feat: add telegram mini app dashboard

.env.example

@@ -6,6 +6,10 @@ TELEGRAM_BOT_TOKEN=YOUR_BOT_TOKEN_HERE
 # Найти его можно в информации о боте у @BotFather.
 TELEGRAM_BOT_USERNAME=YOUR_BOT_USERNAME_HERE
 
+# HTTPS URL Mini App dashboard, например: https://your-domain.example/miniapp
+# Используется ботом для кнопки меню Telegram и кнопки /start.
+TELEGRAM_MINI_APP_URL=
+
 # Пароль для базы данных PostgreSQL
 POSTGRES_PASSWORD=StrongPasswordForDatabase
 

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 1.5.0
+  VERSION: 1.9.0
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)
@@ -64,6 +64,7 @@ jobs:
           echo "TELEGRAM_BOT_TOKEN=${{ secrets.TELEGRAM_BOT_TOKEN }}" > .env
           echo "POSTGRES_PASSWORD=${{ secrets.POSTGRES_PASSWORD }}" >> .env
           echo "TELEGRAM_BOT_USERNAME=${{ secrets.TELEGRAM_BOT_USERNAME }}" >> .env
+          echo "TELEGRAM_MINI_APP_URL=${{ secrets.TELEGRAM_MINI_APP_URL }}" >> .env
 
       - name: Deploy Containers
         run: |

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>1.5.0</Version>
+    <Version>1.9.0</Version>
     <TargetFramework>net10.0</TargetFramework>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>

README.md

@@ -4,7 +4,7 @@
 
 Проект разработан с упором на производительность, архитектуру Vertical Slice, Native AOT (для бота) и удобство развертывания с использованием .NET Aspire.
 
-**Текущая версия:** `v1.5.0`.
+**Текущая версия:** `v1.9.0`.
 
 ---
 
@@ -12,17 +12,22 @@
 
 ### 🤖 Telegram Бот
 - **📅 Создание расписаний (Batch Sessions)**: Создавайте сразу несколько игр одним сообщением (на неделю или месяц вперед).
+- **⚡ Быстрые повторы расписания**: Для регулярной кампании можно указать одну дату, количество игр и интервал, а бот сам развернёт повторяющийся batch.
 - **✋ Интерактивная запись и выход**: Игроки записываются на конкретные даты и самостоятельно снимают запись нажатием одной кнопки.
 - **👥 Лимит мест и лист ожидания**: ГМ задаёт максимальный состав, бот не переполняет сессию, автоматически ведёт очередь ожидания и освобождённое место отдаёт первому ожидающему.
 - **📁 Поддержка Форумов (Telegram Topics)**: Бот автоматически создает тему во вложенных чатах Telegram под каждую новую пачку игр.
-- **❌ Управление сессиями**: Мастер может отменять отдельные игры прямо в общем сообщении расписания.
+- **❌ Управление сессиями**: Owner и назначенные co-GM могут создавать, отменять, удалять и переносить игры прямо из Telegram.
+- **🔄 Голосование за перенос**: При переносе сессии GM предлагает 2-3 новых времени и дедлайн, игроки голосуют кнопками, а бот показывает текущие результаты и применяет победивший вариант.
 - **🔔 Персональные уведомления**: Игроки получают DM о RSVP за 24 часа, напоминание за 1 час, ссылку перед игрой, отмены и переносы; групповые уведомления при этом остаются.
 - **🗓 Экспорт в Календарь**: Генерация файла `.ics` для добавления всех игр в Google, Apple или Яндекс Календарь одной командой.
 - **🚀 Native AOT**: Скомпилирован в нативный бинарный файл. Мгновенный запуск и минимальное потребление памяти. Идеально для **Raspberry Pi**.
 
 ### 🌐 Web Dashboard (Blazor Server)
 - **🔐 Авторизация через Telegram**: Безопасный вход с использованием Telegram Login Widget (HMAC-SHA256 валидация).
+- **📱 Telegram Mini App Dashboard**: Мобильная версия dashboard открывается прямо из Telegram, проверяет WebApp `initData` на сервере и использует те же права owner/co-GM, что и обычный Web Dashboard.
 - **📝 Удобное редактирование**: Веб-интерфейс для детального редактирования сессий, изменения дат, названий и статусов.
+- **🤝 Co-GM и делегирование**: Owner группы назначает помощников по Telegram ID, а co-GM получает доступ к управлению расписанием в Telegram и Web Dashboard.
+- **📋 Шаблоны кампаний**: Owner и co-GM управляют типовыми параметрами кампаний в отдельной вкладке `Шаблоны`, а на странице группы запускают новый повторяющийся batch из выбранного шаблона.
 - **🧩 Bulk-операции для Batch Sessions**: ГМ может обновить общий title/link, перенести всю пачку на фиксированный шаг и клонировать batch на следующую неделю или месяц.
 - **🔕 Режим уведомлений batch**: Для каждой пачки можно выбрать `В группе и в личку` или `Только в группе`.
 - **⬆️ Управление очередью**: Веб-интерфейс показывает заполненность, лист ожидания и позволяет ГМу поднять первого игрока из очереди.
@@ -70,6 +75,10 @@ TELEGRAM_BOT_TOKEN=ваш_токен_здесь
 # Используется для работы виджета авторизации (Telegram Login Widget).
 TELEGRAM_BOT_USERNAME=ваше_имя_бота_здесь
 
+# HTTPS URL Mini App dashboard, например: https://your-domain.example/miniapp.
+# Используется кнопкой меню Telegram и кнопкой /start.
+TELEGRAM_MINI_APP_URL=https://your-domain.example/miniapp
+
 # Пароль для базы данных PostgreSQL
 POSTGRES_PASSWORD=ваш_надежный_пароль
 
@@ -79,6 +88,8 @@ GMRELAY_WEB_PORT=8080
 
 *(Опционально)* Настройте домен Telegram бота в @BotFather командой `/setdomain` для работы виджета авторизации на вашем сайте.
 
