraction("delete_session")]
+    public async Task DeleteAsync(string sessionId)
+    {
+        if (!Guid.TryParse(sessionId, out var parsedSessionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(parsedSessionId);
+        var member = Context.User as GuildInteractionUser;
+        var resolvedPermissions = member is null ? 0UL : (ulong)member.Permissions;
+
+        await RespondAsync(InteractionCallback.DeferredModifyMessage);
+        try
+        {
+            var result = await deleteSessionHandler.HandleAsync(
+                guildId: input.GuildId,
+                channelId: input.ChannelId,
+                userId: input.UserId,
+                resolvedPermissions: resolvedPermissions,
+                guildOwnerId: 0,
+                sessionId: parsedSessionId,
+                CancellationToken.None);
+
+            await CompleteDeleteResponseAsync(result);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord delete interaction for session {SessionId}", parsedSessionId);
+            await FollowupEphemeralAsync("Не удалось удалить сессию.");
+        }
     }
 
     [ComponentInteraction("rsvp")]
@@ -124,7 +163,7 @@ public sealed class DiscordSessionInteractionModule(
         catch (Exception ex)
         {
             logger.LogError(ex, "Failed to handle Discord RSVP interaction for session {SessionId}", parsedSessionId);
-            await CompleteResponseAsync("Не удалось обработать кнопку.");
+            await CompleteResponseAsync("Не удалось обработать кнопку.");
             return;
         }
 
@@ -168,7 +207,7 @@ public sealed class DiscordSessionInteractionModule(
 
     private DiscordSessionInteractionInput CreateInput(Guid sessionId)
     {
-        var guild = Context.Guild
+        var guildId = Context.Interaction.GuildId?.ToString(CultureInfo.InvariantCulture)
             ?? throw new InvalidOperationException("Session buttons can only be used in a guild.");
         var message = Context.Interaction.Message
             ?? throw new InvalidOperationException("Session button interaction must include a message.");
@@ -176,7 +215,7 @@ public sealed class DiscordSessionInteractionModule(
         return new DiscordSessionInteractionInput(
             SessionId: sessionId,
             InteractionId: Context.Interaction.Id.ToString(System.Globalization.CultureInfo.InvariantCulture),
-            GuildId: guild.Id.ToString(CultureInfo.InvariantCulture),
+            GuildId: guildId,
             ChannelId: Context.Channel.Id.ToString(CultureInfo.InvariantCulture),
             MessageId: message.Id.ToString(CultureInfo.InvariantCulture),
             UserId: Context.User.Id,
@@ -190,9 +229,85 @@ public sealed class DiscordSessionInteractionModule(
         await CompleteResponseAsync(reply?.Text ?? "Session updated.");
     }
 
+    private async Task CompleteScheduleUpdateResponseAsync(string interactionId, SessionInteractionResult result)
+    {
+        var updatedView = result.UpdatedView;
+        if (updatedView is not null && SourceMessageHasDeleteAction())
+        {
+            updatedView = DiscordListSessionsHandler.AddManagerActions(updatedView);
+        }
+
+        if (updatedView is not null)
+        {
+            var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(updatedView);
+            await ModifyResponseAsync(options =>
+            {
+                options.Embeds = embeds;
+                options.Components = actionRows;
+            });
+        }
+
+        var reply = interactionReplies.Take(interactionId);
+        await FollowupEphemeralAsync(reply?.Text ?? result.ReplyText);
+    }
+
+    private async Task CompleteDeleteResponseAsync(DiscordDeleteSessionResult result)
+    {
+        if (result.UpdatedView is not null)
+        {
+            var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(result.UpdatedView);
+            await ModifyResponseAsync(options =>
+            {
+                options.Embeds = embeds;
+                options.Components = actionRows;
+            });
+        }
+        else if (result.EmptyMessage is not null)
+        {
+            await ModifyResponseAsync(options =>
+            {
+                options.Content = result.EmptyMessage;
+                options.Embeds = [];
+                options.Components = [];
+            });
+        }
+
+        await FollowupEphemeralAsync(result.ReplyText);
+    }
+
     private Task CompleteResponseAsync(string text) =>
         ModifyResponseAsync(options => options.Content = text);
 
+    private Task FollowupEphemeralAsync(string text) =>
+        FollowupAsync(new InteractionMessageProperties()
+            .WithContent(text)
+            .WithFlags(MessageFlags.Ephemeral));
+
+    private bool SourceMessageHasDeleteAction() =>
+        Context.Interaction.Message?.Components.Any(ComponentContainsDeleteAction) == true;
+
+    private static bool ComponentContainsDeleteAction(object? component)
+    {
+        if (component is null)
+            return false;
+
+        if (component is IInteractiveComponent interactive
+            && interactive.CustomId.StartsWith("delete_session:", StringComparison.Ordinal))
+            return true;
+
+        var nestedComponents = component.GetType().GetProperty("Components")?.GetValue(component) as IEnumerable;
+        if (nestedComponents is null)
+            return false;
+
+        foreach (var nestedComponent in nestedComponents)
+        {
+            if (ComponentContainsDeleteAction(nestedComponent))
+                return true;
+        }
+
+        return false;
+    }
+
     private static InteractionCallbackProperties CreateEphemeralReply(string text) =>
         InteractionCallback.Message(
             new InteractionMessageProperties()

src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj

@@ -6,11 +6,14 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <UserSecretsId>dotnet-GmRelay.DiscordBot-issue-26</UserSecretsId>
+    <!-- DiscordBot uses vanilla Dapper in its own handlers; DAP005 requires AOT-enabled Dapper -->
+    <NoWarn>$(NoWarn);DAP005</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Aspire.Npgsql" Version="13.2.2" />
     <PackageReference Include="Dapper" Version="2.1.72" />
+    <PackageReference Include="Dapper.AOT" Version="1.0.48" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.5" />
     <PackageReference Include="NetCord.Hosting" Version="1.0.0-alpha.489" />
     <PackageReference Include="NetCord.Hosting.Services" Version="1.0.0-alpha.489" />

src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPlatformMessenger.cs

@@ -77,6 +77,38 @@ public sealed class DiscordPlatformMessenger : IPlatformMessenger
         await restClient.SendMessageAsync(GetChannelId(group), htmlText);
     }
 
+    public async Task SendGroupMessageAsync(PlatformGroup group, string htmlText, IReadOnlyList<PlatformMessageAction> actions, CancellationToken ct)
+    {
+        var rows = BuildActionRows(actions);
+        await restClient.SendMessageAsync(GetChannelId(group), new MessageProperties().WithContent(htmlText).WithComponents(rows));
+    }
+
+    public async Task UpdateGroupMessageAsync(PlatformMessageRef messageRef, string htmlText, IReadOnlyList<PlatformMessageAction> actions, CancellationToken ct)
+    {
+        var channelId = GetChannelId(new PlatformGroup(messageRef.Platform, messageRef.ExternalGroupId, string.Empty, messageRef.ExternalThreadId));
+        var messageId = ParseSnowflake(messageRef.ExternalMessageId);
+        var rows = BuildActionRows(actions);
+        await restClient.ModifyMessageAsync(channelId, messageId, options =>
+        {
+            options.Content = htmlText;
+            options.Components = rows;
+        });
+    }
+
+    public Task<PlatformMessageRef> CreateThreadAsync(PlatformGroup group, string title, CancellationToken ct)
+    {
+        // Discord thread creation is not implemented in this adapter
+        return Task.FromResult(new PlatformMessageRef(PlatformKind.Discord, group.ExternalGroupId, group.ExternalThreadId, string.Empty));
+    }
+
+    public Task DeleteThreadAsync(PlatformGroup group, CancellationToken ct) => Task.CompletedTask;
+
+    public async Task DeleteMessageAsync(PlatformMessageRef messageRef, CancellationToken ct)
+    {
+        var channelId = GetChannelId(new PlatformGroup(messageRef.Platform, messageRef.ExternalGroupId, string.Empty, messageRef.ExternalThreadId));
+        await restClient.DeleteMessageAsync(channelId, ParseSnowflake(messageRef.ExternalMessageId));
+    }
+
     public async Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct)
     {
         await SendDirectContentAsync(message.Recipient, message.HtmlText, ct);
@@ -98,17 +130,34 @@ public sealed class DiscordPlatformMessenger : IPlatformMessenger
         CancellationToken ct)
     {
         var channelId = GetChannelId(request.Group);
-        var message = await restClient.SendMessageAsync(
-            channelId,
-            new MessageProperties()
-                .WithEmbeds([BuildConfirmationEmbed(request)])
-                .WithComponents(BuildRsvpRows(request.SessionId, disabled: false)));
+        try
+        {
+            var message = await restClient.SendMessageAsync(
+                channelId,
+                new MessageProperties()
+                    .WithEmbeds([BuildConfirmationEmbed(request)])
+                    .WithComponents(BuildRsvpRows(request.SessionId, disabled: false)));
 
-        return new PlatformMessageRef(
-            PlatformKind.Discord,
-            request.Group.ExternalGroupId,
-            null,
-            message.Id.ToString(CultureInfo.InvariantCulture));
+            logger?.LogInformation(
+                "Confirmation request sent to Discord channel {ChannelId}, message id {MessageId}",
+                channelId,
+                message.Id);
+
+            return new PlatformMessageRef(
+                PlatformKind.Discord,
+                request.Group.ExternalGroupId,
+                null,
+                message.Id.ToString(CultureInfo.InvariantCulture));
+        }
+        catch (Exception ex)
+        {
+            logger?.LogError(
+                ex,
+                "Failed to send confirmation request to Discord channel {ChannelId} for session {SessionId}",
+                channelId,
+                request.SessionId);
+            throw;
+        }
     }
 
     public async Task UpdateConfirmationRequestAsync(PlatformRsvpMessageUpdate update, CancellationToken ct)
@@ -135,15 +184,32 @@ public sealed class DiscordPlatformMessenger : IPlatformMessenger
         CancellationToken ct)
     {
         var channelId = GetChannelId(notification.Group);
-        var message = await restClient.SendMessageAsync(
-            channelId,
-            new MessageProperties().WithEmbeds([BuildJoinLinkEmbed(notification)]));
+        try
+        {
+            var message = await restClient.SendMessageAsync(
+                channelId,
+                new MessageProperties().WithEmbeds([BuildJoinLinkEmbed(notification)]));
 
-        return new PlatformMessageRef(
-            PlatformKind.Discord,
-            notification.Group.ExternalGroupId,
-            null,
-            message.Id.ToString(CultureInfo.InvariantCulture));
+            logger?.LogInformation(
+                "Join link sent to Discord channel {ChannelId}, message id {MessageId}",
+                channelId,
+                message.Id);
+
+            return new PlatformMessageRef(
+                PlatformKind.Discord,
+                notification.Group.ExternalGroupId,
+                null,
+                message.Id.ToString(CultureInfo.InvariantCulture));
+        }
+        catch (Exception ex)
+        {
+            logger?.LogError(
+                ex,
+                "Failed to send join link to Discord channel {ChannelId} for session {SessionId}",
+                channelId,
+                notification.SessionId);
+            throw;
+        }
     }
 
     public async Task SendDirectSessionNotificationAsync(
@@ -272,14 +338,16 @@ public sealed class DiscordPlatformMessenger : IPlatformMessenger
             ? "—"
             : string.Join(", ", notification.ConfirmedPlayers.Select(p => Mention(p.User)));
 
-        return new EmbedProperties()
+        var embed = new EmbedProperties()
             .WithTitle($"Ссылка на игру: {notification.Title}")
             .WithDescription(
                 $"Время: **{notification.ScheduledAt.FormatMoscow()}** (МСК)\n" +
                 $"Ссылка: {notification.JoinLink}\n\n" +
                 $"Участники: {mentions}")
-            .WithUrl(notification.JoinLink)
             .WithColor(new Color(0x57F287));
+
+        var embedUrl = DiscordEmbedUrls.NormalizeHttpUrl(notification.JoinLink);
+        return embedUrl is null ? embed : embed.WithUrl(embedUrl);
     }
 
     private static IReadOnlyList<ActionRowProperties> BuildRsvpRows(Guid sessionId, bool disabled)
@@ -367,6 +435,30 @@ public sealed class DiscordPlatformMessenger : IPlatformMessenger
         return ParseSnowflake(channelId);
     }
 
+    private static IReadOnlyList<ActionRowProperties> BuildActionRows(IReadOnlyList<PlatformMessageAction> actions)
+    {
+        if (actions.Count == 0)
+        {
+            return [];
+        }
+
+        var rows = new List<ActionRowProperties>();
+        foreach (var chunk in actions.Chunk(5))
+        {
+            var row = new ActionRowProperties();
+            foreach (var action in chunk)
+            {
+                row.Add(new ButtonProperties(action.Key, action.Label, ButtonStyle.Secondary)
+                {
+                    CustomId = action.Payload
+                });
+            }
+            rows.Add(row);
+        }
+
+        return rows;
+    }
+
     private static ulong ParseSnowflake(string value) =>
         ulong.Parse(value, CultureInfo.InvariantCulture);
 }

src/GmRelay.DiscordBot/Program.cs

@@ -18,8 +18,10 @@ using Microsoft.Extensions.DependencyInjection;
 using NetCord;
 using NetCord.Gateway;
 using NetCord.Hosting.Gateway;
+using NetCord.Hosting.Services;
 using NetCord.Hosting.Services.ApplicationCommands;
 using NetCord.Hosting.Services.ComponentInteractions;
+using NetCord.Services.ApplicationCommands;
 using NetCord.Services.ComponentInteractions;
 using Npgsql;
 
@@ -34,6 +36,8 @@ discordOptions.Validate();
 
 builder.Services.AddSingleton(discordOptions);
 
+builder.Logging.AddConsole();
+
 builder.Services.AddSingleton<NpgsqlDataSource>(sp =>
 {
     var config = sp.GetRequiredService<IConfiguration>();
@@ -52,8 +56,10 @@ builder.Services.AddSingleton<NpgsqlDataSource>(sp =>
 
 builder.Services.AddSingleton<DiscordPermissionChecker>();
 builder.Services.AddSingleton<DiscordListSessionsHandler>();
+builder.Services.AddSingleton<DiscordDeleteSessionHandler>();
 builder.Services.AddSingleton<DiscordNewSessionHandler>();
 builder.Services.AddSingleton<DiscordRescheduleHandler>();
+builder.Services.AddSingleton<GmRelay.Shared.Features.Sessions.RescheduleSession.HandleRescheduleVoteHandler>();
 builder.Services.AddSingleton<DiscordRescheduleVoteHandler>();
 builder.Services.AddSingleton<IScheduleMessageUpdateLock, ScheduleMessageUpdateLock>();
 builder.Services.AddSingleton<JoinSessionHandler>();
@@ -82,12 +88,13 @@ builder.Services
         options.Token = discordOptions.Token;
         options.Intents = GatewayIntents.Guilds;
     })
-    .AddApplicationCommands()
+    .AddApplicationCommands<SlashCommandInteraction, SlashCommandContext>()
     .AddComponentInteractions<ButtonInteraction, ButtonInteractionContext>()
     .AddGatewayHandlers(typeof(Program).Assembly);
 
 var host = builder.Build();
 
 host.AddSlashCommand("ping", "Checks whether GM-Relay Discord is online.", () => "Pong!");
+host.AddModules(typeof(Program).Assembly);
 
 await host.RunAsync();

src/GmRelay.DiscordBot/Rendering/DiscordEmbedUrls.cs

@@ -0,0 +1,43 @@
+namespace GmRelay.DiscordBot.Rendering;
+
+public static class DiscordEmbedUrls
+{
+    public static string? NormalizeHttpUrl(string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value))
+            return null;
+
+        var candidate = value.Trim();
+        if (IsSupportedHttpUrl(candidate, out var normalized))
+            return normalized;
+
+        if (candidate.Contains("://", StringComparison.Ordinal))
+            return null;
+
+        return IsSupportedHttpUrl($"https://{candidate}", out normalized)
+            && HasPublicHost(normalized)
+                ? normalized
+                : null;
+    }
+
+    private static bool IsSupportedHttpUrl(string value, out string normalized)
+    {
+        normalized = string.Empty;
+
+        if (!Uri.TryCreate(value, UriKind.Absolute, out var uri))
+            return false;
+
+        if (!string.Equals(uri.Scheme, Uri.UriSchemeHttp, StringComparison.OrdinalIgnoreCase)
+            && !string.Equals(uri.Scheme, Uri.UriSchemeHttps, StringComparison.OrdinalIgnoreCase))
+        {
+            return false;
+        }
+
+        normalized = uri.ToString();
+        return true;
+    }
+
+    private static bool HasPublicHost(string value) =>
+        Uri.TryCreate(value, UriKind.Absolute, out var uri)
+        && uri.Host.Contains('.', StringComparison.Ordinal);
+}

src/GmRelay.DiscordBot/Rendering/DiscordSessionBatchRenderer.cs

@@ -70,9 +70,10 @@ public static class DiscordSessionBatchRenderer
                 .WithInline()
         };
 
