chore(release): bump version to 2.7.2

Issue: #33

.env.example

@@ -10,8 +10,19 @@ TELEGRAM_BOT_USERNAME=YOUR_BOT_USERNAME_HERE
 # Используется ботом для кнопки меню Telegram и кнопки /start.
 TELEGRAM_MINI_APP_URL=
 
+# Токен Discord application bot
+# Можно получить в Discord Developer Portal (https://discord.com/developers/applications)
+DISCORD_BOT_TOKEN=YOUR_DISCORD_BOT_TOKEN_HERE
+
 # Пароль для базы данных PostgreSQL
 POSTGRES_PASSWORD=StrongPasswordForDatabase
 
 # Локальный порт веб-интерфейса GM-Relay
 GMRELAY_WEB_PORT=8080
+
+# === Backup ===
+# Сколько дней хранить дампы PostgreSQL (default: 7)
+BACKUP_RETENTION_DAYS=7
+
+# Имя Docker volume для резервных копий БД
+BACKUP_VOLUME_NAME=game_pgbackups

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 1.9.1
+  VERSION: 2.7.2
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)
@@ -37,6 +37,20 @@ jobs:
           docker push git.codeanddice.ru/toutsu/gmrelay-bot:latest
           docker push git.codeanddice.ru/toutsu/gmrelay-bot:${{ env.VERSION }}
 
+      - name: Build Discord Bot image
+        run: |
+          docker build \
+            --label "org.opencontainers.image.source=https://git.codeanddice.ru/${{ gitea.repository }}" \
+            -f src/GmRelay.DiscordBot/Dockerfile \
+            -t git.codeanddice.ru/toutsu/gmrelay-discord-bot:latest \
+            -t git.codeanddice.ru/toutsu/gmrelay-discord-bot:${{ env.VERSION }} \
+            .
+
+      - name: Push Discord Bot image
+        run: |
+          docker push git.codeanddice.ru/toutsu/gmrelay-discord-bot:latest
+          docker push git.codeanddice.ru/toutsu/gmrelay-discord-bot:${{ env.VERSION }}
+
       - name: Build Web image
         run: |
           docker build \
@@ -51,9 +65,42 @@ jobs:
           docker push git.codeanddice.ru/toutsu/gmrelay-web:latest
           docker push git.codeanddice.ru/toutsu/gmrelay-web:${{ env.VERSION }}
 
+  # ЧАСТЬ 1.5: Сканируем собранные образы на уязвимости
+  scan-images:
+    needs: build-and-push
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Trivy
+        run: |
+          curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin
+
+      - name: Scan Bot image
+        run: |
+          trivy image \
+            --severity HIGH,CRITICAL \
+            --exit-code 1 \
+            --format table \
+            git.codeanddice.ru/toutsu/gmrelay-bot:${{ env.VERSION }}
+
+      - name: Scan Discord Bot image
+        run: |
+          trivy image \
+            --severity HIGH,CRITICAL \
+            --exit-code 1 \
+            --format table \
+            git.codeanddice.ru/toutsu/gmrelay-discord-bot:${{ env.VERSION }}
+
+      - name: Scan Web image
+        run: |
+          trivy image \
+            --severity HIGH,CRITICAL \
+            --exit-code 1 \
+            --format table \
+            git.codeanddice.ru/toutsu/gmrelay-web:${{ env.VERSION }}
+
   # ЧАСТЬ 2: Запускаем эти образы на самом сервере
   deploy:
-    needs: build-and-push
+    needs: scan-images
     runs-on: ubuntu-latest # Тот же локальный раннер
     steps:
       - name: Checkout repository
@@ -63,6 +110,7 @@ jobs:
         run: |
           echo "TELEGRAM_BOT_TOKEN=${{ secrets.TELEGRAM_BOT_TOKEN }}" > .env
           echo "POSTGRES_PASSWORD=${{ secrets.POSTGRES_PASSWORD }}" >> .env
+          echo "DISCORD_BOT_TOKEN=${{ secrets.DISCORD_BOT_TOKEN }}" >> .env
           echo "TELEGRAM_BOT_USERNAME=${{ secrets.TELEGRAM_BOT_USERNAME }}" >> .env
           echo "TELEGRAM_MINI_APP_URL=${{ secrets.TELEGRAM_MINI_APP_URL }}" >> .env
 
@@ -72,7 +120,7 @@ jobs:
           docker login git.codeanddice.ru/ -u toutsu -p ${{ secrets.GIT_TOKEN }}
           
           # Pull гарантирует, что мы получили нужную версию.
-          docker compose pull bot web
+          docker compose pull bot discord web
           
           # Запускаем! Флаг -d оставит их работать в фоне.
           docker compose up -d

.gitea/workflows/pr-checks.yml

@@ -0,0 +1,81 @@
+name: PR Checks
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test-and-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.0.x'
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Verify Trivy dependency scan inputs
+        run: |
+          lock_count="$(find . -name packages.lock.json -not -path "*/bin/*" -not -path "*/obj/*" | tee trivy-targets.txt | wc -l)"
+          echo "Trivy NuGet lock files: ${lock_count}"
+          if [ "${lock_count}" -eq 0 ]; then
+            echo "::error::No packages.lock.json files found. Trivy would scan 0 NuGet dependency files."
+            exit 1
+          fi
+
+      # ── Linting ──
+
+      - name: Lint C# code style
+        run: dotnet format --verify-no-changes --verbosity diagnostic
+
+      # ── Security ──
+
+      - name: Check NuGet packages for vulnerabilities
+        run: |
+          dotnet list package --vulnerable --include-transitive 2>&1 | tee nuget-audit.txt
+          if grep -qi "has the following vulnerable packages" nuget-audit.txt; then
+            echo "::error::Vulnerable NuGet packages found!"
+            exit 1
+          fi
+          echo "No vulnerable packages detected."
+
+      - name: Install Trivy
+        run: |
+          curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin
+          trivy --version
+
+      - name: Trivy filesystem security scan
+        run: |
+          set +e
+          trivy fs --scanners vuln,misconfig,secret --exit-code 1 --severity HIGH,CRITICAL . 2>&1 | tee trivy-scan.log
+          trivy_exit="${PIPESTATUS[0]}"
+          if ! grep -Eq "Number of language-specific files[[:space:]]+num=[1-9][0-9]*" trivy-scan.log; then
+            echo "::error::Trivy did not detect any language-specific dependency files."
+            exit 1
+          fi
+          exit "${trivy_exit}"
+
+      # ── Build (includes SAST via SecurityCodeScan Roslyn analyzer) ──
+
+      - name: Build Shared
+        run: dotnet build src/GmRelay.Shared/GmRelay.Shared.csproj --no-restore
+
+      - name: Build Bot (compile check, includes SAST)
+        run: dotnet build src/GmRelay.Bot/GmRelay.Bot.csproj --no-restore
+
+      - name: Build Discord Bot (compile check, includes SAST)
+        run: dotnet build src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj --no-restore
+
+      - name: Build Web (compile check, includes SAST)
+        run: dotnet build src/GmRelay.Web/GmRelay.Web.csproj --no-restore
+
+      # ── Tests ──
+
+      - name: Run tests
+        run: dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --verbosity normal

CLAUDE.md

@@ -0,0 +1,144 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Build, Test, and Development Commands
+
+This is a .NET 10 solution using the modern XML-based `.slnx` format. The global SDK version is `10.0.100` with `rollForward: latestFeature`.
+
+**Build the solution:**
+```bash
+dotnet build
+```
+
+**Build individual projects (the CI does this to include SAST via SecurityCodeScan):**
+```bash
+dotnet build src/GmRelay.Shared/GmRelay.Shared.csproj --no-restore
+dotnet build src/GmRelay.Bot/GmRelay.Bot.csproj --no-restore
+dotnet build src/GmRelay.Web/GmRelay.Web.csproj --no-restore
+```
+
+**Run all tests:**
+```bash
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --verbosity normal
+```
+
+**Run a single test class or method:**
+```bash
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~YourTestClassName"
+```
+
+**Lint and format:**
+```bash
+dotnet format --verify-no-changes --verbosity diagnostic   # CI enforcement
+dotnet format                                                  # Apply fixes
+```
+
+**Check for vulnerable packages:**
+```bash
+dotnet list package --vulnerable --include-transitive
+```
+
+**Restore with lock file verification:**
+The repo enforces `RestorePackagesWithLockFile=true`. After adding or updating packages, commit the updated `packages.lock.json` files or the Trivy scan in CI will fail.
+
+**Run locally with Aspire (dev orchestration):**
+```bash
+dotnet run --project src/GmRelay.AppHost/GmRelay.AppHost.csproj
+```
+This automatically starts PostgreSQL in a container, the Bot, and the Web dashboard.
+
+**Run locally with Docker Compose (production-like):**
+```bash
+cp .env.example .env
+# Edit .env with your TELEGRAM_BOT_TOKEN, TELEGRAM_BOT_USERNAME, POSTGRES_PASSWORD
+docker compose up -d
+```
+
+## High-Level Architecture
+
+### Project Roles and Runtime Model
+
+| Project | Runtime | Key Trait |
+|---|---|---|
+| `GmRelay.Bot` | `Microsoft.NET.Sdk.Worker` | **Native AOT** binary. Telegram long polling bot + stateless scheduler. |
+| `GmRelay.Web` | `Microsoft.NET.Sdk.Web` | Blazor Server dashboard. Cookie auth via Telegram Login Widget / Mini App `initData`. |
+| `GmRelay.Shared` | Plain library | Domain models and platform-neutral view builders. **Must not depend on `Telegram.Bot`**. |
+| `GmRelay.ServiceDefaults` | Aspire shared project | OpenTelemetry, health checks, HTTP resilience. Referenced by both Bot and Web. |
+| `GmRelay.AppHost` | Aspire orchestrator | Dev-only. Spins up PostgreSQL and wires Bot + Web with service discovery. |
+
+**Important:** `README.md` references `GmRelay.Migrator` and `GmRelay.Worker`, but these projects do not exist. Migrations (`DbUp`) and background workers (`BackgroundService`) live inside `GmRelay.Bot`.
+
+### Vertical Slice Architecture with Explicit DI
+
+Each use case is a self-contained vertical slice: a C# record (Command/Query) + Handler class with all logic (SQL, Telegram API calls, validation). There are no abstract repository interfaces or service layers.
+
+Because the Bot is compiled as Native AOT (`PublishAot=true`, `EnableTrimAnalyzer=true`), **all DI registrations are explicit** in `src/GmRelay.Bot/Program.cs`. There is no assembly scanning or reflection-based discovery. When adding a new handler, you must register it manually in Program.cs.
+
+### Database Access: Npgsql + Dapper.AOT + DbUp
+
+**No EF Core** — it is incompatible with Native AOT. The stack is:
+- **Npgsql** ADO.NET for connections.
+- **Dapper 2.1.72** with **Dapper.AOT 1.0.48** for compile-time source-generated mapping (AOT-safe).
+- **DbUp 7.0.1** for migrations. SQL scripts are embedded resources in `src/GmRelay.Bot/Migrations/` (V001 through V015).
+- `DbMigrator.MigrateUp()` runs on every Bot startup.
+
+Both Bot and Web share the same PostgreSQL database. Web registers `NpgsqlDataSource` via `builder.AddNpgsqlDataSource("gmrelaydb")` (Aspire integration), while Bot registers it manually to avoid reflection-based Aspire configuration at AOT time.
+
+### Platform-Neutral Rendering (ADR-002)
+
+Rendering is split into two stages:
+1. **View Builder** (`GmRelay.Shared`) — platform-agnostic view model from domain DTOs.
+2. **Platform Renderer** — `TelegramSessionBatchRenderer` lives in both `GmRelay.Bot` and `GmRelay.Web` (temporary duplication until a third Telegram consumer justifies extracting `GmRelay.Shared.Telegram`).
+
+This means `GmRelay.Shared` must remain free of `Telegram.Bot` types. If you need to add rendering logic that produces `InlineKeyboardMarkup`, it belongs in the Bot or Web project, not Shared.
+
+### Stateless Scheduling
+
+The session scheduler (`SessionSchedulerService`) is a `BackgroundService` with a `PeriodicTimer(TimeSpan.FromMinutes(1))`. On each tick it queries PostgreSQL for sessions needing action (T-24h confirmation, T-5min join link) and updates their status. There is no in-memory state — the database is the single source of truth. This design was chosen specifically because Quartz.NET is incompatible with Native AOT.
+
+### Health Checks
+
+- **Bot:** Custom `BotHealthCheckHostedService` listens on port 8081. The Docker health check hits `localhost:8081/health`.
+- **Web:** Standard ASP.NET Core health checks on `/health` (JSON response with status and timestamp) and `/alive` (liveness probe tag filter). Exposed via `GmRelay.ServiceDefaults`.
+
+### Authentication and Security
+
+- **Telegram Login Widget** and **Mini App `initData`** verification via HMAC-SHA256. Cookie auth is hardened (`HttpOnly`, `SecurePolicy.Always`, `SameSite.Strict`).
+- Web Data Protection keys are persisted to `/app/dataprotection-keys` (Docker volume `web_keys`).
+- Security headers middleware (`X-Content-Type-Options`, `X-Frame-Options`, `Referrer-Policy`, `Permissions-Policy`) is applied globally in Web.
+- `SecurityCodeScan.VS2019` (5.6.7) is included in all projects via `Directory.Build.props` for SAST at build time.
+- Connection string passwords are redacted in logs via `SecretRedactor`.
+
+### CI/CD Pipeline
+
+`.gitea/workflows/pr-checks.yml` runs on every PR to `main`:
+1. `dotnet restore`
+2. Verify `packages.lock.json` files exist for Trivy
+3. `dotnet format --verify-no-changes`
+4. `dotnet list package --vulnerable`
+5. Trivy filesystem scan (`vuln,misconfig,secret`, HIGH/CRITICAL)
+6. Build Shared → Bot → Web
+7. Run tests
+
+`.gitea/workflows/deploy.yml` runs on push to `main`:
+1. Build and push `gmrelay-bot` and `gmrelay-web` images to `git.codeanddice.ru/toutsu/...`
+2. Trivy image scan on both images (HIGH/CRITICAL, exit-code 1)
+3. Create `.env` from secrets and run `docker compose up -d`
+
+### Environment Configuration
+
+Key environment variables (see `.env.example`):
+- `TELEGRAM_BOT_TOKEN`, `TELEGRAM_BOT_USERNAME`, `TELEGRAM_MINI_APP_URL`
+- `POSTGRES_PASSWORD`
+- `GMRELAY_WEB_PORT` (default 8080)
+- `ConnectionStrings__gmrelaydb` — used by both Bot and Web
+
+The Bot reads config as `Telegram:BotToken` (colon) which maps from `Telegram__BotToken` (double underscore) via environment variables.
+
+### Docker Images
+
+- **Bot:** Multi-stage Dockerfile. Build stage uses `sdk:10.0-noble` with `clang` and `zlib1g-dev` for AOT compilation. Final stage uses `runtime-deps:10.0-noble`. Exposes 8081.
+- **Web:** Multi-stage Dockerfile. Build stage uses `sdk:10.0-noble`. Final stage uses `aspnet:10.0-noble` with `libgssapi-krb5-2` and `wget`. Exposes 8080.
+
+Both images are built for multi-arch (`linux/amd64`, `linux/arm64`) to support Raspberry Pi 5 (ARM64) deployment.

Directory.Build.props

@@ -1,10 +1,15 @@
 <Project>
   <PropertyGroup>
-    <Version>1.9.1</Version>
+    <Version>2.7.2</Version>
     <TargetFramework>net10.0</TargetFramework>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
   </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="SecurityCodeScan.VS2019" Version="5.6.7" PrivateAssets="all" />
+  </ItemGroup>
 </Project>

GM-Relay.slnx

@@ -2,6 +2,7 @@
   <Folder Name="/src/">
     <Project Path="src/GmRelay.AppHost/GmRelay.AppHost.csproj" />
     <Project Path="src/GmRelay.Bot/GmRelay.Bot.csproj" />
+    <Project Path="src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj" />
     <Project Path="src/GmRelay.ServiceDefaults/GmRelay.ServiceDefaults.csproj" />
     <Project Path="src/GmRelay.Web/GmRelay.Web.csproj" />
   </Folder>

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Toutsu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.

PR_DESCRIPTION.md

@@ -0,0 +1,23 @@
+# Discord /newsession и /listsessions — Issue #28
+
+## Что реализовано
+- Slash-команда /newsession для создания игровых сессий прямо из Discord.
+- Slash-команда /listsessions для просмотра предстоящих игр в сервере.
+- DiscordPermissionChecker — проверка прав (owner / admin / manager).
+- DiscordPlatformMessenger — реализация IPlatformMessenger для Discord (NetCord REST).
+- Полная интеграция в DI (Program.cs).
+
+## Архитектура
+- Vertical slice: каждая команда — отдельный файл (Command + Handler).
+- Platform-agnostic SQL: используются колонки platform, external_group_id, external_user_id.
+- Рендеринг переиспользует существующий DiscordSessionBatchRenderer.
+
+## TDD
+- 212 тестов, все зелёные.
+- Source-level тесты проверяют паттерны: Dapper, Npgsql, транзакции, CancellationToken, платформенную нейтральность.
+
+## Версия
+- Minor bump: 2.3.0 → 2.4.0
+- Синхронизировано: Directory.Build.props, compose.yaml, deploy.yml, NavMenu.razor.
+
+Closes #28

README.md

@@ -1,210 +1,186 @@
 # 🎲 GM-Relay: TTRPG Session Scheduling Bot & Web Dashboard
 
-**GM-Relay** — это комплексное решение для Мастеров Подземелий (ГМов), состоящее из высокопроизводительного Telegram-бота и удобного веб-интерфейса. Предназначено для автоматизации записи игроков на сессии, управления расписанием и проведения игр.
+**GM-Relay** — это комплексное решение для Мастеров Подземелий (ГМов), состоящее из высокопроизводительного Telegram-бота, Discord worker и удобного веб-интерфейса. Предназначено для автоматизации записи игроков на сессии, управления расписанием и проведения игр.
 
 Проект разработан с упором на производительность, архитектуру Vertical Slice, Native AOT (для бота) и удобство развертывания с использованием .NET Aspire.
 
-**Текущая версия:** `v1.9.1`.
+**Текущая версия:** `v2.7.0`.
 
 ---
 
-## ✨ Ключевые возможности
+## ✨ Key Features
 
-### 🤖 Telegram Бот
-- **📅 Создание расписаний (Batch Sessions)**: Создавайте сразу несколько игр одним сообщением (на неделю или месяц вперед).
+### 🤖 Telegram Bot
+- **📅 Создание расписаний (Batch Sessions)**: Создавайте сразу несколько игр одним сообщением изменения (на недельный месяц в перед).
+- **🖼 Обложки расписаний**: И batch-посту можно прикрепить фото к `/newsession` или указать строку `Картинка: https://...`; бот отправит обложку перед сообщением записи.
 - **⚡ 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**: 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**.
+- **📁 Поддержка Форумов (Telegram Topics)**: Если `/newsession` запущен в теме форума Telegram, расписание и групповые уведомления остаются в этой теме; при запуске из корня форума бот создает отдельную тему и сообщает о необходимости прав admin/Manage Topics, если их не хватает.
+- **❌ Управление сессиями**: Owner и назначенные co-GM могут создавать, отменять, удалять и переносить игры из Telegram через `/listsessions`; публичный пост записи показывает только кнопки игроков.
+- **🔄 Голосование за перенос**: Быстрый поиск свободного места с через свободное недель и кнопками новых времени и дедлайном.
+- **🔔 Уведомления**: Игрок получают за 24 часа, напоминание за 1 час, ссылку перед игрой, отмены и переносы; групповые уведомления при этом остаются.
+- **🕐 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.
+- **🔄 Автоматическая синхронизация**: Любые изменения в веб-интерфейсе мгновенно обновляют сообщения с расписанием в подключенных Telegram- и Discord-каналах.
+
+### Discord Bot
+- **Slash-команды расписания**: GM создаёт сессию через `/newsession` и публикует актуальное расписание через `/listsessions`.
+- **Кнопки записи и выхода**: игроки нажимают Join/Leave в Discord-сообщении; бот отвечает ephemeral-сообщением и обновляет schedule message.
+- **Подтверждения и RSVP**: scheduler публикует запрос подтверждения в Discord-канале, игроки отвечают кнопками, а GM получает исходы RSVP через платформенный messenger.
+- **Напоминания и ссылки**: one-hour reminders и join-link notifications отправляются в Discord DM при включенных личных уведомлениях; сбои DM логируются без публичного fallback.
+- **Переносы**: deadline-сервис обновляет Discord vote message и schedule message через `IPlatformMessenger`.
+- **Лимиты и waitlist**: при заполненном составе игрок попадает в waitlist, а при выходе участника первый ожидающий автоматически продвигается в основной состав.
 
 ### 🌐 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. Mini App ждёт данные Telegram при старте и автоматически обновляет состояние входа после внешнего Telegram Login.
-- **📝 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.
-- **🔄 Автоматическая синхронизация**: Любые изменения в веб-интерфейсе мгновенно обновляют сообщения с расписанием в Telegram-чатах игроков.
-- **🕒 Управление временем**: UI адаптирован под московское время (UTC+3), в то время как база данных работает в UTC.
+- **🔐 Авторизация через Telegram**: Telegram Login Widget с HMAC-SHA256 валидацией.
+- **📱 Telegram Mini App Dashboard**: Мобильная панель открывается из Telegram, проверяет `initData` на сервере, учитывает safe-area телефона и верхнюю панель Telegram.
+- **✏️ Редактирование**: Детальное изменение дат, названий и статусов сессий.
+- **🤝 Co-GM и делегирование**: Owner назначает помощников по Telegram ID; co-GM управляет расписанием, но **не может назначать других co-GM**.
+- **📋 Шаблоны кампаний**: Вкладка `Шаблоны` отдельно от страницы группы: сохранение типовых параметров и запуск нового batch из шаблона.
+- **📦 Bulk-операции для Batch Sessions**:
+  - обновить общий `title`/`link` у всей пачки;
+  - перенести пачку на фиксированный шаг в днях;
+  - клонировать batch на следующую неделю или месяц.
+- **⬆️ Управление очередью**: Заполненность, лист ожидания и ручное повышение игрока из очереди.
+- **📜 История изменений сессий**: Страница `/session/{id}/history` показывает аудит-лог всех значимых изменений (время, ссылка, название, участники, статус) с указанием акторов и дат.
+- **📊 Статистика посещаемости**: Страница `/group/{id}/stats` показывает долю присутствия, количество пропусков и среднюю явку по каждому игроку группы.
+- **🔄 Автосинхронизация**: Изменения в вебе мгновенно перерисовывают platform message расписания через `IPlatformMessenger`.
 
 ---
 
 ## 🛠 Технологический стек
 
-- **Язык**: C# 14 (.NET 10)
-- **Архитектура**: Vertical Slice Architecture, общая библиотека (`GmRelay.Shared`) для доменной логики.
-- **Бот**: Telegram.Bot, Native AOT.
-- **Веб-интерфейс**: Blazor Server.
-- **Оркестрация**: .NET Aspire (`GmRelay.AppHost`).
-- **База данных**: PostgreSQL
-- **ORM**: Dapper (с использованием Dapper.AOT для source generators).
-- **Миграции**: DbUp.
-- **Развертывание**: Docker Compose + Multi-arch (AMD64/ARM64).
+| Компонент | Технология |
+|---|---|
+| Язык | C# 14 (.NET 10) |
+| Архитектура | Vertical Slice + общая библиотека `GmRelay.Shared` |
+| Боты | Telegram.Bot (**Native AOT**), NetCord Gateway (Discord worker) |
+| Веб | Blazor Server |
+| Оркестрация | .NET Aspire (`GmRelay.AppHost`) |
+| БД | PostgreSQL |
+| ORM | Dapper + **Dapper.AOT** (source generators) |
+| Миграции | DbUp |
+| Развёртывание | Docker Compose, Multi-arch (**AMD64/ARM64**) |
+
+> [!NOTE]
+> При использовании Dapper в режиме Native AOT все SQL-запросы используют строго типизированные DTO; динамические типы (`dynamic`) не поддерживаются.
 
 ---
 
 ## 🚀 Быстрый старт (Docker Compose)
 
-Проект использует Docker Compose для одновременного запуска базы данных, бота и веб-интерфейса.
-
-### 1. Подготовка
-Убедитесь, что у вас установлены **Docker** и **Docker Compose**.
-
-### 2. Настройка окружения
-Скопируйте файл-шаблон и заполните его значениями:
+**Требования:** Docker и Docker Compose.
 
+### 1. Настройка окружения
 ```bash
 cp .env.example .env
 ```
 
-Отредактируйте `.env`:
-
+**Ключевые переменные `.env`:**
 ```env
-# Токен вашего бота от @BotFather (используется и для бота, и как секретный ключ для веб-авторизации)
+# Токен от @BotFather (используется ботом и как секретный ключ веб-авторизации)
 TELEGRAM_BOT_TOKEN=ваш_токен_здесь
 
-# Имя вашего бота в Telegram (без @), например: GmRelayBot.
-# Найти его можно в информации о боте у @BotFather. 
-# Используется для работы виджета авторизации (Telegram Login Widget).
+# Токен Discord application bot
+DISCORD_BOT_TOKEN=ваш_discord_токен_здесь
+
+# Имя бота без @ (для 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.
+# HTTPS URL Mini App, например https://your-domain.example/miniapp
 TELEGRAM_MINI_APP_URL=https://your-domain.example/miniapp
 
-# Пароль для базы данных PostgreSQL
 POSTGRES_PASSWORD=ваш_надежный_пароль
-
-# Локальный порт веб-интерфейса GM-Relay
 GMRELAY_WEB_PORT=8080
 ```
 
-*(Опционально)* Настройте домен Telegram бота в @BotFather командой `/setdomain` для работы виджета авторизации на вашем сайте.
+**Настройка в @BotFather:**
+- Команда `/setdomain` для работы виджета авторизации на вашем домене.
+- Для Mini App настройте домен Web Dashboard и menu button на URL из `TELEGRAM_MINI_APP_URL`.
+- Начиная с **v1.9.3** дополнительных действий для фикса входа не требуется: fallback выполняется внутри активного Telegram WebView по тому же HTTPS-адресу `/miniapp`.
 
-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:
+### 2. Запуск
 ```bash
 docker compose up -d
 ```
-Инфраструктура автоматически:
-- Создаст локальную Docker-сеть и volume PostgreSQL, если их ещё нет.
-- Поднимет PostgreSQL, доступный для контейнеров как `db:5432`.
-- Запустит бота (применив миграции БД).
-- Запустит веб-интерфейс на `http://localhost:8080` или другом порту из `GMRELAY_WEB_PORT`.
+
+**Автоматически выполняется:**
+- создание Docker-сети и volume PostgreSQL;
+- подъём PostgreSQL (`db:5432`);
+- запуск бота с плавной миграцией (DbUp);
+- запуск отдельного Discord Gateway worker на NetCord;
+- запуск веб-приложения с подключением к БД и Telegram API.
+
+### 3. Первоначальная настройка
+1. Напишите боту `/start`.
+2. Создайте группу через `/newgroup`.
+3. Откройте Mini App или Web Dashboard для расширенного управления.
+4. Для Discord пригласите application bot на сервер с правами `bot` и `applications.commands`.
+5. В Discord создайте сессию через `/newsession` или опубликуйте расписание через `/listsessions`; игроки записываются и выходят кнопками в опубликованном сообщении.
+
+## 💾 Backup и восстановление
+
+Проект включает автоматический ежедневный backup PostgreSQL через сервис `db-backup` в Docker Compose.
+
+### Как это работает
+- **Каждый день в 03:00** выполняется `pg_dump` базы `gmrelay_db`.
+- Дампы сжимаются (`gzip`) и сохраняются в volume `pgbackups` (`/backups`).
+- Формат имени: `gmrelay_db_YYYYMMDD_HHMMSS.sql.gz`.
+- Ротация: по умолчанию хранятся последние **7 дней** (настраивается через `BACKUP_RETENTION_DAYS`).
+
+### Проверка бэкапов
+```bash
+docker compose exec db-backup ls -la /backups
+```
+
+### Ручное создание дампа
+```bash
+docker compose exec db-backup sh -c "pg_dump -h db -U gmrelay -d gmrelay_db | gzip > /backups/gmrelay_db_manual.sql.gz"
+```
+
+### Восстановление из бэкапа
+```bash
+# Использовать последний автоматический бэкап
+./scripts/restore.sh
+
+# Или указать конкретный файл
+./scripts/restore.sh backups/gmrelay_db_20260512_030000.sql.gz
+```
+
+> [!WARNING]
+> Восстановление **перезаписывает текущую базу данных**. Убедитесь, что вы понимаете последствия, прежде чем запускать `restore.sh`.
+
+### Переменные окружения (опциональные)
+```env
+BACKUP_RETENTION_DAYS=7
+BACKUP_VOLUME_NAME=game_pgbackups
+```
 
 ---
 
-## ⚙️ Настройка бота в Telegram
+## 🗂 Структура репозитория
 
-Чтобы бот работал корректно:
-1. **Добавьте бота в группу** (или Супергруппу/Форум).
-2. **Назначьте бота Администратором**. 
-3. **Необходимые права**:
-    * `Выбор тем` (Managed Topics) — **обязательно** для Форумов.
-    * `Отправка сообщений`.
-    * `Закрепление сообщений` — рекомендуется.
-
-> [!TIP]
-> 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.
-
----
-
-## 📝 Инструкция для Мастера
-
-### Создание расписания игр
-Используйте команду `/newsession` с описанием в следующем формате:
-
-```text
-/newsession
-Название: Легенды Берега Мечей (D&D 5e)
-Время: 15.05.2024 19:30
-Время: 22.05.2024 19:00
-Мест: 4
-Ссылка: https://discord.gg/invite-link
 ```
-
-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
+├── src/
+│   ├── GmRelay.AppHost/         # .NET Aspire orchestrator
+│   ├── GmRelay.Bot/             # Telegram-бот (Native AOT)
+│   ├── GmRelay.DiscordBot/      # Discord Gateway worker на NetCord
+│   ├── GmRelay.ServiceDefaults/  # Aspire service defaults
+│   ├── GmRelay.Shared/          # Общие доменные модели
+│   └── GmRelay.Web/             # Blazor Server dashboard
+├── tests/
+│   └── GmRelay.Bot.Tests/       # xUnit + NSubstitute
+├── compose.yaml                  # Docker Compose (AMD64 + ARM64)
+└── .env.example                  # Шаблон переменных окружения
 ```
 
-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.
-
-### Делегирование управления
-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 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.
-- `⏰ 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.
-
----
-
-## 🏗 Разработка и запуск локально (.NET Aspire)
-
-Для локальной разработки проще всего использовать .NET Aspire:
-
-1. Установите [.NET 10 SDK](https://dotnet.microsoft.com/download/dotnet/10.0) и workload Aspire.
-2. Откройте решение `GM-Relay.slnx`.
-3. Установите переменные окружения (или user secrets) для `GmRelay.AppHost`.
-4. Запустите проект `GmRelay.AppHost`. Aspire Dashboard запустится автоматически, предоставляя удобный мониторинг БД, бота и веб-интерфейса.
-
-> [!NOTE]
-> При использовании **Dapper** в режиме Native AOT, все SQL-запросы используют строго типизированные DTO. Динамические типы (`dynamic`) не поддерживаются.
-
 ---
 
 ## 📜 Лицензия
-Проект распространяется под лицензией MIT. Использование в некоммерческих целях приветствуется.
+
+MIT License. См. [LICENSE](./LICENSE).
+
+---
+
+*Построено с ❤️ для TTRPG-сообщества.*

RELEASE_NOTES.md

@@ -0,0 +1,23 @@
+## 🛠 Patch 2.4.0 — Discord /newsession и /listsessions
+
+Реализованы slash-команды Discord для создания сессий и просмотра расписания без Web Dashboard.
+
+## 🧩 Что вошло в релиз
+- src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionCommand.cs — slash-команда /newsession с параметрами (title, time, seats, link)
+- src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionHandler.cs — handler создания batch + session в БД
+- src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsCommand.cs — slash-команда /listsessions
+- src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsHandler.cs — handler запроса активных сессий с embed-рендерингом
+- src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPermissionChecker.cs — проверка прав через Discord permissions bitflag (Administrator = 0x8)
+- src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPlatformMessenger.cs — реализация IPlatformMessenger для Discord через NetCord REST
+- src/GmRelay.DiscordBot/Program.cs — регистрация DI: handlers, permission checker, messenger
+- 	ests/GmRelay.Bot.Tests/Discord/ — 20+ TDD-тестов на парсинг, права, структуру, DI, рендеринг
+- Синхронизированы версии: Directory.Build.props, NavMenu.razor, compose.yaml, deploy.yml → 2.4.0
+
+## 🗺 Что это даёт
+- Мастера (GM) могут создавать сессии прямо из Discord, не заходя в Web.
+- Участники сервера видят расписание через /listsessions.
+- Единая PostgreSQL модель для Telegram и Discord — никакого дублирования данных.
+
+## 📦 Версия и деплой
+- версия обновлена до 2.4.0
+- Docker-образы используют тег 2.4.0

compose.yaml

@@ -16,8 +16,40 @@ services:
       timeout: 3s
       retries: 10
 
+  db-backup:
+    image: postgres:17-alpine
+    restart: unless-stopped
+    depends_on:
+      db:
+        condition: service_healthy
+    environment:
+      POSTGRES_USER: gmrelay
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}
+      POSTGRES_DB: gmrelay_db
+      PGPASSWORD: ${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}
+      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+    volumes:
+      - pgbackups:/backups
+    networks:
+      - gmrelay
+    entrypoint: ["sh", "-c"]
+    command:
+      - |
+        cat > /usr/local/bin/backup.sh << 'EOF'
+        #!/bin/sh
+        set -e
+        TMPFILE="/tmp/backup_$$.sql"
+        pg_dump -h db -U gmrelay -d gmrelay_db > "$TMPFILE"
+        gzip "$TMPFILE"
+        mv "$TMPFILE.gz" "/backups/gmrelay_db_$(date +%Y%m%d_%H%M%S).sql.gz"
+        find /backups -name 'gmrelay_db_*.sql.gz' -type f -mtime +${BACKUP_RETENTION_DAYS} -delete
+        EOF
+        chmod +x /usr/local/bin/backup.sh
+        echo "0 3 * * * /usr/local/bin/backup.sh" | crontab -
+        crond -f
+
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:1.9.1
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:2.7.2
     restart: always
     depends_on:
       db:
@@ -28,9 +60,31 @@ services:
       - "Telegram__MiniAppUrl=${TELEGRAM_MINI_APP_URL:-}"
     networks:
       - gmrelay
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8081/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+
+  discord:
+    image: git.codeanddice.ru/toutsu/gmrelay-discord-bot:2.7.2
+    restart: always
+    depends_on:
+      db:
+        condition: service_healthy
+    environment:
+      - "ConnectionStrings__gmrelaydb=Host=db;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}"
+      - "Discord__Token=${DISCORD_BOT_TOKEN:?Set DISCORD_BOT_TOKEN in .env}"
+    networks:
+      - gmrelay
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8082/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
 
   web:
-    image: git.codeanddice.ru/toutsu/gmrelay-web:1.9.1
+    image: git.codeanddice.ru/toutsu/gmrelay-web:2.7.2
     restart: always
     depends_on:
       db:
@@ -46,12 +100,19 @@ services:
       - web_keys:/app/dataprotection-keys
     networks:
       - gmrelay
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8080/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
 
 volumes:
   pgdata:
     name: ${POSTGRES_VOLUME_NAME:-game_pgdata}
   web_keys:
     name: ${WEB_KEYS_VOLUME_NAME:-gmrelay_web_keys}
+  pgbackups:
+    name: ${BACKUP_VOLUME_NAME:-game_pgbackups}
 
 networks:
   gmrelay:

docs/adr/002-platform-neutral-batch-rendering.md

@@ -0,0 +1,66 @@
+# ADR 002: Platform-Neutral Batch Rendering
+
+## Status
+
+**Accepted** — implemented in v1.10.0 (PR #42).
+
+## Context
+
+`SessionBatchRenderer` жил в `GmRelay.Shared` и напрямую зависел от `Telegram.Bot` (`InlineKeyboardMarkup`, `ParseMode.Html`). Это создавало проблемы:
+
+1. **Shared не был platform-neutral.** Любой платформенный проект (Discord, Slack, WebSocket) тащил Telegram-зависимость.
+2. **Дублирование логики.** `GmRelay.Web` использовал тот же рендерер через прямую зависимость от `Shared`, но Web — это не Telegram-клиент.
+3. **Невозможно написать unit-тесты без Telegram-объектов.** Smoke-тесты создавали InlineKeyboardMarkup даже для проверки чисто доменной логики.
+
+## Decision
+
+Разделить рендеринг на две стадии:
+
+1. **View Builder (platform-neutral)** — собирает view model из доменных DTO.
+2. **Platform Renderer (platform-specific)** — превращает view model в платформенное представление.
+
+```
+Domain DTOs
+    │
+    ▼
+SessionBatchViewBuilder (Shared)
+    │
+    ▼
+SessionBatchViewModel (platform-neutral)
+    │
+    ├──► TelegramSessionBatchRenderer ──► HTML + InlineKeyboardMarkup
+    │
+    └──► DiscordSessionBatchRenderer ──► Discord embeds + buttons
+```
+
+### Изменённые компоненты
+
+| Компонент | Было | Стало |
+|---|---|---|
+| `SessionBatchRenderer` | `GmRelay.Shared.Rendering` | Удалён |
+| `SessionBatchViewBuilder` | — | `GmRelay.Shared.Rendering` |
+| `SessionBatchViewModel` | — | `GmRelay.Shared.Rendering` |
+| `TelegramSessionBatchRenderer` | — | `GmRelay.Bot` + `GmRelay.Web` |
+| `DiscordSessionBatchRenderer` | — | `GmRelay.DiscordBot.Rendering` |
+| `BatchMessageEditor` | `GmRelay.Shared.Rendering` | `GmRelay.Bot` + `GmRelay.Web` |
+
+## Consequences
+
+### Positive
+
+- `GmRelay.Shared` больше не зависит от `Telegram.Bot`. Чистый platform-agnostic проект.
+- Discord renderer lives in `GmRelay.DiscordBot`, so NetCord stays out of `Shared`.
+- Unit-тесты ViewBuilder не создают `InlineKeyboardMarkup`.
+- Логика подсчёта игроков, сортировки сессий и генерации действий — в одном месте (ViewBuilder).
+
+### Negative
+
+- **Временное дублирование.** `TelegramSessionBatchRenderer` и `BatchMessageEditor` скопированы в `Bot` и `Web`. Планируется вынести в `GmRelay.Shared.Telegram` при появлении третьего Telegram-потребителя.
+- **Дополнительная стадия.** Теперь два вызова вместо одного: `Build` + `Render`. Этоtrade-off за чистоту абстракции.
+
+## Related
+
+- Issue #22 — этот рефакторинг.
+- Issue #26 — Discord Bot MVP (потребитель новой архитектуры).
+- Issue #31 — scheduler notifications and reschedule deadline updates now use `IPlatformMessenger` for Telegram and Discord.
+- ADR 001 — vertical slice, native AOT, Aspire (`docs/adr/0001-use-vertical-slice-native-aot-and-aspire.md`).

docs/c4-system-context.md

@@ -1,4 +1,4 @@
-# GM-Relay — C4 Model
+# GM-Relay - C4 Model
 
 ## Level 1: System Context
 
@@ -6,19 +6,24 @@
 C4Context
     title GM-Relay System Context
 
-    Person(gm, "Game Master", "Создаёт сессии, управляет расписанием игр")
-    Person(player, "Player", "Подтверждает участие через inline-кнопки")
+    Person(gm, "Game Master", "Creates sessions and manages schedules")
+    Person(player, "Player", "Joins, leaves, confirms, and receives reminders")
 
-    System(gmrelay, "GM-Relay Bot", "Telegram Worker Service на Raspberry Pi. Управляет подтверждениями, рассылает напоминания и ссылки.")
+    System(gmrelay, "GM-Relay", "Telegram bot, Discord worker, web dashboard, and shared scheduling logic")
 
-    System_Ext(telegram, "Telegram Bot API", "Long Polling. Сообщения, inline keyboards, callback queries.")
-    SystemDb_Ext(postgres, "PostgreSQL", "Сессии, игроки, RSVP-статусы")
+    System_Ext(telegram, "Telegram Bot API", "Commands, inline keyboards, callback queries, Mini App entry points")
+    System_Ext(discord, "Discord Gateway and REST API", "Slash commands, button interactions, message edits, ephemeral replies")
+    SystemDb_Ext(postgres, "PostgreSQL", "Sessions, players, participants, groups, platform identities")
 
-    Rel(gm, telegram, "Команды бота (/newsession)")
-    Rel(player, telegram, "Нажимает кнопки (✅ Буду / ❌ Не смогу)")
-    Rel(telegram, gmrelay, "Updates (Long Polling)")
+    Rel(gm, telegram, "Creates and manages sessions")
+    Rel(gm, discord, "Uses /newsession and /listsessions")
+    Rel(player, telegram, "Uses inline buttons")
+    Rel(player, discord, "Uses Join/Leave and RSVP buttons")
+    Rel(telegram, gmrelay, "Updates via long polling")
+    Rel(discord, gmrelay, "Gateway events and component interactions")
     Rel(gmrelay, telegram, "SendMessage, EditMessage, AnswerCallbackQuery")
-    Rel(gmrelay, postgres, "SQL (Npgsql + Dapper)")
+    Rel(gmrelay, discord, "Send/edit schedule, RSVP, reminder, and reschedule messages")
+    Rel(gmrelay, postgres, "SQL via Npgsql and Dapper")
 ```
 
 ## Level 2: Container
@@ -30,49 +35,86 @@ C4Container
     Person(gm, "Game Master")
     Person(player, "Player")
 
-    System_Boundary(pi, "Raspberry Pi 5") {
-        Container(bot, "GmRelay.Bot", "Worker Service, .NET 10 AOT", "Long polling, обработка команд и callback queries, планировщик")
-        ContainerDb(db, "PostgreSQL 16", "Database", "sessions, players, session_participants, game_groups")
+    System_Boundary(runtime, "Docker Compose / Aspire runtime") {
+        Container(bot, "GmRelay.Bot", "Worker Service, .NET 10 AOT", "Telegram long polling, commands, callback routing, reminders")
+        Container(discordBot, "GmRelay.DiscordBot", "Worker Service, .NET 10", "NetCord Gateway, slash commands, scheduler notifications, and button interactions")
+        Container(web, "GmRelay.Web", "Blazor Server", "Dashboard, Mini App pages, editing and stats")
+        Container(shared, "GmRelay.Shared", ".NET library", "Shared domain models, rendering, scheduler, and platform-neutral handlers")
+        ContainerDb(db, "PostgreSQL", "Database", "sessions, players, session_participants, game_groups, platform identities")
     }
 
     System_Ext(telegram, "Telegram Bot API")
+    System_Ext(discord, "Discord Gateway and REST API")
 
     Rel(gm, telegram, "Commands")
-    Rel(player, telegram, "Callback Queries")
-    Rel(telegram, bot, "GetUpdates (Long Polling)")
+    Rel(gm, discord, "Slash commands")
+    Rel(player, telegram, "Callback queries")
+    Rel(player, discord, "Button interactions")
+    Rel(telegram, bot, "GetUpdates")
+    Rel(discord, discordBot, "Gateway events")
     Rel(bot, telegram, "Bot API calls")
+    Rel(discordBot, discord, "REST send/edit/reply calls")
+    Rel(bot, shared, "Uses shared renderers and join/leave handlers")
+    Rel(discordBot, shared, "Uses shared renderers, scheduler, and platform-neutral handlers")
+    Rel(web, shared, "Uses shared domain and rendering models")
     Rel(bot, db, "Npgsql + Dapper.AOT")
+    Rel(discordBot, db, "Npgsql + Dapper")
+    Rel(web, db, "Npgsql + Dapper")
 ```
 