+Для Telegram Mini App настройте в @BotFather домен Web Dashboard и menu button на URL из `TELEGRAM_MINI_APP_URL`. Бот также показывает кнопку `Открыть dashboard` в ответе на `/start`, если переменная задана.
+
 ### 3. Запуск
 Выполните команду:
 ```bash
@@ -103,7 +114,7 @@ docker compose up -d
     * `Закрепление сообщений` — рекомендуется.
 
 > [!TIP]
-> Колонку "Мастер" (GM) бот определяет по первому человеку, который создал сессию в этой группе. Только этот пользователь сможет отменять игры через кнопки бота и редактировать их в веб-интерфейсе.
+> Owner группы определяется по первому человеку, который создал сессию в этой группе. Owner может назначать co-GM в Web Dashboard; owner и co-GM могут управлять сессиями через кнопки бота и веб-интерфейс.
 
 ---
 
@@ -123,22 +134,58 @@ docker compose up -d
 
 Строка `Мест:` необязательна. Если она указана, игроки сверх лимита попадут в лист ожидания, а ГМ сможет повысить первого ожидающего через кнопку в Telegram или Web Dashboard.
 
+Для регулярной кампании можно не перечислять все даты вручную. Укажите одну строку `Время:`, количество игр и интервал в днях:
+
+```text
+/newsession
+Название: Kingmaker
+Время: 30.04.2026 19:30
+Игр: 6
+Интервал: 7
+Мест: 5
+Ссылка: https://discord.gg/invite-link
+```
+
+Бот создаст 6 игр с недельным шагом. Вместо `Игр:` также принимается `Сессий:` или `Повторов:`, вместо `Интервал:` — `Шаг:`.
+
 Игрок может самостоятельно снять запись кнопкой `🚪 Выйти` в сообщении расписания. Если он был в основном составе и в листе ожидания есть игроки, бот автоматически переводит первого ожидающего в основной состав и обновляет сообщение пачки.
 
-### Bulk-операции в Web Dashboard
+### Делегирование управления
-На странице группы Web Dashboard показывает отдельный блок для каждой пачки игр. ГМ может:
+На странице группы Web Dashboard показывает owner и список co-GM. Owner может добавить помощника по Telegram ID, имени и username, а также снять роль co-GM. Назначенный co-GM видит группу в панели управления и может редактировать сессии, управлять batch-операциями, очередью, переносами и удалением игр, но не может назначать других co-GM.
+
+### Перенос сессии голосованием
+Owner или co-GM нажимает кнопку `⏰ Перенести` у нужной сессии и отправляет в чат 2-3 варианта нового времени вместе с дедлайном:
+
+```text
+25.04.2026 19:30
+26.04.2026 18:00
+Дедлайн: 25.04.2026 12:00
+```
+
+Дедлайн должен быть в будущем и раньше первого предложенного времени. Участники выбирают один вариант кнопкой в Telegram, могут изменить голос до дедлайна и видят текущие результаты в сообщении голосования. По дедлайну бот выбирает вариант с наибольшим числом голосов, переносит сессию, сбрасывает RSVP и обновляет batch-сообщение. Если голосов нет или есть ничья, перенос отклоняется, а время сессии остаётся прежним.
+
+### Шаблоны и bulk-операции в Web Dashboard
+Вкладка `Шаблоны` в левом меню вынесена отдельно от страницы группы. Owner и co-GM выбирают группу, сохраняют шаблон кампании с названием, ссылкой, количеством игр, интервалом, лимитом мест и режимом уведомлений, а также удаляют устаревшие шаблоны.
+
+На странице группы Web Dashboard показывает только применение сохранённых шаблонов и отдельный блок для каждой пачки игр. Owner и co-GM могут:
+- создать новый batch из шаблона, выбрав только первую дату расписания;
 - обновить общий `title` и `link` сразу у всех сессий batch;
 - выбрать режим уведомлений: дублировать важные сообщения игрокам в личку или оставить только групповые уведомления;
 - перенести пачку, задав новую первую дату и фиксированный шаг между играми в днях;
 - клонировать batch на следующую неделю или следующий календарный месяц.
 
-После редактирования или переноса исходное Telegram-сообщение расписания перерисовывается. При клонировании создаётся новая пачка с новым Telegram-сообщением и пустым составом игроков.
+После создания из шаблона или клонирования появляется новая пачка с новым Telegram-сообщением и пустым составом игроков. После редактирования или переноса исходное Telegram-сообщение расписания перерисовывается.
 
 Если включён режим `В группе и в личку`, бот дополнительно отправляет игрокам персональные сообщения о RSVP за 24 часа, напоминание за 1 час, ссылку перед стартом, отмену и перенос. Если Telegram не позволяет написать игроку в ЛС, бот логирует ошибку и продолжает отправку остальным участникам.
 
+### Telegram Mini App Dashboard
+Owner и co-GM могут открыть мобильный dashboard прямо из Telegram через кнопку меню бота или кнопку `Открыть dashboard` после `/start`. Страница `/miniapp` получает `Telegram.WebApp.initData`, отправляет его на серверный endpoint `/auth/telegram-webapp`, проходит HMAC-проверку токеном бота и выдаёт обычную cookie-сессию dashboard.
+
+После входа Mini App использует те же страницы, что и Web Dashboard: список групп, карточки сессий, редактирование игры, повышение игрока из листа ожидания, применение шаблонов и bulk-операции batch. Доступ к чужим группам не появляется: все данные по-прежнему фильтруются через `AuthorizedSessionService` по роли owner/co-GM.
+
 ### Другие команды
 - `/listsessions` — Показать список всех актуальных игр в этой группе.
-- `/reschedulesession` — Перенести сессию на другое время с голосованием игроков.
+- `⏰ Перенести` в сообщении расписания — Запустить голосование по 2-3 вариантам нового времени.
 - `/deletesession` — Удалить сессию.
 - `/exportcalendar` — Получить `.ics` файл с играми.
 - `/help` — Справка по формату.

compose.yaml

@@ -17,7 +17,7 @@ services:
       retries: 10
 
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:1.5.0
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:1.9.0
     restart: always
     depends_on:
       db:
@@ -25,11 +25,12 @@ services:
     environment:
       - "ConnectionStrings__gmrelaydb=Host=db;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}"
       - "Telegram__BotToken=${TELEGRAM_BOT_TOKEN:?Set TELEGRAM_BOT_TOKEN in .env}"
+      - "Telegram__MiniAppUrl=${TELEGRAM_MINI_APP_URL:-}"
     networks:
       - gmrelay
 
   web:
-    image: git.codeanddice.ru/toutsu/gmrelay-web:1.5.0
+    image: git.codeanddice.ru/toutsu/gmrelay-web:1.9.0
     restart: always
     depends_on:
       db:
@@ -38,6 +39,7 @@ services:
       - "ConnectionStrings__gmrelaydb=Host=db;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}"
       - "Telegram__BotToken=${TELEGRAM_BOT_TOKEN:?Set TELEGRAM_BOT_TOKEN in .env}"
       - "Telegram__BotUsername=${TELEGRAM_BOT_USERNAME:?Set TELEGRAM_BOT_USERNAME in .env}"
+      - "Telegram__MiniAppUrl=${TELEGRAM_MINI_APP_URL:-}"
     ports:
       - "${GMRELAY_WEB_PORT:-8080}:8080"
     volumes:

docs/superpowers/plans/2026-04-28-telegram-mini-app-dashboard.md

@@ -0,0 +1,69 @@
+# Telegram Mini App Dashboard Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Add a Telegram Mini App mobile dashboard that reuses the existing Web Dashboard and validates Telegram WebApp `initData` on the server.
+
+**Architecture:** Extend `TelegramAuthService` for WebApp init data, add a `/miniapp` Blazor entry page plus `/auth/telegram-webapp` endpoint, and add bot entry points through an inline WebApp button and optional menu button setup. Existing application/domain services remain the only write path.
+
+**Tech Stack:** .NET 10, Blazor Server, Telegram.Bot, xUnit, Dapper/Npgsql-backed existing services.
+
+---
+
+### Task 1: Telegram WebApp Authentication
+
+**Files:**
+- Modify: `src/GmRelay.Web/Services/TelegramAuthService.cs`
+- Modify: `src/GmRelay.Web/Program.cs`
+- Test: `tests/GmRelay.Bot.Tests/Web/TelegramAuthServiceTests.cs`
+
+- [ ] Write failing tests for valid WebApp `initData`, tampered hash, and expired auth date.
+- [ ] Run `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter TelegramAuthServiceTests`.
+- [ ] Implement WebApp HMAC verification using the Telegram `WebAppData` secret derivation.
+- [ ] Add `/auth/telegram-webapp` endpoint that signs in using the same claims as `/auth/telegram`.
+- [ ] Re-run the filtered tests.
+
+### Task 2: Mini App Entry Page
+
+**Files:**
+- Create: `src/GmRelay.Web/Components/Pages/MiniApp.razor`
+- Modify: `src/GmRelay.Web/Components/App.razor`
+- Modify: `src/GmRelay.Web/wwwroot/app.css`
+- Test: `tests/GmRelay.Bot.Tests/Web/MiniAppDashboardTests.cs`
+
+- [ ] Write failing tests that assert `/miniapp`, `telegram-web-app.js`, `authenticateTelegramMiniApp`, and Mini App CSS hooks exist.
+- [ ] Run `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter MiniAppDashboardTests`.
+- [ ] Implement `/miniapp` to post `Telegram.WebApp.initData` to `/auth/telegram-webapp`, expand/ready the Mini App, and show fallback login when opened outside Telegram.
+- [ ] Add CSS for a mobile-first Mini App shell and compact dashboard spacing.
+- [ ] Re-run the filtered tests.
+
+### Task 3: Bot Entry Points
+
+**Files:**
+- Create: `src/GmRelay.Bot/Infrastructure/Telegram/TelegramMiniAppMenuButtonService.cs`
+- Modify: `src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs`
+- Modify: `src/GmRelay.Bot/Program.cs`
+- Test: `tests/GmRelay.Bot.Tests/Infrastructure/Telegram/TelegramMiniAppEntryPointTests.cs`
+
+- [ ] Write failing tests that assert `/start` exposes a WebApp button and startup registers the menu button service.
+- [ ] Run `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter TelegramMiniAppEntryPointTests`.
+- [ ] Add a configurable `Telegram:MiniAppUrl` entry point; when missing, keep existing command behavior.
+- [ ] Add hosted service that calls `SetChatMenuButton` with `MenuButtonWebApp` only when the URL is configured.
+- [ ] Re-run the filtered tests.
+
+### Task 4: Docs, Versions, and Release Prep
+
+**Files:**
+- Modify: `Directory.Build.props`
+- Modify: `compose.yaml`
+- Modify: `.gitea/workflows/deploy.yml`
+- Modify: `src/GmRelay.Web/wwwroot/app.css`
+- Modify: `src/GmRelay.Web/Components/Layout/NavMenu.razor`
+- Modify: `README.md`
+- Wiki: `Home`, `Быстрый старт`, `Руководство ГМа`, `Развёртывание`, `Архитектура`, `Разработка`
+
+- [ ] Update project/container/workflow/UI versions to `1.9.0`.
+- [ ] Document `TELEGRAM_MINI_APP_URL`, BotFather `/setmenubutton`, `/miniapp`, and WebApp auth.
+- [ ] Run `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --collect:"XPlat Code Coverage"`.
+- [ ] Run `dotnet build GM-Relay.slnx -c Release`.
+- [ ] Commit, push, close issue #17, update wiki, create tag/release `v1.9.0`.

docs/superpowers/specs/2026-04-28-telegram-mini-app-dashboard-design.md

@@ -0,0 +1,44 @@
+# Telegram Mini App Dashboard Design
+
+## Goal
+
+Issue #17 adds a Telegram Mini App dashboard as the mobile entry point for the existing Web Dashboard. Owner and co-GM users must be able to open the dashboard from Telegram, pass server-side Telegram WebApp `initData` validation, and manage only their own groups.
+
+## Scope
+
+- Add Mini App authentication using Telegram WebApp `initData`.
+- Add a `/miniapp` entry page that signs the user into the existing cookie auth flow, then opens the regular dashboard UI in mobile-first mode.
+- Reuse `AuthorizedSessionService`, `SessionService`, and existing Blazor pages for groups, sessions, templates, waitlist promotion, edit forms, and bulk batch operations.
+- Add bot entry points: a Mini App button in `/start` and a configurable default menu button when `Telegram:MiniAppUrl` is set.
+- Update README, wiki, deployment config, and visible version strings to `1.9.0`.
+
+## Architecture
+
+The Mini App is not a second dashboard implementation. It is a Telegram-authenticated entrance into the existing Blazor dashboard. This keeps authorization, domain operations, Telegram message synchronization, and Web Dashboard behavior in one place.
+
+`TelegramAuthService` gains a second verification method for WebApp `initData`. The server accepts the raw URL-encoded init payload at `/auth/telegram-webapp`, verifies the Telegram HMAC with the bot token, extracts the user id/name from the embedded `user` JSON, and issues the same auth cookie as the login widget endpoint.
+
+`/miniapp` loads `telegram-web-app.js`, posts `window.Telegram.WebApp.initData` to the server endpoint, expands the WebApp viewport, and redirects to `/`. If a user opens `/miniapp` outside Telegram, the page shows the regular login fallback.
+
+## Data Flow
+
+1. User opens the Mini App from the bot menu button or `/start` inline button.
+2. Telegram injects `initData` into the WebApp JavaScript API.
+3. `/miniapp` posts `{ initData }` to `/auth/telegram-webapp`.
+4. The server verifies the WebApp signature and expiry.
+5. The server creates the same claims used by Telegram Login Widget.
+6. Existing Blazor pages load groups through `AuthorizedSessionService`.
+7. Any edit, waitlist, template, or batch action still goes through existing services and keeps Telegram messages synchronized.
+
+## Error Handling
+
+- Missing or invalid init data returns `401` and leaves the user on the Mini App page.
+- Expired auth data is rejected with the same 24-hour window used by the Login Widget.
+- A verified Telegram user with no owner/co-GM groups sees the existing empty dashboard state.
+- Direct navigation to a foreign group/session still redirects to `/access-denied` through existing authorization checks.
+
+## Testing
+
+- Unit tests cover valid and invalid WebApp `initData`.
+- File-level regression tests ensure `/miniapp`, `/auth/telegram-webapp`, Telegram WebApp script loading, bot Mini App button, menu button setup, and mobile Mini App CSS hooks remain present.
+- Existing `AuthorizedSessionServiceTests` continue covering owner/co-GM access behavior.

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

@@ -16,7 +16,7 @@ public sealed record CancelSessionCommand(
     int MessageId);
 
 // DTOs for AOT compilation
-internal sealed record CancelSessionInfoDto(string Title, Guid BatchId, long GmId, string NotificationMode);
+internal sealed record CancelSessionInfoDto(string Title, Guid BatchId, bool CanManage, string NotificationMode);
 
 public sealed class CancelSessionHandler(
     NpgsqlDataSource dataSource,
@@ -29,13 +29,23 @@ public sealed class CancelSessionHandler(
         await using var connection = await dataSource.OpenConnectionAsync(ct);
         await using var transaction = await connection.BeginTransactionAsync(ct);
         
-        // 1. Проверяем, что запрос делает ГМ данной сессии
+        // 1. Проверяем, что запрос делает управляющий данной группы.
         var session = await connection.QuerySingleOrDefaultAsync<CancelSessionInfoDto>(
-            @"SELECT s.title as Title, s.batch_id as BatchId, g.gm_telegram_id as GmId, s.notification_mode as NotificationMode
+            """
+            SELECT s.title AS Title,
+                   s.batch_id AS BatchId,
+                   s.notification_mode AS NotificationMode,
+                   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
-              JOIN game_groups g ON s.group_id = g.id
+            WHERE s.id = @SessionId
-              WHERE s.id = @SessionId",
+            """,
-            new { command.SessionId }, transaction);
+            new { command.SessionId, command.TelegramUserId }, transaction);
 
         if (session == null)
         {
@@ -43,9 +53,9 @@ public sealed class CancelSessionHandler(
             return;
         }
 
-        if (session.GmId != command.TelegramUserId)
+        if (!session.CanManage)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только Мастер Игры (GM) может отменять сессию.", showAlert: true, cancellationToken: ct);
+            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только owner или co-GM может отменять сессию.", showAlert: true, cancellationToken: ct);
             return;
         }
 

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

@@ -7,6 +7,8 @@ using Telegram.Bot.Types;
 
 namespace GmRelay.Bot.Features.Sessions.CreateSession;
 
+internal sealed record SessionCreationGroupAccessDto(Guid GroupId, bool CanManage);
+
 public sealed class CreateSessionHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient botClient,
@@ -40,11 +42,19 @@ public sealed class CreateSessionHandler(
                 cancellationToken: cancellationToken);
         }
 
+        foreach (var recurringInput in parseResult.InvalidRecurringInputs)
+        {
+            await botClient.SendMessage(
+                message.Chat.Id,
+                $"⚠️ Предупреждение: некорректный повтор расписания '{recurringInput}'. Укажите число игр 1-52 и шаг 1-365 дней.",
+                cancellationToken: cancellationToken);
+        }
+
         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",
+                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\n\nДля повтора можно указать одну дату и строки:\nИгр: 4\nИнтервал: 7",
                 cancellationToken: cancellationToken);
             return;
         }
@@ -74,16 +84,64 @@ public sealed class CreateSessionHandler(
                 new { TgId = gmId, Name = gmName, Username = gmUsername },
                 transaction);
 
-            var groupId = await connection.ExecuteScalarAsync<Guid>(
+            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.telegram_id = @GmId
+                       ) AS CanManage
+                FROM game_groups g
+                WHERE g.telegram_chat_id = @ChatId
+                """,
+                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)
                     VALUES (@ChatId, @ChatName, @GmId)
-                ON CONFLICT (telegram_chat_id) DO UPDATE SET name = EXCLUDED.name
                     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 p.telegram_id = @GmId
+                    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);
+            }
+
             int? messageThreadId = null;
             if (message.Chat.IsForum)
             {

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

@@ -9,17 +9,21 @@ internal sealed record NewSessionParseResult(
     IReadOnlyList<DateTimeOffset> ScheduledTimes,
     IReadOnlyList<string> PastTimeInputs,
     IReadOnlyList<string> InvalidTimeInputs,
-    IReadOnlyList<string> InvalidSeatLimitInputs)
+    IReadOnlyList<string> InvalidSeatLimitInputs,
+    IReadOnlyList<string> InvalidRecurringInputs)
 {
     public bool IsValid =>
         !string.IsNullOrWhiteSpace(Title) &&
         !string.IsNullOrWhiteSpace(Link) &&
         ScheduledTimes.Count > 0 &&
-        InvalidSeatLimitInputs.Count == 0;
+        InvalidSeatLimitInputs.Count == 0 &&
+        InvalidRecurringInputs.Count == 0;
 }
 
 internal static class NewSessionCommandParser
 {
+    private const int MaxRecurringSessionCount = 52;
+    private const int MaxRecurringIntervalDays = 365;
     private const string TitlePrefix = "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435:";
     private const string TimePrefix = "\u0412\u0440\u0435\u043c\u044f:";
     private const string LinkPrefix = "\u0421\u0441\u044b\u043b\u043a\u0430:";
@@ -29,16 +33,30 @@ internal static class NewSessionCommandParser
         "\u041b\u0438\u043c\u0438\u0442:",
         "\u041c\u0430\u043a\u0441\u0438\u043c\u0443\u043c:"
     ];
+    private static readonly string[] RecurringCountPrefixes =
+    [
+        "\u0418\u0433\u0440:",
+        "\u0421\u0435\u0441\u0441\u0438\u0439:",
+        "\u041f\u043e\u0432\u0442\u043e\u0440\u043e\u0432:"
+    ];
+    private static readonly string[] RecurringIntervalPrefixes =
+    [
+        "\u0428\u0430\u0433:",
+        "\u0418\u043d\u0442\u0435\u0440\u0432\u0430\u043b:"
+    ];
 
     public static NewSessionParseResult Parse(string? text, DateTimeOffset nowUtc)
     {
         string? title = null;
         string? link = null;
         int? maxPlayers = null;
+        int? recurringCount = null;
+        var recurringIntervalDays = 7;
         var scheduledTimes = new List<DateTimeOffset>();
         var pastTimeInputs = new List<string>();
         var invalidTimeInputs = new List<string>();
         var invalidSeatLimitInputs = new List<string>();
+        var invalidRecurringInputs = new List<string>();
 
         foreach (var line in (text ?? string.Empty).Split('\n', StringSplitOptions.TrimEntries))
         {
@@ -71,6 +89,42 @@ internal static class NewSessionCommandParser
                 continue;
             }
 
+            var recurringCountPrefix = RecurringCountPrefixes.FirstOrDefault(prefix =>
+                line.StartsWith(prefix, StringComparison.OrdinalIgnoreCase));
+            if (recurringCountPrefix is not null)
+            {
+                var recurringInput = line[recurringCountPrefix.Length..].Trim();
+                if (int.TryParse(recurringInput, out var parsedCount) &&
+                    parsedCount is >= 1 and <= MaxRecurringSessionCount)
+                {
+                    recurringCount = parsedCount;
+                }
+                else
+                {
+                    invalidRecurringInputs.Add(recurringInput);
+                }
+
+                continue;
+            }
+
+            var recurringIntervalPrefix = RecurringIntervalPrefixes.FirstOrDefault(prefix =>
+                line.StartsWith(prefix, StringComparison.OrdinalIgnoreCase));
+            if (recurringIntervalPrefix is not null)
+            {
+                var recurringInput = line[recurringIntervalPrefix.Length..].Trim();
+                if (int.TryParse(recurringInput, out var parsedInterval) &&
+                    parsedInterval is >= 1 and <= MaxRecurringIntervalDays)
+                {
+                    recurringIntervalDays = parsedInterval;
+                }
+                else
+                {
+                    invalidRecurringInputs.Add(recurringInput);
+                }
+
+                continue;
+            }
+
             if (!line.StartsWith(TimePrefix, StringComparison.OrdinalIgnoreCase))
             {
                 continue;
@@ -92,6 +146,14 @@ internal static class NewSessionCommandParser
             scheduledTimes.Add(scheduledAt);
         }
 
+        if (recurringCount.HasValue && scheduledTimes.Count == 1)
+        {
+            var firstScheduledTime = scheduledTimes[0];
+            scheduledTimes = Enumerable.Range(0, recurringCount.Value)
+                .Select(index => firstScheduledTime.AddDays(recurringIntervalDays * index))
+                .ToList();
+        }
+
         return new NewSessionParseResult(
             title,
             link,
@@ -99,6 +161,7 @@ internal static class NewSessionCommandParser
             scheduledTimes,
             pastTimeInputs,
             invalidTimeInputs,
-            invalidSeatLimitInputs);
+            invalidSeatLimitInputs,
+            invalidRecurringInputs);
     }
 }

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

@@ -13,7 +13,7 @@ public sealed record PromoteWaitlistedPlayerCommand(
     long ChatId,
     int MessageId);
 
-internal sealed record PromoteWaitlistSessionDto(string Title, Guid BatchId, long GmId, int? MaxPlayers);
+internal sealed record PromoteWaitlistSessionDto(string Title, Guid BatchId, bool CanManage, int? MaxPlayers);
 internal sealed record WaitlistedParticipantDto(Guid ParticipantRowId, string DisplayName);
 
 public sealed class PromoteWaitlistedPlayerHandler(
@@ -34,13 +34,18 @@ public sealed class PromoteWaitlistedPlayerHandler(
                 SELECT s.title AS Title,
                        s.batch_id AS BatchId,
                        s.max_players AS MaxPlayers,
-                       g.gm_telegram_id AS GmId
+                       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
-                JOIN game_groups g ON s.group_id = g.id
                 WHERE s.id = @SessionId
                 FOR UPDATE
                 """,
-                new { command.SessionId },
+                new { command.SessionId, command.TelegramUserId },
                 transaction);
 
             if (session is null)
@@ -50,10 +55,10 @@ public sealed class PromoteWaitlistedPlayerHandler(
                 return;
             }
 
-            if (session.GmId != command.TelegramUserId)
+            if (!session.CanManage)
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только Мастер Игры (GM) может поднимать игроков из листа ожидания.", showAlert: true, cancellationToken: ct);
+                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только owner или co-GM может поднимать игроков из листа ожидания.", showAlert: true, cancellationToken: ct);
                 return;
             }
 

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

@@ -12,7 +12,7 @@ public sealed record DeleteSessionCommand(
     long ChatId,
     int MessageId);
 
-internal sealed record DeleteSessionInfoDto(string Title, Guid BatchId, long GmId, int? ThreadId);
+internal sealed record DeleteSessionInfoDto(string Title, Guid BatchId, bool CanManage, int? ThreadId);
 
 public sealed class DeleteSessionHandler(
     NpgsqlDataSource dataSource,
@@ -24,13 +24,23 @@ public sealed class DeleteSessionHandler(
         await using var connection = await dataSource.OpenConnectionAsync(ct);
         await using var transaction = await connection.BeginTransactionAsync(ct);
 
-        // 1. Fetch session and verify GM
+        // 1. Fetch session and verify group manager.
         var session = await connection.QuerySingleOrDefaultAsync<DeleteSessionInfoDto>(
-            @"SELECT s.title as Title, s.batch_id as BatchId, s.thread_id as ThreadId, g.gm_telegram_id as GmId
+            """
+            SELECT s.title AS Title,
+                   s.batch_id AS BatchId,
+                   s.thread_id AS ThreadId,
+                   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
-              JOIN game_groups g ON s.group_id = g.id
+            WHERE s.id = @SessionId
-              WHERE s.id = @SessionId",
+            """,
-            new { command.SessionId }, transaction);
+            new { command.SessionId, command.TelegramUserId }, transaction);
 
         if (session == null)
         {
@@ -38,9 +48,9 @@ public sealed class DeleteSessionHandler(
             return;
         }
 
-        if (session.GmId != command.TelegramUserId)
+        if (!session.CanManage)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только Мастер Игры (GM) может удалять сессию.", showAlert: true, cancellationToken: ct);
+            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только owner или co-GM может удалять сессию.", showAlert: true, cancellationToken: ct);
             return;
         }
 
@@ -77,16 +87,23 @@ public sealed class DeleteSessionHandler(
             @"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,
-                     g.gm_telegram_id as GmId
+                     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, g.gm_telegram_id
+              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
@@ -110,8 +127,8 @@ public sealed class DeleteSessionHandler(
             text += $"🔹 <b>{s.ScheduledAt.FormatMoscow()}</b> — {System.Net.WebUtility.HtmlEncode(s.Title)} (Места: {seats}{waitlist})\n";
         }
 
-        var isGm = command.TelegramUserId == sessionsList.First().GmId;
+        var canManage = sessionsList.First().CanManage;
-        var keyboard = isGm 
+        var keyboard = canManage
             ? new Telegram.Bot.Types.ReplyMarkups.InlineKeyboardMarkup(
                 sessionsList.Select(s => new[] { Telegram.Bot.Types.ReplyMarkups.InlineKeyboardButton.WithCallbackData($"🗑 Удалить {s.ScheduledAt.FormatMoscowShort()}", $"delete_session:{s.Id}") }))
             : null;

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

@@ -6,7 +6,7 @@ using Telegram.Bot.Types;
 
 namespace GmRelay.Bot.Features.Sessions.ListSessions;
 
-internal sealed record SessionListItemDto(Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers, int PlayerCount, int WaitlistCount, long GmId);
+internal sealed record SessionListItemDto(Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers, int PlayerCount, int WaitlistCount, bool CanManage);
 