-        if (!string.IsNullOrEmpty(session.JoinLink))
+        var embedUrl = DiscordEmbedUrls.NormalizeHttpUrl(session.JoinLink);
+        if (embedUrl is not null)
         {
-            embed = embed.WithUrl(session.JoinLink);
+            embed = embed.WithUrl(embedUrl);
         }
 
         embed = embed.WithColor(GetColor(session));

src/GmRelay.DiscordBot/packages.lock.json

@@ -28,6 +28,12 @@
         "resolved": "2.1.72",
         "contentHash": "ns4mGqQd9a/MhP8m6w556vVlZIa0/MfUu03zrxjZC/jlr1uVCsUac8bkdB+Fs98Llbd56rRSo1eZH5VVmeGZyw=="
       },
+      "Dapper.AOT": {
+        "type": "Direct",
+        "requested": "[1.0.48, )",
+        "resolved": "1.0.48",
+        "contentHash": "rsLM3yKr4g+YKKox9lhc8D+kz67P7Q9+xdyn1LmCsoYr1kYpJSm+Nt6slo5UrfUrcTiGJ57zUlyO8XUdV7G7iA=="
+      },
       "Microsoft.Extensions.Hosting": {
         "type": "Direct",
         "requested": "[10.0.5, )",

src/GmRelay.Shared/Features/Confirmation/HandleRsvp/HandleRsvpHandler.cs

@@ -56,8 +56,8 @@ public sealed class HandleRsvpHandler(
                 FROM session_participants sp
                 JOIN players p ON p.id = sp.player_id
                 WHERE sp.session_id = @SessionId
-                  AND COALESCE(p.platform, 'Telegram') = @Platform
-                  AND COALESCE(p.external_user_id, p.telegram_id::TEXT) = @ExternalUserId
+                  AND p.platform = @Platform
+                  AND p.external_user_id = @ExternalUserId
                   AND sp.is_gm = false
                   AND sp.registration_status = @Active
             )
@@ -90,8 +90,8 @@ public sealed class HandleRsvpHandler(
               AND  player_id = (
                     SELECT id
                     FROM players
-                    WHERE COALESCE(platform, 'Telegram') = @Platform
-                      AND COALESCE(external_user_id, telegram_id::TEXT) = @ExternalUserId
+                    WHERE platform = @Platform
+                      AND external_user_id = @ExternalUserId
                     LIMIT 1
               )
               AND  registration_status = @Active
@@ -265,10 +265,10 @@ public sealed class HandleRsvpHandler(
 
             var participants = (await connection.QueryAsync<ParticipantRsvpRow>(
                 """
-                SELECT COALESCE(p.platform, 'Telegram') AS Platform,
-                       COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                SELECT p.platform AS Platform,
+                       p.external_user_id AS ExternalUserId,
                        p.display_name AS DisplayName,
-                       COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                       p.external_username AS ExternalUsername,
                        sp.rsvp_status AS RsvpStatus,
                        sp.registration_status AS RegistrationStatus,
                        sp.is_gm AS IsGm
@@ -312,23 +312,13 @@ public sealed class HandleRsvpHandler(
         var rows = await connection.QueryAsync<RsvpRecipientRow>(
             """
             SELECT DISTINCT
-                   COALESCE(p.platform, 'Telegram') AS Platform,
-                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                   p.platform AS Platform,
+                   p.external_user_id AS ExternalUserId,
                    p.display_name AS DisplayName,
-                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername
+                   p.external_username AS ExternalUsername
             FROM group_managers gm
             JOIN players p ON p.id = gm.player_id
             WHERE gm.group_id = @GroupId
-            UNION
-            SELECT DISTINCT
-                   COALESCE(p.platform, 'Telegram') AS Platform,
-                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
-                   p.display_name AS DisplayName,
-                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername
-            FROM game_groups g
-            JOIN players p ON p.telegram_id = g.gm_telegram_id
-            WHERE g.id = @GroupId
-              AND g.gm_telegram_id IS NOT NULL
             """,
             new { GroupId = groupId },
             transaction);

src/GmRelay.Shared/Features/Confirmation/SendConfirmation/SendConfirmationHandler.cs

@@ -45,10 +45,10 @@ public sealed class SendConfirmationHandler(
                    s.title,
                    s.scheduled_at AS ScheduledAt,
                    s.group_id AS GroupId,
-                   COALESCE(g.platform, 'Telegram') AS Platform,
-                   COALESCE(g.external_group_id, g.telegram_chat_id::TEXT) AS ExternalGroupId,
+                   g.platform AS Platform,
+                   g.external_group_id AS ExternalGroupId,
                    g.name AS DisplayName,
-                   COALESCE(g.external_channel_id, g.telegram_chat_id::TEXT) AS ExternalChannelId,
+                   g.external_channel_id AS ExternalChannelId,
                    s.thread_id AS ThreadId,
                    s.notification_mode AS NotificationMode
             FROM sessions s
@@ -65,10 +65,10 @@ public sealed class SendConfirmationHandler(
 
         var participants = (await connection.QueryAsync<ConfirmationParticipantRow>(
             """
-            SELECT COALESCE(p.platform, 'Telegram') AS Platform,
-                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+            SELECT p.platform AS Platform,
+                   p.external_user_id AS ExternalUserId,
                    p.display_name AS DisplayName,
-                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                   p.external_username AS ExternalUsername,
                    sp.rsvp_status AS RsvpStatus,
                    sp.registration_status AS RegistrationStatus,
                    sp.is_gm AS IsGm

src/GmRelay.Shared/Features/Reminders/SendJoinLink/SendJoinLinkHandler.cs

@@ -47,10 +47,10 @@ public sealed class SendJoinLinkHandler(
                    s.title,
                    s.join_link AS JoinLink,
                    s.scheduled_at AS ScheduledAt,
-                   COALESCE(g.platform, 'Telegram') AS Platform,
-                   COALESCE(g.external_group_id, g.telegram_chat_id::TEXT) AS ExternalGroupId,
+                   g.platform AS Platform,
+                   g.external_group_id AS ExternalGroupId,
                    g.name AS DisplayName,
-                   COALESCE(g.external_channel_id, g.telegram_chat_id::TEXT) AS ExternalChannelId,
+                   g.external_channel_id AS ExternalChannelId,
                    s.thread_id AS ThreadId,
                    s.notification_mode AS NotificationMode
             FROM sessions s
@@ -58,14 +58,14 @@ public sealed class SendJoinLinkHandler(
             WHERE s.id = @SessionId
               AND s.status = @Confirmed
               AND (
-                    (COALESCE(g.platform, 'Telegram') = 'Telegram' AND s.link_message_id IS NULL)
+                    (g.platform = 'Telegram' AND s.link_message_id IS NULL)
                     OR (
-                        COALESCE(g.platform, 'Telegram') <> 'Telegram'
+                        g.platform <> 'Telegram'
                         AND NOT EXISTS (
                             SELECT 1
                             FROM platform_messages pm
                             WHERE pm.session_id = s.id
-                              AND pm.platform = COALESCE(g.platform, 'Telegram')
+                              AND pm.platform = g.platform
                               AND pm.purpose = 'join_link'
                         )
                     )
@@ -81,10 +81,10 @@ public sealed class SendJoinLinkHandler(
 
         var players = (await connection.QueryAsync<JoinLinkPlayerRow>(
             """
-            SELECT COALESCE(p.platform, 'Telegram') AS Platform,
-                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+            SELECT p.platform AS Platform,
+                   p.external_user_id AS ExternalUserId,
                    p.display_name AS DisplayName,
-                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                   p.external_username AS ExternalUsername,
                    sp.rsvp_status AS RsvpStatus,
                    sp.registration_status AS RegistrationStatus,
                    sp.is_gm AS IsGm

src/GmRelay.Shared/Features/Reminders/SendOneHourReminder/SendOneHourReminderHandler.cs

@@ -56,10 +56,10 @@ public sealed class SendOneHourReminderHandler(
 
         var recipients = (await connection.QueryAsync<OneHourReminderRecipientRow>(
             """
-            SELECT COALESCE(p.platform, 'Telegram') AS Platform,
-                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+            SELECT p.platform AS Platform,
+                   p.external_user_id AS ExternalUserId,
                    p.display_name AS DisplayName,
-                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername
+                   p.external_username AS ExternalUsername
             FROM session_participants sp
             JOIN players p ON p.id = sp.player_id
             WHERE sp.session_id = @SessionId

src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionCommand.cs

@@ -0,0 +1,12 @@
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Shared.Features.Sessions.CreateSession;
+
+public sealed record CreateSessionCommand(
+    PlatformUser User,
+    PlatformGroup Group,
+    string Title,
+    string Link,
+    IReadOnlyList<DateTimeOffset> ScheduledTimes,
+    int? MaxPlayers,
+    string? ImageReference);

src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionHandler.cs

@@ -0,0 +1,157 @@
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Sessions.CreateSession;
+
+internal sealed record SessionCreationGroupAccessDto(Guid GroupId, bool CanManage);
+
+public sealed class CreateSessionHandler(
+    NpgsqlDataSource dataSource)
+{
+    public async Task<CreateSessionResult> HandleAsync(CreateSessionCommand command, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        try
+        {
+            var platform = command.User.Platform.ToString();
+            var externalUserId = command.User.ExternalUserId;
+            var displayName = command.User.DisplayName;
+            var externalUsername = command.User.ExternalUsername;
+
+            await connection.ExecuteAsync(
+                """
+                INSERT INTO players (display_name, platform, external_user_id, external_username)
+                VALUES (@Name, @Platform, @ExternalId, @Username)
+                ON CONFLICT (platform, external_user_id)
+                WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
+                DO UPDATE
+                SET display_name = EXCLUDED.display_name,
+                    external_username = EXCLUDED.external_username;
+                """,
+                new { ExternalId = externalUserId, Name = displayName, Username = externalUsername },
+                transaction);
+
+            var existingGroup = await connection.QuerySingleOrDefaultAsync<SessionCreationGroupAccessDto>(
+                """
+                SELECT g.id AS GroupId,
+                       EXISTS (
+                           SELECT 1
+                           FROM group_managers gm
+                           JOIN players p ON p.id = gm.player_id
+                           WHERE gm.group_id = g.id
+                             AND p.platform = @Platform
+                             AND p.external_user_id = @ExternalGmId
+                       ) AS CanManage
+                FROM game_groups g
+                WHERE g.platform = @Platform
+                  AND g.external_group_id = @ExternalGroupId
+                """,
+                new { Platform = platform, ExternalGroupId = command.Group.ExternalGroupId, ExternalGmId = externalUserId },
+                transaction);
+
+            Guid groupId;
+            if (existingGroup is null)
+            {
+                groupId = await connection.ExecuteScalarAsync<Guid>(
+                    """
+                    INSERT INTO game_groups (name, platform, external_group_id, external_channel_id)
+                    VALUES (@ChatName, @Platform, @ExternalGroupId, @ExternalChannelId)
+                    RETURNING id;
+                    """,
+                    new
+                    {
+                        Platform = platform,
+                        ExternalGroupId = command.Group.ExternalGroupId,
+                        ExternalChannelId = command.Group.ExternalChannelId,
+                        ChatName = command.Group.DisplayName
+                    },
+                    transaction);
+
+                await connection.ExecuteAsync(
+                    """
+                    INSERT INTO group_managers (group_id, player_id, role)
+                    SELECT @GroupId, p.id, @OwnerRole
+                    FROM players p
+                    WHERE p.platform = @Platform
+                      AND p.external_user_id = @ExternalGmId
+                    ON CONFLICT (group_id, player_id) DO NOTHING
+                    """,
+                    new { GroupId = groupId, ExternalGmId = externalUserId, OwnerRole = GroupManagerRoleExtensions.OwnerValue },
+                    transaction);
+            }
+            else
+            {
+                if (!existingGroup.CanManage)
+                {
+                    await transaction.RollbackAsync(ct);
+                    return new CreateSessionResult(
+                        false,
+                        "⛔ Только owner или co-GM этой группы может создавать игровые сессии.",
+                        null,
+                        null,
+                        null,
+                        Array.Empty<string>());
+                }
+
+                groupId = existingGroup.GroupId;
+                await connection.ExecuteAsync(
+                    """
+                    UPDATE game_groups
+                    SET name = @ChatName
+                    WHERE id = @GroupId
+                    """,
+                    new { ChatName = command.Group.DisplayName, GroupId = groupId },
+                    transaction);
+            }
+
+            var batchId = Guid.NewGuid();
+            var sessions = new List<SessionBatchDto>();
+            var orderedTimes = command.ScheduledTimes.OrderBy(v => v).ToList();
+
+            foreach (var scheduledAt in orderedTimes)
+            {
+                var sessionId = await connection.ExecuteScalarAsync<Guid>(
+                    """
+                    INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, max_players)
+                    VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @MaxPlayers)
+                    RETURNING id;
+                    """,
+                    new
+                    {
+                        BatchId = batchId,
+                        GroupId = groupId,
+                        command.Title,
+                        Link = command.Link,
+                        ScheduledAt = scheduledAt,
+                        Status = SessionStatus.Planned,
+                        MaxPlayers = command.MaxPlayers
+                    },
+                    transaction);
+
+                sessions.Add(new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, command.MaxPlayers, command.Link));
+            }
+
+            await transaction.CommitAsync(ct);
+
+            var view = SessionBatchViewBuilder.Build(command.Title, sessions, Array.Empty<ParticipantBatchDto>());
+
+            return new CreateSessionResult(
+                true,
+                null,
+                view,
+                batchId,
+                groupId,
+                Array.Empty<string>());
+        }
+        catch
+        {
+            await transaction.RollbackAsync(ct);
+            throw;
+        }
+    }
+}

src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionResult.cs

@@ -0,0 +1,11 @@
+using GmRelay.Shared.Rendering;
+
+namespace GmRelay.Shared.Features.Sessions.CreateSession;
+
+public sealed record CreateSessionResult(
+    bool Success,
+    string? ErrorMessage,
+    SessionBatchViewModel? View,
+    Guid? BatchId,
+    Guid? GroupId,
+    IReadOnlyList<string> Warnings);

src/GmRelay.Shared/Features/Sessions/CreateSession/JoinSessionHandler.cs

@@ -13,7 +13,12 @@ public sealed record JoinSessionCommand(
     PlatformUser User,
     string InteractionId,
     PlatformGroup Group,
-    PlatformMessageRef ScheduleMessage);
+    PlatformMessageRef ScheduleMessage,
+    bool DeferScheduleUpdate = false);
+
+public sealed record SessionInteractionResult(
+    string ReplyText,
+    SessionBatchViewModel? UpdatedView = null);
 
 // DTOs for AOT compilation
 internal sealed record JoinSessionBatchDto(Guid BatchId, string Title, string Status, int? MaxPlayers);
@@ -24,7 +29,7 @@ public sealed class JoinSessionHandler(
     IScheduleMessageUpdateLock scheduleUpdateLock,
     ILogger<JoinSessionHandler> logger)
 {
-    public async Task HandleAsync(JoinSessionCommand command, CancellationToken ct)
+    public async Task<SessionInteractionResult> HandleAsync(JoinSessionCommand command, CancellationToken ct)
     {
         await using var updateLock = await scheduleUpdateLock.AcquireAsync(command.ScheduleMessage, ct);
         await using var connection = await dataSource.OpenConnectionAsync(ct);
@@ -35,30 +40,19 @@ public sealed class JoinSessionHandler(
         {
             // 1. Убеждаемся, что игрок есть в базе
             var platform = command.User.Platform.ToString();
-            var legacyTelegramId = command.User.Platform == PlatformKind.Telegram
-                ? long.Parse(command.User.ExternalUserId, CultureInfo.InvariantCulture)
-                : (long?)null;
-            var legacyTelegramUsername = command.User.Platform == PlatformKind.Telegram
-                ? command.User.ExternalUsername
-                : null;
 
             var playerId = await connection.ExecuteScalarAsync<Guid>(
-                @"INSERT INTO players (telegram_id, display_name, telegram_username, platform, external_user_id, external_username)
-                  VALUES (@LegacyTelegramId, @Name, @LegacyTelegramUsername, @Platform, @ExternalUserId, @ExternalUsername)
+                @"INSERT INTO players (display_name, platform, external_user_id, external_username)
+                  VALUES (@Name, @Platform, @ExternalUserId, @ExternalUsername)
                   ON CONFLICT (platform, external_user_id)
                   WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
                   DO UPDATE
                   SET display_name = EXCLUDED.display_name,
-                      telegram_username = COALESCE(EXCLUDED.telegram_username, players.telegram_username),
-                      platform = EXCLUDED.platform,
-                      external_user_id = EXCLUDED.external_user_id,
                       external_username = EXCLUDED.external_username
                   RETURNING id;",
                 new
                 {
-                    LegacyTelegramId = legacyTelegramId,
                     Name = command.User.DisplayName,
-                    LegacyTelegramUsername = legacyTelegramUsername,
                     Platform = platform,
                     command.User.ExternalUserId,
                     command.User.ExternalUsername
@@ -77,15 +71,13 @@ public sealed class JoinSessionHandler(
             if (batchInfo is null)
             {
                 await transaction.RollbackAsync(ct);
-                await AnswerAsync(command.InteractionId, "Сессия не найдена.", ct);
-                return;
+                return await AnswerAsync(command.InteractionId, "Сессия не найдена.", ct);
             }
 
             if (SessionStatus.IsCancelled(batchInfo.Status))
             {
                 await transaction.RollbackAsync(ct);
-                await AnswerAsync(command.InteractionId, "Сессия уже отменена.", ct);
-                return;
+                return await AnswerAsync(command.InteractionId, "Сессия уже отменена.", ct);
             }
 
             var existingRegistrationStatus = await connection.ExecuteScalarAsync<string?>(
@@ -105,8 +97,7 @@ public sealed class JoinSessionHandler(
                 var alreadyText = existingRegistrationStatus == ParticipantRegistrationStatus.Waitlisted
                     ? "Вы уже в листе ожидания!"
                     : "Вы уже записаны!";
-                await AnswerAsync(command.InteractionId, alreadyText, ct);
-                return;
+                return await AnswerAsync(command.InteractionId, alreadyText, ct);
             }
 
             var activeParticipants = await connection.ExecuteScalarAsync<int>(
@@ -139,8 +130,7 @@ public sealed class JoinSessionHandler(
             if (inserted == 0)
             {
                 await transaction.RollbackAsync(ct);
-                await AnswerAsync(command.InteractionId, "Вы уже записаны!", ct);
-                return;
+                return await AnswerAsync(command.InteractionId, "Вы уже записаны!", ct);
             }
 
             // Загружаем весь батч для перерисовки
@@ -154,7 +144,7 @@ public sealed class JoinSessionHandler(
             var batchParticipants = await connection.QueryAsync<ParticipantBatchDto>(
                 @"SELECT sp.session_id as SessionId,
                          p.display_name as DisplayName,
-                         COALESCE(p.external_username, p.telegram_username) as TelegramUsername,
+                         p.external_username as TelegramUsername,
                          sp.registration_status as RegistrationStatus
                   FROM session_participants sp
                   JOIN players p ON sp.player_id = p.id
@@ -168,17 +158,20 @@ public sealed class JoinSessionHandler(
 