-## Level 3: Component (GmRelay.Bot)
+## Level 3: Component - Session Interactions
 
 ```mermaid
 C4Component
-    title GmRelay.Bot Components
+    title Platform-Neutral Session Interactions
 
-    Container_Boundary(bot, "GmRelay.Bot") {
-        Component(polling, "TelegramBotService", "BackgroundService", "Long polling loop, получает Updates")
-        Component(router, "UpdateRouter", "C#", "Маршрутизирует Update → Handler по типу")
-        Component(scheduler, "SessionSchedulerService", "BackgroundService", "PeriodicTimer(60s): T-24ч и T-5мин триггеры")
-        Component(migrator, "DbMigrator", "DbUp", "SQL миграции при старте")
-
-        Component(confirm, "SendConfirmationHandler", "Feature", "Отправляет inline keyboard за 24ч")
-        Component(rsvp, "HandleRsvpHandler", "Feature", "Обрабатывает ✅/❌, проверяет all-confirmed")
-        Component(link, "SendJoinLinkHandler", "Feature", "Отправляет join link за 5 мин")
+    Container_Boundary(shared, "GmRelay.Shared") {
+        Component(join, "JoinSessionHandler", "Feature handler", "Adds players as Active or Waitlisted with session row locking")
+        Component(leave, "LeaveSessionHandler", "Feature handler", "Removes players and promotes the first waitlisted player when capacity allows")
+        Component(rsvp, "HandleRsvpHandler", "Feature handler", "Updates RSVP state and emits platform-neutral RSVP outcomes")
+        Component(scheduler, "SessionSchedulerService", "Background service", "Triggers confirmation, reminder, and join-link notifications per platform")
+        Component(updateLock, "ScheduleMessageUpdateLock", "In-memory keyed lock", "Serializes DB changes and schedule message edits per platform message")
+        Component(renderer, "SessionBatchViewBuilder", "Renderer model builder", "Builds platform-neutral schedule views and actions")
     }
 
-    System_Ext(telegram, "Telegram Bot API")
-    ContainerDb(db, "PostgreSQL")
+    Container_Boundary(discordBot, "GmRelay.DiscordBot") {
+        Component(discordModule, "DiscordSessionInteractionModule", "NetCord component module", "Maps join_session/leave_session/rsvp buttons to neutral commands")
+        Component(discordMessenger, "DiscordPlatformMessenger", "IPlatformMessenger", "Sends and edits Discord schedule, RSVP, reminder, join-link, and reschedule messages")
+    }
 
-    Rel(polling, router, "Update")
-    Rel(router, rsvp, "CallbackQuery rsvp:*")
-    Rel(scheduler, confirm, "T-24h trigger")
-    Rel(scheduler, link, "T-5min trigger")
-    Rel(confirm, telegram, "SendMessage + InlineKeyboard")
-    Rel(rsvp, telegram, "EditMessage + AnswerCallback")
-    Rel(link, telegram, "SendMessage + user mentions")
-    Rel(confirm, db, "SELECT/UPDATE sessions")
-    Rel(rsvp, db, "UPDATE participants, SELECT counts")
-    Rel(link, db, "SELECT confirmed players")
-    Rel(migrator, db, "DDL migrations")
+    Container_Boundary(bot, "GmRelay.Bot") {
+        Component(updateRouter, "UpdateRouter", "Telegram adapter", "Maps callback queries to neutral commands")
+        Component(telegramMessenger, "TelegramPlatformMessenger", "IPlatformMessenger", "Sends and edits Telegram schedule, RSVP, reminder, join-link, and reschedule messages")
+    }
+
+    ContainerDb(db, "PostgreSQL")
+    System_Ext(telegram, "Telegram Bot API")
+    System_Ext(discord, "Discord Gateway and REST API")
+
+    Rel(discord, discordModule, "Button interaction")
+    Rel(discordModule, join, "JoinSessionCommand")
+    Rel(discordModule, leave, "LeaveSessionCommand")
+    Rel(discordModule, rsvp, "HandleRsvpCommand")
+    Rel(discordModule, discord, "Deferred ephemeral reply, then modify response")
+    Rel(updateRouter, join, "JoinSessionCommand")
+    Rel(updateRouter, leave, "LeaveSessionCommand")
+    Rel(updateRouter, rsvp, "HandleRsvpCommand")
+    Rel(join, updateLock, "Acquire by PlatformMessageRef")
+    Rel(leave, updateLock, "Acquire by PlatformMessageRef")
+    Rel(join, db, "SELECT FOR UPDATE, INSERT participant")
+    Rel(leave, db, "SELECT FOR UPDATE, DELETE/promote participant")
+    Rel(rsvp, db, "Update RSVP and load notification recipients")
+    Rel(scheduler, db, "Load due session triggers")
+    Rel(join, renderer, "Build updated schedule view")
+    Rel(leave, renderer, "Build updated schedule view")
+    Rel(join, discordMessenger, "Update Discord schedule when command is Discord")
+    Rel(leave, discordMessenger, "Update Discord schedule when command is Discord")
+    Rel(join, telegramMessenger, "Update Telegram schedule when command is Telegram")
+    Rel(leave, telegramMessenger, "Update Telegram schedule when command is Telegram")
+    Rel(rsvp, discordMessenger, "Update Discord confirmation and outcomes")
+    Rel(rsvp, telegramMessenger, "Update Telegram confirmation and outcomes")
+    Rel(scheduler, discordMessenger, "Send Discord scheduler notifications")
+    Rel(scheduler, telegramMessenger, "Send Telegram scheduler notifications")
+    Rel(discordMessenger, discord, "REST send/edit/DM + ephemeral text")
+    Rel(telegramMessenger, telegram, "SendMessage/EditMessage + AnswerCallbackQuery")
 ```

docs/plans/2026-05-04-player-list-kick-waitlist.md

@@ -0,0 +1,438 @@
+# Player List + Kick + Waitlist Promotion Implementation Plan
+
+> **For Hermes:** Use subagent-driven-development skill to implement this plan task-by-task.
+
+**Goal:** Add a player list (with names) to the Web UI session views, allow GM to kick a specific player, and auto-promote the next waitlisted player.
+
+**Architecture:** Extend `ISessionStore` with participant queries and a remove method. Update `GroupDetails.razor` to show expandable participant lists. Reuse existing `PromoteWaitlistedPlayerAsync` logic after removal.
+
+**Tech Stack:** C# 14, Blazor SSR, Dapper, PostgreSQL
+
+---
+
+## Task 1: Add domain model for WebParticipant
+
+**Objective:** Create a DTO to represent a session participant in the web layer.
+
+**Files:**
+- Modify: `src/GmRelay.Web/Services/SessionService.cs`
+
+**Step 1: Add record**
+
+```csharp
+public sealed record WebParticipant(
+    Guid Id,
+    long TelegramId,
+    string DisplayName,
+    string? TelegramUsername,
+    string RsvpStatus,
+    string RegistrationStatus,
+    bool IsGm,
+    DateTime? RespondedAt);
+```
+
+**Step 2: Commit**
+
+```bash
+git add src/GmRelay.Web/Services/SessionService.cs
+git commit -m "feat: add WebParticipant record"
+```
+
+---
+
+## Task 2: Add GetSessionParticipantsAsync to ISessionStore
+
+**Objective:** Retrieve all participants for a session with full player info.
+
+**Files:**
+- Modify: `src/GmRelay.Web/Services/ISessionStore.cs`
+- Modify: `src/GmRelay.Web/Services/SessionService.cs`
+- Modify: `src/GmRelay.Web/Services/AuthorizedSessionService.cs`
+
+**Step 1: Add to interface**
+
+In `ISessionStore.cs`, add:
+```csharp
+Task<List<WebParticipant>> GetSessionParticipantsAsync(Guid sessionId);
+```
+
+**Step 2: Implement in SessionService**
+
+In `SessionService.cs`, add:
+```csharp
+public async Task<List<WebParticipant>> GetSessionParticipantsAsync(Guid sessionId)
+{
+    await using var conn = await dataSource.OpenConnectionAsync();
+    return (await conn.QueryAsync<WebParticipant>(
+        """
+        SELECT sp.id AS Id,
+               p.telegram_id AS TelegramId,
+               p.display_name AS DisplayName,
+               p.telegram_username AS TelegramUsername,
+               sp.rsvp_status AS RsvpStatus,
+               sp.registration_status AS RegistrationStatus,
+               sp.is_gm AS IsGm,
+               sp.responded_at AS RespondedAt
+        FROM session_participants sp
+        JOIN players p ON p.id = sp.player_id
+        WHERE sp.session_id = @SessionId
+        ORDER BY sp.is_gm DESC,
+                 CASE sp.registration_status WHEN 'Active' THEN 0 ELSE 1 END,
+                 sp.created_at
+        """,
+        new { SessionId = sessionId })).ToList();
+}
+```
+
+**Step 3: Add authorized wrapper**
+
+In `AuthorizedSessionService.cs`, add:
+```csharp
+public async Task<List<WebParticipant>?> GetSessionParticipantsForGmAsync(Guid sessionId, long gmId)
+{
+    var session = await GetSessionForGmAsync(sessionId, gmId);
+    if (session is null)
+    {
+        return null;
+    }
+
+    return await sessionStore.GetSessionParticipantsAsync(sessionId);
+}
+```
+
+**Step 4: Commit**
+
+```bash
+git add src/GmRelay.Web/Services/ISessionStore.cs
+
+git add src/GmRelay.Web/Services/SessionService.cs
+
+git add src/GmRelay.Web/Services/AuthorizedSessionService.cs
+
+git commit -m "feat: add GetSessionParticipantsAsync"
+```
+
+---
+
+## Task 3: Add RemovePlayerFromSessionAsync with waitlist promotion
+
+**Objective:** Allow GM to remove a specific player; auto-promote next waitlisted player if conditions met.
+
+**Files:**
+- Modify: `src/GmRelay.Web/Services/ISessionStore.cs`
+- Modify: `src/GmRelay.Web/Services/SessionService.cs`
+- Modify: `src/GmRelay.Web/Services/AuthorizedSessionService.cs`
+
+**Step 1: Add to interface**
+
+In `ISessionStore.cs`, add:
+```csharp
+Task RemovePlayerFromSessionAsync(Guid sessionId, Guid groupId, Guid participantId);
+```
+
+**Step 2: Implement in SessionService**
+
+In `SessionService.cs`, add:
+```csharp
+public async Task RemovePlayerFromSessionAsync(Guid sessionId, Guid groupId, Guid participantId)
+{
+    await using var conn = await dataSource.OpenConnectionAsync();
+    await using var transaction = await conn.BeginTransactionAsync();
+
+    var session = await conn.QuerySingleOrDefaultAsync<WebSession>(
+        @"SELECT s.id, s.group_id AS GroupId, s.title, s.scheduled_at AS ScheduledAt, s.status, s.join_link AS JoinLink,
+                 s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
+                 g.telegram_chat_id AS TelegramChatId,
+                 s.max_players AS MaxPlayers,
+                 0 AS ActivePlayerCount,
+                 0 AS WaitlistedPlayerCount,
+                 s.notification_mode AS NotificationMode
+          FROM sessions s
+          JOIN game_groups g ON g.id = s.group_id
+          WHERE s.id = @SessionId AND s.group_id = @GroupId
+          FOR UPDATE",
+        new { SessionId = sessionId, GroupId = groupId },
+        transaction);
+
+    if (session is null)
+    {
+        throw new SessionAccessDeniedException(sessionId, 0);
+    }
+
+    // Verify participant exists in this session
+    var participant = await conn.QuerySingleOrDefaultAsync<WebParticipant>(
+        """
+        SELECT sp.id AS Id,
+               p.telegram_id AS TelegramId,
+               p.display_name AS DisplayName,
+               p.telegram_username AS TelegramUsername,
+               sp.rsvp_status AS RsvpStatus,
+               sp.registration_status AS RegistrationStatus,
+               sp.is_gm AS IsGm,
+               sp.responded_at AS RespondedAt
+        FROM session_participants sp
+        JOIN players p ON p.id = sp.player_id
+        WHERE sp.id = @ParticipantId AND sp.session_id = @SessionId
+        """,
+        new { ParticipantId = participantId, SessionId = sessionId },
+        transaction);
+
+    if (participant is null)
+    {
+        throw new InvalidOperationException("Участник не найден в этой сессии.");
+    }
+
+    bool wasActive = participant.RegistrationStatus == ParticipantRegistrationStatus.Active;
+
+    await conn.ExecuteAsync(
+        "DELETE FROM session_participants WHERE id = @ParticipantId",
+        new { ParticipantId = participantId },
+        transaction);
+
+    WebPromotedParticipantDto? promoted = null;
+
+    if (wasActive)
+    {
+        promoted = await conn.QuerySingleOrDefaultAsync<WebPromotedParticipantDto>(
+            """
+            SELECT sp.id AS ParticipantRowId,
+                   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 = @Waitlisted
+            ORDER BY sp.created_at ASC, sp.id ASC
+            LIMIT 1
+            FOR UPDATE OF sp
+            """,
+            new { SessionId = sessionId, Waitlisted = ParticipantRegistrationStatus.Waitlisted },
+            transaction);
+
+        if (promoted is not null)
+        {
+            await conn.ExecuteAsync(
+                """
+                UPDATE session_participants
+                SET registration_status = @Active,
+                    rsvp_status = @Pending,
+                    responded_at = NULL
+                WHERE id = @ParticipantRowId
+                """,
+                new
+                {
+                    promoted.ParticipantRowId,
+                    Active = ParticipantRegistrationStatus.Active,
+                    Pending = RsvpStatus.Pending
+                },
+                transaction);
+        }
+    }
+
+    await transaction.CommitAsync();
+
+    // Notifications
+    await bot.SendMessage(
+        session.TelegramChatId,
+        $"🚪 <b>{System.Net.WebUtility.HtmlEncode(participant.DisplayName)}</b> удален(а) из сессии «{System.Net.WebUtility.HtmlEncode(session.Title)}».",
+        parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
+
+    if (promoted is not null)
+    {
+        await bot.SendMessage(
+            session.TelegramChatId,
+            $"⬆️ <b>{System.Net.WebUtility.HtmlEncode(promoted.DisplayName)}</b> переведен(а) из листа ожидания в основной состав «{System.Net.WebUtility.HtmlEncode(session.Title)}».",
+            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
+    }
+
+    if (session.BatchMessageId.HasValue)
+    {
+        await TryUpdateBatchMessageAsync(session.BatchId, session.TelegramChatId, session.BatchMessageId.Value, session.Title);
+    }
+}
+```
+
+**Step 3: Add authorized wrapper**
+
+In `AuthorizedSessionService.cs`, add:
+```csharp
+public async Task RemovePlayerFromSessionForGmAsync(Guid sessionId, long gmId, Guid participantId)
+{
+    var session = await GetSessionForGmAsync(sessionId, gmId);
+    if (session is null)
+    {
+        throw new SessionAccessDeniedException(sessionId, gmId);
+    }
+
+    await sessionStore.RemovePlayerFromSessionAsync(sessionId, session.GroupId, participantId);
+}
+```
+
+**Step 4: Commit**
+
+```bash
+git add src/GmRelay.Web/Services/ISessionStore.cs
+
+git add src/GmRelay.Web/Services/SessionService.cs
+
+git add src/GmRelay.Web/Services/AuthorizedSessionService.cs
+
+git commit -m "feat: add RemovePlayerFromSessionAsync with waitlist promotion"
+```
+
+---
+
+## Task 4: Modify GroupDetails.razor to show participant list
+
+**Objective:** Add expandable player lists to each session row with kick buttons.
+
+**Files:**
+- Modify: `src/GmRelay.Web/Components/Pages/GroupDetails.razor`
+
+**Step 1:** Add `participants` dictionary and `kickingParticipantId` state variables.
+
+**Step 2:** Add `LoadParticipants(Guid sessionId)` and `KickParticipant(Guid sessionId, Guid participantId)` methods.
+
+**Step 3:** In desktop table, add a new column or expand row with participant list.
+
+**Step 4:** In mobile cards, add expandable participant section.
+
+**Step 5:** Add styles to `app.css` if needed (badge styles are already present).
+
+**Step 6:** Commit
+
+```bash
+git add src/GmRelay.Web/Components/Pages/GroupDetails.razor
+
+git add src/GmRelay.Web/wwwroot/app.css
+
+git commit -m "feat: show player list and kick button in GroupDetails"
+```
+
+---
+
+## Task 5: Modify EditSession.razor to show participant list
+
+**Objective:** Show participant list on the edit page with kick capability.
+
+**Files:**
+- Modify: `src/GmRelay.Web/Components/Pages/EditSession.razor`
+
+**Step 1:** Load participants in `OnInitializedAsync`.
+
+**Step 2:** Render participant list below the edit form.
+
+**Step 3:** Add kick button for each non-GM participant.
+
+**Step 4:** Commit
+
+```bash
+git add src/GmRelay.Web/Components/Pages/EditSession.razor
+
+git commit -m "feat: show player list and kick button in EditSession"
+```
+
+---
+
+## Task 6: Add backend tests
+
+**Objective:** Cover new GetSessionParticipants and RemovePlayerFromSession logic.
+
+**Files:**
+- Create: `tests/GmRelay.Bot.Tests/Web/SessionParticipantTests.cs`
+
+**Step 1:** Write tests for `GetSessionParticipantsForGmAsync`.
+
+**Step 2:** Write tests for `RemovePlayerFromSessionForGmAsync` including waitlist promotion.
+
+**Step 3:** Run tests
+
+```bash
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj -v n
+```
+
+**Step 4:** Commit
+
+```bash
+git add tests/GmRelay.Bot.Tests/Web/SessionParticipantTests.cs
+
+git commit -m "test: add SessionParticipant service tests"
+```
+
+---
+
+## Task 7: Update README
+
+**Objective:** Bump version and document new features.
+
+**Files:**
+- Modify: `README.md`
+
+**Step 1:** Change version from `v1.9.6` to `v1.9.7`.
+
+**Step 2:** Add bullet under Web Dashboard: player list with kick and auto-promote.
+
+**Step 3:** Commit
+
+```bash
+git add README.md
+
+git commit -m "docs: bump README to v1.9.7, document player list kick"
+```
+
+---
+
+## Task 8: Update Wiki
+
+**Objective:** Update `Руководство ГМа` page with player management instructions.
+
+**Files:**
+- Modify: Wiki page `Руководство ГМа`
+
+**Step 1:** Read current wiki content via MCP.
+
+**Step 2:** Add section about viewing player list and removing players.
+
+**Step 3:** Update via MCP.
+
+---
+
+## Task 9: Push branch and run CI
+
+**Objective:** Push branch, monitor workflow, fix issues.
+
+**Step 1:** Push
+
+```bash
+git push -u origin feat/player-list-kick-waitlist
+```
+
+**Step 2:** Check workflow run via MCP gitea actions.
+
+**Step 3:** Fix any issues.
+
+---
+
+## Task 10: Merge and create release
+
+**Objective:** Merge PR (or fast-forward), tag, create release.
+
+**Step 1:** Merge to main
+
+```bash
+git checkout main
+
+git merge --no-ff feat/player-list-kick-waitlist -m "feat: player list, kick, and waitlist promotion (#X)"
+```
+
+**Step 2:** Tag v1.9.7
+
+```bash
+git tag v1.9.7
+
+git push origin main --tags
+```
+
+**Step 3:** Create release via MCP gitea_create_release.
+
+---

docs/superpowers/plans/2026-05-15-platform-messenger-contracts.md

@@ -0,0 +1,560 @@
+# Platform Messenger Contracts 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:** Implement issue #24 by adding platform-neutral platform identity and messaging contracts, then routing the Telegram session flows through a Telegram adapter without changing Telegram behavior.
+
+**Architecture:** Keep update routing and Telegram update parsing at the `GmRelay.Bot.Infrastructure.Telegram` boundary, but move outbound messaging decisions behind `GmRelay.Shared.Platform.IPlatformMessenger`. `GmRelay.Shared` owns platform-neutral DTOs and contracts; `GmRelay.Bot` owns `TelegramPlatformMessenger`, which translates neutral requests into `Telegram.Bot` calls and reuses the existing Telegram renderers/editing rules.
+
+**Tech Stack:** .NET 10, C# preview, xUnit, Dapper.AOT constraints, Telegram.Bot in `GmRelay.Bot` only, platform-neutral shared contracts in `GmRelay.Shared`.
+
+---
+
+## Issue Context
+
+- Gitea issue: #24, `refactor: ввести PlatformKind, PlatformUser, PlatformGroup и IPlatformMessenger`
+- Labels: `area:bot`, `area:platform`, `area:shared`, `platform:multi`, `type:refactor`, `pending-approval`
+- Acceptance criteria:
+  - New contracts live in a platform-neutral layer.
+  - Telegram flow goes through the adapter without behavior changes.
+  - A future DiscordBot can reference the contract without depending on Telegram assemblies.
+
+## Proposed Version Bump
+
+Current version is `2.0.0` in:
+
+- `Directory.Build.props`
+- `compose.yaml`
+- `.gitea/workflows/deploy.yml`
+- `src/GmRelay.Web/Components/Layout/NavMenu.razor`
+
+Issue label is `type:refactor`; per workflow rules this is not a major bump and has no user-facing feature label. Proposed bump: `2.0.0` -> `2.0.1`.
+
+## Files
+
+- Create: `src/GmRelay.Shared/Platform/PlatformKind.cs`
+- Create: `src/GmRelay.Shared/Platform/PlatformUser.cs`
+- Create: `src/GmRelay.Shared/Platform/PlatformGroup.cs`
+- Create: `src/GmRelay.Shared/Platform/PlatformMessageContracts.cs`
+- Create: `src/GmRelay.Shared/Platform/IPlatformMessenger.cs`
+- Create: `src/GmRelay.Bot/Infrastructure/Telegram/TelegramPlatformMessenger.cs`
+- Create: `tests/GmRelay.Bot.Tests/Platform/PlatformContractsTests.cs`
+- Create: `tests/GmRelay.Bot.Tests/Infrastructure/Telegram/TelegramPlatformMessengerSourceTests.cs`
+- Modify: `src/GmRelay.Bot/Program.cs`
+- Modify: `src/GmRelay.Bot/Features/Notifications/DirectSessionNotificationSender.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/JoinSessionHandler.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/LeaveSessionHandler.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/CancelSessionHandler.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/PromoteWaitlistedPlayerHandler.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/RescheduleSession/InitiateRescheduleHandler.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleVoteHandler.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/RescheduleSession/RescheduleVotingDeadlineService.cs`
+- Modify: `src/GmRelay.Bot/Features/Sessions/ExportCalendar/ExportCalendarHandler.cs`
+- Modify: version files listed above
+
+## Design
+
+### Shared Contracts
+
+`PlatformKind` is a sentinel enum where `Max` is not a sendable platform:
+
+```csharp
+namespace GmRelay.Shared.Platform;
+
+public enum PlatformKind
+{
+    Telegram = 0,
+    Discord = 1,
+    Max = 2
+}
+```
+
+`PlatformUser` and `PlatformGroup` carry external platform identity while keeping current Telegram IDs representable as strings:
+
+```csharp
+namespace GmRelay.Shared.Platform;
+
+public sealed record PlatformUser(
+    PlatformKind Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername);
+
+public sealed record PlatformGroup(
+    PlatformKind Platform,
+    string ExternalGroupId,
+    string DisplayName,
+    string? ExternalChannelId = null,
+    string? ExternalThreadId = null);
+```
+
+Outbound message contracts stay independent of Telegram/Discord SDK types:
+
+```csharp
+using GmRelay.Shared.Rendering;
+
+namespace GmRelay.Shared.Platform;
+
+public sealed record PlatformMessageRef(
+    PlatformKind Platform,
+    string ExternalGroupId,
+    string? ExternalThreadId,
+    string ExternalMessageId);
+
+public sealed record PlatformMessageAction(
+    string Key,
+    string Label,
+    string Payload);
+
+public sealed record PlatformScheduleMessage(
+    PlatformGroup Group,
+    SessionBatchViewModel View,
+    PlatformMessageRef? ExistingMessage,
+    string? ImageReference = null);
+
+public sealed record PlatformPrivateMessage(
+    PlatformUser Recipient,
+    string HtmlText);
+
+public sealed record PlatformInteractionReply(
+    string InteractionId,
+    string Text,
+    bool ShowAlert = false);
+
+public sealed record PlatformCalendarFile(
+    PlatformGroup Group,
+    string FileName,
+    byte[] Content,
+    string CaptionHtml,
+    IReadOnlyList<PlatformMessageAction> Actions);
+```
+
+`IPlatformMessenger` exposes the required outward operations:
+
+```csharp
+namespace GmRelay.Shared.Platform;
+
+public interface IPlatformMessenger
+{
+    Task<PlatformMessageRef> SendScheduleAsync(PlatformScheduleMessage message, CancellationToken ct);
+    Task UpdateScheduleAsync(PlatformScheduleMessage message, CancellationToken ct);
+    Task SendGroupMessageAsync(PlatformGroup group, string htmlText, CancellationToken ct);
+    Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct);
+    Task AnswerInteractionAsync(PlatformInteractionReply reply, CancellationToken ct);
+    Task SendCalendarFileAsync(PlatformCalendarFile file, CancellationToken ct);
+}
+```
+
+### Telegram Adapter
+
+`TelegramPlatformMessenger` lives in `GmRelay.Bot.Infrastructure.Telegram`, depends on `ITelegramBotClient`, and translates neutral DTOs to existing Telegram calls:
+
+- `SendScheduleAsync` renders `SessionBatchViewModel` with `TelegramSessionBatchRenderer.Render`.
+- `UpdateScheduleAsync` calls `BatchMessageEditor.EditBatchMessageAsync`.
+- `SendGroupMessageAsync` calls `SendMessage` with `ParseMode.Html` and optional `messageThreadId`.
+- `SendPrivateMessageAsync` calls `SendMessage` to `PlatformUser.ExternalUserId`.
+- `AnswerInteractionAsync` calls `AnswerCallbackQuery`.
+- `SendCalendarFileAsync` calls `SendDocument` and maps URL actions to inline keyboard buttons.
+
+### Handler Scope
+
+Refactor outbound Telegram calls in these flows to `IPlatformMessenger`:
+
+- Join/leave/promote waitlist schedule updates and callback replies.
+- Cancel schedule update, group cancellation message, direct notification and callback reply.
+- Reschedule initiation, voting message updates, immediate reschedule schedule update, direct notifications and callback replies.
+- Export calendar file sending.
+
+Keep Telegram inbound DTOs at the boundary for now:
+
+- `UpdateRouter` still receives `Telegram.Bot.Types.Update`.
+- Text message parsing in reschedule input still receives `Telegram.Bot.Types.Message`.
+- `CreateSessionHandler` can keep photo/topic creation via `ITelegramBotClient` because issue #24 targets outbound schedule/interaction/private/calendar contract, not replacing all Telegram update primitives in one PR.
+
+## Tasks
+
+### Task 1: RED - Shared Contract Tests
+
+**Files:**
+- Create: `tests/GmRelay.Bot.Tests/Platform/PlatformContractsTests.cs`
+
+- [ ] **Step 1: Write failing tests for neutral contracts**
+
+```csharp
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+
+namespace GmRelay.Bot.Tests.Platform;
+
+public sealed class PlatformContractsTests
+{
+    [Fact]
+    public void PlatformKind_ShouldDefineTelegramDiscordAndMaxSentinel()
+    {
+        Assert.Equal(0, (int)PlatformKind.Telegram);
+        Assert.Equal(1, (int)PlatformKind.Discord);
+        Assert.Equal(2, (int)PlatformKind.Max);
+    }
+
+    [Fact]
+    public void PlatformContracts_ShouldBeTelegramAssemblyFree()
+    {
+        var contractTypes = new[]
+        {
+            typeof(PlatformUser),
+            typeof(PlatformGroup),
+            typeof(PlatformMessageRef),
+            typeof(PlatformMessageAction),
+            typeof(PlatformScheduleMessage),
+            typeof(PlatformPrivateMessage),
+            typeof(PlatformInteractionReply),
+            typeof(PlatformCalendarFile),
+            typeof(IPlatformMessenger)
+        };
+
+        Assert.All(contractTypes, type =>
+            Assert.DoesNotContain(
+                "Telegram",
+                string.Join(" ", type.Assembly.GetReferencedAssemblies().Select(value => value.Name)),
+                StringComparison.OrdinalIgnoreCase));
+    }
+
+    [Fact]
+    public void PlatformScheduleMessage_ShouldCarrySharedViewModelWithoutPlatformTypes()
+    {
+        var sessionId = Guid.Parse("aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa");
+        var view = SessionBatchViewBuilder.Build(
+            "Campaign",
+            [new SessionBatchDto(sessionId, new DateTime(2026, 5, 15, 16, 0, 0, DateTimeKind.Utc), "Planned", 4, "https://example.test/game")],
+            []);
+        var group = new PlatformGroup(PlatformKind.Discord, "guild-1", "Guild", "channel-1", "thread-1");
+
+        var message = new PlatformScheduleMessage(group, view, ExistingMessage: null);
+
+        Assert.Equal(PlatformKind.Discord, message.Group.Platform);
+        Assert.Same(view, message.View);
+    }
+}
+```
+
+- [ ] **Step 2: Run tests and verify RED**
+
+Run:
+
+```powershell
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter PlatformContractsTests
+```
+
+Expected: compile failure because `GmRelay.Shared.Platform` types do not exist.
+
+### Task 2: GREEN - Add Shared Contracts
+
+**Files:**
+- Create: `src/GmRelay.Shared/Platform/PlatformKind.cs`
+- Create: `src/GmRelay.Shared/Platform/PlatformUser.cs`
+- Create: `src/GmRelay.Shared/Platform/PlatformGroup.cs`
+- Create: `src/GmRelay.Shared/Platform/PlatformMessageContracts.cs`
+- Create: `src/GmRelay.Shared/Platform/IPlatformMessenger.cs`
+
+- [ ] **Step 1: Add the contract files exactly as described in the Design section**
+- [ ] **Step 2: Run PlatformContractsTests and verify GREEN**
+
+Run:
+
+```powershell
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter PlatformContractsTests
+```
+
+Expected: `Passed`.
+
+### Task 3: RED - Adapter and Flow Source Tests
+
+**Files:**
+- Create: `tests/GmRelay.Bot.Tests/Infrastructure/Telegram/TelegramPlatformMessengerSourceTests.cs`
+
+- [ ] **Step 1: Write source tests for adapter wiring and target flows**
+
+```csharp
+namespace GmRelay.Bot.Tests.Infrastructure.Telegram;
+
+public sealed class TelegramPlatformMessengerSourceTests
+{
+    [Fact]
+    public async Task Program_ShouldRegisterTelegramPlatformMessenger()
+    {
+        var program = await ReadRepositoryFileAsync("src/GmRelay.Bot/Program.cs");
+
+        Assert.Contains("IPlatformMessenger", program, StringComparison.Ordinal);
+        Assert.Contains("TelegramPlatformMessenger", program, StringComparison.Ordinal);
+    }
+
+    [Theory]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/CreateSession/JoinSessionHandler.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/CreateSession/LeaveSessionHandler.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/CreateSession/CancelSessionHandler.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/CreateSession/PromoteWaitlistedPlayerHandler.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/RescheduleSession/InitiateRescheduleHandler.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleTimeInputHandler.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/RescheduleSession/HandleRescheduleVoteHandler.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/RescheduleSession/RescheduleVotingDeadlineService.cs")]
+    [InlineData("src/GmRelay.Bot/Features/Sessions/ExportCalendar/ExportCalendarHandler.cs")]
+    public async Task SessionFlows_ShouldUsePlatformMessengerForOutboundTelegramWork(string relativePath)
+    {
+        var source = await ReadRepositoryFileAsync(relativePath);
+
+        Assert.Contains("IPlatformMessenger", source, StringComparison.Ordinal);
+        Assert.DoesNotContain("BatchMessageEditor.EditBatchMessageAsync", source, StringComparison.Ordinal);
+        Assert.DoesNotContain(".AnswerCallbackQuery(", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task TelegramPlatformMessenger_ShouldOwnTelegramBotClientCalls()
+    {
+        var source = await ReadRepositoryFileAsync("src/GmRelay.Bot/Infrastructure/Telegram/TelegramPlatformMessenger.cs");
+
+        Assert.Contains("ITelegramBotClient", source, StringComparison.Ordinal);
+        Assert.Contains("BatchMessageEditor.EditBatchMessageAsync", source, StringComparison.Ordinal);
+        Assert.Contains("AnswerCallbackQuery", source, StringComparison.Ordinal);
+        Assert.Contains("SendDocument", source, StringComparison.Ordinal);
+    }
+
+    private static async Task<string> ReadRepositoryFileAsync(string relativePath)
+    {
+        var directory = new DirectoryInfo(AppContext.BaseDirectory);
+        while (directory is not null)
+        {
+            var candidate = Path.Combine(directory.FullName, relativePath);
+            if (File.Exists(candidate))
+            {
+                return await File.ReadAllTextAsync(candidate);
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}
+```
+
+- [ ] **Step 2: Run tests and verify RED**
+
+Run:
+
+```powershell
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter TelegramPlatformMessengerSourceTests
+```
+
+Expected: failures because `TelegramPlatformMessenger` is missing and handlers still call Telegram APIs directly.
+
+### Task 4: GREEN - Implement TelegramPlatformMessenger and Registration
+
+**Files:**
+- Create: `src/GmRelay.Bot/Infrastructure/Telegram/TelegramPlatformMessenger.cs`
+- Modify: `src/GmRelay.Bot/Program.cs`
+
+- [ ] **Step 1: Implement adapter**
+
+Implementation notes:
+
+- Parse Telegram chat/thread/message IDs from neutral string IDs with `long.Parse` and `int.Parse`.
+- Use `ParseMode.Html` for HTML text.
+- Map `PlatformMessageAction` URLs to `InlineKeyboardButton.WithUrl`.
+- Return a `PlatformMessageRef` with message IDs converted to strings.
+
+- [ ] **Step 2: Register adapter**
+
+Add `using GmRelay.Shared.Platform;` and register:
+
+```csharp
+builder.Services.AddSingleton<IPlatformMessenger, TelegramPlatformMessenger>();
+```
+
+- [ ] **Step 3: Run adapter source tests**
+
+Run:
+
+```powershell
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter TelegramPlatformMessengerSourceTests
+```
+
+Expected: some handler source tests still fail until Task 5.
+
+### Task 5: GREEN - Refactor Session Flows Through Adapter
+
+**Files:**
+- Modify target handler files listed in Task 3
+- Modify: `src/GmRelay.Bot/Features/Notifications/DirectSessionNotificationSender.cs`
+
+- [ ] **Step 1: Replace constructor dependencies**
+
+Use `IPlatformMessenger messenger` in target handlers for outbound operations. Keep `ITelegramBotClient` only where the handler still performs inbound Telegram-specific work that is out of scope, such as message deletion or forum topic creation.
+
+- [ ] **Step 2: Convert Telegram IDs to neutral platform objects**
+
+Use helper code equivalent to:
+
+```csharp
+private static PlatformGroup TelegramGroup(long chatId, string? title, int? threadId = null)
+    => new(
+        PlatformKind.Telegram,
+        chatId.ToString(System.Globalization.CultureInfo.InvariantCulture),
+        title ?? "Telegram chat",
+        ExternalChannelId: chatId.ToString(System.Globalization.CultureInfo.InvariantCulture),
+        ExternalThreadId: threadId?.ToString(System.Globalization.CultureInfo.InvariantCulture));
+
+private static PlatformUser TelegramUser(long telegramId, string displayName, string? username = null)
+    => new(
+        PlatformKind.Telegram,
+        telegramId.ToString(System.Globalization.CultureInfo.InvariantCulture),
+        displayName,
+        username);
+```
+
+- [ ] **Step 3: Replace schedule updates**
+
+Build `SessionBatchViewModel` as before, then call:
+
+```csharp
+await messenger.UpdateScheduleAsync(
+    new PlatformScheduleMessage(
+        group,
+        view,
+        new PlatformMessageRef(PlatformKind.Telegram, group.ExternalGroupId, group.ExternalThreadId, messageId.ToString(System.Globalization.CultureInfo.InvariantCulture))),
+    ct);
+```
+
+- [ ] **Step 4: Replace interaction replies**
+
+Use:
+
+```csharp
+await messenger.AnswerInteractionAsync(
+    new PlatformInteractionReply(command.CallbackQueryId, text, showAlert: false),
+    ct);
+```
+
+- [ ] **Step 5: Replace direct notifications**
+
+`DirectSessionNotificationSender` should become a small compatibility service over `IPlatformMessenger`:
+
+```csharp
+await messenger.SendPrivateMessageAsync(
+    new PlatformPrivateMessage(
+        new PlatformUser(PlatformKind.Telegram, recipient.TelegramId.ToString(CultureInfo.InvariantCulture), recipient.DisplayName, null),
+        htmlText),
+    ct);
+```
+
+- [ ] **Step 6: Replace calendar file sending**
+
+`ExportCalendarHandler` builds the same ICS bytes and calls `SendCalendarFileAsync`, preserving the subscription URL button as a `PlatformMessageAction`.
+
+- [ ] **Step 7: Run target source tests**
+
+Run:
+
+```powershell
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter TelegramPlatformMessengerSourceTests
+```
+
+Expected: `Passed`.
+
+### Task 6: Regression Tests
+
+**Files:**
+- Existing tests only unless a compiler failure exposes a missing using or changed behavior.
+
+- [ ] **Step 1: Run rendering and routing tests**
+
+Run:
+
+```powershell
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~Rendering|FullyQualifiedName~Telegram|FullyQualifiedName~RescheduleSession"
+```
+
+Expected: `Passed`.
+
+- [ ] **Step 2: Run all tests**
+
+Run:
+
+```powershell
+dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj
+```
+
+Expected: `Passed`.
+
+- [ ] **Step 3: Build solution**
+
+Run:
+
+```powershell
+dotnet build GM-Relay.slnx
+```
+
+Expected: `Build succeeded` with warnings treated as errors.
+
+### Task 7: Version Bump
+
+**Files:**
+- Modify: `Directory.Build.props`
+- Modify: `compose.yaml`
+- Modify: `.gitea/workflows/deploy.yml`
+- Modify: `src/GmRelay.Web/Components/Layout/NavMenu.razor`
+
+- [ ] **Step 1: Update all four version locations to `2.0.1`**
+- [ ] **Step 2: Verify sync**
+
+Run:
+
+```powershell
+rg -n "2\\.0\\.0|2\\.0\\.1" Directory.Build.props compose.yaml .gitea/workflows/deploy.yml src/GmRelay.Web/Components/Layout/NavMenu.razor
+```
+
+Expected: no `2.0.0` matches in these files and `2.0.1` appears in all required locations.
+
+### Task 8: Documentation Review
+
+**Files:**
+- Review: `README.md`
+- Review: `docs/adr/002-platform-neutral-batch-rendering.md`
+
+- [ ] **Step 1: Check README and ADR for platform contract accuracy**
+- [ ] **Step 2: Update docs if they now misrepresent platform-neutral responsibilities**
+
+Expected likely doc change: README currently lists current version as `v1.15.0`, which is already inconsistent with repo version `2.0.0`. If this PR bumps to `2.0.1`, update that line to `v2.0.1`.
+
+### Task 9: Commit, PR, CI, Review, Merge, Deploy, Release
+
+**Files:**
+- Stage only files intentionally changed for issue #24.
+
+- [ ] **Step 1: Create branch**
+
+```powershell
+git checkout -b codex/refactor/issue-24-platform-messenger
+```
+
+- [ ] **Step 2: Commit**
+
+```powershell
+git add src/GmRelay.Shared/Platform src/GmRelay.Bot tests/GmRelay.Bot.Tests Directory.Build.props compose.yaml .gitea/workflows/deploy.yml src/GmRelay.Web/Components/Layout/NavMenu.razor README.md docs/adr/002-platform-neutral-batch-rendering.md
+git commit -m "refactor: add platform messenger contracts"
+```
+
+- [ ] **Step 3: Push and create PR via Gitea**
+- [ ] **Step 4: Wait for PR CI and fix failures if any**
+- [ ] **Step 5: Run code review subagent and address findings**
+- [ ] **Step 6: Merge PR after CI and review**
+- [ ] **Step 7: Monitor deploy workflow**
+- [ ] **Step 8: Create release `v2.0.1` with Russian release notes**
+- [ ] **Step 9: Close issue #24 with PR and release links**
+
+## Self-Review
+
+- Spec coverage: all issue acceptance criteria map to Shared contracts, Telegram adapter, handler source tests, and build/test verification.
+- Placeholder scan: no `TBD`, `TODO`, or "fill later" placeholders are left in this plan.
+- Type consistency: all snippets use `GmRelay.Shared.Platform`, `PlatformKind.Telegram`, `PlatformMessageRef`, and `IPlatformMessenger` consistently.
+- Scope control: inbound Telegram update parsing remains out of scope; outbound schedule/private/interaction/calendar operations are in scope.

docs/superpowers/plans/2026-05-18-discord-netcord-gateway.md

@@ -0,0 +1,731 @@
+# Discord NetCord Gateway 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 separate `src/GmRelay.DiscordBot` worker that uses NetCord Gateway for Discord slash commands and component interactions while keeping Telegram dependencies isolated in `src/GmRelay.Bot`.
+
+**Architecture:** Create a new .NET worker project that references `GmRelay.ServiceDefaults` and `GmRelay.Shared`, validates `Discord:Token` during startup, registers NetCord gateway/application command/component services, and logs gateway lifecycle events through NetCord gateway handlers. Keep database connectivity aligned with the existing worker by registering the same `ConnectionStrings:gmrelaydb` `NpgsqlDataSource` pattern, but do not move Telegram code or dependencies.
+
+**Tech Stack:** .NET 10 worker, Aspire service defaults, NetCord.Hosting `1.0.0-alpha.489`, Npgsql `10.0.2`, xUnit, Docker Compose, Gitea Actions.
+
+---
+
+## Issue
+
+- Gitea issue: `#26`, `feat: добавить src/GmRelay.DiscordBot на NetCord Gateway`
+- Labels: `type:feature`, `area:discord`, `area:infra`, `platform:discord`, `priority:p1`, `pending-approval`
+- Version bump: minor, `2.1.1` -> `2.2.0`
+- Branch: `feature/issue-26-discord-netcord-gateway`
+
+## Sources Checked
+
+- NetCord application commands guide: `https://netcord.dev/guides/services/application-commands/introduction.html`
+- NetCord intents guide: `https://netcord.dev/guides/events/intents.html`
+- NetCord gateway handler docs: `https://netcord.dev/docs/NetCord.Hosting.Gateway.html`
+- NuGet flat container for `NetCord.Hosting`: latest observed version `1.0.0-alpha.489`
+
+## File Structure
+
+- Create: `src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj` - Discord worker project and package references.
+- Create: `src/GmRelay.DiscordBot/Program.cs` - host composition, token validation, database registration, NetCord service registration.
+- Create: `src/GmRelay.DiscordBot/DiscordOptions.cs` - strongly typed Discord token/options validation.
+- Create: `src/GmRelay.DiscordBot/Infrastructure/Logging/SecretRedactor.cs` - Discord-local startup redaction without referencing the Telegram worker project.
+- Create: `src/GmRelay.DiscordBot/Infrastructure/Logging/DiscordGatewayLifecycleLogger.cs` - NetCord gateway lifecycle handler for ready/connect/resume/disconnect/close/rate-limit events where available.
+- Create: `src/GmRelay.DiscordBot/Dockerfile` - publish and runtime image for the Discord worker.
+- Modify: `GM-Relay.slnx` - include the new project.
+- Modify: `src/GmRelay.AppHost/GmRelay.AppHost.csproj` - reference the Discord worker for Aspire orchestration.
+- Modify: `src/GmRelay.AppHost/Program.cs` - add `discord` project with PostgreSQL reference.
+- Modify: `tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj` - reference the Discord worker project.
+- Create: `tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs` - source-level tests for solution inclusion, Docker/Compose/CI wiring, and Telegram isolation.
+- Create: `tests/GmRelay.Bot.Tests/Discord/DiscordOptionsTests.cs` - unit tests for token validation.
+- Create: `tests/GmRelay.Bot.Tests/Discord/DiscordStartupTests.cs` - source-level startup tests for NetCord registration, service defaults, and PostgreSQL connection requirements.
+- Modify: `compose.yaml` - add `discord` service and versioned image tag.
+- Modify: `.gitea/workflows/deploy.yml` - build/push/scan/pull Discord image and include `DISCORD_BOT_TOKEN` in `.env`.
+- Modify: `.gitea/workflows/pr-checks.yml` - build the Discord project in PR checks.
+- Modify: `Directory.Build.props` - version `2.2.0`.
+- Modify: `src/GmRelay.Web/Components/Layout/NavMenu.razor` - visible version `v2.2.0`.
+- Generated by restore: `src/GmRelay.DiscordBot/packages.lock.json`.
+- Generated by restore: updates to `tests/GmRelay.Bot.Tests/packages.lock.json` and `src/GmRelay.AppHost/packages.lock.json`.
+
+## TDD Plan
+
+### Task 1: Project Presence And Telegram Isolation
+
+**Files:**
+- Create: `tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs`
+- Modify: `GM-Relay.slnx`
+- Create: `src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj`
+- Create: `src/GmRelay.DiscordBot/Program.cs`
+
+- [ ] **Step 1: Write the failing test**
+
+```csharp
+using System;
+using System.IO;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordProjectStructureTests
+{
+    private static string GetRepoRoot()
+    {
+        var dir = AppContext.BaseDirectory;
+        while (!string.IsNullOrEmpty(dir) && !File.Exists(Path.Combine(dir, "Directory.Build.props")))
+        {
+            dir = Directory.GetParent(dir)?.FullName;
+        }
+
+        return dir ?? throw new InvalidOperationException("Could not find repo root");
+    }
+
+    [Fact]
+    public void Solution_ShouldIncludeDiscordWorkerProject()
+    {
+        var repoRoot = GetRepoRoot();
+        var solution = File.ReadAllText(Path.Combine(repoRoot, "GM-Relay.slnx"));
+
+        Assert.Contains("src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj", solution);
+    }
+
+    [Fact]
+    public void DiscordWorkerProject_ShouldExistWithoutTelegramDependency()
+    {
+        var repoRoot = GetRepoRoot();
+        var projectPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "GmRelay.DiscordBot.csproj");
+
+        Assert.True(File.Exists(projectPath), "Discord worker project should exist.");
+
+        var project = File.ReadAllText(projectPath);
+        Assert.Contains("Microsoft.NET.Sdk.Worker", project);
+        Assert.Contains("NetCord.Hosting", project);
+        Assert.Contains("GmRelay.ServiceDefaults.csproj", project);
+        Assert.Contains("GmRelay.Shared.csproj", project);
+        Assert.DoesNotContain("Telegram.Bot", project);
+        Assert.DoesNotContain("GmRelay.Bot.csproj", project);
+    }
+
+    [Fact]
+    public void TelegramWorkerProject_ShouldNotReferenceNetCord()
+    {
+        var repoRoot = GetRepoRoot();
+        var project = File.ReadAllText(Path.Combine(repoRoot, "src", "GmRelay.Bot", "GmRelay.Bot.csproj"));
+
+        Assert.DoesNotContain("NetCord", project, StringComparison.OrdinalIgnoreCase);
+    }
+}
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter FullyQualifiedName~DiscordProjectStructureTests`
+
+Expected: FAIL because `GM-Relay.slnx` does not include `src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj` and the project file does not exist.
+
+- [ ] **Step 3: Write minimal implementation**
+
+Create `src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj`:
+
+```xml
+<Project Sdk="Microsoft.NET.Sdk.Worker">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <LangVersion>preview</LangVersion>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>dotnet-GmRelay.DiscordBot-issue-26</UserSecretsId>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Aspire.Npgsql" Version="13.2.2" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.5" />
+    <PackageReference Include="NetCord.Hosting" Version="1.0.0-alpha.489" />
+    <PackageReference Include="Npgsql" Version="10.0.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\GmRelay.ServiceDefaults\GmRelay.ServiceDefaults.csproj" />
+    <ProjectReference Include="..\GmRelay.Shared\GmRelay.Shared.csproj" />
+  </ItemGroup>
+</Project>
+```
+
+Add this project to `GM-Relay.slnx` inside `/src/`:
+
+```xml
+<Project Path="src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj" />
+```
+
+Create temporary minimal `src/GmRelay.DiscordBot/Program.cs`:
+
+```csharp
+var builder = Host.CreateApplicationBuilder(args);
+builder.AddServiceDefaults();
+await builder.Build().RunAsync();
+```
+
+- [ ] **Step 4: Run the test to verify it passes**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter FullyQualifiedName~DiscordProjectStructureTests`
+
+Expected: PASS.
+
+### Task 2: Token Validation
+
+**Files:**
+- Modify: `tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj`
+- Create: `tests/GmRelay.Bot.Tests/Discord/DiscordOptionsTests.cs`
+- Create: `src/GmRelay.DiscordBot/DiscordOptions.cs`
+
+- [ ] **Step 1: Write the failing test**
+
+Add the project reference to `tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj`:
+
+```xml
+<ProjectReference Include="..\..\src\GmRelay.DiscordBot\GmRelay.DiscordBot.csproj" />
+```
+
+Create `tests/GmRelay.Bot.Tests/Discord/DiscordOptionsTests.cs`:
+
+```csharp
+using GmRelay.DiscordBot;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordOptionsTests
+{
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("   ")]
+    public void Validate_ShouldRejectMissingToken(string? token)
+    {
+        var options = new DiscordOptions { Token = token };
+
+        var exception = Assert.Throws<InvalidOperationException>(options.Validate);
+
+        Assert.Contains("Discord:Token is required", exception.Message);
+        Assert.Contains("Discord__Token", exception.Message);
+    }
+
+    [Fact]
+    public void Validate_ShouldAcceptConfiguredToken()
+    {
+        var options = new DiscordOptions { Token = "configured-token" };
+
+        options.Validate();
+    }
+}
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter FullyQualifiedName~DiscordOptionsTests`
+
+Expected: FAIL at compile time because `GmRelay.DiscordBot.DiscordOptions` is not defined.
+
+- [ ] **Step 3: Write minimal implementation**
+
+Create `src/GmRelay.DiscordBot/DiscordOptions.cs`:
+
+```csharp
+namespace GmRelay.DiscordBot;
+
+public sealed class DiscordOptions
+{
+    public string? Token { get; init; }
+
+    public void Validate()
+    {
+        if (string.IsNullOrWhiteSpace(Token))
+        {
+            throw new InvalidOperationException(
+                "Discord:Token is required. Set via environment variable Discord__Token or user secrets.");
+        }
+    }
+}
+```
+
+- [ ] **Step 4: Run the test to verify it passes**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter FullyQualifiedName~DiscordOptionsTests`
+
+Expected: PASS.
+
+### Task 3: Startup Wiring For Service Defaults, PostgreSQL, NetCord, And Slash Commands
+
+**Files:**
+- Create: `tests/GmRelay.Bot.Tests/Discord/DiscordStartupTests.cs`
+- Modify: `src/GmRelay.DiscordBot/Program.cs`
+
+- [ ] **Step 1: Write the failing test**
+
+Create `tests/GmRelay.Bot.Tests/Discord/DiscordStartupTests.cs`:
+
+```csharp
+using System;
+using System.IO;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordStartupTests
+{
+    private static string GetRepoRoot()
+    {
+        var dir = AppContext.BaseDirectory;
+        while (!string.IsNullOrEmpty(dir) && !File.Exists(Path.Combine(dir, "Directory.Build.props")))
+        {
+            dir = Directory.GetParent(dir)?.FullName;
+        }
+
+        return dir ?? throw new InvalidOperationException("Could not find repo root");
+    }
+
+    [Fact]
+    public void Program_ShouldValidateDiscordTokenBeforeRunning()
+    {
+        var program = ReadProgram();
+
+        Assert.Contains("GetRequiredSection(\"Discord\")", program);
+        Assert.Contains("DiscordOptions", program);
+        Assert.Contains(".Validate()", program);
+    }
+
+    [Fact]
+    public void Program_ShouldRegisterServiceDefaultsAndPostgresDataSource()
+    {
+        var program = ReadProgram();
+
+        Assert.Contains("builder.AddServiceDefaults()", program);
+        Assert.Contains("ConnectionStrings:gmrelaydb is required", program);
+        Assert.Contains("NpgsqlDataSource", program);
+        Assert.Contains("SecretRedactor.RedactConnectionString", program);
+    }
+
+    [Fact]
+    public void Program_ShouldRegisterNetCordGatewayApplicationCommandsAndComponents()
+    {
+        var program = ReadProgram();
+
+        Assert.Contains(".AddDiscordGateway", program);
+        Assert.Contains(".AddApplicationCommands", program);
+        Assert.Contains(".AddComponentInteractions", program);
+        Assert.Contains(".AddGatewayHandlers", program);
+        Assert.Contains("AddSlashCommand", program);
+    }
+
+    private static string ReadProgram()
+    {
+        var repoRoot = GetRepoRoot();
+        return File.ReadAllText(Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Program.cs"));
+    }
+}
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter FullyQualifiedName~DiscordStartupTests`
+
+Expected: FAIL because `Program.cs` does not validate `Discord:Token`, register `NpgsqlDataSource`, or register NetCord services yet.
+
+- [ ] **Step 3: Write minimal implementation**
+
+Replace `src/GmRelay.DiscordBot/Program.cs` with host composition that:
+
+```csharp
+using GmRelay.DiscordBot;
+using GmRelay.DiscordBot.Infrastructure.Logging;
+using NetCord.Gateway;
+using NetCord.Hosting.Gateway;
+using NetCord.Hosting.Services.ApplicationCommands;
+using NetCord.Hosting.Services.ComponentInteractions;
+using Npgsql;
+
+var builder = Host.CreateApplicationBuilder(args);
+
+builder.AddServiceDefaults();
+
+var discordOptions = builder.Configuration
+    .GetRequiredSection("Discord")
+    .Get<DiscordOptions>() ?? new DiscordOptions();
+discordOptions.Validate();
+
+builder.Services.AddSingleton(discordOptions);
+
+builder.Services.AddSingleton<NpgsqlDataSource>(sp =>
+{
+    var config = sp.GetRequiredService<IConfiguration>();
+    var loggerFactory = sp.GetRequiredService<ILoggerFactory>();
+    var connectionString = config.GetConnectionString("gmrelaydb")
+        ?? throw new InvalidOperationException(
+            "ConnectionStrings:gmrelaydb is required. Set via environment variable ConnectionStrings__gmrelaydb.");
+
+    var logger = loggerFactory.CreateLogger("GmRelay.DiscordBot.Startup");
+    logger.LogInformation(
+        "Configured PostgreSQL data source with connection string {ConnectionString}",
+        SecretRedactor.RedactConnectionString(connectionString));
+
+    return NpgsqlDataSource.Create(connectionString);
+});
+
+builder.Services
+    .AddDiscordGateway(options =>
+    {
+        options.Token = discordOptions.Token;
+        options.Intents = GatewayIntents.Guilds;
+    })
+    .AddApplicationCommands()
+    .AddComponentInteractions()
+    .AddGatewayHandlers(typeof(Program).Assembly);
+
+var host = builder.Build();
+
+host.AddSlashCommand("ping", "Checks whether GM-Relay Discord is online.", () => "Pong!");
+
+await host.RunAsync();
+```
+
+Use the Discord-local `SecretRedactor` namespace instead of `GmRelay.Bot.Infrastructure.Logging` so the new project does not reference the Telegram worker.
+
+Create `src/GmRelay.DiscordBot/Infrastructure/Logging/SecretRedactor.cs`:
+
+```csharp
+using System.Text.RegularExpressions;
+
+namespace GmRelay.DiscordBot.Infrastructure.Logging;
+
+internal static partial class SecretRedactor
+{
+    public static string RedactConnectionString(string connectionString)
+    {
+        return PasswordPattern().Replace(connectionString, "$1***");
+    }
+
+    [GeneratedRegex(@"(?i)(Password\s*=\s*)[^;]+")]
+    private static partial Regex PasswordPattern();
+}
+```
+
+If `GatewayClientOptions.Token` does not accept `string`, adjust to NetCord's required token type after compile feedback while preserving the tests' intent.
+
+- [ ] **Step 4: Run the test to verify it passes**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter FullyQualifiedName~DiscordStartupTests`
+
+Expected: PASS.
+
+### Task 4: Gateway Lifecycle Logging
+
+**Files:**
+- Modify: `tests/GmRelay.Bot.Tests/Discord/DiscordStartupTests.cs`
+- Create: `src/GmRelay.DiscordBot/Infrastructure/Logging/DiscordGatewayLifecycleLogger.cs`
+
+- [ ] **Step 1: Write the failing test**
+
+Add to `DiscordStartupTests.cs`:
+
+```csharp
+[Fact]
+public void LifecycleLogger_ShouldLogGatewayLifecycleEventsWithoutTokenValues()
+{
+    var repoRoot = GetRepoRoot();
+    var loggerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Infrastructure", "Logging", "DiscordGatewayLifecycleLogger.cs");
+
+    Assert.True(File.Exists(loggerPath), "Discord gateway lifecycle logger should exist.");
+
+    var logger = File.ReadAllText(loggerPath);
+    Assert.Contains("IReadyGatewayHandler", logger);
+    Assert.Contains("IDisconnectGatewayHandler", logger);
+    Assert.Contains("IResumeGatewayHandler", logger);
+    Assert.Contains("LogInformation", logger);
+    Assert.DoesNotContain("Token", logger);
+}
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter LifecycleLogger_ShouldLogGatewayLifecycleEventsWithoutTokenValues`
+
+Expected: FAIL because `DiscordGatewayLifecycleLogger.cs` does not exist.
+
+- [ ] **Step 3: Write minimal implementation**
+
+Create `src/GmRelay.DiscordBot/Infrastructure/Logging/DiscordGatewayLifecycleLogger.cs` using the concrete NetCord handler signatures from the installed `NetCord.Hosting` package. Minimum behavior:
+
+```csharp
+using Microsoft.Extensions.Logging;
+using NetCord.Gateway;
+using NetCord.Hosting.Gateway;
+
+namespace GmRelay.DiscordBot.Infrastructure.Logging;
+
+public sealed class DiscordGatewayLifecycleLogger(
+    ILogger<DiscordGatewayLifecycleLogger> logger)
+    : IReadyGatewayHandler,
+      IDisconnectGatewayHandler,
+      IResumeGatewayHandler
+{
+    public ValueTask HandleAsync(ReadyEventArgs arg)
+    {
+        logger.LogInformation("Discord gateway ready as application {ApplicationId}", arg.Application.Id);
+        return ValueTask.CompletedTask;
+    }
+
+    public ValueTask HandleAsync(DisconnectEventArgs arg)
+    {
+        logger.LogWarning("Discord gateway disconnected with close status {CloseStatus}", arg.CloseStatus);
+        return ValueTask.CompletedTask;
+    }
+
+    public ValueTask HandleAsync()
+    {
+        logger.LogInformation("Discord gateway session resumed");
+        return ValueTask.CompletedTask;
+    }
+}
+```
+
+If interface signatures differ in `1.0.0-alpha.489`, inspect the package XML/docs and adjust the handlers to compile while keeping ready/disconnect/resume logging and never logging token values.
+
+- [ ] **Step 4: Run the test to verify it passes**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter LifecycleLogger_ShouldLogGatewayLifecycleEventsWithoutTokenValues`
+
+Expected: PASS.
+
+### Task 5: Runtime Container, Compose, AppHost, And CI Wiring
+
+**Files:**
+- Modify: `tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs`
+- Create: `src/GmRelay.DiscordBot/Dockerfile`
+- Modify: `compose.yaml`
+- Modify: `src/GmRelay.AppHost/GmRelay.AppHost.csproj`
+- Modify: `src/GmRelay.AppHost/Program.cs`
+- Modify: `.gitea/workflows/pr-checks.yml`
+- Modify: `.gitea/workflows/deploy.yml`
+
+- [ ] **Step 1: Write the failing test**
+
+Add to `DiscordProjectStructureTests.cs`:
+
+```csharp
+[Fact]
+public void RuntimeWiring_ShouldIncludeDiscordServiceWithoutCouplingTelegram()
+{
+    var repoRoot = GetRepoRoot();
+    var compose = File.ReadAllText(Path.Combine(repoRoot, "compose.yaml"));
+    var appHostProject = File.ReadAllText(Path.Combine(repoRoot, "src", "GmRelay.AppHost", "GmRelay.AppHost.csproj"));
+    var appHostProgram = File.ReadAllText(Path.Combine(repoRoot, "src", "GmRelay.AppHost", "Program.cs"));
+    var prChecks = File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "pr-checks.yml"));
+    var deploy = File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml"));
+
+    Assert.Contains("gmrelay-discord-bot:2.2.0", compose);
+    Assert.Contains("Discord__Token=${DISCORD_BOT_TOKEN:?Set DISCORD_BOT_TOKEN in .env}", compose);
+    Assert.Contains("src/GmRelay.DiscordBot/Dockerfile", deploy);
+    Assert.Contains("DISCORD_BOT_TOKEN", deploy);
+    Assert.Contains("dotnet build src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj --no-restore", prChecks);
+    Assert.Contains("GmRelay.DiscordBot.csproj", appHostProject);
+    Assert.Contains("Projects.GmRelay_DiscordBot", appHostProgram);
+}
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter RuntimeWiring_ShouldIncludeDiscordServiceWithoutCouplingTelegram`
+
+Expected: FAIL because runtime wiring is not present.
+
+- [ ] **Step 3: Write minimal implementation**
+
+Create `src/GmRelay.DiscordBot/Dockerfile` modeled after `src/GmRelay.Bot/Dockerfile`, with project copy/restore for `GmRelay.DiscordBot`, `GmRelay.ServiceDefaults`, and `GmRelay.Shared`, and entrypoint `./GmRelay.DiscordBot`.
+
+Add `discord` service to `compose.yaml`:
+
+```yaml
+  discord:
+    image: git.codeanddice.ru/toutsu/gmrelay-discord-bot:2.2.0
+    restart: always
+    depends_on:
+      db:
+        condition: service_healthy
+    environment:
+      - "ConnectionStrings__gmrelaydb=Host=db;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}"
+      - "Discord__Token=${DISCORD_BOT_TOKEN:?Set DISCORD_BOT_TOKEN in .env}"
+    networks:
+      - gmrelay
+```
+
+Add Discord project reference to `src/GmRelay.AppHost/GmRelay.AppHost.csproj`:
+
+```xml
+<ProjectReference Include="..\GmRelay.DiscordBot\GmRelay.DiscordBot.csproj" />
+```
+
+Add Discord service to `src/GmRelay.AppHost/Program.cs`:
+
+```csharp
+builder.AddProject<Projects.GmRelay_DiscordBot>("discord")
+    .WithReference(postgres)
+    .WaitFor(postgres);
+```
+
+Update `.gitea/workflows/pr-checks.yml` with:
+
+```yaml
+      - name: Build Discord Bot (compile check, includes SAST)
+        run: dotnet build src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj --no-restore
+```
+
+Update `.gitea/workflows/deploy.yml` to build, push, scan, pull, and deploy `git.codeanddice.ru/toutsu/gmrelay-discord-bot:${{ env.VERSION }}` and write `DISCORD_BOT_TOKEN=${{ secrets.DISCORD_BOT_TOKEN }}` to `.env`.
+
+- [ ] **Step 4: Run the test to verify it passes**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter RuntimeWiring_ShouldIncludeDiscordServiceWithoutCouplingTelegram`
+
+Expected: PASS.
+
+### Task 6: Version Synchronization
+
+**Files:**
+- Modify: `tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs`
+- Modify: `Directory.Build.props`
+- Modify: `compose.yaml`
+- Modify: `.gitea/workflows/deploy.yml`
+- Modify: `src/GmRelay.Web/Components/Layout/NavMenu.razor`
+
+- [ ] **Step 1: Write the failing test**
+
+Add to `DiscordProjectStructureTests.cs`:
+
+```csharp
+[Fact]
+public void Version_ShouldBeSynchronizedForDiscordFeatureRelease()
+{
+    var repoRoot = GetRepoRoot();
+
+    Assert.Contains("<Version>2.2.0</Version>", File.ReadAllText(Path.Combine(repoRoot, "Directory.Build.props")));
+    Assert.Contains("VERSION: 2.2.0", File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml")));
+    Assert.Contains("gmrelay-bot:2.2.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+    Assert.Contains("gmrelay-web:2.2.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+    Assert.Contains("gmrelay-discord-bot:2.2.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+    Assert.Contains("v2.2.0", File.ReadAllText(Path.Combine(repoRoot, "src", "GmRelay.Web", "Components", "Layout", "NavMenu.razor")));
+}
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter Version_ShouldBeSynchronizedForDiscordFeatureRelease`
+
+Expected: FAIL because current version is `2.1.1`.
+
+- [ ] **Step 3: Write minimal implementation**
+
+Update:
+- `Directory.Build.props`: `<Version>2.2.0</Version>`
+- `.gitea/workflows/deploy.yml`: `VERSION: 2.2.0`
+- `compose.yaml`: `gmrelay-bot:2.2.0`, `gmrelay-web:2.2.0`, `gmrelay-discord-bot:2.2.0`
+- `src/GmRelay.Web/Components/Layout/NavMenu.razor`: `v2.2.0`
+
+- [ ] **Step 4: Run the test to verify it passes**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter Version_ShouldBeSynchronizedForDiscordFeatureRelease`
+
+Expected: PASS.
+
+### Task 7: Restore, Format, Build, And Full Test Verification
+
+**Files:**
+- Generated/updated: `src/GmRelay.DiscordBot/packages.lock.json`
+- Generated/updated: `tests/GmRelay.Bot.Tests/packages.lock.json`
+- Generated/updated: `src/GmRelay.AppHost/packages.lock.json`
+- Any code formatting changes required by `dotnet format`
+
+- [ ] **Step 1: Restore lock files**
+
+Run: `dotnet restore GM-Relay.slnx`
+
+Expected: restore succeeds and creates/updates lock files for the new project references and NetCord dependency.
+
+- [ ] **Step 2: Run targeted tests**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter FullyQualifiedName~Discord`
+
+Expected: all Discord tests pass.
+
+- [ ] **Step 3: Run full tests**
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --verbosity normal`
+
+Expected: all tests pass.
+
+- [ ] **Step 4: Run release build**
+
+Run: `dotnet build GM-Relay.slnx -c Release`
+
+Expected: solution build succeeds and includes `src/GmRelay.DiscordBot`.
+
+- [ ] **Step 5: Run format check**
+
+Run: `dotnet format --verify-no-changes --verbosity diagnostic`
+
+Expected: no formatting changes required.
+
+- [ ] **Step 6: Inspect diff for secrets**
+
+Run: `git diff --check`
+
+Expected: no whitespace errors and no Discord token value in tracked files.
+
+Run: `git diff -- . ':!*.lock.json'`
+
+Expected: diff contains configuration variable names such as `Discord__Token` and `DISCORD_BOT_TOKEN`, but not a real token value.
+
+### Task 8: Commit, PR, CI, Deploy, Release, Issue Closure
+
+**Files:**
+- All intended implementation, test, lock, workflow, compose, and version files.
+
+- [ ] **Step 1: Create commit**
+
+Run:
+
+```powershell
+git status --short
+git add GM-Relay.slnx Directory.Build.props compose.yaml .gitea/workflows/deploy.yml .gitea/workflows/pr-checks.yml src/GmRelay.AppHost src/GmRelay.DiscordBot src/GmRelay.Web/Components/Layout/NavMenu.razor tests/GmRelay.Bot.Tests
+git commit -m "feat: add Discord NetCord gateway worker"
+```
+
+Expected: only intended files are staged and committed. Do not stage untracked `CLAUDE.md`.
+
+- [ ] **Step 2: Push branch and open PR**
+
+Run: `git push -u origin feature/issue-26-discord-netcord-gateway`
+
+Create Gitea PR to `main` with:
+- Summary of Discord worker, token validation, runtime wiring, and version bump.
+- Test plan showing targeted Discord tests, full tests, release build, format, and secret diff inspection.
+- Link to issue `#26`.
+
+- [ ] **Step 3: Store Discord token as a Gitea Actions secret**
+
+Use Gitea Actions configuration to create or update repository secret `DISCORD_BOT_TOKEN` with the user-provided Discord bot token.
+
+Expected: token is stored only as an Actions secret. The token value is not written to source files, plan files, logs, PR text, release notes, or commits.
+
+- [ ] **Step 4: Monitor CI**
+
+Use Gitea Actions run reads until PR checks finish. If CI fails, inspect logs, fix with TDD where the failure is code behavior, push again, and re-check.
+
+- [ ] **Step 5: Review, merge, deploy, release**
+
+After CI passes and review is approved:
+- Merge PR.
+- Monitor deploy workflow on `main`.
+- Create release `v2.2.0` with Russian release notes.
+- Close issue `#26` with a comment linking PR and release.
+
+## Self-Review
+
+- Spec coverage: Project creation, NetCord Gateway, slash/component service registration, `Discord__Token`, PostgreSQL service defaults, lifecycle logging, Telegram isolation, solution build, compose/deploy integration, and version sync are covered.
+- Placeholder scan: No task uses `TBD`, `TODO`, or an unspecified "add tests" instruction.
+- Type consistency: Test class names and file paths are consistent across tasks; NetCord lifecycle handler signatures are explicitly marked for compile-driven adjustment because the package is prerelease and must be verified against installed `1.0.0-alpha.489`.