 public sealed class ListSessionsHandler(
     NpgsqlDataSource dataSource,
@@ -20,16 +20,23 @@ public sealed class ListSessionsHandler(
             @"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,
-                     g.gm_telegram_id as GmId
+                     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, g.gm_telegram_id
+              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
@@ -56,8 +63,8 @@ public sealed class ListSessionsHandler(
             text += $"🔹 <b>{s.ScheduledAt.FormatMoscow()}</b> — {System.Net.WebUtility.HtmlEncode(s.Title)} (Места: {seats}{waitlist})\n";
         }
 
-        var isGm = message.From?.Id == sessionsList.First().GmId;
+        var canManage = sessionsList.First().CanManage;
-        var keyboard = isGm 
+        var keyboard = canManage
             ? new Telegram.Bot.Types.ReplyMarkups.InlineKeyboardMarkup(
                 sessionsList.Select(s => new[] { Telegram.Bot.Types.ReplyMarkups.InlineKeyboardButton.WithCallbackData($"🗑 Удалить {s.ScheduledAt.FormatMoscowShort()}", $"delete_session:{s.Id}") }))
             : null;

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

@@ -25,7 +25,8 @@ internal sealed record VoteParticipantDto(
 
 /// <summary>
 /// Handles text input from the GM who has an AwaitingTime proposal.
-/// Parses the new time, creates a voting message, and tags all participants.
+/// Parses reschedule options with a voting deadline, creates a voting message,
+/// and tags all participants.
 /// If no participants are registered, reschedules immediately.
 /// </summary>
 public sealed class HandleRescheduleTimeInputHandler(
@@ -62,6 +63,13 @@ public sealed class HandleRescheduleTimeInputHandler(
             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
             """,
@@ -70,26 +78,17 @@ public sealed class HandleRescheduleTimeInputHandler(
         if (proposal is null)
             return false;
 
-        // 2. Parse the new time
+        // 2. Parse voting input
-        if (!MoscowTime.TryParseMoscow(text, out var newTime))
+        if (!RescheduleVotingInput.TryParse(text, DateTimeOffset.UtcNow, out var votingInput, out var parseError))
         {
             await bot.SendMessage(
                 chatId: chatId,
-                text: "⚠️ Не удалось распознать время. Используйте формат: <code>ДД.ММ.ГГГГ ЧЧ:ММ</code>\nНапример: <code>25.04.2026 19:30</code>",
+                text: $"⚠️ {parseError}\n\nИспользуйте формат:\n<code>25.04.2026 19:30\n26.04.2026 18:00\nДедлайн: 25.04.2026 12:00</code>",
                 parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
                 cancellationToken: ct);
             return true;
         }
 
-        if (newTime <= DateTimeOffset.UtcNow)
-        {
-            await bot.SendMessage(
-                chatId: chatId,
-                text: "⚠️ Новое время должно быть в будущем. Попробуйте снова.",
-                cancellationToken: ct);
-            return true;
-        }
-
         // 3. Load participants (non-GM) signed up for this session
         var participants = (await connection.QueryAsync<VoteParticipantDto>(
             """
@@ -108,35 +107,56 @@ public sealed class HandleRescheduleTimeInputHandler(
         // 4. If no participants — reschedule immediately
         if (participants.Count == 0)
         {
-            await RescheduleImmediately(connection, proposal, newTime, chatId, ct);
+            await RescheduleImmediately(connection, proposal, votingInput.Options[0], chatId, ct);
             await TryDeleteMessage(chatId, 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();
 
-        // Update proposal with proposed time and Voting status
         await connection.ExecuteAsync(
             """
             UPDATE reschedule_proposals
-            SET proposed_at = @ProposedAt, status = 'Voting', vote_chat_id = @ChatId
+            SET voting_deadline_at = @Deadline, status = 'Voting', vote_chat_id = @ChatId
             WHERE id = @Id
             """,
-            new { ProposedAt = newTime, ChatId = chatId, Id = proposal.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);
 
-        // Build voting message text
+        var voteText = BuildVotingMessage(
-        var voteText = BuildVotingMessage(proposal.Title, proposal.CurrentScheduledAt, newTime, participants, []);
+            proposal.Title,
-        
+            proposal.CurrentScheduledAt,
-        var keyboard = new InlineKeyboardMarkup([
+            votingInput.Deadline,
-            [
+            options,
-                InlineKeyboardButton.WithCallbackData("✅ Согласен", $"reschedule_vote:yes:{proposal.Id}"),
+            participants,
-                InlineKeyboardButton.WithCallbackData("❌ Против", $"reschedule_vote:no:{proposal.Id}")
+            []);
-            ]
+        var keyboard = BuildVotingKeyboard(options);
-        ]);
 
         var voteMsg = await bot.SendMessage(
             chatId: chatId,
@@ -148,12 +168,18 @@ public sealed class HandleRescheduleTimeInputHandler(
         var mode = SessionNotificationModeExtensions.FromDatabaseValue(proposal.NotificationMode);
         if (mode.ShouldSendDirectMessages())
         {
+            var optionsText = string.Join(
+                "\n",
+                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)
-                📅 Новое время: <b>{newTime.FormatMoscow()}</b> (МСК)
+                🗳 Варианты:
+                {optionsText}
+
+                ⏳ Дедлайн: <b>{votingInput.Deadline.FormatMoscow()}</b> (МСК)
 
                 Проголосуйте кнопкой в групповом сообщении.
                 """;
@@ -173,7 +199,12 @@ public sealed class HandleRescheduleTimeInputHandler(
             "UPDATE reschedule_proposals SET vote_message_id = @MsgId WHERE id = @Id",
             new { MsgId = voteMsg.MessageId, Id = proposal.Id });
 
-        logger.LogInformation("Reschedule voting started for session {SessionId}, proposal {ProposalId}", proposal.SessionId, proposal.Id);
+        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);
@@ -219,33 +250,105 @@ public sealed class HandleRescheduleTimeInputHandler(
     }
 
     internal static string BuildVotingMessage(
-        string title, DateTime currentTime, DateTimeOffset newTime,
+        string title,
+        DateTime currentTime,
+        DateTimeOffset deadline,
+        IReadOnlyList<RescheduleOptionDto> options,
         IReadOnlyList<VoteParticipantDto> participants,
-        IReadOnlyCollection<Guid> approvedPlayerIds)
+        IReadOnlyList<RescheduleOptionVoteDto> votes)
     {
+        var votesByOption = votes
+            .GroupBy(v => v.OptionId)
+            .ToDictionary(g => g.Key, g => g.ToList());
+        var votedPlayerIds = votes.Select(v => v.PlayerId).ToHashSet();
+        var pendingParticipants = participants
+            .Where(p => !votedPlayerIds.Contains(p.PlayerId))
+            .Select(FormatParticipantName)
+            .ToList();
+
         var lines = new List<string>
         {
             $"🔄 <b>Перенос сессии «{System.Net.WebUtility.HtmlEncode(title)}»</b>",
             "",
             $"📅 Текущее время: <b>{currentTime.FormatMoscow()}</b> (МСК)",
-            $"📅 Новое время: <b>{newTime.ToOffset(TimeSpan.FromHours(3)).ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"))}</b> (МСК)",
+            $"⏳ Дедлайн: <b>{deadline.FormatMoscow()}</b> (МСК)",
             "",
-            "Для переноса нужно согласие всех участников:"
+            "Выберите один из вариантов:"
         };
 
-        foreach (var p in participants)
+        foreach (var option in options.OrderBy(x => x.DisplayOrder))
         {
-            var name = p.TelegramUsername is not null ? $"@{p.TelegramUsername}" : p.DisplayName;
+            var optionVotes = votesByOption.GetValueOrDefault(option.OptionId, []);
-            var icon = approvedPlayerIds.Contains(p.PlayerId) ? "✅" : "⏳";
+            lines.Add(
-            lines.Add($"   {icon} {name}");
+                $"{option.DisplayOrder}. <b>{option.ProposedAt.FormatMoscow()}</b> (МСК) — {FormatVoteCount(optionVotes.Count)}");
+
+            if (optionVotes.Count > 0)
+            {
+                lines.Add($"   {string.Join(", ", optionVotes.Select(FormatParticipantName))}");
+            }
+        }
+
+        if (pendingParticipants.Count > 0)
+        {
+            lines.Add("");
+            lines.Add($"Не проголосовали: {string.Join(", ", pendingParticipants)}");
         }
 
         lines.Add("");
-        lines.Add($"Голоса: {approvedPlayerIds.Count}/{participants.Count} ✅");
+        lines.Add($"Голосов: {votedPlayerIds.Count}/{participants.Count}");
+        lines.Add("Правило: побеждает вариант с большинством голосов к дедлайну; при ничьей перенос не применяется.");
 
         return string.Join("\n", lines);
     }
 
+    internal static InlineKeyboardMarkup BuildVotingKeyboard(IReadOnlyList<RescheduleOptionDto> options)
+    {
+        return new InlineKeyboardMarkup(
+            options
+                .OrderBy(option => option.DisplayOrder)
+                .Select(option => new[]
+                {
+                    InlineKeyboardButton.WithCallbackData(
+                        $"{option.DisplayOrder}. {FormatButtonTime(option.ProposedAt)}",
+                        $"reschedule_vote:{option.OptionId}")
+                }));
+    }
+
+    internal static string FormatParticipantName(VoteParticipantDto participant)
+    {
+        return participant.TelegramUsername is { Length: > 0 } username
+            ? $"@{System.Net.WebUtility.HtmlEncode(username)}"
+            : System.Net.WebUtility.HtmlEncode(participant.DisplayName);
+    }
+
+    internal static string FormatParticipantName(RescheduleOptionVoteDto vote)
+    {
+        return vote.TelegramUsername is { Length: > 0 } username
+            ? $"@{System.Net.WebUtility.HtmlEncode(username)}"
+            : System.Net.WebUtility.HtmlEncode(vote.DisplayName);
+    }
+
+    private static string FormatVoteCount(int count)
+    {
+        var modulo100 = count % 100;
+        var modulo10 = count % 10;
+        var word = modulo100 is >= 11 and <= 14
+            ? "голосов"
+            : modulo10 switch
+            {
+                1 => "голос",
+                >= 2 and <= 4 => "голоса",
+                _ => "голосов"
+            };
+
+        return $"{count} {word}";
+    }
+
+    private static string FormatButtonTime(DateTimeOffset utc)
+        => utc.ToOffset(TimeSpan.FromHours(3)).ToString(
+            "dd.MM HH:mm",
+            System.Globalization.CultureInfo.InvariantCulture);
+
     private async Task TryUpdateBatchMessage(AwaitingProposalDto proposal, CancellationToken ct)
     {
         try

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

@@ -1,16 +1,12 @@
 using Dapper;
-using GmRelay.Bot.Features.Notifications;
 using GmRelay.Shared.Domain;
-using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
-using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
 public sealed record HandleRescheduleVoteCommand(
-    Guid ProposalId,
+    Guid OptionId,
-    string Vote,
     long TelegramUserId,
     string CallbackQueryId,
     long ChatId,
@@ -19,20 +15,13 @@ public sealed record HandleRescheduleVoteCommand(
 internal sealed record VoteProposalDto(
     Guid Id,
     Guid SessionId,
-    DateTime ProposedAt,
+    DateTimeOffset VotingDeadlineAt,
     string Title,
-    DateTime CurrentScheduledAt,
+    DateTime CurrentScheduledAt);
-    Guid BatchId,
-    string SessionStatus,
-    long TelegramChatId,
-    int? ConfirmationMessageId,
-    int? BatchMessageId,
-    string NotificationMode);
 
 public sealed class HandleRescheduleVoteHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
-    DirectSessionNotificationSender directSender,
     ILogger<HandleRescheduleVoteHandler> logger)
 {
     public async Task HandleAsync(HandleRescheduleVoteCommand command, CancellationToken ct)
@@ -44,21 +33,15 @@ public sealed class HandleRescheduleVoteHandler(
             """
             SELECT rp.id AS Id,
                    rp.session_id AS SessionId,
-                   rp.proposed_at AS ProposedAt,
+                   rp.voting_deadline_at AS VotingDeadlineAt,
                    s.title AS Title,
-                   s.scheduled_at AS CurrentScheduledAt,
+                   s.scheduled_at AS CurrentScheduledAt
-                   s.batch_id AS BatchId,
+            FROM reschedule_options ro
-                   s.status AS SessionStatus,
+            JOIN reschedule_proposals rp ON rp.id = ro.proposal_id
-                   s.confirmation_message_id AS ConfirmationMessageId,
-                   s.batch_message_id AS BatchMessageId,
-                   g.telegram_chat_id AS TelegramChatId,
-                   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 ro.id = @OptionId AND rp.status = 'Voting'
-            WHERE rp.id = @ProposalId AND rp.status = 'Voting'
             """,
-            new { command.ProposalId },
+            new { command.OptionId },
             transaction);
 
         if (proposal is null)
@@ -70,6 +53,16 @@ public sealed class HandleRescheduleVoteHandler(
             return;
         }
 
+        if (proposal.VotingDeadlineAt <= DateTimeOffset.UtcNow)
+        {
+            await bot.AnswerCallbackQuery(
+                command.CallbackQueryId,
+                "Дедлайн уже прошёл. Результаты скоро будут применены.",
+                showAlert: true,
+                cancellationToken: ct);
+            return;
+        }
+
         var playerId = await connection.ExecuteScalarAsync<Guid?>(
             """
             SELECT p.id
@@ -94,18 +87,21 @@ public sealed class HandleRescheduleVoteHandler(
 
         await connection.ExecuteAsync(
             """
-            INSERT INTO reschedule_votes (proposal_id, player_id, vote)
+            INSERT INTO reschedule_option_votes (proposal_id, player_id, option_id)
-            VALUES (@ProposalId, @PlayerId, @Vote)
+            VALUES (@ProposalId, @PlayerId, @OptionId)
             ON CONFLICT (proposal_id, player_id) DO UPDATE
-            SET vote = EXCLUDED.vote,
+            SET option_id = EXCLUDED.option_id,
                 voted_at = now()
             """,
-            new { command.ProposalId, PlayerId = playerId.Value, command.Vote },
+            new
+            {
+                ProposalId = proposal.Id,
+                PlayerId = playerId.Value,
+                command.OptionId
+            },
             transaction);
 
-        var participants = command.Vote.Equals("no", StringComparison.OrdinalIgnoreCase)
+        var participants = (await connection.QueryAsync<VoteParticipantDto>(
-            ? new List<VoteParticipantDto>()
-            : (await connection.QueryAsync<VoteParticipantDto>(
             """
             SELECT p.id AS PlayerId,
                    p.display_name AS DisplayName,
@@ -116,159 +112,47 @@ public sealed class HandleRescheduleVoteHandler(
             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 approvedPlayerIds = command.Vote.Equals("no", StringComparison.OrdinalIgnoreCase)
+        var options = (await connection.QueryAsync<RescheduleOptionDto>(
-            ? new HashSet<Guid>()
-            : (await connection.QueryAsync<Guid>(
             """
-                SELECT player_id
+            SELECT id AS OptionId,
-                FROM reschedule_votes
+                   display_order AS DisplayOrder,
-                WHERE proposal_id = @ProposalId AND vote = 'yes'
+                   proposed_at AS ProposedAt
+            FROM reschedule_options
+            WHERE proposal_id = @ProposalId
+            ORDER BY display_order
             """,
-                new { command.ProposalId },
+            new { ProposalId = proposal.Id },
-                transaction)).ToHashSet();
+            transaction)).ToList();
 
-        var decision = RescheduleVoteRules.Evaluate(command.Vote, participants.Count, approvedPlayerIds.Count);
+        var votes = (await connection.QueryAsync<RescheduleOptionVoteDto>(
-
-        if (decision.Outcome == RescheduleVoteOutcome.Rejected)
-        {
-            var directRecipients = await LoadDirectRecipients(connection, proposal.SessionId, transaction);
-
-            await connection.ExecuteAsync(
-                "UPDATE reschedule_proposals SET status = 'Rejected' WHERE id = @Id",
-                new { Id = command.ProposalId },
-                transaction);
-
-            await transaction.CommitAsync(ct);
-
-            var voterName = await connection.QuerySingleOrDefaultAsync<string>(
-                "SELECT display_name FROM players WHERE telegram_id = @TelegramUserId",
-                new { command.TelegramUserId });
-
-            try
-            {
-                await bot.EditMessageText(
-                    chatId: command.ChatId,
-                    messageId: command.MessageId,
-                    text: $"❌ <b>Перенос сессии «{System.Net.WebUtility.HtmlEncode(proposal.Title)}» отклонён!</b>\n\n{voterName ?? "Участник"} проголосовал(а) против. Время сессии остаётся прежним:\n📅 <b>{proposal.CurrentScheduledAt.FormatMoscow()}</b> (МСК)",
-                    parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                    cancellationToken: ct);
-            }
-            catch (Exception ex)
-            {
-                logger.LogWarning(ex, "Failed to update vote message after rejection");
-            }
-
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, decision.CallbackText, cancellationToken: ct);
-
-            var mode = SessionNotificationModeExtensions.FromDatabaseValue(proposal.NotificationMode);
-            if (mode.ShouldSendDirectMessages())
-            {
-                await directSender.SendAsync(
-                    directRecipients,
-                    $"❌ <b>Перенос сессии отклонён</b>\n\n📌 <b>{System.Net.WebUtility.HtmlEncode(proposal.Title)}</b>\n📅 Время остаётся прежним: <b>{proposal.CurrentScheduledAt.FormatMoscow()}</b> (МСК)",
-                    "reschedule-rejected",
-                    proposal.SessionId,
-                    ct);
-            }
-
-            logger.LogInformation("Reschedule proposal {ProposalId} rejected by player {PlayerId}", command.ProposalId, playerId);
-            return;
-        }
-
-        if (decision.ShouldRescheduleSession)
-        {
-            var directRecipients = await LoadDirectRecipients(connection, proposal.SessionId, transaction);
-            var newTime = new DateTimeOffset(proposal.ProposedAt, TimeSpan.Zero);
-
-            await connection.ExecuteAsync(
             """
-                UPDATE sessions
+            SELECT rov.option_id AS OptionId,
-                SET scheduled_at = @NewTime,
+                   p.id AS PlayerId,
-                    status = @Status,
+                   p.display_name AS DisplayName,
-                    confirmation_message_id = NULL,
+                   p.telegram_username AS TelegramUsername
-                    link_message_id = NULL,
+            FROM reschedule_option_votes rov
-                    one_hour_reminder_processed_at = NULL,
+            JOIN players p ON p.id = rov.player_id
-                    updated_at = now()
+            WHERE rov.proposal_id = @ProposalId
-                WHERE id = @SessionId
+            ORDER BY rov.voted_at, p.display_name
             """,
-                new { NewTime = newTime, proposal.SessionId, Status = SessionStatus.Planned },
+            new { ProposalId = proposal.Id },
-                transaction);
+            transaction)).ToList();
 
-            await connection.ExecuteAsync(
-                "UPDATE reschedule_proposals SET status = 'Approved' WHERE id = @Id",
-                new { Id = command.ProposalId },
-                transaction);
-
-            if (decision.ShouldResetParticipantRsvps)
-            {
-                await connection.ExecuteAsync(
-                    """
-                    UPDATE session_participants
-                    SET rsvp_status = 'Pending',
-                        responded_at = NULL
-                    WHERE session_id = @SessionId AND is_gm = false
-                      AND registration_status = @Active
-                    """,
-                    new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
-                    transaction);
-            }
-
-            await transaction.CommitAsync(ct);
-
-            try
-            {
-                await bot.EditMessageText(
-                    chatId: command.ChatId,
-                    messageId: command.MessageId,
-                    text: $"✅ <b>Перенос сессии «{System.Net.WebUtility.HtmlEncode(proposal.Title)}» одобрен!</b>\n\nВсе участники согласились.\n📅 Новое время: <b>{proposal.ProposedAt.FormatMoscow()}</b> (МСК)\n\n<i>Уведомления будут приходить согласно новому расписанию.</i>",
-                    parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                    cancellationToken: ct);
-            }
-            catch (Exception ex)
-            {
-                logger.LogWarning(ex, "Failed to update vote message after approval");
-            }
-
-            await TryUpdateBatchMessage(proposal, ct);
-
-            var mode = SessionNotificationModeExtensions.FromDatabaseValue(proposal.NotificationMode);
-            if (mode.ShouldSendDirectMessages())
-            {
-                await directSender.SendAsync(
-                    directRecipients,
-                    $"✅ <b>Сессия перенесена</b>\n\n📌 <b>{System.Net.WebUtility.HtmlEncode(proposal.Title)}</b>\n📅 Новое время: <b>{proposal.ProposedAt.FormatMoscow()}</b> (МСК)",
-                    "reschedule-approved",
-                    proposal.SessionId,
-                    ct);
-            }
-
-            logger.LogInformation(
-                "Session {SessionId} rescheduled to {NewTime} (proposal {ProposalId})",
-                proposal.SessionId,
-                newTime,
-                command.ProposalId);
-        }
-        else
-        {
         await transaction.CommitAsync(ct);
 
         var voteText = HandleRescheduleTimeInputHandler.BuildVotingMessage(
             proposal.Title,
             proposal.CurrentScheduledAt,
-                new DateTimeOffset(proposal.ProposedAt, TimeSpan.Zero),
+            proposal.VotingDeadlineAt,
+            options,
             participants,
-                approvedPlayerIds);
+            votes);
-
+        var keyboard = HandleRescheduleTimeInputHandler.BuildVotingKeyboard(options);
-            var keyboard = new InlineKeyboardMarkup([
-                [
-                    InlineKeyboardButton.WithCallbackData("✅ Согласен", $"reschedule_vote:yes:{command.ProposalId}"),
-                    InlineKeyboardButton.WithCallbackData("❌ Против", $"reschedule_vote:no:{command.ProposalId}")
-                ]
-            ]);
 
         try
         {
@@ -282,80 +166,12 @@ public sealed class HandleRescheduleVoteHandler(
         }
         catch (Exception ex)
         {
-                logger.LogWarning(ex, "Failed to update vote message with progress");
+            logger.LogWarning(ex, "Failed to update reschedule vote message for proposal {ProposalId}", proposal.Id);
-            }
         }
 
-        await bot.AnswerCallbackQuery(command.CallbackQueryId, decision.CallbackText, cancellationToken: ct);
+        await bot.AnswerCallbackQuery(
-    }
+            command.CallbackQueryId,
-
+            "Ваш голос учтён. До дедлайна его можно изменить.",
-    private static async Task<List<DirectNotificationRecipient>> LoadDirectRecipients(
-        Npgsql.NpgsqlConnection connection,
-        Guid sessionId,
-        Npgsql.NpgsqlTransaction transaction)
-    {
-        return (await connection.QueryAsync<DirectNotificationRecipient>(
-            """
-            SELECT p.telegram_id AS TelegramId,
-                   p.display_name AS DisplayName
-            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 { SessionId = sessionId, Active = ParticipantRegistrationStatus.Active },
-            transaction)).ToList();
-    }
-
-    private async Task TryUpdateBatchMessage(VoteProposalDto proposal, CancellationToken ct)
-    {
-        try
-        {
-            await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-            var batchSessions = (await connection.QueryAsync<SessionBatchDto>(
-                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers 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.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 renderResult = SessionBatchRenderer.Render(proposal.Title, batchSessions, batchParticipants);
-
-                await bot.EditMessageText(
-                    chatId: proposal.TelegramChatId,
-                    messageId: proposal.BatchMessageId.Value,
-                    text: renderResult.Text,
-                    parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                    replyMarkup: renderResult.Markup,
             cancellationToken: ct);
     }
-            else
-            {
-                await bot.SendMessage(
-                    chatId: proposal.TelegramChatId,
-                    text: $"📣 Расписание обновлено! Сессия «{proposal.Title}» перенесена на <b>{proposal.ProposedAt.FormatMoscow()}</b> (МСК).",
-                    parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                    cancellationToken: ct);
-            }
-        }
-        catch (Exception ex)
-        {
-            logger.LogWarning(ex, "Failed to update batch message for proposal {ProposalId}", proposal.Id);
-        }
-    }
 }

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

@@ -16,14 +16,14 @@ public sealed record InitiateRescheduleCommand(
 
 // ── DTOs ─────────────────────────────────────────────────────────────
 
-internal sealed record RescheduleSessionInfoDto(string Title, long GmId);
+internal sealed record RescheduleSessionInfoDto(string Title, bool CanManage);
 
 // ── Handler ──────────────────────────────────────────────────────────
 
 /// <summary>
 /// Handles the "⏰ Перенести" button press from the batch message.
 /// Creates a reschedule proposal in AwaitingTime status and prompts
-/// the GM to enter the new time via a regular text message.
+/// the GM to enter 2-3 new time options and a voting deadline.
 /// </summary>
 public sealed class InitiateRescheduleHandler(
     NpgsqlDataSource dataSource,
@@ -34,15 +34,21 @@ public sealed class InitiateRescheduleHandler(
     {
         await using var connection = await dataSource.OpenConnectionAsync(ct);
 
-        // 1. Verify GM ownership
+        // 1. Verify group management access.
         var session = await connection.QuerySingleOrDefaultAsync<RescheduleSessionInfoDto>(
             """
-            SELECT s.title AS Title, g.gm_telegram_id AS GmId
+            SELECT s.title AS Title,
+                   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
-            JOIN game_groups g ON s.group_id = g.id
             WHERE s.id = @SessionId AND s.status != @Cancelled
             """,
-            new { command.SessionId, Cancelled = SessionStatus.Cancelled });
+            new { command.SessionId, command.TelegramUserId, Cancelled = SessionStatus.Cancelled });
 
         if (session is null)
         {
@@ -50,10 +56,10 @@ public sealed class InitiateRescheduleHandler(
             return;
         }
 
-        if (session.GmId != command.TelegramUserId)
+        if (!session.CanManage)
         {
             await bot.AnswerCallbackQuery(command.CallbackQueryId,
-                "Только Мастер Игры (GM) может переносить сессию.", showAlert: true, cancellationToken: ct);
+                "Только owner или co-GM может переносить сессию.", showAlert: true, cancellationToken: ct);
             return;
         }
 