             // 4. Перерисовываем сообщение
             var view = SessionBatchViewBuilder.Build(batchInfo.Title, batchSessions.ToList(), batchParticipants.ToList());
-            await messenger.UpdateScheduleAsync(
-                new PlatformScheduleMessage(
-                    command.Group,
-                    view,
-                    command.ScheduleMessage),
-                ct);
+            if (!command.DeferScheduleUpdate)
+            {
+                await messenger.UpdateScheduleAsync(
+                    new PlatformScheduleMessage(
+                        command.Group,
+                        view,
+                        command.ScheduleMessage),
+                    ct);
+            }
 
             var callbackText = registrationStatus == ParticipantRegistrationStatus.Waitlisted
                 ? "Основной состав заполнен. Вы добавлены в лист ожидания."
                 : "Вы успешно записаны!";
-            await AnswerAsync(command.InteractionId, callbackText, ct);
+            return await AnswerAsync(command.InteractionId, callbackText, ct, view);
         }
         catch (Exception ex)
         {
@@ -191,10 +184,17 @@ public sealed class JoinSessionHandler(
             var errorText = transactionCommitted
                 ? "Регистрация сохранена, но не удалось обновить сообщение расписания."
                 : "Произошла ошибка при регистрации.";
-            await AnswerAsync(command.InteractionId, errorText, ct);
+            return await AnswerAsync(command.InteractionId, errorText, ct);
         }
     }
 
-    private Task AnswerAsync(string interactionId, string text, CancellationToken ct) =>
-        messenger.AnswerInteractionAsync(new PlatformInteractionReply(interactionId, text), ct);
+    private async Task<SessionInteractionResult> AnswerAsync(
+        string interactionId,
+        string text,
+        CancellationToken ct,
+        SessionBatchViewModel? updatedView = null)
+    {
+        await messenger.AnswerInteractionAsync(new PlatformInteractionReply(interactionId, text), ct);
+        return new SessionInteractionResult(text, updatedView);
+    }
 }

src/GmRelay.Shared/Features/Sessions/CreateSession/LeaveSessionHandler.cs

@@ -12,7 +12,8 @@ public sealed record LeaveSessionCommand(
     PlatformUser User,
     string InteractionId,
     PlatformGroup Group,
-    PlatformMessageRef ScheduleMessage);
+    PlatformMessageRef ScheduleMessage,
+    bool DeferScheduleUpdate = false);
 
 internal sealed record LeaveSessionInfoDto(string Title, Guid BatchId, string Status, int? MaxPlayers);
 internal sealed record LeaveSessionParticipantDto(Guid ParticipantRowId, string DisplayName, string RegistrationStatus);
@@ -24,7 +25,7 @@ public sealed class LeaveSessionHandler(
     IScheduleMessageUpdateLock scheduleUpdateLock,
     ILogger<LeaveSessionHandler> logger)
 {
-    public async Task HandleAsync(LeaveSessionCommand command, CancellationToken ct)
+    public async Task<SessionInteractionResult> HandleAsync(LeaveSessionCommand command, CancellationToken ct)
     {
         await using var updateLock = await scheduleUpdateLock.AcquireAsync(command.ScheduleMessage, ct);
         await using var connection = await dataSource.OpenConnectionAsync(ct);
@@ -49,15 +50,13 @@ public sealed class LeaveSessionHandler(
             if (session is null)
             {
                 await transaction.RollbackAsync(ct);
-                await AnswerAsync(command.InteractionId, "Сессия не найдена.", ct);
-                return;
+                return await AnswerAsync(command.InteractionId, "Сессия не найдена.", ct);
             }
 
             if (SessionStatus.IsCancelled(session.Status))
             {
                 await transaction.RollbackAsync(ct);
-                await AnswerAsync(command.InteractionId, "Сессия уже отменена.", ct);
-                return;
+                return await AnswerAsync(command.InteractionId, "Сессия уже отменена.", ct);
             }
 
             var platform = command.User.Platform.ToString();
@@ -81,8 +80,7 @@ public sealed class LeaveSessionHandler(
             if (participant is null)
             {
                 await transaction.RollbackAsync(ct);
-                await AnswerAsync(command.InteractionId, "Вы не записаны на эту сессию.", ct);
-                return;
+                return await AnswerAsync(command.InteractionId, "Вы не записаны на эту сессию.", ct);
             }
 
             await connection.ExecuteAsync(
@@ -175,7 +173,7 @@ public sealed class LeaveSessionHandler(
                 """
                 SELECT sp.session_id AS SessionId,
                        p.display_name AS DisplayName,
-                       COALESCE(p.external_username, p.telegram_username) AS TelegramUsername,
+                       p.external_username AS TelegramUsername,
                        sp.registration_status AS RegistrationStatus
                 FROM session_participants sp
                 JOIN players p ON sp.player_id = p.id
@@ -190,12 +188,15 @@ public sealed class LeaveSessionHandler(
             transactionCommitted = true;
 
             var view = SessionBatchViewBuilder.Build(session.Title, batchSessions, batchParticipants);
-            await messenger.UpdateScheduleAsync(
-                new PlatformScheduleMessage(
-                    command.Group,
-                    view,
-                    command.ScheduleMessage),
-                ct);
+            if (!command.DeferScheduleUpdate)
+            {
+                await messenger.UpdateScheduleAsync(
+                    new PlatformScheduleMessage(
+                        command.Group,
+                        view,
+                        command.ScheduleMessage),
+                    ct);
+            }
 
             var callbackText = participant.RegistrationStatus == ParticipantRegistrationStatus.Waitlisted
                 ? "Вы удалены из листа ожидания."
@@ -203,7 +204,7 @@ public sealed class LeaveSessionHandler(
                     ? "Вы отписались от сессии."
                     : $"Вы отписались от сессии. Место получил(а) {promotedDisplayName}.";
 
-            await AnswerAsync(command.InteractionId, callbackText, ct);
+            return await AnswerAsync(command.InteractionId, callbackText, ct, view);
         }
         catch (Exception ex)
         {
@@ -216,10 +217,17 @@ public sealed class LeaveSessionHandler(
             var errorText = transactionCommitted
                 ? "Запись снята, но не удалось обновить сообщение расписания."
                 : "Произошла ошибка при отмене записи.";
-            await AnswerAsync(command.InteractionId, errorText, ct);
+            return await AnswerAsync(command.InteractionId, errorText, ct);
         }
     }
 
-    private Task AnswerAsync(string interactionId, string text, CancellationToken ct) =>
-        messenger.AnswerInteractionAsync(new PlatformInteractionReply(interactionId, text), ct);
+    private async Task<SessionInteractionResult> AnswerAsync(
+        string interactionId,
+        string text,
+        CancellationToken ct,
+        SessionBatchViewModel? updatedView = null)
+    {
+        await messenger.AnswerInteractionAsync(new PlatformInteractionReply(interactionId, text), ct);
+        return new SessionInteractionResult(text, updatedView);
+    }
 }

src/GmRelay.Shared/Features/Sessions/ExportCalendar/ExportCalendarCommand.cs

@@ -0,0 +1,7 @@
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Shared.Features.Sessions.ExportCalendar;
+
+public sealed record ExportCalendarCommand(
+    PlatformGroup Group,
+    PlatformUser User);

src/GmRelay.Shared/Features/Sessions/ExportCalendar/ExportCalendarHandler.cs

@@ -0,0 +1,111 @@
+using System.Text;
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Configuration;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Sessions.ExportCalendar;
+
+internal sealed record CalendarSessionDto(Guid Id, string Title, DateTime ScheduledAt);
+
+public sealed class ExportCalendarHandler(
+    NpgsqlDataSource dataSource,
+    IPlatformMessenger messenger,
+    IConfiguration configuration)
+{
+    public async Task HandleAsync(ExportCalendarCommand command, CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        var sessions = await connection.QueryAsync<CalendarSessionDto>(
+            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt"
+            + " FROM sessions s"
+            + " JOIN game_groups g ON s.group_id = g.id"
+            + " WHERE g.platform = @Platform"
+            + " AND g.external_group_id = @ExternalGroupId"
+            + " AND s.status = @Planned"
+            + " AND s.scheduled_at > NOW()"
+            + " ORDER BY s.scheduled_at ASC",
+            new { Platform = command.Group.Platform.ToString(), ExternalGroupId = command.Group.ExternalGroupId, Planned = SessionStatus.Planned });
+
+        var sessionsList = sessions.ToList();
+
+        if (sessionsList.Count == 0)
+        {
+            await messenger.SendGroupMessageAsync(
+                command.Group,
+                "📭 У этой группы нет запланированных сессий для экспорта.",
+                cancellationToken);
+            return;
+        }
+
+        var sb = new StringBuilder();
+        sb.AppendLine("BEGIN:VCALENDAR");
+        sb.AppendLine("VERSION:2.0");
+        sb.AppendLine("PRODID:-//GM-Relay//TTRPG Schedule//EN");
+
+        foreach (var s in sessionsList)
+        {
+            var dtStart = s.ScheduledAt.ToString("yyyyMMddTHHmmssZ");
+            var dtEnd = s.ScheduledAt.AddHours(4).ToString("yyyyMMddTHHmmssZ");
+
+            sb.AppendLine("BEGIN:VEVENT");
+            sb.AppendLine($"UID:{s.Id}@gmrelay");
+            sb.AppendLine($"DTSTAMP:{DateTime.UtcNow:yyyyMMddTHHmmssZ}");
+            sb.AppendLine($"DTSTART:{dtStart}");
+            sb.AppendLine($"DTEND:{dtEnd}");
+            sb.AppendLine($"SUMMARY:{s.Title}");
+            sb.AppendLine("END:VEVENT");
+        }
+
+        sb.AppendLine("END:VCALENDAR");
+
+        var bytes = Encoding.UTF8.GetBytes(sb.ToString());
+
+        // Create calendar subscription
+        string? subscriptionUrl = null;
+        var baseUrl = configuration["Web:BaseUrl"];
+        var senderId = command.User.ExternalUserId;
+        if (!string.IsNullOrWhiteSpace(baseUrl) && !string.IsNullOrWhiteSpace(senderId))
+        {
+            try
+            {
+                var token = Guid.NewGuid().ToString("N");
+                var groupId = await connection.QueryFirstOrDefaultAsync<Guid?>(
+                    @"SELECT id FROM game_groups WHERE platform = @Platform AND external_group_id = @ExternalGroupId",
+                    new { Platform = command.Group.Platform.ToString(), ExternalGroupId = command.Group.ExternalGroupId });
+
+                await connection.ExecuteAsync(
+                    @"INSERT INTO calendar_subscriptions (id, token, user_platform, user_external_id, group_id, filter_type, created_at, expires_at)
+                      VALUES (gen_random_uuid(), @token, @userPlatform, @userExternalId, @groupId, @filterType, now(), NULL)",
+                    new { token, userPlatform = command.Group.Platform.ToString(), userExternalId = senderId, groupId, filterType = (int)CalendarSubscriptionFilter.SpecificGroup });
+
+                subscriptionUrl = $"{baseUrl.TrimEnd('/')}/calendar/{token}.ics";
+            }
+            catch
+            {
+                // Non-critical: if subscription creation fails, still send the file
+            }
+        }
+
+        var actions = subscriptionUrl is not null
+            ? new[]
+            {
+                new PlatformMessageAction(
+                    "calendar-subscription",
+                    "🔗 Подписаться на календарь",
+                    subscriptionUrl)
+            }
+            : Array.Empty<PlatformMessageAction>();
+
+        await messenger.SendCalendarFileAsync(
+            new PlatformCalendarFile(
+                command.Group,
+                "schedule.ics",
+                bytes,
+                "📅 <b>Ваш календарь игр!</b>\nОткройте файл на устройстве, чтобы добавить события в свой календарь.",
+                actions),
+            cancellationToken);
+    }
+}

src/GmRelay.Shared/Features/Sessions/ListSessions/DeleteSessionHandler.cs

@@ -0,0 +1,91 @@
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Logging;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Sessions.ListSessions;
+
+internal sealed record DeleteSessionInfoDto(
+    string Title,
+    Guid BatchId,
+    Guid GroupId,
+    bool CanManage,
+    int? ThreadId,
+    bool TopicCreatedByBot);
+
+public sealed record DeleteSessionResult(
+    bool Success,
+    string? ReplyText,
+    string? Title,
+    Guid? GroupId,
+    int? ThreadId,
+    bool TopicCreatedByBot,
+    int RemainingInTopic);
+
+public sealed class DeleteSessionHandler(
+    NpgsqlDataSource dataSource)
+{
+    public async Task<DeleteSessionResult> HandleAsync(DeleteSessionCommand command, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        // 1. Fetch session and verify group manager.
+        var session = await connection.QuerySingleOrDefaultAsync<DeleteSessionInfoDto>(
+            """
+            SELECT s.title AS Title,
+                   s.batch_id AS BatchId,
+                   s.group_id AS GroupId,
+                   s.thread_id AS ThreadId,
+                   s.topic_created_by_bot AS TopicCreatedByBot,
+                   EXISTS (
+                       SELECT 1
+                       FROM group_managers gm
+                       JOIN players p ON p.id = gm.player_id
+                       WHERE gm.group_id = s.group_id
+                         AND p.platform = @Platform
+                       AND p.external_user_id = @ExternalUserId
+                   ) AS CanManage
+            FROM sessions s
+            WHERE s.id = @SessionId
+            """,
+            new { command.SessionId, Platform = command.User.Platform.ToString(), ExternalUserId = command.User.ExternalUserId }, transaction);
+
+        if (session == null)
+        {
+            return new DeleteSessionResult(false, "Сессия не найдена.", null, null, null, false, 0);
+        }
+
+        if (!session.CanManage)
+        {
+            return new DeleteSessionResult(false, "Только owner или co-GM может удалять сессию.", null, null, null, false, 0);
+        }
+
+        // 2. Delete session
+        await connection.ExecuteAsync("DELETE FROM sessions WHERE id = @Id", new { Id = command.SessionId }, transaction);
+
+        var remainingInTopic = session.ThreadId.HasValue
+            ? await connection.ExecuteScalarAsync<int>(
+                """
+                SELECT COUNT(*)
+                FROM sessions
+                WHERE group_id = @GroupId
+                  AND thread_id = @ThreadId
+                """,
+                new { session.GroupId, ThreadId = session.ThreadId.Value },
+                transaction)
+            : 0;
+
+        await transaction.CommitAsync(ct);
+
+        return new DeleteSessionResult(
+            true,
+            "Сессия удалена!",
+            session.Title,
+            session.GroupId,
+            session.ThreadId,
+            session.TopicCreatedByBot,
+            remainingInTopic);
+    }
+}

src/GmRelay.Shared/Features/Sessions/ListSessions/ListSessionsCommand.cs

@@ -0,0 +1,13 @@
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Shared.Features.Sessions.ListSessions;
+
+public sealed record ListSessionsCommand(
+    PlatformGroup Group,
+    PlatformUser User);
+
+public sealed record DeleteSessionCommand(
+    Guid SessionId,
+    PlatformUser User,
+    PlatformGroup Group,
+    PlatformMessageRef ScheduleMessage);

src/GmRelay.Shared/Features/Sessions/ListSessions/ListSessionsHandler.cs

@@ -0,0 +1,57 @@
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Sessions.ListSessions;
+
+public sealed record SessionListItemDto(Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers, int PlayerCount, int WaitlistCount, bool CanManage);
+
+public sealed record SessionListResult(
+    IReadOnlyList<SessionListItemDto> Sessions,
+    bool CanManage);
+
+public sealed class ListSessionsHandler(
+    NpgsqlDataSource dataSource)
+{
+    public async Task<SessionListResult> HandleAsync(ListSessionsCommand command, CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        var sessions = await connection.QueryAsync<SessionListItemDto>(
+            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt, s.status as Status, s.max_players as MaxPlayers,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Active) as PlayerCount,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted) as WaitlistCount,
+                     EXISTS (
+                         SELECT 1
+                         FROM group_managers gm
+                         JOIN players manager_player ON manager_player.id = gm.player_id
+                         WHERE gm.group_id = s.group_id
+                           AND manager_player.platform = @Platform
+                           AND manager_player.external_user_id = @ExternalUserId
+                     ) AS CanManage
+              FROM sessions s
+              JOIN game_groups g ON s.group_id = g.id
+              LEFT JOIN session_participants sp ON s.id = sp.session_id
+              WHERE g.platform = @Platform
+                AND g.external_group_id = @ExternalGroupId
+                AND s.status != @Cancelled
+                AND s.scheduled_at > NOW()
+              GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players, s.group_id
+              ORDER BY s.scheduled_at ASC",
+            new
+            {
+                Platform = command.Group.Platform.ToString(),
+                ExternalGroupId = command.Group.ExternalGroupId,
+                ExternalUserId = command.User.ExternalUserId,
+                Cancelled = SessionStatus.Cancelled,
+                Active = ParticipantRegistrationStatus.Active,
+                Waitlisted = ParticipantRegistrationStatus.Waitlisted
+            });
+
+        var sessionsList = sessions.ToList();
+        var canManage = sessionsList.Count > 0 && sessionsList.First().CanManage;
+
+        return new SessionListResult(sessionsList, canManage);
+    }
+}

src/GmRelay.Shared/Features/Sessions/RescheduleSession/AwaitingProposalDto.cs

@@ -0,0 +1,12 @@
+namespace GmRelay.Shared.Features.Sessions.RescheduleSession;
+
+internal sealed record AwaitingProposalDto(
+    Guid Id,
+    Guid SessionId,
+    string Title,
+    DateTime CurrentScheduledAt,
+    Guid BatchId,
+    int? BatchMessageId,
+    string ExternalGroupId,
+    int? ThreadId,
+    string NotificationMode);

src/GmRelay.Shared/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputCommand.cs