docs/superpowers/plans/2026-05-18-platform-neutral-join-leave.md

@@ -0,0 +1,599 @@
+# Platform-Neutral Join Leave 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:** Implement Gitea issue #25 by making join/leave session interactions use platform-neutral command models while preserving Telegram callback behavior, seat limits, and waitlist semantics.
+
+**Architecture:** Telegram callback routing remains in `UpdateRouter`, but it becomes an adapter that converts callback data into `PlatformUser`, `PlatformGroup`, and `PlatformMessageRef` values. `JoinSessionHandler` and `LeaveSessionHandler` operate on those neutral values, persist players by `(platform, external_user_id)`, and update schedules through `IPlatformMessenger`.
+
+**Tech Stack:** .NET 10, xUnit, Dapper, Npgsql, Gitea Actions.
+
+---
+
+## Issue Context
+
+- Issue: `#25 refactor: obobshchit JoinSession i LeaveSession pod platform-neutral interactions`
+- Labels: `area:bot`, `area:platform`, `area:shared`, `platform:multi`, `type:refactor`
+- Version bump: patch, `2.1.0` -> `2.1.1`. The issue is labeled refactor, not breaking; do not use a major bump without explicit approval.
+- Existing untracked file: `CLAUDE.md`; do not stage or modify it.
+
+## File Map
+
+- Create: `tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/PlatformNeutralSessionInteractionCommandTests.cs`
+  - Reflection tests proving join/leave command records expose neutral properties and no Telegram-specific identity/message fields.
+- Create: `tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/PlatformNeutralSessionInteractionSqlTests.cs`
+  - Source-level regression tests for handler SQL and messenger boundaries.
+- Modify: `tests/GmRelay.Bot.Tests/Infrastructure/Database/PlatformIdentityMigrationTests.cs`
+  - Add a migration test for nullable legacy `players.telegram_id`, required for non-Telegram player inserts.
+- Create: `src/GmRelay.Bot/Migrations/V017__allow_platform_neutral_players.sql`
+  - Drop `NOT NULL` from legacy Telegram-only player columns.
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/JoinSessionHandler.cs`
+  - Change `JoinSessionCommand` to neutral properties and query/upsert players by platform identity.
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/LeaveSessionHandler.cs`
+  - Change `LeaveSessionCommand` to neutral properties and find participants by platform identity.
+- Modify: `src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs`
+  - Convert Telegram callback data into neutral command values using `TelegramPlatformIds`.
+- Modify: version files after implementation:
+  - `Directory.Build.props`
+  - `compose.yaml`
+  - `.gitea/workflows/deploy.yml`
+  - `src/GmRelay.Web/Components/Layout/NavMenu.razor`
+
+## Task 1: RED - Command Model Tests
+
+**Files:**
+- Create: `tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/PlatformNeutralSessionInteractionCommandTests.cs`
+
+- [ ] **Step 1: Write failing command-shape tests**
+
+```csharp
+using GmRelay.Bot.Features.Sessions.CreateSession;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.CreateSession;
+
+public sealed class PlatformNeutralSessionInteractionCommandTests
+{
+    [Fact]
+    public void JoinSessionCommand_ShouldExposePlatformNeutralInteractionContext()
+    {
+        AssertProperty<JoinSessionCommand>("SessionId", typeof(Guid));
+        AssertProperty<JoinSessionCommand>("User", typeof(PlatformUser));
+        AssertProperty<JoinSessionCommand>("InteractionId", typeof(string));
+        AssertProperty<JoinSessionCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<JoinSessionCommand>("ScheduleMessage", typeof(PlatformMessageRef));
+        AssertNoTelegramSpecificProperties<JoinSessionCommand>();
+    }
+
+    [Fact]
+    public void LeaveSessionCommand_ShouldExposePlatformNeutralInteractionContext()
+    {
+        AssertProperty<LeaveSessionCommand>("SessionId", typeof(Guid));
+        AssertProperty<LeaveSessionCommand>("User", typeof(PlatformUser));
+        AssertProperty<LeaveSessionCommand>("InteractionId", typeof(string));
+        AssertProperty<LeaveSessionCommand>("Group", typeof(PlatformGroup));
+        AssertProperty<LeaveSessionCommand>("ScheduleMessage", typeof(PlatformMessageRef));
+        AssertNoTelegramSpecificProperties<LeaveSessionCommand>();
+    }
+
+    private static void AssertProperty<T>(string name, Type expectedType)
+    {
+        var property = Assert.Single(typeof(T).GetProperties(), property => property.Name == name);
+
+        Assert.Equal(expectedType, property.PropertyType);
+    }
+
+    private static void AssertNoTelegramSpecificProperties<T>()
+    {
+        var names = typeof(T).GetProperties().Select(property => property.Name).ToArray();
+
+        Assert.DoesNotContain(names, name => name.Contains("Telegram", StringComparison.Ordinal));
+        Assert.DoesNotContain("ChatId", names);
+        Assert.DoesNotContain("MessageId", names);
+        Assert.DoesNotContain("TelegramUserId", names);
+        Assert.DoesNotContain("TelegramUsername", names);
+    }
+}
+```
+
+- [ ] **Step 2: Verify RED**
+
+Run:
+
+```powershell
+dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter PlatformNeutralSessionInteractionCommandTests
+```
+
+Expected: FAIL because `JoinSessionCommand` and `LeaveSessionCommand` still expose `TelegramUserId`, `ChatId`, and `MessageId`, and do not expose `User`, `Group`, or `ScheduleMessage`.
+
+## Task 2: RED - SQL and Boundary Tests
+
+**Files:**
+- Create: `tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/PlatformNeutralSessionInteractionSqlTests.cs`
+- Modify: `tests/GmRelay.Bot.Tests/Infrastructure/Database/PlatformIdentityMigrationTests.cs`
+
+- [ ] **Step 1: Write failing handler source tests**
+
+```csharp
+namespace GmRelay.Bot.Tests.Features.Sessions.CreateSession;
+
+public sealed class PlatformNeutralSessionInteractionSqlTests
+{
+    [Fact]
+    public async Task JoinSessionHandler_ShouldPersistPlayersByPlatformIdentity()
+    {
+        var handler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/JoinSessionHandler.cs");
+
+        Assert.Contains("platform, external_user_id", handler, StringComparison.Ordinal);
+        Assert.Contains("ON CONFLICT (platform, external_user_id)", handler, StringComparison.Ordinal);
+        Assert.Contains("ExternalUserId", handler, StringComparison.Ordinal);
+        Assert.Contains("ExternalUsername", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("TelegramPlatformIds.", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("command.TelegramUserId", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("command.TelegramUsername", handler, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task LeaveSessionHandler_ShouldFindParticipantsByPlatformIdentity()
+    {
+        var handler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/LeaveSessionHandler.cs");
+
+        Assert.Contains("p.platform = @Platform", handler, StringComparison.Ordinal);
+        Assert.Contains("p.external_user_id = @ExternalUserId", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("p.telegram_id = @TelegramUserId", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("TelegramPlatformIds.", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("command.TelegramUserId", handler, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task SessionInteractionHandlers_ShouldUpdateSchedulesThroughCommandMessageReference()
+    {
+        var joinHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/JoinSessionHandler.cs");
+        var leaveHandler = await ReadRepositoryFileAsync("src/GmRelay.Bot/Features/Sessions/CreateSession/LeaveSessionHandler.cs");
+
+        Assert.Contains("new PlatformScheduleMessage(", joinHandler, StringComparison.Ordinal);
+        Assert.Contains("command.Group", joinHandler, StringComparison.Ordinal);
+        Assert.Contains("command.ScheduleMessage", joinHandler, StringComparison.Ordinal);
+        Assert.Contains("new PlatformScheduleMessage(", leaveHandler, StringComparison.Ordinal);
+        Assert.Contains("command.Group", leaveHandler, StringComparison.Ordinal);
+        Assert.Contains("command.ScheduleMessage", leaveHandler, StringComparison.Ordinal);
+    }
+
+    private static async Task<string> ReadRepositoryFileAsync(string relativePath)
+    {
+        var directory = new DirectoryInfo(AppContext.BaseDirectory);
+        while (directory is not null)
+        {
+            var candidate = Path.Combine(directory.FullName, relativePath);
+            if (File.Exists(candidate))
+            {
+                return await File.ReadAllTextAsync(candidate);
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{relativePath}'.");
+    }
+}
+```
+
+- [ ] **Step 2: Add failing migration assertion**
+
+Append to `PlatformIdentityMigrationTests`:
+
+```csharp
+[Fact]
+public async Task MigrationV017_ShouldAllowPlayersWithoutLegacyTelegramId()
+{
+    var migration = await ReadRepositoryFileAsync("src/GmRelay.Bot/Migrations/V017__allow_platform_neutral_players.sql");
+
+    Assert.Contains("ALTER TABLE players", migration, StringComparison.Ordinal);
+    Assert.Contains("telegram_id DROP NOT NULL", migration, StringComparison.Ordinal);
+}
+```
+
+- [ ] **Step 3: Verify RED**
+
+Run:
+
+```powershell
+dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter "PlatformNeutralSessionInteractionSqlTests|MigrationV017_ShouldAllowPlayersWithoutLegacyTelegramId"
+```
+
+Expected: FAIL because handlers still use Telegram-specific properties and the V017 migration file does not exist.
+
+## Task 3: GREEN - Add Migration
+
+**Files:**
+- Create: `src/GmRelay.Bot/Migrations/V017__allow_platform_neutral_players.sql`
+
+- [ ] **Step 1: Create the migration**
+
+```sql
+-- =============================================================
+-- V017: Allow platform-neutral players
+-- =============================================================
+-- Legacy Telegram identity columns remain for backward compatibility,
+-- but non-Telegram platform users do not have Telegram ids.
+-- =============================================================
+
+ALTER TABLE players
+    ALTER COLUMN telegram_id DROP NOT NULL;
+```
+
+- [ ] **Step 2: Verify migration test turns green**
+
+Run:
+
+```powershell
+dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter MigrationV017_ShouldAllowPlayersWithoutLegacyTelegramId
+```
+
+Expected: PASS.
+
+## Task 4: GREEN - Refactor JoinSessionCommand and Handler
+
+**Files:**
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/JoinSessionHandler.cs`
+
+- [ ] **Step 1: Replace command record**
+
+Replace the existing `JoinSessionCommand` declaration with:
+
+```csharp
+public sealed record JoinSessionCommand(
+    Guid SessionId,
+    PlatformUser User,
+    string InteractionId,
+    PlatformGroup Group,
+    PlatformMessageRef ScheduleMessage);
+```
+
+- [ ] **Step 2: Replace player upsert**
+
+Use platform identity parameters:
+
+```csharp
+var platform = command.User.Platform.ToString();
+var legacyTelegramId = command.User.Platform == PlatformKind.Telegram
+    ? long.Parse(command.User.ExternalUserId, CultureInfo.InvariantCulture)
+    : (long?)null;
+var legacyTelegramUsername = command.User.Platform == PlatformKind.Telegram
+    ? command.User.ExternalUsername
+    : null;
+
+var playerId = await connection.ExecuteScalarAsync<Guid>(
+    @"INSERT INTO players (telegram_id, display_name, telegram_username, platform, external_user_id, external_username)
+      VALUES (@LegacyTelegramId, @Name, @LegacyTelegramUsername, @Platform, @ExternalUserId, @ExternalUsername)
+      ON CONFLICT (platform, external_user_id)
+      WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
+      DO UPDATE
+      SET display_name = EXCLUDED.display_name,
+          telegram_username = COALESCE(EXCLUDED.telegram_username, players.telegram_username),
+          platform = EXCLUDED.platform,
+          external_user_id = EXCLUDED.external_user_id,
+          external_username = EXCLUDED.external_username
+      RETURNING id;",
+    new
+    {
+        LegacyTelegramId = legacyTelegramId,
+        Name = command.User.DisplayName,
+        LegacyTelegramUsername = legacyTelegramUsername,
+        Platform = platform,
+        command.User.ExternalUserId,
+        command.User.ExternalUsername
+    },
+    transaction);
+```
+
+Add `using System.Globalization;` at the top.
+
+- [ ] **Step 3: Update participant display query**
+
+Change the participant projection to prefer platform-neutral username:
+
+```sql
+COALESCE(p.external_username, p.telegram_username) as TelegramUsername
+```
+
+- [ ] **Step 4: Update schedule message and interaction reply usage**
+
+Use:
+
+```csharp
+await messenger.UpdateScheduleAsync(
+    new PlatformScheduleMessage(
+        command.Group,
+        view,
+        command.ScheduleMessage),
+    ct);
+```
+
+and:
+
+```csharp
+private Task AnswerAsync(string interactionId, string text, CancellationToken ct) =>
+    messenger.AnswerInteractionAsync(new PlatformInteractionReply(interactionId, text), ct);
+```
+
+Replace all `command.CallbackQueryId` calls with `command.InteractionId`.
+
+- [ ] **Step 5: Verify command and SQL tests for join**
+
+Run:
+
+```powershell
+dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter "JoinSessionCommand_ShouldExposePlatformNeutralInteractionContext|JoinSessionHandler_ShouldPersistPlayersByPlatformIdentity"
+```
+
+Expected: PASS for join-focused tests.
+
+## Task 5: GREEN - Refactor LeaveSessionCommand and Handler
+
+**Files:**
+- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/LeaveSessionHandler.cs`
+
+- [ ] **Step 1: Replace command record**
+
+Replace the existing `LeaveSessionCommand` declaration with:
+
+```csharp
+public sealed record LeaveSessionCommand(
+    Guid SessionId,
+    PlatformUser User,
+    string InteractionId,
+    PlatformGroup Group,
+    PlatformMessageRef ScheduleMessage);
+```
+
+- [ ] **Step 2: Replace participant lookup**
+
+Use platform identity instead of Telegram id:
+
+```csharp
+var platform = command.User.Platform.ToString();
+
+var participant = await connection.QuerySingleOrDefaultAsync<LeaveSessionParticipantDto>(
+    """
+    SELECT sp.id AS ParticipantRowId,
+           p.display_name AS DisplayName,
+           sp.registration_status AS RegistrationStatus
+    FROM session_participants sp
+    JOIN players p ON p.id = sp.player_id
+    WHERE sp.session_id = @SessionId
+      AND p.platform = @Platform
+      AND p.external_user_id = @ExternalUserId
+      AND sp.is_gm = false
+    FOR UPDATE OF sp
+    """,
+    new { command.SessionId, Platform = platform, command.User.ExternalUserId },
+    transaction);
+```
+
+- [ ] **Step 3: Update participant display query**
+
+Change the participant projection to:
+
+```sql
+COALESCE(p.external_username, p.telegram_username) AS TelegramUsername
+```
+
+- [ ] **Step 4: Update schedule message and interaction reply usage**
+
+Use:
+
+```csharp
+await messenger.UpdateScheduleAsync(
+    new PlatformScheduleMessage(
+        command.Group,
+        view,
+        command.ScheduleMessage),
+    ct);
+```
+
+Replace all `command.CallbackQueryId` calls with `command.InteractionId`.
+
+- [ ] **Step 5: Verify leave tests**
+
+Run:
+
+```powershell
+dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter "LeaveSessionCommand_ShouldExposePlatformNeutralInteractionContext|LeaveSessionHandler_ShouldFindParticipantsByPlatformIdentity|SessionInteractionHandlers_ShouldUpdateSchedulesThroughCommandMessageReference"
+```
+
+Expected: PASS.
+
+## Task 6: GREEN - Convert Telegram Router to Neutral Commands
+
+**Files:**
+- Modify: `src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs`
+
+- [ ] **Step 1: Add local conversion values in `HandleCallbackQueryAsync`**
+
+After parsing `action`, add:
+
+```csharp
+var user = TelegramPlatformIds.User(
+    query.From.Id,
+    query.From.FirstName + (string.IsNullOrEmpty(query.From.LastName) ? "" : $" {query.From.LastName}"),
+    query.From.Username);
+var group = TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId, message.Chat.Title);
+var scheduleMessage = TelegramPlatformIds.Message(message.Chat.Id, message.MessageThreadId, message.MessageId);
+```
+
+- [ ] **Step 2: Update join command construction**
+
+```csharp
+var command = new JoinSessionCommand(
+    SessionId: joinSessionId,
+    User: user,
+    InteractionId: query.Id,
+    Group: group,
+    ScheduleMessage: scheduleMessage);
+```
+
+- [ ] **Step 3: Update leave command construction**
+
+```csharp
+var command = new LeaveSessionCommand(
+    SessionId: leaveSessionId,
+    User: user,
+    InteractionId: query.Id,
+    Group: group,
+    ScheduleMessage: scheduleMessage);
+```
+
+- [ ] **Step 4: Verify compile**
+
+Run:
+
+```powershell
+dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter PlatformNeutralSessionInteractionCommandTests
+```
+
+Expected: PASS.
+
+## Task 7: REFACTOR - Clean Up and Full Test Pass
+
+**Files:**
+- Modify only files already listed if cleanup is needed.
+
+- [ ] **Step 1: Remove now-unused Telegram handler imports**
+
+Check `JoinSessionHandler.cs` and `LeaveSessionHandler.cs` for unused:
+
+```csharp
+using GmRelay.Bot.Infrastructure.Telegram;
+```
+
+Remove it from handlers if no longer needed.
+
+- [ ] **Step 2: Run focused tests**
+
+```powershell
+dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter "PlatformNeutralSessionInteractionCommandTests|PlatformNeutralSessionInteractionSqlTests|PlatformIdentityMigrationTests"
+```
+
+Expected: PASS.
+
+- [ ] **Step 3: Run full test suite**
+
+```powershell
+dotnet test .\GM-Relay.slnx
+```
+
+Expected: PASS.
+
+- [ ] **Step 4: Build solution**
+
+```powershell
+dotnet build .\GM-Relay.slnx
+```
+
+Expected: PASS.
+
+## Task 8: Version Bump
+
+**Files:**
+- Modify: `Directory.Build.props`
+- Modify: `compose.yaml`
+- Modify: `.gitea/workflows/deploy.yml`
+- Modify: `src/GmRelay.Web/Components/Layout/NavMenu.razor`
+
+- [ ] **Step 1: Update version from `2.1.0` to `2.1.1`**
+
+Expected exact replacements:
+
+```xml
+<Version>2.1.1</Version>
+```
+
+```yaml
+VERSION: 2.1.1
+```
+
+```yaml
+image: git.codeanddice.ru/toutsu/gmrelay-bot:2.1.1
+image: git.codeanddice.ru/toutsu/gmrelay-web:2.1.1
+```
+
+```razor
+<div class="nav-version">v2.1.1</div>
+```
+
+- [ ] **Step 2: Verify synchronized versions**
+
+Run:
+
+```powershell
+rg "<Version>|image: git.codeanddice.ru/toutsu/gmrelay-|VERSION:|nav-version" Directory.Build.props compose.yaml .gitea\workflows\deploy.yml src\GmRelay.Web\Components\Layout\NavMenu.razor
+```
+
+Expected: all project image/app/deploy UI versions show `2.1.1`.
+
+## Task 9: PR, CI, Review, Merge, Deploy, Release
+
+**Files:**
+- No additional source changes expected.
+
+- [ ] **Step 1: Create branch after approval**
+
+```powershell
+git checkout -b refactor/issue-25-platform-neutral-join-leave
+```
+
+- [ ] **Step 2: Stage only intended files**
+
+```powershell
+git add docs/superpowers/plans/2026-05-18-platform-neutral-join-leave.md tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/PlatformNeutralSessionInteractionCommandTests.cs tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/PlatformNeutralSessionInteractionSqlTests.cs tests/GmRelay.Bot.Tests/Infrastructure/Database/PlatformIdentityMigrationTests.cs src/GmRelay.Bot/Migrations/V017__allow_platform_neutral_players.sql src/GmRelay.Bot/Features/Sessions/CreateSession/JoinSessionHandler.cs src/GmRelay.Bot/Features/Sessions/CreateSession/LeaveSessionHandler.cs src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs Directory.Build.props compose.yaml .gitea/workflows/deploy.yml src/GmRelay.Web/Components/Layout/NavMenu.razor
+```
+
+- [ ] **Step 3: Commit**
+
+```powershell
+git commit -m "refactor: make session join leave platform-neutral"
+```
+
+- [ ] **Step 4: Push and create Gitea PR**
+
+```powershell
+git push -u origin refactor/issue-25-platform-neutral-join-leave
+```
+
+PR title:
+
+```text
+refactor: make session join leave platform-neutral
+```
+
+PR body:
+
+```markdown
+## Summary
+- Closes #25.
+- Converts join/leave session interaction commands from Telegram-specific fields to platform-neutral `PlatformUser`, `PlatformGroup`, and `PlatformMessageRef`.
+- Persists and looks up session participants by `(platform, external_user_id)`.
+- Keeps Telegram callback data and schedule update behavior intact.
+
+## Test plan
+- `dotnet test .\tests\GmRelay.Bot.Tests\GmRelay.Bot.Tests.csproj --filter "PlatformNeutralSessionInteractionCommandTests|PlatformNeutralSessionInteractionSqlTests|PlatformIdentityMigrationTests"`
+- `dotnet test .\GM-Relay.slnx`
+- `dotnet build .\GM-Relay.slnx`
+
+## Workflow
+- [ ] CI passes
+- [ ] Code review approved
+- [ ] Deployed
+- [ ] Release published
+```
+
+- [ ] **Step 5: Watch CI, request review, merge, deploy, release**
+
+Use Gitea MCP for PR creation, CI polling, review, merge, deploy monitoring, and release `v2.1.1`. Close issue #25 after release and add a comment linking the PR and release.
+
+## Self-Review
+
+- Spec coverage: issue scope is covered by neutral command records, Telegram adapter conversion, platform identity SQL, messenger-based schedule updates, and tests.
+- Placeholder scan: no `TBD`, `TODO`, or "fill later" steps remain.
+- Type consistency: commands consistently use `PlatformUser User`, `string InteractionId`, `PlatformGroup Group`, and `PlatformMessageRef ScheduleMessage`.

docs/superpowers/plans/2026-05-19-discord-newsession-listsessions.md

@@ -0,0 +1,984 @@
+# Discord /newsession и /listsessions — Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:test-driven-development (TDD) for every task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Реализовать slash-команды `/newsession` и `/listsessions` в Discord-боте, позволяющие создавать батчи сессий и просматривать расписание без Web Dashboard.
+
+**Architecture:** Каждая команда — отдельный vertical slice в `GmRelay.DiscordBot`: парсер входных данных → handler с SQL (через Dapper) → отправка через NetCord REST API. Рендеринг переиспользует существующий `DiscordSessionBatchRenderer`. Данные пишутся в общую PostgreSQL модель через platform-agnostic колонки (`platform`, `external_group_id`, `external_user_id`).
+
+**Tech Stack:** .NET 10, NetCord 1.0.0-alpha.489, NetCord.Hosting.Services, Dapper, Npgsql, xUnit.
+
+**Version Bump:** minor (2.3.0 → 2.4.0) — новый функционал.
+
+---
+
+## File Structure
+
+| File | Responsibility |
+|------|--------------|
+| `src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionCommand.cs` | Slash-команда `/newsession` с параметрами (title, time, seats, link) |
+| `src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionHandler.cs` | Handler создания batch + sessions в БД, проверка прав |
+| `src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsCommand.cs` | Slash-команда `/listsessions` |
+| `src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsHandler.cs` | Handler запроса активных сессий и публикации embed |
+| `src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPermissionChecker.cs` | Проверка прав пользователя в guild (owner/admin/manager) |
+| `src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPlatformMessenger.cs` | Реализация `IPlatformMessenger` для отправки/обновления расписания в Discord |
+| `tests/GmRelay.Bot.Tests/Discord/DiscordNewSessionHandlerTests.cs` | TDD-тесты создания сессий из Discord |
+| `tests/GmRelay.Bot.Tests/Discord/DiscordListSessionsHandlerTests.cs` | TDD-тесты вывода расписания |
+| `tests/GmRelay.Bot.Tests/Discord/DiscordPermissionCheckerTests.cs` | TDD-тесты проверки прав |
+| `src/GmRelay.DiscordBot/Program.cs` | Регистрация DI: handlers, permission checker, platform messenger |
+
+---
+
+## Task 1: DiscordPermissionChecker
+
+**Files:**
+- Create: `src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPermissionChecker.cs`
+- Test: `tests/GmRelay.Bot.Tests/Discord/DiscordPermissionCheckerTests.cs`
+
+**Context:** Discord использует guild-роли. Для MVP достаточно проверки: пользователь — owner guild, имеет роль `Administrator`, или записан как `group_managers` в БД для данной `game_groups`.
+
+### Step 1.1: Write the failing test
+
+```csharp
+using GmRelay.DiscordBot.Infrastructure.Discord;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordPermissionCheckerTests
+{
+    [Fact]
+    public void CanManageSchedule_WhenUserIsGuildOwner_ReturnsTrue()
+    {
+        var checker = new DiscordPermissionChecker();
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: 123456789ul,
+            userRoles: Array.Empty<ulong>(),
+            dbManagerUserIds: Array.Empty<ulong>());
+
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void CanManageSchedule_WhenUserHasAdministratorRole_ReturnsTrue()
+    {
+        var checker = new DiscordPermissionChecker();
+        var adminRole = 999ul;
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: 987654321ul,
+            userRoles: new[] { adminRole },
+            dbManagerUserIds: Array.Empty<ulong>());
+
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void CanManageSchedule_WhenUserIsDbManager_ReturnsTrue()
+    {
+        var checker = new DiscordPermissionChecker();
+        var managerId = 555ul;
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: managerId,
+            userRoles: Array.Empty<ulong>(),
+            dbManagerUserIds: new[] { managerId });
+
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void CanManageSchedule_WhenRegularUser_ReturnsFalse()
+    {
+        var checker = new DiscordPermissionChecker();
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: 111ul,
+            userRoles: Array.Empty<ulong>(),
+            dbManagerUserIds: new[] { 222ul });
+
+        Assert.False(result);
+    }
+}
+```
+
+### Step 1.2: Run test to verify it fails
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordPermissionCheckerTests" --verbosity normal`
+Expected: FAIL — `DiscordPermissionChecker` not found.
+
+### Step 1.3: Write minimal implementation
+
+Create `src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPermissionChecker.cs`:
+
+```csharp
+namespace GmRelay.DiscordBot.Infrastructure.Discord;
+
+public sealed class DiscordPermissionChecker
+{
+    // Discord Administrator permission bitflag
+    private const ulong AdministratorPermission = 0x8;
+
+    public bool CanManageSchedule(
+        ulong guildOwnerId,
+        ulong userId,
+        IEnumerable<ulong> userRoles,
+        IEnumerable<ulong> dbManagerUserIds)
+    {
+        if (userId == guildOwnerId)
+            return true;
+
+        if (dbManagerUserIds.Contains(userId))
+            return true;
+
+        // NetCord provides permission resolution via GuildUser.Permissions;
+        // here we accept pre-resolved flag for simplicity.
+        // Actual command handler will pass resolved permissions.
+        return false;
+    }
+
+    public bool CanManageSchedule(ulong guildOwnerId, ulong userId, IEnumerable<ulong> dbManagerUserIds, ulong resolvedPermissions)
+    {
+        if (userId == guildOwnerId)
+            return true;
+
+        if (dbManagerUserIds.Contains(userId))
+            return true;
+
+        return (resolvedPermissions & AdministratorPermission) == AdministratorPermission;
+    }
+}
+```
+
+### Step 1.4: Run test to verify it passes
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordPermissionCheckerTests" --verbosity normal`
+Expected: PASS (4/4).
+
+### Step 1.5: Commit
+
+```bash
+git add src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPermissionChecker.cs tests/GmRelay.Bot.Tests/Discord/DiscordPermissionCheckerTests.cs
+git commit -m "feat(discord): add DiscordPermissionChecker for session management rights
+
+Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>"
+```
+
+---
+
+## Task 2: DiscordListSessionsHandler + Command
+
+**Files:**
+- Create: `src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsHandler.cs`
+- Create: `src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsCommand.cs`
+- Test: `tests/GmRelay.Bot.Tests/Discord/DiscordListSessionsHandlerTests.cs`
+
+**Context:** Handler должен:
+1. Найти `game_groups` по `external_group_id` = `guild_id`.
+2. Выбрать предстоящие сессии (`scheduled_at > NOW()`, `status != Cancelled`).
+3. Собрать участников.
+4. Построить view через `SessionBatchViewBuilder`.
+5. Отрендерить через `DiscordSessionBatchRenderer`.
+6. Отправить embed + buttons в Discord channel.
+
+### Step 2.1: Write the failing test
+
+Create `tests/GmRelay.Bot.Tests/Discord/DiscordListSessionsHandlerTests.cs`:
+
+```csharp
+using GmRelay.DiscordBot.Features.Sessions;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordListSessionsHandlerTests
+{
+    [Fact]
+    public void BuildSchedule_WithSessions_ReturnsEmbedsAndButtons()
+    {
+        var sessionId = Guid.NewGuid();
+        var sessions = new[]
+        {
+            new SessionBatchDto(sessionId, DateTime.UtcNow.AddDays(1), SessionStatus.Planned, 4, "https://example.com")
+        };
+        var participants = Array.Empty<ParticipantBatchDto>();
+
+        var view = SessionBatchViewBuilder.Build("Test Campaign", sessions, participants);
+        var (embeds, actionRows) = GmRelay.DiscordBot.Rendering.DiscordSessionBatchRenderer.Render(view);
+
+        Assert.Single(embeds);
+        Assert.Single(actionRows);
+    }
+
+    [Fact]
+    public void BuildSchedule_WithCancelledSession_SkipsActionRows()
+    {
+        var cancelledSessionId = Guid.NewGuid();
+        var sessions = new[] { new SessionBatchDto(cancelledSessionId, DateTime.UtcNow.AddDays(1), SessionStatus.Cancelled, null, "") };
+        var participants = Array.Empty<ParticipantBatchDto>();
+
+        var view = SessionBatchViewBuilder.Build("Test Campaign", sessions, participants);
+        var (embeds, actionRows) = GmRelay.DiscordBot.Rendering.DiscordSessionBatchRenderer.Render(view);
+
+        Assert.Single(embeds);
+        Assert.Empty(actionRows);
+    }
+}
+```
+
+### Step 2.2: Run test — verify RED
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordListSessionsHandlerTests" --verbosity normal`
+Expected: FAIL — `DiscordListSessionsHandler` not found.
+
+### Step 2.3: Write minimal implementation
+
+Create `src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsHandler.cs`:
+
+```csharp
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+using NetCord.Rest;
+using Npgsql;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+internal sealed record DiscordSessionListItemDto(
+    Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers,
+    int PlayerCount, int WaitlistCount);
+
+public sealed class DiscordListSessionsHandler(NpgsqlDataSource dataSource)
+{
+    public async Task<SessionBatchViewModel?> BuildScheduleAsync(
+        string guildId,
+        string channelId,
+        CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        var sessions = await connection.QueryAsync<DiscordSessionListItemDto>(
+            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt, s.status as Status,
+                     s.max_players as MaxPlayers,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Active) as PlayerCount,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted) as WaitlistCount
+              FROM sessions s
+              JOIN game_groups g ON s.group_id = g.id
+              LEFT JOIN session_participants sp ON s.id = sp.session_id
+              WHERE g.platform = 'Discord'
+                AND g.external_group_id = @GuildId
+                AND s.status != @Cancelled
+                AND s.scheduled_at > NOW()
+              GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players
+              ORDER BY s.scheduled_at ASC",
+            new
+            {
+                GuildId = guildId,
+                Cancelled = SessionStatus.Cancelled,
+                Active = ParticipantRegistrationStatus.Active,
+                Waitlisted = ParticipantRegistrationStatus.Waitlisted
+            });
+
+        var sessionList = sessions.ToList();
+        if (sessionList.Count == 0)
+            return null;
+
+        var sessionIds = sessionList.Select(s => s.Id).ToList();
+        var participants = await connection.QueryAsync<ParticipantBatchDto>(
+            @"SELECT sp.session_id as SessionId,
+                     p.display_name as DisplayName,
+                     COALESCE(p.external_username, p.telegram_username) as TelegramUsername,
+                     sp.registration_status as RegistrationStatus
+              FROM session_participants sp
+              JOIN players p ON p.id = sp.player_id
+              WHERE sp.session_id = ANY(@SessionIds) AND sp.is_gm = false
+              ORDER BY sp.registration_status ASC, sp.created_at ASC",
+            new { SessionIds = sessionIds });
+
+        var firstTitle = sessionList.First().Title;
+        var batchDtos = sessionList.Select(s => new SessionBatchDto(
+            s.Id, s.ScheduledAt, s.Status, s.MaxPlayers, "")).ToList();
+
+        return SessionBatchViewBuilder.Build(firstTitle, batchDtos, participants.ToList());
+    }
+}
+```
+
+Create `src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsCommand.cs`:
+
+```csharp
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+[SlashCommand("listsessions", "Show upcoming game sessions in this server")]
+public class DiscordListSessionsCommand : SlashCommandModule<SlashCommandContext>
+{
+    private readonly DiscordListSessionsHandler _handler;
+
+    public DiscordListSessionsCommand(DiscordListSessionsHandler handler)
+    {
+        _handler = handler;
+    }
+
+    public override async Task ExecuteAsync()
+    {
+        var guildId = Context.Guild?.Id.ToString()
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+        var channelId = Context.Channel.Id.ToString();
+
+        var view = await _handler.BuildScheduleAsync(guildId, channelId, Context.CancellationToken);
+
+        if (view is null)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("📭 В этом сервере нет предстоящих игр."));
+            return;
+        }
+
+        var (embeds, actionRows) = Rendering.DiscordSessionBatchRenderer.Render(view);
+
+        await Context.Interaction.SendResponseAsync(
+            InteractionCallback.Message(new InteractionMessageProperties()
+                .WithEmbeds(embeds)
+                .WithComponents(actionRows)));
+    }
+}
+```
+
+### Step 2.4: Run test — verify GREEN
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordListSessionsHandlerTests" --verbosity normal`
+Expected: PASS.
+
+### Step 2.5: Commit
+
+```bash
+git add src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsHandler.cs src/GmRelay.DiscordBot/Features/Sessions/DiscordListSessionsCommand.cs tests/GmRelay.Bot.Tests/Discord/DiscordListSessionsHandlerTests.cs
+git commit -m "feat(discord): add /listsessions slash command and handler
+
+Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>"
+```
+
+---
+
+## Task 3: DiscordNewSessionHandler + Command
+
+**Files:**
+- Create: `src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionHandler.cs`
+- Create: `src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionCommand.cs`
+- Test: `tests/GmRelay.Bot.Tests/Discord/DiscordNewSessionHandlerTests.cs`
+
+**Context:** Handler должен:
+1. Проверить права пользователя (owner/admin/manager).
+2. Upsert игрока (GM) в `players` с `platform = 'Discord'`.
+3. Upsert `game_groups` с `platform = 'Discord'`, `external_group_id = guild_id`.
+4. Создать batch + sessions.
+5. Отправить rendered schedule в Discord channel.
+6. Сохранить `platform_messages` reference.
+
+### Step 3.1: Write the failing test
+
+Create `tests/GmRelay.Bot.Tests/Discord/DiscordNewSessionHandlerTests.cs`:
+
+```csharp
+using GmRelay.DiscordBot.Features.Sessions;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordNewSessionHandlerTests
+{
+    [Fact]
+    public void ParseTimeInput_ShouldParseDiscordDateFormat()
+    {
+        var result = DiscordNewSessionHandler.ParseTimeInput("2026-05-20 19:30");
+        Assert.True(result.IsSuccess);
+        Assert.Equal(2026, result.Value.Year);
+        Assert.Equal(5, result.Value.Month);
+        Assert.Equal(20, result.Value.Day);
+        Assert.Equal(19, result.Value.Hour);
+        Assert.Equal(30, result.Value.Minute);
+    }
+
+    [Fact]
+    public void ParseTimeInput_ShouldRejectPastDate()
+    {
+        var result = DiscordNewSessionHandler.ParseTimeInput("2020-01-01 00:00");
+        Assert.False(result.IsSuccess);
+    }
+
+    [Fact]
+    public void ParseTimeInput_ShouldParseRussianDateFormat()
+    {
+        var result = DiscordNewSessionHandler.ParseTimeInput("20.05.2026 19:30");
+        Assert.True(result.IsSuccess);
+        Assert.Equal(2026, result.Value.Year);
+        Assert.Equal(5, result.Value.Month);
+        Assert.Equal(20, result.Value.Day);
+    }
+
+    [Fact]
+    public void ParseTimeInput_ShouldRejectInvalidFormat()
+    {
+        var result = DiscordNewSessionHandler.ParseTimeInput("not-a-date");
+        Assert.False(result.IsSuccess);
+        Assert.NotNull(result.Error);
+    }
+}
+```
+
+### Step 3.2: Run test — verify RED
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordNewSessionHandlerTests" --verbosity normal`
+Expected: FAIL — `DiscordNewSessionHandler` not found.
+
+### Step 3.3: Write minimal implementation
+
+Create `src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionHandler.cs`:
+
+```csharp
+using Dapper;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed record TimeParseResult(bool IsSuccess, DateTimeOffset Value, string? Error);
+
+public sealed class DiscordNewSessionHandler(
+    NpgsqlDataSource dataSource,
+    DiscordPermissionChecker permissionChecker,
+    IPlatformMessenger messenger,
+    ILogger<DiscordNewSessionHandler> logger)
+{
+    public static TimeParseResult ParseTimeInput(string input)
+    {
+        if (DateTimeOffset.TryParseExact(
+            input.Trim(),
+            "yyyy-MM-dd HH:mm",
+            System.Globalization.CultureInfo.InvariantCulture,
+            System.Globalization.DateTimeStyles.AssumeUniversal,
+            out var result))
+        {
+            if (result < DateTimeOffset.UtcNow)
+                return new TimeParseResult(false, default, "Дата находится в прошлом.");
+
+            return new TimeParseResult(true, result.ToUniversalTime(), null);
+        }
+
+        if (DateTimeOffset.TryParseExact(
+            input.Trim(),
+            "dd.MM.yyyy HH:mm",
+            System.Globalization.CultureInfo.InvariantCulture,
+            System.Globalization.DateTimeStyles.AssumeUniversal,
+            out var altResult))
+        {
+            if (altResult < DateTimeOffset.UtcNow)
+                return new TimeParseResult(false, default, "Дата находится в прошлом.");
+
+            return new TimeParseResult(true, altResult.ToUniversalTime(), null);
+        }
+
+        return new TimeParseResult(false, default, "Некорректный формат даты. Используйте YYYY-MM-DD HH:mm или DD.MM.YYYY HH:mm");
+    }
+
+    public async Task<SessionBatchViewModel> HandleAsync(
+        string guildId,
+        string channelId,
+        ulong userId,
+        string userDisplayName,
+        IEnumerable<ulong> userRoles,
+        ulong guildOwnerId,
+        string title,
+        DateTimeOffset scheduledAt,
+        int? maxPlayers,
+        string? joinLink,
+        CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        // Resolve db managers
+        var dbManagerUserIds = await connection.QueryAsync<ulong>(
+            @"SELECT CAST(p.external_user_id AS BIGINT)
+              FROM group_managers gm
+              JOIN players p ON p.id = gm.player_id
+              JOIN game_groups g ON g.id = gm.group_id
+              WHERE g.platform = 'Discord' AND g.external_group_id = @GuildId",
+            new { GuildId = guildId });
+
+        if (!permissionChecker.CanManageSchedule(guildOwnerId, userId, userRoles, dbManagerUserIds))
+        {
+            throw new UnauthorizedAccessException("⛔ Только owner, администратор или manager могут создавать сессии.");
+        }
+
+        await using var transaction = await connection.BeginTransactionAsync(cancellationToken);
+        try
+        {
+            // Upsert player
+            await connection.ExecuteAsync(
+                @"INSERT INTO players (display_name, platform, external_user_id, external_username)
+                  VALUES (@Name, 'Discord', @UserId, @Name)
+                  ON CONFLICT (platform, external_user_id)
+                  WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
+                  DO UPDATE SET display_name = EXCLUDED.display_name,
+                                external_username = EXCLUDED.external_username",
+                new { Name = userDisplayName, UserId = userId.ToString() },
+                transaction);
+
+            // Upsert group
+            var groupId = await connection.ExecuteScalarAsync<Guid>(
+                @"INSERT INTO game_groups (name, platform, external_group_id, external_channel_id)
+                  VALUES (@GuildId, 'Discord', @GuildId, @ChannelId)
+                  ON CONFLICT (platform, external_group_id)
+                  WHERE platform IS NOT NULL AND external_group_id IS NOT NULL
+                  DO UPDATE SET name = EXCLUDED.name,
+                                external_channel_id = COALESCE(EXCLUDED.external_channel_id, game_groups.external_channel_id)
+                  RETURNING id",
+                new { GuildId = guildId, ChannelId = channelId },
+                transaction);
+
+            // Ensure manager record
+            await connection.ExecuteAsync(
+                @"INSERT INTO group_managers (group_id, player_id, role)
+                  SELECT @GroupId, p.id, @OwnerRole
+                  FROM players p
+                  WHERE p.platform = 'Discord' AND p.external_user_id = @UserId
+                  ON CONFLICT (group_id, player_id) DO NOTHING",
+                new { GroupId = groupId, UserId = userId.ToString(), OwnerRole = GroupManagerRoleExtensions.OwnerValue },
+                transaction);
+
+            // Create batch + session
+            var batchId = Guid.NewGuid();
+            var sessionId = await connection.ExecuteScalarAsync<Guid>(
+                @"INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, max_players)
+                  VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @MaxPlayers)
+                  RETURNING id",
+                new
+                {
+                    BatchId = batchId,
+                    GroupId = groupId,
+                    Title = title,
+                    Link = joinLink ?? string.Empty,
+                    ScheduledAt = scheduledAt.UtcDateTime,
+                    Status = SessionStatus.Planned,
+                    MaxPlayers = maxPlayers
+                },
+                transaction);
+
+            await transaction.CommitAsync(cancellationToken);
+
+            var sessions = new[] { new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, maxPlayers, joinLink ?? string.Empty) };
+            var view = SessionBatchViewBuilder.Build(title, sessions, Array.Empty<ParticipantBatchDto>());
+
+            await messenger.SendScheduleAsync(
+                new PlatformScheduleMessage(
+                    new PlatformGroup(PlatformKind.Discord, guildId, guildId, channelId),
+                    view,
+                    null),
+                cancellationToken);
+
+            return view;
+        }
+        catch
+        {
+            await transaction.RollbackAsync(cancellationToken);
+            throw;
+        }
+    }
+}
+```
+
+Create `src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionCommand.cs`:
+
+```csharp
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+[SlashCommand("newsession", "Create a new game session")]
+public class DiscordNewSessionCommand : SlashCommandModule<SlashCommandContext>
+{
+    private readonly DiscordNewSessionHandler _handler;
+
+    public DiscordNewSessionCommand(DiscordNewSessionHandler handler)
+    {
+        _handler = handler;
+    }
+
+    [SlashCommandOption("title", "Game title", Required = true)]
+    public string Title { get; set; } = string.Empty;
+
+    [SlashCommandOption("time", "Session time (YYYY-MM-DD HH:mm or DD.MM.YYYY HH:mm)", Required = true)]
+    public string Time { get; set; } = string.Empty;
+
+    [SlashCommandOption("seats", "Maximum number of players", Required = false)]
+    public long? Seats { get; set; }
+
+    [SlashCommandOption("link", "Join link", Required = false)]
+    public string? Link { get; set; }
+
+    public override async Task ExecuteAsync()
+    {
+        var guild = Context.Guild
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+
+        var timeResult = DiscordNewSessionHandler.ParseTimeInput(Time);
+        if (!timeResult.IsSuccess)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($"❌ {timeResult.Error}"));
+            return;
+        }
+
+        try
+        {
+            var view = await _handler.HandleAsync(
+                guildId: guild.Id.ToString(),
+                channelId: Context.Channel.Id.ToString(),
+                userId: Context.User.Id,
+                userDisplayName: Context.User.GlobalName ?? Context.User.Username,
+                userRoles: Context.GuildUser!.RoleIds,
+                guildOwnerId: guild.OwnerId,
+                title: Title,
+                scheduledAt: timeResult.Value,
+                maxPlayers: Seats is null ? null : (int)Seats.Value,
+                joinLink: Link,
+                Context.CancellationToken);
+
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("✅ Сессия создана!"));
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($"⛅ {ex.Message}"));
+        }
+        catch (Exception ex)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("💥 Произошла ошибка при создании сессии."));
+        }
+    }
+}
+```
+
+### Step 3.4: Run test — verify GREEN
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordNewSessionHandlerTests" --verbosity normal`
+Expected: PASS.
+
+### Step 3.5: Commit
+
+```bash
+git add src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionHandler.cs src/GmRelay.DiscordBot/Features/Sessions/DiscordNewSessionCommand.cs tests/GmRelay.Bot.Tests/Discord/DiscordNewSessionHandlerTests.cs
+git commit -m "feat(discord): add /newsession slash command and handler
+
+Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>"
+```
+
+---
+
+## Task 4: DiscordPlatformMessenger
+
+**Files:**
+- Create: `src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPlatformMessenger.cs`
+- Test: `tests/GmRelay.Bot.Tests/Discord/DiscordPlatformMessengerTests.cs`
+
+**Context:** Необходима реализация `IPlatformMessenger` для отправки schedule embeds и обновления существующих сообщений в Discord. Для MVP достаточно `SendScheduleAsync` и `UpdateScheduleAsync` (stub для остальных).
+
+### Step 4.1: Write the failing test
+
+Create `tests/GmRelay.Bot.Tests/Discord/DiscordPlatformMessengerTests.cs`:
+
+```csharp
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordPlatformMessengerTests
+{
+    [Fact]
+    public void Constructor_ShouldAcceptRestClient()
+    {
+        // DiscordPlatformMessenger requires a NetCord.Rest.RestClient.
+        // We verify the type can be instantiated (RestClient itself is not easily unit-testable without a real token).
+        // This test proves the contract exists and compiles.
+        var constructor = typeof(DiscordPlatformMessenger).GetConstructor(new[] { typeof(NetCord.Rest.RestClient) });
+        Assert.NotNull(constructor);
+    }
+
+    [Fact]
+    public void DiscordPlatformMessenger_ShouldImplementIPlatformMessenger()
+    {
+        Assert.True(typeof(IPlatformMessenger).IsAssignableFrom(typeof(DiscordPlatformMessenger)));
+    }
+}
+```
+
+### Step 4.2: Run test — verify RED
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordPlatformMessengerTests" --verbosity normal`
+Expected: FAIL — `DiscordPlatformMessenger` not found.
+
+### Step 4.3: Write minimal implementation
+
+Create `src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPlatformMessenger.cs`:
+
+```csharp
+using GmRelay.DiscordBot.Rendering;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using NetCord;
+using NetCord.Rest;
+
+namespace GmRelay.DiscordBot.Infrastructure.Discord;
+
+public sealed class DiscordPlatformMessenger(RestClient restClient) : IPlatformMessenger
+{
+    public async Task<PlatformMessageRef> SendScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(message.View);
+
+        var channelId = ulong.Parse(message.Group.ExternalChannelId
+            ?? message.Group.ExternalGroupId);
+
+        var msg = await restClient.SendMessageAsync(
+            channelId,
+            new MessageProperties()
+                .WithEmbeds(embeds)
+                .WithComponents(actionRows),
+            ct);
+
+        return new PlatformMessageRef(
+            PlatformKind.Discord,
+            message.Group.ExternalGroupId,
+            null,
+            msg.Id.ToString());
+    }
+
+    public async Task UpdateScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        if (message.ExistingMessage is null)
+            return;
+
+        var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(message.View);
+
+        var channelId = ulong.Parse(message.Group.ExternalChannelId
+            ?? message.Group.ExternalGroupId);
+        var messageId = ulong.Parse(message.ExistingMessage.ExternalMessageId);
+
+        await restClient.ModifyMessageAsync(
+            channelId,
+            messageId,
+            new MessageProperties()
+                .WithEmbeds(embeds)
+                .WithComponents(actionRows),
+            ct);
+    }
+
+    public Task SendGroupMessageAsync(PlatformGroup group, string htmlText, CancellationToken ct)
+    {
+        // MVP: not needed for /newsession and /listsessions
+        return Task.CompletedTask;
+    }
+
+    public Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct)
+    {
+        // MVP: not needed
+        return Task.CompletedTask;
+    }
+
+    public Task AnswerInteractionAsync(PlatformInteractionReply reply, CancellationToken ct)
+    {
+        // MVP: not needed (commands answer inline via SlashCommandContext)
+        return Task.CompletedTask;
+    }
+
+    public Task SendCalendarFileAsync(PlatformCalendarFile file, CancellationToken ct)
+    {
+        // MVP: not needed
+        return Task.CompletedTask;
+    }
+}
+```
+
+### Step 4.4: Run test — verify GREEN
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordPlatformMessengerTests" --verbosity normal`
+Expected: PASS.
+
+### Step 4.5: Commit
+
+```bash
+git add src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPlatformMessenger.cs tests/GmRelay.Bot.Tests/Discord/DiscordPlatformMessengerTests.cs
+git commit -m "feat(discord): add DiscordPlatformMessenger IPlatformMessenger implementation
+
+Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>"
+```
+
+---
+
+## Task 5: Wire up DI and Register Commands
+
+**Files:**
+- Modify: `src/GmRelay.DiscordBot/Program.cs`
+
+### Step 5.1: Write the failing test (structure test)
+
+Modify `tests/GmRelay.Bot.Tests/Discord/DiscordStartupTests.cs` — add test that asserts new handlers are registered:
+
+```csharp
+[Fact]
+public void Program_ShouldRegisterDiscordSessionHandlers()
+{
+    var program = ReadProgram();
+    Assert.Contains("DiscordListSessionsHandler", program);
+    Assert.Contains("DiscordNewSessionHandler", program);
+    Assert.Contains("DiscordPermissionChecker", program);
+    Assert.Contains("DiscordPlatformMessenger", program);
+    Assert.Contains("IPlatformMessenger", program);
+}
+```
+
+### Step 5.2: Run test — verify RED
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordStartupTests" --verbosity normal`
+Expected: FAIL — asserts not found in Program.cs.
+
+### Step 5.3: Write minimal implementation
+
+Modify `src/GmRelay.DiscordBot/Program.cs`:
+
+```csharp
+using GmRelay.DiscordBot.Features.Sessions;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Platform;
+
+// ... existing usings ...
+
+builder.Services.AddSingleton<DiscordPermissionChecker>();
+builder.Services.AddSingleton<DiscordListSessionsHandler>();
+builder.Services.AddSingleton<DiscordNewSessionHandler>();
+builder.Services.AddSingleton<IPlatformMessenger, DiscordPlatformMessenger>();
+
+// After host.Build():
+host.AddSlashCommand("listsessions", "Show upcoming game sessions", async (DiscordListSessionsHandler handler, SlashCommandContext context) =>
+{
+    // NetCord module-based approach preferred; if AddSlashCommand lambda doesn't support DI injection of custom services,
+    // rely on module classes registered via AddApplicationCommands
+});
+```
+
+**Important:** NetCord module classes (`DiscordListSessionsCommand`, `DiscordNewSessionCommand`) автоматически регистрируются через `AddApplicationCommands()` + `AddGatewayHandlers(typeof(Program).Assembly)`. Constructor injection в модулях работает через DI контейнер. Никаких дополнительных `AddSlashCommand` для модулей не требуется.
+
+Убедиться, что в Program.cs есть:
+```csharp
+builder.Services.AddSingleton<DiscordPermissionChecker>();
+builder.Services.AddSingleton<DiscordListSessionsHandler>();
+builder.Services.AddSingleton<DiscordNewSessionHandler>();
+builder.Services.AddSingleton<IPlatformMessenger, DiscordPlatformMessenger>();
+```
+
+### Step 5.4: Run test — verify GREEN
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~DiscordStartupTests" --verbosity normal`
+Expected: PASS.
+
+### Step 5.5: Commit
+
+```bash
+git add src/GmRelay.DiscordBot/Program.cs tests/GmRelay.Bot.Tests/Discord/DiscordStartupTests.cs
+git commit -m "feat(discord): wire up DI registrations for session handlers and messenger
+
+Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>"
+```
+
+---
+
+## Task 6: Build Verification
+
+### Step 6.1: Build DiscordBot project
+
+Run: `dotnet build src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj --no-restore`
+Expected: Build succeeds (0 errors, 0 warnings).
+
+### Step 6.2: Run all tests
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --verbosity normal`
+Expected: All tests pass.
+
+### Step 6.3: Commit if any fixes needed
+
+If build or tests required fixes, commit them.
+
+---
+
+## Task 7: Version Bump
+
+**Files to modify:**
+- `Directory.Build.props`: `<Version>2.4.0</Version>`
+- `compose.yaml`: обновить теги `gmrelay-bot`, `gmrelay-web`, `gmrelay-discord-bot` → `2.4.0`
+- `.gitea/workflows/deploy.yml`: `VERSION: 2.4.0`
+- `src/GmRelay.Web/Components/Layout/NavMenu.razor`: `<div class="nav-version">v2.4.0</div>`
+
+### Step 7.1: Bump version
+
+Apply изменения ко всем 4 файлам.
+
+### Step 7.2: Update version test
+
+Modify `tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs` — обновить `Version_ShouldBeSynchronizedForDiscordFeatureRelease` ожидаемое значение на `2.4.0`.
+
+### Step 7.3: Run version test
+
+Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --filter "FullyQualifiedName~Version_ShouldBeSynchronizedForDiscordFeatureRelease" --verbosity normal`
+Expected: PASS.
+
+### Step 7.4: Commit
+
+```bash
+git add Directory.Build.props compose.yaml .gitea/workflows/deploy.yml src/GmRelay.Web/Components/Layout/NavMenu.razor tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs
+git commit -m "chore: bump version to 2.4.0
+
+Synchronized across Directory.Build.props, compose.yaml, deploy.yml, NavMenu.razor
+
+Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>"
+```
+
+---
+
+## Spec Coverage Self-Review
+
+| Issue Requirement | Task |
+|---|---|
+| Slash command `/newsession` | Task 3 |
+| Slash command `/listsessions` | Task 2 |
+| Сохранение platform group identity (guild/channel) | Task 3 (game_groups.platform, external_group_id, external_channel_id) |
+| Минимальная проверка прав | Task 1 + Task 3 |
+| Данные пишутся в общую PostgreSQL без Telegram-only assumptions | Task 2, 3 SQL используют platform-agnostic колонки |
+| `/listsessions` публикует/обновляет расписание | Task 2 + Task 4 |
+
+**Placeholder scan:** Нет TBD, TODO, "implement later". Каждый шаг содержит конкретный код.
+
+**Type consistency:** `DiscordPermissionChecker.CanManageSchedule` перегружен для resolved permissions (ulong bitflag). Handler передает `Context.GuildUser.RoleIds` и `guild.OwnerId`.
+
+---
+
+## Execution Handoff
+
+**Plan complete and saved to `docs/superpowers/plans/2026-05-19-discord-newsession-listsessions.md`.**
+
+**Two execution options:**
+
+1. **Subagent-Driven (recommended)** — I dispatch a fresh subagent per task, review between tasks, fast iteration
+2. **Inline Execution** — Execute tasks in this session using executing-plans, batch execution with checkpoints for review
+
+**Which approach?**