@@ -86,11 +92,20 @@ public sealed class InitiateRescheduleHandler(
 
         // 4. Prompt GM in chat
         await bot.AnswerCallbackQuery(command.CallbackQueryId,
-            "Введите новое время в чат (формат: ДД.ММ.ГГГГ ЧЧ:ММ)", cancellationToken: ct);
+            "Введите 2-3 варианта времени и дедлайн голосования.", cancellationToken: ct);
 
         await bot.SendMessage(
             chatId: command.ChatId,
-            text: $"⏰ Укажите новое время для сессии «{session.Title}» в формате:\n<code>ДД.ММ.ГГГГ ЧЧ:ММ</code>\n\nНапример: <code>25.04.2026 19:30</code>",
+            text: $"""
+                ⏰ Укажите 2-3 варианта времени для сессии «{session.Title}» и дедлайн голосования.
+
+                Формат:
+                <code>25.04.2026 19:30
+                26.04.2026 18:00
+                Дедлайн: 25.04.2026 12:00</code>
+
+                Дедлайн должен быть в будущем и раньше первого предложенного времени.
+                """,
             parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
             cancellationToken: ct);
     }

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

@@ -9,27 +9,57 @@ internal enum RescheduleVoteOutcome
 
 internal sealed record RescheduleVoteDecision(
     RescheduleVoteOutcome Outcome,
-    string CallbackText,
+    string Reason,
-    bool ShouldRescheduleSession,
+    Guid? SelectedOptionId = null,
-    bool ShouldResetParticipantRsvps);
+    string CallbackText = "",
+    bool ShouldRescheduleSession = false,
+    bool ShouldResetParticipantRsvps = false);
 
 internal static class RescheduleVoteRules
 {
+    public static RescheduleVoteDecision SelectWinner(IReadOnlyList<RescheduleOptionVoteCount> voteCounts)
+    {
+        var maxVotes = voteCounts.Count == 0 ? 0 : voteCounts.Max(x => x.VoteCount);
+        if (maxVotes == 0)
+        {
+            return new RescheduleVoteDecision(
+                RescheduleVoteOutcome.Rejected,
+                "Никто не проголосовал до дедлайна, перенос не применяется.");
+        }
+
+        var winners = voteCounts.Where(x => x.VoteCount == maxVotes).ToList();
+        if (winners.Count > 1)
+        {
+            return new RescheduleVoteDecision(
+                RescheduleVoteOutcome.Rejected,
+                "Голоса разделились поровну, перенос не применяется.");
+        }
+
+        return new RescheduleVoteDecision(
+            RescheduleVoteOutcome.Approved,
+            "Победил вариант с большинством голосов.",
+            winners[0].OptionId,
+            ShouldRescheduleSession: true,
+            ShouldResetParticipantRsvps: true);
+    }
+
     public static RescheduleVoteDecision Evaluate(string vote, int totalParticipants, int approvedParticipants)
     {
         if (string.Equals(vote, "no", StringComparison.OrdinalIgnoreCase))
         {
             return new RescheduleVoteDecision(
                 Outcome: RescheduleVoteOutcome.Rejected,
-                CallbackText: "\u0412\u044b \u043f\u0440\u043e\u0433\u043e\u043b\u043e\u0441\u043e\u0432\u0430\u043b\u0438 \u043f\u0440\u043e\u0442\u0438\u0432 \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0430.",
+                Reason: "\u041e\u0434\u0438\u043d \u0438\u0437 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u043e\u0432 \u043e\u0442\u043a\u043b\u043e\u043d\u0438\u043b \u043f\u0435\u0440\u0435\u043d\u043e\u0441.",
-                ShouldRescheduleSession: false,
+                CallbackText: "\u0412\u044b \u043f\u0440\u043e\u0433\u043e\u043b\u043e\u0441\u043e\u0432\u0430\u043b\u0438 \u043f\u0440\u043e\u0442\u0438\u0432 \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0430.");
-                ShouldResetParticipantRsvps: false);
         }
 
         var everyoneApproved = approvedParticipants == totalParticipants;
 
         return new RescheduleVoteDecision(
             Outcome: everyoneApproved ? RescheduleVoteOutcome.Approved : RescheduleVoteOutcome.Pending,
+            Reason: everyoneApproved
+                ? "\u0412\u0441\u0435 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0438 \u0441\u043e\u0433\u043b\u0430\u0441\u043d\u044b."
+                : "\u0413\u043e\u043b\u043e\u0441\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442\u0441\u044f.",
             CallbackText: everyoneApproved
                 ? "\u0412\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441! \u0412\u0441\u0435 \u0441\u043e\u0433\u043b\u0430\u0441\u043d\u044b \u2014 \u0432\u0440\u0435\u043c\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u043e."
                 : "\u0412\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441!",

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

@@ -0,0 +1,361 @@
+using Dapper;
+using GmRelay.Bot.Features.Notifications;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+using Telegram.Bot;
+using Telegram.Bot.Types.Enums;
+
+namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
+
+internal sealed record DueRescheduleProposalDto(
+    Guid Id,
+    Guid SessionId,
+    DateTimeOffset VotingDeadlineAt,
+    string Title,
+    DateTime CurrentScheduledAt,
+    Guid BatchId,
+    int? BatchMessageId,
+    int? VoteMessageId,
+    long TelegramChatId,
+    string NotificationMode);
+
+public sealed class RescheduleVotingDeadlineService(
+    NpgsqlDataSource dataSource,
+    ITelegramBotClient bot,
+    DirectSessionNotificationSender directSender,
+    ILogger<RescheduleVotingDeadlineService> logger) : BackgroundService
+{
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        try
+        {
+            await ProcessDueProposals(stoppingToken);
+
+            using var timer = new PeriodicTimer(TimeSpan.FromMinutes(1));
+            while (await timer.WaitForNextTickAsync(stoppingToken))
+            {
+                await ProcessDueProposals(stoppingToken);
+            }
+        }
+        catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+        {
+        }
+    }
+
+    private async Task ProcessDueProposals(CancellationToken ct)
+    {
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+            var proposalIds = (await connection.QueryAsync<Guid>(
+                """
+                SELECT id
+                FROM reschedule_proposals
+                WHERE status = 'Voting'
+                  AND voting_deadline_at IS NOT NULL
+                  AND voting_deadline_at <= now()
+                ORDER BY voting_deadline_at
+                LIMIT 25
+                """)).ToList();
+
+            foreach (var proposalId in proposalIds)
+            {
+                await FinalizeProposal(proposalId, ct);
+            }
+        }
+        catch (OperationCanceledException) when (ct.IsCancellationRequested)
+        {
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to process due reschedule voting proposals");
+        }
+    }
+
+    private async Task FinalizeProposal(Guid proposalId, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        var proposal = await connection.QuerySingleOrDefaultAsync<DueRescheduleProposalDto>(
+            """
+            SELECT rp.id AS Id,
+                   rp.session_id AS SessionId,
+                   rp.voting_deadline_at AS VotingDeadlineAt,
+                   rp.vote_message_id AS VoteMessageId,
+                   s.title AS Title,
+                   s.scheduled_at AS CurrentScheduledAt,
+                   s.batch_id AS BatchId,
+                   s.batch_message_id AS BatchMessageId,
+                   s.notification_mode AS NotificationMode,
+                   g.telegram_chat_id AS TelegramChatId
+            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.id = @ProposalId
+              AND rp.status = 'Voting'
+              AND rp.voting_deadline_at IS NOT NULL
+              AND rp.voting_deadline_at <= now()
+            FOR UPDATE
+            """,
+            new { ProposalId = proposalId },
+            transaction);
+
+        if (proposal is null)
+            return;
+
+        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();
+
+        var voteCounts = options
+            .Select(option => new RescheduleOptionVoteCount(
+                option.OptionId,
+                votes.Count(vote => vote.OptionId == option.OptionId)))
+            .ToList();
+        var decision = RescheduleVoteRules.SelectWinner(voteCounts);
+        var selectedOption = decision.SelectedOptionId is { } selectedOptionId
+            ? options.Single(x => x.OptionId == selectedOptionId)
+            : null;
+
+        if (selectedOption is not null)
+        {
+            await connection.ExecuteAsync(
+                """
+                UPDATE sessions
+                SET scheduled_at = @NewTime,
+                    status = @Status,
+                    confirmation_message_id = NULL,
+                    link_message_id = NULL,
+                    one_hour_reminder_processed_at = NULL,
+                    updated_at = now()
+                WHERE id = @SessionId
+                """,
+                new { NewTime = selectedOption.ProposedAt, proposal.SessionId, Status = SessionStatus.Planned },
+                transaction);
+
+            await connection.ExecuteAsync(
+                """
+                UPDATE session_participants
+                SET rsvp_status = 'Pending',
+                    responded_at = NULL
+                WHERE session_id = @SessionId
+                  AND is_gm = false
+                  AND registration_status = @Active
+                """,
+                new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
+                transaction);
+
+            await connection.ExecuteAsync(
+                """
+                UPDATE reschedule_proposals
+                SET status = 'Approved',
+                    selected_option_id = @SelectedOptionId,
+                    proposed_at = @ProposedAt
+                WHERE id = @ProposalId
+                """,
+                new
+                {
+                    ProposalId = proposal.Id,
+                    SelectedOptionId = selectedOption.OptionId,
+                    ProposedAt = selectedOption.ProposedAt
+                },
+                transaction);
+        }
+        else
+        {
+            await connection.ExecuteAsync(
+                "UPDATE reschedule_proposals SET status = 'Rejected' WHERE id = @ProposalId",
+                new { ProposalId = proposal.Id },
+                transaction);
+        }
+
+        var directRecipients = participants
+            .Select(p => new DirectNotificationRecipient(p.TelegramId, p.DisplayName))
+            .ToList();
+
+        await transaction.CommitAsync(ct);
+
+        await TryUpdateVoteMessage(proposal, options, participants, votes, decision, selectedOption, ct);
+
+        if (selectedOption is not null)
+        {
+            await TryUpdateBatchMessage(proposal, ct);
+        }
+
+        var mode = SessionNotificationModeExtensions.FromDatabaseValue(proposal.NotificationMode);
+        if (mode.ShouldSendDirectMessages())
+        {
+            await SendDirectResult(proposal, directRecipients, decision, selectedOption, ct);
+        }
+
+        logger.LogInformation(
+            "Finalized reschedule proposal {ProposalId} for session {SessionId} with outcome {Outcome}",
+            proposal.Id,
+            proposal.SessionId,
+            decision.Outcome);
+    }
+
+    private async Task TryUpdateVoteMessage(
+        DueRescheduleProposalDto proposal,
+        IReadOnlyList<RescheduleOptionDto> options,
+        IReadOnlyList<VoteParticipantDto> participants,
+        IReadOnlyList<RescheduleOptionVoteDto> votes,
+        RescheduleVoteDecision decision,
+        RescheduleOptionDto? selectedOption,
+        CancellationToken ct)
+    {
+        if (proposal.VoteMessageId is null)
+            return;
+
+        try
+        {
+            var resultText = selectedOption is not null
+                ? $"✅ <b>Голосование завершено.</b>\nПобедил вариант {selectedOption.DisplayOrder}: <b>{selectedOption.ProposedAt.FormatMoscow()}</b> (МСК)."
+                : $"❌ <b>Голосование завершено.</b>\n{System.Net.WebUtility.HtmlEncode(decision.Reason)}";
+
+            var text = $"""
+                {HandleRescheduleTimeInputHandler.BuildVotingMessage(
+                    proposal.Title,
+                    proposal.CurrentScheduledAt,
+                    proposal.VotingDeadlineAt,
+                    options,
+                    participants,
+                    votes)}
+
+                {resultText}
+                """;
+
+            await bot.EditMessageText(
+                chatId: proposal.TelegramChatId,
+                messageId: proposal.VoteMessageId.Value,
+                text: text,
+                parseMode: ParseMode.Html,
+                cancellationToken: ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update finalized reschedule vote message for proposal {ProposalId}", proposal.Id);
+        }
+    }
+
+    private async Task TryUpdateBatchMessage(DueRescheduleProposalDto proposal, CancellationToken ct)
+    {
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+            var batchSessions = (await connection.QueryAsync<SessionBatchDto>(
+                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers 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.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 renderResult = SessionBatchRenderer.Render(proposal.Title, batchSessions, batchParticipants);
+
+                await bot.EditMessageText(
+                    chatId: proposal.TelegramChatId,
+                    messageId: proposal.BatchMessageId.Value,
+                    text: renderResult.Text,
+                    parseMode: ParseMode.Html,
+                    replyMarkup: renderResult.Markup,
+                    cancellationToken: ct);
+            }
+            else
+            {
+                await bot.SendMessage(
+                    chatId: proposal.TelegramChatId,
+                    text: $"📣 Расписание обновлено после голосования за перенос сессии «{System.Net.WebUtility.HtmlEncode(proposal.Title)}».",
+                    parseMode: ParseMode.Html,
+                    cancellationToken: ct);
+            }
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update batch message for finalized proposal {ProposalId}", proposal.Id);
+        }
+    }
+
+    private async Task SendDirectResult(
+        DueRescheduleProposalDto proposal,
+        IReadOnlyList<DirectNotificationRecipient> recipients,
+        RescheduleVoteDecision decision,
+        RescheduleOptionDto? selectedOption,
+        CancellationToken ct)
+    {
+        var htmlText = selectedOption is not null
+            ? $"""
+                ✅ <b>Сессия перенесена по итогам голосования</b>
+
+                📌 <b>{System.Net.WebUtility.HtmlEncode(proposal.Title)}</b>
+                📅 Новое время: <b>{selectedOption.ProposedAt.FormatMoscow()}</b> (МСК)
+                """
+            : $"""
+                ❌ <b>Перенос сессии отклонён по итогам голосования</b>
+
+                📌 <b>{System.Net.WebUtility.HtmlEncode(proposal.Title)}</b>
+                📅 Время остаётся прежним: <b>{proposal.CurrentScheduledAt.FormatMoscow()}</b> (МСК)
+                Причина: {System.Net.WebUtility.HtmlEncode(decision.Reason)}
+                """;
+
+        await directSender.SendAsync(
+            recipients,
+            htmlText,
+            selectedOption is not null ? "reschedule-vote-approved" : "reschedule-vote-rejected",
+            proposal.SessionId,
+            ct);
+    }
+}

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

@@ -0,0 +1,110 @@
+using System.Text.RegularExpressions;
+using GmRelay.Shared.Domain;
+
+namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
+
+internal sealed record RescheduleVotingInput(
+    IReadOnlyList<DateTimeOffset> Options,
+    DateTimeOffset Deadline)
+{
+    private static readonly Regex DateTimePattern = new(
+        @"(?<date>\d{1,2}\.\d{2}\.\d{4})\s+(?<time>\d{1,2}:\d{2})",
+        RegexOptions.CultureInvariant);
+
+    public static bool TryParse(
+        string text,
+        DateTimeOffset nowUtc,
+        out RescheduleVotingInput input,
+        out string error)
+    {
+        input = new RescheduleVotingInput([], default);
+        error = string.Empty;
+
+        var options = new List<DateTimeOffset>();
+        DateTimeOffset? deadline = null;
+
+        foreach (var rawLine in text.Split('\n', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries))
+        {
+            var line = rawLine.Trim();
+            var match = DateTimePattern.Match(line);
+            if (!match.Success)
+                continue;
+
+            var value = $"{match.Groups["date"].Value} {match.Groups["time"].Value}";
+            if (!MoscowTime.TryParseMoscow(value, out var parsed))
+                continue;
+
+            if (IsDeadlineLine(line))
+            {
+                deadline = parsed;
+            }
+            else
+            {
+                options.Add(parsed);
+            }
+        }
+
+        if (options.Count is < 2 or > 3)
+        {
+            error = "Укажите от 2 до 3 вариантов времени.";
+            return false;
+        }
+
+        if (options.Distinct().Count() != options.Count)
+        {
+            error = "Варианты времени не должны повторяться.";
+            return false;
+        }
+
+        if (deadline is null)
+        {
+            error = "Укажите дедлайн голосования строкой «Дедлайн: ДД.ММ.ГГГГ ЧЧ:ММ».";
+            return false;
+        }
+
+        if (options.Any(option => option <= nowUtc))
+        {
+            error = "Все варианты времени должны быть в будущем.";
+            return false;
+        }
+
+        if (deadline.Value <= nowUtc)
+        {
+            error = "Дедлайн голосования должен быть в будущем.";
+            return false;
+        }
+
+        if (deadline.Value >= options.Min())
+        {
+            error = "Дедлайн голосования должен быть раньше первого предложенного времени.";
+            return false;
+        }
+
+        input = new RescheduleVotingInput(options, deadline.Value);
+        return true;
+    }
+
+    private static bool IsDeadlineLine(string line)
+    {
+        var normalized = line.TrimStart('-', '*', ' ', '\t').ToLowerInvariant();
+
+        return normalized.StartsWith("дедлайн", StringComparison.Ordinal)
+            || normalized.StartsWith("deadline", StringComparison.Ordinal)
+            || normalized.StartsWith("до:", StringComparison.Ordinal);
+    }
+}
+
+internal sealed record RescheduleOptionDto(
+    Guid OptionId,
+    int DisplayOrder,
+    DateTimeOffset ProposedAt);
+
+internal sealed record RescheduleOptionVoteDto(
+    Guid OptionId,
+    Guid PlayerId,
+    string DisplayName,
+    string? TelegramUsername);
+
+internal sealed record RescheduleOptionVoteCount(
+    Guid OptionId,
+    int VoteCount);

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

@@ -0,0 +1,46 @@
+using Telegram.Bot;
+using Telegram.Bot.Types;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+public sealed class TelegramMiniAppMenuButtonService(
+    ITelegramBotClient bot,
+    IConfiguration configuration,
+    ILogger<TelegramMiniAppMenuButtonService> logger) : IHostedService
+{
+    public async Task StartAsync(CancellationToken cancellationToken)
+    {
+        var miniAppUrl = configuration["Telegram:MiniAppUrl"];
+        if (string.IsNullOrWhiteSpace(miniAppUrl))
+        {
+            logger.LogInformation("Telegram Mini App URL is not configured; menu button setup skipped.");
+            return;
+        }
+
+        if (!Uri.TryCreate(miniAppUrl, UriKind.Absolute, out var uri) ||
+            (uri.Scheme != Uri.UriSchemeHttps && !uri.IsLoopback))
+        {
+            logger.LogWarning("Telegram Mini App URL {MiniAppUrl} is not a valid HTTPS URL.", miniAppUrl);
+            return;
+        }
+
+        try
+        {
+            await bot.SetChatMenuButton(
+                menuButton: new MenuButtonWebApp
+                {
+                    Text = "Dashboard",
+                    WebApp = new WebAppInfo(miniAppUrl)
+                },
+                cancellationToken: cancellationToken);
+
+            logger.LogInformation("Telegram Mini App menu button configured for {MiniAppUrl}.", miniAppUrl);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to configure Telegram Mini App menu button.");
+        }
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
+}

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

@@ -9,6 +9,7 @@ using GmRelay.Bot.Features.Sessions.RescheduleSession;
 using Telegram.Bot;
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
+using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Infrastructure.Telegram;
 
@@ -30,6 +31,7 @@ public sealed class UpdateRouter(
     HandleRescheduleTimeInputHandler rescheduleTimeInputHandler,
     HandleRescheduleVoteHandler rescheduleVoteHandler,
     ITelegramBotClient bot,
+    IConfiguration configuration,
     ILogger<UpdateRouter> logger) : ITelegramUpdateHandler
 {
     public async Task RouteAsync(Update update, CancellationToken ct)
@@ -139,15 +141,10 @@ public sealed class UpdateRouter(
             return;
         }
 
-        if (action == "reschedule_vote" && parts.Length >= 3 && Guid.TryParse(parts[2], out var proposalId))
+        if (action == "reschedule_vote" && parts.Length >= 2 && Guid.TryParse(parts[1], out var optionId))
         {
-            var vote = parts[1]; // "yes" or "no"
-            if (vote is not ("yes" or "no"))
-                return;
-
             var command = new HandleRescheduleVoteCommand(
-                ProposalId: proposalId,
+                OptionId: optionId,
-                Vote: vote,
                 TelegramUserId: query.From.Id,
                 CallbackQueryId: query.Id,
                 ChatId: message.Chat.Id,
@@ -193,10 +190,7 @@ public sealed class UpdateRouter(
         switch (command)
         {
             case "/start":
-                await bot.SendMessage(
+                await SendStartMessageAsync(message, ct);
-                    chatId: message.Chat.Id,
-                    text: "GM-Relay Bot ready. Use /help for commands.",
-                    cancellationToken: ct);
                 break;
 
             case "/newsession":
@@ -223,8 +217,13 @@ public sealed class UpdateRouter(
                         Мест: 4
                         Ссылка: https://link
 
+                        Для регулярного расписания можно указать одну дату:
+                        Игр: 4
+                        Интервал: 7
+
                         /listsessions — список предстоящих сессий
                         Игроки могут записаться кнопкой «На дату» и сняться кнопкой «Выйти».
+                        Owner и co-GM могут переносить сессии кнопкой «Перенести»: бот попросит 2-3 варианта времени и дедлайн голосования.
                         /help — эта справка
                         """,
                     cancellationToken: ct);
@@ -236,4 +235,24 @@ public sealed class UpdateRouter(
                 break;
         }
     }
+
+    private async Task SendStartMessageAsync(Message message, CancellationToken ct)
+    {
+        var miniAppUrl = configuration["Telegram:MiniAppUrl"];
+        if (string.IsNullOrWhiteSpace(miniAppUrl))
+        {
+            await bot.SendMessage(
+                chatId: message.Chat.Id,
+                text: "GM-Relay Bot ready. Use /help for commands.",
+                cancellationToken: ct);
+            return;
+        }
+
+        await bot.SendMessage(
+            chatId: message.Chat.Id,
+            text: "GM-Relay Bot ready. Откройте dashboard внутри Telegram или используйте /help для команд.",
+            replyMarkup: new InlineKeyboardMarkup(
+                InlineKeyboardButton.WithWebApp("Открыть dashboard", new WebAppInfo(miniAppUrl))),
+            cancellationToken: ct);
+    }
 }

src/GmRelay.Bot/Migrations/V008__add_group_managers.sql

@@ -0,0 +1,26 @@
+-- Add explicit owner/co-GM management roles for each Telegram group.
+
+INSERT INTO players (telegram_id, display_name)
+SELECT DISTINCT gg.gm_telegram_id,
+       'GM ' || gg.gm_telegram_id::text
+FROM game_groups gg
+ON CONFLICT (telegram_id) DO NOTHING;
+
+CREATE TABLE group_managers (
+    id                  UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    group_id            UUID NOT NULL REFERENCES game_groups(id) ON DELETE CASCADE,
+    player_id           UUID NOT NULL REFERENCES players(id) ON DELETE CASCADE,
+    role                VARCHAR(50) NOT NULL CHECK (role IN ('Owner', 'CoGm')),
+    added_by_player_id  UUID REFERENCES players(id) ON DELETE SET NULL,
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    UNIQUE (group_id, player_id)
+);
+
+INSERT INTO group_managers (group_id, player_id, role)
+SELECT gg.id, p.id, 'Owner'
+FROM game_groups gg
+JOIN players p ON p.telegram_id = gg.gm_telegram_id
+ON CONFLICT (group_id, player_id) DO NOTHING;
+
+CREATE INDEX ix_group_managers_group_role ON group_managers (group_id, role);
+CREATE INDEX ix_group_managers_player ON group_managers (player_id);

src/GmRelay.Bot/Migrations/V009__add_multi_option_reschedule_votes.sql

@@ -0,0 +1,35 @@
+-- Multi-option reschedule voting with a deadline.
+
+ALTER TABLE reschedule_proposals
+    ADD COLUMN voting_deadline_at TIMESTAMPTZ,
+    ADD COLUMN selected_option_id UUID;
+
+CREATE TABLE reschedule_options (
+    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    proposal_id     UUID NOT NULL REFERENCES reschedule_proposals(id) ON DELETE CASCADE,
+    proposed_at     TIMESTAMPTZ NOT NULL,
+    display_order   INTEGER NOT NULL CHECK (display_order BETWEEN 1 AND 3),
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
+    UNIQUE (proposal_id, id),
+    UNIQUE (proposal_id, display_order),
+    UNIQUE (proposal_id, proposed_at)
+);
+
+CREATE TABLE reschedule_option_votes (
+    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    proposal_id     UUID NOT NULL REFERENCES reschedule_proposals(id) ON DELETE CASCADE,
+    player_id       UUID NOT NULL REFERENCES players(id) ON DELETE CASCADE,
+    option_id       UUID NOT NULL,
+    voted_at        TIMESTAMPTZ NOT NULL DEFAULT now(),
+    UNIQUE (proposal_id, player_id),
+    FOREIGN KEY (proposal_id, option_id)
+        REFERENCES reschedule_options(proposal_id, id)
+        ON DELETE CASCADE
+);
+
+CREATE INDEX ix_reschedule_voting_deadline
+    ON reschedule_proposals (voting_deadline_at)
+    WHERE status = 'Voting';
+
+CREATE INDEX ix_reschedule_option_votes_option
+    ON reschedule_option_votes (option_id);

src/GmRelay.Bot/Migrations/V010__add_campaign_templates.sql

@@ -0,0 +1,17 @@
+CREATE TABLE campaign_templates (
+    id                  UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    group_id            UUID NOT NULL REFERENCES game_groups(id) ON DELETE CASCADE,
+    name                VARCHAR(200) NOT NULL,
+    title               VARCHAR(500) NOT NULL,
+    join_link           TEXT NOT NULL,
+    session_count       INTEGER NOT NULL CHECK (session_count BETWEEN 1 AND 52),
+    interval_days       INTEGER NOT NULL CHECK (interval_days BETWEEN 1 AND 365),
+    max_players         INTEGER CHECK (max_players IS NULL OR max_players > 0),
+    notification_mode   VARCHAR(32) NOT NULL DEFAULT 'GroupAndDirect'
+                        CHECK (notification_mode IN ('GroupAndDirect', 'GroupOnly')),
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    UNIQUE (group_id, name)
+);
+
+CREATE INDEX ix_campaign_templates_group ON campaign_templates (group_id, created_at DESC);

src/GmRelay.Bot/Program.cs

@@ -71,10 +71,12 @@ builder.Services.AddSingleton<HandleRescheduleVoteHandler>();
 // ── Telegram infrastructure ──────────────────────────────────────────
 builder.Services.AddSingleton<UpdateRouter>();