@@ -0,0 +1,15 @@
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Shared.Features.Sessions.RescheduleSession;
+
+public sealed record HandleRescheduleTimeInputCommand(
+    PlatformUser User,
+    PlatformGroup Group,
+    string Text);
+
+public sealed record HandleRescheduleVoteCommand(
+    Guid OptionId,
+    PlatformUser User,
+    PlatformGroup Group,
+    string InteractionId,
+    PlatformMessageRef ScheduleMessage);

src/GmRelay.Shared/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs

@@ -0,0 +1,181 @@
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Sessions.RescheduleSession;
+
+public sealed class HandleRescheduleTimeInputHandler(
+    NpgsqlDataSource dataSource)
+{
+    public async Task<HandleRescheduleTimeInputResult> HandleAsync(
+        HandleRescheduleTimeInputCommand command, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+        var platform = command.User.Platform.ToString();
+        var externalGmId = command.User.ExternalUserId;
+        var externalGroupId = command.Group.ExternalGroupId;
+
+        var proposal = await connection.QuerySingleOrDefaultAsync<AwaitingProposalDto>(
+            """
+            SELECT rp.id AS Id, rp.session_id AS SessionId, s.title AS Title, s.scheduled_at AS CurrentScheduledAt,
+                   s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
+                   g.external_group_id AS ExternalGroupId,
+                   s.thread_id AS ThreadId,
+                   s.notification_mode AS NotificationMode
+            FROM reschedule_proposals rp
+            JOIN sessions s ON s.id = rp.session_id
+            JOIN game_groups g ON g.id = s.group_id
+            WHERE rp.proposed_by_external_user_id = @ExternalGmId
+              AND rp.status = 'AwaitingTime'
+              AND g.platform = @Platform
+              AND g.external_group_id = @ExternalGroupId
+              AND EXISTS (
+                  SELECT 1
+                  FROM group_managers gm
+                  JOIN players manager_player ON manager_player.id = gm.player_id
+                  WHERE gm.group_id = s.group_id
+                    AND manager_player.platform = @Platform
+                    AND manager_player.external_user_id = @ExternalGmId
+              )
+            ORDER BY rp.created_at DESC
+            LIMIT 1
+            """,
+            new { ExternalGmId = externalGmId, Platform = platform, ExternalGroupId = externalGroupId });
+
+        if (proposal is null)
+            return new HandleRescheduleTimeInputResult(false, false, null, null, null, null, [], [], [], null, default, null);
+
+        if (!RescheduleVotingInput.TryParse(command.Text, DateTimeOffset.UtcNow, out var votingInput, out var parseError))
+        {
+            return new HandleRescheduleTimeInputResult(
+                true, false, parseError, null, null, null, [], [], [], proposal.Title, proposal.CurrentScheduledAt, null);
+        }
+
+        var participants = (await connection.QueryAsync<VoteParticipantDto>(
+            """
+            SELECT p.id AS PlayerId,
+                   p.display_name AS DisplayName,
+                   p.external_username AS TelegramUsername,
+                   p.external_user_id::BIGINT AS TelegramId
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId
+              AND sp.is_gm = false
+              AND sp.registration_status = @Active
+            """,
+            new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active })).ToList();
+
+        if (participants.Count == 0)
+        {
+            var newTime = votingInput.Options[0];
+            var view = await RescheduleImmediatelyAsync(connection, proposal, newTime, ct);
+            var replyText =
+                $"""✅ Сессия «{proposal.Title}» перенесена!\n\n📅 Новое время: <b>{newTime.ToOffset(TimeSpan.FromHours(3)).ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"))}</b> (МСК)\n\n<i>Участников нет — голосование не требуется.</i>""";
+            return new HandleRescheduleTimeInputResult(
+                true, true, replyText, view, null, null, [], [], [], proposal.Title, proposal.CurrentScheduledAt, proposal.BatchMessageId);
+        }
+
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+        var options = votingInput.Options
+            .Select((proposedAt, index) => new RescheduleOptionDto(
+                Guid.NewGuid(),
+                index + 1,
+                proposedAt))
+            .ToList();
+
+        await connection.ExecuteAsync(
+            """
+            UPDATE reschedule_proposals
+            SET voting_deadline_at = @Deadline, status = 'Voting', vote_chat_id = @VoteChatId
+            WHERE id = @Id
+            """,
+            new { votingInput.Deadline, VoteChatId = externalGroupId, Id = proposal.Id },
+            transaction);
+
+        foreach (var option in options)
+        {
+            await connection.ExecuteAsync(
+                """
+                INSERT INTO reschedule_options (id, proposal_id, proposed_at, display_order)
+                VALUES (@OptionId, @ProposalId, @ProposedAt, @DisplayOrder)
+                """,
+                new
+                {
+                    option.OptionId,
+                    ProposalId = proposal.Id,
+                    option.ProposedAt,
+                    option.DisplayOrder
+                },
+                transaction);
+        }
+
+        await transaction.CommitAsync(ct);
+
+        return new HandleRescheduleTimeInputResult(
+            true,
+            false,
+            null,
+            null,
+            proposal.Id,
+            votingInput.Deadline,
+            options,
+            participants,
+            [],
+            proposal.Title,
+            proposal.CurrentScheduledAt,
+            null);
+    }
+
+    private static async Task<SessionBatchViewModel?> RescheduleImmediatelyAsync(
+        NpgsqlConnection connection,
+        AwaitingProposalDto proposal,
+        DateTimeOffset newTime,
+        CancellationToken ct)
+    {
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        await connection.ExecuteAsync(
+            """
+            UPDATE sessions
+            SET scheduled_at = @NewTime,
+                status = @Status,
+                confirmation_message_id = NULL,
+                confirmation_sent_at = NULL,
+                one_hour_reminder_processed_at = NULL,
+                updated_at = now()
+            WHERE id = @SessionId
+            """,
+            new { NewTime = newTime, proposal.SessionId, Status = SessionStatus.Planned },
+            transaction);
+
+        await connection.ExecuteAsync(
+            "UPDATE reschedule_proposals SET proposed_at = @NewTime, status = 'Approved' WHERE id = @Id",
+            new { NewTime = newTime, Id = proposal.Id },
+            transaction);
+
+        await transaction.CommitAsync(ct);
+
+        var batchSessions = (await connection.QueryAsync<SessionBatchDto>(
+            "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers, join_link AS JoinLink FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
+            new { proposal.BatchId })).ToList();
+
+        var batchParticipants = (await connection.QueryAsync<ParticipantBatchDto>(
+            """
+            SELECT sp.session_id AS SessionId,
+                   p.display_name AS DisplayName,
+                   p.external_username AS TelegramUsername,
+                   sp.registration_status AS RegistrationStatus
+            FROM session_participants sp
+            JOIN players p ON sp.player_id = p.id
+            JOIN sessions s ON sp.session_id = s.id
+            WHERE s.batch_id = @BatchId AND sp.is_gm = false
+            ORDER BY sp.registration_status ASC, sp.created_at ASC, sp.responded_at ASC, p.created_at ASC
+            """,
+            new { proposal.BatchId })).ToList();
+
+        return SessionBatchViewBuilder.Build(proposal.Title, batchSessions, batchParticipants);
+    }
+}

src/GmRelay.Shared/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputResult.cs

@@ -0,0 +1,17 @@
+using GmRelay.Shared.Rendering;
+
+namespace GmRelay.Shared.Features.Sessions.RescheduleSession;
+
+public sealed record HandleRescheduleTimeInputResult(
+    bool Handled,
+    bool IsRescheduledImmediately,
+    string? ReplyText,
+    SessionBatchViewModel? UpdatedView,
+    Guid? ProposalId,
+    DateTimeOffset? VotingDeadlineAt,
+    IReadOnlyList<RescheduleOptionDto> Options,
+    IReadOnlyList<VoteParticipantDto> Participants,
+    IReadOnlyList<RescheduleOptionVoteDto> Votes,
+    string? Title,
+    DateTime CurrentScheduledAt,
+    int? BatchMessageId);

src/GmRelay.Shared/Features/Sessions/RescheduleSession/HandleRescheduleVoteHandler.cs

@@ -0,0 +1,156 @@
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Sessions.RescheduleSession;
+
+public sealed class HandleRescheduleVoteHandler(
+    NpgsqlDataSource dataSource)
+{
+    public async Task<HandleRescheduleVoteResult> HandleAsync(HandleRescheduleVoteCommand command, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        var proposal = await connection.QuerySingleOrDefaultAsync<VoteProposalDto>(
+            """
+            SELECT rp.id AS Id,
+                   rp.session_id AS SessionId,
+                   rp.voting_deadline_at AS VotingDeadlineAt,
+                   s.title AS Title,
+                   s.scheduled_at AS CurrentScheduledAt
+            FROM reschedule_options ro
+            JOIN reschedule_proposals rp ON rp.id = ro.proposal_id
+            JOIN sessions s ON s.id = rp.session_id
+            WHERE ro.id = @OptionId AND rp.status = 'Voting'
+            """,
+            new { command.OptionId },
+            transaction);
+
+        if (proposal is null)
+        {
+            return new HandleRescheduleVoteResult(
+                false,
+                "Голосование уже завершено или не найдено.",
+                null, null, null, default, default,
+                Array.Empty<VoteParticipantDto>(),
+                Array.Empty<RescheduleOptionDto>(),
+                Array.Empty<RescheduleOptionVoteDto>());
+        }
+
+        if (proposal.VotingDeadlineAt <= DateTimeOffset.UtcNow)
+        {
+            return new HandleRescheduleVoteResult(
+                false,
+                "Дедлайн уже прошёл. Результаты скоро будут применены.",
+                null, null, null, default, default,
+                Array.Empty<VoteParticipantDto>(),
+                Array.Empty<RescheduleOptionDto>(),
+                Array.Empty<RescheduleOptionVoteDto>());
+        }
+
+        var playerId = await connection.ExecuteScalarAsync<Guid?>(
+            """
+            SELECT p.id
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId
+              AND p.platform = @Platform
+              AND p.external_user_id = @ExternalUserId
+              AND sp.is_gm = false
+              AND sp.registration_status = @Active
+            """,
+            new
+            {
+                proposal.SessionId,
+                Platform = command.User.Platform.ToString(),
+                ExternalUserId = command.User.ExternalUserId,
+                Active = ParticipantRegistrationStatus.Active
+            },
+            transaction);
+
+        if (playerId is null)
+        {
+            return new HandleRescheduleVoteResult(
+                false,
+                "Вы не являетесь участником этой сессии.",
+                null, null, null, default, default,
+                Array.Empty<VoteParticipantDto>(),
+                Array.Empty<RescheduleOptionDto>(),
+                Array.Empty<RescheduleOptionVoteDto>());
+        }
+
+        await connection.ExecuteAsync(
+            """
+            INSERT INTO reschedule_option_votes (proposal_id, player_id, option_id)
+            VALUES (@ProposalId, @PlayerId, @OptionId)
+            ON CONFLICT (proposal_id, player_id) DO UPDATE
+            SET option_id = EXCLUDED.option_id,
+                voted_at = now()
+            """,
+            new
+            {
+                ProposalId = proposal.Id,
+                PlayerId = playerId.Value,
+                command.OptionId
+            },
+            transaction);
+
+        var participants = (await connection.QueryAsync<VoteParticipantDto>(
+            """
+            SELECT p.id AS PlayerId,
+                   p.display_name AS DisplayName,
+                   p.external_username AS TelegramUsername,
+                   p.external_user_id AS TelegramId
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId
+              AND sp.is_gm = false
+              AND sp.registration_status = @Active
+            ORDER BY p.display_name
+            """,
+            new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
+            transaction)).ToList();
+
+        var options = (await connection.QueryAsync<RescheduleOptionDto>(
+            """
+            SELECT id AS OptionId,
+                   display_order AS DisplayOrder,
+                   proposed_at AS ProposedAt
+            FROM reschedule_options
+            WHERE proposal_id = @ProposalId
+            ORDER BY display_order
+            """,
+            new { ProposalId = proposal.Id },
+            transaction)).ToList();
+
+        var votes = (await connection.QueryAsync<RescheduleOptionVoteDto>(
+            """
+            SELECT rov.option_id AS OptionId,
+                   p.id AS PlayerId,
+                   p.display_name AS DisplayName,
+                   p.external_username AS TelegramUsername
+            FROM reschedule_option_votes rov
+            JOIN players p ON p.id = rov.player_id
+            WHERE rov.proposal_id = @ProposalId
+            ORDER BY rov.voted_at, p.display_name
+            """,
+            new { ProposalId = proposal.Id },
+            transaction)).ToList();
+
+        await transaction.CommitAsync(ct);
+
+        return new HandleRescheduleVoteResult(
+            true,
+            "Ваш голос учтён. До дедлайна его можно изменить.",
+            proposal.Id,
+            proposal.SessionId,
+            proposal.Title,
+            proposal.CurrentScheduledAt,
+            proposal.VotingDeadlineAt,
+            participants,
+            options,
+            votes);
+    }
+}

src/GmRelay.Shared/Features/Sessions/RescheduleSession/HandleRescheduleVoteResult.cs

@@ -0,0 +1,15 @@
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+
+namespace GmRelay.Shared.Features.Sessions.RescheduleSession;
+
+public sealed record HandleRescheduleVoteResult(
+    bool Success,
+    string? ReplyText,
+    Guid? ProposalId,
+    Guid? SessionId,
+    string? Title,
+    DateTime CurrentScheduledAt,
+    DateTimeOffset VotingDeadlineAt,
+    IReadOnlyList<VoteParticipantDto> Participants,
+    IReadOnlyList<RescheduleOptionDto> Options,
+    IReadOnlyList<RescheduleOptionVoteDto> Votes);

src/GmRelay.Shared/Features/Sessions/RescheduleSession/RescheduleVotingFinalizer.cs

@@ -78,8 +78,8 @@ public sealed class RescheduleVotingFinalizer(
             """
             SELECT p.id AS PlayerId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   p.telegram_id AS TelegramId
+                   p.external_username AS TelegramUsername,
+                   p.external_user_id::BIGINT AS TelegramId
             FROM session_participants sp
             JOIN players p ON p.id = sp.player_id
             WHERE sp.session_id = @SessionId
@@ -107,7 +107,7 @@ public sealed class RescheduleVotingFinalizer(
             SELECT rov.option_id AS OptionId,
                    p.id AS PlayerId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername
+                   p.external_username AS TelegramUsername
             FROM reschedule_option_votes rov
             JOIN players p ON p.id = rov.player_id
             WHERE rov.proposal_id = @ProposalId

src/GmRelay.Shared/Infrastructure/Scheduling/SessionSchedulerService.cs

@@ -1,3 +1,4 @@
+using System.Collections.Concurrent;
 using GmRelay.Shared.Features.Confirmation.SendConfirmation;
 using GmRelay.Shared.Features.Reminders.SendJoinLink;
 using GmRelay.Shared.Features.Reminders.SendOneHourReminder;
@@ -20,6 +21,11 @@ public sealed class SessionSchedulerService(
     ILogger<SessionSchedulerService> logger) : BackgroundService
 {
     private static readonly TimeSpan TickInterval = TimeSpan.FromMinutes(1);
+    private static readonly TimeSpan BackoffDuration = TimeSpan.FromMinutes(15);
+
+    private readonly ConcurrentDictionary<Guid, DateTimeOffset> _confirmationBackoff = new();
+    private readonly ConcurrentDictionary<Guid, DateTimeOffset> _oneHourBackoff = new();
+    private readonly ConcurrentDictionary<Guid, DateTimeOffset> _joinLinkBackoff = new();
 
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
     {
@@ -71,14 +77,30 @@ public sealed class SessionSchedulerService(
 
         foreach (var sessionId in sessionIds)
         {
+            if (_confirmationBackoff.TryGetValue(sessionId, out var backoffUntil) && backoffUntil > now)
+            {
+                logger.LogDebug(
+                    "Skipping confirmation for session {SessionId} until {Backoff}",
+                    sessionId,
+                    backoffUntil);
+                continue;
+            }
+
             try
             {
                 await confirmationHandler.HandleAsync(sessionId, ct);
+                _confirmationBackoff.TryRemove(sessionId, out _);
                 logger.LogInformation("Confirmation sent for session {SessionId}", sessionId);
             }
             catch (Exception ex)
             {
-                logger.LogError(ex, "Failed to send confirmation for session {SessionId}", sessionId);
+                var nextAttempt = now.Add(BackoffDuration);
+                _confirmationBackoff[sessionId] = nextAttempt;
+                logger.LogError(
+                    ex,
+                    "Failed to send confirmation for session {SessionId}, backing off until {Backoff}",
+                    sessionId,
+                    nextAttempt);
             }
         }
     }
@@ -98,14 +120,30 @@ public sealed class SessionSchedulerService(
 
         foreach (var sessionId in sessionIds)
         {
+            if (_oneHourBackoff.TryGetValue(sessionId, out var backoffUntil) && backoffUntil > now)
+            {
+                logger.LogDebug(
+                    "Skipping one-hour reminder for session {SessionId} until {Backoff}",
+                    sessionId,
+                    backoffUntil);
+                continue;
+            }
+
             try
             {
                 await oneHourReminderHandler.HandleAsync(sessionId, ct);
+                _oneHourBackoff.TryRemove(sessionId, out _);
                 logger.LogInformation("One-hour reminder processed for session {SessionId}", sessionId);
             }
             catch (Exception ex)
             {
-                logger.LogError(ex, "Failed to process one-hour reminder for session {SessionId}", sessionId);
+                var nextAttempt = now.Add(BackoffDuration);
+                _oneHourBackoff[sessionId] = nextAttempt;
+                logger.LogError(
+                    ex,
+                    "Failed to process one-hour reminder for session {SessionId}, backing off until {Backoff}",
+                    sessionId,
+                    nextAttempt);
             }
         }
     }
@@ -125,14 +163,30 @@ public sealed class SessionSchedulerService(
 
         foreach (var sessionId in sessionIds)
         {
+            if (_joinLinkBackoff.TryGetValue(sessionId, out var backoffUntil) && backoffUntil > now)
+            {
+                logger.LogDebug(
+                    "Skipping join link for session {SessionId} until {Backoff}",
+                    sessionId,
+                    backoffUntil);
+                continue;
+            }
+
             try
             {
                 await joinLinkHandler.HandleAsync(sessionId, ct);
+                _joinLinkBackoff.TryRemove(sessionId, out _);
                 logger.LogInformation("Join link sent for session {SessionId}", sessionId);
             }
             catch (Exception ex)
             {
-                logger.LogError(ex, "Failed to send join link for session {SessionId}", sessionId);
+                var nextAttempt = now.Add(BackoffDuration);
+                _joinLinkBackoff[sessionId] = nextAttempt;
+                logger.LogError(
+                    ex,
+                    "Failed to send join link for session {SessionId}, backing off until {Backoff}",
+                    sessionId,
+                    nextAttempt);
             }
         }
     }

src/GmRelay.Shared/Platform/IPlatformMessenger.cs

@@ -2,7 +2,23 @@ namespace GmRelay.Shared.Platform;
 
 public interface IPlatformMessenger
 {
-    Task<PlatformMessageRef> SendScheduleAsync(PlatformScheduleMessage message, CancellationToken ct);
+    Task SendGroupMessageAsync(PlatformGroup group, string htmlText, IReadOnlyList<PlatformMessageAction> actions, CancellationToken ct) =>
+        throw new NotSupportedException("This platform messenger does not support messages with actions.");
+
+    Task UpdateGroupMessageAsync(PlatformMessageRef messageRef, string htmlText, IReadOnlyList<PlatformMessageAction> actions, CancellationToken ct) =>
+        throw new NotSupportedException("This platform messenger does not support message updates with actions.");
+
+    Task<PlatformMessageRef> CreateThreadAsync(PlatformGroup group, string title, CancellationToken ct) =>
+        throw new NotSupportedException("This platform messenger does not support thread creation.");
+
+    Task DeleteThreadAsync(PlatformGroup group, CancellationToken ct) =>
+        throw new NotSupportedException("This platform messenger does not support thread deletion.");
+
+    Task DeleteMessageAsync(PlatformMessageRef messageRef, CancellationToken ct) =>
+        throw new NotSupportedException("This platform messenger does not support message deletion.");
+
+    Task<PlatformMessageRef> SendScheduleAsync(PlatformScheduleMessage message, CancellationToken ct) =>
+        throw new NotSupportedException("This platform messenger does not support schedule messages.");
 