docs/superpowers/specs/2026-05-20-platform-messenger-scheduler-notifications-design.md

@@ -0,0 +1,140 @@
+# Platform Messenger Scheduler Notifications Design
+
+## Goal
+
+Issue #31 moves scheduler-driven notifications and reschedule deadline message updates behind `IPlatformMessenger`, preserving Telegram behavior and adding full Discord support instead of no-op placeholders.
+
+## Scope
+
+- `SessionSchedulerService` remains the trigger orchestrator, but scheduler handlers stop depending on Telegram API types for outbound notification work.
+- Confirmation requests, one-hour reminders, join-link notifications, RSVP follow-up messages, and reschedule deadline updates use platform-neutral contracts.
+- Telegram keeps the current user-visible behavior: same message content, RSVP buttons, direct messages, topic/thread targeting, and stored legacy message ids.
+- Discord receives full channel and direct notifications:
+  - confirmation requests are sent to the Discord channel with RSVP buttons;
+  - Discord RSVP button clicks update participant RSVP state, refresh the confirmation message, and send the same group/GM outcome notifications where applicable;
+  - one-hour reminders and join-link notifications are sent as Discord DMs when direct notifications are enabled;
+  - join-link notifications also post the channel message with participant mentions;
+  - reschedule deadline processing updates Discord vote and schedule messages through the same messenger boundary.
+- Discord DM failures are non-fatal: log a warning and continue without posting a public fallback message.
+
+## Architecture
+
+The platform boundary should be semantic, not Telegram-shaped. `GmRelay.Shared.Platform` already owns `PlatformKind`, `PlatformUser`, `PlatformGroup`, `PlatformMessageRef`, and `IPlatformMessenger`; issue #31 extends that layer with notification-specific DTOs and messenger methods.
+
+The scheduler handlers own database queries and notification eligibility. They load platform-neutral groups, users, message refs, and session data, then ask the platform messenger to send or update the platform message. Platform implementations own rendering details: Telegram renders HTML and inline keyboards; Discord renders embeds, components, channel messages, mentions, and DMs.
+
+RSVP handling should become platform-neutral enough for both Telegram and Discord. The current `HandleRsvpHandler` logic is not duplicated. Its command changes from Telegram ids to `PlatformUser`, `PlatformGroup`, `PlatformMessageRef`, and `InteractionId`. Telegram update routing maps callback queries into that command; Discord component routing maps RSVP button interactions into the same command.
+
+Reschedule finalization already has shared database logic in `RescheduleVotingFinalizer`. The remaining platform-specific deadline services should stop editing messages through `ITelegramBotClient` or Discord `RestClient` directly. They should load message refs and call `IPlatformMessenger` to update vote messages, schedule messages, and direct result notifications.
+
+## Platform Contracts
+
+Add semantic notification records in `GmRelay.Shared.Platform`, with names finalized during implementation planning:
+
+- `PlatformSessionParticipant`: a `PlatformUser` plus RSVP, registration, and display metadata needed by notification renderers.
+- `PlatformSessionNotification`: common session title, time, join link, notification mode, group, optional existing message, and participants.
+- `PlatformConfirmationRequest`: confirmation-specific session notification with RSVP actions.
+- `PlatformJoinLinkNotification`: join-link group/direct notification data.
+- `PlatformOneHourReminder`: one-hour direct reminder data.
+- `PlatformRsvpMessageUpdate`: refreshed confirmation message state after a participant responds.
+- `PlatformRescheduleVoteUpdate`: finalized reschedule vote message state, including selected option or rejection reason.
+
+Extend `IPlatformMessenger` with methods for these semantic operations while keeping existing schedule, group, private, interaction, and calendar methods intact for current flows:
+
+- send and update confirmation request messages;
+- send one-hour reminder direct notifications;
+- send join-link channel and direct notifications;
+- update finalized reschedule vote messages;
+- send RSVP outcome messages to the group and GM recipients.
+
+The exact method names should be chosen in the implementation plan after tests define the desired API, but each method should accept platform-neutral DTOs and return `PlatformMessageRef` when the caller must persist a sent message id.
+
+## Telegram Behavior
+
+Telegram implementation lives in `GmRelay.Bot.Infrastructure.Telegram.TelegramPlatformMessenger`.
+
+It must preserve:
+
+- `messageThreadId` handling for forum topics;
+- HTML parse mode where the existing flow uses HTML;
+- current confirmation and RSVP button callback payloads;
+- `confirmation_message_id` and `link_message_id` storage in `sessions`;
+- direct notification behavior controlled by `SessionNotificationMode`;
+- warning-and-continue behavior for failed direct messages;
+- existing schedule rendering through `TelegramSessionBatchRenderer` and `BatchMessageEditor`.
+
+Telegram-specific inbound parsing remains at the Telegram boundary. `UpdateRouter` can still use `Telegram.Bot.Types`, but the command it passes into the RSVP handler should be platform-neutral.
+
+## Discord Behavior
+
+Discord implementation lives in `GmRelay.DiscordBot.Infrastructure.Discord.DiscordPlatformMessenger`.
+
+It must support:
+
+- channel messages through the configured channel id in `PlatformGroup.ExternalChannelId`;
+- interactive RSVP buttons routed by `DiscordSessionInteractionModule`;
+- ephemeral interaction replies via the existing `DiscordInteractionReplyCache` pattern;
+- DMs through Discord user ids in `PlatformUser.ExternalUserId`;
+- non-fatal DM failures with warning logs;
+- Discord-friendly rendering, not raw Telegram HTML;
+- persistence of Discord schedule and notification message refs in `platform_messages` where later updates need them.
+
+The current Discord reschedule deadline service directly uses `RestClient` for vote and schedule message edits. This should be folded into `DiscordPlatformMessenger` so deadline services and future platform handlers do not need to know Discord API details.
+
+## Data Flow
+
+1. `SessionSchedulerService.TickAsync` asks `ISessionTriggerStore` for due confirmation, one-hour reminder, and join-link session ids.
+2. Each handler loads the session, group platform identity, message refs, participants, RSVP state, and notification mode.
+3. The handler builds a semantic platform notification DTO and calls `IPlatformMessenger`.
+4. The messenger renders and sends/updates platform messages.
+5. The handler persists sent message ids where required, using legacy `sessions.confirmation_message_id` and `sessions.link_message_id` for Telegram and `platform_messages` for Discord refs that need later updates.
+6. Telegram callback queries and Discord component interactions both call the same platform-neutral RSVP handler.
+7. Reschedule deadline services use `RescheduleVotingFinalizer`, then call `IPlatformMessenger` for vote message updates, schedule updates, and direct result notifications.
+
+## Error Handling
+
+- A failed trigger query still logs and lets the scheduler continue to the next trigger category.
+- A failed send/update for one session logs and does not stop other sessions in the same tick.
+- DM failures are warning-level and non-fatal for Telegram and Discord.
+- A missing platform message ref logs a warning and skips only the update that needs the ref.
+- Unsupported platform values throw at the messenger boundary, not inside scheduler orchestration.
+- If Discord cannot parse a stored channel, message, or user id, it logs the bad external id and skips that platform send/update.
+
+## Testing
+
+Use TDD for implementation.
+
+Focused tests should cover:
+
+- `IPlatformMessenger` exposes semantic notification methods without referencing Telegram or Discord assemblies from `GmRelay.Shared`.
+- `SendConfirmationHandler`, `SendOneHourReminderHandler`, `SendJoinLinkHandler`, `HandleRsvpHandler`, and reschedule deadline services do not call `ITelegramBotClient`, `BatchMessageEditor`, or Discord `RestClient` directly for notification output.
+- Telegram source/regression tests preserve thread ids, callback payloads, message id persistence, and direct notification mode behavior.
+- Discord source tests verify registration of scheduler handlers, RSVP component routes, and messenger methods.
+- RSVP flow tests run through platform-neutral `PlatformUser` identity, including Discord users without Telegram ids.
+- Discord messenger tests verify DMs are attempted, DM failures are swallowed after logging, channel notifications include buttons or mentions as appropriate, and message refs are returned.
+- Full regression: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj`, `dotnet build`, and `dotnet format --verify-no-changes --verbosity diagnostic`.
+
+## Versioning
+
+Current repository version is `2.6.0`. Although the Gitea issue is labeled `type:refactor`, the approved scope adds full Discord notification behavior. Proposed bump: `2.6.0` to `2.7.0`.
+
+Synchronize:
+
+- `Directory.Build.props`
+- `compose.yaml` image tags for bot, discord, and web
+- `.gitea/workflows/deploy.yml` `VERSION`
+- `src/GmRelay.Web/Components/Layout/NavMenu.razor`
+
+## Out Of Scope
+
+- Moving the entire scheduler hosted service into `GmRelay.Shared`.
+- Removing legacy Telegram columns such as `telegram_chat_id`, `confirmation_message_id`, or `link_message_id`.
+- Reworking Web dashboard Telegram behavior.
+- Public fallback messages when a Discord DM is blocked.
+
+## Self-Review
+
+- Spec coverage: every issue acceptance criterion is represented by scheduler handler boundaries, messenger contracts, Telegram behavior preservation, and Discord implementation requirements.
+- Placeholder scan: no TBD/TODO/fill-in-later sections remain.
+- Internal consistency: the design uses semantic platform DTOs consistently and keeps SDK-specific rendering in platform implementations.
+- Scope check: the work is large but still one coherent platform-notification refactor; moving the whole scheduler to shared remains explicitly out of scope.

scripts/restore.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+# GM-Relay PostgreSQL Backup Restore Script
+# Usage: ./scripts/restore.sh [backup_file]
+# If no file is provided, uses the most recent backup.
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+
+# Check required env
+if [ -z "${POSTGRES_PASSWORD:-}" ]; then
+    if [ -f "${PROJECT_ROOT}/.env" ]; then
+        # shellcheck source=/dev/null
+        set -a
+        . "${PROJECT_ROOT}/.env"
+        set +a
+    fi
+fi
+
+if [ -z "${POSTGRES_PASSWORD:-}" ]; then
+    echo "ERROR: POSTGRES_PASSWORD is not set. Please set it in your environment or .env file."
+    exit 1
+fi
+
+BACKUP_DIR="${PROJECT_ROOT}/backups"
+
+# Determine backup file
+if [ $# -ge 1 ]; then
+    BACKUP_FILE="$1"
+else
+    BACKUP_FILE=$(find "${BACKUP_DIR}" -name 'gmrelay_db_*.sql.gz' -type f -printf '%T+ %p\n' 2>/dev/null | sort -r | head -n1 | cut -d' ' -f2-)
+    if [ -z "${BACKUP_FILE}" ]; then
+        echo "ERROR: No backup files found in ${BACKUP_DIR}."
+        exit 1
+    fi
+fi
+
+if [ ! -f "${BACKUP_FILE}" ]; then
+    echo "ERROR: Backup file not found: ${BACKUP_FILE}"
+    exit 1
+fi
+
+echo "=================================================="
+echo "  GM-Relay PostgreSQL Restore"
+echo "=================================================="
+echo ""
+echo "Backup file: ${BACKUP_FILE}"
+echo "Database:    gmrelay_db"
+echo "User:        gmrelay"
+echo ""
+read -p "This will OVERWRITE the current database. Are you sure? [y/N] " CONFIRM
+
+if [[ ! "${CONFIRM}" =~ ^[Yy]$ ]]; then
+    echo "Restore cancelled."
+    exit 0
+fi
+
+echo ""
+echo "Restoring database from ${BACKUP_FILE}..."
+
+# Restore using docker compose exec to leverage the running postgres container
+COMPOSE_ARGS="-f ${PROJECT_ROOT}/compose.yaml"
+
+docker compose ${COMPOSE_ARGS} exec -T -e PGPASSWORD="${POSTGRES_PASSWORD}" db psql \
+    -U gmrelay \
+    -d gmrelay_db \
+    -c "DROP SCHEMA public CASCADE; CREATE SCHEMA public;" 2>/dev/null || true
+
+gunzip -c "${BACKUP_FILE}" | docker compose ${COMPOSE_ARGS} exec -T -e PGPASSWORD="${POSTGRES_PASSWORD}" db psql \
+    -U gmrelay \
+    -d gmrelay_db
+
+echo ""
+echo "=================================================="
+echo "  Restore completed successfully!"
+echo "=================================================="

src/GmRelay.AppHost/GmRelay.AppHost.csproj

@@ -2,6 +2,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\GmRelay.Bot\GmRelay.Bot.csproj" />
+    <ProjectReference Include="..\GmRelay.DiscordBot\GmRelay.DiscordBot.csproj" />
     <ProjectReference Include="..\GmRelay.Web\GmRelay.Web.csproj" />
   </ItemGroup>
 

src/GmRelay.AppHost/Program.cs

@@ -8,6 +8,10 @@ builder.AddProject<Projects.GmRelay_Bot>("bot")
     .WithReference(postgres)
     .WaitFor(postgres);
 
+builder.AddProject<Projects.GmRelay_DiscordBot>("discord")
+    .WithReference(postgres)
+    .WaitFor(postgres);
+
 builder.AddProject<Projects.GmRelay_Web>("web")
     .WithReference(postgres)
     .WaitFor(postgres);

src/GmRelay.AppHost/packages.lock.json

@@ -0,0 +1,687 @@
+{
+  "version": 1,
+  "dependencies": {
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+      },
+      "Aspire.Hosting.AppHost": {
+        "type": "Direct",
+        "requested": "[13.2.1, )",
+        "resolved": "13.2.1",
+        "contentHash": "4B/eoZPwOobxpMpvYnqe/EcXabjPhZJhfxlHXv5gdKd16duoWbHnvvAZJsVI3WUpakCwmsCiTrT4sNGfW8H+IQ==",
+        "dependencies": {
+          "AspNetCore.HealthChecks.Uris": "9.0.0",
+          "Aspire.Hosting": "13.2.1",
+          "Google.Protobuf": "3.33.5",
+          "Grpc.AspNetCore": "2.76.0",
+          "Grpc.Net.ClientFactory": "2.76.0",
+          "Grpc.Tools": "2.78.0",
+          "Humanizer.Core": "2.14.1",
+          "JsonPatch.Net": "3.3.0",
+          "KubernetesClient": "18.0.13",
+          "Microsoft.Extensions.Configuration.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Configuration.Binder": "10.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Diagnostics.HealthChecks": "10.0.5",
+          "Microsoft.Extensions.FileSystemGlobbing": "10.0.5",
+          "Microsoft.Extensions.Hosting": "10.0.5",
+          "Microsoft.Extensions.Hosting.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Http": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
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+          "ModelContextProtocol": "1.0.0",
+          "Newtonsoft.Json": "13.0.4",
+          "Polly.Core": "8.6.5",
+          "Semver": "3.0.0",
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+          "System.IO.Hashing": "10.0.3"
+        }
+      },
+      "Aspire.Hosting.Orchestration.win-x64": {
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+      },
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+        "dependencies": {
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+      },
+      "Semver": {
+        "type": "Transitive",
+        "resolved": "3.0.0",
+        "contentHash": "9jZCicsVgTebqkAujRWtC9J1A5EQVlu0TVKHcgoCuv345ve5DYf4D1MjhKEnQjdRZo6x/vdv6QQrYFs7ilGzLA==",
+        "dependencies": {
+          "Microsoft.Extensions.Primitives": "5.0.1"
+        }
+      },
+      "StreamJsonRpc": {
+        "type": "Transitive",
+        "resolved": "2.22.23",
+        "contentHash": "Ahq6uUFPnU9alny5h4agyX74th3PRq3NQCRNaDOqWcx20WT06mH/wENSk5IbHDc8BmfreQVEIBx5IXLBbsLFIA==",
+        "dependencies": {
+          "MessagePack": "2.5.192",
+          "Microsoft.VisualStudio.Threading.Only": "17.13.61",
+          "Microsoft.VisualStudio.Validation": "17.8.8",
+          "Nerdbank.Streams": "2.12.87",
+          "Newtonsoft.Json": "13.0.3"
+        }
+      },
+      "System.Diagnostics.EventLog": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
+        "contentHash": "wugvy+pBVzjQEnRs9wMTWwoaeNFX3hsaHeVHFDIvJSWXp7wfmNWu3mxAwBIE6pyW+g6+rHa1Of5fTzb0QVqUTA=="
+      },
+      "System.IO.Hashing": {
+        "type": "Transitive",
+        "resolved": "10.0.3",
+        "contentHash": "La6ICwsdTKhVX+LKN+pvFjQRR3LhLwq3uKdi2knjLzRyPYBSydF4cjXidYxIiTcDD6XVYdsBWQEI8ZxiZ/OdIg=="
+      },
+      "YamlDotNet": {
+        "type": "Transitive",
+        "resolved": "16.3.0",
+        "contentHash": "SgMOdxbz8X65z8hraIs6hOEdnkH6hESTAIUa7viEngHOYaH+6q5XJmwr1+yb9vJpNQ19hCQY69xbFsLtXpobQA=="
+      }
+    }
+  }
+}

src/GmRelay.Bot/Dockerfile

@@ -30,8 +30,16 @@ RUN dotnet publish "GmRelay.Bot.csproj" -c Release -a $TARGETARCH -o /app/publis
 FROM mcr.microsoft.com/dotnet/runtime-deps:10.0-noble AS final
 WORKDIR /app
 
+# Устанавливаем wget для healthcheck
+RUN apt-get update && apt-get install -y --no-install-recommends wget \
+    && rm -rf /var/lib/apt/lists/*
+
 # Копируем только AOT-результаты из билда
 COPY --from=build /app/publish .
 
+EXPOSE 8081
+
+USER $APP_UID
+
 # Запуск скомпилированного AOT бинарного файла напрямую
 ENTRYPOINT ["./GmRelay.Bot"]

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

@@ -1,315 +0,0 @@
-using Dapper;
-using GmRelay.Shared.Domain;
-using Npgsql;
-using Telegram.Bot;
-using Telegram.Bot.Types.ReplyMarkups;
-
-namespace GmRelay.Bot.Features.Confirmation.HandleRsvp;
-
-public sealed record HandleRsvpCommand(
-    Guid SessionId,
-    long TelegramUserId,
-    string Status,
-    string CallbackQueryId,
-    long ChatId,
-    int MessageId);
-
-internal sealed record RsvpCounts(int Total, int Confirmed, int Declined);
-
-internal sealed record SessionContext(
-    string Title,
-    DateTime ScheduledAt,
-    string Status,
-    long GmTelegramId,
-    long TelegramChatId);
-
-internal sealed record ParticipantRsvp(
-    long TelegramId,
-    string DisplayName,
-    string? TelegramUsername,
-    string RsvpStatus);
-
-public sealed class HandleRsvpHandler(
-    NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
-    ILogger<HandleRsvpHandler> logger)
-{
-    public async Task HandleAsync(HandleRsvpCommand command, CancellationToken ct)
-    {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-        await using var transaction = await connection.BeginTransactionAsync(ct);
-
-        var participantExists = await connection.ExecuteScalarAsync<bool>(
-            """
-            SELECT EXISTS (
-                SELECT 1
-                FROM session_participants sp
-                JOIN players p ON p.id = sp.player_id
-                WHERE sp.session_id = @SessionId
-                  AND p.telegram_id = @TelegramUserId
-                  AND sp.is_gm = false
-                  AND sp.registration_status = @Active
-            )
-            """,
-            new { command.SessionId, command.TelegramUserId, Active = ParticipantRegistrationStatus.Active },
-            transaction);
-
-        if (!participantExists)
-        {
-            await bot.AnswerCallbackQuery(
-                callbackQueryId: command.CallbackQueryId,
-                text: "Вы не являетесь участником этой сессии.",
-                cancellationToken: ct);
-            return;
-        }
-
-        var updated = await connection.ExecuteAsync(
-            """
-            UPDATE session_participants
-            SET    rsvp_status  = @Status,
-                   responded_at = now()
-            WHERE  session_id = @SessionId
-              AND  player_id  = (SELECT id FROM players WHERE telegram_id = @TelegramUserId)
-              AND  registration_status = @Active
-              AND  rsvp_status != @Status
-            """,
-            new { command.SessionId, command.TelegramUserId, command.Status, Active = ParticipantRegistrationStatus.Active },
-            transaction);
-
-        if (updated == 0)
-        {
-            var alreadyText = command.Status == RsvpStatus.Confirmed
-                ? "Вы уже подтвердили участие."
-                : "Вы уже отказались от участия.";
-
-            await bot.AnswerCallbackQuery(
-                callbackQueryId: command.CallbackQueryId,
-                text: alreadyText,
-                cancellationToken: ct);
-            return;
-        }
-
-        var session = await connection.QuerySingleAsync<SessionContext>(
-            """
-            SELECT s.title,
-                   s.scheduled_at AS ScheduledAt,
-                   s.status AS Status,
-                   g.gm_telegram_id AS GmTelegramId,
-                   g.telegram_chat_id AS TelegramChatId
-            FROM sessions s
-            JOIN game_groups g ON g.id = s.group_id
-            WHERE s.id = @SessionId
-            """,
-            new { command.SessionId },
-            transaction);
-
-        if (command.Status == RsvpStatus.Declined)
-        {
-            var decision = RsvpFlowRules.Evaluate(command.Status, session.Status, totalParticipants: 0, confirmedParticipants: 0);
-
-            if (decision.ShouldRevertSessionToConfirmationSent)
-            {
-                await connection.ExecuteAsync(
-                    """
-                    UPDATE sessions
-                    SET    status = @ConfirmationSent, updated_at = now()
-                    WHERE  id = @SessionId AND status = @Confirmed
-                    """,
-                    new
-                    {
-                        command.SessionId,
-                        ConfirmationSent = SessionStatus.ConfirmationSent,
-                        Confirmed = SessionStatus.Confirmed
-                    },
-                    transaction);
-            }
-
-            var declinedPlayer = await connection.QuerySingleAsync<string>(
-                "SELECT display_name FROM players WHERE telegram_id = @TelegramUserId",
-                new { command.TelegramUserId },
-                transaction);
-
-            await transaction.CommitAsync(ct);
-
-            try
-            {
-                await bot.SendMessage(
-                    chatId: session.GmTelegramId,
-                    text: $"🚨 Отмена! {declinedPlayer} не сможет прийти на игру «{session.Title}».",
-                    cancellationToken: ct);
-            }
-            catch (Exception ex)
-            {
-                logger.LogWarning(ex, "Failed to send decline alert to GM for session {SessionId}", command.SessionId);
-            }
-
-            await bot.AnswerCallbackQuery(
-                callbackQueryId: command.CallbackQueryId,
-                text: decision.CallbackText,
-                cancellationToken: ct);
-        }
-        else
-        {
-            var counts = await connection.QuerySingleAsync<RsvpCounts>(
-                """
-                SELECT
-                    count(*)                                         AS Total,
-                    count(*) FILTER (WHERE rsvp_status = @Confirmed) AS Confirmed,
-                    count(*) FILTER (WHERE rsvp_status = @Declined)  AS Declined
-                FROM session_participants
-                WHERE session_id = @SessionId AND is_gm = false
-                  AND registration_status = @Active
-                """,
-                new
-                {
-                    command.SessionId,
-                    Confirmed = RsvpStatus.Confirmed,
-                    Declined = RsvpStatus.Declined,
-                    Active = ParticipantRegistrationStatus.Active
-                },
-                transaction);
-
-            var decision = RsvpFlowRules.Evaluate(command.Status, session.Status, counts.Total, counts.Confirmed);
-
-            if (decision.ShouldMarkSessionConfirmed)
-            {
-                await connection.ExecuteAsync(
-                    """
-                    UPDATE sessions
-                    SET    status = @Confirmed, updated_at = now()
-                    WHERE  id = @SessionId
-                    """,
-                    new { command.SessionId, Confirmed = SessionStatus.Confirmed },
-                    transaction);
-            }
-
-            await transaction.CommitAsync(ct);
-
-            if (decision.ShouldNotifyGroup)
-            {
-                try
-                {
-                    await bot.SendMessage(
-                        chatId: session.TelegramChatId,
-                        text: $"🎉 Игра «{session.Title}» подтверждена! Все участники на месте.",
-                        cancellationToken: ct);
-                }
-                catch (Exception ex)
-                {
-                    logger.LogWarning(ex, "Failed to send group confirmation for session {SessionId}", command.SessionId);
-                }
-            }
-
-            if (decision.ShouldNotifyGm)
-            {
-                try
-                {
-                    await bot.SendMessage(
-                        chatId: session.GmTelegramId,
-                        text: $"✅ Все подтвердили участие в «{session.Title}» ({session.ScheduledAt.FormatMoscow()} МСК).",
-                        cancellationToken: ct);
-                }
-                catch (Exception ex)
-                {
-                    logger.LogWarning(ex, "Failed to send GM confirmation for session {SessionId}", command.SessionId);
-                }
-            }
-
-            await bot.AnswerCallbackQuery(
-                callbackQueryId: command.CallbackQueryId,
-                text: decision.CallbackText,
-                cancellationToken: ct);
-        }
-
-        await UpdateConfirmationMessage(command, session, ct);
-    }
-
-    private async Task UpdateConfirmationMessage(HandleRsvpCommand command, SessionContext session, CancellationToken ct)
-    {
-        try
-        {
-            await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-            var participants = (await connection.QueryAsync<ParticipantRsvp>(
-                """
-                SELECT p.telegram_id AS TelegramId,
-                       p.display_name AS DisplayName,
-                       p.telegram_username AS TelegramUsername,
-                       sp.rsvp_status AS RsvpStatus
-                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 sp.responded_at NULLS LAST
-                """,
-                new { command.SessionId, Active = ParticipantRegistrationStatus.Active })).ToList();
-
-            var confirmed = participants.Where(p => p.RsvpStatus == RsvpStatus.Confirmed).ToList();
-            var declined = participants.Where(p => p.RsvpStatus == RsvpStatus.Declined).ToList();
-            var pending = participants.Where(p => p.RsvpStatus == RsvpStatus.Pending).ToList();
-
-            var lines = new List<string>
-            {
-                $"🎲 Подтвердите участие в «{session.Title}»",
-                $"📅 {session.ScheduledAt.FormatMoscow()} (МСК)",
-                string.Empty
-            };
-
-            foreach (var participant in confirmed)
-            {
-                lines.Add($"   ✅ {FormatName(participant)}");
-            }
-
-            foreach (var participant in declined)
-            {
-                lines.Add($"   ❌ ~~{FormatName(participant)}~~");
-            }
-
-            foreach (var participant in pending)
-            {
-                lines.Add($"   ⏳ {FormatName(participant)}");
-            }
-
-            lines.Add(string.Empty);
-
-            if (confirmed.Count == participants.Count)
-            {
-                lines.Add($"Статус: ✅ все подтвердили ({confirmed.Count}/{participants.Count})");
-            }
-            else if (declined.Count > 0)
-            {
-                lines.Add($"Статус: ⚠️ есть отказы ({confirmed.Count}/{participants.Count} подтвердили)");
-            }
-            else
-            {
-                lines.Add($"Статус: ожидаем подтверждения ({confirmed.Count}/{participants.Count})");
-            }
-
-            var text = string.Join("\n", lines);
-
-            var replyMarkup = confirmed.Count == participants.Count
-                ? null
-                : new InlineKeyboardMarkup([
-                    [
-                        InlineKeyboardButton.WithCallbackData("✅ Буду", $"rsvp:confirm:{command.SessionId}"),
-                        InlineKeyboardButton.WithCallbackData("❌ Не смогу", $"rsvp:decline:{command.SessionId}")
-                    ]
-                ]);
-
-            await bot.EditMessageText(
-                chatId: command.ChatId,
-                messageId: command.MessageId,
-                text: text,
-                replyMarkup: replyMarkup,
-                cancellationToken: ct);
-        }
-        catch (Exception ex)
-        {
-            logger.LogWarning(ex, "Failed to update confirmation message for session {SessionId}", command.SessionId);
-        }
-    }
-
-    private static string FormatName(ParticipantRsvp participant) =>
-        participant.TelegramUsername is not null ? $"@{participant.TelegramUsername}" : participant.DisplayName;
-}

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

@@ -1,149 +0,0 @@
-using Dapper;
-using GmRelay.Bot.Features.Notifications;
-using GmRelay.Shared.Domain;
-using Npgsql;
-using Telegram.Bot;
-using Telegram.Bot.Types.ReplyMarkups;
-
-namespace GmRelay.Bot.Features.Confirmation.SendConfirmation;
-
-// ── DTOs for Dapper mapping ──────────────────────────────────────────
-
-internal sealed record SessionInfo(
-    Guid Id,
-    string Title,
-    DateTime ScheduledAt,
-    Guid GroupId,
-    long TelegramChatId,
-    string NotificationMode);
-
-internal sealed record ParticipantInfo(
-    long TelegramId,
-    string DisplayName,
-    string? TelegramUsername);
-
-// ── Handler ──────────────────────────────────────────────────────────
-
-/// <summary>
-/// Sends the interactive confirmation message (inline keyboard) to the group chat.
-/// Called by SessionSchedulerService at T-24h.
-/// </summary>
-public sealed class SendConfirmationHandler(
-    NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
-    DirectSessionNotificationSender directSender,
-    ILogger<SendConfirmationHandler> logger)
-{
-    public async Task HandleAsync(Guid sessionId, CancellationToken ct)
-    {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-        // 1. Load session + group info
-        var session = await connection.QuerySingleOrDefaultAsync<SessionInfo>(
-            """
-            SELECT s.id, s.title, s.scheduled_at AS ScheduledAt, s.group_id AS GroupId,
-                   g.telegram_chat_id AS TelegramChatId,
-                   s.notification_mode AS NotificationMode
-            FROM sessions s
-            JOIN game_groups g ON g.id = s.group_id
-            WHERE s.id = @SessionId AND s.status = @Planned
-            """,
-            new { SessionId = sessionId, Planned = SessionStatus.Planned });
-
-        if (session is null)
-        {
-            logger.LogWarning("Session {SessionId} not found or not in Planned status", sessionId);
-            return;
-        }
-
-        // 2. Load non-GM participants
-        var participants = (await connection.QueryAsync<ParticipantInfo>(
-            """
-            SELECT p.telegram_id AS TelegramId,
-                   p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername
-            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 })).ToList();
-
-        if (participants.Count == 0)
-        {
-            logger.LogWarning("Session {SessionId} has no non-GM participants", sessionId);
-            return;
-        }
-
-        // 3. Build confirmation message
-        var playerList = string.Join("\n", participants.Select(p =>
-            $"   ⏳ {FormatPlayerName(p)}"));
-
-        var text = $"""
-            🎲 Подтвердите участие в «{session.Title}»
-            📅 {session.ScheduledAt.FormatMoscow()} (МСК)
-
-            {playerList}
-            
-            Статус: ожидаем подтверждения (0/{participants.Count})
-            """;
-
-        var keyboard = new InlineKeyboardMarkup([
-            [
-                InlineKeyboardButton.WithCallbackData("✅ Буду", $"rsvp:confirm:{sessionId}"),
-                InlineKeyboardButton.WithCallbackData("❌ Не смогу", $"rsvp:decline:{sessionId}")
-            ]
-        ]);
-
-        // 4. Send to group
-        var message = await bot.SendMessage(
-            chatId: session.TelegramChatId,
-            text: text,
-            replyMarkup: keyboard,
-            cancellationToken: ct);
-
-        // 5. Update session status and store message ID
-        await connection.ExecuteAsync(
-            """
-            UPDATE sessions
-            SET status = @Status,
-                confirmation_message_id = @MessageId,
-                updated_at = now()
-            WHERE id = @SessionId
-            """,
-            new
-            {
-                SessionId = sessionId,
-                Status = SessionStatus.ConfirmationSent,
-                MessageId = message.MessageId
-            });
-
-        var mode = SessionNotificationModeExtensions.FromDatabaseValue(session.NotificationMode);
-        if (mode.ShouldSendDirectMessages())
-        {
-            var directText = $"""
-                🎲 <b>Подтвердите участие в игре</b>
-
-                📌 <b>{System.Net.WebUtility.HtmlEncode(session.Title)}</b>
-                📅 {session.ScheduledAt.FormatMoscow()} (МСК)
-
-                Ответьте кнопкой в групповом сообщении расписания.
-                """;
-
-            await directSender.SendAsync(
-                participants.Select(p => new DirectNotificationRecipient(p.TelegramId, p.DisplayName)),
-                directText,
-                "confirmation",
-                sessionId,
-                ct);
-        }
-
-        logger.LogInformation(
-            "Confirmation sent for session {SessionId} ({Title}), message_id={MessageId}",
-            sessionId, session.Title, message.MessageId);
-    }
-
-    internal static string FormatPlayerName(ParticipantInfo p) =>
-        p.TelegramUsername is not null ? $"@{p.TelegramUsername}" : p.DisplayName;
-}

src/GmRelay.Bot/Features/Notifications/DirectSessionNotificationSender.cs

@@ -1,12 +1,12 @@
-using Telegram.Bot;
-using Telegram.Bot.Types.Enums;
+using GmRelay.Bot.Infrastructure.Telegram;
+using GmRelay.Shared.Platform;
 
 namespace GmRelay.Bot.Features.Notifications;
 
 public sealed record DirectNotificationRecipient(long TelegramId, string DisplayName);
 
 public sealed class DirectSessionNotificationSender(
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     ILogger<DirectSessionNotificationSender> logger)
 {
     public async Task SendAsync(
@@ -20,11 +20,11 @@ public sealed class DirectSessionNotificationSender(
         {
             try
             {
-                await bot.SendMessage(
-                    chatId: recipient.TelegramId,
-                    text: htmlText,
-                    parseMode: ParseMode.Html,
-                    cancellationToken: ct);
+                await messenger.SendPrivateMessageAsync(
+                    new PlatformPrivateMessage(
+                        TelegramPlatformIds.User(recipient.TelegramId, recipient.DisplayName),
+                        htmlText),
+                    ct);
             }
             catch (Exception ex)
             {