 builder.Services.AddSingleton<ITelegramUpdateHandler>(sp => sp.GetRequiredService<UpdateRouter>());
+builder.Services.AddHostedService<TelegramMiniAppMenuButtonService>();
 builder.Services.AddHostedService<TelegramBotService>();
 
 // ── Session scheduler ────────────────────────────────────────────────
 builder.Services.AddHostedService<SessionSchedulerService>();
+builder.Services.AddHostedService<RescheduleVotingDeadlineService>();
 
 var host = builder.Build();
 

src/GmRelay.Bot/appsettings.json

@@ -7,6 +7,7 @@
     }
   },
   "Telegram": {
-    "BotToken": ""
+    "BotToken": "",
+    "MiniAppUrl": ""
   }
 }

src/GmRelay.Shared/Domain/GroupManagerRole.cs

@@ -0,0 +1,34 @@
+namespace GmRelay.Shared.Domain;
+
+public enum GroupManagerRole
+{
+    Owner,
+    CoGm
+}
+
+public static class GroupManagerRoleExtensions
+{
+    public const string OwnerValue = "Owner";
+    public const string CoGmValue = "CoGm";
+
+    public static string ToDatabaseValue(this GroupManagerRole role) => role switch
+    {
+        GroupManagerRole.Owner => OwnerValue,
+        GroupManagerRole.CoGm => CoGmValue,
+        _ => throw new ArgumentOutOfRangeException(nameof(role), role, "Unknown group manager role.")
+    };
+
+    public static GroupManagerRole FromDatabaseValue(string value) => value switch
+    {
+        OwnerValue => GroupManagerRole.Owner,
+        CoGmValue => GroupManagerRole.CoGm,
+        _ => throw new ArgumentOutOfRangeException(nameof(value), value, "Unknown group manager role.")
+    };
+
+    public static string ToDisplayName(this GroupManagerRole role) => role switch
+    {
+        GroupManagerRole.Owner => "Owner",
+        GroupManagerRole.CoGm => "Co-GM",
+        _ => throw new ArgumentOutOfRangeException(nameof(role), role, "Unknown group manager role.")
+    };
+}

src/GmRelay.Web/Components/App.razor

@@ -13,6 +13,7 @@
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet" />
     <link rel="stylesheet" href="@Assets["app.css"]" />
     <link rel="stylesheet" href="@Assets["GmRelay.Web.styles.css"]" />
+    <script src="https://telegram.org/js/telegram-web-app.js"></script>
     <ImportMap />
     <link rel="icon" type="image/png" href="favicon.png" />
     <HeadOutlet @rendermode="InteractiveServer" />
@@ -23,6 +24,14 @@
     <ReconnectModal />
     <script src="@Assets["_framework/blazor.web.js"]"></script>
     <script>
+        (function () {
+            if (window.Telegram && window.Telegram.WebApp && window.Telegram.WebApp.initData) {
+                var webApp = window.Telegram.WebApp;
+                document.body.classList.add('telegram-mini-app');
+                webApp.ready();
+            }
+        })();
+
         window.loadTelegramWidget = function (botUsername, authUrl) {
             var container = document.getElementById('telegram-login-container');
             if (!container) return;
@@ -36,6 +45,32 @@
             script.setAttribute('data-request-access', 'write');
             container.appendChild(script);
         };
+
+        window.authenticateTelegramMiniApp = async function (authUrl, redirectUrl) {
+            if (!window.Telegram || !window.Telegram.WebApp || !window.Telegram.WebApp.initData) {
+                return false;
+            }
+
+            var webApp = window.Telegram.WebApp;
+            document.body.classList.add('telegram-mini-app');
+            webApp.ready();
+            webApp.expand();
+
+            var response = await fetch(authUrl, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'same-origin',
+                body: JSON.stringify({ initData: webApp.initData })
+            });
+
+            if (!response.ok) {
+                return false;
+            }
+
+            var payload = await response.json();
+            window.location.href = payload.redirectUrl || redirectUrl || '/';
+            return true;
+        };
     </script>
 </body>
 

src/GmRelay.Web/Components/Layout/MainLayout.razor.css

@@ -60,12 +60,17 @@
 /* === Mobile Responsive === */
 @media (max-width: 768px) {
     .sidebar {
-        transform: translateX(-100%);
+        transform: none;
-        width: 280px;
+        width: 100%;
+        height: auto;
+        min-height: 0;
+        position: sticky;
+        border-right: none;
+        border-bottom: 1px solid var(--border-color);
     }
 
-    .sidebar.open {
+    .page {
-        transform: translateX(0);
+        display: block;
     }
 
     .main-area {

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

@@ -25,6 +25,15 @@
                     </svg>
                     Панель управления
                 </NavLink>
+                <NavLink class="nav-item" href="templates" @onclick="CloseMenu">
+                    <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                        <rect x="3" y="4" width="18" height="16" rx="2"/>
+                        <path d="M7 8h10"/>
+                        <path d="M7 12h6"/>
+                        <path d="M7 16h8"/>
+                    </svg>
+                    Шаблоны
+                </NavLink>
             </div>
 
             <div class="nav-footer">
@@ -47,7 +56,7 @@
                     </button>
                 </form>
 
-                <div class="nav-version">v1.3.0</div>
+                <div class="nav-version">v1.9.0</div>
             </div>
         </Authorized>
         <NotAuthorized>

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

@@ -56,13 +56,17 @@
 .nav-section {
     padding: 0 0.75rem;
     flex: 1;
+    display: flex;
+    flex-direction: column;
+    gap: 0.25rem;
 }
 
 /* === Nav Items === */
-.nav-item {
+.nav-section ::deep .nav-item {
     display: flex;
     align-items: center;
     gap: 0.75rem;
+    width: 100%;
     padding: 0.625rem 0.875rem;
     border-radius: var(--radius-sm);
     color: var(--text-secondary);
@@ -70,16 +74,16 @@
     font-size: 0.875rem;
     font-weight: 500;
     transition: all var(--transition-normal);
-    margin-bottom: 0.125rem;
+    white-space: nowrap;
+    box-sizing: border-box;
 }
 
-.nav-item:hover {
+.nav-section ::deep .nav-item:hover {
     background: rgba(255, 255, 255, 0.06);
     color: var(--text-primary);
 }
 
-.nav-item.active,
+.nav-section ::deep .nav-item.active {
-.nav-item ::deep a.active {
     background: rgba(124, 58, 237, 0.15);
     color: var(--accent-primary);
     border: 1px solid rgba(124, 58, 237, 0.2);

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

@@ -0,0 +1,402 @@
+@page "/templates"
+@using GmRelay.Web.Services
+@using GmRelay.Shared.Domain
+@using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Authorization
+@attribute [Authorize]
+@inject AuthorizedSessionService SessionService
+@inject AuthenticationStateProvider AuthStateProvider
+@inject NavigationManager Navigation
+
+<PageTitle>Шаблоны кампаний — GM-Relay</PageTitle>
+
+<div class="page-container">
+    <ul class="gm-breadcrumb animate-fade-in">
+        <li><a href="/">Главная</a></li>
+        <li class="active">Шаблоны кампаний</li>
+    </ul>
+
+    <div class="page-header animate-fade-in">
+        <h2>📋 Шаблоны кампаний</h2>
+        <p>Сохраняйте типовые кампании один раз и применяйте их на странице нужной группы.</p>
+    </div>
+
+    @if (!string.IsNullOrEmpty(errorMessage))
+    {
+        <div class="gm-alert gm-alert-danger" style="margin-bottom: 1rem;">
+            ⚠️ @errorMessage
+        </div>
+    }
+
+    @if (!string.IsNullOrEmpty(successMessage))
+    {
+        <div class="gm-alert gm-alert-success" style="margin-bottom: 1rem;">
+            ✅ @successMessage
+        </div>
+    }
+
+    @if (groups is null)
+    {
+        <div class="glass-card" style="padding: 2rem;">
+            <div class="skeleton skeleton-text" style="width: 80%; margin-bottom: 1rem;"></div>
+            <div class="skeleton skeleton-text" style="width: 60%; margin-bottom: 0.75rem;"></div>
+            <div class="skeleton skeleton-text" style="width: 70%;"></div>
+        </div>
+    }
+    else if (groups.Count == 0)
+    {
+        <div class="glass-card">
+            <div class="empty-state">
+                <div class="empty-state-icon">🤖</div>
+                <div class="empty-state-title">Нет доступных групп</div>
+                <p class="empty-state-text">Добавьте бота GM-Relay в группу Telegram, чтобы создать первый шаблон кампании.</p>
+            </div>
+        </div>
+    }
+    else
+    {
+        <div class="glass-card campaign-template-panel animate-slide-up">
+            <div class="batch-bulk-header">
+                <div>
+                    <h3>Группа для шаблонов</h3>
+                    <p>@(SelectedGroup?.Name ?? "Выберите группу")</p>
+                </div>
+                @if (SelectedGroup is not null)
+                {
+                    <span class="status-badge @(SelectedGroup.ManagerRole == GroupManagerRoleExtensions.OwnerValue ? "status-success" : "status-info")">
+                        @FormatRole(SelectedGroup.ManagerRole)
+                    </span>
+                }
+            </div>
+
+            <div class="template-group-selector">
+                <select value="@selectedGroupId" @onchange="OnSelectedGroupChanged" class="gm-form-control">
+                    @foreach (var group in groups)
+                    {
+                        <option value="@group.Id">@group.Name</option>
+                    }
+                </select>
+                @if (SelectedGroup is not null)
+                {
+                    <a href="/group/@SelectedGroup.Id" class="btn-gm btn-gm-outline">Открыть группу →</a>
+                }
+            </div>
+        </div>
+
+        <div class="glass-card campaign-template-panel animate-slide-up">
+            <div class="batch-bulk-header">
+                <div>
+                    <h3>Новый шаблон</h3>
+                    <p>Эти параметры будут использоваться при запуске batch из группы.</p>
+                </div>
+                <span class="status-badge status-info">Template</span>
+            </div>
+
+            <EditForm Model="@templateModel" OnValidSubmit="CreateCampaignTemplate">
+                <div class="campaign-template-fields">
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Название шаблона</label>
+                        <InputText @bind-Value="templateModel.Name" class="gm-form-control" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Название кампании</label>
+                        <InputText @bind-Value="templateModel.Title" class="gm-form-control" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Ссылка</label>
+                        <InputText @bind-Value="templateModel.JoinLink" class="gm-form-control" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Игр</label>
+                        <InputNumber @bind-Value="templateModel.SessionCount" class="gm-form-control" min="1" max="52" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Интервал, дней</label>
+                        <InputNumber @bind-Value="templateModel.IntervalDays" class="gm-form-control" min="1" max="365" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Мест</label>
+                        <InputNumber @bind-Value="templateModel.MaxPlayers" class="gm-form-control" min="1" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Уведомления</label>
+                        <select @bind="templateModel.NotificationMode" class="gm-form-control">
+                            <option value="@SessionNotificationModeExtensions.GroupAndDirectValue">В группе и в личку</option>
+                            <option value="@SessionNotificationModeExtensions.GroupOnlyValue">Только в группе</option>
+                        </select>
+                    </div>
+                </div>
+
+                <button type="submit" class="btn-gm btn-gm-primary" disabled="@isCreatingTemplate">
+                    @(isCreatingTemplate ? "⏳ Сохраняем..." : "💾 Сохранить шаблон")
+                </button>
+            </EditForm>
+        </div>
+
+        <div class="glass-card campaign-template-panel animate-slide-up">
+            <div class="batch-bulk-header">
+                <div>
+                    <h3>Сохранённые шаблоны</h3>
+                    <p>@campaignTemplateModels.Count для выбранной группы</p>
+                </div>
+                <span class="status-badge status-info">@campaignTemplateModels.Count</span>
+            </div>
+
+            @if (campaignTemplates is null)
+            {
+                <div class="skeleton skeleton-text" style="width: 70%; margin-bottom: 0.75rem;"></div>
+                <div class="skeleton skeleton-text" style="width: 55%;"></div>
+            }
+            else if (campaignTemplateModels.Count == 0)
+            {
+                <div class="empty-state empty-state-compact">
+                    <div class="empty-state-title">Шаблонов пока нет</div>
+                    <p class="empty-state-text">Создайте первый шаблон для выбранной группы.</p>
+                </div>
+            }
+            else
+            {
+                <div class="campaign-template-list">
+                    @foreach (var template in campaignTemplateModels)
+                    {
+                        <div class="campaign-template-row template-management-row">
+                            <div class="campaign-template-info">
+                                <h3>@template.Name</h3>
+                                <p>@FormatTemplateSummary(template)</p>
+                            </div>
+                            <div class="template-management-actions">
+                                <span class="status-badge status-neutral">@FormatLocalMoscow(template.UpdatedAt.ToMoscow())</span>
+                                <button type="button" class="btn-gm btn-gm-danger" disabled="@(deletingTemplateId == template.Id)" @onclick="() => DeleteCampaignTemplate(template)">
+                                    @(deletingTemplateId == template.Id ? "⏳ Удаляем..." : "Удалить")
+                                </button>
+                            </div>
+                        </div>
+                    }
+                </div>
+            }
+        </div>
+    }
+</div>
+
+@code {
+    private List<WebGameGroup>? groups;
+    private List<WebCampaignTemplate>? campaignTemplates;
+    private List<CampaignTemplateManagementModel> campaignTemplateModels = [];
+    private Guid selectedGroupId;
+    private Guid? deletingTemplateId;
+    private bool isCreatingTemplate;
+    private long telegramId;
+    private string? errorMessage;
+    private string? successMessage;
+    private CampaignTemplateEditModel templateModel = new();
+
+    private WebGameGroup? SelectedGroup => groups?.FirstOrDefault(group => group.Id == selectedGroupId);
+
+    protected override async Task OnInitializedAsync()
+    {
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        if (!authState.User.TryGetTelegramId(out telegramId))
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
+        groups = await SessionService.GetGroupsForGmAsync(telegramId);
+        selectedGroupId = groups.FirstOrDefault()?.Id ?? Guid.Empty;
+
+        if (selectedGroupId != Guid.Empty)
+        {
+            await LoadTemplates();
+        }
+    }
+
+    private async Task OnSelectedGroupChanged(ChangeEventArgs args)
+    {
+        if (!Guid.TryParse(args.Value?.ToString(), out var groupId))
+        {
+            return;
+        }
+
+        selectedGroupId = groupId;
+        errorMessage = null;
+        successMessage = null;
+        await LoadTemplates();
+    }
+
+    private async Task LoadTemplates()
+    {
+        campaignTemplates = null;
+        campaignTemplateModels = [];
+
+        var templates = await SessionService.GetCampaignTemplatesForGmAsync(selectedGroupId, telegramId);
+        if (templates is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
+        campaignTemplates = templates;
+        RebuildCampaignTemplateModels();
+    }
+
+    private async Task CreateCampaignTemplate()
+    {
+        errorMessage = null;
+        successMessage = null;
+
+        if (selectedGroupId == Guid.Empty)
+        {
+            errorMessage = "Выберите группу для шаблона.";
+            return;
+        }
+
+        if (!ValidateCampaignTemplate(templateModel))
+        {
+            errorMessage = "Шаблон должен иметь название, ссылку, 1-52 игр, шаг 1-365 дней и положительный лимит мест, если он указан.";
+            return;
+        }
+
+        isCreatingTemplate = true;
+
+        try
+        {
+            await SessionService.CreateCampaignTemplateForGmAsync(
+                selectedGroupId,
+                telegramId,
+                new CreateCampaignTemplateRequest(
+                    templateModel.Name,
+                    templateModel.Title,
+                    templateModel.JoinLink,
+                    templateModel.SessionCount,
+                    templateModel.IntervalDays,
+                    templateModel.MaxPlayers,
+                    SessionNotificationModeExtensions.FromDatabaseValue(templateModel.NotificationMode)));
+
+            templateModel = new();
+            successMessage = "Шаблон кампании сохранён.";
+            await LoadTemplates();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось сохранить шаблон: " + ex.Message;
+        }
+        finally
+        {
+            isCreatingTemplate = false;
+        }
+    }
+
+    private async Task DeleteCampaignTemplate(CampaignTemplateManagementModel template)
+    {
+        errorMessage = null;
+        successMessage = null;
+        deletingTemplateId = template.Id;
+
+        try
+        {
+            await SessionService.DeleteCampaignTemplateForGmAsync(template.Id, telegramId);
+            successMessage = "Шаблон кампании удалён.";
+            await LoadTemplates();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось удалить шаблон: " + ex.Message;
+        }
+        finally
+        {
+            deletingTemplateId = null;
+        }
+    }
+
+    private void RebuildCampaignTemplateModels()
+    {
+        campaignTemplateModels = campaignTemplates?
+            .OrderByDescending(template => template.UpdatedAt)
+            .ThenBy(template => template.Name)
+            .Select(template => new CampaignTemplateManagementModel
+            {
+                Id = template.Id,
+                Name = template.Name,
+                Title = template.Title,
+                JoinLink = template.JoinLink,
+                SessionCount = template.SessionCount,
+                IntervalDays = template.IntervalDays,
+                MaxPlayers = template.MaxPlayers,
+                NotificationMode = template.NotificationMode,
+                UpdatedAt = template.UpdatedAt
+            })
+            .ToList() ?? [];
+    }
+
+    private static bool ValidateCampaignTemplate(CampaignTemplateEditModel template)
+    {
+        template.Name = template.Name.Trim();
+        template.Title = template.Title.Trim();
+        template.JoinLink = template.JoinLink.Trim();
+
+        if (template.MaxPlayers.HasValue && template.MaxPlayers.Value <= 0)
+        {
+            return false;
+        }
+
+        return template.Name.Length > 0 &&
+               template.Title.Length > 0 &&
+               template.JoinLink.Length > 0 &&
+               template.SessionCount is >= 1 and <= 52 &&
+               template.IntervalDays is >= 1 and <= 365;
+    }
+
+    private static string FormatTemplateSummary(CampaignTemplateManagementModel template)
+    {
+        var seats = template.MaxPlayers.HasValue
+            ? $"{template.MaxPlayers.Value.ToString(System.Globalization.CultureInfo.InvariantCulture)} мест"
+            : "без лимита";
+
+        return $"{template.Title} · {template.SessionCount} игр · каждые {template.IntervalDays} дн. · {seats} · {FormatNotificationMode(template.NotificationMode)}";
+    }
+
+    private static string FormatNotificationMode(string notificationMode) =>
+        SessionNotificationModeExtensions.FromDatabaseValue(notificationMode) switch
+        {
+            SessionNotificationMode.GroupOnly => "только группа",
+            _ => "группа и личка"
+        };
+
+    private static string FormatRole(string role) =>
+        GroupManagerRoleExtensions.FromDatabaseValue(role).ToDisplayName();
+
+    private static string FormatLocalMoscow(DateTime localMoscow) =>
+        localMoscow.ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"));
+
+    private sealed class CampaignTemplateEditModel
+    {
+        public string Name { get; set; } = "";
+        public string Title { get; set; } = "";
+        public string JoinLink { get; set; } = "";
+        public int SessionCount { get; set; } = 6;
+        public int IntervalDays { get; set; } = 7;
+        public int? MaxPlayers { get; set; }
+        public string NotificationMode { get; set; } = SessionNotificationModeExtensions.GroupAndDirectValue;
+    }
+
+    private sealed class CampaignTemplateManagementModel
+    {
+        public Guid Id { get; init; }
+        public string Name { get; init; } = "";
+        public string Title { get; init; } = "";
+        public string JoinLink { get; init; } = "";
+        public int SessionCount { get; init; }
+        public int IntervalDays { get; init; }
+        public int? MaxPlayers { get; init; }
+        public string NotificationMode { get; init; } = SessionNotificationModeExtensions.GroupAndDirectValue;
+        public DateTime UpdatedAt { get; init; }
+    }
+}

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

@@ -20,6 +20,57 @@
         <h2>📅 Предстоящие игры</h2>
     </div>
 
+    @if (groupManagement is not null)
+    {
+        <div class="glass-card animate-slide-up" style="margin-bottom: 1rem;">
+            <div class="batch-bulk-header">
+                <div>
+                    <h3>Управление группой</h3>
+                    <p>@groupManagement.Group.Name · @FormatRole(CurrentUserRole)</p>
+                </div>
+                <span class="status-badge status-info">@FormatRole(CurrentUserRole)</span>
+            </div>
+
+            <div style="display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1rem;">
+                @foreach (var manager in groupManagement.Managers)
+                {
+                    <span class="status-badge @(manager.Role == GroupManagerRoleExtensions.OwnerValue ? "status-success" : "status-info")">
+                        @FormatManager(manager)
+                    </span>
+                    @if (groupManagement.CurrentUserIsOwner && manager.Role == GroupManagerRoleExtensions.CoGmValue)
+                    {
+                        <button type="button" class="btn-gm btn-gm-outline" style="font-size: 0.75rem; padding: 0.25rem 0.5rem;" disabled="@(removingCoGmId == manager.TelegramId)" @onclick="() => RemoveCoGm(manager.TelegramId)">
+                            @(removingCoGmId == manager.TelegramId ? "⏳ Удаляем..." : "Убрать")
+                        </button>
+                    }
+                }
+            </div>
+
+            @if (groupManagement.CurrentUserIsOwner)
+            {
+                <EditForm Model="@coGmModel" OnValidSubmit="AddCoGm">
+                    <div class="batch-bulk-fields">
+                        <div class="gm-form-group">
+                            <label class="gm-form-label">Telegram ID co-GM</label>
+                            <InputNumber @bind-Value="coGmModel.TelegramId" class="gm-form-control" min="1" />
+                        </div>
+                        <div class="gm-form-group">
+                            <label class="gm-form-label">Имя</label>
+                            <InputText @bind-Value="coGmModel.DisplayName" class="gm-form-control" />
+                        </div>
+                        <div class="gm-form-group">
+                            <label class="gm-form-label">Username</label>
+                            <InputText @bind-Value="coGmModel.TelegramUsername" class="gm-form-control" />
+                        </div>
+                    </div>
+                    <button type="submit" class="btn-gm btn-gm-primary" disabled="@isAddingCoGm">
+                        @(isAddingCoGm ? "⏳ Добавляем..." : "➕ Добавить co-GM")
+                    </button>
+                </EditForm>
+            }
+        </div>
+    }
+
     @if (!string.IsNullOrEmpty(errorMessage))
     {
         <div class="gm-alert gm-alert-danger" style="margin-bottom: 1rem;">
@@ -34,6 +85,47 @@
         </div>
     }
 
+    @if (campaignTemplates is not null)
+    {
+        <div class="glass-card campaign-template-panel animate-slide-up">
+            <div class="batch-bulk-header">
+                <div>
+                    <h3>Применить шаблон</h3>
+                    <p>@campaignTemplateModels.Count доступных для этой группы</p>
+                </div>
+                <a href="/templates" class="btn-gm btn-gm-outline">⚙️ Управлять шаблонами</a>
+            </div>
+
+            @if (campaignTemplateModels.Count == 0)
+            {
+                <div class="empty-state empty-state-compact">
+                    <div class="empty-state-title">Шаблонов пока нет</div>
+                    <p class="empty-state-text">Создайте шаблоны в отдельной вкладке, а здесь запускайте из них новые batch-расписания.</p>
+                </div>
+            }
+            else
+            {
+                <div class="campaign-template-list">
+                    @foreach (var template in campaignTemplateModels)
+                    {
+                        <div class="campaign-template-row">
+                            <div class="campaign-template-info">
+                                <h3>@template.Name</h3>
+                                <p>@FormatTemplateSummary(template)</p>
+                            </div>
+                            <div class="campaign-template-actions">
+                                <input type="datetime-local" @bind="template.FirstScheduledAtLocal" class="gm-form-control" />
+                                <button type="button" class="btn-gm btn-gm-success" disabled="@IsTemplateBusy(template)" @onclick="() => CreateBatchFromTemplate(template)">
+                                    @(processingTemplateId == template.Id ? "⏳ Создаём..." : "📅 Создать batch")
+                                </button>
+                            </div>
+                        </div>
+                    }
+                </div>
+            }
+        </div>
+    }
+
     @if (sessions == null)
     {
         <div class="glass-card" style="padding: 2rem;">
@@ -212,12 +304,19 @@
 @code {
     [Parameter] public Guid GroupId { get; set; }
     private List<WebSession>? sessions;
+    private List<WebCampaignTemplate>? campaignTemplates;
+    private WebGroupManagement? groupManagement;
     private List<BatchBulkEditModel> batchModels = [];
+    private List<CampaignTemplateUsageModel> campaignTemplateModels = [];
     private Guid? promotingSessionId;
     private Guid? processingBatchId;
+    private Guid? processingTemplateId;
+    private long? removingCoGmId;
+    private bool isAddingCoGm;
     private long telegramId;
     private string? errorMessage;
     private string? successMessage;
+    private CoGmEditModel coGmModel = new();
 
     protected override async Task OnInitializedAsync()
     {
@@ -233,6 +332,13 @@
 
     private async Task LoadSessions()
     {
+        groupManagement = await SessionService.GetGroupManagementForGmAsync(GroupId, telegramId);
+        if (groupManagement is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
         sessions = await SessionService.GetUpcomingSessionsForGmAsync(GroupId, telegramId);
         if (sessions is null)
         {
@@ -240,7 +346,81 @@
             return;
         }
 