     Task UpdateScheduleAsync(PlatformScheduleMessage message, CancellationToken ct);
 

src/GmRelay.Web/Components/Layout/NavMenu.razor

@@ -73,7 +73,7 @@
                     </button>
                 </form>
 
-                <div class="nav-version">v3.0.1</div>
+                <div class="nav-version">v3.2.0</div>
             </div>
         </Authorized>
         <NotAuthorized>

src/GmRelay.Web/Components/Pages/Home.razor

@@ -44,9 +44,14 @@
                     <div class="group-card-icon">🎮</div>
                     <h3 class="group-card-title">@group.Name</h3>
                     <p class="group-card-id">ID: @(group.Platform == "Discord" ? group.ExternalGroupId : group.TelegramChatId.ToString())</p>
-                    <span class="status-badge @(group.ManagerRole == GroupManagerRoleExtensions.OwnerValue ? "status-success" : "status-info")" style="align-self: flex-start; margin-bottom: 1rem;">
-                        @FormatRole(group.ManagerRole)
-                    </span>
+                    <div class="group-card-meta">
+                        <span class="status-badge platform-badge">
+                            @FormatPlatform(group.Platform)
+                        </span>
+                        <span class="status-badge @(group.ManagerRole == GroupManagerRoleExtensions.OwnerValue ? "status-success" : "status-info")">
+                            @FormatRole(group.ManagerRole)
+                        </span>
+                    </div>
                     <a href="/group/@group.Id" class="btn-gm btn-gm-primary" style="width: 100%; justify-content: center; margin-top: auto;">
                         Посмотреть игры →
                     </a>
@@ -81,6 +86,20 @@
         font-family: 'Courier New', monospace;
         margin-bottom: 1rem;
     }
+
+    .group-card-meta {
+        display: flex;
+        flex-wrap: wrap;
+        gap: 0.5rem;
+        align-items: center;
+        margin-bottom: 1rem;
+    }
+
+    .platform-badge {
+        background: rgba(88, 101, 242, 0.15);
+        color: #9ea8ff;
+        border-color: rgba(88, 101, 242, 0.35);
+    }
 </style>
 
 @code {
@@ -104,4 +123,7 @@
 
     private static string FormatRole(string role) =>
         GroupManagerRoleExtensions.FromDatabaseValue(role).ToDisplayName();
+
+    private static string FormatPlatform(string? platform) =>
+        string.Equals(platform, "Discord", StringComparison.OrdinalIgnoreCase) ? "Discord" : "Telegram";
 }

src/GmRelay.Web/Services/CalendarSubscriptionService.cs

@@ -12,7 +12,8 @@ public sealed class CalendarSubscriptionService(NpgsqlDataSource dataSource)
     public string GenerateToken() => Guid.NewGuid().ToString("N");
 
     public async Task<string> CreateSubscriptionAsync(
-        long userTelegramId,
+        string userPlatform,
+        string userExternalId,
         Guid? groupId,
         CalendarSubscriptionFilter filter,
         CancellationToken ct = default)
@@ -20,9 +21,9 @@ public sealed class CalendarSubscriptionService(NpgsqlDataSource dataSource)
         var token = GenerateToken();
         await using var connection = await dataSource.OpenConnectionAsync(ct);
         await connection.ExecuteAsync(
-            @"INSERT INTO calendar_subscriptions (id, token, user_telegram_id, group_id, filter_type, created_at, expires_at)
-              VALUES (gen_random_uuid(), @token, @userTelegramId, @groupId, @filterType, now(), NULL)",
-            new { token, userTelegramId, groupId, filterType = (int)filter });
+            @"INSERT INTO calendar_subscriptions (id, token, user_platform, user_external_id, group_id, filter_type, created_at, expires_at)
+              VALUES (gen_random_uuid(), @token, @userPlatform, @userExternalId, @groupId, @filterType, now(), NULL)",
+            new { token, userPlatform, userExternalId, groupId, filterType = (int)filter });
         return token;
     }
 
@@ -31,7 +32,7 @@ public sealed class CalendarSubscriptionService(NpgsqlDataSource dataSource)
         await using var connection = await dataSource.OpenConnectionAsync(ct);
 
         var subscription = await connection.QueryFirstOrDefaultAsync<SubscriptionRecord>(
-            @"SELECT id, user_telegram_id as UserTelegramId, group_id as GroupId, filter_type as FilterType
+            @"SELECT id, group_id as GroupId, filter_type as FilterType
               FROM calendar_subscriptions
               WHERE token = @token
                 AND (expires_at IS NULL OR expires_at > now())",
@@ -88,6 +89,6 @@ public sealed class CalendarSubscriptionService(NpgsqlDataSource dataSource)
         .Replace("\n", "\\n")
         .Replace("\r", "");
 
-    private sealed record SubscriptionRecord(Guid Id, long UserTelegramId, Guid? GroupId, int FilterType);
+    private sealed record SubscriptionRecord(Guid Id, Guid? GroupId, int FilterType);
     private sealed record CalendarSessionDto(Guid Id, string Title, DateTime ScheduledAt);
 }

src/GmRelay.Web/Services/SessionService.cs

@@ -3,6 +3,7 @@ using GmRelay.Shared.Domain;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
+using Telegram.Bot.Exceptions;
 using GmRelay.Web.Services;
 
 namespace GmRelay.Web.Services;
@@ -95,6 +96,7 @@ internal sealed record WebBatchSessionRow(
     string NotificationMode,
     bool TopicCreatedByBot = false);
 internal sealed record WebTemplateGroupDto(long TelegramChatId);
+internal sealed record WebTemplateTopicDestination(int? MessageThreadId, bool TopicCreatedByBot);
 
 public sealed class SessionService(
     NpgsqlDataSource dataSource,
@@ -104,24 +106,45 @@ public sealed class SessionService(
     public async Task<List<WebGameGroup>> GetGroupsForUserAsync(string platform, string externalUserId)
     {
         await using var conn = await dataSource.OpenConnectionAsync();
-        var effectiveId = await _ResolveEffectivePlayerIdAsync(conn, platform, externalUserId);
-        if (effectiveId is null)
+        var playerIds = await _ResolveLinkedPlayerIdsAsync(conn, platform, externalUserId);
+        if (playerIds.Length == 0)
             return [];
 
         return (await conn.QueryAsync<WebGameGroup>(
             """
+            WITH visible_groups AS (
+                SELECT gm.group_id,
+                       CASE
+                           WHEN bool_or(gm.role = @OwnerRole) THEN @OwnerRole
+                           ELSE @CoGmRole
+                       END AS ManagerRole
+                FROM group_managers gm
+                WHERE gm.player_id = ANY(@PlayerIds)
+                GROUP BY gm.group_id
+            )
             SELECT g.id,
-                   g.telegram_chat_id AS TelegramChatId,
+                   g.external_group_id::BIGINT AS TelegramChatId,
                    g.external_group_id AS ExternalGroupId,
-                   g.name,
+                   COALESCE(NULLIF(g.name, g.external_group_id), latest_session.title, g.name) AS Name,
                    g.platform AS Platform,
-                   gm.role AS ManagerRole
-            FROM group_managers gm
-            JOIN game_groups g ON g.id = gm.group_id
-            WHERE gm.player_id = @PlayerId
+                   vg.ManagerRole
+            FROM visible_groups vg
+            JOIN game_groups g ON g.id = vg.group_id
+            LEFT JOIN LATERAL (
+                SELECT s.title
+                FROM sessions s
+                WHERE s.group_id = g.id
+                ORDER BY s.scheduled_at DESC
+                LIMIT 1
+            ) latest_session ON true
             ORDER BY g.name
             """,
-            new { PlayerId = effectiveId.Value })).ToList();
+            new
+            {
+                PlayerIds = playerIds,
+                OwnerRole = GroupManagerRoleExtensions.OwnerValue,
+                CoGmRole = GroupManagerRoleExtensions.CoGmValue
+            })).ToList();
     }
 
     public async Task<WebGameGroup?> GetGroupAsync(Guid groupId)
@@ -130,12 +153,19 @@ public sealed class SessionService(
         return await conn.QuerySingleOrDefaultAsync<WebGameGroup>(
             """
             SELECT g.id,
-                   g.telegram_chat_id AS TelegramChatId,
+                   g.external_group_id::BIGINT AS TelegramChatId,
                    g.external_group_id AS ExternalGroupId,
-                   g.name,
+                   COALESCE(NULLIF(g.name, g.external_group_id), latest_session.title, g.name) AS Name,
                    g.platform AS Platform,
                    @OwnerRole AS ManagerRole
             FROM game_groups g
+            LEFT JOIN LATERAL (
+                SELECT s.title
+                FROM sessions s
+                WHERE s.group_id = g.id
+                ORDER BY s.scheduled_at DESC
+                LIMIT 1
+            ) latest_session ON true
             WHERE g.id = @GroupId
             """,
             new { GroupId = groupId, OwnerRole = GroupManagerRoleExtensions.OwnerValue });
@@ -144,8 +174,8 @@ public sealed class SessionService(
     public async Task<bool> IsGroupManagerAsync(Guid groupId, string platform, string externalUserId)
     {
         await using var conn = await dataSource.OpenConnectionAsync();
-        var effectiveId = await _ResolveEffectivePlayerIdAsync(conn, platform, externalUserId);
-        if (effectiveId is null)
+        var playerIds = await _ResolveLinkedPlayerIdsAsync(conn, platform, externalUserId);
+        if (playerIds.Length == 0)
             return false;
 
         return await conn.ExecuteScalarAsync<bool>(
@@ -154,17 +184,17 @@ public sealed class SessionService(
                 SELECT 1
                 FROM group_managers
                 WHERE group_id = @GroupId
-                  AND player_id = @PlayerId
+                  AND player_id = ANY(@PlayerIds)
             )
             """,
-            new { GroupId = groupId, PlayerId = effectiveId.Value });
+            new { GroupId = groupId, PlayerIds = playerIds });
     }
 
     public async Task<bool> IsGroupOwnerAsync(Guid groupId, string platform, string externalUserId)
     {
         await using var conn = await dataSource.OpenConnectionAsync();
-        var effectiveId = await _ResolveEffectivePlayerIdAsync(conn, platform, externalUserId);
-        if (effectiveId is null)
+        var playerIds = await _ResolveLinkedPlayerIdsAsync(conn, platform, externalUserId);
+        if (playerIds.Length == 0)
             return false;
 
         return await conn.ExecuteScalarAsync<bool>(
@@ -173,11 +203,11 @@ public sealed class SessionService(
                 SELECT 1
                 FROM group_managers
                 WHERE group_id = @GroupId
-                  AND player_id = @PlayerId
+                  AND player_id = ANY(@PlayerIds)
                   AND role = @OwnerRole
             )
             """,
-            new { GroupId = groupId, PlayerId = effectiveId.Value, OwnerRole = GroupManagerRoleExtensions.OwnerValue });
+            new { GroupId = groupId, PlayerIds = playerIds, OwnerRole = GroupManagerRoleExtensions.OwnerValue });
     }
 
     public async Task<List<WebGroupManager>> GetGroupManagersAsync(Guid groupId)
@@ -185,11 +215,11 @@ public sealed class SessionService(
         await using var conn = await dataSource.OpenConnectionAsync();
         return (await conn.QueryAsync<WebGroupManager>(
             """
-            SELECT COALESCE(p.telegram_id, 0) AS TelegramId,
-                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+            SELECT COALESCE(p.external_user_id::BIGINT, 0) AS TelegramId,
+                   p.external_user_id AS ExternalUserId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                   p.external_username AS TelegramUsername,
+                   p.external_username AS ExternalUsername,
                    gm.role AS Role,
                    gm.created_at AS AddedAt
             FROM group_managers gm
@@ -210,7 +240,7 @@ public sealed class SessionService(
             SELECT
                 p.id AS PlayerId,
                 p.display_name AS DisplayName,
-                COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                p.external_username AS ExternalUsername,
                 COUNT(DISTINCT s.id) AS TotalSessions,
                 COUNT(DISTINCT CASE WHEN sp.rsvp_status = 'Confirmed' THEN s.id END) AS ConfirmedCount,
                 COUNT(DISTINCT CASE WHEN sp.rsvp_status = 'Declined' THEN s.id END) AS DeclinedCount,
@@ -229,7 +259,7 @@ public sealed class SessionService(
             WHERE s.group_id = @GroupId
               AND s.scheduled_at <= now()
               AND sp.is_gm = false
-            GROUP BY p.id, p.display_name, p.external_username, p.telegram_username
+            GROUP BY p.id, p.display_name, p.external_username
             ORDER BY AttendanceRate DESC, ConfirmedCount DESC
             """,
             new { GroupId = groupId })).ToList();
@@ -328,7 +358,7 @@ public sealed class SessionService(
         return (await conn.QueryAsync<WebSession>(
             @"SELECT s.id, s.group_id AS GroupId, s.title, s.scheduled_at AS ScheduledAt, s.status, s.join_link AS JoinLink,
                      s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
-                     g.telegram_chat_id AS TelegramChatId,
+                     g.external_group_id::BIGINT AS TelegramChatId,
                      s.max_players AS MaxPlayers,
                      COALESCE(active_counts.count, 0)::int AS ActivePlayerCount,
                      COALESCE(waitlist_counts.count, 0)::int AS WaitlistedPlayerCount,
@@ -366,7 +396,7 @@ public sealed class SessionService(
         return await conn.QuerySingleOrDefaultAsync<WebSession>(
             @"SELECT s.id, s.group_id AS GroupId, s.title, s.scheduled_at AS ScheduledAt, s.status, s.join_link AS JoinLink,
                      s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
-                     g.telegram_chat_id AS TelegramChatId,
+                     g.external_group_id::BIGINT AS TelegramChatId,
                      s.max_players AS MaxPlayers,
                      COALESCE(active_counts.count, 0)::int AS ActivePlayerCount,
                      COALESCE(waitlist_counts.count, 0)::int AS WaitlistedPlayerCount,
@@ -425,7 +455,7 @@ public sealed class SessionService(
         var oldSession = await conn.QuerySingleOrDefaultAsync<WebSession>(
             @"SELECT s.id, s.group_id AS GroupId, s.title, s.scheduled_at AS ScheduledAt, s.status, s.join_link AS JoinLink,
                      s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
-                     g.telegram_chat_id AS TelegramChatId,
+                     g.external_group_id::BIGINT AS TelegramChatId,
                      s.max_players AS MaxPlayers,
                      0 AS ActivePlayerCount,
                      0 AS WaitlistedPlayerCount,
@@ -511,7 +541,7 @@ public sealed class SessionService(
         var session = await conn.QuerySingleOrDefaultAsync<WebSession>(
             @"SELECT s.id, s.group_id AS GroupId, s.title, s.scheduled_at AS ScheduledAt, s.status, s.join_link AS JoinLink,
                      s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
-                     g.telegram_chat_id AS TelegramChatId,
+                     g.external_group_id::BIGINT AS TelegramChatId,
                      s.max_players AS MaxPlayers,
                      0 AS ActivePlayerCount,
                      0 AS WaitlistedPlayerCount,
@@ -610,11 +640,11 @@ public sealed class SessionService(
         return (await conn.QueryAsync<WebParticipant>(
             """
             SELECT sp.id AS Id,
-                   COALESCE(p.telegram_id, 0) AS TelegramId,
-                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                   COALESCE(p.external_user_id::BIGINT, 0) AS TelegramId,
+                   p.external_user_id AS ExternalUserId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                   p.external_username AS TelegramUsername,
+                   p.external_username AS ExternalUsername,
                    sp.rsvp_status AS RsvpStatus,
                    sp.registration_status AS RegistrationStatus,
                    sp.is_gm AS IsGm,
@@ -637,7 +667,7 @@ public sealed class SessionService(
         var session = await conn.QuerySingleOrDefaultAsync<WebSession>(
             @"SELECT s.id, s.group_id AS GroupId, s.title, s.scheduled_at AS ScheduledAt, s.status, s.join_link AS JoinLink,
                      s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
-                     g.telegram_chat_id AS TelegramChatId,
+                     g.external_group_id::BIGINT AS TelegramChatId,
                      s.max_players AS MaxPlayers,
                      0 AS ActivePlayerCount,
                      0 AS WaitlistedPlayerCount,
@@ -658,9 +688,9 @@ public sealed class SessionService(
         var participant = await conn.QuerySingleOrDefaultAsync<WebParticipant>(
             """
             SELECT sp.id AS Id,
-                   p.telegram_id AS TelegramId,
+                   p.external_user_id::BIGINT AS TelegramId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
+                   p.external_username AS TelegramUsername,
                    sp.rsvp_status AS RsvpStatus,
                    sp.registration_status AS RegistrationStatus,
                    sp.is_gm AS IsGm,
@@ -843,7 +873,7 @@ public sealed class SessionService(
                    s.status AS Status,
                    s.max_players AS MaxPlayers,
                    s.batch_message_id AS BatchMessageId,
-                   g.telegram_chat_id AS TelegramChatId,
+                   g.external_group_id::BIGINT AS TelegramChatId,
                    s.thread_id AS ThreadId,
                    s.topic_created_by_bot AS TopicCreatedByBot,
                    s.notification_mode AS NotificationMode
@@ -927,7 +957,7 @@ public sealed class SessionService(
                    s.status AS Status,
                    s.max_players AS MaxPlayers,
                    s.batch_message_id AS BatchMessageId,
-                   g.telegram_chat_id AS TelegramChatId,
+                   g.external_group_id::BIGINT AS TelegramChatId,
                    s.thread_id AS ThreadId,
                    s.topic_created_by_bot AS TopicCreatedByBot,
                    s.notification_mode AS NotificationMode
@@ -1149,7 +1179,7 @@ public sealed class SessionService(
         }
 
         var group = await conn.QuerySingleOrDefaultAsync<WebTemplateGroupDto>(
-            "SELECT telegram_chat_id AS TelegramChatId FROM game_groups WHERE id = @GroupId",
+            "SELECT external_group_id::BIGINT AS TelegramChatId FROM game_groups WHERE id = @GroupId",
             new { GroupId = groupId },
             transaction);
 