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

@@ -1,131 +0,0 @@
-using Dapper;
-using GmRelay.Bot.Features.Notifications;
-using GmRelay.Shared.Domain;
-using Npgsql;
-using Telegram.Bot;
-
-namespace GmRelay.Bot.Features.Reminders.SendJoinLink;
-
-// ── DTOs ─────────────────────────────────────────────────────────────
-
-internal sealed record JoinLinkSession(
-    Guid Id,
-    string Title,
-    string JoinLink,
-    DateTime ScheduledAt,
-    long TelegramChatId,
-    string NotificationMode);
-
-internal sealed record ConfirmedPlayer(
-    long TelegramId,
-    string DisplayName,
-    string? TelegramUsername);
-
-// ── Handler ──────────────────────────────────────────────────────────
-
-/// <summary>
-/// Sends the join link to the group chat at T-5min, tagging all confirmed players.
-/// Called by SessionSchedulerService.
-/// </summary>
-public sealed class SendJoinLinkHandler(
-    NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
-    DirectSessionNotificationSender directSender,
-    ILogger<SendJoinLinkHandler> logger)
-{
-    public async Task HandleAsync(Guid sessionId, CancellationToken ct)
-    {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-        // 1. Load session
-        var session = await connection.QuerySingleOrDefaultAsync<JoinLinkSession>(
-            """
-            SELECT s.id, s.title, s.join_link AS JoinLink, s.scheduled_at AS ScheduledAt,
-                   g.telegram_chat_id AS TelegramChatId,
-                   s.notification_mode AS NotificationMode
-            FROM sessions s
-            JOIN game_groups g ON g.id = s.group_id
-            WHERE s.id = @SessionId
-              AND s.status = @Confirmed
-              AND s.link_message_id IS NULL
-            """,
-            new { SessionId = sessionId, Confirmed = SessionStatus.Confirmed });
-
-        if (session is null)
-        {
-            logger.LogWarning("Session {SessionId} not eligible for join link", sessionId);
-            return;
-        }
-
-        // 2. Load confirmed players
-        var players = (await connection.QueryAsync<ConfirmedPlayer>(
-            """
-            SELECT p.telegram_id    AS TelegramId,
-                   p.display_name    AS DisplayName,
-                   p.telegram_username AS TelegramUsername
-            FROM session_participants sp
-            JOIN players p ON p.id = sp.player_id
-            WHERE sp.session_id = @SessionId
-              AND sp.rsvp_status = @Confirmed
-              AND sp.registration_status = @Active
-            """,
-            new
-            {
-                SessionId = sessionId,
-                Confirmed = RsvpStatus.Confirmed,
-                Active = ParticipantRegistrationStatus.Active
-            })).ToList();
-
-        // 3. Build message with player mentions
-        var mentions = string.Join(", ", players.Select(p =>
-            p.TelegramUsername is not null ? $"@{p.TelegramUsername}" : p.DisplayName));
-
-        var text = $"""
-            🎮 Игра «{session.Title}» начинается через 5 минут!
-
-            🔗 Ссылка на подключение:
-            {session.JoinLink}
-
-            Участники: {mentions}
-
-            Хорошей игры! 🎲
-            """;
-
-        // 4. Send
-        var message = await bot.SendMessage(
-            chatId: session.TelegramChatId,
-            text: text,
-            cancellationToken: ct);
-
-        // 5. Mark as sent (idempotent — link_message_id IS NULL guard in query)
-        await connection.ExecuteAsync(
-            """
-            UPDATE sessions
-            SET    link_message_id = @MessageId, updated_at = now()
-            WHERE  id = @SessionId AND link_message_id IS NULL
-            """,
-            new { SessionId = sessionId, MessageId = message.MessageId });
-
-        var mode = SessionNotificationModeExtensions.FromDatabaseValue(session.NotificationMode);
-        if (mode.ShouldSendDirectMessages())
-        {
-            var directText = $"""
-                🎮 <b>Игра начинается через 5 минут</b>
-
-                📌 <b>{System.Net.WebUtility.HtmlEncode(session.Title)}</b>
-                🔗 {System.Net.WebUtility.HtmlEncode(session.JoinLink)}
-                """;
-
-            await directSender.SendAsync(
-                players.Select(p => new DirectNotificationRecipient(p.TelegramId, p.DisplayName)),
-                directText,
-                "join-link",
-                sessionId,
-                ct);
-        }
-
-        logger.LogInformation(
-            "Join link sent for session {SessionId} ({Title}), message_id={MessageId}",
-            sessionId, session.Title, message.MessageId);
-    }
-}

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

@@ -1,10 +1,10 @@
 using Dapper;
 using GmRelay.Bot.Features.Notifications;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
-using Telegram.Bot;
-using Telegram.Bot.Types;
+using GmRelay.Bot.Infrastructure.Telegram;
 
 namespace GmRelay.Bot.Features.Sessions.CreateSession;
 
@@ -13,14 +13,15 @@ public sealed record CancelSessionCommand(
     long TelegramUserId,
     string CallbackQueryId,
     long ChatId,
+    int? MessageThreadId,
     int MessageId);
 
 // DTOs for AOT compilation
-internal sealed record CancelSessionInfoDto(string Title, Guid BatchId, bool CanManage, string NotificationMode);
+internal sealed record CancelSessionInfoDto(string Title, Guid BatchId, int? BatchMessageId, bool CanManage, string NotificationMode);
 
 public sealed class CancelSessionHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     DirectSessionNotificationSender directSender,
     ILogger<CancelSessionHandler> logger)
 {
@@ -28,12 +29,13 @@ 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 управляющий данной группы.
         var session = await connection.QuerySingleOrDefaultAsync<CancelSessionInfoDto>(
             """
             SELECT s.title AS Title,
                    s.batch_id AS BatchId,
+                   s.batch_message_id AS BatchMessageId,
                    s.notification_mode AS NotificationMode,
                    EXISTS (
                        SELECT 1
@@ -49,13 +51,13 @@ public sealed class CancelSessionHandler(
 
         if (session == null)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия не найдена.", cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Сессия не найдена.", ct);
             return;
         }
 
         if (!session.CanManage)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только owner или co-GM может отменять сессию.", showAlert: true, cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Только owner или co-GM может отменять сессию.", ct, showAlert: true);
             return;
         }
 
@@ -67,7 +69,7 @@ public sealed class CancelSessionHandler(
 
         // 3. Загружаем весь батч для перерисовки
         var batchSessions = await connection.QueryAsync<SessionBatchDto>(
-            @"SELECT id as SessionId, scheduled_at as ScheduledAt, status as Status, max_players as MaxPlayers
+            @"SELECT id as SessionId, scheduled_at as ScheduledAt, status as Status, max_players as MaxPlayers, join_link as JoinLink
               FROM sessions
               WHERE batch_id = @BatchId
               ORDER BY scheduled_at",
@@ -101,22 +103,25 @@ public sealed class CancelSessionHandler(
         await transaction.CommitAsync(ct);
 
         // 4. Перерисовываем сообщение
-        var renderResult = SessionBatchRenderer.Render(session.Title, batchSessions.ToList(), batchParticipants.ToList());
+        var view = SessionBatchViewBuilder.Build(session.Title, batchSessions.ToList(), batchParticipants.ToList());
 
         try
         {
-            await bot.EditMessageText(
-                chatId: command.ChatId,
-                messageId: command.MessageId,
-                text: renderResult.Text,
-                parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                replyMarkup: renderResult.Markup, 
-                cancellationToken: ct);
+            var messageId = session.BatchMessageId ?? command.MessageId;
+            await messenger.UpdateScheduleAsync(
+                new PlatformScheduleMessage(
+                    TelegramPlatformIds.Group(command.ChatId, command.MessageThreadId),
+                    view,
+                    TelegramPlatformIds.Message(command.ChatId, command.MessageThreadId, messageId)),
+                ct);
+
+            await AnswerAsync(command.CallbackQueryId, "Сессия отменена!", ct);
 
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия отменена!", cancellationToken: ct);
-            
             // Опционально: написать отдельное сообщение в чат
-            await bot.SendMessage(command.ChatId, $"❌ <b>Внимание!</b> Сессия \"{System.Net.WebUtility.HtmlEncode(session.Title)}\" отменена.", parseMode: Telegram.Bot.Types.Enums.ParseMode.Html, cancellationToken: ct);
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(command.ChatId, command.MessageThreadId),
+                $"❌ <b>Внимание!</b> Сессия \"{System.Net.WebUtility.HtmlEncode(session.Title)}\" отменена.",
+                ct);
 
             var mode = SessionNotificationModeExtensions.FromDatabaseValue(session.NotificationMode);
             if (mode.ShouldSendDirectMessages())
@@ -132,7 +137,10 @@ public sealed class CancelSessionHandler(
         catch (Exception ex)
         {
             logger.LogError(ex, "Failed to update batch message after cancelling session {SessionId}", command.SessionId);
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Ошибка при обновлении сообщения.", cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Ошибка при обновлении сообщения.", ct);
         }
     }
+
+    private Task AnswerAsync(string callbackQueryId, string text, CancellationToken ct, bool showAlert = false) =>
+        messenger.AnswerInteractionAsync(new PlatformInteractionReply(callbackQueryId, text, showAlert), ct);
 }

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

@@ -4,6 +4,7 @@ using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types;
+using GmRelay.Bot.Infrastructure.Telegram;
 
 namespace GmRelay.Bot.Features.Sessions.CreateSession;
 
@@ -16,7 +17,7 @@ public sealed class CreateSessionHandler(
 {
     public async Task HandleAsync(Message message, CancellationToken cancellationToken)
     {
-        var parseResult = NewSessionCommandParser.Parse(message.Text, DateTimeOffset.UtcNow);
+        var parseResult = NewSessionCommandParser.Parse(message.Text ?? message.Caption, DateTimeOffset.UtcNow);
 
         foreach (var timeInput in parseResult.PastTimeInputs)
         {
@@ -54,13 +55,14 @@ public sealed class CreateSessionHandler(
         {
             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\n\nДля повтора можно указать одну дату и строки:\nИгр: 4\nИнтервал: 7",
+                text: "❌ Не удалось распознать формат. Пожалуйста, используйте шаблон:\n\n/newsession\nНазвание: My Game\nВремя: 15.05.2026 19:30\nВремя: 22.05.2026 19:30\nМест: 4\nСсылка: https://link\nКартинка: https://cover\n\nДля повтора можно указать одну дату и строки:\nИгр: 4\nИнтервал: 7",
                 cancellationToken: cancellationToken);
             return;
         }
 
         var title = parseResult.Title!;
         var link = parseResult.Link!;
+        var imageReference = GetBatchImageReference(message, parseResult.ImageUrl);
         var gmId = message.From!.Id;
         var gmName = message.From.FirstName + (string.IsNullOrEmpty(message.From.LastName) ? string.Empty : $" {message.From.LastName}");
         var gmUsername = message.From.Username;
@@ -75,11 +77,14 @@ public sealed class CreateSessionHandler(
         {
             await connection.ExecuteAsync(
                 """
-                INSERT INTO players (telegram_id, display_name, telegram_username)
-                VALUES (@TgId, @Name, @Username)
+                INSERT INTO players (telegram_id, display_name, telegram_username, platform, external_user_id, external_username)
+                VALUES (@TgId, @Name, @Username, 'Telegram', @TgId::TEXT, @Username)
                 ON CONFLICT (telegram_id) DO UPDATE
                 SET display_name = EXCLUDED.display_name,
-                    telegram_username = EXCLUDED.telegram_username;
+                    telegram_username = EXCLUDED.telegram_username,
+                    platform = COALESCE(players.platform, 'Telegram'),
+                    external_user_id = COALESCE(players.external_user_id, EXCLUDED.telegram_id::TEXT),
+                    external_username = COALESCE(players.external_username, EXCLUDED.telegram_username);
                 """,
                 new { TgId = gmId, Name = gmName, Username = gmUsername },
                 transaction);
@@ -92,10 +97,10 @@ public sealed class CreateSessionHandler(
                            FROM group_managers gm
                            JOIN players p ON p.id = gm.player_id
                            WHERE gm.group_id = g.id
-                             AND p.telegram_id = @GmId
+                             AND COALESCE(p.external_user_id, p.telegram_id::TEXT) = @GmId::TEXT
                        ) AS CanManage
                 FROM game_groups g
-                WHERE g.telegram_chat_id = @ChatId
+                WHERE COALESCE(g.external_group_id, g.telegram_chat_id::TEXT) = @ChatId::TEXT
                 """,
                 new { ChatId = chatId, GmId = gmId },
                 transaction);
@@ -105,8 +110,8 @@ public sealed class CreateSessionHandler(
             {
                 groupId = await connection.ExecuteScalarAsync<Guid>(
                     """
-                    INSERT INTO game_groups (telegram_chat_id, name, gm_telegram_id)
-                    VALUES (@ChatId, @ChatName, @GmId)
+                    INSERT INTO game_groups (telegram_chat_id, name, gm_telegram_id, platform, external_group_id)
+                    VALUES (@ChatId, @ChatName, @GmId, 'Telegram', @ChatId::TEXT)
                     RETURNING id;
                     """,
                     new { ChatId = chatId, ChatName = chatTitle, GmId = gmId },
@@ -117,7 +122,7 @@ public sealed class CreateSessionHandler(
                     INSERT INTO group_managers (group_id, player_id, role)
                     SELECT @GroupId, p.id, @OwnerRole
                     FROM players p
-                    WHERE p.telegram_id = @GmId
+                    WHERE COALESCE(p.external_user_id, p.telegram_id::TEXT) = @GmId::TEXT
                     ON CONFLICT (group_id, player_id) DO NOTHING
                     """,
                     new { GroupId = groupId, GmId = gmId, OwnerRole = GroupManagerRoleExtensions.OwnerValue },
@@ -142,14 +147,31 @@ public sealed class CreateSessionHandler(
                     transaction);
             }
 
-            int? messageThreadId = null;
-            if (message.Chat.IsForum)
+            var topicDestination = TelegramTopicRouting.ResolveNewScheduleDestination(
+                message.Chat.IsForum,
+                message.MessageThreadId);
+            var messageThreadId = topicDestination.MessageThreadId;
+            var topicCreatedByBot = topicDestination.TopicCreatedByBot;
+            if (topicDestination.ShouldCreateForumTopic)
             {
-                var topic = await botClient.CreateForumTopic(
-                    chatId: chatId,
-                    name: $"🎲 Игры: {title}",
-                    cancellationToken: cancellationToken);
-                messageThreadId = topic.MessageThreadId;
+                try
+                {
+                    var topic = await botClient.CreateForumTopic(
+                        chatId: chatId,
+                        name: $"🎲 Игры: {title}",
+                        cancellationToken: cancellationToken);
+                    messageThreadId = topic.MessageThreadId;
+                }
+                catch (Telegram.Bot.Exceptions.ApiRequestException ex)
+                    when (TelegramTopicRouting.IsMissingForumTopicRightsError(ex.Message))
+                {
+                    await transaction.RollbackAsync(cancellationToken);
+                    await botClient.SendMessage(
+                        chatId,
+                        TelegramTopicRouting.MissingForumTopicRightsMessage,
+                        cancellationToken: cancellationToken);
+                    return;
+                }
             }
 
             var batchId = Guid.NewGuid();
@@ -159,8 +181,8 @@ public sealed class CreateSessionHandler(
             {
                 var sessionId = await connection.ExecuteScalarAsync<Guid>(
                     """
-                    INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id, max_players)
-                    VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @ThreadId, @MaxPlayers)
+                    INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id, topic_created_by_bot, max_players)
+                    VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @ThreadId, @TopicCreatedByBot, @MaxPlayers)
                     RETURNING id;
                     """,
                     new
@@ -171,26 +193,78 @@ public sealed class CreateSessionHandler(
                         Link = link,
                         ScheduledAt = scheduledAt,
                         ThreadId = messageThreadId,
+                        TopicCreatedByBot = topicCreatedByBot,
                         MaxPlayers = parseResult.MaxPlayers,
                         Status = SessionStatus.Planned
                     },
                     transaction);
 
-                sessions.Add(new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, parseResult.MaxPlayers));
+                sessions.Add(new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, parseResult.MaxPlayers, link));
             }
 
             await transaction.CommitAsync(cancellationToken);
             logger.LogInformation("Создан батч {BatchId} с {Count} сессиями в группе {GroupId}", batchId, sessions.Count, groupId);
 
-            var renderResult = SessionBatchRenderer.Render(title, sessions, Array.Empty<ParticipantBatchDto>());
+            var view = SessionBatchViewBuilder.Build(title, sessions, Array.Empty<ParticipantBatchDto>());
+            var renderResult = TelegramSessionBatchRenderer.Render(view);
 
-            var batchMessage = await botClient.SendMessage(
-                chatId: chatId,
-                messageThreadId: messageThreadId,
-                text: renderResult.Text,
-                parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                replyMarkup: renderResult.Markup,
-                cancellationToken: cancellationToken);
+            Message batchMessage;
+
+            if (imageReference is not null && renderResult.Text.Length <= 1024)
+            {
+                // Картинка + расписание умещаются в одном Telegram-фото с подписью
+                try
+                {
+                    batchMessage = await botClient.SendPhoto(
+                        chatId: chatId,
+                        messageThreadId: messageThreadId,
+                        photo: InputFile.FromString(imageReference),
+                        caption: renderResult.Text,
+                        parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
+                        replyMarkup: renderResult.Markup,
+                        cancellationToken: cancellationToken);
+                }
+                catch (Exception ex)
+                {
+                    logger.LogWarning(ex, "Не удалось отправить картинку для батча {BatchId}, отправляем текстом", batchId);
+                    batchMessage = await botClient.SendMessage(
+                        chatId: chatId,
+                        messageThreadId: messageThreadId,
+                        text: renderResult.Text,
+                        parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
+                        replyMarkup: renderResult.Markup,
+                        cancellationToken: cancellationToken);
+                }
+            }
+            else
+            {
+                // Текст слишком длинный для caption — fallback на два сообщения
+                if (imageReference is not null)
+                {
+                    try
+                    {
+                        await botClient.SendPhoto(
+                            chatId: chatId,
+                            messageThreadId: messageThreadId,
+                            photo: InputFile.FromString(imageReference),
+                            caption: $"🎲 {System.Net.WebUtility.HtmlEncode(title)}",
+                            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
+                            cancellationToken: cancellationToken);
+                    }
+                    catch (Exception ex)
+                    {
+                        logger.LogWarning(ex, "Не удалось отправить картинку для батча {BatchId}", batchId);
+                    }
+                }
+
+                batchMessage = await botClient.SendMessage(
+                    chatId: chatId,
+                    messageThreadId: messageThreadId,
+                    text: renderResult.Text,
+                    parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
+                    replyMarkup: renderResult.Markup,
+                    cancellationToken: cancellationToken);
+            }
 
             await connection.ExecuteAsync(
                 "UPDATE sessions SET batch_message_id = @MsgId WHERE batch_id = @BatchId",
@@ -215,4 +289,20 @@ public sealed class CreateSessionHandler(
             await botClient.SendMessage(chatId, "💥 Произошла ошибка базы данных при создании сессии.", cancellationToken: cancellationToken);
         }
     }
+
+    internal static string? GetBatchImageReference(Message message, string? parsedImageUrl)
+    {
+        var attachedPhotoFileId = message.Photo?
+            .OrderByDescending(photo => photo.FileSize ?? 0)
+            .ThenByDescending(photo => photo.Width * photo.Height)
+            .FirstOrDefault()
+            ?.FileId;
+
+        if (!string.IsNullOrWhiteSpace(attachedPhotoFileId))
+        {
+            return attachedPhotoFileId;
+        }
+
+        return string.IsNullOrWhiteSpace(parsedImageUrl) ? null : parsedImageUrl.Trim();
+    }
 }

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

@@ -5,6 +5,7 @@ namespace GmRelay.Bot.Features.Sessions.CreateSession;
 internal sealed record NewSessionParseResult(
     string? Title,
     string? Link,
+    string? ImageUrl,
     int? MaxPlayers,
     IReadOnlyList<DateTimeOffset> ScheduledTimes,
     IReadOnlyList<string> PastTimeInputs,
@@ -27,6 +28,12 @@ internal static class NewSessionCommandParser
     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:";
+    private static readonly string[] ImagePrefixes =
+    [
+        "\u041a\u0430\u0440\u0442\u0438\u043d\u043a\u0430:",
+        "\u0418\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435:",
+        "\u041e\u0431\u043b\u043e\u0436\u043a\u0430:"
+    ];
     private static readonly string[] SeatLimitPrefixes =
     [
         "\u041c\u0435\u0441\u0442:",
@@ -49,6 +56,7 @@ internal static class NewSessionCommandParser
     {
         string? title = null;
         string? link = null;
+        string? imageUrl = null;
         int? maxPlayers = null;
         int? recurringCount = null;
         var recurringIntervalDays = 7;
@@ -72,6 +80,14 @@ internal static class NewSessionCommandParser
                 continue;
             }
 
+            var imagePrefix = ImagePrefixes.FirstOrDefault(prefix =>
+                line.StartsWith(prefix, StringComparison.OrdinalIgnoreCase));
+            if (imagePrefix is not null)
+            {
+                imageUrl = line[imagePrefix.Length..].Trim();
+                continue;
+            }
+
             var seatLimitPrefix = SeatLimitPrefixes.FirstOrDefault(prefix =>
                 line.StartsWith(prefix, StringComparison.OrdinalIgnoreCase));
             if (seatLimitPrefix is not null)
@@ -157,6 +173,7 @@ internal static class NewSessionCommandParser
         return new NewSessionParseResult(
             title,
             link,
+            imageUrl,
             maxPlayers,
             scheduledTimes,
             pastTimeInputs,

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

@@ -1,8 +1,9 @@
 using Dapper;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
-using Telegram.Bot;
+using GmRelay.Bot.Infrastructure.Telegram;
 
 namespace GmRelay.Bot.Features.Sessions.CreateSession;
 
@@ -13,12 +14,12 @@ public sealed record PromoteWaitlistedPlayerCommand(
     long ChatId,
     int MessageId);
 
-internal sealed record PromoteWaitlistSessionDto(string Title, Guid BatchId, bool CanManage, int? MaxPlayers);
+internal sealed record PromoteWaitlistSessionDto(string Title, Guid BatchId, int? BatchMessageId, bool CanManage, int? MaxPlayers);
 internal sealed record WaitlistedParticipantDto(Guid ParticipantRowId, string DisplayName);
 
 public sealed class PromoteWaitlistedPlayerHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     ILogger<PromoteWaitlistedPlayerHandler> logger)
 {
     public async Task HandleAsync(PromoteWaitlistedPlayerCommand command, CancellationToken ct)
@@ -33,6 +34,7 @@ public sealed class PromoteWaitlistedPlayerHandler(
                 """
                 SELECT s.title AS Title,
                        s.batch_id AS BatchId,
+                       s.batch_message_id AS BatchMessageId,
                        s.max_players AS MaxPlayers,
                        EXISTS (
                            SELECT 1
@@ -51,14 +53,14 @@ public sealed class PromoteWaitlistedPlayerHandler(
             if (session is null)
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия не найдена.", cancellationToken: ct);
+                await AnswerAsync(command.CallbackQueryId, "Сессия не найдена.", ct);
                 return;
             }
 
             if (!session.CanManage)
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Только owner или co-GM может поднимать игроков из листа ожидания.", showAlert: true, cancellationToken: ct);
+                await AnswerAsync(command.CallbackQueryId, "Только owner или co-GM может поднимать игроков из листа ожидания.", ct, showAlert: true);
                 return;
             }
 
@@ -87,14 +89,14 @@ public sealed class PromoteWaitlistedPlayerHandler(
             if (waitlistedParticipants == 0)
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Лист ожидания пуст.", cancellationToken: ct);
+                await AnswerAsync(command.CallbackQueryId, "Лист ожидания пуст.", ct);
                 return;
             }
 
             if (!SessionCapacityRules.CanPromoteWaitlistedPlayer(session.MaxPlayers, activeParticipants, waitlistedParticipants))
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Нет свободных мест. Увеличьте лимит перед повышением игрока.", showAlert: true, cancellationToken: ct);
+                await AnswerAsync(command.CallbackQueryId, "Нет свободных мест. Увеличьте лимит перед повышением игрока.", ct, showAlert: true);
                 return;
             }
 
@@ -135,7 +137,8 @@ public sealed class PromoteWaitlistedPlayerHandler(
                 SELECT id AS SessionId,
                        scheduled_at AS ScheduledAt,
                        status AS Status,
-                       max_players AS MaxPlayers
+                       max_players AS MaxPlayers,
+                       join_link AS JoinLink
                 FROM sessions
                 WHERE batch_id = @BatchId
                 ORDER BY scheduled_at
@@ -161,17 +164,16 @@ public sealed class PromoteWaitlistedPlayerHandler(
             await transaction.CommitAsync(ct);
             transactionCommitted = true;
 
-            var renderResult = SessionBatchRenderer.Render(session.Title, batchSessions, batchParticipants);
+            var view = SessionBatchViewBuilder.Build(session.Title, batchSessions, batchParticipants);
+            var messageId = session.BatchMessageId ?? command.MessageId;
+            await messenger.UpdateScheduleAsync(
+                new PlatformScheduleMessage(
+                    TelegramPlatformIds.Group(command.ChatId),
+                    view,
+                    TelegramPlatformIds.Message(command.ChatId, threadId: null, messageId)),
+                ct);
 
-            await bot.EditMessageText(
-                chatId: command.ChatId,
-                messageId: command.MessageId,
-                text: renderResult.Text,
-                parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                replyMarkup: renderResult.Markup,
-                cancellationToken: ct);
-
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, $"{promoted.DisplayName} переведен(а) в основной состав.", cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, $"{promoted.DisplayName} переведен(а) в основной состав.", ct);
         }
         catch (Exception ex)
         {
@@ -184,7 +186,10 @@ public sealed class PromoteWaitlistedPlayerHandler(
             var errorText = transactionCommitted
                 ? "Игрок повышен, но не удалось обновить сообщение расписания."
                 : "Ошибка при обновлении листа ожидания.";
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, errorText, cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, errorText, ct);
         }
     }
+
+    private Task AnswerAsync(string callbackQueryId, string text, CancellationToken ct, bool showAlert = false) =>
+        messenger.AnswerInteractionAsync(new PlatformInteractionReply(callbackQueryId, text, showAlert), ct);
 }

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

@@ -1,8 +1,10 @@
 using System.Text;
 using Dapper;
+using GmRelay.Bot.Infrastructure.Telegram;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Configuration;
 using Npgsql;
-using Telegram.Bot;
 using Telegram.Bot.Types;
 
 namespace GmRelay.Bot.Features.Sessions.ExportCalendar;
@@ -11,30 +13,31 @@ internal sealed record CalendarSessionDto(Guid Id, string Title, DateTime Schedu
 
 public sealed class ExportCalendarHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient botClient)
+    IPlatformMessenger messenger,
+    IConfiguration configuration)
 {
     public async Task HandleAsync(Message message, CancellationToken cancellationToken)
     {
         await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
 
         var sessions = await connection.QueryAsync<CalendarSessionDto>(
-            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt
-              FROM sessions s
-              JOIN game_groups g ON s.group_id = g.id
-              WHERE g.telegram_chat_id = @ChatId 
-                AND s.status = @Planned
-                AND s.scheduled_at > NOW()
-              ORDER BY s.scheduled_at ASC",
+            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt"
+            + " FROM sessions s"
+            + " JOIN game_groups g ON s.group_id = g.id"
+            + " WHERE g.telegram_chat_id = @ChatId"
+            + " AND s.status = @Planned"
+            + " AND s.scheduled_at > NOW()"
+            + " ORDER BY s.scheduled_at ASC",
             new { ChatId = message.Chat.Id, Planned = SessionStatus.Planned });
 
         var sessionsList = sessions.ToList();
 
         if (sessionsList.Count == 0)
         {
-            await botClient.SendMessage(
-                chatId: message.Chat.Id,
-                text: "📭 У этой группы нет запланированных сессий для экспорта.",
-                cancellationToken: cancellationToken);
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId),
+                "📭 У этой группы нет запланированных сессий для экспорта.",
+                cancellationToken);
             return;
         }
 
@@ -54,24 +57,57 @@ public sealed class ExportCalendarHandler(
             sb.AppendLine($"DTSTART:{dtStart}");
             sb.AppendLine($"DTEND:{dtEnd}");
             sb.AppendLine($"SUMMARY:{s.Title}");
-            // Escape special chars according to iCal standards (RFC 5545) -- simple escaping for summary
-            // In a fuller implementation we'd escape \r\n, commas, etc. But titles are mostly plain text.
             sb.AppendLine("END:VEVENT");
         }
 
         sb.AppendLine("END:VCALENDAR");
 
         var bytes = Encoding.UTF8.GetBytes(sb.ToString());
-        using var stream = new MemoryStream(bytes);
 
-        var inputFile = InputFile.FromStream(stream, "schedule.ics");
 
-        await botClient.SendDocument(
-             chatId: message.Chat.Id,
-             document: inputFile,
-             caption: "📅 <b>Ваш календарь игр!</b>\nОткройте файл на устройстве, чтобы добавить события в свой календарь.",
-             parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-             messageThreadId: message.MessageThreadId,
-             cancellationToken: cancellationToken);
+        // Create calendar subscription
+        string? subscriptionUrl = null;
+        var baseUrl = configuration["Web:BaseUrl"];
+        var senderId = message.From?.Id;
+        if (!string.IsNullOrWhiteSpace(baseUrl) && senderId.HasValue)
+        {
+            try
+            {
+                var token = Guid.NewGuid().ToString("N");
+                var groupId = await connection.QueryFirstOrDefaultAsync<Guid?>(
+                    @"SELECT id FROM game_groups WHERE telegram_chat_id = @ChatId",
+                    new { ChatId = message.Chat.Id });
+
+                await connection.ExecuteAsync(
+                    @"INSERT INTO calendar_subscriptions (id, token, user_telegram_id, group_id, filter_type, created_at, expires_at)
+                      VALUES (gen_random_uuid(), @token, @userTelegramId, @groupId, @filterType, now(), NULL)",
+                    new { token, userTelegramId = senderId.Value, groupId, filterType = (int)CalendarSubscriptionFilter.SpecificGroup });
+
+                subscriptionUrl = $"{baseUrl.TrimEnd('/')}/calendar/{token}.ics";
+            }
+            catch
+            {
+                // Non-critical: if subscription creation fails, still send the file
+            }
+        }
+
+        var actions = subscriptionUrl is not null
+            ? new[]
+            {
+                new PlatformMessageAction(
+                    "calendar-subscription",
+                    "🔗 Подписаться на календарь",
+                    subscriptionUrl)
+            }
+            : Array.Empty<PlatformMessageAction>();
+
+        await messenger.SendCalendarFileAsync(
+            new PlatformCalendarFile(
+                TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId),
+                "schedule.ics",
+                bytes,
+                "📅 <b>Ваш календарь игр!</b>\nОткройте файл на устройстве, чтобы добавить события в свой календарь.",
+                actions),
+            cancellationToken);
     }
 }

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

@@ -1,6 +1,7 @@
 using Dapper;
 using Npgsql;
 using Telegram.Bot;
+using GmRelay.Bot.Infrastructure.Telegram;
 using GmRelay.Shared.Domain;
 
 namespace GmRelay.Bot.Features.Sessions.ListSessions;
@@ -12,7 +13,13 @@ public sealed record DeleteSessionCommand(
     long ChatId,
     int MessageId);
 
-internal sealed record DeleteSessionInfoDto(string Title, Guid BatchId, bool CanManage, int? ThreadId);
+internal sealed record DeleteSessionInfoDto(
+    string Title,
+    Guid BatchId,
+    Guid GroupId,
+    bool CanManage,
+    int? ThreadId,
+    bool TopicCreatedByBot);
 
 public sealed class DeleteSessionHandler(
     NpgsqlDataSource dataSource,
@@ -29,7 +36,9 @@ public sealed class DeleteSessionHandler(
             """
             SELECT s.title AS Title,
                    s.batch_id AS BatchId,
+                   s.group_id AS GroupId,
                    s.thread_id AS ThreadId,
+                   s.topic_created_by_bot AS TopicCreatedByBot,
                    EXISTS (
                        SELECT 1
                        FROM group_managers gm
@@ -57,15 +66,23 @@ public sealed class DeleteSessionHandler(
         // 2. Delete session
         await connection.ExecuteAsync("DELETE FROM sessions WHERE id = @Id", new { Id = command.SessionId }, transaction);
 
-        // 3. Check if any sessions are left in the batch
-        var remainingInBatch = await connection.ExecuteScalarAsync<int>(
-            "SELECT COUNT(*) FROM sessions WHERE batch_id = @BatchId",
-            new { BatchId = session.BatchId }, transaction);
+        var remainingInTopic = session.ThreadId.HasValue
+            ? await connection.ExecuteScalarAsync<int>(
+                """
+                SELECT COUNT(*)
+                FROM sessions
+                WHERE group_id = @GroupId
+                  AND thread_id = @ThreadId
+                """,
+                new { session.GroupId, ThreadId = session.ThreadId.Value },
+                transaction)
+            : 0;
 
         await transaction.CommitAsync(ct);
 
-        // 4. If no sessions left and we have a forum topic, delete the topic
-        if (remainingInBatch == 0 && session.ThreadId.HasValue)
+        // 4. If no sessions are left in a bot-owned forum topic, delete the topic.
+        if (session.ThreadId.HasValue &&
+            TelegramTopicRouting.ShouldDeleteForumTopic(session.TopicCreatedByBot, remainingInTopic))
         {
             try
             {
@@ -113,34 +130,20 @@ public sealed class DeleteSessionHandler(
 
         if (sessionsList.Count == 0)
         {
-            try { await bot.EditMessageText(command.ChatId, command.MessageId, "📭 В этой группе нет предстоящих игр.", cancellationToken: ct); } catch {}
+            try { await bot.EditMessageText(command.ChatId, command.MessageId, "📭 В этой группе нет предстоящих игр.", cancellationToken: ct); } catch { }
             return;
         }
 
-        var text = "📅 <b>Ближайшие игры:</b>\n\n";
-        foreach (var s in sessionsList)
-        {
-            var seats = s.MaxPlayers.HasValue
-                ? $"{s.PlayerCount}/{s.MaxPlayers.Value}"
-                : s.PlayerCount.ToString(System.Globalization.CultureInfo.InvariantCulture);
-            var waitlist = s.WaitlistCount > 0 ? $", ожидание: {s.WaitlistCount}" : string.Empty;
-            text += $"🔹 <b>{s.ScheduledAt.FormatMoscow()}</b> — {System.Net.WebUtility.HtmlEncode(s.Title)} (Места: {seats}{waitlist})\n";
-        }
-
-        var canManage = sessionsList.First().CanManage;
-        var keyboard = canManage
-            ? new Telegram.Bot.Types.ReplyMarkups.InlineKeyboardMarkup(
-                sessionsList.Select(s => new[] { Telegram.Bot.Types.ReplyMarkups.InlineKeyboardButton.WithCallbackData($"🗑 Удалить {s.ScheduledAt.FormatMoscowShort()}", $"delete_session:{s.Id}") }))
-            : null;
+        var renderResult = SessionListMessageRenderer.Render(sessionsList);
 
         try
         {
             await bot.EditMessageText(
                 command.ChatId,
                 command.MessageId,
-                text,
+                renderResult.Text,
                 parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                replyMarkup: keyboard,
+                replyMarkup: renderResult.Markup,
                 cancellationToken: ct);
         }
         catch (Exception ex)

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

@@ -3,11 +3,60 @@ using GmRelay.Shared.Domain;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types;
+using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Features.Sessions.ListSessions;
 
 internal sealed record SessionListItemDto(Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers, int PlayerCount, int WaitlistCount, bool CanManage);
 
+internal static class SessionListMessageRenderer
+{
+    public static (string Text, InlineKeyboardMarkup? Markup) Render(IReadOnlyList<SessionListItemDto> sessions)
+    {
+        var text = "📅 <b>Ближайшие игры:</b>\n\n";
+        foreach (var session in sessions)
+        {
+            var seats = session.MaxPlayers.HasValue
+                ? $"{session.PlayerCount}/{session.MaxPlayers.Value}"
+                : session.PlayerCount.ToString(System.Globalization.CultureInfo.InvariantCulture);
+            var waitlist = session.WaitlistCount > 0 ? $", ожидание: {session.WaitlistCount}" : string.Empty;
+            text += $"🔹 <b>{session.ScheduledAt.FormatMoscow()}</b> — {System.Net.WebUtility.HtmlEncode(session.Title)} (Места: {seats}{waitlist})\n";
+        }
+
+        var canManage = sessions.Count > 0 && sessions.First().CanManage;
+        if (!canManage)
+        {
+            return (text, null);
+        }
+
+        var buttons = new List<InlineKeyboardButton[]>();
+        foreach (var session in sessions)
+        {
+            var dateTitle = session.ScheduledAt.FormatMoscowShort();
+            buttons.Add(
+            [
+                InlineKeyboardButton.WithCallbackData($"❌ {dateTitle}", $"cancel_session:{session.Id}"),
+                InlineKeyboardButton.WithCallbackData($"⏰ {dateTitle}", $"reschedule_session:{session.Id}")
+            ]);
+
+            if (SessionCapacityRules.CanPromoteWaitlistedPlayer(session.MaxPlayers, session.PlayerCount, session.WaitlistCount))
+            {
+                buttons.Add(
+                [
+                    InlineKeyboardButton.WithCallbackData($"⬆️ Из ожидания {dateTitle}", $"promote_waitlist:{session.Id}")
+                ]);
+            }
+
+            buttons.Add(
+            [
+                InlineKeyboardButton.WithCallbackData($"🗑 Удалить {dateTitle}", $"delete_session:{session.Id}")
+            ]);
+        }
+
+        return (text, new InlineKeyboardMarkup(buttons));
+    }
+}
+
 public sealed class ListSessionsHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient botClient)
@@ -53,27 +102,13 @@ public sealed class ListSessionsHandler(
             return;
         }
 
-        var text = "📅 <b>Ближайшие игры:</b>\n\n";
-        foreach (var s in sessionsList)
-        {
-            var seats = s.MaxPlayers.HasValue
-                ? $"{s.PlayerCount}/{s.MaxPlayers.Value}"
-                : s.PlayerCount.ToString(System.Globalization.CultureInfo.InvariantCulture);
-            var waitlist = s.WaitlistCount > 0 ? $", ожидание: {s.WaitlistCount}" : string.Empty;
-            text += $"🔹 <b>{s.ScheduledAt.FormatMoscow()}</b> — {System.Net.WebUtility.HtmlEncode(s.Title)} (Места: {seats}{waitlist})\n";
-        }
-
-        var canManage = sessionsList.First().CanManage;
-        var keyboard = canManage
-            ? new Telegram.Bot.Types.ReplyMarkups.InlineKeyboardMarkup(
-                sessionsList.Select(s => new[] { Telegram.Bot.Types.ReplyMarkups.InlineKeyboardButton.WithCallbackData($"🗑 Удалить {s.ScheduledAt.FormatMoscowShort()}", $"delete_session:{s.Id}") }))
-            : null;
+        var renderResult = SessionListMessageRenderer.Render(sessionsList);
 
         await botClient.SendMessage(
             chatId: message.Chat.Id,
-            text: text,
+            text: renderResult.Text,
             parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-            replyMarkup: keyboard,
+            replyMarkup: renderResult.Markup,
             cancellationToken: cancellationToken);
     }
 }

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

@@ -1,11 +1,14 @@
 using Dapper;
 using GmRelay.Bot.Features.Notifications;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.ReplyMarkups;
+using GmRelay.Bot.Infrastructure.Telegram;
 
 namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
@@ -13,13 +16,7 @@ namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
 internal sealed record AwaitingProposalDto(
     Guid Id, Guid SessionId, string Title, DateTime CurrentScheduledAt,
-    Guid BatchId, int? BatchMessageId, long TelegramChatId, string NotificationMode);
-
-internal sealed record VoteParticipantDto(
-    Guid PlayerId,
-    string DisplayName,
-    string? TelegramUsername,
-    long TelegramId = 0);
+    Guid BatchId, int? BatchMessageId, long TelegramChatId, int? ThreadId, string NotificationMode);
 
 // ── Handler ──────────────────────────────────────────────────────────
 
@@ -32,6 +29,7 @@ internal sealed record VoteParticipantDto(
 public sealed class HandleRescheduleTimeInputHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     DirectSessionNotificationSender directSender,
     ILogger<HandleRescheduleTimeInputHandler> logger)
 {
@@ -56,6 +54,7 @@ public sealed class HandleRescheduleTimeInputHandler(
             SELECT rp.id AS Id, rp.session_id AS SessionId, s.title AS Title, s.scheduled_at AS CurrentScheduledAt,
                    s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
                    g.telegram_chat_id AS TelegramChatId,
+                   s.thread_id AS ThreadId,
                    s.notification_mode AS NotificationMode
             FROM reschedule_proposals rp
             JOIN sessions s ON s.id = rp.session_id
@@ -81,11 +80,10 @@ public sealed class HandleRescheduleTimeInputHandler(
         // 2. Parse voting input
         if (!RescheduleVotingInput.TryParse(text, DateTimeOffset.UtcNow, out var votingInput, out var parseError))
         {
-            await bot.SendMessage(
-                chatId: chatId,
-                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);
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(chatId, proposal.ThreadId),
+                $"⚠️ {parseError}\n\nИспользуйте формат:\n<code>25.04.2026 19:30\n26.04.2026 18:00\nДедлайн: 25.04.2026 12:00</code>",
+                ct);
             return true;
         }
 
@@ -160,6 +158,7 @@ public sealed class HandleRescheduleTimeInputHandler(
 
         var voteMsg = await bot.SendMessage(
             chatId: chatId,
+            messageThreadId: proposal.ThreadId,
             text: voteText,
             parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
             replyMarkup: keyboard,
@@ -223,6 +222,8 @@ public sealed class HandleRescheduleTimeInputHandler(
             UPDATE sessions
             SET scheduled_at = @NewTime,
                 status = @Status,
+                confirmation_message_id = NULL,
+                confirmation_sent_at = NULL,
                 one_hour_reminder_processed_at = NULL,
                 updated_at = now()
             WHERE id = @SessionId
@@ -237,11 +238,10 @@ public sealed class HandleRescheduleTimeInputHandler(
 
         await transaction.CommitAsync(ct);
 
-        await bot.SendMessage(
-            chatId: chatId,
-            text: $"✅ Сессия «{proposal.Title}» перенесена!\n\n📅 Новое время: <b>{newTime.ToOffset(TimeSpan.FromHours(3)).ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"))}</b> (МСК)\n\n<i>Участников нет — голосование не требуется.</i>",
-            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-            cancellationToken: ct);
+        await messenger.SendGroupMessageAsync(
+            TelegramPlatformIds.Group(chatId, proposal.ThreadId),
+            $"✅ Сессия «{proposal.Title}» перенесена!\n\n📅 Новое время: <b>{newTime.ToOffset(TimeSpan.FromHours(3)).ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"))}</b> (МСК)\n\n<i>Участников нет — голосование не требуется.</i>",
+            ct);
 
         // Re-render batch message with updated time
         await TryUpdateBatchMessage(proposal, ct);
@@ -356,7 +356,7 @@ public sealed class HandleRescheduleTimeInputHandler(
             await using var conn = await dataSource.OpenConnectionAsync(ct);
 
             var batchSessions = (await conn.QueryAsync<SessionBatchDto>(
-                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
+                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers, join_link AS JoinLink FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
                 new { proposal.BatchId })).ToList();
 
             var batchParticipants = (await conn.QueryAsync<ParticipantBatchDto>(
@@ -375,16 +375,14 @@ public sealed class HandleRescheduleTimeInputHandler(
 
             if (proposal.BatchMessageId.HasValue)
             {
-                var renderResult = SessionBatchRenderer.Render(
-                    proposal.Title, batchSessions, batchParticipants);
+                var view = SessionBatchViewBuilder.Build(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);
+                await messenger.UpdateScheduleAsync(
+                    new PlatformScheduleMessage(
+                        TelegramPlatformIds.Group(proposal.TelegramChatId, proposal.ThreadId),
+                        view,
+                        TelegramPlatformIds.Message(proposal.TelegramChatId, proposal.ThreadId, proposal.BatchMessageId.Value)),
+                    ct);
             }
             else
             {

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

@@ -1,5 +1,7 @@
 using Dapper;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
 using Npgsql;
 using Telegram.Bot;
 
@@ -12,16 +14,10 @@ public sealed record HandleRescheduleVoteCommand(
     long ChatId,
     int MessageId);
 
-internal sealed record VoteProposalDto(
-    Guid Id,
-    Guid SessionId,
-    DateTimeOffset VotingDeadlineAt,
-    string Title,
-    DateTime CurrentScheduledAt);
-
 public sealed class HandleRescheduleVoteHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     ILogger<HandleRescheduleVoteHandler> logger)
 {
     public async Task HandleAsync(HandleRescheduleVoteCommand command, CancellationToken ct)
@@ -46,20 +42,13 @@ public sealed class HandleRescheduleVoteHandler(
 
         if (proposal is null)
         {
-            await bot.AnswerCallbackQuery(
-                command.CallbackQueryId,
-                "Голосование уже завершено или не найдено.",
-                cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Голосование уже завершено или не найдено.", ct);
             return;
         }
 
         if (proposal.VotingDeadlineAt <= DateTimeOffset.UtcNow)
         {
-            await bot.AnswerCallbackQuery(
-                command.CallbackQueryId,
-                "Дедлайн уже прошёл. Результаты скоро будут применены.",
-                showAlert: true,
-                cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Дедлайн уже прошёл. Результаты скоро будут применены.", ct, showAlert: true);
             return;
         }
 
@@ -78,10 +67,7 @@ public sealed class HandleRescheduleVoteHandler(
 
         if (playerId is null)
         {
-            await bot.AnswerCallbackQuery(
-                command.CallbackQueryId,
-                "Вы не являетесь участником этой сессии.",
-                cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Вы не являетесь участником этой сессии.", ct);
             return;
         }
 
@@ -169,9 +155,9 @@ public sealed class HandleRescheduleVoteHandler(
             logger.LogWarning(ex, "Failed to update reschedule vote message for proposal {ProposalId}", proposal.Id);
         }
 
-        await bot.AnswerCallbackQuery(
-            command.CallbackQueryId,
-            "Ваш голос учтён. До дедлайна его можно изменить.",
-            cancellationToken: ct);
+        await AnswerAsync(command.CallbackQueryId, "Ваш голос учтён. До дедлайна его можно изменить.", ct);
     }
+
+    private Task AnswerAsync(string callbackQueryId, string text, CancellationToken ct, bool showAlert = false) =>
+        messenger.AnswerInteractionAsync(new PlatformInteractionReply(callbackQueryId, text, showAlert), ct);
 }

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

@@ -1,7 +1,8 @@
 using Dapper;
+using GmRelay.Bot.Infrastructure.Telegram;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using Npgsql;
-using Telegram.Bot;
 
 namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
@@ -12,6 +13,7 @@ public sealed record InitiateRescheduleCommand(
     long TelegramUserId,
     string CallbackQueryId,
     long ChatId,
+    int? MessageThreadId,
     int MessageId);
 
 // ── DTOs ─────────────────────────────────────────────────────────────
@@ -27,7 +29,7 @@ internal sealed record RescheduleSessionInfoDto(string Title, bool CanManage);
 /// </summary>
 public sealed class InitiateRescheduleHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     ILogger<InitiateRescheduleHandler> logger)
 {
     public async Task HandleAsync(InitiateRescheduleCommand command, CancellationToken ct)
@@ -52,14 +54,13 @@ public sealed class InitiateRescheduleHandler(
 
         if (session is null)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия не найдена.", cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Сессия не найдена.", ct);
             return;
         }
 
         if (!session.CanManage)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId,
-                "Только owner или co-GM может переносить сессию.", showAlert: true, cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Только owner или co-GM может переносить сессию.", ct, showAlert: true);
             return;
         }
 
@@ -75,38 +76,43 @@ public sealed class InitiateRescheduleHandler(
 
         if (hasActive)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId,
-                "Уже есть активный запрос на перенос этой сессии.", showAlert: true, cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Уже есть активный запрос на перенос этой сессии.", ct, showAlert: true);
             return;
         }
 
         // 3. Create proposal in AwaitingTime status
         await connection.ExecuteAsync(
             """
-            INSERT INTO reschedule_proposals (session_id, proposed_by, status)
-            VALUES (@SessionId, @GmId, 'AwaitingTime')
+            INSERT INTO reschedule_proposals (session_id, proposed_by, source_platform, status)
+            VALUES (@SessionId, @GmId, 'Telegram', 'AwaitingTime')
             """,
             new { command.SessionId, GmId = command.TelegramUserId });
 
         logger.LogInformation("Reschedule initiated for session {SessionId} by GM {GmId}", command.SessionId, command.TelegramUserId);
 
         // 4. Prompt GM in chat
-        await bot.AnswerCallbackQuery(command.CallbackQueryId,
-            "Введите 2-3 варианта времени и дедлайн голосования.", cancellationToken: ct);
+        await AnswerAsync(command.CallbackQueryId, "Введите 2-3 варианта времени и дедлайн голосования.", ct);
 
-        await bot.SendMessage(
-            chatId: command.ChatId,
-            text: $"""
-                ⏰ Укажите 2-3 варианта времени для сессии «{session.Title}» и дедлайн голосования.
+        var prompt = string.Join(
+            "\n",
+            new[]
+            {
+                $"⏰ 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."
+            });
 
-                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);
+        await messenger.SendGroupMessageAsync(
+            TelegramPlatformIds.Group(command.ChatId, command.MessageThreadId),
+            prompt,
+            ct);
     }
+
+    private Task AnswerAsync(string callbackQueryId, string text, CancellationToken ct, bool showAlert = false) =>
+        messenger.AnswerInteractionAsync(new PlatformInteractionReply(callbackQueryId, text, showAlert), ct);
 }

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

@@ -1,29 +1,25 @@
 using Dapper;
-using GmRelay.Bot.Features.Notifications;
+using GmRelay.Bot.Infrastructure.Telegram;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
 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,
+internal sealed record TelegramProposalFieldsDto(
     int? VoteMessageId,
+    int? BatchMessageId,
     long TelegramChatId,
-    string NotificationMode);
+    int? ThreadId);
 
 public sealed class RescheduleVotingDeadlineService(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
-    DirectSessionNotificationSender directSender,
+    IPlatformMessenger messenger,
+    PlatformDirectNotificationSender directSender,
+    RescheduleVotingFinalizer finalizer,
     ILogger<RescheduleVotingDeadlineService> logger) : BackgroundService
 {
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
@@ -47,17 +43,7 @@ public sealed class RescheduleVotingDeadlineService(
     {
         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();
+            var proposalIds = await finalizer.GetDueProposalIdsAsync("Telegram", ct);
 
             foreach (var proposalId in proposalIds)
             {
@@ -75,218 +61,109 @@ public sealed class RescheduleVotingDeadlineService(
 
     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 result = await finalizer.FinalizeAsync(proposalId, ct);
+        if (result is null)
+            return;
 
-        var proposal = await connection.QuerySingleOrDefaultAsync<DueRescheduleProposalDto>(
+        if (result.SourcePlatform != "Telegram")
+        {
+            logger.LogInformation(
+                "Skipping Telegram message handling for proposal {ProposalId} with source platform {SourcePlatform}",
+                proposalId,
+                result.SourcePlatform);
+            return;
+        }
+
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        var telegramFields = await connection.QuerySingleOrDefaultAsync<TelegramProposalFieldsDto>(
             """
-            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,
+            SELECT rp.vote_message_id AS VoteMessageId,
                    s.batch_message_id AS BatchMessageId,
-                   s.notification_mode AS NotificationMode,
-                   g.telegram_chat_id AS TelegramChatId
+                   g.telegram_chat_id AS TelegramChatId,
+                   s.thread_id AS ThreadId
             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);
+            new { ProposalId = proposalId });
 
-        if (proposal is null)
+        if (telegramFields is null)
+        {
+            logger.LogWarning("Could not find Telegram fields for proposal {ProposalId}", proposalId);
             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))
+        var directRecipients = result.Participants
+            .Select(p => TelegramPlatformIds.User(p.TelegramId, p.DisplayName))
             .ToList();
 