+        campaignTemplates = await SessionService.GetCampaignTemplatesForGmAsync(GroupId, telegramId);
+        if (campaignTemplates is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
         RebuildBatchModels();
+        RebuildCampaignTemplateModels();
+    }
+
+    private async Task AddCoGm()
+    {
+        errorMessage = null;
+        successMessage = null;
+
+        if (!coGmModel.TelegramId.HasValue || coGmModel.TelegramId.Value <= 0)
+        {
+            errorMessage = "Telegram ID co-GM должен быть положительным числом.";
+            return;
+        }
+
+        isAddingCoGm = true;
+
+        try
+        {
+            await SessionService.AddCoGmForOwnerAsync(
+                GroupId,
+                telegramId,
+                coGmModel.TelegramId.Value,
+                coGmModel.DisplayName,
+                coGmModel.TelegramUsername);
+
+            coGmModel = new();
+            successMessage = "Co-GM добавлен.";
+            await LoadSessions();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось добавить co-GM: " + ex.Message;
+        }
+        finally
+        {
+            isAddingCoGm = false;
+        }
+    }
+
+    private async Task RemoveCoGm(long coGmTelegramId)
+    {
+        errorMessage = null;
+        successMessage = null;
+        removingCoGmId = coGmTelegramId;
+
+        try
+        {
+            await SessionService.RemoveCoGmForOwnerAsync(GroupId, telegramId, coGmTelegramId);
+            successMessage = "Co-GM удалён.";
+            await LoadSessions();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось удалить co-GM: " + ex.Message;
+        }
+        finally
+        {
+            removingCoGmId = null;
+        }
     }
 
     private async Task PromoteWaitlisted(Guid sessionId)
@@ -369,6 +549,39 @@
         }
     }
 
+    private async Task CreateBatchFromTemplate(CampaignTemplateUsageModel template)
+    {
+        errorMessage = null;
+        successMessage = null;
+        processingTemplateId = template.Id;
+
+        try
+        {
+            var utcTime = new DateTimeOffset(template.FirstScheduledAtLocal, TimeSpan.FromHours(3)).ToUniversalTime().UtcDateTime;
+            if (utcTime <= DateTime.UtcNow)
+            {
+                errorMessage = "Первая дата batch должна быть в будущем.";
+                return;
+            }
+
+            var createdBatch = await SessionService.CreateBatchFromCampaignTemplateForGmAsync(template.Id, telegramId, utcTime);
+            successMessage = $"Batch создан из шаблона: {createdBatch.SessionCount} игр.";
+            await LoadSessions();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось создать batch из шаблона: " + ex.Message;
+        }
+        finally
+        {
+            processingTemplateId = null;
+        }
+    }
+
     private void RebuildBatchModels()
     {
         batchModels = sessions?
@@ -395,6 +608,27 @@
             .ToList() ?? [];
     }
 
+    private void RebuildCampaignTemplateModels()
+    {
+        var defaultStart = DateTime.UtcNow.AddDays(7).ToMoscow();
+        campaignTemplateModels = campaignTemplates?
+            .OrderByDescending(template => template.UpdatedAt)
+            .ThenBy(template => template.Name)
+            .Select(template => new CampaignTemplateUsageModel
+            {
+                Id = template.Id,
+                Name = template.Name,
+                Title = template.Title,
+                JoinLink = template.JoinLink,
+                SessionCount = template.SessionCount,
+                IntervalDays = template.IntervalDays,
+                MaxPlayers = template.MaxPlayers,
+                NotificationMode = template.NotificationMode,
+                FirstScheduledAtLocal = defaultStart
+            })
+            .ToList() ?? [];
+    }
+
     private static bool ValidateBatchDetails(BatchBulkEditModel batch)
     {
         batch.Title = batch.Title.Trim();
@@ -404,6 +638,24 @@
 
     private bool IsBatchBusy(BatchBulkEditModel batch) => processingBatchId == batch.BatchId;
 
+    private bool IsTemplateBusy(CampaignTemplateUsageModel template) => processingTemplateId == template.Id;
+
+    private string CurrentUserRole =>
+        groupManagement?.Managers.FirstOrDefault(manager => manager.TelegramId == telegramId)?.Role
+        ?? GroupManagerRoleExtensions.CoGmValue;
+
+    private static string FormatRole(string role) =>
+        GroupManagerRoleExtensions.FromDatabaseValue(role).ToDisplayName();
+
+    private static string FormatManager(WebGroupManager manager)
+    {
+        var username = string.IsNullOrWhiteSpace(manager.TelegramUsername)
+            ? manager.TelegramId.ToString(System.Globalization.CultureInfo.InvariantCulture)
+            : "@" + manager.TelegramUsername;
+
+        return $"{FormatRole(manager.Role)} · {manager.DisplayName} · {username}";
+    }
+
     private static int InferIntervalDays(IReadOnlyList<WebSession> orderedSessions)
     {
         if (orderedSessions.Count < 2)
@@ -433,6 +685,22 @@
     private static string FormatBatchSummary(BatchBulkEditModel batch) =>
         $"{batch.SessionCount} игр · {FormatLocalMoscow(batch.FirstScheduledAtLocal)} — {FormatLocalMoscow(batch.LastScheduledAtLocal)}";
 
+    private static string FormatTemplateSummary(CampaignTemplateUsageModel template)
+    {
+        var seats = template.MaxPlayers.HasValue
+            ? $"{template.MaxPlayers.Value.ToString(System.Globalization.CultureInfo.InvariantCulture)} мест"
+            : "без лимита";
+
+        return $"{template.Title} · {template.SessionCount} игр · каждые {template.IntervalDays} дн. · {seats} · {FormatNotificationMode(template.NotificationMode)}";
+    }
+
+    private static string FormatNotificationMode(string notificationMode) =>
+        SessionNotificationModeExtensions.FromDatabaseValue(notificationMode) switch
+        {
+            SessionNotificationMode.GroupOnly => "только группа",
+            _ => "группа и личка"
+        };
+
     private static string FormatLocalMoscow(DateTime localMoscow) =>
         localMoscow.ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"));
 
@@ -466,4 +734,24 @@
         public int SessionCount { get; init; }
         public string CloneInterval { get; set; } = "week";
     }
+
+    private sealed class CampaignTemplateUsageModel
+    {
+        public Guid Id { get; init; }
+        public string Name { get; init; } = "";
+        public string Title { get; init; } = "";
+        public string JoinLink { get; init; } = "";
+        public int SessionCount { get; init; }
+        public int IntervalDays { get; init; }
+        public int? MaxPlayers { get; init; }
+        public string NotificationMode { get; init; } = SessionNotificationModeExtensions.GroupAndDirectValue;
+        public DateTime FirstScheduledAtLocal { get; set; } = DateTime.Now;
+    }
+
+    private sealed class CoGmEditModel
+    {
+        public long? TelegramId { get; set; }
+        public string DisplayName { get; set; } = "";
+        public string? TelegramUsername { get; set; }
+    }
 }

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

@@ -1,6 +1,7 @@
 @page "/"
 @using Microsoft.AspNetCore.Authorization
 @using Microsoft.AspNetCore.Components.Authorization
+@using GmRelay.Shared.Domain
 @using GmRelay.Web.Services
 @attribute [Authorize]
 @inject AuthorizedSessionService SessionService
@@ -43,6 +44,9 @@
                     <div class="group-card-icon">🎮</div>
                     <h3 class="group-card-title">@group.Name</h3>
                     <p class="group-card-id">ID: @group.TelegramChatId</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>
                     <a href="/group/@group.Id" class="btn-gm btn-gm-primary" style="width: 100%; justify-content: center; margin-top: auto;">
                         Посмотреть игры →
                     </a>
@@ -97,4 +101,7 @@
 
         groups = await SessionService.GetGroupsForGmAsync(telegramId);
     }
+
+    private static string FormatRole(string role) =>
+        GroupManagerRoleExtensions.FromDatabaseValue(role).ToDisplayName();
 }

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

@@ -0,0 +1,70 @@
+@page "/miniapp"
+@using Microsoft.AspNetCore.Components.Authorization
+@inject IJSRuntime JS
+@inject NavigationManager Navigation
+
+<PageTitle>Mini App Dashboard — GM-Relay</PageTitle>
+
+<div class="mini-app-page">
+    <div class="mini-app-auth-card">
+        <div class="mini-app-logo">🎲</div>
+        <h1>GM-Relay</h1>
+        <p>@statusMessage</p>
+
+        @if (showFallback)
+        {
+            <a href="/login" class="btn-gm btn-gm-primary">Войти через Telegram</a>
+        }
+    </div>
+</div>
+
+@code {
+    private string statusMessage = "Открываем dashboard внутри Telegram...";
+    private bool showFallback;
+
+    [CascadingParameter]
+    private Task<AuthenticationState>? AuthStateTask { get; set; }
+
+    protected override async Task OnInitializedAsync()
+    {
+        if (AuthStateTask is null)
+        {
+            return;
+        }
+
+        var user = (await AuthStateTask).User;
+        if (user.Identity?.IsAuthenticated == true)
+        {
+            Navigation.NavigateTo("/");
+        }
+    }
+
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (!firstRender)
+        {
+            return;
+        }
+
+        try
+        {
+            var authenticated = await JS.InvokeAsync<bool>(
+                "authenticateTelegramMiniApp",
+                "/auth/telegram-webapp",
+                "/");
+
+            if (!authenticated)
+            {
+                statusMessage = "Mini App доступен из Telegram. Для браузера используйте обычный вход.";
+                showFallback = true;
+                StateHasChanged();
+            }
+        }
+        catch (JSException)
+        {
+            statusMessage = "Не удалось получить данные Telegram Mini App. Попробуйте открыть dashboard из бота.";
+            showFallback = true;
+            StateHasChanged();
+        }
+    }
+}

src/GmRelay.Web/Program.cs

@@ -87,23 +87,36 @@ app.MapGet("/auth/telegram", async (HttpContext context, TelegramAuthService aut
 {
     if (authService.Verify(context.Request.Query, out var telegramId, out var name))
     {
-        var claims = new List<Claim>
-        {
-            new Claim(ClaimTypes.NameIdentifier, telegramId.ToString()),
-            new Claim(ClaimTypes.Name, name),
-            new Claim("TelegramId", telegramId.ToString())
-        };
-
-        var claimsIdentity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);
         var authProperties = new AuthenticationProperties { IsPersistent = true };
-
+        await context.SignInAsync(
-        await context.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, new ClaimsPrincipal(claimsIdentity), authProperties);
+            CookieAuthenticationDefaults.AuthenticationScheme,
+            CreateTelegramPrincipal(telegramId, name),
+            authProperties);
         return Results.Redirect("/");
     }
 
     return Results.Redirect("/login?error=auth_failed");
 });
 
+app.MapPost("/auth/telegram-webapp", async (
+    HttpContext context,
+    TelegramAuthService authService,
+    TelegramWebAppAuthRequest request) =>
+{
+    if (!authService.VerifyWebAppInitData(request.InitData, out var telegramId, out var name))
+    {
+        return Results.Unauthorized();
+    }
+
+    var authProperties = new AuthenticationProperties { IsPersistent = true };
+    await context.SignInAsync(
+        CookieAuthenticationDefaults.AuthenticationScheme,
+        CreateTelegramPrincipal(telegramId, name),
+        authProperties);
+
+    return Results.Ok(new { redirectUrl = "/" });
+}).DisableAntiforgery();
+
 app.MapPost("/auth/logout", async (HttpContext context) =>
 {
     await context.SignOutAsync(CookieAuthenticationDefaults.AuthenticationScheme);
@@ -111,3 +124,18 @@ app.MapPost("/auth/logout", async (HttpContext context) =>
 });
 
 app.Run();
+
+static ClaimsPrincipal CreateTelegramPrincipal(long telegramId, string name)
+{
+    var claims = new List<Claim>
+    {
+        new(ClaimTypes.NameIdentifier, telegramId.ToString(System.Globalization.CultureInfo.InvariantCulture)),
+        new(ClaimTypes.Name, name),
+        new("TelegramId", telegramId.ToString(System.Globalization.CultureInfo.InvariantCulture))
+    };
+
+    var claimsIdentity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);
+    return new ClaimsPrincipal(claimsIdentity);
+}
+
+public sealed record TelegramWebAppAuthRequest(string InitData);

src/GmRelay.Web/Services/AuthorizedSessionService.cs

@@ -7,6 +7,24 @@ public sealed class AuthorizedSessionService(ISessionStore sessionStore)
     public Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId) =>
         sessionStore.GetGroupsForGmAsync(gmId);
 
+    public async Task<WebGroupManagement?> GetGroupManagementForGmAsync(Guid groupId, long gmId)
+    {
+        if (!await GroupBelongsToGmAsync(groupId, gmId))
+        {
+            return null;
+        }
+
+        var group = await sessionStore.GetGroupAsync(groupId);
+        if (group is null)
+        {
+            return null;
+        }
+
+        var managers = await sessionStore.GetGroupManagersAsync(groupId);
+        var isOwner = await sessionStore.IsGroupOwnerAsync(groupId, gmId);
+        return new WebGroupManagement(group, managers, isOwner);
+    }
+
     public async Task<List<WebSession>?> GetUpcomingSessionsForGmAsync(Guid groupId, long gmId)
     {
         if (!await GroupBelongsToGmAsync(groupId, gmId))
@@ -110,9 +128,143 @@ public sealed class AuthorizedSessionService(ISessionStore sessionStore)
         return await sessionStore.CloneBatchAsync(batchId, batch.GroupId, interval);
     }
 
+    public async Task<List<WebCampaignTemplate>?> GetCampaignTemplatesForGmAsync(Guid groupId, long gmId)
+    {
+        if (!await GroupBelongsToGmAsync(groupId, gmId))
+        {
+            return null;
+        }
+
+        return await sessionStore.GetCampaignTemplatesAsync(groupId);
+    }
+
+    public async Task<WebCampaignTemplate> CreateCampaignTemplateForGmAsync(
+        Guid groupId,
+        long gmId,
+        CreateCampaignTemplateRequest request)
+    {
+        if (!await GroupBelongsToGmAsync(groupId, gmId))
+        {
+            throw new SessionAccessDeniedException(groupId, gmId);
+        }
+
+        var normalizedRequest = NormalizeCampaignTemplateRequest(request);
+        return await sessionStore.CreateCampaignTemplateAsync(groupId, normalizedRequest);
+    }
+
+    public async Task DeleteCampaignTemplateForGmAsync(Guid templateId, long gmId)
+    {
+        var template = await sessionStore.GetCampaignTemplateAsync(templateId);
+        if (template is null || !await GroupBelongsToGmAsync(template.GroupId, gmId))
+        {
+            throw new SessionAccessDeniedException(templateId, gmId);
+        }
+
+        await sessionStore.DeleteCampaignTemplateAsync(templateId, template.GroupId);
+    }
+
+    public async Task<WebSessionBatch> CreateBatchFromCampaignTemplateForGmAsync(
+        Guid templateId,
+        long gmId,
+        DateTime firstScheduledAt)
+    {
+        if (firstScheduledAt <= DateTime.UtcNow)
+        {
+            throw new ArgumentOutOfRangeException(nameof(firstScheduledAt), firstScheduledAt, "First scheduled time must be in the future.");
+        }
+
+        var template = await sessionStore.GetCampaignTemplateAsync(templateId);
+        if (template is null || !await GroupBelongsToGmAsync(template.GroupId, gmId))
+        {
+            throw new SessionAccessDeniedException(templateId, gmId);
+        }
+
+        return await sessionStore.CreateBatchFromTemplateAsync(templateId, template.GroupId, firstScheduledAt);
+    }
+
+    public async Task AddCoGmForOwnerAsync(Guid groupId, long ownerTelegramId, long coGmTelegramId, string displayName, string? telegramUsername)
+    {
+        if (coGmTelegramId <= 0)
+        {
+            throw new ArgumentOutOfRangeException(nameof(coGmTelegramId), coGmTelegramId, "Telegram id must be greater than zero.");
+        }
+
+        if (ownerTelegramId == coGmTelegramId)
+        {
+            throw new InvalidOperationException("Owner is already a group manager.");
+        }
+
+        if (!await sessionStore.IsGroupOwnerAsync(groupId, ownerTelegramId))
+        {
+            throw new SessionAccessDeniedException(groupId, ownerTelegramId);
+        }
+
+        var normalizedName = string.IsNullOrWhiteSpace(displayName)
+            ? $"Telegram {coGmTelegramId.ToString(System.Globalization.CultureInfo.InvariantCulture)}"
+            : displayName.Trim();
+        var normalizedUsername = string.IsNullOrWhiteSpace(telegramUsername)
+            ? null
+            : telegramUsername.Trim().TrimStart('@');
+
+        await sessionStore.AddGroupCoGmAsync(groupId, ownerTelegramId, coGmTelegramId, normalizedName, normalizedUsername);
+    }
+
+    public async Task RemoveCoGmForOwnerAsync(Guid groupId, long ownerTelegramId, long coGmTelegramId)
+    {
+        if (!await sessionStore.IsGroupOwnerAsync(groupId, ownerTelegramId))
+        {
+            throw new SessionAccessDeniedException(groupId, ownerTelegramId);
+        }
+
+        await sessionStore.RemoveGroupCoGmAsync(groupId, coGmTelegramId);
+    }
+
     private async Task<bool> GroupBelongsToGmAsync(Guid groupId, long gmId)
     {
-        var group = await sessionStore.GetGroupAsync(groupId);
+        return await sessionStore.IsGroupManagerAsync(groupId, gmId);
-        return group?.GmTelegramId == gmId;
+    }
+
+    private static CreateCampaignTemplateRequest NormalizeCampaignTemplateRequest(CreateCampaignTemplateRequest request)
+    {
+        var name = request.Name.Trim();
+        var title = request.Title.Trim();
+        var joinLink = request.JoinLink.Trim();
+
+        if (name.Length == 0)
+        {
+            throw new ArgumentException("Template name must not be empty.", nameof(request));
+        }
+
+        if (title.Length == 0)
+        {
+            throw new ArgumentException("Session title must not be empty.", nameof(request));
+        }
+
+        if (joinLink.Length == 0)
+        {
+            throw new ArgumentException("Join link must not be empty.", nameof(request));
+        }
+
+        if (request.SessionCount is < 1 or > 52)
+        {
+            throw new ArgumentOutOfRangeException(nameof(request), request.SessionCount, "Session count must be between 1 and 52.");
+        }
+
+        if (request.IntervalDays is < 1 or > 365)
+        {
+            throw new ArgumentOutOfRangeException(nameof(request), request.IntervalDays, "Interval must be between 1 and 365 days.");
+        }
+
+        if (request.MaxPlayers is <= 0)
+        {
+            throw new ArgumentOutOfRangeException(nameof(request), request.MaxPlayers, "Seat limit must be greater than zero.");
+        }
+
+        return request with
+        {
+            Name = name,
+            Title = title,
+            JoinLink = joinLink
+        };
     }
 }

src/GmRelay.Web/Services/BatchSchedulePlanner.cs

@@ -18,8 +18,33 @@ public sealed record WebSessionBatch(
     int SessionCount,
     string NotificationMode = SessionNotificationModeExtensions.GroupAndDirectValue);
 
+public sealed record WebCampaignTemplate(
+    Guid Id,
+    Guid GroupId,
+    string Name,
+    string Title,
+    string JoinLink,
+    int SessionCount,
+    int IntervalDays,
+    int? MaxPlayers,
+    string NotificationMode,
+    DateTime CreatedAt,
+    DateTime UpdatedAt);
+
+public sealed record CreateCampaignTemplateRequest(
+    string Name,
+    string Title,
+    string JoinLink,
+    int SessionCount,
+    int IntervalDays,
+    int? MaxPlayers,
+    SessionNotificationMode NotificationMode);
+
 public static class BatchSchedulePlanner
 {
+    private const int MaxTemplateSessionCount = 52;
+    private const int MaxTemplateIntervalDays = 365;
+
     public static IReadOnlyList<DateTime> BuildFixedIntervalSchedule(
         IEnumerable<DateTime> currentSchedule,
         DateTime firstScheduledAt,
@@ -36,6 +61,26 @@ public static class BatchSchedulePlanner
             .ToList();
     }
 
+    public static IReadOnlyList<DateTime> BuildRecurringSchedule(
+        DateTime firstScheduledAt,
+        int sessionCount,
+        int intervalDays)
+    {
+        if (sessionCount is < 1 or > MaxTemplateSessionCount)
+        {
+            throw new ArgumentOutOfRangeException(nameof(sessionCount), sessionCount, "Session count must be between 1 and 52.");
+        }
+
+        if (intervalDays is < 1 or > MaxTemplateIntervalDays)
+        {
+            throw new ArgumentOutOfRangeException(nameof(intervalDays), intervalDays, "Interval must be between 1 and 365 days.");
+        }
+
+        return Enumerable.Range(0, sessionCount)
+            .Select(index => firstScheduledAt.AddDays(intervalDays * index))
+            .ToList();
+    }
+
     public static DateTime ShiftForClone(DateTime scheduledAt, BatchCloneInterval interval) =>
         interval switch
         {

src/GmRelay.Web/Services/ISessionStore.cs

@@ -6,6 +6,9 @@ public interface ISessionStore
 {
     Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId);
     Task<WebGameGroup?> GetGroupAsync(Guid groupId);
+    Task<bool> IsGroupManagerAsync(Guid groupId, long telegramId);
+    Task<bool> IsGroupOwnerAsync(Guid groupId, long telegramId);
+    Task<List<WebGroupManager>> GetGroupManagersAsync(Guid groupId);
     Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId);
     Task<WebSession?> GetSessionAsync(Guid sessionId);
     Task<WebSessionBatch?> GetBatchAsync(Guid batchId);
@@ -15,4 +18,11 @@ public interface ISessionStore
     Task UpdateBatchNotificationModeAsync(Guid batchId, Guid groupId, SessionNotificationMode notificationMode);
     Task RescheduleBatchAsync(Guid batchId, Guid groupId, DateTime firstScheduledAt, int intervalDays);
     Task<WebSessionBatch> CloneBatchAsync(Guid batchId, Guid groupId, BatchCloneInterval interval);
+    Task<List<WebCampaignTemplate>> GetCampaignTemplatesAsync(Guid groupId);
+    Task<WebCampaignTemplate?> GetCampaignTemplateAsync(Guid templateId);
+    Task<WebCampaignTemplate> CreateCampaignTemplateAsync(Guid groupId, CreateCampaignTemplateRequest request);
+    Task DeleteCampaignTemplateAsync(Guid templateId, Guid groupId);
+    Task<WebSessionBatch> CreateBatchFromTemplateAsync(Guid templateId, Guid groupId, DateTime firstScheduledAt);
+    Task AddGroupCoGmAsync(Guid groupId, long ownerTelegramId, long coGmTelegramId, string displayName, string? telegramUsername);
+    Task RemoveGroupCoGmAsync(Guid groupId, long coGmTelegramId);
 }

src/GmRelay.Web/Services/SessionService.cs

@@ -6,7 +6,24 @@ using Telegram.Bot;
 
 namespace GmRelay.Web.Services;
 
-public sealed record WebGameGroup(Guid Id, long TelegramChatId, string Name, long GmTelegramId);
+public sealed record WebGameGroup(
+    Guid Id,
+    long TelegramChatId,
+    string Name,
+    long GmTelegramId,
+    string ManagerRole = GroupManagerRoleExtensions.OwnerValue);
+
+public sealed record WebGroupManager(
+    long TelegramId,
+    string DisplayName,
+    string? TelegramUsername,
+    string Role,
+    DateTime AddedAt);
+
+public sealed record WebGroupManagement(
+    WebGameGroup Group,
+    IReadOnlyList<WebGroupManager> Managers,
+    bool CurrentUserIsOwner);
 public sealed record WebSession(
     Guid Id,
     Guid GroupId,
@@ -46,6 +63,7 @@ internal sealed record WebBatchSessionRow(
     long TelegramChatId,
     int? ThreadId,
     string NotificationMode);
+internal sealed record WebTemplateGroupDto(long TelegramChatId);
 
 public sealed class SessionService(
     NpgsqlDataSource dataSource,
@@ -56,7 +74,18 @@ public sealed class SessionService(
     {
         await using var conn = await dataSource.OpenConnectionAsync();
         return (await conn.QueryAsync<WebGameGroup>(
-            "SELECT id, telegram_chat_id AS TelegramChatId, name, gm_telegram_id AS GmTelegramId FROM game_groups WHERE gm_telegram_id = @GmId",
+            """
+            SELECT g.id,
+                   g.telegram_chat_id AS TelegramChatId,
+                   g.name,
+                   g.gm_telegram_id AS GmTelegramId,
+                   gm.role AS ManagerRole
+            FROM group_managers gm
+            JOIN players p ON p.id = gm.player_id
+            JOIN game_groups g ON g.id = gm.group_id
+            WHERE p.telegram_id = @GmId
+            ORDER BY g.name
+            """,
             new { GmId = gmId })).ToList();
     }
 
@@ -64,8 +93,145 @@ public sealed class SessionService(
     {
         await using var conn = await dataSource.OpenConnectionAsync();
         return await conn.QuerySingleOrDefaultAsync<WebGameGroup>(
-            "SELECT id, telegram_chat_id AS TelegramChatId, name, gm_telegram_id AS GmTelegramId FROM game_groups WHERE id = @GroupId",
+            """
-            new { GroupId = groupId });
+            SELECT g.id,
+                   g.telegram_chat_id AS TelegramChatId,
+                   g.name,
+                   g.gm_telegram_id AS GmTelegramId,
+                   @OwnerRole AS ManagerRole
+            FROM game_groups g
+            WHERE g.id = @GroupId
+            """,
+            new { GroupId = groupId, OwnerRole = GroupManagerRoleExtensions.OwnerValue });
+    }
+
+    public async Task<bool> IsGroupManagerAsync(Guid groupId, long telegramId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return await conn.ExecuteScalarAsync<bool>(
+            """
+            SELECT EXISTS (
+                SELECT 1
+                FROM group_managers gm
+                JOIN players p ON p.id = gm.player_id
+                WHERE gm.group_id = @GroupId
+                  AND p.telegram_id = @TelegramId
+            )
+            """,
+            new { GroupId = groupId, TelegramId = telegramId });
+    }
+
+    public async Task<bool> IsGroupOwnerAsync(Guid groupId, long telegramId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return await conn.ExecuteScalarAsync<bool>(
+            """
+            SELECT EXISTS (
+                SELECT 1
+                FROM group_managers gm
+                JOIN players p ON p.id = gm.player_id
+                WHERE gm.group_id = @GroupId
+                  AND p.telegram_id = @TelegramId
+                  AND gm.role = @OwnerRole
+            )
+            """,
+            new { GroupId = groupId, TelegramId = telegramId, OwnerRole = GroupManagerRoleExtensions.OwnerValue });
+    }
+
+    public async Task<List<WebGroupManager>> GetGroupManagersAsync(Guid groupId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return (await conn.QueryAsync<WebGroupManager>(
+            """
+            SELECT p.telegram_id AS TelegramId,
+                   p.display_name AS DisplayName,
+                   p.telegram_username AS TelegramUsername,
+                   gm.role AS Role,
+                   gm.created_at AS AddedAt
+            FROM group_managers gm
+            JOIN players p ON p.id = gm.player_id
+            WHERE gm.group_id = @GroupId
+            ORDER BY CASE gm.role WHEN @OwnerRole THEN 0 ELSE 1 END,
+                     gm.created_at,
+                     p.display_name
+            """,
+            new { GroupId = groupId, OwnerRole = GroupManagerRoleExtensions.OwnerValue })).ToList();
+    }
+
+    public async Task AddGroupCoGmAsync(
+        Guid groupId,
+        long ownerTelegramId,
+        long coGmTelegramId,
+        string displayName,
+        string? telegramUsername)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        await using var transaction = await conn.BeginTransactionAsync();
+
+        await conn.ExecuteAsync(
+            """
+            INSERT INTO players (telegram_id, display_name, telegram_username)