@@ -1158,6 +1188,10 @@ public sealed class SessionService(
             throw new SessionAccessDeniedException(groupId, "0");
         }
 
+        var topicDestination = await ResolveTemplateBatchTopicAsync(group.TelegramChatId, template.Title);
+        var messageThreadId = topicDestination.MessageThreadId;
+        var topicCreatedByBot = topicDestination.TopicCreatedByBot;
+
         var schedule = BatchSchedulePlanner.BuildRecurringSchedule(
             firstScheduledAt,
             template.SessionCount,
@@ -1169,8 +1203,8 @@ public sealed class SessionService(
         {
             var sessionId = await conn.ExecuteScalarAsync<Guid>(
                 """
-                INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, max_players, notification_mode)
-                VALUES (@BatchId, @GroupId, @Title, @JoinLink, @ScheduledAt, @Status, @MaxPlayers, @NotificationMode)
+                INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id, topic_created_by_bot, max_players, notification_mode)
+                VALUES (@BatchId, @GroupId, @Title, @JoinLink, @ScheduledAt, @Status, @ThreadId, @TopicCreatedByBot, @MaxPlayers, @NotificationMode)
                 RETURNING id
                 """,
                 new
@@ -1181,6 +1215,8 @@ public sealed class SessionService(
                     template.JoinLink,
                     ScheduledAt = scheduledAt,
                     Status = SessionStatus.Planned,
+                    ThreadId = messageThreadId,
+                    TopicCreatedByBot = topicCreatedByBot,
                     template.MaxPlayers,
                     template.NotificationMode
                 },
@@ -1195,6 +1231,7 @@ public sealed class SessionService(
         var renderResult = TelegramSessionBatchRenderer.Render(view);
         var batchMessage = await bot.SendMessage(
             chatId: group.TelegramChatId,
+            messageThreadId: messageThreadId,
             text: renderResult.Text,
             parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
             replyMarkup: renderResult.Markup);
@@ -1214,13 +1251,41 @@ public sealed class SessionService(
             template.NotificationMode);
     }
 
+    private async Task<WebTemplateTopicDestination> ResolveTemplateBatchTopicAsync(long telegramChatId, string title)
+    {
+        var chat = await bot.GetChat(chatId: telegramChatId);
+        if (!chat.IsForum)
+        {
+            return new WebTemplateTopicDestination(null, TopicCreatedByBot: false);
+        }
+
+        try
+        {
+            var topic = await bot.CreateForumTopic(
+                chatId: telegramChatId,
+                name: $"🎲 Игры: {title}");
+            return new WebTemplateTopicDestination(topic.MessageThreadId, TopicCreatedByBot: true);
+        }
+        catch (ApiRequestException ex) when (IsMissingForumTopicRightsError(ex.Message))
+        {
+            throw new InvalidOperationException(
+                "Не удалось создать Telegram topic. Сделайте бота admin и включите право Manage Topics, затем повторите действие.",
+                ex);
+        }
+    }
+
+    private static bool IsMissingForumTopicRightsError(string apiError) =>
+        apiError.Contains("not enough rights", StringComparison.OrdinalIgnoreCase) ||
+        apiError.Contains("CHAT_ADMIN_REQUIRED", StringComparison.OrdinalIgnoreCase) ||
+        apiError.Contains("not an administrator", StringComparison.OrdinalIgnoreCase);
+
     private async Task<List<WebDirectNotificationRecipient>> LoadSessionDirectRecipientsAsync(
         Npgsql.NpgsqlConnection conn,
         Guid sessionId)
     {
         return (await conn.QueryAsync<WebDirectNotificationRecipient>(
             """
-            SELECT p.telegram_id AS TelegramId,
+            SELECT p.external_user_id::BIGINT AS TelegramId,
                    p.display_name AS DisplayName
             FROM session_participants sp
             JOIN players p ON p.id = sp.player_id
@@ -1237,7 +1302,7 @@ public sealed class SessionService(
     {
         return (await conn.QueryAsync<WebDirectNotificationRecipient>(
             """
-            SELECT DISTINCT p.telegram_id AS TelegramId,
+            SELECT DISTINCT p.external_user_id::BIGINT AS TelegramId,
                             p.display_name AS DisplayName
             FROM session_participants sp
             JOIN players p ON p.id = sp.player_id
@@ -1290,7 +1355,7 @@ public sealed class SessionService(
             var participants = (await conn.QueryAsync<ParticipantBatchDto>(
                 @"SELECT sp.session_id AS SessionId,
                          p.display_name AS DisplayName,
-                         p.telegram_username AS TelegramUsername,
+                         p.external_username AS TelegramUsername,
                          sp.registration_status AS RegistrationStatus
                   FROM session_participants sp
                   JOIN players p ON sp.player_id = p.id
@@ -1327,7 +1392,7 @@ public sealed class SessionService(
                    s.group_id AS GroupId,
                    (array_agg(s.title ORDER BY s.scheduled_at))[1] AS Title,
                    (array_agg(s.join_link ORDER BY s.scheduled_at))[1] AS JoinLink,
-                   g.telegram_chat_id AS TelegramChatId,
+                   g.external_group_id::BIGINT AS TelegramChatId,
                    (array_agg(s.batch_message_id ORDER BY s.scheduled_at))[1] AS BatchMessageId,
                    (array_agg(s.thread_id ORDER BY s.scheduled_at))[1] AS ThreadId,
                    (array_agg(s.notification_mode ORDER BY s.scheduled_at))[1] AS NotificationMode
@@ -1335,7 +1400,7 @@ public sealed class SessionService(
             JOIN game_groups g ON g.id = s.group_id
             WHERE s.batch_id = @BatchId
               AND s.group_id = @GroupId
-            GROUP BY s.batch_id, s.group_id, g.telegram_chat_id
+            GROUP BY s.batch_id, s.group_id, g.external_group_id
             """,
             new { BatchId = batchId, GroupId = groupId },
             transaction);
@@ -1561,6 +1626,23 @@ public sealed class SessionService(
         return primaryId ?? playerId;
     }
 
+    private static async Task<Guid[]> _ResolveLinkedPlayerIdsAsync(NpgsqlConnection conn, string platform, string externalUserId)
+    {
+        var effectiveId = await _ResolveEffectivePlayerIdAsync(conn, platform, externalUserId);
+        if (effectiveId is null)
+            return [];
+
+        return (await conn.QueryAsync<Guid>(
+            """
+            SELECT @EffectiveId
+            UNION
+            SELECT secondary_player_id
+            FROM player_links
+            WHERE primary_player_id = @EffectiveId
+            """,
+            new { EffectiveId = effectiveId.Value })).ToArray();
+    }
+
     private static async Task<Guid> _UpsertPlayerAndGetIdAsync(
         NpgsqlConnection conn, string platform, string externalUserId,
         string displayName, string? avatarUrl, NpgsqlTransaction? transaction)

tests/GmRelay.Bot.Tests/Discord/DiscordListSessionsHandlerTests.cs

@@ -33,7 +33,17 @@ public sealed class DiscordListSessionsHandlerTests
 
         Assert.Contains("platform = 'Discord'", handler, StringComparison.Ordinal);
         Assert.Contains("external_group_id = @GuildId", handler, StringComparison.Ordinal);
-        Assert.Contains("scheduled_at > NOW()", handler, StringComparison.Ordinal);
+        Assert.Contains("scheduled_at > now() - interval '4 hours'", handler, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldIncludeRecentlyStartedSessionsForCleanup()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordListSessionsHandler.cs");
+        var handler = File.ReadAllText(handlerPath);
+
+        Assert.Contains("now() - interval '4 hours'", handler, StringComparison.OrdinalIgnoreCase);
     }
 
     [Fact]
@@ -47,6 +57,17 @@ public sealed class DiscordListSessionsHandlerTests
         Assert.DoesNotContain("telegram_id", handler, StringComparison.Ordinal);
     }
 
+    [Fact]
+    public void Handler_ShouldExposeDeleteActionForManagers()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordListSessionsHandler.cs");
+        var handler = File.ReadAllText(handlerPath);
+
+        Assert.Contains("delete_session", handler, StringComparison.Ordinal);
+        Assert.Contains("CanManageSchedule", handler, StringComparison.Ordinal);
+    }
+
     [Fact]
     public void Command_ShouldExist()
     {
@@ -66,4 +87,18 @@ public sealed class DiscordListSessionsHandlerTests
         Assert.Contains("SlashCommand", command, StringComparison.Ordinal);
         Assert.Contains("listsessions", command, StringComparison.Ordinal);
     }
+
+    [Fact]
+    public void DeleteHandler_ShouldDeleteOnlySessionsFromTheInteractionGuild()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordDeleteSessionHandler.cs");
+
+        Assert.True(File.Exists(handlerPath), "DiscordDeleteSessionHandler should exist.");
+
+        var handler = File.ReadAllText(handlerPath);
+        Assert.Contains("DELETE FROM sessions", handler, StringComparison.Ordinal);
+        Assert.Contains("external_group_id = @GuildId", handler, StringComparison.Ordinal);
+        Assert.Contains("CanManageSchedule", handler, StringComparison.Ordinal);
+    }
 }

tests/GmRelay.Bot.Tests/Discord/DiscordNewSessionHandlerTests.cs

@@ -17,6 +17,17 @@ public sealed class DiscordNewSessionHandlerTests
 
     // --- Runtime tests for ParseTimeInput (static, no DB) ---
 
+    [Fact]
+    public void ParseTimeInput_ShouldTreatInputAsMoscowTime()
+    {
+        var result = DiscordNewSessionHandler.ParseTimeInput("2026-06-01 15:00");
+        Assert.True(result.IsSuccess);
+        // 15:00 MSK = 12:00 UTC
+        Assert.Equal(12, result.Value.Hour);
+        Assert.Equal(0, result.Value.Minute);
+        Assert.Equal(TimeSpan.Zero, result.Value.Offset);
+    }
+
     [Fact]
     public void ParseTimeInput_ShouldParseDiscordDateFormat()
     {
@@ -28,7 +39,8 @@ public sealed class DiscordNewSessionHandlerTests
         Assert.Equal(expected.Year, result.Value.Year);
         Assert.Equal(expected.Month, result.Value.Month);
         Assert.Equal(expected.Day, result.Value.Day);
-        Assert.Equal(19, result.Value.Hour);
+        // Input is treated as Moscow time; 19:30 MSK = 16:30 UTC
+        Assert.Equal(16, result.Value.Hour);
         Assert.Equal(30, result.Value.Minute);
     }
 
@@ -127,6 +139,18 @@ public sealed class DiscordNewSessionHandlerTests
         Assert.Contains("RollbackAsync", source, StringComparison.Ordinal);
     }
 
+    [Fact]
+    public void Handler_ShouldNotRollbackCommittedTransactionAfterPostCommitFailure()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.Contains("transactionCommitted = false", source, StringComparison.Ordinal);
+        Assert.Contains("transactionCommitted = true", source, StringComparison.Ordinal);
+        Assert.Contains("if (!transactionCommitted)", source, StringComparison.Ordinal);
+    }
+
     [Fact]
     public void Handler_ShouldRespectCancellationToken()
     {
@@ -145,7 +169,30 @@ public sealed class DiscordNewSessionHandlerTests
         var source = File.ReadAllText(commandPath);
 
         Assert.Contains("DiscordSessionBatchRenderer.Render", source, StringComparison.Ordinal);
-        Assert.Contains("WithEmbeds", source, StringComparison.Ordinal);
+        Assert.Contains("message.Embeds = embeds", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldLeaveScheduleMessageCreationToInteractionResponse()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.DoesNotContain("SendScheduleAsync", source, StringComparison.Ordinal);
+        Assert.DoesNotContain("PlatformScheduleMessage", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldStoreReadableDiscordGroupNameForWebCards()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.Contains("groupName", source, StringComparison.Ordinal);
+        Assert.Contains("displayGroupName", source, StringComparison.Ordinal);
+        Assert.Contains("VALUES (@GroupName, 'Discord'", source, StringComparison.Ordinal);
     }
 
     private static DateTimeOffset FutureDateAt1930()

tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs

@@ -40,6 +40,7 @@ public sealed class DiscordProjectStructureTests
         Assert.Contains("GmRelay.Shared.csproj", project);
         Assert.DoesNotContain("Telegram.Bot", project);
         Assert.DoesNotContain("GmRelay.Bot.csproj", project);
+        Assert.Contains("Dapper.AOT", project);
     }
 
     [Fact]
@@ -61,7 +62,7 @@ public sealed class DiscordProjectStructureTests
         var prChecks = File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "pr-checks.yml"));
         var deploy = File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml"));
 
-        Assert.Contains("gmrelay-discord-bot:3.0.1", compose);
+        Assert.Contains("gmrelay-discord-bot:3.2.0", compose);
         Assert.Contains("Discord__Token=${DISCORD_BOT_TOKEN:?Set DISCORD_BOT_TOKEN in .env}", compose);
         Assert.Contains("src/GmRelay.DiscordBot/Dockerfile", deploy);
         Assert.Contains("DISCORD_BOT_TOKEN", deploy);
@@ -75,13 +76,13 @@ public sealed class DiscordProjectStructureTests
     {
         var repoRoot = GetRepoRoot();
 
-        Assert.Contains("<Version>3.0.1</Version>", File.ReadAllText(Path.Combine(repoRoot, "Directory.Build.props")));
-        Assert.Contains("VERSION: 3.0.1", File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml")));
-        Assert.Contains("gmrelay-bot:3.0.1", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
-        Assert.Contains("gmrelay-web:3.0.1", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
-        Assert.Contains("gmrelay-discord-bot:3.0.1", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+        Assert.Contains("<Version>3.2.0</Version>", File.ReadAllText(Path.Combine(repoRoot, "Directory.Build.props")));
+        Assert.Contains("VERSION: 3.2.0", File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml")));
+        Assert.Contains("gmrelay-bot:3.2.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+        Assert.Contains("gmrelay-web:3.2.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+        Assert.Contains("gmrelay-discord-bot:3.2.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
         Assert.Contains(
-            "v3.0.1",
+            "v3.2.0",
             File.ReadAllText(Path.Combine(repoRoot, "src", "GmRelay.Web", "Components", "Layout", "NavMenu.razor")));
     }
 
@@ -94,6 +95,16 @@ public sealed class DiscordProjectStructureTests
         Assert.Contains("DISCORD_BOT_TOKEN", envExample);
     }
 
+    [Fact]
+    public void Readme_ShouldNotAskForUnusedDiscordBotClientId()
+    {
+        var repoRoot = GetRepoRoot();
+        var readme = File.ReadAllText(Path.Combine(repoRoot, "README.md"));
+
+        Assert.DoesNotContain("DISCORD_BOT_CLIENT_ID", readme);
+        Assert.Contains("DISCORD_CLIENT_ID", readme);
+    }
+
     [Fact]
     public void Compose_ShouldIncludeDiscordHealthcheck()
     {

tests/GmRelay.Bot.Tests/Discord/DiscordSessionInteractionModuleSourceTests.cs

@@ -21,6 +21,26 @@ public sealed class DiscordSessionInteractionModuleSourceTests
         Assert.Contains("MessageFlags.Ephemeral", source, StringComparison.Ordinal);
     }
 
+    [Fact]
+    public async Task Module_ShouldUpdateSourceScheduleMessageThroughComponentInteraction()
+    {
+        var source = await ReadRepositoryFileAsync("src/GmRelay.DiscordBot/Features/Sessions/DiscordSessionInteractionModule.cs");
+
+        Assert.Contains("InteractionCallback.DeferredModifyMessage", source, StringComparison.Ordinal);
+        Assert.Contains("DiscordSessionBatchRenderer.Render", source, StringComparison.Ordinal);
+        Assert.Contains("FollowupAsync", source, StringComparison.Ordinal);
+        Assert.Contains("CompleteScheduleUpdateResponseAsync", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task Module_ShouldRouteDeleteSessionButtons()
+    {
+        var source = await ReadRepositoryFileAsync("src/GmRelay.DiscordBot/Features/Sessions/DiscordSessionInteractionModule.cs");
+
+        Assert.Contains("[ComponentInteraction(\"delete_session\")]", source, StringComparison.Ordinal);
+        Assert.Contains("DiscordDeleteSessionHandler", source, StringComparison.Ordinal);
+    }
+
     [Fact]
     public async Task Module_ShouldRouteRsvpButtonsToNeutralHandler()
     {

tests/GmRelay.Bot.Tests/Discord/DiscordStartupTests.cs

@@ -1,5 +1,8 @@
 using System;
 using System.IO;
+using System.Reflection;
+using GmRelay.DiscordBot.Features.Sessions;
+using NetCord.Services.ApplicationCommands;
 
 namespace GmRelay.Bot.Tests.Discord;
 