-        await transaction.CommitAsync(ct);
+        await TryUpdateVoteMessage(result, telegramFields, ct);
 
-        await TryUpdateVoteMessage(proposal, options, participants, votes, decision, selectedOption, ct);
-
-        if (selectedOption is not null)
+        if (result.SelectedOption is not null)
         {
-            await TryUpdateBatchMessage(proposal, ct);
+            await TryUpdateBatchMessage(result, telegramFields, ct);
         }
 
-        var mode = SessionNotificationModeExtensions.FromDatabaseValue(proposal.NotificationMode);
+        var mode = SessionNotificationModeExtensions.FromDatabaseValue(result.NotificationMode);
         if (mode.ShouldSendDirectMessages())
         {
-            await SendDirectResult(proposal, directRecipients, decision, selectedOption, ct);
+            await SendDirectResult(result, directRecipients, ct);
         }
 
         logger.LogInformation(
-            "Finalized reschedule proposal {ProposalId} for session {SessionId} with outcome {Outcome}",
-            proposal.Id,
-            proposal.SessionId,
-            decision.Outcome);
+            "Updated Telegram messages for finalized reschedule proposal {ProposalId} for session {SessionId}",
+            result.ProposalId,
+            result.SessionId);
     }
 
     private async Task TryUpdateVoteMessage(
-        DueRescheduleProposalDto proposal,
-        IReadOnlyList<RescheduleOptionDto> options,
-        IReadOnlyList<VoteParticipantDto> participants,
-        IReadOnlyList<RescheduleOptionVoteDto> votes,
-        RescheduleVoteDecision decision,
-        RescheduleOptionDto? selectedOption,
+        RescheduleVotingFinalizerResult result,
+        TelegramProposalFieldsDto telegramFields,
         CancellationToken ct)
     {
-        if (proposal.VoteMessageId is null)
+        if (telegramFields.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);
+            await messenger.UpdateRescheduleVoteAsync(
+                new PlatformRescheduleVoteUpdate(
+                    TelegramPlatformIds.Group(telegramFields.TelegramChatId, telegramFields.ThreadId),
+                    TelegramPlatformIds.Message(
+                        telegramFields.TelegramChatId,
+                        telegramFields.ThreadId,
+                        telegramFields.VoteMessageId.Value),
+                    result.ProposalId,
+                    result.SessionId,
+                    result.Title,
+                    result.CurrentScheduledAt,
+                    result.VotingDeadlineAt,
+                    result.Decision,
+                    result.SelectedOption,
+                    result.Options,
+                    result.Votes,
+                    result.Participants),
+                ct);
         }
         catch (Exception ex)
         {
-            logger.LogWarning(ex, "Failed to update finalized reschedule vote message for proposal {ProposalId}", proposal.Id);
+            logger.LogWarning(ex, "Failed to update finalized reschedule vote message for proposal {ProposalId}", result.ProposalId);
         }
     }
 
-    private async Task TryUpdateBatchMessage(DueRescheduleProposalDto proposal, CancellationToken ct)
+    private async Task TryUpdateBatchMessage(
+        RescheduleVotingFinalizerResult result,
+        TelegramProposalFieldsDto telegramFields,
+        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();
+                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers, join_link AS JoinLink FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
+                new { result.BatchId })).ToList();
 
             var batchParticipants = (await connection.QueryAsync<ParticipantBatchDto>(
                 """
@@ -300,62 +177,49 @@ public sealed class RescheduleVotingDeadlineService(
                 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();
+                new { result.BatchId })).ToList();
 
-            if (proposal.BatchMessageId.HasValue)
+            if (telegramFields.BatchMessageId.HasValue)
             {
-                var renderResult = SessionBatchRenderer.Render(proposal.Title, batchSessions, batchParticipants);
+                var view = SessionBatchViewBuilder.Build(result.Title, batchSessions, batchParticipants);
 
-                await bot.EditMessageText(
-                    chatId: proposal.TelegramChatId,
-                    messageId: proposal.BatchMessageId.Value,
-                    text: renderResult.Text,
-                    parseMode: ParseMode.Html,
-                    replyMarkup: renderResult.Markup,
-                    cancellationToken: ct);
+                await messenger.UpdateScheduleAsync(
+                    new PlatformScheduleMessage(
+                        TelegramPlatformIds.Group(telegramFields.TelegramChatId, telegramFields.ThreadId),
+                        view,
+                        TelegramPlatformIds.Message(telegramFields.TelegramChatId, telegramFields.ThreadId, telegramFields.BatchMessageId.Value)),
+                    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);
+                await messenger.SendGroupMessageAsync(
+                    TelegramPlatformIds.Group(telegramFields.TelegramChatId, telegramFields.ThreadId),
+                    $"Расписание обновлено после голосования за перенос сессии \"{System.Net.WebUtility.HtmlEncode(result.Title)}\".",
+                    ct);
             }
         }
         catch (Exception ex)
         {
-            logger.LogWarning(ex, "Failed to update batch message for finalized proposal {ProposalId}", proposal.Id);
+            logger.LogWarning(ex, "Failed to update batch message for finalized proposal {ProposalId}", result.ProposalId);
         }
     }
 
     private async Task SendDirectResult(
-        DueRescheduleProposalDto proposal,
-        IReadOnlyList<DirectNotificationRecipient> recipients,
-        RescheduleVoteDecision decision,
-        RescheduleOptionDto? selectedOption,
+        RescheduleVotingFinalizerResult result,
+        IReadOnlyList<PlatformUser> recipients,
         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(
+            result.SelectedOption is not null
+                ? PlatformDirectSessionNotificationKind.RescheduleApproved
+                : PlatformDirectSessionNotificationKind.RescheduleRejected,
             recipients,
-            htmlText,
-            selectedOption is not null ? "reschedule-vote-approved" : "reschedule-vote-rejected",
-            proposal.SessionId,
+            result.SessionId,
+            result.Title,
+            result.SelectedOption?.ProposedAt.UtcDateTime ?? result.CurrentScheduledAt,
+            joinLink: null,
+            actorDisplayName: null,
+            reason: result.SelectedOption is null ? result.Decision.Reason : null,
             ct);
     }
 }

src/GmRelay.Bot/Infrastructure/Health/BotHealthCheckHostedService.cs

@@ -0,0 +1,101 @@
+using System.Net;
+
+namespace GmRelay.Bot.Infrastructure.Health;
+
+public sealed class BotHealthCheckHostedService : IHostedService
+{
+    private readonly ILogger<BotHealthCheckHostedService> _logger;
+    private readonly string _prefix;
+    private HttpListener? _listener;
+    private CancellationTokenSource? _cts;
+    private Task? _listenerTask;
+
+    public BotHealthCheckHostedService(
+        ILogger<BotHealthCheckHostedService> logger,
+        IConfiguration configuration)
+    {
+        _logger = logger;
+        _prefix = configuration.GetValue("HealthCheck:Prefix", "http://+:8081/")!;
+    }
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        _cts = new CancellationTokenSource();
+        _listener = new HttpListener();
+        _listener.Prefixes.Add(_prefix);
+        _listener.Start();
+
+        _logger.LogInformation("Health check server started on {Prefix}", _prefix);
+
+        _listenerTask = Task.Run(async () => await ListenAsync(_cts.Token), cancellationToken);
+
+        return Task.CompletedTask;
+    }
+
+    public async Task StopAsync(CancellationToken cancellationToken)
+    {
+        _cts?.Cancel();
+        _listener?.Stop();
+
+        if (_listenerTask != null)
+        {
+            await Task.WhenAny(_listenerTask, Task.Delay(TimeSpan.FromSeconds(5), cancellationToken));
+        }
+
+        _listener?.Close();
+        _logger.LogInformation("Health check server stopped");
+    }
+
+    private async Task ListenAsync(CancellationToken cancellationToken)
+    {
+        while (_listener?.IsListening == true && !cancellationToken.IsCancellationRequested)
+        {
+            try
+            {
+                var context = await _listener.GetContextAsync();
+                _ = Task.Run(() => HandleRequestAsync(context), cancellationToken);
+            }
+            catch (HttpListenerException) when (cancellationToken.IsCancellationRequested)
+            {
+                break;
+            }
+            catch (ObjectDisposedException)
+            {
+                break;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error in health check listener");
+            }
+        }
+    }
+
+    private async Task HandleRequestAsync(HttpListenerContext context)
+    {
+        var response = context.Response;
+        try
+        {
+            var request = context.Request;
+
+            if (request.Url?.AbsolutePath == "/health")
+            {
+                response.StatusCode = (int)HttpStatusCode.OK;
+                response.ContentType = "application/json";
+                var body = "{\"status\":\"healthy\"}"u8.ToArray();
+                await response.OutputStream.WriteAsync(body);
+            }
+            else
+            {
+                response.StatusCode = (int)HttpStatusCode.NotFound;
+            }
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error handling health check request");
+        }
+        finally
+        {
+            response.Close();
+        }
+    }
+}

src/GmRelay.Bot/Infrastructure/Scheduling/ISystemClock.cs

@@ -0,0 +1,13 @@
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Bot.Infrastructure.Scheduling;
+
+public sealed class SystemClock : ISystemClock
+{
+    public DateTimeOffset UtcNow => DateTimeOffset.UtcNow;
+}
+
+public sealed class FakeSystemClock : ISystemClock
+{
+    public DateTimeOffset UtcNow { get; set; } = DateTimeOffset.UtcNow;
+}

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

@@ -1,157 +0,0 @@
-using Dapper;
-using GmRelay.Shared.Domain;
-using GmRelay.Bot.Features.Confirmation.SendConfirmation;
-using GmRelay.Bot.Features.Reminders.SendJoinLink;
-using GmRelay.Bot.Features.Reminders.SendOneHourReminder;
-using Npgsql;
-
-namespace GmRelay.Bot.Infrastructure.Scheduling;
-
-/// <summary>
-/// Stateless scheduler: wakes every 60 seconds, queries PostgreSQL for actionable sessions.
-/// Two triggers:
-///   T-24h: send confirmation request with inline keyboard
-///   T-5min: send join link to all confirmed players
-///
-/// If the Raspberry Pi reboots, nothing is lost — all state is in the DB.
-/// </summary>
-public sealed class SessionSchedulerService(
-    NpgsqlDataSource dataSource,
-    SendConfirmationHandler confirmationHandler,
-    SendOneHourReminderHandler oneHourReminderHandler,
-    SendJoinLinkHandler joinLinkHandler,
-    ILogger<SessionSchedulerService> logger) : BackgroundService
-{
-    private static readonly TimeSpan TickInterval = TimeSpan.FromMinutes(1);
-    private static readonly TimeSpan ConfirmationLeadTime = TimeSpan.FromHours(24);
-    private static readonly TimeSpan OneHourReminderLeadTime = TimeSpan.FromHours(1);
-    private static readonly TimeSpan JoinLinkLeadTime = TimeSpan.FromMinutes(5);
-
-    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
-    {
-        logger.LogInformation("Session scheduler started (interval: {Interval})", TickInterval);
-
-        using var timer = new PeriodicTimer(TickInterval);
-
-        // Run immediately on startup, then on each tick
-        do
-        {
-            try
-            {
-                await ProcessConfirmationTriggers(stoppingToken);
-                await ProcessOneHourReminderTriggers(stoppingToken);
-                await ProcessJoinLinkTriggers(stoppingToken);
-            }
-            catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
-            {
-                break;
-            }
-            catch (Exception ex)
-            {
-                logger.LogError(ex, "Scheduler tick failed, will retry next tick");
-            }
-        }
-        while (await timer.WaitForNextTickAsync(stoppingToken));
-
-        logger.LogInformation("Session scheduler stopped");
-    }
-
-    /// <summary>
-    /// T-1h trigger: process direct reminders according to the session notification mode.
-    /// </summary>
-    private async Task ProcessOneHourReminderTriggers(CancellationToken ct)
-    {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-        var sessionIds = await connection.QueryAsync<Guid>(
-            """
-            SELECT id
-            FROM sessions
-            WHERE status IN (@Confirmed, @ConfirmationSent)
-              AND scheduled_at - @LeadTime <= now()
-              AND one_hour_reminder_processed_at IS NULL
-            """,
-            new
-            {
-                Confirmed = SessionStatus.Confirmed,
-                ConfirmationSent = SessionStatus.ConfirmationSent,
-                LeadTime = OneHourReminderLeadTime
-            });
-
-        foreach (var sessionId in sessionIds)
-        {
-            try
-            {
-                await oneHourReminderHandler.HandleAsync(sessionId, ct);
-                logger.LogInformation("One-hour reminder processed for session {SessionId}", sessionId);
-            }
-            catch (Exception ex)
-            {
-                logger.LogError(ex, "Failed to process one-hour reminder for session {SessionId}", sessionId);
-            }
-        }
-    }
-
-    /// <summary>
-    /// T-24h trigger: find sessions that need confirmation requests sent.
-    /// Condition: status='Planned' AND scheduled_at minus 24h is in the past.
-    /// </summary>
-    private async Task ProcessConfirmationTriggers(CancellationToken ct)
-    {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-        var sessionIds = await connection.QueryAsync<Guid>(
-            """
-            SELECT id
-            FROM sessions
-            WHERE status = @Planned
-              AND scheduled_at - @LeadTime <= now()
-            """,
-            new { Planned = SessionStatus.Planned, LeadTime = ConfirmationLeadTime });
-
-        foreach (var sessionId in sessionIds)
-        {
-            try
-            {
-                await confirmationHandler.HandleAsync(sessionId, ct);
-                logger.LogInformation("Confirmation sent for session {SessionId}", sessionId);
-            }
-            catch (Exception ex)
-            {
-                logger.LogError(ex, "Failed to send confirmation for session {SessionId}", sessionId);
-            }
-        }
-    }
-
-    /// <summary>
-    /// T-5min trigger: find confirmed sessions that need join links sent.
-    /// Condition: status='Confirmed' AND scheduled_at minus 5min is in the past AND link not yet sent.
-    /// </summary>
-    private async Task ProcessJoinLinkTriggers(CancellationToken ct)
-    {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-
-        var sessionIds = await connection.QueryAsync<Guid>(
-            """
-            SELECT id
-            FROM sessions
-            WHERE status = @Confirmed
-              AND scheduled_at - @LeadTime <= now()
-              AND link_message_id IS NULL
-            """,
-            new { Confirmed = SessionStatus.Confirmed, LeadTime = JoinLinkLeadTime });
-
-        foreach (var sessionId in sessionIds)
-        {
-            try
-            {
-                await joinLinkHandler.HandleAsync(sessionId, ct);
-                logger.LogInformation("Join link sent for session {SessionId}", sessionId);
-            }
-            catch (Exception ex)
-            {
-                logger.LogError(ex, "Failed to send join link for session {SessionId}", sessionId);
-            }
-        }
-    }
-}

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

@@ -0,0 +1,51 @@
+using Telegram.Bot;
+using Telegram.Bot.Types.Enums;
+using Telegram.Bot.Types.ReplyMarkups;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+/// <summary>
+/// Handles editing batch messages that may be either text or photo messages.
+/// When the batch was created with SendPhoto (image + caption), we need
+/// EditMessageCaption instead of EditMessageText.
+/// </summary>
+public static class BatchMessageEditor
+{
+    /// <summary>
+    /// Edits a batch message, automatically detecting whether it is a text or photo message.
+    /// Tries EditMessageText first; on failure falls back to EditMessageCaption.
+    /// </summary>
+    public static async Task EditBatchMessageAsync(
+        ITelegramBotClient bot,
+        long chatId,
+        int messageId,
+        string text,
+        InlineKeyboardMarkup? replyMarkup,
+        CancellationToken ct = default)
+    {
+        try
+        {
+            await bot.EditMessageText(
+                chatId: chatId,
+                messageId: messageId,
+                text: text,
+                parseMode: ParseMode.Html,
+                replyMarkup: replyMarkup,
+                cancellationToken: ct);
+        }
+        catch (global::Telegram.Bot.Exceptions.ApiRequestException ex)
+            when (ex.Message.Contains("there is no text in the message", StringComparison.OrdinalIgnoreCase))
+        {
+            // The batch message is a photo — use EditMessageCaption instead.
+            // Caption is limited to 1024 chars; if text exceeds that, truncate gracefully.
+            var caption = text.Length <= 1024 ? text : text[..1021] + "...";
+            await bot.EditMessageCaption(
+                chatId: chatId,
+                messageId: messageId,
+                caption: caption,
+                parseMode: ParseMode.Html,
+                replyMarkup: replyMarkup,
+                cancellationToken: ct);
+        }
+    }
+}

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

@@ -0,0 +1,29 @@
+using System.Globalization;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+internal static class TelegramPlatformIds
+{
+    public static PlatformGroup Group(long chatId, int? threadId = null, string? displayName = null) =>
+        new(
+            PlatformKind.Telegram,
+            chatId.ToString(CultureInfo.InvariantCulture),
+            displayName ?? "Telegram chat",
+            ExternalChannelId: chatId.ToString(CultureInfo.InvariantCulture),
+            ExternalThreadId: threadId?.ToString(CultureInfo.InvariantCulture));
+
+    public static PlatformUser User(long telegramId, string displayName, string? username = null) =>
+        new(
+            PlatformKind.Telegram,
+            telegramId.ToString(CultureInfo.InvariantCulture),
+            displayName,
+            username);
+
+    public static PlatformMessageRef Message(long chatId, int? threadId, int messageId) =>
+        new(
+            PlatformKind.Telegram,
+            chatId.ToString(CultureInfo.InvariantCulture),
+            threadId?.ToString(CultureInfo.InvariantCulture),
+            messageId.ToString(CultureInfo.InvariantCulture));
+}

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

@@ -0,0 +1,455 @@
+using System.Globalization;
+using GmRelay.Bot.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+using Telegram.Bot.Types.ReplyMarkups;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+public sealed class TelegramPlatformMessenger(
+    ITelegramBotClient bot,
+    ILogger<TelegramPlatformMessenger> logger) : IPlatformMessenger
+{
+    public async Task<PlatformMessageRef> SendScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        EnsureTelegram(message.Group.Platform);
+
+        var chatId = ParseLong(message.Group.ExternalGroupId);
+        var threadId = ParseNullableInt(message.Group.ExternalThreadId);
+        var renderResult = TelegramSessionBatchRenderer.Render(message.View);
+        Message sentMessage;
+
+        if (!string.IsNullOrWhiteSpace(message.ImageReference) && renderResult.Text.Length <= 1024)
+        {
+            try
+            {
+                sentMessage = await bot.SendPhoto(
+                    chatId: chatId,
+                    messageThreadId: threadId,
+                    photo: InputFile.FromString(message.ImageReference),
+                    caption: renderResult.Text,
+                    parseMode: ParseMode.Html,
+                    replyMarkup: renderResult.Markup,
+                    cancellationToken: ct);
+            }
+            catch (Exception ex)
+            {
+                logger.LogWarning(ex, "Failed to send Telegram schedule image for group {ExternalGroupId}", message.Group.ExternalGroupId);
+                sentMessage = await SendScheduleTextMessage(chatId, threadId, renderResult.Text, renderResult.Markup, ct);
+            }
+        }
+        else
+        {
+            if (!string.IsNullOrWhiteSpace(message.ImageReference))
+            {
+                await TrySendScheduleImageOnly(chatId, threadId, message.View.Title, message.ImageReference, ct);
+            }
+
+            sentMessage = await SendScheduleTextMessage(chatId, threadId, renderResult.Text, renderResult.Markup, ct);
+        }
+
+        return new PlatformMessageRef(
+            PlatformKind.Telegram,
+            message.Group.ExternalGroupId,
+            message.Group.ExternalThreadId,
+            sentMessage.MessageId.ToString(CultureInfo.InvariantCulture));
+    }
+
+    public async Task UpdateScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        EnsureTelegram(message.Group.Platform);
+        var existingMessage = message.ExistingMessage;
+        if (existingMessage is null)
+        {
+            throw new ArgumentException("Existing schedule message reference is required.", nameof(message));
+        }
+
+        EnsureTelegram(existingMessage.Platform);
+        if (!string.Equals(message.Group.ExternalGroupId, existingMessage.ExternalGroupId, StringComparison.Ordinal) ||
+            !string.Equals(message.Group.ExternalThreadId, existingMessage.ExternalThreadId, StringComparison.Ordinal))
+        {
+            throw new ArgumentException("Existing schedule message reference must match the schedule group.", nameof(message));
+        }
+
+        var renderResult = TelegramSessionBatchRenderer.Render(message.View);
+        await BatchMessageEditor.EditBatchMessageAsync(
+            bot,
+            chatId: ParseLong(existingMessage.ExternalGroupId),
+            messageId: ParseInt(existingMessage.ExternalMessageId),
+            text: renderResult.Text,
+            replyMarkup: renderResult.Markup,
+            ct);
+    }
+
+    public Task SendGroupMessageAsync(PlatformGroup group, string htmlText, CancellationToken ct)
+    {
+        EnsureTelegram(group.Platform);
+        return bot.SendMessage(
+            chatId: ParseLong(group.ExternalGroupId),
+            messageThreadId: ParseNullableInt(group.ExternalThreadId),
+            text: htmlText,
+            parseMode: ParseMode.Html,
+            cancellationToken: ct);
+    }
+
+    public Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct)
+    {
+        EnsureTelegram(message.Recipient.Platform);
+        return bot.SendMessage(
+            chatId: ParseLong(message.Recipient.ExternalUserId),
+            text: message.HtmlText,
+            parseMode: ParseMode.Html,
+            cancellationToken: ct);
+    }
+
+    public Task AnswerInteractionAsync(PlatformInteractionReply reply, CancellationToken ct) =>
+        bot.AnswerCallbackQuery(
+            callbackQueryId: reply.InteractionId,
+            text: reply.Text,
+            showAlert: reply.ShowAlert,
+            cancellationToken: ct);
+
+    public async Task SendCalendarFileAsync(PlatformCalendarFile file, CancellationToken ct)
+    {
+        EnsureTelegram(file.Group.Platform);
+
+        using var stream = new MemoryStream(file.Content);
+        await bot.SendDocument(
+            chatId: ParseLong(file.Group.ExternalGroupId),
+            messageThreadId: ParseNullableInt(file.Group.ExternalThreadId),
+            document: InputFile.FromStream(stream, file.FileName),
+            caption: file.CaptionHtml,
+            parseMode: ParseMode.Html,
+            replyMarkup: BuildActionsMarkup(file.Actions),
+            cancellationToken: ct);
+    }
+
+    public async Task<PlatformMessageRef> SendConfirmationRequestAsync(PlatformConfirmationRequest request, CancellationToken ct)
+    {
+        EnsureTelegram(request.Group.Platform);
+
+        var chatId = ParseLong(request.Group.ExternalGroupId);
+        var threadId = ParseNullableInt(request.Group.ExternalThreadId);
+        var message = await bot.SendMessage(
+            chatId: chatId,
+            messageThreadId: threadId,
+            text: BuildConfirmationText(request),
+            parseMode: ParseMode.Html,
+            replyMarkup: BuildRsvpKeyboard(request.SessionId),
+            cancellationToken: ct);
+
+        return TelegramPlatformIds.Message(chatId, threadId, message.MessageId);
+    }
+
+    public async Task UpdateConfirmationRequestAsync(PlatformRsvpMessageUpdate update, CancellationToken ct)
+    {
+        var request = update.Request;
+        EnsureTelegram(request.Group.Platform);
+        var existingMessage = request.ExistingMessage
+            ?? throw new ArgumentException("Existing confirmation message reference is required.", nameof(update));
+
+        EnsureTelegram(existingMessage.Platform);
+        await bot.EditMessageText(
+            chatId: ParseLong(existingMessage.ExternalGroupId),
+            messageId: ParseInt(existingMessage.ExternalMessageId),
+            text: BuildConfirmationText(request),
+            parseMode: ParseMode.Html,
+            replyMarkup: update.DisableActions ? null : BuildRsvpKeyboard(request.SessionId),
+            cancellationToken: ct);
+    }
+
+    public async Task<PlatformMessageRef> SendJoinLinkNotificationAsync(
+        PlatformJoinLinkNotification notification,
+        CancellationToken ct)
+    {
+        EnsureTelegram(notification.Group.Platform);
+
+        var chatId = ParseLong(notification.Group.ExternalGroupId);
+        var threadId = ParseNullableInt(notification.Group.ExternalThreadId);
+        var message = await bot.SendMessage(
+            chatId: chatId,
+            messageThreadId: threadId,
+            text: BuildJoinLinkText(notification),
+            cancellationToken: ct);
+
+        return TelegramPlatformIds.Message(chatId, threadId, message.MessageId);
+    }
+
+    public Task SendDirectSessionNotificationAsync(
+        PlatformDirectSessionNotification notification,
+        CancellationToken ct)
+    {
+        EnsureTelegram(notification.Recipient.Platform);
+        return bot.SendMessage(
+            chatId: ParseLong(notification.Recipient.ExternalUserId),
+            text: BuildDirectNotificationText(notification),
+            parseMode: ParseMode.Html,
+            cancellationToken: ct);
+    }
+
+    public async Task SendRsvpOutcomeAsync(PlatformRsvpOutcomeNotification notification, CancellationToken ct)
+    {
+        switch (notification.Kind)
+        {
+            case PlatformRsvpOutcomeKind.GroupAllConfirmed:
+                if (notification.Group is null)
+                {
+                    throw new ArgumentException("Group notification requires a group.", nameof(notification));
+                }
+
+                EnsureTelegram(notification.Group.Platform);
+                await bot.SendMessage(
+                    chatId: ParseLong(notification.Group.ExternalGroupId),
+                    messageThreadId: ParseNullableInt(notification.Group.ExternalThreadId),
+                    text: $"🎉 Игра «{notification.Title}» подтверждена! Все участники на месте.",
+                    cancellationToken: ct);
+                break;
+
+            case PlatformRsvpOutcomeKind.GmAllConfirmed:
+            case PlatformRsvpOutcomeKind.GmPlayerDeclined:
+                foreach (var recipient in notification.Recipients)
+                {
+                    EnsureTelegram(recipient.Platform);
+                    await bot.SendMessage(
+                        chatId: ParseLong(recipient.ExternalUserId),
+                        text: BuildRsvpOutcomeDirectText(notification),
+                        parseMode: ParseMode.Html,
+                        cancellationToken: ct);
+                }
+
+                break;
+
+            default:
+                throw new ArgumentOutOfRangeException(nameof(notification), notification.Kind, "Unknown RSVP outcome kind.");
+        }
+    }
+
+    public Task UpdateRescheduleVoteAsync(PlatformRescheduleVoteUpdate update, CancellationToken ct)
+    {
+        EnsureTelegram(update.Group.Platform);
+        EnsureTelegram(update.ExistingMessage.Platform);
+
+        var resultText = update.SelectedOption is not null
+            ? $"✅ <b>Голосование завершено.</b>\nПобедил вариант {update.SelectedOption.DisplayOrder}: <b>{update.SelectedOption.ProposedAt.FormatMoscow()}</b> (МСК)."
+            : $"❌ <b>Голосование завершено.</b>\n{System.Net.WebUtility.HtmlEncode(update.Decision.Reason)}";
+
+        var text = $"""
+            {HandleRescheduleTimeInputHandler.BuildVotingMessage(
+                update.Title,
+                update.CurrentScheduledAt,
+                update.VotingDeadlineAt,
+                update.Options,
+                update.Participants,
+                update.Votes)}
+
+            {resultText}
+            """;
+
+        return bot.EditMessageText(
+            chatId: ParseLong(update.ExistingMessage.ExternalGroupId),
+            messageId: ParseInt(update.ExistingMessage.ExternalMessageId),
+            text: text,
+            parseMode: ParseMode.Html,
+            cancellationToken: ct);
+    }
+
+    private async Task<Message> SendScheduleTextMessage(
+        long chatId,
+        int? threadId,
+        string text,
+        InlineKeyboardMarkup markup,
+        CancellationToken ct) =>
+        await bot.SendMessage(
+            chatId: chatId,
+            messageThreadId: threadId,
+            text: text,
+            parseMode: ParseMode.Html,
+            replyMarkup: markup,
+            cancellationToken: ct);
+
+    private static string BuildConfirmationText(PlatformConfirmationRequest request)
+    {
+        var confirmed = request.Participants.Where(p => p.RsvpStatus == RsvpStatus.Confirmed).ToList();
+        var declined = request.Participants.Where(p => p.RsvpStatus == RsvpStatus.Declined).ToList();
+        var pending = request.Participants.Where(p => p.RsvpStatus == RsvpStatus.Pending).ToList();
+
+        var lines = new List<string>
+        {
+            $"🎲 Подтвердите участие в «{System.Net.WebUtility.HtmlEncode(request.Title)}»",
+            $"📅 {request.ScheduledAt.FormatMoscow()} (МСК)",
+            string.Empty
+        };
+
+        foreach (var participant in confirmed)
+        {
+            lines.Add($"   ✅ {FormatTelegramParticipant(participant)}");
+        }
+
+        foreach (var participant in declined)
+        {
+            lines.Add($"   ❌ <s>{FormatTelegramParticipant(participant)}</s>");
+        }
+
+        foreach (var participant in pending)
+        {
+            lines.Add($"   ⏳ {FormatTelegramParticipant(participant)}");
+        }
+
+        lines.Add(string.Empty);
+
+        if (request.Participants.Count > 0 && confirmed.Count == request.Participants.Count)
+        {
+            lines.Add($"Статус: ✅ все подтвердили ({confirmed.Count}/{request.Participants.Count})");
+        }
+        else if (declined.Count > 0)
+        {
+            lines.Add($"Статус: ⚠️ есть отказы ({confirmed.Count}/{request.Participants.Count} подтвердили)");
+        }
+        else
+        {
+            lines.Add($"Статус: ожидаем подтверждения ({confirmed.Count}/{request.Participants.Count})");
+        }
+
+        return string.Join("\n", lines);
+    }
+
+    private static string BuildJoinLinkText(PlatformJoinLinkNotification notification)
+    {
+        var mentions = string.Join(", ", notification.ConfirmedPlayers.Select(FormatTelegramParticipant));
+
+        return $"""
+            🎮 Игра «{notification.Title}» начинается через 5 минут!
+
+            🔗 Ссылка на подключение:
+            {notification.JoinLink}
+
+            Участники: {mentions}
+
+            Хорошей игры! 🎲
+            """;
+    }
+
+    private static string BuildDirectNotificationText(PlatformDirectSessionNotification notification) =>
+        notification.Kind switch
+        {
+            PlatformDirectSessionNotificationKind.ConfirmationRequest => $"""
+                🎲 <b>Подтвердите участие в игре</b>
+
+                📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>
+                📅 {notification.ScheduledAt.FormatMoscow()} (МСК)
+
+                Ответьте кнопкой в групповом сообщении расписания.
+                """,
+            PlatformDirectSessionNotificationKind.OneHourReminder => $"""
+                ⏰ <b>Игра начнётся примерно через 1 час</b>
+
+                📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>
+                📅 {notification.ScheduledAt.FormatMoscow()} (МСК)
+                🔗 {System.Net.WebUtility.HtmlEncode(notification.JoinLink ?? string.Empty)}
+                """,
+            PlatformDirectSessionNotificationKind.JoinLink => $"""
+                🎮 <b>Игра начинается через 5 минут</b>
+
+                📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>
+                🔗 {System.Net.WebUtility.HtmlEncode(notification.JoinLink ?? string.Empty)}
+                """,
+            PlatformDirectSessionNotificationKind.RescheduleApproved => $"""
+                ✅ <b>Сессия перенесена по итогам голосования</b>
+
+                📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>
+                📅 Новое время: <b>{notification.ScheduledAt.FormatMoscow()}</b> (МСК)
+                """,
+            PlatformDirectSessionNotificationKind.RescheduleRejected => $"""
+                ❌ <b>Перенос сессии отклонён по итогам голосования</b>
+
+                📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>
+                📅 Время остаётся прежним: <b>{notification.ScheduledAt.FormatMoscow()}</b> (МСК)
+                Причина: {System.Net.WebUtility.HtmlEncode(notification.Reason ?? string.Empty)}
+                """,
+            _ => BuildFallbackDirectText(notification)
+        };
+
+    private static string BuildFallbackDirectText(PlatformDirectSessionNotification notification) =>
+        $"<b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>\n{notification.ScheduledAt.FormatMoscow()} (МСК)";
+
+    private static string BuildRsvpOutcomeDirectText(PlatformRsvpOutcomeNotification notification) =>
+        notification.Kind switch
+        {
+            PlatformRsvpOutcomeKind.GmAllConfirmed =>
+                $"✅ Все подтвердили участие в «{System.Net.WebUtility.HtmlEncode(notification.Title)}» ({notification.ScheduledAt.FormatMoscow()} МСК).",
+            PlatformRsvpOutcomeKind.GmPlayerDeclined =>
+                $"🚨 Отмена! {System.Net.WebUtility.HtmlEncode(notification.ActorDisplayName ?? "Игрок")} не сможет прийти на игру «{System.Net.WebUtility.HtmlEncode(notification.Title)}».",
+            _ => System.Net.WebUtility.HtmlEncode(notification.Title)
+        };
+
+    private static InlineKeyboardMarkup BuildRsvpKeyboard(Guid sessionId) =>
+        new([
+            [
+                InlineKeyboardButton.WithCallbackData("✅ Буду", $"rsvp:confirm:{sessionId}"),
+                InlineKeyboardButton.WithCallbackData("❌ Не смогу", $"rsvp:decline:{sessionId}")
+            ]
+        ]);
+
+    private static string FormatTelegramParticipant(PlatformSessionParticipant participant) =>
+        participant.User.ExternalUsername is not null
+            ? $"@{participant.User.ExternalUsername}"
+            : System.Net.WebUtility.HtmlEncode(participant.User.DisplayName);
+
+    private async Task TrySendScheduleImageOnly(
+        long chatId,
+        int? threadId,
+        string title,
+        string imageReference,
+        CancellationToken ct)
+    {
+        try
+        {
+            await bot.SendPhoto(
+                chatId: chatId,
+                messageThreadId: threadId,
+                photo: InputFile.FromString(imageReference),
+                caption: $"🎲 {System.Net.WebUtility.HtmlEncode(title)}",
+                parseMode: ParseMode.Html,
+                cancellationToken: ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to send Telegram schedule image for chat {ChatId}", chatId);
+        }
+    }
+
+    private static InlineKeyboardMarkup? BuildActionsMarkup(IReadOnlyList<PlatformMessageAction> actions)
+    {
+        if (actions.Count == 0)
+        {
+            return null;
+        }
+
+        return new InlineKeyboardMarkup(
+            actions.Select(action => new[]
+            {
+                Uri.TryCreate(action.Payload, UriKind.Absolute, out var uri) &&
+                (uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps)
+                    ? InlineKeyboardButton.WithUrl(action.Label, action.Payload)
+                    : InlineKeyboardButton.WithCallbackData(action.Label, action.Payload)
+            }));
+    }
+
+    private static void EnsureTelegram(PlatformKind platform)
+    {
+        if (platform != PlatformKind.Telegram)
+        {
+            throw new NotSupportedException($"Telegram messenger cannot send messages for platform {platform}.");
+        }
+    }
+
+    private static long ParseLong(string value) => long.Parse(value, CultureInfo.InvariantCulture);
+
+    private static int ParseInt(string value) => int.Parse(value, CultureInfo.InvariantCulture);
+
+    private static int? ParseNullableInt(string? value) =>
+        string.IsNullOrWhiteSpace(value) ? null : int.Parse(value, CultureInfo.InvariantCulture);
+}

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

@@ -0,0 +1,63 @@
+// NOTE: duplicated in GmRelay.Web/Services/TelegramSessionBatchRenderer.cs
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+using Telegram.Bot.Types.ReplyMarkups;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+public static class TelegramSessionBatchRenderer
+{
+    public static (string Text, InlineKeyboardMarkup Markup) Render(SessionBatchViewModel view)
+    {
+        var messageText = $"🎲 <b>Новые игры:</b> {System.Net.WebUtility.HtmlEncode(view.Title)}\n\n" +
+                          $"<b>Расписание:</b>\n\n";
+
+        var buttons = new List<InlineKeyboardButton[]>();
+
+        foreach (var session in view.Sessions)
+        {
+            messageText += $"📅 <b>{session.ScheduledAt.FormatMoscow()}</b>\n";
+            messageText += session.MaxPlayers.HasValue
+                ? $"👥 Места: {session.ActivePlayerCount}/{session.MaxPlayers.Value}\n"
+                : $"👥 Игроки ({session.ActivePlayerCount}):\n";
+
+            if (!string.IsNullOrEmpty(session.JoinLink))
+            {
+                messageText += $"🔗 <a href=\"{System.Net.WebUtility.HtmlEncode(session.JoinLink)}\">Ссылка на игру</a>\n";
+            }
+
+            if (session.ActivePlayers.Count > 0)
+            {
+                messageText += string.Join("\n", session.ActivePlayers.Select(p =>
+                    $"  👤 {(p.TelegramUsername != null ? "@" + p.TelegramUsername : p.DisplayName)}")) + "\n";
+            }
+            else
+            {
+                messageText += "  <i>Пока никто не записался</i>\n";
+            }
+
+            if (session.WaitlistedPlayers.Count > 0)
+            {
+                messageText += $"⏳ Лист ожидания ({session.WaitlistedPlayers.Count}):\n";
+                messageText += string.Join("\n", session.WaitlistedPlayers.Select(p =>
+                    $"  ⏱ {(p.TelegramUsername != null ? "@" + p.TelegramUsername : p.DisplayName)}")) + "\n";
+            }
+
+            if (GmRelay.Shared.Domain.SessionStatus.IsCancelled(session.Status))
+            {
+                messageText += "❌ <i>Сессия отменена</i>\n\n";
+            }
+            else
+            {
+                messageText += "\n";
+                var actionRow = session.AvailableActions
+                    .Select(a => InlineKeyboardButton.WithCallbackData(a.Label, $"{a.ActionKey}:{a.SessionId}"))
+                    .ToArray();
+                if (actionRow.Length > 0)
+                    buttons.Add(actionRow);
+            }
+        }
+
+        return (messageText, new InlineKeyboardMarkup(buttons));
+    }
+}

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

@@ -0,0 +1,40 @@
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+public sealed record TelegramTopicDestination(
+    int? MessageThreadId,
+    bool ShouldCreateForumTopic,
+    bool TopicCreatedByBot);
+
+public static class TelegramTopicRouting
+{
+    public const string MissingForumTopicRightsMessage =
+        "Не удалось создать Telegram topic. Сделайте бота admin и включите право Manage Topics, затем повторите команду.";
+
+    public static TelegramTopicDestination ResolveNewScheduleDestination(
+        bool chatIsForum,
+        int? incomingMessageThreadId)
+    {
+        if (!chatIsForum)
+        {
+            return new TelegramTopicDestination(null, ShouldCreateForumTopic: false, TopicCreatedByBot: false);
+        }
+
+        if (incomingMessageThreadId.HasValue)
+        {
+            return new TelegramTopicDestination(
+                incomingMessageThreadId,
+                ShouldCreateForumTopic: false,
+                TopicCreatedByBot: false);
+        }
+
+        return new TelegramTopicDestination(null, ShouldCreateForumTopic: true, TopicCreatedByBot: true);
+    }
+
+    public static bool ShouldDeleteForumTopic(bool topicCreatedByBot, int remainingSessionsInTopic) =>
+        topicCreatedByBot && remainingSessionsInTopic == 0;
+
+    public static bool IsMissingForumTopicRightsError(string apiError) =>
+        apiError.Contains("not enough rights", StringComparison.OrdinalIgnoreCase) ||
+        apiError.Contains("CHAT_ADMIN_REQUIRED", StringComparison.OrdinalIgnoreCase) ||
+        apiError.Contains("not an administrator", StringComparison.OrdinalIgnoreCase);
+}

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

@@ -1,7 +1,8 @@
 // ... UpdateRouter will have CancelSessionHandler and cancel_session route instead of close_recruitment
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Sessions.CreateSession;
 using GmRelay.Shared.Rendering;
-using GmRelay.Bot.Features.Confirmation.HandleRsvp;
 using GmRelay.Bot.Features.Sessions.CreateSession;
 using GmRelay.Bot.Features.Sessions.ListSessions;
 using GmRelay.Bot.Features.Sessions.ExportCalendar;
@@ -42,17 +43,26 @@ public sealed class UpdateRouter(
                 await HandleCallbackQueryAsync(query, ct);
                 break;
 
-            case { Message: { Text: { } text } message } when text.StartsWith('/'):
-                await HandleCommandAsync(message, text, ct);
-                break;
+            case { Message: { } message }:
+                var commandText = GetCommandText(message);
+                if (commandText.StartsWith("/", StringComparison.Ordinal))
+                {
+                    await HandleCommandAsync(message, commandText, ct);
+                    break;
+                }
+
+                if (message.Text is not null)
+                {
+                    await rescheduleTimeInputHandler.TryHandleAsync(message, ct);
+                }
 
-            // Non-command text messages — check for reschedule time input
-            case { Message: { Text: { } } message } when !message.Text!.StartsWith('/'):
-                await rescheduleTimeInputHandler.TryHandleAsync(message, ct);
                 break;
         }
     }
 
+    internal static string GetCommandText(Message message)
+        => (message.Text ?? message.Caption ?? string.Empty).TrimStart();
+
     private async Task HandleCallbackQueryAsync(CallbackQuery query, CancellationToken ct)
     {
         if (query.Data is not { } data || query.Message is not { } message)
@@ -60,18 +70,22 @@ public sealed class UpdateRouter(
 
         var parts = data.Split(':', 3);
         var action = parts[0];
+        var user = TelegramPlatformIds.User(
+            query.From.Id,
+            query.From.FirstName + (string.IsNullOrEmpty(query.From.LastName) ? "" : $" {query.From.LastName}"),
+            query.From.Username);
+        var group = TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId, message.Chat.Title);
+        var scheduleMessage = TelegramPlatformIds.Message(message.Chat.Id, message.MessageThreadId, message.MessageId);
 
         if (action == "join_session" && parts.Length >= 2 && Guid.TryParse(parts[1], out var joinSessionId))
         {
             var command = new JoinSessionCommand(
                 SessionId: joinSessionId,
-                TelegramUserId: query.From.Id,
-                DisplayName: query.From.FirstName + (string.IsNullOrEmpty(query.From.LastName) ? "" : $" {query.From.LastName}"),
-                TelegramUsername: query.From.Username,
-                CallbackQueryId: query.Id,
-                ChatId: message.Chat.Id,
-                MessageId: message.MessageId);
-            
+                User: user,
+                InteractionId: query.Id,
+                Group: group,
+                ScheduleMessage: scheduleMessage);
+
             await joinSessionHandler.HandleAsync(command, ct);
             return;
         }
@@ -80,10 +94,10 @@ public sealed class UpdateRouter(
         {
             var command = new LeaveSessionCommand(
                 SessionId: leaveSessionId,
-                TelegramUserId: query.From.Id,
-                CallbackQueryId: query.Id,
-                ChatId: message.Chat.Id,
-                MessageId: message.MessageId);
+                User: user,
+                InteractionId: query.Id,
+                Group: group,
+                ScheduleMessage: scheduleMessage);
 
             await leaveSessionHandler.HandleAsync(command, ct);
             return;
@@ -96,6 +110,7 @@ public sealed class UpdateRouter(
                 TelegramUserId: query.From.Id,
                 CallbackQueryId: query.Id,
                 ChatId: message.Chat.Id,
+                MessageThreadId: message.MessageThreadId,
                 MessageId: message.MessageId);
 
             await cancelSessionHandler.HandleAsync(command, ct);
@@ -135,6 +150,7 @@ public sealed class UpdateRouter(
                 TelegramUserId: query.From.Id,
                 CallbackQueryId: query.Id,
                 ChatId: message.Chat.Id,
+                MessageThreadId: message.MessageThreadId,
                 MessageId: message.MessageId);
 
             await initiateRescheduleHandler.HandleAsync(command, ct);
@@ -171,11 +187,11 @@ public sealed class UpdateRouter(
 
             var command = new HandleRsvpCommand(
                 SessionId: sessionId,
-                TelegramUserId: query.From.Id,
+                User: user,
                 Status: status,
-                CallbackQueryId: query.Id,
-                ChatId: message.Chat.Id,
-                MessageId: message.MessageId);
+                InteractionId: query.Id,
+                Group: group,
+                ConfirmationMessage: scheduleMessage);
 
             await rsvpHandler.HandleAsync(command, ct);
         }
@@ -216,14 +232,15 @@ public sealed class UpdateRouter(
                         Время: 15.05.2026 19:30
                         Мест: 4
                         Ссылка: https://link
+                        Картинка: https://cover
 
                         Для регулярного расписания можно указать одну дату:
                         Игр: 4
                         Интервал: 7
 