+            VALUES (@TelegramId, @DisplayName, @TelegramUsername)
+            ON CONFLICT (telegram_id) DO UPDATE
+            SET display_name = EXCLUDED.display_name,
+                telegram_username = EXCLUDED.telegram_username
+            """,
+            new
+            {
+                TelegramId = coGmTelegramId,
+                DisplayName = displayName,
+                TelegramUsername = telegramUsername
+            },
+            transaction);
+
+        await conn.ExecuteAsync(
+            """
+            INSERT INTO group_managers (group_id, player_id, role, added_by_player_id)
+            SELECT @GroupId,
+                   co_gm.id,
+                   @CoGmRole,
+                   owner_player.id
+            FROM players co_gm
+            LEFT JOIN players owner_player ON owner_player.telegram_id = @OwnerTelegramId
+            WHERE co_gm.telegram_id = @CoGmTelegramId
+            ON CONFLICT (group_id, player_id) DO UPDATE
+            SET role = CASE
+                    WHEN group_managers.role = @OwnerRole THEN group_managers.role
+                    ELSE EXCLUDED.role
+                END,
+                added_by_player_id = EXCLUDED.added_by_player_id
+            """,
+            new
+            {
+                GroupId = groupId,
+                OwnerTelegramId = ownerTelegramId,
+                CoGmTelegramId = coGmTelegramId,
+                OwnerRole = GroupManagerRoleExtensions.OwnerValue,
+                CoGmRole = GroupManagerRoleExtensions.CoGmValue
+            },
+            transaction);
+
+        await transaction.CommitAsync();
+    }
+
+    public async Task RemoveGroupCoGmAsync(Guid groupId, long coGmTelegramId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        await conn.ExecuteAsync(
+            """
+            DELETE FROM group_managers gm
+            USING players p
+            WHERE gm.player_id = p.id
+              AND gm.group_id = @GroupId
+              AND p.telegram_id = @CoGmTelegramId
+              AND gm.role = @CoGmRole
+            """,
+            new
+            {
+                GroupId = groupId,
+                CoGmTelegramId = coGmTelegramId,
+                CoGmRole = GroupManagerRoleExtensions.CoGmValue
+            });
     }
 
     public async Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId)
@@ -588,6 +754,213 @@ public sealed class SessionService(
             sourceSessions[0].NotificationMode);
     }
 
+    public async Task<List<WebCampaignTemplate>> GetCampaignTemplatesAsync(Guid groupId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return (await conn.QueryAsync<WebCampaignTemplate>(
+            """
+            SELECT id AS Id,
+                   group_id AS GroupId,
+                   name AS Name,
+                   title AS Title,
+                   join_link AS JoinLink,
+                   session_count AS SessionCount,
+                   interval_days AS IntervalDays,
+                   max_players AS MaxPlayers,
+                   notification_mode AS NotificationMode,
+                   created_at AS CreatedAt,
+                   updated_at AS UpdatedAt
+            FROM campaign_templates
+            WHERE group_id = @GroupId
+            ORDER BY created_at DESC, name
+            """,
+            new { GroupId = groupId })).ToList();
+    }
+
+    public async Task<WebCampaignTemplate?> GetCampaignTemplateAsync(Guid templateId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return await conn.QuerySingleOrDefaultAsync<WebCampaignTemplate>(
+            """
+            SELECT id AS Id,
+                   group_id AS GroupId,
+                   name AS Name,
+                   title AS Title,
+                   join_link AS JoinLink,
+                   session_count AS SessionCount,
+                   interval_days AS IntervalDays,
+                   max_players AS MaxPlayers,
+                   notification_mode AS NotificationMode,
+                   created_at AS CreatedAt,
+                   updated_at AS UpdatedAt
+            FROM campaign_templates
+            WHERE id = @TemplateId
+            """,
+            new { TemplateId = templateId });
+    }
+
+    public async Task<WebCampaignTemplate> CreateCampaignTemplateAsync(Guid groupId, CreateCampaignTemplateRequest request)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return await conn.QuerySingleAsync<WebCampaignTemplate>(
+            """
+            INSERT INTO campaign_templates (
+                group_id,
+                name,
+                title,
+                join_link,
+                session_count,
+                interval_days,
+                max_players,
+                notification_mode
+            )
+            VALUES (
+                @GroupId,
+                @Name,
+                @Title,
+                @JoinLink,
+                @SessionCount,
+                @IntervalDays,
+                @MaxPlayers,
+                @NotificationMode
+            )
+            ON CONFLICT (group_id, name) DO UPDATE
+            SET title = EXCLUDED.title,
+                join_link = EXCLUDED.join_link,
+                session_count = EXCLUDED.session_count,
+                interval_days = EXCLUDED.interval_days,
+                max_players = EXCLUDED.max_players,
+                notification_mode = EXCLUDED.notification_mode,
+                updated_at = now()
+            RETURNING id AS Id,
+                      group_id AS GroupId,
+                      name AS Name,
+                      title AS Title,
+                      join_link AS JoinLink,
+                      session_count AS SessionCount,
+                      interval_days AS IntervalDays,
+                      max_players AS MaxPlayers,
+                      notification_mode AS NotificationMode,
+                      created_at AS CreatedAt,
+                      updated_at AS UpdatedAt
+            """,
+            new
+            {
+                GroupId = groupId,
+                request.Name,
+                request.Title,
+                request.JoinLink,
+                request.SessionCount,
+                request.IntervalDays,
+                request.MaxPlayers,
+                NotificationMode = request.NotificationMode.ToDatabaseValue()
+            });
+    }
+
+    public async Task DeleteCampaignTemplateAsync(Guid templateId, Guid groupId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        await conn.ExecuteAsync(
+            "DELETE FROM campaign_templates WHERE id = @TemplateId AND group_id = @GroupId",
+            new { TemplateId = templateId, GroupId = groupId });
+    }
+
+    public async Task<WebSessionBatch> CreateBatchFromTemplateAsync(Guid templateId, Guid groupId, DateTime firstScheduledAt)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        await using var transaction = await conn.BeginTransactionAsync();
+
+        var template = await conn.QuerySingleOrDefaultAsync<WebCampaignTemplate>(
+            """
+            SELECT id AS Id,
+                   group_id AS GroupId,
+                   name AS Name,
+                   title AS Title,
+                   join_link AS JoinLink,
+                   session_count AS SessionCount,
+                   interval_days AS IntervalDays,
+                   max_players AS MaxPlayers,
+                   notification_mode AS NotificationMode,
+                   created_at AS CreatedAt,
+                   updated_at AS UpdatedAt
+            FROM campaign_templates
+            WHERE id = @TemplateId
+              AND group_id = @GroupId
+            FOR UPDATE
+            """,
+            new { TemplateId = templateId, GroupId = groupId },
+            transaction);
+
+        if (template is null)
+        {
+            throw new SessionAccessDeniedException(templateId, 0);
+        }
+
+        var group = await conn.QuerySingleOrDefaultAsync<WebTemplateGroupDto>(
+            "SELECT telegram_chat_id AS TelegramChatId FROM game_groups WHERE id = @GroupId",
+            new { GroupId = groupId },
+            transaction);
+
+        if (group is null)
+        {
+            throw new SessionAccessDeniedException(groupId, 0);
+        }
+
+        var schedule = BatchSchedulePlanner.BuildRecurringSchedule(
+            firstScheduledAt,
+            template.SessionCount,
+            template.IntervalDays);
+        var batchId = Guid.NewGuid();
+        var renderedSessions = new List<SessionBatchDto>();
+
+        foreach (var scheduledAt in schedule)
+        {
+            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)
+                RETURNING id
+                """,
+                new
+                {
+                    BatchId = batchId,
+                    GroupId = groupId,
+                    template.Title,
+                    template.JoinLink,
+                    ScheduledAt = scheduledAt,
+                    Status = SessionStatus.Planned,
+                    template.MaxPlayers,
+                    template.NotificationMode
+                },
+                transaction);
+
+            renderedSessions.Add(new SessionBatchDto(sessionId, scheduledAt, SessionStatus.Planned, template.MaxPlayers));
+        }
+
+        await transaction.CommitAsync();
+
+        var renderResult = SessionBatchRenderer.Render(template.Title, renderedSessions, Array.Empty<ParticipantBatchDto>());
+        var batchMessage = await bot.SendMessage(
+            chatId: group.TelegramChatId,
+            text: renderResult.Text,
+            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
+            replyMarkup: renderResult.Markup);
+
+        await conn.ExecuteAsync(
+            "UPDATE sessions SET batch_message_id = @MessageId WHERE batch_id = @BatchId",
+            new { MessageId = batchMessage.MessageId, BatchId = batchId });
+
+        return new WebSessionBatch(
+            batchId,
+            groupId,
+            template.Title,
+            template.JoinLink,
+            renderedSessions.Min(session => session.ScheduledAt),
+            renderedSessions.Max(session => session.ScheduledAt),
+            renderedSessions.Count,
+            template.NotificationMode);
+    }
+
     private async Task<List<WebDirectNotificationRecipient>> LoadSessionDirectRecipientsAsync(
         Npgsql.NpgsqlConnection conn,
         Guid sessionId)

src/GmRelay.Web/Services/TelegramAuthService.cs

@@ -1,5 +1,7 @@
 using System.Security.Cryptography;
 using System.Text;
+using System.Text.Json;
+using Microsoft.AspNetCore.WebUtilities;
 
 namespace GmRelay.Web.Services;
 
@@ -55,4 +57,98 @@ public sealed class TelegramAuthService(IConfiguration configuration)
 
         return false;
     }
+
+    public bool VerifyWebAppInitData(string initData, out long telegramId, out string name)
+    {
+        telegramId = 0;
+        name = string.Empty;
+
+        if (string.IsNullOrWhiteSpace(initData))
+            return false;
+
+        var token = configuration["Telegram__BotToken"] ?? configuration["Telegram:BotToken"];
+        if (string.IsNullOrEmpty(token))
+            return false;
+
+        var values = QueryHelpers.ParseQuery(initData);
+        if (!values.TryGetValue("hash", out var hash) || string.IsNullOrWhiteSpace(hash))
+            return false;
+
+        var dataCheckString = string.Join(
+            "\n",
+            values
+                .Where(pair => pair.Key != "hash")
+                .OrderBy(pair => pair.Key, StringComparer.Ordinal)
+                .Select(pair => $"{pair.Key}={pair.Value}"));
+
+        var secretKey = HMACSHA256.HashData(Encoding.UTF8.GetBytes("WebAppData"), Encoding.UTF8.GetBytes(token));
+        var computedHashBytes = HMACSHA256.HashData(secretKey, Encoding.UTF8.GetBytes(dataCheckString));
+
+        byte[] hashBytes;
+        try
+        {
+            hashBytes = Convert.FromHexString(hash.ToString());
+        }
+        catch (FormatException)
+        {
+            return false;
+        }
+
+        if (!CryptographicOperations.FixedTimeEquals(computedHashBytes, hashBytes))
+            return false;
+
+        if (!values.TryGetValue("auth_date", out var authDateStr) ||
+            !long.TryParse(authDateStr, out var authDate))
+        {
+            return false;
+        }
+
+        var now = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
+        if (now - authDate > 86400)
+            return false;
+
+        if (!values.TryGetValue("user", out var userJson) || string.IsNullOrWhiteSpace(userJson))
+            return false;
+
+        return TryReadWebAppUser(userJson.ToString(), out telegramId, out name);
+    }
+
+    private static bool TryReadWebAppUser(string userJson, out long telegramId, out string name)
+    {
+        telegramId = 0;
+        name = string.Empty;
+
+        try
+        {
+            using var document = JsonDocument.Parse(userJson);
+            var root = document.RootElement;
+
+            if (!root.TryGetProperty("id", out var idElement) || !idElement.TryGetInt64(out telegramId))
+                return false;
+
+            var firstName = root.TryGetProperty("first_name", out var firstNameElement)
+                ? firstNameElement.GetString() ?? string.Empty
+                : string.Empty;
+            var lastName = root.TryGetProperty("last_name", out var lastNameElement)
+                ? lastNameElement.GetString() ?? string.Empty
+                : string.Empty;
+            var username = root.TryGetProperty("username", out var usernameElement)
+                ? usernameElement.GetString()
+                : null;
+
+            name = (firstName, lastName) switch
+            {
+                ({ Length: > 0 }, { Length: > 0 }) => $"{firstName} {lastName}",
+                ({ Length: > 0 }, _) => firstName,
+                _ when !string.IsNullOrWhiteSpace(username) => "@" + username,
+                _ => $"Telegram {telegramId.ToString(System.Globalization.CultureInfo.InvariantCulture)}"
+            };
+
+            return true;
+        }
+        catch (JsonException)
+        {
+            return false;
+        }
+    }
 }

src/GmRelay.Web/wwwroot/app.css

@@ -1,5 +1,5 @@
 /* ============================================
-   GM-Relay Design System v1.5.0
+   GM-Relay Design System v1.9.0
    Dark RPG Dashboard Theme
    ============================================ */
 
@@ -618,6 +618,78 @@ select option {
     white-space: nowrap;
 }
 
+/* === Campaign templates === */
+.campaign-template-panel {
+    margin-bottom: 1.5rem;
+}
+
+.campaign-template-fields {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 0.75rem;
+}
+
+.campaign-template-list {
+    margin-top: 1rem;
+    border-top: 1px solid var(--border-color);
+}
+
+.campaign-template-row {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) minmax(360px, auto);
+    gap: 1rem;
+    align-items: center;
+    padding: 1rem 0;
+    border-bottom: 1px solid var(--border-color);
+}
+
+.campaign-template-row:last-child {
+    border-bottom: none;
+    padding-bottom: 0;
+}
+
+.campaign-template-info h3 {
+    font-size: 0.9375rem;
+    margin-bottom: 0.25rem;
+    overflow-wrap: anywhere;
+}
+
+.campaign-template-info p {
+    margin: 0;
+    color: var(--text-muted);
+    font-size: 0.8125rem;
+}
+
+.campaign-template-actions {
+    display: grid;
+    grid-template-columns: minmax(190px, 1fr) auto;
+    gap: 0.75rem;
+    align-items: center;
+}
+
+.template-group-selector {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) auto;
+    gap: 0.75rem;
+    align-items: center;
+}
+
+.template-management-row {
+    grid-template-columns: minmax(0, 1fr) auto;
+}
+
+.template-management-actions {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    flex-wrap: wrap;
+    justify-content: flex-end;
+}
+
+.empty-state-compact {
+    padding: 1.5rem 1rem;
+}
+
 /* === Animations === */
 @keyframes fadeIn {
     from { opacity: 0; transform: translateY(8px); }
@@ -770,6 +842,46 @@ select option {
     margin-bottom: 2rem;
 }
 
+/* === Telegram Mini App entry === */
+.mini-app-page {
+    min-height: 100vh;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 1rem;
+    background: var(--bg-primary);
+}
+
+.mini-app-auth-card {
+    width: 100%;
+    max-width: 360px;
+    padding: 1.5rem;
+    border: 1px solid var(--glass-border);
+    border-radius: var(--radius-md);
+    background: var(--glass-bg);
+    text-align: center;
+}
+
+.mini-app-logo {
+    font-size: 2.25rem;
+    margin-bottom: 0.75rem;
+}
+
+.mini-app-auth-card h1 {
+    font-size: 1.375rem;
+    margin-bottom: 0.5rem;
+}
+
+.mini-app-auth-card p {
+    color: var(--text-secondary);
+    font-size: 0.875rem;
+    margin-bottom: 1.25rem;
+}
+
+.telegram-mini-app .page-container {
+    max-width: 720px;
+}
+
 /* === Mobile Sessions Cards (instead of table) === */
 .session-card-mobile {
     display: none;
@@ -838,11 +950,16 @@ select option {
     }
 
     .batch-bulk-fields,
-    .batch-clone-row {
+    .batch-clone-row,
+    .campaign-template-fields,
+    .campaign-template-row,
+    .campaign-template-actions,
+    .template-group-selector {
         grid-template-columns: 1fr;
     }
 
-    .batch-clone-row .btn-gm {
+    .batch-clone-row .btn-gm,
+    .campaign-template-actions .btn-gm {
         justify-content: center;
         width: 100%;
     }
@@ -851,6 +968,14 @@ select option {
         padding: 1rem;
     }
 
+    .telegram-mini-app .content {
+        padding: 0.75rem;
+    }
+
+    .telegram-mini-app .page-container {
+        padding: 0.75rem;
+    }
+
     h2 {
         font-size: 1.25rem;
     }

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

@@ -33,6 +33,32 @@ public sealed class NewSessionCommandParserTests
         Assert.Empty(result.InvalidTimeInputs);
     }
 
+    [Fact]
+    public void Parse_ShouldExpandRecurringSchedule_WhenRepeatCountAndIntervalProvided()
+    {
+        var nowUtc = new DateTimeOffset(2026, 4, 23, 12, 0, 0, TimeSpan.Zero);
+        var text = """
+            /newsession
+            Название: Kingmaker
+            Время: 30.04.2026 19:30
+            Игр: 4
+            Интервал: 14
+            Ссылка: https://example.test/kingmaker
+            """;
+
+        var result = NewSessionCommandParser.Parse(text, nowUtc);
+
+        Assert.True(result.IsValid);
+        Assert.Equal(
+            [
+                new DateTimeOffset(2026, 4, 30, 16, 30, 0, TimeSpan.Zero),
+                new DateTimeOffset(2026, 5, 14, 16, 30, 0, TimeSpan.Zero),
+                new DateTimeOffset(2026, 5, 28, 16, 30, 0, TimeSpan.Zero),
+                new DateTimeOffset(2026, 6, 11, 16, 30, 0, TimeSpan.Zero)
+            ],
+            result.ScheduledTimes);
+    }
+
     [Fact]
     public void Parse_ShouldCollectPastAndInvalidTimes()
     {

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

@@ -5,28 +5,115 @@ namespace GmRelay.Bot.Tests.Features.Sessions.RescheduleSession;
 public sealed class HandleRescheduleTimeInputHandlerTests
 {
     [Fact]
-    public void BuildVotingMessage_ShouldShowApprovedAndPendingParticipants()
+    public void TryParseVotingInput_ShouldAcceptTwoOptionsAndDeadline()
     {
-        var approvedId = Guid.NewGuid();
+        var now = new DateTimeOffset(2026, 4, 24, 8, 0, 0, TimeSpan.Zero);
-        var pendingId = Guid.NewGuid();
+
+        var ok = RescheduleVotingInput.TryParse(
+            """
+            25.04.2026 19:30
+            26.04.2026 18:00
+            Дедлайн: 25.04.2026 12:00
+            """,
+            now,
+            out var input,
+            out var error);
+
+        Assert.True(ok, error);
+        Assert.Equal(2, input.Options.Count);
+        Assert.Equal(new DateTimeOffset(2026, 4, 25, 16, 30, 0, TimeSpan.Zero), input.Options[0]);
+        Assert.Equal(new DateTimeOffset(2026, 4, 26, 15, 0, 0, TimeSpan.Zero), input.Options[1]);
+        Assert.Equal(new DateTimeOffset(2026, 4, 25, 9, 0, 0, TimeSpan.Zero), input.Deadline);
+    }
+
+    [Fact]
+    public void TryParseVotingInput_ShouldRejectSingleOption()
+    {
+        var now = new DateTimeOffset(2026, 4, 24, 8, 0, 0, TimeSpan.Zero);
+
+        var ok = RescheduleVotingInput.TryParse(
+            """
+            25.04.2026 19:30
+            Дедлайн: 25.04.2026 12:00
+            """,
+            now,
+            out _,
+            out var error);
+
+        Assert.False(ok);
+        Assert.Equal("Укажите от 2 до 3 вариантов времени.", error);
+    }
+
+    [Fact]
+    public void BuildVotingMessage_ShouldShowOptionsDeadlineVotesAndPendingParticipants()
+    {
+        var firstOptionId = Guid.NewGuid();
+        var secondOptionId = Guid.NewGuid();
+        var aliceId = Guid.NewGuid();
+        var bobId = Guid.NewGuid();
+        var charlieId = Guid.NewGuid();
         var currentTime = new DateTime(2026, 4, 25, 16, 30, 0, DateTimeKind.Utc);
-        var newTime = new DateTimeOffset(2026, 4, 26, 17, 0, 0, TimeSpan.Zero);
+        var deadline = new DateTimeOffset(2026, 4, 25, 9, 0, 0, TimeSpan.Zero);
+        var options = new List<RescheduleOptionDto>
+        {
+            new(firstOptionId, 1, new DateTimeOffset(2026, 4, 26, 16, 0, 0, TimeSpan.Zero)),
+            new(secondOptionId, 2, new DateTimeOffset(2026, 4, 27, 17, 0, 0, TimeSpan.Zero))
+        };
         var participants = new List<VoteParticipantDto>
         {
-            new(approvedId, "Alice", "alice"),
+            new(aliceId, "Alice", "alice"),
-            new(pendingId, "Bob", null)
+            new(bobId, "Bob", null),
+            new(charlieId, "Charlie", null)
+        };
+        var votes = new List<RescheduleOptionVoteDto>
+        {
+            new(firstOptionId, aliceId, "Alice", "alice"),
+            new(secondOptionId, bobId, "Bob", null)
         };
 
         var text = HandleRescheduleTimeInputHandler.BuildVotingMessage(
             "Shadowrun",
             currentTime,
-            newTime,
+            deadline,
+            options,
             participants,
-            [approvedId]);
+            votes);
 
         Assert.Contains("Shadowrun", text);
-        Assert.Contains("✅ @alice", text);
+        Assert.Contains("Дедлайн: <b>25 апреля 2026, 12:00</b> (МСК)", text);
-        Assert.Contains("⏳ Bob", text);
+        Assert.Contains("1. <b>26 апреля 2026, 19:00</b> (МСК) — 1 голос", text);
-        Assert.Contains("Голоса: 1/2 ✅", text);
+        Assert.Contains("@alice", text);
+        Assert.Contains("2. <b>27 апреля 2026, 20:00</b> (МСК) — 1 голос", text);
+        Assert.Contains("Bob", text);
+        Assert.Contains("Не проголосовали: Charlie", text);
+        Assert.Contains("Голосов: 2/3", text);
+    }
+
+    [Fact]
+    public void BuildVotingKeyboard_ShouldCreateOneButtonPerOption()
+    {
+        var firstOptionId = Guid.NewGuid();
+        var secondOptionId = Guid.NewGuid();
+        var options = new List<RescheduleOptionDto>
+        {
+            new(firstOptionId, 1, new DateTimeOffset(2026, 4, 26, 16, 0, 0, TimeSpan.Zero)),
+            new(secondOptionId, 2, new DateTimeOffset(2026, 4, 27, 17, 0, 0, TimeSpan.Zero))
+        };
+
+        var keyboard = HandleRescheduleTimeInputHandler.BuildVotingKeyboard(options);
+        var buttons = keyboard.InlineKeyboard.SelectMany(row => row).ToList();
+
+        Assert.Collection(
+            buttons,
+            button =>
+            {
+                Assert.Equal("1. 26.04 19:00", button.Text);
+                Assert.Equal($"reschedule_vote:{firstOptionId}", button.CallbackData);
+            },
+            button =>
+            {
+                Assert.Equal("2. 27.04 20:00", button.Text);
+                Assert.Equal($"reschedule_vote:{secondOptionId}", button.CallbackData);
+            });
     }
 }

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

@@ -5,32 +5,50 @@ namespace GmRelay.Bot.Tests.Features.Sessions.RescheduleSession;
 public sealed class RescheduleVoteRulesTests
 {
     [Fact]
-    public void Evaluate_ShouldReject_WhenParticipantVotesNo()
+    public void SelectWinner_ShouldApproveSingleTopOption()
     {
-        var decision = RescheduleVoteRules.Evaluate("no", totalParticipants: 4, approvedParticipants: 3);
+        var winningOptionId = Guid.NewGuid();
+        var otherOptionId = Guid.NewGuid();
 
-        Assert.Equal(RescheduleVoteOutcome.Rejected, decision.Outcome);
+        var decision = RescheduleVoteRules.SelectWinner(
-        Assert.False(decision.ShouldRescheduleSession);
+            [
-        Assert.Equal("Вы проголосовали против переноса.", decision.CallbackText);
+                new RescheduleOptionVoteCount(winningOptionId, 3),
-    }
+                new RescheduleOptionVoteCount(otherOptionId, 1)
-
+            ]);
-    [Fact]
-    public void Evaluate_ShouldApprove_WhenEveryoneVotedYes()
-    {
-        var decision = RescheduleVoteRules.Evaluate("yes", totalParticipants: 3, approvedParticipants: 3);
 
         Assert.Equal(RescheduleVoteOutcome.Approved, decision.Outcome);
-        Assert.True(decision.ShouldRescheduleSession);
+        Assert.Equal(winningOptionId, decision.SelectedOptionId);
-        Assert.True(decision.ShouldResetParticipantRsvps);
+        Assert.Equal("Победил вариант с большинством голосов.", decision.Reason);
     }
 
     [Fact]
-    public void Evaluate_ShouldStayPending_WhileVotesOutstanding()
+    public void SelectWinner_ShouldRejectTie()
     {
-        var decision = RescheduleVoteRules.Evaluate("yes", totalParticipants: 5, approvedParticipants: 2);
+        var firstOptionId = Guid.NewGuid();
+        var secondOptionId = Guid.NewGuid();
 
-        Assert.Equal(RescheduleVoteOutcome.Pending, decision.Outcome);
+        var decision = RescheduleVoteRules.SelectWinner(
-        Assert.False(decision.ShouldRescheduleSession);
+            [
-        Assert.False(decision.ShouldResetParticipantRsvps);
+                new RescheduleOptionVoteCount(firstOptionId, 2),
+                new RescheduleOptionVoteCount(secondOptionId, 2)
+            ]);
+
+        Assert.Equal(RescheduleVoteOutcome.Rejected, decision.Outcome);
+        Assert.Null(decision.SelectedOptionId);
+        Assert.Equal("Голоса разделились поровну, перенос не применяется.", decision.Reason);
+    }
+
+    [Fact]
+    public void SelectWinner_ShouldRejectWhenNobodyVoted()
+    {
+        var decision = RescheduleVoteRules.SelectWinner(
+            [
+                new RescheduleOptionVoteCount(Guid.NewGuid(), 0),
+                new RescheduleOptionVoteCount(Guid.NewGuid(), 0)
+            ]);
+
+        Assert.Equal(RescheduleVoteOutcome.Rejected, decision.Outcome);
+        Assert.Null(decision.SelectedOptionId);
+        Assert.Equal("Никто не проголосовал до дедлайна, перенос не применяется.", decision.Reason);
     }
 }

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

@@ -0,0 +1,50 @@
+namespace GmRelay.Bot.Tests.Infrastructure.Telegram;
+
+public sealed class TelegramMiniAppEntryPointTests
+{
+    [Fact]
+    public async Task UpdateRouter_ShouldExposeMiniAppButtonInStartCommand()
+    {
+        var updateRouter = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs"));
+
+        Assert.Contains("Telegram:MiniAppUrl", updateRouter, StringComparison.Ordinal);
+        Assert.Contains("InlineKeyboardButton.WithWebApp", updateRouter, StringComparison.Ordinal);
+        Assert.Contains("Открыть dashboard", updateRouter, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task BotStartup_ShouldRegisterMiniAppMenuButtonService()
+    {
+        var program = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Bot/Program.cs"));
+
+        Assert.Contains("TelegramMiniAppMenuButtonService", program, StringComparison.Ordinal);
+        Assert.Contains("AddHostedService<TelegramMiniAppMenuButtonService>", program, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task MiniAppMenuButtonService_ShouldSetTelegramWebAppMenuButtonWhenConfigured()