@@ -47,6 +50,41 @@ public sealed class DiscordStartupTests
         Assert.Contains(".AddComponentInteractions", program);
         Assert.Contains(".AddGatewayHandlers", program);
         Assert.Contains("AddSlashCommand", program);
+        Assert.Contains("AddModules(typeof(Program).Assembly)", program);
+    }
+
+    [Theory]
+    [InlineData(typeof(DiscordNewSessionCommand), "newsession")]
+    [InlineData(typeof(DiscordListSessionsCommand), "listsessions")]
+    [InlineData(typeof(DiscordRescheduleCommand), "reschedule")]
+    public void DiscordSessionSlashCommands_ShouldBeDeclaredOnModuleMethods(Type moduleType, string commandName)
+    {
+        var executeMethod = moduleType.GetMethod("ExecuteAsync", BindingFlags.Instance | BindingFlags.Public);
+
+        Assert.NotNull(executeMethod);
+
+        var methodAttribute = Assert.Single(executeMethod.GetCustomAttributes<SlashCommandAttribute>(inherit: false));
+        var nameProperty = typeof(SlashCommandAttribute).GetProperty("Name")
+            ?? throw new InvalidOperationException("SlashCommandAttribute should expose command name.");
+
+        Assert.Equal(commandName, nameProperty.GetValue(methodAttribute));
+        Assert.Empty(moduleType.GetCustomAttributes<SlashCommandAttribute>(inherit: false));
+    }
+
+    [Fact]
+    public void DiscordSessionSlashCommands_ShouldBeDiscoverableByNetCordService()
+    {
+        var service = new ApplicationCommandService<SlashCommandContext>();
+
+        service.AddModules(typeof(DiscordNewSessionCommand).Assembly);
+
+        var commandNames = service.GetCommands()
+            .Select(command => command.Name)
+            .ToArray();
+
+        Assert.Contains("newsession", commandNames);
+        Assert.Contains("listsessions", commandNames);
+        Assert.Contains("reschedule", commandNames);
     }
 
     [Fact]

tests/GmRelay.Bot.Tests/Features/Landing/DiscordLandingPromisesSmokeTests.cs

@@ -1,5 +1,5 @@
 using GmRelay.Bot.Features.Sessions.CreateSession;
-using GmRelay.Bot.Features.Sessions.RescheduleSession;
+using BotRescheduleHandler = GmRelay.Bot.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputHandler;
 using GmRelay.DiscordBot.Rendering;
 using GmRelay.Shared.Domain;
 using GmRelay.Shared.Features.Sessions.RescheduleSession;
@@ -69,14 +69,14 @@ public sealed class DiscordLandingPromisesSmokeTests
         };
         var deadline = new DateTimeOffset(2026, 5, 20, 18, 0, 0, TimeSpan.Zero);
         var voteParticipants = scenario.ActiveVoteParticipants(firstSessionId);
-        var voteMessage = HandleRescheduleTimeInputHandler.BuildVotingMessage(
+        var voteMessage = BotRescheduleHandler.BuildVotingMessage(
             scenario.Title,
             scenario.Sessions[0].ScheduledAt,
             deadline,
             options,
             voteParticipants,
             []);
-        var voteKeyboard = HandleRescheduleTimeInputHandler.BuildVotingKeyboard(options);
+        var voteKeyboard = BotRescheduleHandler.BuildVotingKeyboard(options);
 
         Assert.Contains("Landing Promise Smoke", voteMessage);
         Assert.Contains("0/2", voteMessage);

tests/GmRelay.Bot.Tests/Features/Landing/TelegramLandingPromisesSmokeTests.cs

@@ -1,5 +1,5 @@
 using GmRelay.Bot.Features.Sessions.CreateSession;
-using GmRelay.Bot.Features.Sessions.RescheduleSession;
+using BotRescheduleHandler = GmRelay.Bot.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputHandler;
 using GmRelay.Shared.Domain;
 using GmRelay.Shared.Features.Sessions.RescheduleSession;
 using GmRelay.Shared.Rendering;
@@ -65,14 +65,14 @@ public sealed class TelegramLandingPromisesSmokeTests
         };
         var deadline = new DateTimeOffset(2026, 5, 20, 18, 0, 0, TimeSpan.Zero);
         var voteParticipants = scenario.ActiveVoteParticipants(firstSessionId);
-        var voteMessage = HandleRescheduleTimeInputHandler.BuildVotingMessage(
+        var voteMessage = BotRescheduleHandler.BuildVotingMessage(
             scenario.Title,
             scenario.Sessions[0].ScheduledAt,
             deadline,
             options,
             voteParticipants,
             []);
-        var voteKeyboard = HandleRescheduleTimeInputHandler.BuildVotingKeyboard(options);
+        var voteKeyboard = BotRescheduleHandler.BuildVotingKeyboard(options);
 
         Assert.Contains("Landing Promise Smoke", voteMessage);
         Assert.Contains("0/2", voteMessage);

tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/CreateSessionCommandContractTests.cs

@@ -0,0 +1,36 @@
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.CreateSession;
+
+public sealed class CreateSessionCommandContractTests
+{
+    [Fact]
+    public void CreateSessionCommand_ShouldExposePlatformNeutralContext()
+    {
+        AssertProperty<CreateSessionCommand>("User", typeof(PlatformUser));
+        AssertProperty<CreateSessionCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<CreateSessionCommand>("Title", typeof(string));
+        AssertProperty<CreateSessionCommand>("Link", typeof(string));
+        AssertProperty<CreateSessionCommand>("ScheduledTimes", typeof(IReadOnlyList<DateTimeOffset>));
+        AssertProperty<CreateSessionCommand>("MaxPlayers", typeof(int?));
+        AssertProperty<CreateSessionCommand>("ImageReference", typeof(string));
+        AssertNoTelegramSpecificProperties<CreateSessionCommand>();
+    }
+
+    private static void AssertProperty<T>(string name, Type expectedType)
+    {
+        var property = Assert.Single(typeof(T).GetProperties(), p => p.Name == name);
+        Assert.Equal(expectedType, property.PropertyType);
+    }
+
+    private static void AssertNoTelegramSpecificProperties<T>()
+    {
+        var names = typeof(T).GetProperties().Select(p => p.Name).ToArray();
+        Assert.DoesNotContain(names, name => name.Contains("Telegram", StringComparison.Ordinal));
+        Assert.DoesNotContain("ChatId", names);
+        Assert.DoesNotContain("MessageId", names);
+        Assert.DoesNotContain("TelegramUserId", names);
+        Assert.DoesNotContain("TelegramUsername", names);
+    }
+}

tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/CreateSessionHandlerTests.cs

@@ -0,0 +1,36 @@
+namespace GmRelay.Bot.Tests.Features.Sessions.CreateSession;
+
+public sealed class CreateSessionHandlerTests
+{
+    [Fact]
+    public async Task SharedHandler_ShouldExist_AndBePlatformNeutral()
+    {
+        var handler = await ReadRepositoryFileAsync("src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionHandler.cs");
+
+        Assert.Contains("CreateSessionCommand", handler, StringComparison.Ordinal);
+        Assert.Contains("CreateSessionResult", handler, StringComparison.Ordinal);
+        Assert.Contains("command.User", handler, StringComparison.Ordinal);
+        Assert.Contains("command.Group", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("ITelegramBotClient", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("Telegram.Bot", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("InlineKeyboardMarkup", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("MessageThreadId", handler, StringComparison.Ordinal);
+    }
+
+    private static async Task<string> ReadRepositoryFileAsync(string relativePath)
+    {
+        var directory = new DirectoryInfo(AppContext.BaseDirectory);
+        while (directory is not null)
+        {
+            var candidate = Path.Combine(directory.FullName, relativePath);
+            if (File.Exists(candidate))
+            {
+                return await File.ReadAllTextAsync(candidate);
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}

tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/PlatformNeutralSessionInteractionCommandTests.cs

@@ -13,6 +13,7 @@ public sealed class PlatformNeutralSessionInteractionCommandTests
         AssertProperty<JoinSessionCommand>("InteractionId", typeof(string));
         AssertProperty<JoinSessionCommand>("Group", typeof(PlatformGroup));
         AssertProperty<JoinSessionCommand>("ScheduleMessage", typeof(PlatformMessageRef));
+        AssertProperty<JoinSessionCommand>("DeferScheduleUpdate", typeof(bool));
         AssertNoTelegramSpecificProperties<JoinSessionCommand>();
     }
 
@@ -24,12 +25,29 @@ public sealed class PlatformNeutralSessionInteractionCommandTests
         AssertProperty<LeaveSessionCommand>("InteractionId", typeof(string));
         AssertProperty<LeaveSessionCommand>("Group", typeof(PlatformGroup));
         AssertProperty<LeaveSessionCommand>("ScheduleMessage", typeof(PlatformMessageRef));
+        AssertProperty<LeaveSessionCommand>("DeferScheduleUpdate", typeof(bool));
         AssertNoTelegramSpecificProperties<LeaveSessionCommand>();
     }
 
+    [Fact]
+    public void SessionInteractionResult_ShouldExposeReplyTextAndUpdatedView()
+    {
+        var resultType = typeof(JoinSessionCommand).Assembly.GetType(
+            "GmRelay.Shared.Features.Sessions.CreateSession.SessionInteractionResult");
+
+        Assert.NotNull(resultType);
+        AssertProperty(resultType, "ReplyText", typeof(string));
+        AssertProperty(resultType, "UpdatedView", typeof(GmRelay.Shared.Rendering.SessionBatchViewModel));
+    }
+
     private static void AssertProperty<T>(string name, Type expectedType)
     {
-        var property = Assert.Single(typeof(T).GetProperties(), property => property.Name == name);
+        AssertProperty(typeof(T), name, expectedType);
+    }
+
+    private static void AssertProperty(Type type, string name, Type expectedType)
+    {
+        var property = Assert.Single(type.GetProperties(), property => property.Name == name);
 
         Assert.Equal(expectedType, property.PropertyType);
     }

tests/GmRelay.Bot.Tests/Features/Sessions/ExportCalendar/ExportCalendarCommandContractTests.cs

@@ -0,0 +1,31 @@
+using GmRelay.Shared.Features.Sessions.ExportCalendar;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.ExportCalendar;
+
+public sealed class ExportCalendarCommandContractTests
+{
+    [Fact]
+    public void ExportCalendarCommand_ShouldExposePlatformNeutralContext()
+    {
+        AssertProperty<ExportCalendarCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<ExportCalendarCommand>("User", typeof(PlatformUser));
+        AssertNoTelegramSpecificProperties<ExportCalendarCommand>();
+    }
+
+    private static void AssertProperty<T>(string name, Type expectedType)
+    {
+        var property = Assert.Single(typeof(T).GetProperties(), p => p.Name == name);
+        Assert.Equal(expectedType, property.PropertyType);
+    }
+
+    private static void AssertNoTelegramSpecificProperties<T>()
+    {
+        var names = typeof(T).GetProperties().Select(p => p.Name).ToArray();
+        Assert.DoesNotContain(names, name => name.Contains("Telegram", StringComparison.Ordinal));
+        Assert.DoesNotContain("ChatId", names);
+        Assert.DoesNotContain("MessageId", names);
+        Assert.DoesNotContain("TelegramUserId", names);
+        Assert.DoesNotContain("TelegramUsername", names);
+    }
+}

tests/GmRelay.Bot.Tests/Features/Sessions/ListSessions/ListSessionsCommandContractTests.cs

@@ -0,0 +1,41 @@
+using GmRelay.Shared.Features.Sessions.ListSessions;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.ListSessions;
+
+public sealed class ListSessionsCommandContractTests
+{
+    [Fact]
+    public void ListSessionsCommand_ShouldExposePlatformNeutralContext()
+    {
+        AssertProperty<ListSessionsCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<ListSessionsCommand>("User", typeof(PlatformUser));
+        AssertNoTelegramSpecificProperties<ListSessionsCommand>();
+    }
+
+    [Fact]
+    public void DeleteSessionCommand_ShouldExposePlatformNeutralContext()
+    {
+        AssertProperty<DeleteSessionCommand>("SessionId", typeof(Guid));
+        AssertProperty<DeleteSessionCommand>("User", typeof(PlatformUser));
+        AssertProperty<DeleteSessionCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<DeleteSessionCommand>("ScheduleMessage", typeof(PlatformMessageRef));
+        AssertNoTelegramSpecificProperties<DeleteSessionCommand>();
+    }
+
+    private static void AssertProperty<T>(string name, Type expectedType)
+    {
+        var property = Assert.Single(typeof(T).GetProperties(), p => p.Name == name);
+        Assert.Equal(expectedType, property.PropertyType);
+    }
+
+    private static void AssertNoTelegramSpecificProperties<T>()
+    {
+        var names = typeof(T).GetProperties().Select(p => p.Name).ToArray();
+        Assert.DoesNotContain(names, name => name.Contains("Telegram", StringComparison.Ordinal));
+        Assert.DoesNotContain("ChatId", names);
+        Assert.DoesNotContain("MessageId", names);
+        Assert.DoesNotContain("TelegramUserId", names);
+        Assert.DoesNotContain("TelegramUsername", names);
+    }
+}

tests/GmRelay.Bot.Tests/Features/Sessions/ListSessions/SessionListMessageRendererTests.cs

@@ -1,5 +1,6 @@
 using GmRelay.Bot.Features.Sessions.ListSessions;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.ListSessions;
 
 namespace GmRelay.Bot.Tests.Features.Sessions.ListSessions;
 
@@ -22,17 +23,15 @@ public sealed class SessionListMessageRendererTests
                 true)
         };
 
-        var result = SessionListMessageRenderer.Render(sessions);
-        Assert.NotNull(result.Markup);
-        var buttons = result.Markup.InlineKeyboard.SelectMany(row => row).ToList();
+        var text = SessionListMessageRenderer.RenderText(sessions);
+        var actions = SessionListMessageRenderer.RenderActions(sessions);
 
-        Assert.Contains("Ravenloft", result.Text);
-        Assert.Collection(
-            buttons.Select(button => button.CallbackData),
-            callbackData => Assert.Equal($"cancel_session:{sessionId}", callbackData),
-            callbackData => Assert.Equal($"reschedule_session:{sessionId}", callbackData),
-            callbackData => Assert.Equal($"promote_waitlist:{sessionId}", callbackData),
-            callbackData => Assert.Equal($"delete_session:{sessionId}", callbackData));
+        Assert.Contains("Ravenloft", text);
+        Assert.Equal(4, actions.Count);
+        Assert.Contains(actions, a => a.Payload == $"cancel_session:{sessionId}");
+        Assert.Contains(actions, a => a.Payload == $"reschedule_session:{sessionId}");
+        Assert.Contains(actions, a => a.Payload == $"promote_waitlist:{sessionId}");
+        Assert.Contains(actions, a => a.Payload == $"delete_session:{sessionId}");
     }
 
     [Fact]
@@ -51,8 +50,7 @@ public sealed class SessionListMessageRendererTests
                 false)
         };
 
-        var result = SessionListMessageRenderer.Render(sessions);
-
-        Assert.Null(result.Markup);
+        var actions = SessionListMessageRenderer.RenderActions(sessions);
+        Assert.Empty(actions);
     }
 }

tests/GmRelay.Bot.Tests/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandlerTests.cs

@@ -1,4 +1,4 @@
-using GmRelay.Bot.Features.Sessions.RescheduleSession;
+using BotHandler = GmRelay.Bot.Features.Sessions.RescheduleSession.HandleRescheduleTimeInputHandler;
 using GmRelay.Shared.Features.Sessions.RescheduleSession;
 
 namespace GmRelay.Bot.Tests.Features.Sessions.RescheduleSession;
@@ -72,7 +72,7 @@ public sealed class HandleRescheduleTimeInputHandlerTests
             new(secondOptionId, bobId, "Bob", null)
         };
 
-        var text = HandleRescheduleTimeInputHandler.BuildVotingMessage(
+        var text = BotHandler.BuildVotingMessage(
             "Shadowrun",
             currentTime,
             deadline,
@@ -101,7 +101,7 @@ public sealed class HandleRescheduleTimeInputHandlerTests
             new(secondOptionId, 2, new DateTimeOffset(2026, 4, 27, 17, 0, 0, TimeSpan.Zero))
         };
 
-        var keyboard = HandleRescheduleTimeInputHandler.BuildVotingKeyboard(options);
+        var keyboard = BotHandler.BuildVotingKeyboard(options);
         var buttons = keyboard.InlineKeyboard.SelectMany(row => row).ToList();
 
         Assert.Collection(

tests/GmRelay.Bot.Tests/Features/Sessions/RescheduleSession/RescheduleCommandContractTests.cs

@@ -0,0 +1,43 @@
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.RescheduleSession;
+
+public sealed class RescheduleCommandContractTests
+{
+    [Fact]
+    public void HandleRescheduleTimeInputCommand_ShouldExposePlatformNeutralContext()
+    {
+        AssertProperty<HandleRescheduleTimeInputCommand>("User", typeof(PlatformUser));
+        AssertProperty<HandleRescheduleTimeInputCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<HandleRescheduleTimeInputCommand>("Text", typeof(string));
+        AssertNoTelegramSpecificProperties<HandleRescheduleTimeInputCommand>();
+    }
+
+    [Fact]
+    public void HandleRescheduleVoteCommand_ShouldExposePlatformNeutralContext()
+    {
+        AssertProperty<HandleRescheduleVoteCommand>("OptionId", typeof(Guid));
+        AssertProperty<HandleRescheduleVoteCommand>("User", typeof(PlatformUser));
+        AssertProperty<HandleRescheduleVoteCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<HandleRescheduleVoteCommand>("InteractionId", typeof(string));
+        AssertProperty<HandleRescheduleVoteCommand>("ScheduleMessage", typeof(PlatformMessageRef));
+        AssertNoTelegramSpecificProperties<HandleRescheduleVoteCommand>();
+    }
+
+    private static void AssertProperty<T>(string name, Type expectedType)
+    {
+        var property = Assert.Single(typeof(T).GetProperties(), p => p.Name == name);
+        Assert.Equal(expectedType, property.PropertyType);
+    }
+
+    private static void AssertNoTelegramSpecificProperties<T>()
+    {
+        var names = typeof(T).GetProperties().Select(p => p.Name).ToArray();
+        Assert.DoesNotContain(names, name => name.Contains("Telegram", StringComparison.Ordinal));
+        Assert.DoesNotContain("ChatId", names);
+        Assert.DoesNotContain("MessageId", names);
+        Assert.DoesNotContain("TelegramUserId", names);
+        Assert.DoesNotContain("TelegramUsername", names);
+    }
+}

tests/GmRelay.Bot.Tests/Infrastructure/Database/PlatformIdentityMigrationTests.cs