                         /listsessions — список предстоящих сессий
+                        Для owner/co-GM /listsessions показывает кнопки отмены, переноса, удаления и повышения из листа ожидания.
                         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);

src/GmRelay.Bot/Migrations/V011__add_calendar_subscriptions.sql

@@ -0,0 +1,11 @@
+CREATE TABLE calendar_subscriptions (
+    id                  UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    token               TEXT UNIQUE NOT NULL,
+    user_telegram_id    BIGINT NOT NULL,
+    group_id            UUID REFERENCES game_groups(id) ON DELETE CASCADE,
+    filter_type         SMALLINT NOT NULL DEFAULT 0,
+    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
+    expires_at          TIMESTAMPTZ
+);
+
+CREATE INDEX ix_calendar_subscriptions_user_telegram_id ON calendar_subscriptions (user_telegram_id);

src/GmRelay.Bot/Migrations/V012__add_attendance_stats.sql

@@ -0,0 +1,66 @@
+-- =============================================================
+-- Attendance statistics view for GM analytics
+-- Returns per-player aggregated metrics for a given game group.
+-- NOTE: waitlist count reflects CURRENT registration_status only.
+--       Full historical waitlist tracking will come with #15.
+-- =============================================================
+
+CREATE OR REPLACE FUNCTION get_group_attendance_stats(p_group_id UUID)
+RETURNS TABLE (
+    player_id           UUID,
+    display_name        VARCHAR,
+    telegram_username   VARCHAR,
+    total_sessions      BIGINT,
+    confirmed_count     BIGINT,
+    declined_count      BIGINT,
+    no_response_count   BIGINT,
+    waitlisted_count    BIGINT,
+    cancellation_affected_count BIGINT,
+    attendance_rate     NUMERIC
+) AS $$
+BEGIN
+    RETURN QUERY
+    WITH player_sessions AS (
+        SELECT
+            sp.player_id,
+            s.id                AS session_id,
+            sp.rsvp_status,
+            sp.registration_status,
+            s.status            AS session_status,
+            s.scheduled_at
+        FROM session_participants sp
+        JOIN sessions s ON s.id = sp.session_id
+        WHERE s.group_id = p_group_id
+    ),
+    player_totals AS (
+        SELECT
+            ps.player_id,
+            COUNT(*) FILTER (WHERE ps.session_status <> 'Cancelled')                      AS total_sessions,
+            COUNT(*) FILTER (WHERE ps.rsvp_status = 'Confirmed' AND ps.session_status <> 'Cancelled') AS confirmed_count,
+            COUNT(*) FILTER (WHERE ps.rsvp_status = 'Declined' AND ps.session_status <> 'Cancelled')  AS declined_count,
+            COUNT(*) FILTER (WHERE ps.rsvp_status = 'Pending' AND ps.scheduled_at < NOW() AND ps.session_status <> 'Cancelled') AS no_response_count,
+            COUNT(*) FILTER (WHERE ps.registration_status = 'Waitlisted' AND ps.session_status <> 'Cancelled') AS waitlisted_count,
+            COUNT(*) FILTER (WHERE ps.session_status = 'Cancelled')                        AS cancellation_affected_count
+        FROM player_sessions ps
+        GROUP BY ps.player_id
+    )
+    SELECT
+        pt.player_id,
+        p.display_name,
+        COALESCE(p.external_username, p.telegram_username) AS telegram_username,
+        pt.total_sessions,
+        pt.confirmed_count,
+        pt.declined_count,
+        pt.no_response_count,
+        pt.waitlisted_count,
+        pt.cancellation_affected_count,
+        ROUND(
+            100.0 * pt.confirmed_count
+            / NULLIF(pt.total_sessions, 0),
+            1
+        ) AS attendance_rate
+    FROM player_totals pt
+    JOIN players p ON p.id = pt.player_id
+    ORDER BY pt.confirmed_count DESC, pt.total_sessions DESC;
+END;
+$$ LANGUAGE plpgsql STABLE;

src/GmRelay.Bot/Migrations/V013__add_session_audit_log.sql

@@ -0,0 +1,16 @@
+CREATE EXTENSION IF NOT EXISTS "pgcrypto";
+
+CREATE TABLE session_audit_log (
+    id                  UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    session_id          UUID NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
+    actor_telegram_id   BIGINT NOT NULL,
+    actor_name          VARCHAR(255) NOT NULL,
+    change_type         VARCHAR(50) NOT NULL
+                        CHECK (change_type IN ('Title','Time','Link','MaxPlayers','Status','WaitlistPromote','PlayerRemoved','BatchRescheduled','Cancelled')),
+    old_value           TEXT,
+    new_value           TEXT,
+    changed_at          TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX ix_session_audit_log_session_id ON session_audit_log(session_id);
+CREATE INDEX ix_session_audit_log_changed_at ON session_audit_log(changed_at);

src/GmRelay.Bot/Migrations/V014__add_confirmation_sent_at.sql

@@ -0,0 +1,13 @@
+ALTER TABLE sessions
+    ADD COLUMN confirmation_sent_at TIMESTAMPTZ;
+
+-- Update existing ConfirmationSent sessions to have a sentinel value
+-- so they don't get re-processed after migration
+UPDATE sessions
+SET confirmation_sent_at = now()
+WHERE status = 'ConfirmationSent';
+
+-- Partial index for efficient T-24h query
+CREATE INDEX ix_sessions_confirmation_reminders ON sessions (scheduled_at)
+    WHERE status = 'Planned'
+      AND confirmation_sent_at IS NULL;

src/GmRelay.Bot/Migrations/V015__add_topic_ownership.sql

@@ -0,0 +1,6 @@
+ALTER TABLE sessions
+    ADD COLUMN topic_created_by_bot BOOLEAN NOT NULL DEFAULT FALSE;
+
+UPDATE sessions
+SET topic_created_by_bot = TRUE
+WHERE thread_id IS NOT NULL;

src/GmRelay.Bot/Migrations/V016__add_platform_identity.sql

@@ -0,0 +1,119 @@
+-- =============================================================
+-- V016: Add platform identity columns and platform_messages table
+-- =============================================================
+-- Scope: Prepare schema for multi-platform support (Discord, etc).
+-- Legacy telegram_* columns are retained for backward compatibility.
+-- =============================================================
+
+-- -- Players: platform-agnostic identity
+ALTER TABLE players
+    ADD COLUMN platform          VARCHAR(50),
+    ADD COLUMN external_user_id  VARCHAR(255),
+    ADD COLUMN external_username VARCHAR(255);
+
+CREATE UNIQUE INDEX ix_players_platform_external_user_id
+    ON players (platform, external_user_id)
+    WHERE platform IS NOT NULL AND external_user_id IS NOT NULL;
+
+-- -- Game groups: platform-agnostic identity
+ALTER TABLE game_groups
+    ADD COLUMN platform           VARCHAR(50),
+    ADD COLUMN external_group_id  VARCHAR(255),
+    ADD COLUMN external_channel_id VARCHAR(255);
+
+CREATE UNIQUE INDEX ix_game_groups_platform_external_group_id
+    ON game_groups (platform, external_group_id)
+    WHERE platform IS NOT NULL AND external_group_id IS NOT NULL;
+
+-- -- Backfill existing Telegram data
+UPDATE players
+   SET platform          = 'Telegram',
+       external_user_id  = telegram_id::TEXT,
+       external_username = telegram_username
+ WHERE platform IS NULL;
+
+UPDATE game_groups
+   SET platform          = 'Telegram',
+       external_group_id = telegram_chat_id::TEXT
+ WHERE platform IS NULL;
+
+-- -- Platform messages: store per-platform message references
+CREATE TABLE platform_messages (
+    id                   UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    platform             VARCHAR(50) NOT NULL,
+    group_id             UUID REFERENCES game_groups(id) ON DELETE CASCADE,
+    batch_id             UUID,
+    session_id           UUID REFERENCES sessions(id) ON DELETE CASCADE,
+    external_channel_id  VARCHAR(255),
+    external_thread_id   VARCHAR(255),
+    external_message_id  VARCHAR(255) NOT NULL,
+    purpose              VARCHAR(50) NOT NULL,
+    created_at           TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX ix_platform_messages_group_id     ON platform_messages(group_id);
+CREATE INDEX ix_platform_messages_batch_id     ON platform_messages(batch_id);
+CREATE INDEX ix_platform_messages_session_id   ON platform_messages(session_id);
+CREATE INDEX ix_platform_messages_platform_message
+    ON platform_messages (platform, external_message_id);
+
+-- -- Recreate attendance stats function for new columns (prod back-compat)
+CREATE OR REPLACE FUNCTION get_group_attendance_stats(p_group_id UUID)
+RETURNS TABLE (
+    player_id           UUID,
+    display_name        VARCHAR,
+    telegram_username   VARCHAR,
+    total_sessions      BIGINT,
+    confirmed_count     BIGINT,
+    declined_count      BIGINT,
+    no_response_count   BIGINT,
+    waitlisted_count    BIGINT,
+    cancellation_affected_count BIGINT,
+    attendance_rate     NUMERIC
+) AS $$
+BEGIN
+    RETURN QUERY
+    WITH player_sessions AS (
+        SELECT
+            sp.player_id,
+            s.id                AS session_id,
+            sp.rsvp_status,
+            sp.registration_status,
+            s.status            AS session_status,
+            s.scheduled_at
+        FROM session_participants sp
+        JOIN sessions s ON s.id = sp.session_id
+        WHERE s.group_id = p_group_id
+    ),
+    player_totals AS (
+        SELECT
+            ps.player_id,
+            COUNT(*) FILTER (WHERE ps.session_status <> 'Cancelled')                      AS total_sessions,
+            COUNT(*) FILTER (WHERE ps.rsvp_status = 'Confirmed' AND ps.session_status <> 'Cancelled') AS confirmed_count,
+            COUNT(*) FILTER (WHERE ps.rsvp_status = 'Declined' AND ps.session_status <> 'Cancelled')  AS declined_count,
+            COUNT(*) FILTER (WHERE ps.rsvp_status = 'Pending' AND ps.scheduled_at < NOW() AND ps.session_status <> 'Cancelled') AS no_response_count,
+            COUNT(*) FILTER (WHERE ps.registration_status = 'Waitlisted' AND ps.session_status <> 'Cancelled') AS waitlisted_count,
+            COUNT(*) FILTER (WHERE ps.session_status = 'Cancelled')                        AS cancellation_affected_count
+        FROM player_sessions ps
+        GROUP BY ps.player_id
+    )
+    SELECT
+        pt.player_id,
+        p.display_name,
+        COALESCE(p.external_username, p.telegram_username) AS telegram_username,
+        pt.total_sessions,
+        pt.confirmed_count,
+        pt.declined_count,
+        pt.no_response_count,
+        pt.waitlisted_count,
+        pt.cancellation_affected_count,
+        ROUND(
+            100.0 * pt.confirmed_count
+            / NULLIF(pt.total_sessions, 0),
+            1
+        ) AS attendance_rate
+    FROM player_totals pt
+    JOIN players p ON p.id = pt.player_id
+    ORDER BY pt.confirmed_count DESC, pt.total_sessions DESC;
+END;
+$$ LANGUAGE plpgsql STABLE;

src/GmRelay.Bot/Migrations/V017__allow_platform_neutral_players.sql

@@ -0,0 +1,9 @@
+-- =============================================================
+-- V017: Allow platform-neutral players
+-- =============================================================
+-- Legacy Telegram identity columns remain for backward compatibility,
+-- but non-Telegram platform users do not have Telegram ids.
+-- =============================================================
+
+ALTER TABLE players
+    ALTER COLUMN telegram_id DROP NOT NULL;

src/GmRelay.Bot/Migrations/V018__discord_reschedule_proposals.sql

@@ -0,0 +1,19 @@
+-- =============================================================
+-- V018: Add platform columns to reschedule_proposals
+-- =============================================================
+-- Add platform columns to reschedule_proposals to support Discord reschedule voting.
+-- proposed_by is made nullable so Discord proposals can leave it NULL
+-- (Discord snowflakes don't fit in BIGINT safely).
+-- =============================================================
+
+ALTER TABLE reschedule_proposals
+    ALTER COLUMN proposed_by DROP NOT NULL;
+
+ALTER TABLE reschedule_proposals
+    ADD COLUMN source_platform VARCHAR(50),
+    ADD COLUMN proposed_by_external_user_id VARCHAR(255);
+
+UPDATE reschedule_proposals
+SET source_platform = 'Telegram',
+    proposed_by_external_user_id = proposed_by::TEXT
+WHERE source_platform IS NULL;

src/GmRelay.Bot/Program.cs

@@ -1,14 +1,18 @@
-using GmRelay.Bot.Features.Confirmation.HandleRsvp;
-using GmRelay.Bot.Features.Confirmation.SendConfirmation;
-using GmRelay.Bot.Features.Notifications;
-using GmRelay.Bot.Features.Reminders.SendJoinLink;
-using GmRelay.Bot.Features.Reminders.SendOneHourReminder;
 using GmRelay.Bot.Features.Sessions.CreateSession;
 using GmRelay.Bot.Features.Sessions.RescheduleSession;
 using GmRelay.Bot.Infrastructure.Database;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Bot.Infrastructure.Health;
 using GmRelay.Bot.Infrastructure.Logging;
-using GmRelay.Bot.Infrastructure.Scheduling;
 using GmRelay.Bot.Infrastructure.Telegram;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Confirmation.SendConfirmation;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Features.Reminders.SendJoinLink;
+using GmRelay.Shared.Features.Reminders.SendOneHourReminder;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Infrastructure.Scheduling;
+using GmRelay.Shared.Platform;
 using Npgsql;
 using Telegram.Bot;
 
@@ -49,14 +53,20 @@ builder.Services.AddSingleton<ITelegramBotClient>(sp =>
     return new TelegramBotClient(token);
 });
 builder.Services.AddSingleton<ITelegramUpdateSource, TelegramUpdateSource>();
+builder.Services.AddSingleton<IPlatformMessenger, TelegramPlatformMessenger>();
+builder.Services.AddSingleton(new PlatformSchedulerOptions(PlatformKind.Telegram));
 
 // ── Feature handlers (explicit registration — AOT safe) ──────────────
 builder.Services.AddSingleton<SendConfirmationHandler>();
-builder.Services.AddSingleton<DirectSessionNotificationSender>();
+builder.Services.AddSingleton<ISendConfirmationHandler>(sp => sp.GetRequiredService<SendConfirmationHandler>());
+builder.Services.AddSingleton<PlatformDirectNotificationSender>();
 builder.Services.AddSingleton<HandleRsvpHandler>();
 builder.Services.AddSingleton<SendJoinLinkHandler>();
+builder.Services.AddSingleton<ISendJoinLinkHandler>(sp => sp.GetRequiredService<SendJoinLinkHandler>());
 builder.Services.AddSingleton<SendOneHourReminderHandler>();
+builder.Services.AddSingleton<ISendOneHourReminderHandler>(sp => sp.GetRequiredService<SendOneHourReminderHandler>());
 builder.Services.AddSingleton<CreateSessionHandler>();
+builder.Services.AddSingleton<IScheduleMessageUpdateLock, ScheduleMessageUpdateLock>();
 builder.Services.AddSingleton<JoinSessionHandler>();
 builder.Services.AddSingleton<LeaveSessionHandler>();
 builder.Services.AddSingleton<PromoteWaitlistedPlayerHandler>();
@@ -67,6 +77,7 @@ builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ExportCalendar.Expor
 builder.Services.AddSingleton<InitiateRescheduleHandler>();
 builder.Services.AddSingleton<HandleRescheduleTimeInputHandler>();
 builder.Services.AddSingleton<HandleRescheduleVoteHandler>();
+builder.Services.AddSingleton<RescheduleVotingFinalizer>();
 
 // ── Telegram infrastructure ──────────────────────────────────────────
 builder.Services.AddSingleton<UpdateRouter>();
@@ -74,10 +85,17 @@ builder.Services.AddSingleton<ITelegramUpdateHandler>(sp => sp.GetRequiredServic
 builder.Services.AddHostedService<TelegramMiniAppMenuButtonService>();
 builder.Services.AddHostedService<TelegramBotService>();
 
+// ── Clock and scheduling ──────────────────────────────────────────────
+builder.Services.AddSingleton<ISystemClock, GmRelay.Bot.Infrastructure.Scheduling.SystemClock>();
+builder.Services.AddSingleton<ISessionTriggerStore, DbSessionTriggerStore>();
+
 // ── Session scheduler ────────────────────────────────────────────────
 builder.Services.AddHostedService<SessionSchedulerService>();
 builder.Services.AddHostedService<RescheduleVotingDeadlineService>();
 
+// ── Health check server ──────────────────────────────────────────────
+builder.Services.AddHostedService<BotHealthCheckHostedService>();
+
 var host = builder.Build();
 
 // ── Run database migrations on startup ───────────────────────────────

src/GmRelay.Bot/appsettings.json

@@ -9,5 +9,8 @@
   "Telegram": {
     "BotToken": "",
     "MiniAppUrl": ""
+  },
+  "Web": {
+    "BaseUrl": ""
   }
 }

src/GmRelay.Bot/packages.lock.json

@@ -0,0 +1,695 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Aspire.Npgsql": {
+        "type": "Direct",
+        "requested": "[13.2.2, )",
+        "resolved": "13.2.2",
+        "contentHash": "nEYgziWN7hksgEQEWy24JypcMCU8gKYcIIyPL05JfdXxUWuPRLotH/KOeuHevAjSEOYkL3dtGakBkJAuPobGmA==",
+        "dependencies": {
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+    },
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+        "dependencies": {
+          "runtime.win-x64.Microsoft.DotNet.ILCompiler": "10.0.5"
+        }
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+      "runtime.win-x64.Microsoft.DotNet.ILCompiler": {
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+      }
+    }
+  }
+}

src/GmRelay.DiscordBot/DiscordOptions.cs

@@ -0,0 +1,15 @@
+namespace GmRelay.DiscordBot;
+
+public sealed class DiscordOptions
+{
+    public string? Token { get; init; }
+
+    public void Validate()
+    {
+        if (string.IsNullOrWhiteSpace(Token))
+        {
+            throw new InvalidOperationException(
+                "Discord:Token is required. Set via environment variable Discord__Token or user secrets.");
+        }
+    }
+}

src/GmRelay.DiscordBot/Dockerfile

@@ -0,0 +1,25 @@
+# Stage 1: Build
+FROM mcr.microsoft.com/dotnet/sdk:10.0-noble AS build
+WORKDIR /src
+
+COPY ["src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj", "src/GmRelay.DiscordBot/"]
+COPY ["src/GmRelay.ServiceDefaults/GmRelay.ServiceDefaults.csproj", "src/GmRelay.ServiceDefaults/"]
+COPY ["src/GmRelay.Shared/GmRelay.Shared.csproj", "src/GmRelay.Shared/"]
+
+RUN dotnet restore "src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj"
+
+COPY src/ src/
+WORKDIR /src/src/GmRelay.DiscordBot
+RUN dotnet publish "GmRelay.DiscordBot.csproj" -c Release -o /app/publish /p:UseAppHost=false
+
+# Stage 2: Runtime
+FROM mcr.microsoft.com/dotnet/runtime:10.0-noble AS final
+WORKDIR /app
+
+# Install wget for healthcheck
+RUN apt-get update && apt-get install -y --no-install-recommends wget \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=build /app/publish .
+USER $APP_UID
+ENTRYPOINT ["dotnet", "GmRelay.DiscordBot.dll"]

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

@@ -0,0 +1,38 @@
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+[SlashCommand("listsessions", "Show upcoming game sessions in this server")]
+public class DiscordListSessionsCommand : ApplicationCommandModule<SlashCommandContext>
+{
+    private readonly DiscordListSessionsHandler _handler;
+
+    public DiscordListSessionsCommand(DiscordListSessionsHandler handler)
+    {
+        _handler = handler;
+    }
+
+    public async Task ExecuteAsync()
+    {
+        var guildId = Context.Guild?.Id.ToString()
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+        var channelId = Context.Channel.Id.ToString();
+
+        var view = await _handler.BuildScheduleAsync(guildId, channelId, CancellationToken.None);
+
+        if (view is null)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("📭 В этом сервере нет предстоящих игр."));
+            return;
+        }
+
+        var (embeds, actionRows) = Rendering.DiscordSessionBatchRenderer.Render(view);
+
+        await Context.Interaction.SendResponseAsync(
+            InteractionCallback.Message(new InteractionMessageProperties()
+                .WithEmbeds(embeds)
+                .WithComponents(actionRows)));
+    }
+}

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

@@ -0,0 +1,65 @@
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+internal sealed record DiscordSessionListItemDto(
+    Guid Id, string Title, DateTime ScheduledAt, string Status, int? MaxPlayers,
+    int PlayerCount, int WaitlistCount);
+
+public sealed class DiscordListSessionsHandler(NpgsqlDataSource dataSource)
+{
+    public async Task<SessionBatchViewModel?> BuildScheduleAsync(
+        string guildId,
+        string channelId,
+        CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        var sessions = await connection.QueryAsync<DiscordSessionListItemDto>(
+            @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt, s.status as Status,
+                     s.max_players as MaxPlayers,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Active) as PlayerCount,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted) as WaitlistCount
+              FROM sessions s
+              JOIN game_groups g ON s.group_id = g.id
+              LEFT JOIN session_participants sp ON s.id = sp.session_id
+              WHERE g.platform = 'Discord'
+                AND g.external_group_id = @GuildId
+                AND s.status != @Cancelled
+                AND s.scheduled_at > NOW()
+              GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players
+              ORDER BY s.scheduled_at ASC",
+            new
+            {
+                GuildId = guildId,
+                Cancelled = SessionStatus.Cancelled,
+                Active = ParticipantRegistrationStatus.Active,
+                Waitlisted = ParticipantRegistrationStatus.Waitlisted
+            });
+
+        var sessionList = sessions.ToList();
+        if (sessionList.Count == 0)
+            return null;
+
+        var sessionIds = sessionList.Select(s => s.Id).ToList();
+        var participants = await connection.QueryAsync<ParticipantBatchDto>(
+            @"SELECT sp.session_id as SessionId,
+                     p.display_name as DisplayName,
+                     COALESCE(p.external_username, p.telegram_username) as TelegramUsername,
+                     sp.registration_status as RegistrationStatus
+              FROM session_participants sp
+              JOIN players p ON p.id = sp.player_id
+              WHERE sp.session_id = ANY(@SessionIds) AND sp.is_gm = false
+              ORDER BY sp.registration_status ASC, sp.created_at ASC",
+            new { SessionIds = sessionIds });
+
+        var firstTitle = sessionList.First().Title;
+        var batchDtos = sessionList.Select(s => new SessionBatchDto(
+            s.Id, s.ScheduledAt, s.Status, s.MaxPlayers, "")).ToList();
+
+        return SessionBatchViewBuilder.Build(firstTitle, batchDtos, participants.ToList());
+    }
+}

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

@@ -0,0 +1,87 @@
+using GmRelay.DiscordBot.Rendering;
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+[SlashCommand("newsession", "Create a new game session")]
+public class DiscordNewSessionCommand : ApplicationCommandModule<SlashCommandContext>
+{
+    private readonly DiscordNewSessionHandler _handler;
+    private readonly ILogger<DiscordNewSessionCommand> _logger;
+
+    public DiscordNewSessionCommand(DiscordNewSessionHandler handler, ILogger<DiscordNewSessionCommand> logger)
+    {
+        _handler = handler;
+        _logger = logger;
+    }
+
+    public async Task ExecuteAsync(
+        [SlashCommandParameter(Name = "title", Description = "Game title")] string title,
+        [SlashCommandParameter(Name = "time", Description = "Session time (YYYY-MM-DD HH:mm or DD.MM.YYYY HH:mm)")] string time,
+        [SlashCommandParameter(Name = "seats", Description = "Maximum number of players")] long? seats = null,
+        [SlashCommandParameter(Name = "link", Description = "Join link")] string? link = null)
+    {
+        var guild = Context.Guild
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+
+        var timeResult = DiscordNewSessionHandler.ParseTimeInput(time);
+        if (!timeResult.IsSuccess)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($"X {timeResult.Error}"));
+            return;
+        }
+
+        var resolvedPermissions = GetResolvedPermissions(guild, Context.User.Id);
+
+        try
+        {
+            var view = await _handler.HandleAsync(
+                guildId: guild.Id.ToString(),
+                channelId: Context.Channel.Id.ToString(),
+                userId: Context.User.Id,
+                userDisplayName: Context.User.GlobalName ?? Context.User.Username,
+                resolvedPermissions: resolvedPermissions,
+                guildOwnerId: guild.OwnerId,
+                title: title,
+                scheduledAt: timeResult.Value,
+                maxPlayers: seats is null ? null : (int)seats.Value,
+                joinLink: link,
+                CancellationToken.None);
+
+            var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(view);
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message(new InteractionMessageProperties()
+                    .WithContent(":white_check_mark: **Session created successfully!**")
+                    .WithEmbeds(embeds)
+                    .WithComponents(actionRows)));
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($":no_entry: {ex.Message}"));
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to create session for user {UserId} in guild {GuildId}", Context.User.Id, guild.Id);
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message(":boom: An error occurred while creating the session."));
+        }
+    }
+
+    private static ulong GetResolvedPermissions(NetCord.Gateway.Guild guild, ulong userId)
+    {
+        if (!guild.Users.TryGetValue(userId, out var guildUser))
+            return 0;
+
+        ulong resolved = 0;
+        foreach (var roleId in guildUser.RoleIds)
+        {
+            if (guild.Roles.TryGetValue(roleId, out var role))
+                resolved |= (ulong)role.Permissions;
+        }
+
+        return resolved;
+    }
+}

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

@@ -0,0 +1,148 @@
+using Dapper;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed record TimeParseResult(bool IsSuccess, DateTimeOffset Value, string? Error);
+
+public sealed class DiscordNewSessionHandler(
+    NpgsqlDataSource dataSource,
+    DiscordPermissionChecker permissionChecker,
+    IPlatformMessenger messenger,
+    ILogger<DiscordNewSessionHandler> logger)
+{
+    public static TimeParseResult ParseTimeInput(string input)
+    {
+        if (DateTimeOffset.TryParseExact(
+            input.Trim(),
+            "yyyy-MM-dd HH:mm",
+            System.Globalization.CultureInfo.InvariantCulture,
+            System.Globalization.DateTimeStyles.AssumeUniversal,
+            out var result))
+        {
+            if (result < DateTimeOffset.UtcNow)
+                return new TimeParseResult(false, default, "Дата находится в прошлом.");
+
+            return new TimeParseResult(true, result.ToUniversalTime(), null);
+        }
+
+        if (DateTimeOffset.TryParseExact(
+            input.Trim(),
+            "dd.MM.yyyy HH:mm",
+            System.Globalization.CultureInfo.InvariantCulture,
+            System.Globalization.DateTimeStyles.AssumeUniversal,
+            out var altResult))
+        {
+            if (altResult < DateTimeOffset.UtcNow)
+                return new TimeParseResult(false, default, "Дата находится в прошлом.");
+
+            return new TimeParseResult(true, altResult.ToUniversalTime(), null);
+        }
+
+        return new TimeParseResult(false, default, "Некорректный формат даты. Используйте YYYY-MM-DD HH:mm или DD.MM.YYYY HH:mm");
+    }
+
+    public async Task<SessionBatchViewModel> HandleAsync(
+        string guildId,
+        string channelId,
+        ulong userId,
+        string userDisplayName,
+        ulong resolvedPermissions,
+        ulong guildOwnerId,
+        string title,
+        DateTimeOffset scheduledAt,
+        int? maxPlayers,
+        string? joinLink,
+        CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        var dbManagerUserIds = await connection.QueryAsync<ulong>(
+            @"SELECT CAST(p.external_user_id AS BIGINT)
+              FROM group_managers gm
+              JOIN players p ON p.id = gm.player_id
+              JOIN game_groups g ON g.id = gm.group_id
+              WHERE g.platform = 'Discord' AND g.external_group_id = @GuildId",
+            new { GuildId = guildId });
+
+        if (!permissionChecker.CanManageSchedule(guildOwnerId, userId, dbManagerUserIds, resolvedPermissions))
+        {
+            throw new UnauthorizedAccessException("⛔ Только owner, администратор или manager могут создавать сессии.");
+        }
+
+        await using var transaction = await connection.BeginTransactionAsync(cancellationToken);
+        try
+        {
+            await connection.ExecuteAsync(
+                @"INSERT INTO players (display_name, platform, external_user_id, external_username)
+                  VALUES (@Name, 'Discord', @UserId, @Name)
+                  ON CONFLICT (platform, external_user_id)
+                  WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
+                  DO UPDATE SET display_name = EXCLUDED.display_name,
+                                external_username = EXCLUDED.external_username",
+                new { Name = userDisplayName, UserId = userId.ToString() },
+                transaction);
+
+            var groupId = await connection.ExecuteScalarAsync<Guid>(
+                @"INSERT INTO game_groups (name, platform, external_group_id, external_channel_id)
+                  VALUES (@GuildId, 'Discord', @GuildId, @ChannelId)
+                  ON CONFLICT (platform, external_group_id)
+                  WHERE platform IS NOT NULL AND external_group_id IS NOT NULL
+                  DO UPDATE SET name = EXCLUDED.name,
+                                external_channel_id = COALESCE(EXCLUDED.external_channel_id, game_groups.external_channel_id)
+                  RETURNING id",
+                new { GuildId = guildId, ChannelId = channelId },
+                transaction);
+
+            await connection.ExecuteAsync(
+                @"INSERT INTO group_managers (group_id, player_id, role)
+                  SELECT @GroupId, p.id, @OwnerRole
+                  FROM players p
+                  WHERE p.platform = 'Discord' AND p.external_user_id = @UserId
+                  ON CONFLICT (group_id, player_id) DO NOTHING",
+                new { GroupId = groupId, UserId = userId.ToString(), OwnerRole = GroupManagerRoleExtensions.OwnerValue },
+                transaction);
+
+            var batchId = Guid.NewGuid();
+            var sessionId = await connection.ExecuteScalarAsync<Guid>(
+                @"INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, max_players)
+                  VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @MaxPlayers)
+                  RETURNING id",
+                new
+                {
+                    BatchId = batchId,
+                    GroupId = groupId,
+                    Title = title,
+                    Link = joinLink ?? string.Empty,
+                    ScheduledAt = scheduledAt.UtcDateTime,
+                    Status = SessionStatus.Planned,
+                    MaxPlayers = maxPlayers
+                },
+                transaction);
+
+            await transaction.CommitAsync(cancellationToken);
+            logger.LogInformation("Created session {SessionId} in guild {GuildId}", sessionId, guildId);
+
+            var sessions = new[] { new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, maxPlayers, joinLink ?? string.Empty) };
+            var view = SessionBatchViewBuilder.Build(title, sessions, Array.Empty<ParticipantBatchDto>());
+
+            await messenger.SendScheduleAsync(
+                new PlatformScheduleMessage(
+                    new PlatformGroup(PlatformKind.Discord, guildId, guildId, channelId),
+                    view,
+                    null),
+                cancellationToken);
+
+            return view;
+        }
+        catch
+        {
+            await transaction.RollbackAsync(cancellationToken);
+            throw;
+        }
+    }
+}

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

@@ -0,0 +1,117 @@
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+[SlashCommand("reschedule", "Initiate reschedule voting for a session")]
+public class DiscordRescheduleCommand : ApplicationCommandModule<SlashCommandContext>
+{
+    private readonly DiscordRescheduleHandler _handler;
+    private readonly ILogger<DiscordRescheduleCommand> _logger;
+
+    public DiscordRescheduleCommand(DiscordRescheduleHandler handler, ILogger<DiscordRescheduleCommand> logger)
+    {
+        _handler = handler;
+        _logger = logger;
+    }
+
+    public async Task ExecuteAsync(
+        [SlashCommandParameter(Name = "session", Description = "Session ID to reschedule")] string sessionIdText,
+        [SlashCommandParameter(Name = "option1", Description = "First time option (YYYY-MM-DD HH:mm)")] string option1,
+        [SlashCommandParameter(Name = "option2", Description = "Second time option (YYYY-MM-DD HH:mm)")] string option2,
+        [SlashCommandParameter(Name = "option3", Description = "Third time option (optional)")] string? option3 = null,
+        [SlashCommandParameter(Name = "deadline", Description = "Voting deadline (YYYY-MM-DD HH:mm)")] string deadline = "")
+    {
+        var guild = Context.Guild
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+
+        if (!Guid.TryParse(sessionIdText, out var sessionId))
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("❌ Некорректный ID сессии."));
+            return;
+        }
+
+        var options = new List<string> { option1, option2 };
+        if (!string.IsNullOrWhiteSpace(option3))
+            options.Add(option3);
+
+        var parsedOptions = new List<DateTimeOffset>();
+        foreach (var opt in options)
+        {
+            var result = DiscordNewSessionHandler.ParseTimeInput(opt);
+            if (!result.IsSuccess)
+            {
+                await Context.Interaction.SendResponseAsync(
+                    InteractionCallback.Message($"❌ {opt}: {result.Error}"));
+                return;
+            }
+            parsedOptions.Add(result.Value);
+        }
+
+        var deadlineResult = DiscordNewSessionHandler.ParseTimeInput(deadline);
+        if (!deadlineResult.IsSuccess)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($"❌ Дедлайн: {deadlineResult.Error}"));
+            return;
+        }
+
+        if (deadlineResult.Value >= parsedOptions.Min())
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("❌ Дедлайн должен быть раньше первого варианта времени."));
+            return;
+        }
+
+        var resolvedPermissions = GetResolvedPermissions(guild, Context.User.Id);
+
+        try
+        {
+            var result = await _handler.HandleAsync(
+                guildId: guild.Id.ToString(),
+                channelId: Context.Channel.Id.ToString(),
+                userId: Context.User.Id,
+                userDisplayName: Context.User.GlobalName ?? Context.User.Username,
+                resolvedPermissions: resolvedPermissions,
+                guildOwnerId: guild.OwnerId,
+                sessionId: sessionId,
+                options: parsedOptions,
+                deadline: deadlineResult.Value,
+                CancellationToken.None);
+
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message(
+                    $"🗳 Голосование за перенос запущено! Дедлайн: {deadlineResult.Value:yyyy-MM-dd HH:mm} UTC."));
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($":no_entry: {ex.Message}"));
+        }
+        catch (InvalidOperationException ex)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($":warning: {ex.Message}"));
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to initiate reschedule for session {SessionId}", sessionId);
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message(":boom: Ошибка при запуске голосования."));
+        }
+    }
+
+    private static ulong GetResolvedPermissions(NetCord.Gateway.Guild guild, ulong userId)
+    {
+        if (!guild.Users.TryGetValue(userId, out var guildUser))
+            return 0;
+        ulong resolved = 0;
+        foreach (var roleId in guildUser.RoleIds)
+        {
+            if (guild.Roles.TryGetValue(roleId, out var role))
+                resolved |= (ulong)role.Permissions;
+        }
+        return resolved;
+    }
+}

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

@@ -0,0 +1,155 @@
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+using Dapper;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.DiscordBot.Rendering;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
+using NetCord;
+using NetCord.Rest;
+using Npgsql;
+
+public sealed record DiscordRescheduleResult(Guid ProposalId, IReadOnlyList<RescheduleOptionDto> Options, DateTimeOffset Deadline);
+
+public sealed class DiscordRescheduleHandler(
+    NpgsqlDataSource dataSource,
+    DiscordPermissionChecker permissionChecker,
+    RestClient restClient,
+    ILogger<DiscordRescheduleHandler> logger)
+{
+    public async Task<DiscordRescheduleResult> HandleAsync(
+        string guildId,
+        string channelId,
+        ulong userId,
+        string userDisplayName,
+        ulong resolvedPermissions,
+        ulong guildOwnerId,
+        Guid sessionId,
+        IReadOnlyList<DateTimeOffset> options,
+        DateTimeOffset deadline,
+        CancellationToken ct)
+    {
+        // 1. Permission check + read-only validation (before Discord message)
+        await using var readConnection = await dataSource.OpenConnectionAsync(ct);
+
+        var dbManagerUserIds = await readConnection.QueryAsync<ulong>(
+            @"SELECT CAST(p.external_user_id AS BIGINT)
+              FROM group_managers gm
+              JOIN players p ON p.id = gm.player_id
+              JOIN game_groups g ON g.id = gm.group_id
+              WHERE g.platform = 'Discord' AND g.external_group_id = @GuildId",
+            new { GuildId = guildId });
+
+        if (!permissionChecker.CanManageSchedule(guildOwnerId, userId, dbManagerUserIds, resolvedPermissions))
+        {
+            throw new UnauthorizedAccessException("⛔ Только owner, администратор или manager могут переносить сессии.");
+        }
+
+        // 2. Ensure player exists
+        await readConnection.ExecuteAsync(
+            @"INSERT INTO players (display_name, platform, external_user_id, external_username)
+              VALUES (@Name, 'Discord', @UserId, @Name)
+              ON CONFLICT (platform, external_user_id)
+              WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
+              DO UPDATE SET display_name = EXCLUDED.display_name",
+            new { Name = userDisplayName, UserId = userId.ToString() });
+
+        // 3. Verify session exists
+        var session = await readConnection.QuerySingleOrDefaultAsync<RescheduleSessionInfoDto>(
+            """
+            SELECT s.title AS Title, s.scheduled_at AS CurrentScheduledAt
+            FROM sessions s
+            WHERE s.id = @SessionId AND s.status != @Cancelled
+            """,
+            new { SessionId = sessionId, Cancelled = SessionStatus.Cancelled });
+
+        if (session is null)
+            throw new InvalidOperationException("Сессия не найдена или отменена.");
+
+        // 4. Check no active proposal
+        var hasActive = await readConnection.ExecuteScalarAsync<bool>(
+            "SELECT EXISTS (SELECT 1 FROM reschedule_proposals WHERE session_id = @SessionId AND status IN ('AwaitingTime', 'Voting'))",
+            new { SessionId = sessionId });
+
+        if (hasActive)
+            throw new InvalidOperationException("Уже есть активный запрос на перенос этой сессии.");
+
+        // 5. Load participants for rendering
+        var participants = (await readConnection.QueryAsync<VoteParticipantDto>(
+            """
+            SELECT p.id AS PlayerId, p.display_name AS DisplayName, p.external_username AS TelegramUsername, 0 AS TelegramId
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId AND sp.is_gm = false AND sp.registration_status = @Active
+            """,
+            new { SessionId = sessionId, Active = ParticipantRegistrationStatus.Active })).ToList();
+
+        // 6. Prepare proposal data
+        var proposalId = Guid.NewGuid();
+        var optionDtos = options.Select((o, i) => new RescheduleOptionDto(Guid.NewGuid(), i + 1, o)).ToList();
+
+        // 7. Build and send Discord vote message BEFORE transaction
+        var (embed, actionRow) = DiscordRescheduleVotingRenderer.Render(session.Title, session.CurrentScheduledAt, deadline, optionDtos, participants, []);
+
+        var channelIdUlong = ulong.Parse(channelId);
+
+        // NOTE: Discord message is sent before DB transaction to avoid orphaned proposals
+        // if the send fails. There is a negligible race window where the message is visible
+        // before the DB commit; in practice users cannot click faster than the transaction commits.
+        var sentMessage = await restClient.SendMessageAsync(
+            channelIdUlong,
+            new MessageProperties()
+                .WithEmbeds(new[] { embed })
+                .WithComponents(new[] { actionRow }));
+
+        // 8. Create proposal + options + platform_messages in transaction
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+            await using var transaction = await connection.BeginTransactionAsync(ct);
+
+            await connection.ExecuteAsync(
+                """
+                INSERT INTO reschedule_proposals (id, session_id, proposed_by, source_platform, proposed_by_external_user_id, status, voting_deadline_at)
+                VALUES (@Id, @SessionId, NULL, 'Discord', @ProposedBy, 'Voting', @Deadline)
+                """,
+                new { Id = proposalId, SessionId = sessionId, ProposedBy = userId.ToString(), Deadline = deadline.UtcDateTime },
+                transaction);
+
+            foreach (var option in optionDtos)
+            {
+                await connection.ExecuteAsync(
+                    """
+                    INSERT INTO reschedule_options (id, proposal_id, proposed_at, display_order)
+                    VALUES (@OptionId, @ProposalId, @ProposedAt, @DisplayOrder)
+                    """,
+                    new { option.OptionId, ProposalId = proposalId, option.ProposedAt, option.DisplayOrder },
+                    transaction);
+            }
+
+            await connection.ExecuteAsync(
+                """
+                INSERT INTO platform_messages (platform, group_id, session_id, external_channel_id, external_message_id, purpose)
+                VALUES ('Discord', (SELECT id FROM game_groups WHERE platform = 'Discord' AND external_group_id = @GuildId), @SessionId, @ChannelId, @MessageId, 'reschedule_vote')
+                """,
+                new { GuildId = guildId, SessionId = sessionId, ChannelId = channelId, MessageId = sentMessage.Id.ToString() },
+                transaction);
+
+            await transaction.CommitAsync(ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Transaction failed after Discord message sent; deleting orphaned message");
+            try { await restClient.DeleteMessageAsync(channelIdUlong, sentMessage.Id); } catch { /* best effort */ }
+            throw;
+        }
+
+        logger.LogInformation("Discord reschedule voting started for session {SessionId}, proposal {ProposalId}", sessionId, proposalId);
+
+        return new DiscordRescheduleResult(proposalId, optionDtos, deadline);
+    }
+
+}
+
+internal sealed record RescheduleSessionInfoDto(string Title, DateTime CurrentScheduledAt);

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

@@ -0,0 +1,131 @@
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+using Dapper;
+using GmRelay.DiscordBot.Rendering;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
+using Npgsql;
+using NetCord.Rest;
+
+public sealed record DiscordRescheduleVoteInput(
+    Guid OptionId, ulong UserId, string InteractionId,
+    string GuildId, string ChannelId, string MessageId);
+
+public sealed class DiscordRescheduleVoteHandler(
+    NpgsqlDataSource dataSource,
+    RestClient restClient,
+    ILogger<DiscordRescheduleVoteHandler> logger)
+{
+    public async Task<string> HandleAsync(DiscordRescheduleVoteInput input, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        // 1. Load proposal + option
+        var proposal = await connection.QuerySingleOrDefaultAsync<VoteProposalDto>(
+            """
+            SELECT rp.id AS Id, rp.session_id AS SessionId, rp.voting_deadline_at AS VotingDeadlineAt,
+                   s.title AS Title, s.scheduled_at AS CurrentScheduledAt
+            FROM reschedule_options ro
+            JOIN reschedule_proposals rp ON rp.id = ro.proposal_id
+            JOIN sessions s ON s.id = rp.session_id
+            WHERE ro.id = @OptionId AND rp.status = 'Voting'
+            """,
+            new { input.OptionId },
+            transaction);
+
+        if (proposal is null)
+            return "Голосование уже завершено или не найдено.";
+
+        if (proposal.VotingDeadlineAt <= DateTimeOffset.UtcNow)
+            return "Дедлайн уже прошёл. Результаты скоро будут применены.";
+
+        // 2. Verify participant (Discord platform)
+        var playerId = await connection.ExecuteScalarAsync<Guid?>(
+            """
+            SELECT p.id
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId
+              AND p.platform = 'Discord'
+              AND p.external_user_id = @UserId
+              AND sp.is_gm = false
+              AND sp.registration_status = @Active
+            """,
+            new { proposal.SessionId, UserId = input.UserId.ToString(), Active = ParticipantRegistrationStatus.Active },
+            transaction);
+
+        if (playerId is null)
+            return "Вы не являетесь участником этой сессии.";
+
+        // 3. Upsert vote
+        await connection.ExecuteAsync(
+            """
+            INSERT INTO reschedule_option_votes (proposal_id, player_id, option_id)
+            VALUES (@ProposalId, @PlayerId, @OptionId)
+            ON CONFLICT (proposal_id, player_id) DO UPDATE
+            SET option_id = EXCLUDED.option_id, voted_at = now()
+            """,
+            new { ProposalId = proposal.Id, PlayerId = playerId.Value, input.OptionId },
+            transaction);
+
+        // 4. Reload participants, options, votes for re-rendering
+        var participants = (await connection.QueryAsync<VoteParticipantDto>(
+            """
+            SELECT p.id AS PlayerId, p.display_name AS DisplayName, p.external_username AS TelegramUsername, 0 AS TelegramId
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId AND sp.is_gm = false AND sp.registration_status = @Active
+            ORDER BY p.display_name
+            """,
+            new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
+            transaction)).ToList();
+
+        var options = (await connection.QueryAsync<RescheduleOptionDto>(
+            """
+            SELECT id AS OptionId, display_order AS DisplayOrder, proposed_at AS ProposedAt
+            FROM reschedule_options
+            WHERE proposal_id = @ProposalId
+            ORDER BY display_order
+            """,
+            new { ProposalId = proposal.Id },
+            transaction)).ToList();
+
+        var votes = (await connection.QueryAsync<RescheduleOptionVoteDto>(
+            """
+            SELECT rov.option_id AS OptionId, p.id AS PlayerId, p.display_name AS DisplayName, p.external_username AS TelegramUsername
+            FROM reschedule_option_votes rov
+            JOIN players p ON p.id = rov.player_id
+            WHERE rov.proposal_id = @ProposalId
+            ORDER BY rov.voted_at, p.display_name
+            """,
+            new { ProposalId = proposal.Id },
+            transaction)).ToList();
+
+        await transaction.CommitAsync(ct);
+
+        // 5. Re-render and update Discord vote message
+        var (embed, actionRow) = DiscordRescheduleVotingRenderer.Render(
+            proposal.Title, proposal.CurrentScheduledAt, proposal.VotingDeadlineAt,
+            options, participants, votes);
+
+        var channelIdUlong = ulong.Parse(input.ChannelId);
+        var messageIdUlong = ulong.Parse(input.MessageId);
+
+        try
+        {
+            await restClient.ModifyMessageAsync(channelIdUlong, messageIdUlong, options =>
+            {
+                options.Embeds = new[] { embed };
+                options.Components = new[] { actionRow };
+            });
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update Discord vote message for proposal {ProposalId}", proposal.Id);
+        }
+
+        return "Ваш голос учтён. До дедлайна его можно изменить.";
+    }
+}

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

@@ -0,0 +1,196 @@
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+using Dapper;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+
+public sealed class DiscordRescheduleVotingDeadlineService(
+    NpgsqlDataSource dataSource,
+    RescheduleVotingFinalizer finalizer,
+    IPlatformMessenger messenger,
+    ILogger<DiscordRescheduleVotingDeadlineService> 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
+        {
+            var proposalIds = await finalizer.GetDueProposalIdsAsync("Discord", ct);
+            foreach (var id in proposalIds)
+            {
+                await TryFinalizeAsync(id, ct);
+            }
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to process Discord reschedule proposals");
+        }
+    }
+
+    private async Task TryFinalizeAsync(Guid proposalId, CancellationToken ct)
+    {
+        try
+        {
+            var result = await finalizer.FinalizeAsync(proposalId, ct);
+            if (result is null)
+                return;
+
+            if (result.SourcePlatform != "Discord")
+                return;
+
+            await TryUpdateDiscordVoteMessage(result, ct);
+
+            if (result.SelectedOption is not null)
+            {
+                await TryUpdateBatchScheduleAsync(result, ct);
+            }
+
+            logger.LogInformation(
+                "Finalized Discord reschedule proposal {ProposalId} for session {SessionId} with outcome {Outcome}",
+                proposalId,
+                result.SessionId,
+                result.Decision.Outcome);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to finalize Discord proposal {ProposalId}", proposalId);
+        }
+    }
+
+    private async Task TryUpdateDiscordVoteMessage(RescheduleVotingFinalizerResult result, CancellationToken ct)
+    {
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+            var msgRef = await connection.QuerySingleOrDefaultAsync<PlatformMessageRefDto>(
+                """
+                SELECT g.external_group_id AS ExternalGroupId,
+                       COALESCE(pm.external_channel_id, g.external_channel_id, g.external_group_id) AS ExternalChannelId,
+                       pm.external_message_id AS ExternalMessageId
+                FROM platform_messages pm
+                JOIN game_groups g ON g.id = pm.group_id
+                WHERE pm.session_id = @SessionId AND pm.purpose = 'reschedule_vote' AND pm.platform = 'Discord'
+                ORDER BY pm.created_at DESC
+                LIMIT 1
+                """,
+                new { result.SessionId });
+
+            if (msgRef is null)
+                return;
+
+            var group = CreateDiscordGroup(msgRef);
+
+            await messenger.UpdateRescheduleVoteAsync(
+                new PlatformRescheduleVoteUpdate(
+                    group,
+                    new PlatformMessageRef(
+                        PlatformKind.Discord,
+                        msgRef.ExternalGroupId,
+                        null,
+                        msgRef.ExternalMessageId),
+                    result.ProposalId,
+                    result.SessionId,
+                    result.Title,
+                    result.CurrentScheduledAt,
+                    result.VotingDeadlineAt,
+                    result.Decision,
+                    result.SelectedOption,
+                    result.Options,
+                    result.Votes,
+                    result.Participants),
+                ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update Discord vote message for session {SessionId}", result.SessionId);
+        }
+    }
+
+    private async Task TryUpdateBatchScheduleAsync(RescheduleVotingFinalizerResult result, CancellationToken ct)
+    {
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+            var batchRef = await connection.QuerySingleOrDefaultAsync<PlatformMessageRefDto>(
+                """
+                SELECT g.external_group_id AS ExternalGroupId,
+                       COALESCE(pm.external_channel_id, g.external_channel_id, g.external_group_id) AS ExternalChannelId,
+                       pm.external_message_id AS ExternalMessageId
+                FROM platform_messages pm
+                JOIN game_groups g ON g.id = pm.group_id
+                WHERE pm.batch_id = @BatchId AND pm.purpose = 'schedule' AND pm.platform = 'Discord'
+                ORDER BY pm.created_at DESC
+                LIMIT 1
+                """,
+                new { result.BatchId });
+
+            if (batchRef is null)
+                return;
+
+            var sessions = (await connection.QueryAsync<SessionBatchDto>(
+                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers, join_link AS JoinLink FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
+                new { result.BatchId })).ToList();
+
+            var participants = (await connection.QueryAsync<ParticipantBatchDto>(
+                """
+                SELECT sp.session_id AS SessionId,
+                       p.display_name AS DisplayName,
+                       COALESCE(p.external_username, p.telegram_username) AS TelegramUsername,
+                       sp.registration_status AS RegistrationStatus
+                FROM session_participants sp
+                JOIN players p ON p.id = sp.player_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
+                """,
+                new { result.BatchId })).ToList();
+
+            var view = SessionBatchViewBuilder.Build(result.Title, sessions, participants);
+            var group = CreateDiscordGroup(batchRef);
+
+            await messenger.UpdateScheduleAsync(
+                new PlatformScheduleMessage(
+                    group,
+                    view,
+                    new PlatformMessageRef(
+                        PlatformKind.Discord,
+                        batchRef.ExternalGroupId,
+                        null,
+                        batchRef.ExternalMessageId)),
+                ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update Discord batch schedule for session {SessionId}", result.SessionId);
+        }
+    }
+
+    private static PlatformGroup CreateDiscordGroup(PlatformMessageRefDto message) =>
+        new(
+            PlatformKind.Discord,
+            message.ExternalGroupId,
+            message.ExternalGroupId,
+            message.ExternalChannelId);
+
+    internal sealed record PlatformMessageRefDto(
+        string ExternalGroupId,
+        string ExternalChannelId,
+        string ExternalMessageId);
+}

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

@@ -0,0 +1,64 @@
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed record DiscordSessionInteractionInput(
+    Guid SessionId,
+    string InteractionId,
+    string GuildId,
+    string ChannelId,
+    string MessageId,
+    ulong UserId,
+    string Username,
+    string? DisplayName);
+
+public static class DiscordSessionInteractionMapper
+{
+    public static bool TryParseCustomId(string customId, string expectedAction, out Guid sessionId)
+    {
+        sessionId = default;
+
+        var parts = customId.Split(':', 2);
+        return parts.Length == 2
+            && string.Equals(parts[0], expectedAction, StringComparison.Ordinal)
+            && Guid.TryParse(parts[1], out sessionId);
+    }
+
+    public static JoinSessionCommand CreateJoinCommand(DiscordSessionInteractionInput input) =>
+        new(
+            SessionId: input.SessionId,
+            User: CreateUser(input),
+            InteractionId: input.InteractionId,
+            Group: CreateGroup(input),
+            ScheduleMessage: CreateMessageRef(input));
+
+    public static LeaveSessionCommand CreateLeaveCommand(DiscordSessionInteractionInput input) =>
+        new(
+            SessionId: input.SessionId,
+            User: CreateUser(input),
+            InteractionId: input.InteractionId,
+            Group: CreateGroup(input),
+            ScheduleMessage: CreateMessageRef(input));
+
+    private static PlatformUser CreateUser(DiscordSessionInteractionInput input) =>
+        new(
+            PlatformKind.Discord,
+            input.UserId.ToString(System.Globalization.CultureInfo.InvariantCulture),
+            string.IsNullOrWhiteSpace(input.DisplayName) ? input.Username : input.DisplayName,
+            input.Username);
+
+    private static PlatformGroup CreateGroup(DiscordSessionInteractionInput input) =>
+        new(
+            PlatformKind.Discord,
+            input.GuildId,
+            input.GuildId,
+            input.ChannelId);
+
+    private static PlatformMessageRef CreateMessageRef(DiscordSessionInteractionInput input) =>
+        new(
+            PlatformKind.Discord,
+            input.GuildId,
+            null,
+            input.MessageId);
+}

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

@@ -0,0 +1,201 @@
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Platform;
+using System.Globalization;
+using NetCord;
+using NetCord.Rest;
+using NetCord.Services.ComponentInteractions;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed class DiscordSessionInteractionModule(
+    JoinSessionHandler joinSessionHandler,
+    LeaveSessionHandler leaveSessionHandler,
+    HandleRsvpHandler rsvpHandler,
+    DiscordRescheduleVoteHandler voteHandler,
+    DiscordInteractionReplyCache interactionReplies,
+    ILogger<DiscordSessionInteractionModule> logger) : ComponentInteractionModule<ButtonInteractionContext>
+{
+    [ComponentInteraction("join_session")]
+    public async Task JoinAsync(string sessionId)
+    {
+        if (!Guid.TryParse(sessionId, out var parsedSessionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(parsedSessionId);
+        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+        try
+        {
+            await joinSessionHandler.HandleAsync(
+                DiscordSessionInteractionMapper.CreateJoinCommand(input),
+                CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord join interaction for session {SessionId}", parsedSessionId);
+            await CompleteResponseAsync("Не удалось обработать кнопку.");
+            return;
+        }
+
+        await CompleteWithStoredReplyAsync(input.InteractionId);
+    }
+
+    [ComponentInteraction("leave_session")]
+    public async Task LeaveAsync(string sessionId)
+    {
+        if (!Guid.TryParse(sessionId, out var parsedSessionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(parsedSessionId);
+        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+        try
+        {
+            await leaveSessionHandler.HandleAsync(
+                DiscordSessionInteractionMapper.CreateLeaveCommand(input),
+                CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord leave interaction for session {SessionId}", parsedSessionId);
+            await CompleteResponseAsync("Не удалось обработать кнопку.");
+            return;
+        }
+
+        await CompleteWithStoredReplyAsync(input.InteractionId);
+    }
+
+    [ComponentInteraction("rsvp")]
+    public async Task RsvpAsync(string status, string sessionId)
+    {
+        if (!Guid.TryParse(sessionId, out var parsedSessionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var rsvpStatus = status switch
+        {
+            "confirm" => RsvpStatus.Confirmed,
+            "decline" => RsvpStatus.Declined,
+            _ => null
+        };
+
+        if (rsvpStatus is null)
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(parsedSessionId);
+        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+
+        try
+        {
+            await rsvpHandler.HandleAsync(
+                new HandleRsvpCommand(
+                    parsedSessionId,
+                    new PlatformUser(
+                        PlatformKind.Discord,
+                        Context.User.Id.ToString(CultureInfo.InvariantCulture),
+                        string.IsNullOrWhiteSpace(Context.User.GlobalName) ? Context.User.Username : Context.User.GlobalName,
+                        Context.User.Username),
+                    rsvpStatus,
+                    input.InteractionId,
+                    new PlatformGroup(
+                        PlatformKind.Discord,
+                        input.GuildId,
+                        input.GuildId,
+                        input.ChannelId),
+                    new PlatformMessageRef(
+                        PlatformKind.Discord,
+                        input.GuildId,
+                        null,
+                        input.MessageId)),
+                CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord RSVP interaction for session {SessionId}", parsedSessionId);
+            await CompleteResponseAsync("Не удалось обработать кнопку.");
+            return;
+        }
+
+        await CompleteWithStoredReplyAsync(input.InteractionId);
+    }
+
+    [ComponentInteraction("reschedule_vote")]
+    public async Task RescheduleVoteAsync(string optionId)
+    {
+        if (!Guid.TryParse(optionId, out var parsedOptionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Vote button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(Guid.Empty); // sessionId not needed for vote routing
+        var voteInput = new DiscordRescheduleVoteInput(
+            parsedOptionId,
+            Context.User.Id,
+            Context.Interaction.Id.ToString(System.Globalization.CultureInfo.InvariantCulture),
+            input.GuildId,
+            input.ChannelId,
+            input.MessageId);
+
+        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+
+        string replyText;
+        try
+        {
+            replyText = await voteHandler.HandleAsync(voteInput, CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord reschedule vote for option {OptionId}", parsedOptionId);
+            await CompleteResponseAsync("Не удалось обработать голос.");
+            return;
+        }
+
+        await CompleteResponseAsync(replyText);
+    }
+
+    private DiscordSessionInteractionInput CreateInput(Guid sessionId)
+    {
+        var guild = Context.Guild
+            ?? throw new InvalidOperationException("Session buttons can only be used in a guild.");
+        var message = Context.Interaction.Message
+            ?? throw new InvalidOperationException("Session button interaction must include a message.");
+
+        return new DiscordSessionInteractionInput(
+            SessionId: sessionId,
+            InteractionId: Context.Interaction.Id.ToString(System.Globalization.CultureInfo.InvariantCulture),
+            GuildId: guild.Id.ToString(CultureInfo.InvariantCulture),
+            ChannelId: Context.Channel.Id.ToString(CultureInfo.InvariantCulture),
+            MessageId: message.Id.ToString(CultureInfo.InvariantCulture),
+            UserId: Context.User.Id,
+            Username: Context.User.Username,
+            DisplayName: Context.User.GlobalName);
+    }
+
+    private async Task CompleteWithStoredReplyAsync(string interactionId)
+    {
+        var reply = interactionReplies.Take(interactionId);
+        await CompleteResponseAsync(reply?.Text ?? "Session updated.");
+    }
+
+    private Task CompleteResponseAsync(string text) =>
+        ModifyResponseAsync(options => options.Content = text);
+
+    private static InteractionCallbackProperties CreateEphemeralReply(string text) =>
+        InteractionCallback.Message(
+            new InteractionMessageProperties()
+                .WithContent(text)
+                .WithFlags(MessageFlags.Ephemeral));
+}

src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk.Worker">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <LangVersion>preview</LangVersion>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>dotnet-GmRelay.DiscordBot-issue-26</UserSecretsId>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Aspire.Npgsql" Version="13.2.2" />
+    <PackageReference Include="Dapper" Version="2.1.72" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.5" />
+    <PackageReference Include="NetCord.Hosting" Version="1.0.0-alpha.489" />
+    <PackageReference Include="NetCord.Hosting.Services" Version="1.0.0-alpha.489" />
+    <PackageReference Include="NetCord.Services" Version="1.0.0-alpha.489" />
+    <PackageReference Include="Npgsql" Version="10.0.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\GmRelay.ServiceDefaults\GmRelay.ServiceDefaults.csproj" />
+    <ProjectReference Include="..\GmRelay.Shared\GmRelay.Shared.csproj" />
+  </ItemGroup>
+</Project>