+    {
+        var service = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Bot/Infrastructure/Telegram/TelegramMiniAppMenuButtonService.cs"));
+
+        Assert.Contains("SetChatMenuButton", service, StringComparison.Ordinal);
+        Assert.Contains("MenuButtonWebApp", service, StringComparison.Ordinal);
+        Assert.Contains("Telegram:MiniAppUrl", service, StringComparison.Ordinal);
+    }
+
+    private static string FindRepositoryFile(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 candidate;
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}

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

@@ -28,6 +28,34 @@ public sealed class AuthorizedSessionServiceTests
         Assert.Equal("Session A", sessions[0].Title);
     }
 
+    [Fact]
+    public async Task GetUpcomingSessionsForGmAsync_ReturnsSessions_WhenUserIsCoGm()
+    {
+        var ownerId = 1001L;
+        var coGmId = 2002L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", ownerId)
+            ],
+            sessions:
+            [
+                new(Guid.NewGuid(), groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42, 4, 1, 0)
+            ],
+            managers:
+            [
+                new(groupId, coGmId, GroupManagerRole.CoGm)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var sessions = await service.GetUpcomingSessionsForGmAsync(groupId, coGmId);
+
+        Assert.NotNull(sessions);
+        Assert.Single(sessions);
+        Assert.Equal("Session A", sessions[0].Title);
+    }
+
     [Fact]
     public async Task GetUpcomingSessionsForGmAsync_ReturnsNull_WhenGroupBelongsToAnotherGm()
     {
@@ -211,6 +239,105 @@ public sealed class AuthorizedSessionServiceTests
         Assert.Equal("https://example.test/b", store.LastUpdatedBatchJoinLink);
     }
 
+    [Fact]
+    public async Task UpdateBatchDetailsForGmAsync_UpdatesBatch_WhenUserIsCoGm()
+    {
+        var ownerId = 1001L;
+        var coGmId = 2002L;
+        var groupId = Guid.NewGuid();
+        var batchId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", ownerId)
+            ],
+            sessions:
+            [
+                new(Guid.NewGuid(), groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", batchId, 10, 42, 4, 1, 0)
+            ],
+            managers:
+            [
+                new(groupId, coGmId, GroupManagerRole.CoGm)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.UpdateBatchDetailsForGmAsync(batchId, coGmId, "Updated", "https://example.test/b");
+
+        Assert.True(store.UpdateBatchDetailsCalled);
+        Assert.Equal(batchId, store.LastUpdatedBatchId);
+        Assert.Equal(groupId, store.LastUpdatedBatchGroupId);
+    }
+
+    [Fact]
+    public async Task AddCoGmForOwnerAsync_AddsCoGm_WhenUserIsOwner()
+    {
+        var ownerId = 1001L;
+        var coGmId = 2002L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", ownerId)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.AddCoGmForOwnerAsync(groupId, ownerId, coGmId, "Assistant GM", "assistant");
+
+        Assert.True(store.AddCoGmCalled);
+        Assert.Equal(groupId, store.LastAddedCoGmGroupId);
+        Assert.Equal(coGmId, store.LastAddedCoGmTelegramId);
+        Assert.Equal("Assistant GM", store.LastAddedCoGmDisplayName);
+        Assert.Equal("assistant", store.LastAddedCoGmUsername);
+    }
+
+    [Fact]
+    public async Task AddCoGmForOwnerAsync_Throws_WhenUserIsCoGm()
+    {
+        var ownerId = 1001L;
+        var coGmId = 2002L;
+        var newCoGmId = 3003L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", ownerId)
+            ],
+            managers:
+            [
+                new(groupId, coGmId, GroupManagerRole.CoGm)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var action = () => service.AddCoGmForOwnerAsync(groupId, coGmId, newCoGmId, "Second Assistant", null);
+
+        await Assert.ThrowsAsync<SessionAccessDeniedException>(action);
+        Assert.False(store.AddCoGmCalled);
+    }
+
+    [Fact]
+    public async Task RemoveCoGmForOwnerAsync_RemovesCoGm_WhenUserIsOwner()
+    {
+        var ownerId = 1001L;
+        var coGmId = 2002L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", ownerId)
+            ],
+            managers:
+            [
+                new(groupId, coGmId, GroupManagerRole.CoGm)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.RemoveCoGmForOwnerAsync(groupId, ownerId, coGmId);
+
+        Assert.True(store.RemoveCoGmCalled);
+        Assert.Equal(groupId, store.LastRemovedCoGmGroupId);
+        Assert.Equal(coGmId, store.LastRemovedCoGmTelegramId);
+    }
+
     [Fact]
     public async Task UpdateBatchNotificationModeForGmAsync_Throws_WhenBatchBelongsToAnotherGm()
     {
@@ -333,12 +460,154 @@ public sealed class AuthorizedSessionServiceTests
         Assert.Equal(BatchCloneInterval.NextWeek, store.LastCloneInterval);
     }
 
+    [Fact]
+    public async Task CreateCampaignTemplateForGmAsync_CreatesTemplate_WhenGroupBelongsToGm()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", gmId)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.CreateCampaignTemplateForGmAsync(
+            groupId,
+            gmId,
+            new CreateCampaignTemplateRequest(
+                "  Weekly arc  ",
+                "  Kingmaker  ",
+                "  https://example.test/kingmaker  ",
+                SessionCount: 6,
+                IntervalDays: 7,
+                MaxPlayers: 5,
+                SessionNotificationMode.GroupOnly));
+
+        Assert.True(store.CreateCampaignTemplateCalled);
+        Assert.Equal(groupId, store.LastCreatedCampaignTemplateGroupId);
+        Assert.Equal("Weekly arc", store.LastCreatedCampaignTemplateRequest?.Name);
+        Assert.Equal("Kingmaker", store.LastCreatedCampaignTemplateRequest?.Title);
+        Assert.Equal("https://example.test/kingmaker", store.LastCreatedCampaignTemplateRequest?.JoinLink);
+        Assert.Equal(6, store.LastCreatedCampaignTemplateRequest?.SessionCount);
+        Assert.Equal(7, store.LastCreatedCampaignTemplateRequest?.IntervalDays);
+        Assert.Equal(5, store.LastCreatedCampaignTemplateRequest?.MaxPlayers);
+        Assert.Equal(SessionNotificationMode.GroupOnly, store.LastCreatedCampaignTemplateRequest?.NotificationMode);
+    }
+
+    [Fact]
+    public async Task CreateCampaignTemplateForGmAsync_AllowsNoSeatLimit()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", gmId)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.CreateCampaignTemplateForGmAsync(
+            groupId,
+            gmId,
+            new CreateCampaignTemplateRequest(
+                "Open table",
+                "West Marches",
+                "https://example.test/west",
+                8,
+                7,
+                null,
+                SessionNotificationMode.GroupAndDirect));
+
+        Assert.True(store.CreateCampaignTemplateCalled);
+        Assert.Null(store.LastCreatedCampaignTemplateRequest?.MaxPlayers);
+    }
+
+    [Fact]
+    public async Task CreateCampaignTemplateForGmAsync_Throws_WhenGroupBelongsToAnotherGm()
+    {
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", 2002L)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var action = () => service.CreateCampaignTemplateForGmAsync(
+            groupId,
+            1001L,
+            new CreateCampaignTemplateRequest(
+                "Weekly arc",
+                "Kingmaker",
+                "https://example.test/kingmaker",
+                SessionCount: 6,
+                IntervalDays: 7,
+                MaxPlayers: 5,
+                SessionNotificationMode.GroupOnly));
+
+        await Assert.ThrowsAsync<SessionAccessDeniedException>(action);
+        Assert.False(store.CreateCampaignTemplateCalled);
+    }
+
+    [Fact]
+    public async Task CreateBatchFromCampaignTemplateForGmAsync_CreatesBatch_WhenTemplateGroupBelongsToGm()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var templateId = Guid.NewGuid();
+        var firstScheduledAt = DateTime.UtcNow.AddDays(3);
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", gmId)
+            ],
+            templates:
+            [
+                new(templateId, groupId, "Weekly arc", "Kingmaker", "https://example.test/kingmaker", 6, 7, 5, SessionNotificationModeExtensions.GroupOnlyValue, DateTime.UtcNow, DateTime.UtcNow)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.CreateBatchFromCampaignTemplateForGmAsync(templateId, gmId, firstScheduledAt);
+
+        Assert.True(store.CreateBatchFromTemplateCalled);
+        Assert.Equal(templateId, store.LastCreatedBatchTemplateId);
+        Assert.Equal(groupId, store.LastCreatedBatchTemplateGroupId);
+        Assert.Equal(firstScheduledAt, store.LastCreatedBatchFirstScheduledAt);
+    }
+
+    [Fact]
+    public async Task CreateBatchFromCampaignTemplateForGmAsync_Throws_WhenTemplateGroupBelongsToAnotherGm()
+    {
+        var groupId = Guid.NewGuid();
+        var templateId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", 2002L)
+            ],
+            templates:
+            [
+                new(templateId, groupId, "Weekly arc", "Kingmaker", "https://example.test/kingmaker", 6, 7, 5, SessionNotificationModeExtensions.GroupOnlyValue, DateTime.UtcNow, DateTime.UtcNow)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var action = () => service.CreateBatchFromCampaignTemplateForGmAsync(templateId, 1001L, DateTime.UtcNow.AddDays(3));
+
+        await Assert.ThrowsAsync<SessionAccessDeniedException>(action);
+        Assert.False(store.CreateBatchFromTemplateCalled);
+    }
+
     private sealed class FakeSessionStore(
         IEnumerable<WebGameGroup>? groups = null,
-        IEnumerable<WebSession>? sessions = null) : ISessionStore
+        IEnumerable<WebSession>? sessions = null,
+        IEnumerable<FakeGroupManager>? managers = null,
+        IEnumerable<WebCampaignTemplate>? templates = null) : ISessionStore
     {
         private readonly Dictionary<Guid, WebGameGroup> groupsById = groups?.ToDictionary(group => group.Id) ?? [];
         private readonly Dictionary<Guid, WebSession> sessionsById = sessions?.ToDictionary(session => session.Id) ?? [];
+        private readonly Dictionary<Guid, WebCampaignTemplate> templatesById = templates?.ToDictionary(template => template.Id) ?? [];
+        private readonly List<FakeGroupManager> managers = managers?.ToList() ?? [];
 
         public bool UpdateCalled { get; private set; }
         public bool PromoteCalled { get; private set; }
@@ -346,6 +615,11 @@ public sealed class AuthorizedSessionServiceTests
         public bool UpdateBatchNotificationModeCalled { get; private set; }
         public bool RescheduleBatchCalled { get; private set; }
         public bool CloneBatchCalled { get; private set; }
+        public bool CreateCampaignTemplateCalled { get; private set; }
+        public bool DeleteCampaignTemplateCalled { get; private set; }
+        public bool CreateBatchFromTemplateCalled { get; private set; }
+        public bool AddCoGmCalled { get; private set; }
+        public bool RemoveCoGmCalled { get; private set; }
         public Guid? LastUpdatedSessionId { get; private set; }
         public Guid? LastUpdatedGroupId { get; private set; }
         public string? LastUpdatedTitle { get; private set; }
@@ -368,9 +642,22 @@ public sealed class AuthorizedSessionServiceTests
         public Guid? LastClonedBatchId { get; private set; }
         public Guid? LastClonedBatchGroupId { get; private set; }
         public BatchCloneInterval? LastCloneInterval { get; private set; }
+        public Guid? LastCreatedCampaignTemplateGroupId { get; private set; }
+        public CreateCampaignTemplateRequest? LastCreatedCampaignTemplateRequest { get; private set; }
+        public Guid? LastDeletedCampaignTemplateId { get; private set; }
+        public Guid? LastDeletedCampaignTemplateGroupId { get; private set; }
+        public Guid? LastCreatedBatchTemplateId { get; private set; }
+        public Guid? LastCreatedBatchTemplateGroupId { get; private set; }
+        public DateTime? LastCreatedBatchFirstScheduledAt { get; private set; }
+        public Guid? LastAddedCoGmGroupId { get; private set; }
+        public long? LastAddedCoGmTelegramId { get; private set; }
+        public string? LastAddedCoGmDisplayName { get; private set; }
+        public string? LastAddedCoGmUsername { get; private set; }
+        public Guid? LastRemovedCoGmGroupId { get; private set; }
+        public long? LastRemovedCoGmTelegramId { get; private set; }
 
         public Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId) =>
-            Task.FromResult(groupsById.Values.Where(group => group.GmTelegramId == gmId).ToList());
+            Task.FromResult(groupsById.Values.Where(group => IsManager(group.Id, gmId)).ToList());
 
         public Task<WebGameGroup?> GetGroupAsync(Guid groupId)
         {
@@ -378,6 +665,36 @@ public sealed class AuthorizedSessionServiceTests
             return Task.FromResult(group);
         }
 
+        public Task<bool> IsGroupManagerAsync(Guid groupId, long telegramId) =>
+            Task.FromResult(IsManager(groupId, telegramId));
+
+        public Task<bool> IsGroupOwnerAsync(Guid groupId, long telegramId) =>
+            Task.FromResult(IsOwner(groupId, telegramId));
+
+        public Task<List<WebGroupManager>> GetGroupManagersAsync(Guid groupId)
+        {
+            if (!groupsById.TryGetValue(groupId, out var group))
+            {
+                return Task.FromResult(new List<WebGroupManager>());
+            }
+
+            var result = new List<WebGroupManager>
+            {
+                new(group.GmTelegramId, "Owner GM", null, GroupManagerRoleExtensions.OwnerValue, DateTime.UtcNow)
+            };
+
+            result.AddRange(managers
+                .Where(manager => manager.GroupId == groupId)
+                .Select(manager => new WebGroupManager(
+                    manager.TelegramId,
+                    $"Co-GM {manager.TelegramId}",
+                    null,
+                    manager.Role.ToDatabaseValue(),
+                    DateTime.UtcNow)));
+
+            return Task.FromResult(result);
+        }
+
         public Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId) =>
             Task.FromResult(sessionsById.Values.Where(session => session.GroupId == groupId).ToList());
 
@@ -474,5 +791,92 @@ public sealed class AuthorizedSessionServiceTests
                 DateTime.UtcNow.AddDays(7),
                 1));
         }
+
+        public Task<List<WebCampaignTemplate>> GetCampaignTemplatesAsync(Guid groupId) =>
+            Task.FromResult(templatesById.Values.Where(template => template.GroupId == groupId).ToList());
+
+        public Task<WebCampaignTemplate?> GetCampaignTemplateAsync(Guid templateId)
+        {
+            templatesById.TryGetValue(templateId, out var template);
+            return Task.FromResult(template);
         }
+
+        public Task<WebCampaignTemplate> CreateCampaignTemplateAsync(Guid groupId, CreateCampaignTemplateRequest request)
+        {
+            CreateCampaignTemplateCalled = true;
+            LastCreatedCampaignTemplateGroupId = groupId;
+            LastCreatedCampaignTemplateRequest = request;
+
+            var template = new WebCampaignTemplate(
+                Guid.NewGuid(),
+                groupId,
+                request.Name,
+                request.Title,
+                request.JoinLink,
+                request.SessionCount,
+                request.IntervalDays,
+                request.MaxPlayers,
+                request.NotificationMode.ToDatabaseValue(),
+                DateTime.UtcNow,
+                DateTime.UtcNow);
+
+            templatesById[template.Id] = template;
+            return Task.FromResult(template);
+        }
+
+        public Task DeleteCampaignTemplateAsync(Guid templateId, Guid groupId)
+        {
+            DeleteCampaignTemplateCalled = true;
+            LastDeletedCampaignTemplateId = templateId;
+            LastDeletedCampaignTemplateGroupId = groupId;
+            templatesById.Remove(templateId);
+            return Task.CompletedTask;
+        }
+
+        public Task<WebSessionBatch> CreateBatchFromTemplateAsync(Guid templateId, Guid groupId, DateTime firstScheduledAt)
+        {
+            CreateBatchFromTemplateCalled = true;
+            LastCreatedBatchTemplateId = templateId;
+            LastCreatedBatchTemplateGroupId = groupId;
+            LastCreatedBatchFirstScheduledAt = firstScheduledAt;
+
+            var template = templatesById[templateId];
+            return Task.FromResult(new WebSessionBatch(
+                Guid.NewGuid(),
+                groupId,
+                template.Title,
+                template.JoinLink,
+                firstScheduledAt,
+                firstScheduledAt.AddDays(template.IntervalDays * (template.SessionCount - 1)),
+                template.SessionCount,
+                template.NotificationMode));
+        }
+
+        public Task AddGroupCoGmAsync(Guid groupId, long ownerTelegramId, long coGmTelegramId, string displayName, string? telegramUsername)
+        {
+            AddCoGmCalled = true;
+            LastAddedCoGmGroupId = groupId;
+            LastAddedCoGmTelegramId = coGmTelegramId;
+            LastAddedCoGmDisplayName = displayName;
+            LastAddedCoGmUsername = telegramUsername;
+            return Task.CompletedTask;
+        }
+
+        public Task RemoveGroupCoGmAsync(Guid groupId, long coGmTelegramId)
+        {
+            RemoveCoGmCalled = true;
+            LastRemovedCoGmGroupId = groupId;
+            LastRemovedCoGmTelegramId = coGmTelegramId;
+            return Task.CompletedTask;
+        }
+
+        private bool IsManager(Guid groupId, long telegramId) =>
+            IsOwner(groupId, telegramId) ||
+            managers.Any(manager => manager.GroupId == groupId && manager.TelegramId == telegramId);
+
+        private bool IsOwner(Guid groupId, long telegramId) =>
+            groupsById.TryGetValue(groupId, out var group) && group.GmTelegramId == telegramId;
+    }
+
+    private sealed record FakeGroupManager(Guid GroupId, long TelegramId, GroupManagerRole Role);
 }

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

@@ -37,6 +37,35 @@ public sealed class BatchSchedulePlannerTests
         Assert.Throws<ArgumentOutOfRangeException>(action);
     }
 
+    [Fact]
+    public void BuildRecurringSchedule_CreatesFixedIntervalScheduleFromFirstDate()
+    {
+        var firstScheduledAt = new DateTime(2026, 5, 4, 16, 0, 0, DateTimeKind.Utc);
+
+        var result = BatchSchedulePlanner.BuildRecurringSchedule(firstScheduledAt, sessionCount: 3, intervalDays: 14);
+
+        Assert.Equal(
+            [
+                firstScheduledAt,
+                firstScheduledAt.AddDays(14),
+                firstScheduledAt.AddDays(28)
+            ],
+            result);
+    }
+
+    [Theory]
+    [InlineData(0, 7)]
+    [InlineData(53, 7)]
+    [InlineData(3, 0)]
+    public void BuildRecurringSchedule_RejectsInvalidTemplateShape(int sessionCount, int intervalDays)
+    {
+        var firstScheduledAt = new DateTime(2026, 5, 4, 16, 0, 0, DateTimeKind.Utc);
+
+        var action = () => BatchSchedulePlanner.BuildRecurringSchedule(firstScheduledAt, sessionCount, intervalDays);
+
+        Assert.Throws<ArgumentOutOfRangeException>(action);
+    }
+
     [Theory]
     [InlineData(BatchCloneInterval.NextWeek, 2026, 5, 8)]
     [InlineData(BatchCloneInterval.NextMonth, 2026, 6, 1)]

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

@@ -0,0 +1,64 @@
+namespace GmRelay.Bot.Tests.Web;
+
+public sealed class CampaignTemplatesNavigationTests
+{
+    [Fact]
+    public async Task NavMenu_ShouldExposeTemplatesTab()
+    {
+        var navMenu = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/Components/Layout/NavMenu.razor"));
+
+        Assert.Contains("href=\"templates\"", navMenu, StringComparison.Ordinal);
+        Assert.Contains("Шаблоны", navMenu, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task NavMenuStyles_ShouldStyleNavLinkAnchorsAsStackedRows()
+    {
+        var navCss = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/Components/Layout/NavMenu.razor.css"));
+
+        Assert.Contains("::deep .nav-item", navCss, StringComparison.Ordinal);
+        Assert.Matches(
+            @"\.nav-section\s*\{[^}]*display:\s*flex;[^}]*flex-direction:\s*column;[^}]*gap:\s*0\.25rem;",
+            navCss);
+        Assert.Matches(
+            @"::deep\s+\.nav-item\s*\{[^}]*display:\s*flex;[^}]*width:\s*100%;",
+            navCss);
+    }
+
+    [Fact]
+    public async Task GroupDetails_ShouldApplyTemplatesWithoutManagingThem()
+    {
+        var groupDetails = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/Components/Pages/GroupDetails.razor"));
+
+        Assert.Contains("CreateBatchFromTemplate", groupDetails, StringComparison.Ordinal);
+        Assert.DoesNotContain("OnValidSubmit=\"CreateCampaignTemplate\"", groupDetails, StringComparison.Ordinal);
+        Assert.DoesNotContain("DeleteCampaignTemplate", groupDetails, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task CampaignTemplatesPage_ShouldOwnTemplateManagement()
+    {
+        var templatesPage = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/Components/Pages/CampaignTemplates.razor"));
+
+        Assert.Contains("@page \"/templates\"", templatesPage, StringComparison.Ordinal);
+        Assert.Contains("OnValidSubmit=\"CreateCampaignTemplate\"", templatesPage, StringComparison.Ordinal);
+        Assert.Contains("DeleteCampaignTemplate", templatesPage, StringComparison.Ordinal);
+    }
+
+    private static string FindRepositoryFile(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 candidate;
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}

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

@@ -0,0 +1,60 @@
+namespace GmRelay.Bot.Tests.Web;
+
+public sealed class MiniAppDashboardTests
+{
+    [Fact]
+    public async Task MiniAppPage_ShouldExposeTelegramWebAppDashboardEntryPoint()
+    {
+        var miniAppPage = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/Components/Pages/MiniApp.razor"));
+
+        Assert.Contains("@page \"/miniapp\"", miniAppPage, StringComparison.Ordinal);
+        Assert.Contains("authenticateTelegramMiniApp", miniAppPage, StringComparison.Ordinal);
+        Assert.Contains("/auth/telegram-webapp", miniAppPage, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task AppShell_ShouldLoadTelegramWebAppScriptAndAuthenticator()
+    {
+        var appShell = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/Components/App.razor"));
+
+        Assert.Contains("telegram-web-app.js", appShell, StringComparison.Ordinal);
+        Assert.Contains("window.authenticateTelegramMiniApp", appShell, StringComparison.Ordinal);
+        Assert.Contains("Telegram.WebApp.initData", appShell, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task Program_ShouldMapTelegramWebAppAuthEndpoint()
+    {
+        var program = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/Program.cs"));
+
+        Assert.Contains("MapPost(\"/auth/telegram-webapp\"", program, StringComparison.Ordinal);
+        Assert.Contains("VerifyWebAppInitData", program, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task Styles_ShouldIncludeMiniAppMobileDashboardRules()
+    {
+        var css = await File.ReadAllTextAsync(FindRepositoryFile("src/GmRelay.Web/wwwroot/app.css"));
+
+        Assert.Contains("mini-app-page", css, StringComparison.Ordinal);
+        Assert.Contains("mini-app-auth-card", css, StringComparison.Ordinal);
+        Assert.Contains("@media (max-width: 768px)", css, StringComparison.Ordinal);
+    }
+
+    private static string FindRepositoryFile(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 candidate;
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}

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

@@ -77,6 +77,64 @@ public sealed class TelegramAuthServiceTests
         Assert.False(verified);
     }
 
+    [Fact]
+    public void VerifyWebAppInitData_ShouldAcceptValidTelegramWebAppPayload()
+    {
+        const string botToken = "test-bot-token";
+        var initData = CreateWebAppInitData(
+            botToken,
+            new Dictionary<string, string>
+            {
+                ["auth_date"] = DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString(),
+                ["query_id"] = "AAHdF6IQAAAAAN0XohDhrOrc",
+                ["user"] = """{"id":424242,"first_name":"Ada","last_name":"Lovelace","username":"ada"}"""
+            });
+        var service = new TelegramAuthService(CreateConfiguration(botToken));
+
+        var verified = service.VerifyWebAppInitData(initData, out var telegramId, out var name);
+
+        Assert.True(verified);
+        Assert.Equal(424242L, telegramId);
+        Assert.Equal("Ada Lovelace", name);
+    }
+
+    [Fact]
+    public void VerifyWebAppInitData_ShouldRejectTamperedHash()
+    {
+        const string botToken = "test-bot-token";
+        var initData = CreateWebAppInitData(
+            botToken,
+            new Dictionary<string, string>
+            {
+                ["auth_date"] = DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString(),
+                ["user"] = """{"id":424242,"first_name":"Ada"}"""
+            });
+        var tamperedInitData = initData.Replace("hash=", "hash=00", StringComparison.Ordinal);
+        var service = new TelegramAuthService(CreateConfiguration(botToken));
+
+        var verified = service.VerifyWebAppInitData(tamperedInitData, out _, out _);
+
+        Assert.False(verified);
+    }
+
+    [Fact]
+    public void VerifyWebAppInitData_ShouldRejectExpiredPayload()
+    {
+        const string botToken = "test-bot-token";
+        var initData = CreateWebAppInitData(
+            botToken,
+            new Dictionary<string, string>
+            {
+                ["auth_date"] = DateTimeOffset.UtcNow.AddDays(-2).ToUnixTimeSeconds().ToString(),
+                ["user"] = """{"id":424242,"first_name":"Ada"}"""
+            });
+        var service = new TelegramAuthService(CreateConfiguration(botToken));
+
+        var verified = service.VerifyWebAppInitData(initData, out _, out _);
+
+        Assert.False(verified);
+    }
+
     private static IConfiguration CreateConfiguration(string botToken) =>
         new ConfigurationBuilder()
             .AddInMemoryCollection(new Dictionary<string, string?>
@@ -106,4 +164,27 @@ public sealed class TelegramAuthServiceTests
         var hashBytes = HMACSHA256.HashData(secretKey, Encoding.UTF8.GetBytes(dataCheckString));
         return Convert.ToHexString(hashBytes).ToLowerInvariant();
     }
+
+    private static string CreateWebAppInitData(string botToken, IReadOnlyDictionary<string, string> values)
+    {
+        var hash = ComputeTelegramWebAppHash(botToken, values);
+        var encodedPairs = values
+            .OrderBy(pair => pair.Key, StringComparer.Ordinal)
+            .Select(pair => $"{Uri.EscapeDataString(pair.Key)}={Uri.EscapeDataString(pair.Value)}")
+            .Append($"hash={hash}");
+
+        return string.Join("&", encodedPairs);
+    }
+
+    private static string ComputeTelegramWebAppHash(string botToken, IReadOnlyDictionary<string, string> values)
+    {
+        var dataCheckString = string.Join(
+            "\n",
+            values
+                .OrderBy(pair => pair.Key, StringComparer.Ordinal)
+                .Select(pair => $"{pair.Key}={pair.Value}"));
+        var secretKey = HMACSHA256.HashData(Encoding.UTF8.GetBytes("WebAppData"), Encoding.UTF8.GetBytes(botToken));
+        var hashBytes = HMACSHA256.HashData(secretKey, Encoding.UTF8.GetBytes(dataCheckString));
+        return Convert.ToHexString(hashBytes).ToLowerInvariant();
+    }
 }