@@ -58,7 +58,7 @@ public sealed class PlatformIdentityMigrationTests
     [Fact]
     public async Task Code_ShouldQueryPlayersUsingExternalUserIdFallback()
     {
-        var createHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs");
+        var createHandler = await ReadRepositoryFileAsync("src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionHandler.cs");
 
         Assert.Contains("external_user_id", createHandler, StringComparison.Ordinal);
     }
@@ -66,7 +66,7 @@ public sealed class PlatformIdentityMigrationTests
     [Fact]
     public async Task Code_ShouldQueryGroupsUsingExternalGroupIdFallback()
     {
-        var createHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs");
+        var createHandler = await ReadRepositoryFileAsync("src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionHandler.cs");
 
         Assert.Contains("external_group_id", createHandler, StringComparison.Ordinal);
     }
@@ -91,6 +91,15 @@ public sealed class PlatformIdentityMigrationTests
         Assert.Contains("platform", service, StringComparison.Ordinal);
     }
 
+    [Fact]
+    public async Task WebSessionService_ShouldAuthorizeGroupsAcrossLinkedIdentities()
+    {
+        var service = await ReadRepositoryFileAsync("src/GmRelay.Web/Services/SessionService.cs");
+
+        Assert.Contains("_ResolveLinkedPlayerIdsAsync", service, StringComparison.Ordinal);
+        Assert.Contains("player_id = ANY(@PlayerIds)", service, StringComparison.Ordinal);
+    }
+
     [Fact]
     public async Task AttendanceStatsFunction_ShouldReferenceExternalUsername()
     {
@@ -108,6 +117,28 @@ public sealed class PlatformIdentityMigrationTests
         Assert.Contains("telegram_id DROP NOT NULL", migration, StringComparison.Ordinal);
     }
 
+    [Fact]
+    public async Task MigrationV024_ShouldDeprecateTelegramColumns()
+    {
+        var migration = await ReadRepositoryFileAsync("src/GmRelay.Bot/Migrations/V024__deprecate_telegram_columns.sql");
+
+        Assert.Contains("UPDATE players", migration, StringComparison.Ordinal);
+        Assert.Contains("UPDATE game_groups", migration, StringComparison.Ordinal);
+        Assert.Contains("DEPRECATED", migration, StringComparison.Ordinal);
+        Assert.Contains("calendar_subscriptions", migration, StringComparison.Ordinal);
+        Assert.Contains("user_platform", migration, StringComparison.Ordinal);
+        Assert.Contains("user_external_id", migration, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task MigrationV025_ShouldBackfillRescheduleProposals()
+    {
+        var migration = await ReadRepositoryFileAsync("src/GmRelay.Bot/Migrations/V025__reschedule_proposals_telegram_external.sql");
+
+        Assert.Contains("reschedule_proposals", migration, StringComparison.Ordinal);
+        Assert.Contains("proposed_by_external_user_id", migration, StringComparison.Ordinal);
+    }
+
     private static async Task<string> ReadRepositoryFileAsync(string relativePath)
     {
         var directory = new DirectoryInfo(AppContext.BaseDirectory);

tests/GmRelay.Bot.Tests/Infrastructure/Scheduling/SessionSchedulerServiceTests.cs

@@ -149,6 +149,68 @@ public sealed class SessionSchedulerServiceTests
         Assert.Null(ex);
     }
 
+    [Fact]
+    public async Task TickAsync_WhenHandlerThrows_BackoffsForDuration()
+    {
+        var sessionId = Guid.NewGuid();
+        var now = new DateTimeOffset(2026, 5, 15, 10, 0, 0, TimeSpan.Zero);
+        _clock.UtcNow = now;
+        _store.SessionsNeedingConfirmation = [sessionId];
+        _confirmationHandler.ThrowFor.Add(sessionId);
+
+        var sut = CreateSut();
+        await sut.TickAsync(CancellationToken.None);
+        Assert.Single(_confirmationHandler.Calls);
+
+        // Second tick immediately — should be backed off
+        await sut.TickAsync(CancellationToken.None);
+        Assert.Single(_confirmationHandler.Calls);
+    }
+
+    [Fact]
+    public async Task TickAsync_WhenHandlerThrows_AfterBackoffRetriesAgain()
+    {
+        var sessionId = Guid.NewGuid();
+        var now = new DateTimeOffset(2026, 5, 15, 10, 0, 0, TimeSpan.Zero);
+        _clock.UtcNow = now;
+        _store.SessionsNeedingConfirmation = [sessionId];
+        _confirmationHandler.ThrowFor.Add(sessionId);
+
+        var sut = CreateSut();
+        await sut.TickAsync(CancellationToken.None);
+        Assert.Single(_confirmationHandler.Calls);
+
+        // Advance clock past backoff duration (15 min)
+        _clock.UtcNow = now.AddMinutes(16);
+        await sut.TickAsync(CancellationToken.None);
+        Assert.Equal(2, _confirmationHandler.Calls.Count);
+    }
+
+    [Fact]
+    public async Task TickAsync_WhenHandlerSucceedsAfterBackoff_ClearsBackoff()
+    {
+        var sessionId = Guid.NewGuid();
+        var now = new DateTimeOffset(2026, 5, 15, 10, 0, 0, TimeSpan.Zero);
+        _clock.UtcNow = now;
+        _store.SessionsNeedingConfirmation = [sessionId];
+        _confirmationHandler.ThrowFor.Add(sessionId);
+
+        var sut = CreateSut();
+        await sut.TickAsync(CancellationToken.None);
+        Assert.Single(_confirmationHandler.Calls);
+
+        // Remove throw condition, advance past backoff
+        _confirmationHandler.ThrowFor.Remove(sessionId);
+        _clock.UtcNow = now.AddMinutes(16);
+        await sut.TickAsync(CancellationToken.None);
+        Assert.Equal(2, _confirmationHandler.Calls.Count);
+
+        // Next tick should still call because backoff was cleared on success
+        _clock.UtcNow = now.AddMinutes(17);
+        await sut.TickAsync(CancellationToken.None);
+        Assert.Equal(3, _confirmationHandler.Calls.Count);
+    }
+
     private sealed class FakeSendConfirmationHandler : ISendConfirmationHandler
     {
         public List<Guid> Calls { get; } = [];

tests/GmRelay.Bot.Tests/Infrastructure/Telegram/TelegramPlatformMessengerSourceTests.cs

@@ -20,12 +20,13 @@ public sealed class TelegramPlatformMessengerSourceTests
     [InlineData("src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs")]
     [InlineData("src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleVoteHandler.cs")]
     [InlineData("src/GmRelay.Bot/Features/Sessions/RescheduleSession/RescheduleVotingDeadlineService.cs")]
-    [InlineData("src/GmRelay.Bot/Features/Sessions/ExportCalendar/ExportCalendarHandler.cs")]
-    public async Task SessionFlows_ShouldUsePlatformMessengerForOutboundTelegramWork(string relativePath)
+    [InlineData("src/GmRelay.Bot/Features/Sessions/ExportCalendar/ExportCalendarHandler.cs", "src/GmRelay.Shared/Features/Sessions/ExportCalendar/ExportCalendarHandler.cs")]
+    public async Task SessionFlows_ShouldUsePlatformMessengerForOutboundTelegramWork(string relativePath, string? sharedPath = null)
     {
         var source = await ReadRepositoryFileAsync(relativePath);
+        var sharedSource = sharedPath is not null ? await ReadRepositoryFileAsync(sharedPath) : string.Empty;
 
-        Assert.Contains("IPlatformMessenger", source, StringComparison.Ordinal);
+        Assert.Contains("IPlatformMessenger", source + sharedSource, StringComparison.Ordinal);
         Assert.DoesNotContain("BatchMessageEditor.EditBatchMessageAsync", source, StringComparison.Ordinal);
         Assert.DoesNotContain(".AnswerCallbackQuery(", source, StringComparison.Ordinal);
     }

tests/GmRelay.Bot.Tests/Infrastructure/Telegram/TelegramTopicIntegrationSmokeTests.cs

@@ -12,11 +12,11 @@ public sealed class TelegramTopicIntegrationSmokeTests
         Assert.Contains("topic_created_by_bot", migration, StringComparison.Ordinal);
         Assert.Contains("ResolveNewScheduleDestination", createHandler, StringComparison.Ordinal);
         Assert.Contains("message.MessageThreadId", createHandler, StringComparison.Ordinal);
-        Assert.Contains("topic_created_by_bot", createHandler, StringComparison.Ordinal);
+        Assert.Contains("topicCreatedByBot", createHandler, StringComparison.Ordinal);
         Assert.Contains("MissingForumTopicRightsMessage", createHandler, StringComparison.Ordinal);
         Assert.Contains("TopicCreatedByBot", deleteHandler, StringComparison.Ordinal);
         Assert.Contains("ShouldDeleteForumTopic", deleteHandler, StringComparison.Ordinal);
-        Assert.Contains("remainingInTopic", deleteHandler, StringComparison.Ordinal);
+        Assert.Contains("RemainingInTopic", deleteHandler, StringComparison.Ordinal);
     }
 
     [Fact]
@@ -28,6 +28,7 @@ public sealed class TelegramTopicIntegrationSmokeTests
         var cancelHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/CancelSessionHandler.cs");
         var initiateRescheduleHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/RescheduleSession/InitiateRescheduleHandler.cs");
         var rescheduleInputHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs");
+        var sharedRescheduleInputHandler = await ReadRepositoryFileAsync("src/GmRelay.Shared/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs");
         var rescheduleDeadlineService = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/RescheduleSession/RescheduleVotingDeadlineService.cs");
         var telegramMessenger = await ReadRepositoryFileAsync("src/GmRelay.Bot/Infrastructure/Telegram/TelegramPlatformMessenger.cs");
 
@@ -48,9 +49,9 @@ public sealed class TelegramTopicIntegrationSmokeTests
         Assert.Contains("int? MessageThreadId", initiateRescheduleHandler, StringComparison.Ordinal);
         Assert.Contains("TelegramPlatformIds.Group(command.ChatId, command.MessageThreadId)", initiateRescheduleHandler, StringComparison.Ordinal);
 
-        Assert.Contains("int? ThreadId", rescheduleInputHandler, StringComparison.Ordinal);
-        Assert.Contains("s.thread_id AS ThreadId", rescheduleInputHandler, StringComparison.Ordinal);
-        Assert.Contains("TelegramPlatformIds.Group(proposal.TelegramChatId, proposal.ThreadId)", rescheduleInputHandler, StringComparison.Ordinal);
+        Assert.Contains("message.MessageThreadId", rescheduleInputHandler, StringComparison.Ordinal);
+        Assert.Contains("s.thread_id AS ThreadId", sharedRescheduleInputHandler, StringComparison.Ordinal);
+        Assert.Contains("TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId", rescheduleInputHandler, StringComparison.Ordinal);
 
         Assert.Contains("int? ThreadId", rescheduleDeadlineService, StringComparison.Ordinal);
         Assert.Contains("s.thread_id AS ThreadId", rescheduleDeadlineService, StringComparison.Ordinal);
@@ -60,6 +61,19 @@ public sealed class TelegramTopicIntegrationSmokeTests
         Assert.Contains("ExternalThreadId", telegramMessenger, StringComparison.Ordinal);
     }
 
+    [Fact]
+    public async Task WebTemplateBatches_ShouldCreateAndPersistForumTopic()
+    {
+        var sessionService = await ReadRepositoryFileAsync("src/GmRelay.Web/Services/SessionService.cs");
+
+        Assert.Contains("GetChat", sessionService, StringComparison.Ordinal);
+        Assert.Contains("CreateForumTopic", sessionService, StringComparison.Ordinal);
+        Assert.Contains("thread_id, topic_created_by_bot", sessionService, StringComparison.Ordinal);
+        Assert.Contains("ThreadId = messageThreadId", sessionService, StringComparison.Ordinal);
+        Assert.Contains("TopicCreatedByBot = topicCreatedByBot", sessionService, StringComparison.Ordinal);
+        Assert.Contains("messageThreadId: messageThreadId", sessionService, StringComparison.Ordinal);
+    }
+
     private static async Task<string> ReadRepositoryFileAsync(string relativePath)
     {
         var directory = new DirectoryInfo(AppContext.BaseDirectory);

tests/GmRelay.Bot.Tests/Rendering/DiscordSessionBatchRendererTests.cs

@@ -176,6 +176,32 @@ public sealed class DiscordSessionBatchRendererTests
         Assert.Equal("https://example.com/game", embeds[0].Url);
     }
 
+    [Fact]
+    public void Render_ShouldNormalizeBareDomainJoinLinkForEmbedUrl()
+    {
+        var sessionId = Guid.NewGuid();
+        var sessions = new[] { new SessionBatchDto(sessionId, DateTime.UtcNow, SessionStatus.Planned, 4, "mobaxterm.mobatek.net/game") };
+        var participants = Array.Empty<ParticipantBatchDto>();
+
+        var view = SessionBatchViewBuilder.Build("Test", sessions, participants);
+        var (embeds, _) = DiscordSessionBatchRenderer.Render(view);
+
+        Assert.Equal("https://mobaxterm.mobatek.net/game", embeds[0].Url);
+    }
+
+    [Fact]
+    public void Render_ShouldNotSetEmbedUrlWhenJoinLinkIsNotHttpUrl()
+    {
+        var sessionId = Guid.NewGuid();
+        var sessions = new[] { new SessionBatchDto(sessionId, DateTime.UtcNow, SessionStatus.Planned, 4, "test") };
+        var participants = Array.Empty<ParticipantBatchDto>();
+
+        var view = SessionBatchViewBuilder.Build("Test", sessions, participants);
+        var (embeds, _) = DiscordSessionBatchRenderer.Render(view);
+
+        Assert.Null(embeds[0].Url);
+    }
+
     [Fact]
     public void Render_ShouldEmbedCorrectFieldValues()
     {

tests/GmRelay.Bot.Tests/Web/HomePageSourceTests.cs

@@ -0,0 +1,35 @@
+namespace GmRelay.Bot.Tests.Web;
+
+public sealed class HomePageSourceTests
+{
+    [Fact]
+    public async Task HomePage_ShouldShowPlatformBadgeForGroups()
+    {
+        var source = await ReadRepositoryFileAsync("src/GmRelay.Web/Components/Pages/Home.razor");
+
+        Assert.Contains("platform-badge", source, StringComparison.Ordinal);
+        Assert.Contains("FormatPlatform", source, StringComparison.Ordinal);
+        Assert.Contains("group.Platform", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task SessionService_ShouldUseSessionTitleWhenDiscordGroupNameIsOnlyId()
+    {
+        var source = await ReadRepositoryFileAsync("src/GmRelay.Web/Services/SessionService.cs");
+
+        Assert.Contains("latest_session.title", source, StringComparison.Ordinal);
+        Assert.Contains("NULLIF(g.name, g.external_group_id)", source, StringComparison.Ordinal);
+    }
+
+    private static async Task<string> ReadRepositoryFileAsync(string relativePath)
+    {
+        var dir = AppContext.BaseDirectory;
+        while (!string.IsNullOrEmpty(dir) && !File.Exists(Path.Combine(dir, "Directory.Build.props")))
+        {
+            dir = Directory.GetParent(dir)?.FullName;
+        }
+
+        var repoRoot = dir ?? throw new InvalidOperationException("Could not find repo root");
+        return await File.ReadAllTextAsync(Path.Combine(repoRoot, relativePath));
+    }
+}

tests/GmRelay.Bot.Tests/packages.lock.json

@@ -392,8 +392,8 @@
           "Aspire.Npgsql": "[13.2.2, )",
           "Dapper": "[2.1.72, )",
           "Dapper.AOT": "[1.0.48, )",
-          "GmRelay.ServiceDefaults": "[2.5.0, )",
-          "GmRelay.Shared": "[2.5.0, )",
+          "GmRelay.ServiceDefaults": "[3.0.9, )",
+          "GmRelay.Shared": "[3.0.9, )",
           "Npgsql": "[10.0.2, )",
           "Telegram.Bot": "[22.9.5.3, )",
           "dbup-postgresql": "[7.0.1, )"
@@ -404,8 +404,9 @@
         "dependencies": {
           "Aspire.Npgsql": "[13.2.2, )",
           "Dapper": "[2.1.72, )",
-          "GmRelay.ServiceDefaults": "[2.5.0, )",
-          "GmRelay.Shared": "[2.5.0, )",
+          "Dapper.AOT": "[1.0.48, )",
+          "GmRelay.ServiceDefaults": "[3.0.9, )",
+          "GmRelay.Shared": "[3.0.9, )",
           "NetCord.Hosting": "[1.0.0-alpha.489, )",
           "NetCord.Hosting.Services": "[1.0.0-alpha.489, )",
           "NetCord.Services": "[1.0.0-alpha.489, )",
@@ -436,8 +437,8 @@
         "dependencies": {
           "Aspire.Npgsql": "[13.2.2, )",
           "Dapper": "[2.1.72, )",
-          "GmRelay.ServiceDefaults": "[2.5.0, )",
-          "GmRelay.Shared": "[2.5.0, )",
+          "GmRelay.ServiceDefaults": "[3.0.9, )",
+          "GmRelay.Shared": "[3.0.9, )",
           "Npgsql": "[10.0.2, )",
           "Telegram.Bot": "[22.9.6.1, )"
         }