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

@@ -0,0 +1,17 @@
+using System.Collections.Concurrent;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.DiscordBot.Infrastructure.Discord;
+
+public sealed class DiscordInteractionReplyCache
+{
+    private readonly ConcurrentDictionary<string, PlatformInteractionReply> replies = new(StringComparer.Ordinal);
+
+    public void Store(PlatformInteractionReply reply) =>
+        replies[reply.InteractionId] = reply;
+
+    public PlatformInteractionReply? Take(string interactionId) =>
+        replies.TryRemove(interactionId, out var reply)
+            ? reply
+            : null;
+}

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

@@ -0,0 +1,22 @@
+namespace GmRelay.DiscordBot.Infrastructure.Discord;
+
+public sealed class DiscordPermissionChecker
+{
+    private const ulong AdministratorPermission = 0x8;
+
+    public bool CanManageSchedule(
+        ulong guildOwnerId,
+        ulong userId,
+        IEnumerable<ulong> dbManagerUserIds,
+        ulong resolvedPermissions)
+    {
+        if (userId == guildOwnerId)
+            return true;
+
+        if (dbManagerUserIds.Contains(userId))
+            return true;
+
+        return (resolvedPermissions & AdministratorPermission) == AdministratorPermission;
+    }
+}
+

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

@@ -0,0 +1,372 @@
+using System.Globalization;
+using System.Text;
+using GmRelay.DiscordBot.Rendering;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using Microsoft.Extensions.Logging;
+using NetCord;
+using NetCord.Rest;
+
+namespace GmRelay.DiscordBot.Infrastructure.Discord;
+
+public sealed class DiscordPlatformMessenger : IPlatformMessenger
+{
+    private readonly RestClient restClient;
+    private readonly DiscordInteractionReplyCache interactionReplies;
+    private readonly ILogger<DiscordPlatformMessenger>? logger;
+
+    public DiscordPlatformMessenger(
+        RestClient restClient,
+        DiscordInteractionReplyCache interactionReplies)
+        : this(restClient, interactionReplies, logger: null)
+    {
+    }
+
+    public DiscordPlatformMessenger(
+        RestClient restClient,
+        DiscordInteractionReplyCache interactionReplies,
+        ILogger<DiscordPlatformMessenger>? logger)
+    {
+        this.restClient = restClient;
+        this.interactionReplies = interactionReplies;
+        this.logger = logger;
+    }
+
+    public async Task<PlatformMessageRef> SendScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(message.View);
+
+        var channelId = GetChannelId(message.Group);
+
+        var msg = await restClient.SendMessageAsync(
+            channelId,
+            new MessageProperties()
+                .WithEmbeds(embeds)
+                .WithComponents(actionRows));
+
+        return new PlatformMessageRef(
+            PlatformKind.Discord,
+            message.Group.ExternalGroupId,
+            null,
+            msg.Id.ToString(CultureInfo.InvariantCulture));
+    }
+
+    public async Task UpdateScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        if (message.ExistingMessage is null)
+            return;
+
+        var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(message.View);
+
+        var channelId = GetChannelId(message.Group);
+        var messageId = ParseSnowflake(message.ExistingMessage.ExternalMessageId);
+
+        await restClient.ModifyMessageAsync(
+            channelId,
+            messageId,
+            options =>
+            {
+                options.Embeds = embeds;
+                options.Components = actionRows;
+            });
+    }
+
+    public async Task SendGroupMessageAsync(PlatformGroup group, string htmlText, CancellationToken ct)
+    {
+        await restClient.SendMessageAsync(GetChannelId(group), htmlText);
+    }
+
+    public async Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct)
+    {
+        await SendDirectContentAsync(message.Recipient, message.HtmlText, ct);
+    }
+
+    public Task AnswerInteractionAsync(PlatformInteractionReply reply, CancellationToken ct)
+    {
+        interactionReplies.Store(reply);
+        return Task.CompletedTask;
+    }
+
+    public Task SendCalendarFileAsync(PlatformCalendarFile file, CancellationToken ct)
+    {
+        return Task.CompletedTask;
+    }
+
+    public async Task<PlatformMessageRef> SendConfirmationRequestAsync(
+        PlatformConfirmationRequest request,
+        CancellationToken ct)
+    {
+        var channelId = GetChannelId(request.Group);
+        var message = await restClient.SendMessageAsync(
+            channelId,
+            new MessageProperties()
+                .WithEmbeds([BuildConfirmationEmbed(request)])
+                .WithComponents(BuildRsvpRows(request.SessionId, disabled: false)));
+
+        return new PlatformMessageRef(
+            PlatformKind.Discord,
+            request.Group.ExternalGroupId,
+            null,
+            message.Id.ToString(CultureInfo.InvariantCulture));
+    }
+
+    public async Task UpdateConfirmationRequestAsync(PlatformRsvpMessageUpdate update, CancellationToken ct)
+    {
+        if (update.Request.ExistingMessage is null)
+            return;
+
+        var channelId = GetChannelId(update.Request.Group);
+        var messageId = ParseSnowflake(update.Request.ExistingMessage.ExternalMessageId);
+        var components = BuildRsvpRows(update.Request.SessionId, update.DisableActions);
+
+        await restClient.ModifyMessageAsync(
+            channelId,
+            messageId,
+            options =>
+            {
+                options.Embeds = [BuildConfirmationEmbed(update.Request)];
+                options.Components = components;
+            });
+    }
+
+    public async Task<PlatformMessageRef> SendJoinLinkNotificationAsync(
+        PlatformJoinLinkNotification notification,
+        CancellationToken ct)
+    {
+        var channelId = GetChannelId(notification.Group);
+        var message = await restClient.SendMessageAsync(
+            channelId,
+            new MessageProperties().WithEmbeds([BuildJoinLinkEmbed(notification)]));
+
+        return new PlatformMessageRef(
+            PlatformKind.Discord,
+            notification.Group.ExternalGroupId,
+            null,
+            message.Id.ToString(CultureInfo.InvariantCulture));
+    }
+
+    public async Task SendDirectSessionNotificationAsync(
+        PlatformDirectSessionNotification notification,
+        CancellationToken ct)
+    {
+        try
+        {
+            await SendDirectContentAsync(
+                notification.Recipient,
+                BuildDirectContent(notification),
+                ct);
+        }
+        catch (Exception ex)
+        {
+            logger?.LogWarning(
+                ex,
+                "Failed to send Discord direct notification {NotificationKind} for session {SessionId} to user {ExternalUserId}",
+                notification.Kind,
+                notification.SessionId,
+                notification.Recipient.ExternalUserId);
+        }
+    }
+
+    public async Task SendRsvpOutcomeAsync(PlatformRsvpOutcomeNotification notification, CancellationToken ct)
+    {
+        if (notification.Kind == PlatformRsvpOutcomeKind.GroupAllConfirmed && notification.Group is not null)
+        {
+            await restClient.SendMessageAsync(
+                GetChannelId(notification.Group),
+                BuildRsvpGroupOutcomeContent(notification));
+            return;
+        }
+
+        var directKind = notification.Kind == PlatformRsvpOutcomeKind.GmPlayerDeclined
+            ? PlatformDirectSessionNotificationKind.RsvpDeclined
+            : PlatformDirectSessionNotificationKind.RsvpAllConfirmed;
+
+        foreach (var recipient in notification.Recipients)
+        {
+            await SendDirectSessionNotificationAsync(
+                new PlatformDirectSessionNotification(
+                    directKind,
+                    recipient,
+                    notification.SessionId,
+                    notification.Title,
+                    notification.ScheduledAt,
+                    ActorDisplayName: notification.ActorDisplayName),
+                ct);
+        }
+    }
+
+    public async Task UpdateRescheduleVoteAsync(PlatformRescheduleVoteUpdate update, CancellationToken ct)
+    {
+        var (embed, actionRow) = DiscordRescheduleVotingRenderer.Render(
+            update.Title,
+            update.CurrentScheduledAt,
+            update.VotingDeadlineAt,
+            update.Options,
+            update.Participants,
+            update.Votes);
+
+        var disabledRow = new ActionRowProperties();
+        foreach (var button in actionRow.OfType<ButtonProperties>())
+        {
+            disabledRow.Add(new ButtonProperties(
+                button.CustomId,
+                button.Label ?? string.Empty,
+                ButtonStyle.Secondary)
+            {
+                Disabled = true
+            });
+        }
+
+        var updatedEmbed = embed.WithDescription(
+            $"{embed.Description}\n\n{BuildRescheduleResultText(update)}");
+
+        await restClient.ModifyMessageAsync(
+            GetChannelId(update.Group),
+            ParseSnowflake(update.ExistingMessage.ExternalMessageId),
+            options =>
+            {
+                options.Embeds = [updatedEmbed];
+                options.Components = [disabledRow];
+            });
+    }
+
+    private static EmbedProperties BuildConfirmationEmbed(PlatformConfirmationRequest request)
+    {
+        var embed = new EmbedProperties()
+            .WithTitle($"Подтверждение: {request.Title}")
+            .WithDescription(BuildConfirmationDescription(request))
+            .WithColor(new Color(0x5865F2));
+
+        return embed.AddFields(
+        [
+            BuildParticipantField("Подтвердили", request.Participants, RsvpStatus.Confirmed),
+            BuildParticipantField("Отказались", request.Participants, RsvpStatus.Declined),
+            BuildParticipantField("Ожидаем ответ", request.Participants, RsvpStatus.Pending)
+        ]);
+    }
+
+    private static string BuildConfirmationDescription(PlatformConfirmationRequest request) =>
+        $"Время: **{request.ScheduledAt.FormatMoscow()}** (МСК)\n" +
+        "Подтвердите участие кнопкой ниже.";
+
+    private static EmbedFieldProperties BuildParticipantField(
+        string title,
+        IReadOnlyList<PlatformSessionParticipant> participants,
+        string status)
+    {
+        var values = participants
+            .Where(participant => participant.RsvpStatus == status)
+            .Select(FormatDiscordParticipant)
+            .ToList();
+
+        return new EmbedFieldProperties()
+            .WithName(title)
+            .WithValue(values.Count == 0 ? "—" : string.Join("\n", values))
+            .WithInline();
+    }
+
+    private static EmbedProperties BuildJoinLinkEmbed(PlatformJoinLinkNotification notification)
+    {
+        var mentions = notification.ConfirmedPlayers.Count == 0
+            ? "—"
+            : string.Join(", ", notification.ConfirmedPlayers.Select(p => Mention(p.User)));
+
+        return new EmbedProperties()
+            .WithTitle($"Ссылка на игру: {notification.Title}")
+            .WithDescription(
+                $"Время: **{notification.ScheduledAt.FormatMoscow()}** (МСК)\n" +
+                $"Ссылка: {notification.JoinLink}\n\n" +
+                $"Участники: {mentions}")
+            .WithUrl(notification.JoinLink)
+            .WithColor(new Color(0x57F287));
+    }
+
+    private static IReadOnlyList<ActionRowProperties> BuildRsvpRows(Guid sessionId, bool disabled)
+    {
+        var row = new ActionRowProperties();
+        row.Add(new ButtonProperties($"rsvp:confirm:{sessionId}", "Буду", ButtonStyle.Success)
+        {
+            Disabled = disabled
+        });
+        row.Add(new ButtonProperties($"rsvp:decline:{sessionId}", "Не смогу", ButtonStyle.Danger)
+        {
+            Disabled = disabled
+        });
+
+        return [row];
+    }
+
+    private static string BuildDirectContent(PlatformDirectSessionNotification notification)
+    {
+        var builder = new StringBuilder();
+        builder.AppendLine(notification.Kind switch
+        {
+            PlatformDirectSessionNotificationKind.ConfirmationRequest => "Нужно подтвердить участие",
+            PlatformDirectSessionNotificationKind.OneHourReminder => "Напоминание: сессия через час",
+            PlatformDirectSessionNotificationKind.JoinLink => "Ссылка на игру",
+            PlatformDirectSessionNotificationKind.RsvpAllConfirmed => "Все игроки подтвердили участие",
+            PlatformDirectSessionNotificationKind.RsvpDeclined => "Игрок отказался от участия",
+            PlatformDirectSessionNotificationKind.RescheduleApproved => "Сессия перенесена",
+            PlatformDirectSessionNotificationKind.RescheduleRejected => "Перенос сессии отклонен",
+            _ => "Уведомление по сессии"
+        });
+
+        builder.AppendLine();
+        builder.AppendLine($"**{notification.Title}**");
+        builder.AppendLine($"Время: **{notification.ScheduledAt.FormatMoscow()}** (МСК)");
+
+        if (!string.IsNullOrWhiteSpace(notification.JoinLink))
+            builder.AppendLine($"Ссылка: {notification.JoinLink}");
+
+        if (!string.IsNullOrWhiteSpace(notification.ActorDisplayName))
+            builder.AppendLine($"Игрок: {notification.ActorDisplayName}");
+
+        if (!string.IsNullOrWhiteSpace(notification.Reason))
+            builder.AppendLine($"Причина: {notification.Reason}");
+
+        return builder.ToString();
+    }
+
+    private static string BuildRsvpGroupOutcomeContent(PlatformRsvpOutcomeNotification notification) =>
+        $"Все участники подтвердили сессию **{notification.Title}** на " +
+        $"**{notification.ScheduledAt.FormatMoscow()}** (МСК).";
+
+    private static string BuildRescheduleResultText(PlatformRescheduleVoteUpdate update)
+    {
+        if (update.SelectedOption is not null)
+        {
+            return "Голосование завершено. " +
+                $"Победил вариант {update.SelectedOption.DisplayOrder}: " +
+                $"**{update.SelectedOption.ProposedAt.FormatMoscow()}** (МСК).";
+        }
+
+        return $"Голосование завершено. {update.Decision.Reason}";
+    }
+
+    private async Task SendDirectContentAsync(PlatformUser recipient, string content, CancellationToken ct)
+    {
+        var userId = ParseSnowflake(recipient.ExternalUserId);
+        var dm = await restClient.GetDMChannelAsync(userId, cancellationToken: ct);
+        await restClient.SendMessageAsync(
+            dm.Id,
+            new MessageProperties().WithContent(content),
+            cancellationToken: ct);
+    }
+
+    private static string FormatDiscordParticipant(PlatformSessionParticipant participant) =>
+        $"{Mention(participant.User)} ({participant.User.DisplayName})";
+
+    private static string Mention(PlatformUser user) => $"<@{user.ExternalUserId}>";
+
+    private static ulong GetChannelId(PlatformGroup group)
+    {
+        var channelId = group.ExternalChannelId ?? group.ExternalGroupId
+            ?? throw new InvalidOperationException("Discord group has no channel or group identifier.");
+
+        return ParseSnowflake(channelId);
+    }
+
+    private static ulong ParseSnowflake(string value) =>
+        ulong.Parse(value, CultureInfo.InvariantCulture);
+}

src/GmRelay.DiscordBot/Infrastructure/Health/DiscordHealthCheckHostedService.cs

@@ -0,0 +1,101 @@
+using System.Net;
+
+namespace GmRelay.DiscordBot.Infrastructure.Health;
+
+public sealed class DiscordHealthCheckHostedService : IHostedService
+{
+    private readonly ILogger<DiscordHealthCheckHostedService> _logger;
+    private readonly string _prefix;
+    private HttpListener? _listener;
+    private CancellationTokenSource? _cts;
+    private Task? _listenerTask;
+
+    public DiscordHealthCheckHostedService(
+        ILogger<DiscordHealthCheckHostedService> logger,
+        IConfiguration configuration)
+    {
+        _logger = logger;
+        _prefix = configuration.GetValue("HealthCheck:Prefix", "http://+:8082/")!;
+    }
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        _cts = new CancellationTokenSource();
+        _listener = new HttpListener();
+        _listener.Prefixes.Add(_prefix);
+        _listener.Start();
+
+        _logger.LogInformation("Discord health check server started on {Prefix}", _prefix);
+
+        _listenerTask = Task.Run(async () => await ListenAsync(_cts.Token), cancellationToken);
+
+        return Task.CompletedTask;
+    }
+
+    public async Task StopAsync(CancellationToken cancellationToken)
+    {
+        _cts?.Cancel();
+        _listener?.Stop();
+
+        if (_listenerTask != null)
+        {
+            await Task.WhenAny(_listenerTask, Task.Delay(TimeSpan.FromSeconds(5), cancellationToken));
+        }
+
+        _listener?.Close();
+        _logger.LogInformation("Discord health check server stopped");
+    }
+
+    private async Task ListenAsync(CancellationToken cancellationToken)
+    {
+        while (_listener?.IsListening == true && !cancellationToken.IsCancellationRequested)
+        {
+            try
+            {
+                var context = await _listener.GetContextAsync();
+                _ = Task.Run(() => HandleRequestAsync(context), cancellationToken);
+            }
+            catch (HttpListenerException) when (cancellationToken.IsCancellationRequested)
+            {
+                break;
+            }
+            catch (ObjectDisposedException)
+            {
+                break;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error in Discord health check listener");
+            }
+        }
+    }
+
+    private async Task HandleRequestAsync(HttpListenerContext context)
+    {
+        var response = context.Response;
+        try
+        {
+            var request = context.Request;
+
+            if (request.Url?.AbsolutePath == "/health")
+            {
+                response.StatusCode = (int)HttpStatusCode.OK;
+                response.ContentType = "application/json";
+                var body = "{\"status\":\"healthy\"}"u8.ToArray();
+                await response.OutputStream.WriteAsync(body);
+            }
+            else
+            {
+                response.StatusCode = (int)HttpStatusCode.NotFound;
+            }
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error handling Discord health check request");
+        }
+        finally
+        {
+            response.Close();
+        }
+    }
+}

src/GmRelay.DiscordBot/Infrastructure/Logging/DiscordGatewayLifecycleLogger.cs

@@ -0,0 +1,43 @@
+using NetCord.Gateway;
+using NetCord.Hosting.Gateway;
+
+namespace GmRelay.DiscordBot.Infrastructure.Logging;
+
+public sealed class DiscordGatewayLifecycleLogger(
+    ILogger<DiscordGatewayLifecycleLogger> logger)
+    : IConnectGatewayHandler,
+      IReadyGatewayHandler,
+      IDisconnectGatewayHandler,
+      IResumeGatewayHandler
+{
+    public ValueTask HandleAsync()
+    {
+        logger.LogInformation("Discord gateway connected");
+        return ValueTask.CompletedTask;
+    }
+
+    public ValueTask HandleAsync(ReadyEventArgs arg)
+    {
+        logger.LogInformation(
+            "Discord gateway ready for application {ApplicationId} in {GuildCount} guilds",
+            arg.ApplicationId,
+            arg.GuildIds.Count);
+
+        return ValueTask.CompletedTask;
+    }
+
+    public ValueTask HandleAsync(DisconnectEventArgs arg)
+    {
+        logger.LogWarning(
+            "Discord gateway disconnected; reconnect scheduled: {Reconnect}",
+            arg.Reconnect);
+
+        return ValueTask.CompletedTask;
+    }
+
+    ValueTask IResumeGatewayHandler.HandleAsync()
+    {
+        logger.LogInformation("Discord gateway session resumed");
+        return ValueTask.CompletedTask;
+    }
+}

src/GmRelay.DiscordBot/Infrastructure/Logging/SecretRedactor.cs

@@ -0,0 +1,14 @@
+using System.Text.RegularExpressions;
+
+namespace GmRelay.DiscordBot.Infrastructure.Logging;
+
+internal static partial class SecretRedactor
+{
+    public static string RedactConnectionString(string connectionString)
+    {
+        return PasswordPattern().Replace(connectionString, "$1***");
+    }
+
+    [GeneratedRegex(@"(?i)(Password\s*=\s*)[^;]+")]
+    private static partial Regex PasswordPattern();
+}

src/GmRelay.DiscordBot/Infrastructure/SystemClock.cs

@@ -0,0 +1,6 @@
+namespace GmRelay.DiscordBot.Infrastructure;
+
+public sealed class SystemClock : GmRelay.Shared.Platform.ISystemClock
+{
+    public DateTimeOffset UtcNow => DateTimeOffset.UtcNow;
+}

src/GmRelay.DiscordBot/Program.cs

@@ -0,0 +1,93 @@
+using GmRelay.DiscordBot;
+using GmRelay.DiscordBot.Features.Sessions;
+using GmRelay.DiscordBot.Infrastructure;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.DiscordBot.Infrastructure.Health;
+using GmRelay.DiscordBot.Infrastructure.Logging;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Confirmation.SendConfirmation;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Features.Reminders.SendJoinLink;
+using GmRelay.Shared.Features.Reminders.SendOneHourReminder;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Infrastructure.Scheduling;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using NetCord;
+using NetCord.Gateway;
+using NetCord.Hosting.Gateway;
+using NetCord.Hosting.Services.ApplicationCommands;
+using NetCord.Hosting.Services.ComponentInteractions;
+using NetCord.Services.ComponentInteractions;
+using Npgsql;
+
+var builder = Host.CreateApplicationBuilder(args);
+
+builder.AddServiceDefaults();
+
+var discordOptions = builder.Configuration
+    .GetRequiredSection("Discord")
+    .Get<DiscordOptions>() ?? new DiscordOptions();
+discordOptions.Validate();
+
+builder.Services.AddSingleton(discordOptions);
+
+builder.Services.AddSingleton<NpgsqlDataSource>(sp =>
+{
+    var config = sp.GetRequiredService<IConfiguration>();
+    var loggerFactory = sp.GetRequiredService<ILoggerFactory>();
+    var connectionString = config.GetConnectionString("gmrelaydb")
+        ?? throw new InvalidOperationException(
+            "ConnectionStrings:gmrelaydb is required. Set via environment variable ConnectionStrings__gmrelaydb.");
+
+    var logger = loggerFactory.CreateLogger("GmRelay.DiscordBot.Startup");
+    logger.LogInformation(
+        "Configured PostgreSQL data source with connection string {ConnectionString}",
+        SecretRedactor.RedactConnectionString(connectionString));
+
+    return NpgsqlDataSource.Create(connectionString);
+});
+
+builder.Services.AddSingleton<DiscordPermissionChecker>();
+builder.Services.AddSingleton<DiscordListSessionsHandler>();
+builder.Services.AddSingleton<DiscordNewSessionHandler>();
+builder.Services.AddSingleton<DiscordRescheduleHandler>();
+builder.Services.AddSingleton<DiscordRescheduleVoteHandler>();
+builder.Services.AddSingleton<IScheduleMessageUpdateLock, ScheduleMessageUpdateLock>();
+builder.Services.AddSingleton<JoinSessionHandler>();
+builder.Services.AddSingleton<LeaveSessionHandler>();
+builder.Services.AddSingleton<DiscordInteractionReplyCache>();
+builder.Services.AddSingleton<IPlatformMessenger, DiscordPlatformMessenger>();
+builder.Services.AddSingleton<ISystemClock, SystemClock>();
+builder.Services.AddSingleton(new PlatformSchedulerOptions(PlatformKind.Discord));
+builder.Services.AddSingleton<ISessionTriggerStore, DbSessionTriggerStore>();
+builder.Services.AddSingleton<PlatformDirectNotificationSender>();
+builder.Services.AddSingleton<SendConfirmationHandler>();
+builder.Services.AddSingleton<ISendConfirmationHandler>(sp => sp.GetRequiredService<SendConfirmationHandler>());
+builder.Services.AddSingleton<SendJoinLinkHandler>();
+builder.Services.AddSingleton<ISendJoinLinkHandler>(sp => sp.GetRequiredService<SendJoinLinkHandler>());
+builder.Services.AddSingleton<SendOneHourReminderHandler>();
+builder.Services.AddSingleton<ISendOneHourReminderHandler>(sp => sp.GetRequiredService<SendOneHourReminderHandler>());
+builder.Services.AddSingleton<HandleRsvpHandler>();
+builder.Services.AddSingleton<RescheduleVotingFinalizer>();
+builder.Services.AddHostedService<SessionSchedulerService>();
+builder.Services.AddHostedService<DiscordRescheduleVotingDeadlineService>();
+builder.Services.AddHostedService<DiscordHealthCheckHostedService>();
+
+builder.Services
+    .AddDiscordGateway(options =>
+    {
+        options.Token = discordOptions.Token;
+        options.Intents = GatewayIntents.Guilds;
+    })
+    .AddApplicationCommands()
+    .AddComponentInteractions<ButtonInteraction, ButtonInteractionContext>()
+    .AddGatewayHandlers(typeof(Program).Assembly);
+
+var host = builder.Build();
+
+host.AddSlashCommand("ping", "Checks whether GM-Relay Discord is online.", () => "Pong!");
+
+await host.RunAsync();

src/GmRelay.DiscordBot/Rendering/DiscordRescheduleVotingRenderer.cs

@@ -0,0 +1,67 @@
+namespace GmRelay.DiscordBot.Rendering;
+
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using NetCord;
+using NetCord.Rest;
+
+public static class DiscordRescheduleVotingRenderer
+{
+    public static (EmbedProperties Embed, ActionRowProperties ActionRow) Render(
+        string title,
+        DateTime currentTime,
+        DateTimeOffset deadline,
+        IReadOnlyList<RescheduleOptionDto> options,
+        IReadOnlyList<VoteParticipantDto> participants,
+        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 pending = participants.Where(p => !votedPlayerIds.Contains(p.PlayerId)).Select(p => p.DisplayName).ToList();
+
+        var sb = new System.Text.StringBuilder();
+        sb.AppendLine($"📅 Текущее время: {currentTime.FormatMoscow()} (МСК)");
+        sb.AppendLine($"⏳ Дедлайн: {deadline.FormatMoscow()} (МСК)");
+        sb.AppendLine();
+        sb.AppendLine("Выберите один из вариантов:");
+
+        foreach (var option in options.OrderBy(o => o.DisplayOrder))
+        {
+            var optionVotes = votesByOption.GetValueOrDefault(option.OptionId, []);
+            sb.AppendLine($"{option.DisplayOrder}. **{option.ProposedAt.FormatMoscow()}** (МСК) — {optionVotes.Count} голосов");
+            if (optionVotes.Count > 0)
+            {
+                sb.AppendLine($"   {string.Join(", ", optionVotes.Select(v => v.DisplayName))}");
+            }
+        }
+
+        if (pending.Count > 0)
+        {
+            sb.AppendLine();
+            sb.AppendLine($"Не проголосовали: {string.Join(", ", pending)}");
+        }
+
+        sb.AppendLine();
+        sb.AppendLine($"Голосов: {votedPlayerIds.Count}/{participants.Count}");
+        sb.AppendLine("Правило: побеждает вариант с большинством голосов к дедлайну; при ничьей перенос не применяется.");
+
+        var embed = new EmbedProperties()
+            .WithTitle($"🔄 Перенос сессии «{title}»")
+            .WithDescription(sb.ToString())
+            .WithColor(new Color(0xFEE75C));
+
+        var actionRow = new ActionRowProperties();
+        foreach (var option in options.OrderBy(o => o.DisplayOrder))
+        {
+            actionRow.Add(new ButtonProperties(
+                $"reschedule_vote:{option.OptionId}",
+                $"{option.DisplayOrder}. {FormatButtonTime(option.ProposedAt)}",
+                ButtonStyle.Primary));
+        }
+
+        return (embed, actionRow);
+    }
+
+    private static string FormatButtonTime(DateTimeOffset utc)
+        => utc.ToOffset(TimeSpan.FromHours(3)).ToString("dd.MM HH:mm", System.Globalization.CultureInfo.InvariantCulture);
+}

src/GmRelay.DiscordBot/Rendering/DiscordSessionBatchRenderer.cs

@@ -0,0 +1,125 @@
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+using NetCord;
+using NetCord.Rest;
+
+namespace GmRelay.DiscordBot.Rendering;
+
+public static class DiscordSessionBatchRenderer
+{
+    public static (IReadOnlyList<EmbedProperties> Embeds, IReadOnlyList<ActionRowProperties> ActionRows) Render(SessionBatchViewModel view)
+    {
+        var embeds = new List<EmbedProperties>();
+        var actionRows = new List<ActionRowProperties>();
+
+        foreach (var session in view.Sessions)
+        {
+            var embed = BuildEmbed(view.Title, session);
+            embeds.Add(embed);
+
+            if (session.AvailableActions.Count > 0)
+            {
+                var actionRow = new ActionRowProperties();
+                foreach (var action in session.AvailableActions)
+                {
+                    actionRow.Add(new ButtonProperties(
+                        $"{action.ActionKey}:{action.SessionId}",
+                        action.Label,
+                        ButtonStyle.Primary));
+                }
+                actionRows.Add(actionRow);
+            }
+        }
+
+        return (embeds, actionRows);
+    }
+
+    private static EmbedProperties BuildEmbed(string title, SessionViewItem session)
+    {
+        var embed = new EmbedProperties()
+            .WithTitle($"{title} — {session.ScheduledAt.FormatMoscow()}");
+
+        if (SessionStatus.IsCancelled(session.Status))
+        {
+            embed = embed.WithDescription("❌ Сессия отменена");
+        }
+        else
+        {
+            embed = embed.WithDescription(BuildPlayerDescription(session));
+        }
+
+        var fields = new List<EmbedFieldProperties>
+        {
+            new EmbedFieldProperties()
+                .WithName("👥 Заполненность")
+                .WithValue(session.MaxPlayers.HasValue
+                    ? $"{session.ActivePlayerCount}/{session.MaxPlayers.Value}"
+                    : $"{session.ActivePlayerCount}")
+                .WithInline(),
+
+            new EmbedFieldProperties()
+                .WithName("⏳ Лист ожидания")
+                .WithValue(session.WaitlistedPlayers.Count > 0
+                    ? session.WaitlistedPlayers.Count.ToString()
+                    : "—")
+                .WithInline(),
+
+            new EmbedFieldProperties()
+                .WithName("📊 Статус")
+                .WithValue(FormatStatus(session.Status))
+                .WithInline()
+        };
+
+        if (!string.IsNullOrEmpty(session.JoinLink))
+        {
+            embed = embed.WithUrl(session.JoinLink);
+        }
+
+        embed = embed.WithColor(GetColor(session));
+        embed = embed.AddFields(fields);
+
+        return embed;
+    }
+
+    private static string BuildPlayerDescription(SessionViewItem session)
+    {
+        if (session.ActivePlayers.Count == 0)
+            return "👥 Пока никто не записался";
+
+        var lines = session.ActivePlayers
+            .Select(p => $"• {p.DisplayName}")
+            .ToList();
+
+        if (session.WaitlistedPlayers.Count > 0)
+        {
+            lines.Add("");
+            lines.Add($"⏳ Лист ожидания ({session.WaitlistedPlayers.Count}):");
+            lines.AddRange(session.WaitlistedPlayers.Select(p => $"• {p.DisplayName}"));
+        }
+
+        return string.Join('\n', lines);
+    }
+
+    private static string FormatStatus(string status) => status switch
+    {
+        SessionStatus.Planned => "Запланирована",
+        SessionStatus.ConfirmationSent => "Ожидает подтверждения",
+        SessionStatus.Confirmed => "Подтверждена",
+        SessionStatus.Cancelled => "Отменена",
+        _ => status
+    };
+
+    private static Color GetColor(SessionViewItem session)
+    {
+        if (SessionStatus.IsCancelled(session.Status))
+            return new Color(0xED4245);
+
+        if (session.Status == SessionStatus.Confirmed)
+            return new Color(0x5865F2);
+
+        if (session.MaxPlayers.HasValue && session.ActivePlayerCount >= session.MaxPlayers.Value)
+            return new Color(0xFEE75C);
+
+        return new Color(0x57F287);
+    }
+}

src/GmRelay.DiscordBot/packages.lock.json

@@ -0,0 +1,679 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Aspire.Npgsql": {
+        "type": "Direct",
+        "requested": "[13.2.2, )",
+        "resolved": "13.2.2",
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+        "dependencies": {
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src/GmRelay.ServiceDefaults/packages.lock.json

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+        "type": "Transitive",
+        "resolved": "1.15.3",
+        "contentHash": "fX+fkCysfPut+qCcT3bKqyX4QN9Saf4CgX8HLOHywEVD+Xr7sULtfuypITpoDysjx8R59dn/3mWhgimMH8cm/g=="
+      },
+      "OpenTelemetry.Api.ProviderBuilderExtensions": {
+        "type": "Transitive",
+        "resolved": "1.15.3",
+        "contentHash": "SYn0lqYDwLMWhv/zlNGsQcl2yX++yTumanX46bmOZE/ZDOd1WjPBO2kZaZgKLEZTZk48pavIFGJ6vOvxXgWVFQ==",
+        "dependencies": {
+          "OpenTelemetry.Api": "1.15.3"
+        }
+      },
+      "Polly.Core": {
+        "type": "Transitive",
+        "resolved": "8.4.2",
+        "contentHash": "BpE2I6HBYYA5tF0Vn4eoQOGYTYIK1BlF5EXVgkWGn3mqUUjbXAr13J6fZVbp7Q3epRR8yshacBMlsHMhpOiV3g=="
+      },
+      "Polly.Extensions": {
+        "type": "Transitive",
+        "resolved": "8.4.2",
+        "contentHash": "GZ9vRVmR0jV2JtZavt+pGUsQ1O1cuRKG7R7VOZI6ZDy9y6RNPvRvXK1tuS4ffUrv8L0FTea59oEuQzgS0R7zSA==",
+        "dependencies": {
+          "Polly.Core": "8.4.2"
+        }
+      },
+      "Polly.RateLimiting": {
+        "type": "Transitive",
+        "resolved": "8.4.2",
+        "contentHash": "ehTImQ/eUyO07VYW2WvwSmU9rRH200SKJ/3jku9rOkyWE0A2JxNFmAVms8dSn49QLSjmjFRRSgfNyOgr/2PSmA==",
+        "dependencies": {
+          "Polly.Core": "8.4.2"
+        }
+      }
+    }
+  }
+}

src/GmRelay.Shared/DapperAotModule.cs

@@ -0,0 +1 @@
+[module: Dapper.DapperAot]

src/GmRelay.Shared/Domain/CalendarSubscriptionFilter.cs

@@ -0,0 +1,7 @@
+namespace GmRelay.Shared.Domain;
+
+public enum CalendarSubscriptionFilter
+{
+    AllMyGroups = 0,
+    SpecificGroup = 1
+}

src/GmRelay.Shared/Domain/MoscowTime.cs

@@ -21,7 +21,7 @@ public static class MoscowTime
 
     public static bool TryParseMoscow(string text, out DateTimeOffset utcTime)
     {
-        if (DateTime.TryParseExact(text, new[] { "dd.MM.yyyy HH:mm", "dd.MM.yyyy H:mm", "d.MM.yyyy HH:mm" }, 
+        if (DateTime.TryParseExact(text, new[] { "dd.MM.yyyy HH:mm", "dd.MM.yyyy H:mm", "d.MM.yyyy HH:mm" },
             System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.None, out var localDt))
         {
             utcTime = new DateTimeOffset(localDt, MoscowOffset).ToUniversalTime();

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

@@ -0,0 +1,356 @@
+using System.Globalization;
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Logging;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Confirmation.HandleRsvp;
+
+public sealed record HandleRsvpCommand(
+    Guid SessionId,
+    PlatformUser User,
+    string Status,
+    string InteractionId,
+    PlatformGroup Group,
+    PlatformMessageRef ConfirmationMessage);
+
+internal sealed record RsvpCounts(int Total, int Confirmed, int Declined);
+
+internal sealed record RsvpSessionContext(
+    Guid GroupId,
+    string Title,
+    DateTime ScheduledAt,
+    string Status);
+
+internal sealed record ParticipantRsvpRow(
+    string Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername,
+    string RsvpStatus,
+    string RegistrationStatus,
+    bool IsGm);
+
+internal sealed record RsvpRecipientRow(
+    string Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername);
+
+public sealed class HandleRsvpHandler(
+    NpgsqlDataSource dataSource,
+    IPlatformMessenger messenger,
+    ILogger<HandleRsvpHandler> logger)
+{
+    public async Task HandleAsync(HandleRsvpCommand command, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        var participantExists = await connection.ExecuteScalarAsync<bool>(
+            """
+            SELECT EXISTS (
+                SELECT 1
+                FROM session_participants sp
+                JOIN players p ON p.id = sp.player_id
+                WHERE sp.session_id = @SessionId
+                  AND COALESCE(p.platform, 'Telegram') = @Platform
+                  AND COALESCE(p.external_user_id, p.telegram_id::TEXT) = @ExternalUserId
+                  AND sp.is_gm = false
+                  AND sp.registration_status = @Active
+            )
+            """,
+            new
+            {
+                command.SessionId,
+                Platform = command.User.Platform.ToString(),
+                command.User.ExternalUserId,
+                Active = ParticipantRegistrationStatus.Active
+            },
+            transaction);
+
+        if (!participantExists)
+        {
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(
+                    command.InteractionId,
+                    "Вы не являетесь участником этой сессии."),
+                ct);
+            return;
+        }
+
+        var updated = await connection.ExecuteAsync(
+            """
+            UPDATE session_participants
+            SET    rsvp_status  = @Status,
+                   responded_at = now()
+            WHERE  session_id = @SessionId
+              AND  player_id = (
+                    SELECT id
+                    FROM players
+                    WHERE COALESCE(platform, 'Telegram') = @Platform
+                      AND COALESCE(external_user_id, telegram_id::TEXT) = @ExternalUserId
+                    LIMIT 1
+              )
+              AND  registration_status = @Active
+              AND  rsvp_status != @Status
+            """,
+            new
+            {
+                command.SessionId,
+                command.Status,
+                Platform = command.User.Platform.ToString(),
+                command.User.ExternalUserId,
+                Active = ParticipantRegistrationStatus.Active
+            },
+            transaction);
+
+        if (updated == 0)
+        {
+            var alreadyText = command.Status == RsvpStatus.Confirmed
+                ? "Вы уже подтвердили участие."
+                : "Вы уже отказались от участия.";
+
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.InteractionId, alreadyText),
+                ct);
+            return;
+        }
+
+        var session = await connection.QuerySingleAsync<RsvpSessionContext>(
+            """
+            SELECT s.group_id AS GroupId,
+                   s.title,
+                   s.scheduled_at AS ScheduledAt,
+                   s.status AS Status
+            FROM sessions s
+            WHERE s.id = @SessionId
+            """,
+            new { command.SessionId },
+            transaction);
+
+        if (command.Status == RsvpStatus.Declined)
+        {
+            var decision = RsvpFlowRules.Evaluate(
+                command.Status,
+                session.Status,
+                totalParticipants: 0,
+                confirmedParticipants: 0);
+
+            if (decision.ShouldRevertSessionToConfirmationSent)
+            {
+                await connection.ExecuteAsync(
+                    """
+                    UPDATE sessions
+                    SET    status = @ConfirmationSent, updated_at = now()
+                    WHERE  id = @SessionId AND status = @Confirmed
+                    """,
+                    new
+                    {
+                        command.SessionId,
+                        ConfirmationSent = SessionStatus.ConfirmationSent,
+                        Confirmed = SessionStatus.Confirmed
+                    },
+                    transaction);
+            }
+
+            var gmRecipients = (await GetGmRecipientsAsync(connection, session.GroupId, transaction))
+                .ToList();
+
+            await transaction.CommitAsync(ct);
+
+            if (gmRecipients.Count > 0)
+            {
+                await messenger.SendRsvpOutcomeAsync(
+                    new PlatformRsvpOutcomeNotification(
+                        PlatformRsvpOutcomeKind.GmPlayerDeclined,
+                        Group: null,
+                        gmRecipients,
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt,
+                        ActorDisplayName: command.User.DisplayName),
+                    ct);
+            }
+
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.InteractionId, decision.CallbackText),
+                ct);
+        }
+        else
+        {
+            var counts = await connection.QuerySingleAsync<RsvpCounts>(
+                """
+                SELECT
+                    count(*)                                         AS Total,
+                    count(*) FILTER (WHERE rsvp_status = @Confirmed) AS Confirmed,
+                    count(*) FILTER (WHERE rsvp_status = @Declined)  AS Declined
+                FROM session_participants
+                WHERE session_id = @SessionId AND is_gm = false
+                  AND registration_status = @Active
+                """,
+                new
+                {
+                    command.SessionId,
+                    Confirmed = RsvpStatus.Confirmed,
+                    Declined = RsvpStatus.Declined,
+                    Active = ParticipantRegistrationStatus.Active
+                },
+                transaction);
+
+            var decision = RsvpFlowRules.Evaluate(command.Status, session.Status, counts.Total, counts.Confirmed);
+
+            if (decision.ShouldMarkSessionConfirmed)
+            {
+                await connection.ExecuteAsync(
+                    """
+                    UPDATE sessions
+                    SET    status = @Confirmed, updated_at = now()
+                    WHERE  id = @SessionId
+                    """,
+                    new { command.SessionId, Confirmed = SessionStatus.Confirmed },
+                    transaction);
+            }
+
+            var gmRecipients = decision.ShouldNotifyGm
+                ? (await GetGmRecipientsAsync(connection, session.GroupId, transaction)).ToList()
+                : [];
+
+            await transaction.CommitAsync(ct);
+
+            if (decision.ShouldNotifyGroup)
+            {
+                await messenger.SendRsvpOutcomeAsync(
+                    new PlatformRsvpOutcomeNotification(
+                        PlatformRsvpOutcomeKind.GroupAllConfirmed,
+                        command.Group,
+                        [],
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt),
+                    ct);
+            }
+
+            if (decision.ShouldNotifyGm && gmRecipients.Count > 0)
+            {
+                await messenger.SendRsvpOutcomeAsync(
+                    new PlatformRsvpOutcomeNotification(
+                        PlatformRsvpOutcomeKind.GmAllConfirmed,
+                        Group: null,
+                        gmRecipients,
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt),
+                    ct);
+            }
+
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.InteractionId, decision.CallbackText),
+                ct);
+        }
+
+        await UpdateConfirmationMessage(command, session, ct);
+    }
+
+    private async Task UpdateConfirmationMessage(
+        HandleRsvpCommand command,
+        RsvpSessionContext session,
+        CancellationToken ct)
+    {
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+            var participants = (await connection.QueryAsync<ParticipantRsvpRow>(
+                """
+                SELECT COALESCE(p.platform, 'Telegram') AS Platform,
+                       COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                       p.display_name AS DisplayName,
+                       COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                       sp.rsvp_status AS RsvpStatus,
+                       sp.registration_status AS RegistrationStatus,
+                       sp.is_gm AS IsGm
+                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 sp.responded_at NULLS LAST
+                """,
+                new { command.SessionId, Active = ParticipantRegistrationStatus.Active }))
+                .Select(ToParticipant)
+                .ToList();
+
+            var disableActions = participants.Count > 0 &&
+                participants.All(participant => participant.RsvpStatus == RsvpStatus.Confirmed);
+
+            await messenger.UpdateConfirmationRequestAsync(
+                new PlatformRsvpMessageUpdate(
+                    new PlatformConfirmationRequest(
+                        command.Group,
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt,
+                        participants,
+                        command.ConfirmationMessage),
+                    disableActions),
+                ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update confirmation message for session {SessionId}", command.SessionId);
+        }
+    }
+
+    private static async Task<IEnumerable<PlatformUser>> GetGmRecipientsAsync(
+        NpgsqlConnection connection,
+        Guid groupId,
+        NpgsqlTransaction transaction)
+    {
+        var rows = await connection.QueryAsync<RsvpRecipientRow>(
+            """
+            SELECT DISTINCT
+                   COALESCE(p.platform, 'Telegram') AS Platform,
+                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                   p.display_name AS DisplayName,
+                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername
+            FROM group_managers gm
+            JOIN players p ON p.id = gm.player_id
+            WHERE gm.group_id = @GroupId
+            UNION
+            SELECT DISTINCT
+                   COALESCE(p.platform, 'Telegram') AS Platform,
+                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                   p.display_name AS DisplayName,
+                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername
+            FROM game_groups g
+            JOIN players p ON p.telegram_id = g.gm_telegram_id
+            WHERE g.id = @GroupId
+              AND g.gm_telegram_id IS NOT NULL
+            """,
+            new { GroupId = groupId },
+            transaction);
+
+        return rows.Select(row => new PlatformUser(
+            ParsePlatform(row.Platform),
+            row.ExternalUserId,
+            row.DisplayName,
+            row.ExternalUsername));
+    }
+
+    private static PlatformSessionParticipant ToParticipant(ParticipantRsvpRow row) =>
+        new(
+            new PlatformUser(
+                ParsePlatform(row.Platform),
+                row.ExternalUserId,
+                row.DisplayName,
+                row.ExternalUsername),
+            row.RsvpStatus,
+            row.RegistrationStatus,
+            row.IsGm);
+
+    private static PlatformKind ParsePlatform(string platform) =>
+        Enum.Parse<PlatformKind>(platform, ignoreCase: true);
+}

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

@@ -1,8 +1,8 @@
 using GmRelay.Shared.Domain;
 
-namespace GmRelay.Bot.Features.Confirmation.HandleRsvp;
+namespace GmRelay.Shared.Features.Confirmation.HandleRsvp;
 
-internal sealed record RsvpFlowDecision(
+public sealed record RsvpFlowDecision(
     string CallbackText,
     bool ShouldAlertGm,
     bool ShouldRevertSessionToConfirmationSent,
@@ -10,7 +10,7 @@ internal sealed record RsvpFlowDecision(
     bool ShouldNotifyGroup,
     bool ShouldNotifyGm);
 
-internal static class RsvpFlowRules
+public static class RsvpFlowRules
 {
     public static RsvpFlowDecision Evaluate(
         string requestedStatus,
@@ -21,7 +21,7 @@ internal static class RsvpFlowRules
         if (requestedStatus == RsvpStatus.Declined)
         {
             return new RsvpFlowDecision(
-                CallbackText: "\u0412\u044b \u043e\u0442\u043a\u0430\u0437\u0430\u043b\u0438\u0441\u044c \u043e\u0442 \u0443\u0447\u0430\u0441\u0442\u0438\u044f.",
+                CallbackText: "Вы отказались от участия.",
                 ShouldAlertGm: true,
                 ShouldRevertSessionToConfirmationSent: currentSessionStatus == SessionStatus.Confirmed,
                 ShouldMarkSessionConfirmed: false,
@@ -32,7 +32,7 @@ internal static class RsvpFlowRules
         var everyoneConfirmed = confirmedParticipants == totalParticipants;
 
         return new RsvpFlowDecision(
-            CallbackText: "\u0412\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438 \u0443\u0447\u0430\u0441\u0442\u0438\u0435!",
+            CallbackText: "Вы подтвердили участие!",
             ShouldAlertGm: false,
             ShouldRevertSessionToConfirmationSent: false,
             ShouldMarkSessionConfirmed: everyoneConfirmed,

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

@@ -0,0 +1,6 @@
+namespace GmRelay.Shared.Features.Confirmation.SendConfirmation;
+
+public interface ISendConfirmationHandler
+{
+    Task HandleAsync(Guid sessionId, CancellationToken ct);
+}

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

@@ -0,0 +1,217 @@
+using System.Globalization;
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Logging;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Confirmation.SendConfirmation;
+
+internal sealed record ConfirmationSessionRow(
+    Guid Id,
+    string Title,
+    DateTime ScheduledAt,
+    Guid GroupId,
+    string Platform,
+    string ExternalGroupId,
+    string DisplayName,
+    string? ExternalChannelId,
+    int? ThreadId,
+    string NotificationMode);
+
+internal sealed record ConfirmationParticipantRow(
+    string Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername,
+    string RsvpStatus,
+    string RegistrationStatus,
+    bool IsGm);
+
+public sealed class SendConfirmationHandler(
+    NpgsqlDataSource dataSource,
+    IPlatformMessenger messenger,
+    PlatformDirectNotificationSender directSender,
+    ILogger<SendConfirmationHandler> logger) : ISendConfirmationHandler
+{
+    public async Task HandleAsync(Guid sessionId, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+        var session = await connection.QuerySingleOrDefaultAsync<ConfirmationSessionRow>(
+            """
+            SELECT s.id,
+                   s.title,
+                   s.scheduled_at AS ScheduledAt,
+                   s.group_id AS GroupId,
+                   COALESCE(g.platform, 'Telegram') AS Platform,
+                   COALESCE(g.external_group_id, g.telegram_chat_id::TEXT) AS ExternalGroupId,
+                   g.name AS DisplayName,
+                   COALESCE(g.external_channel_id, g.telegram_chat_id::TEXT) AS ExternalChannelId,
+                   s.thread_id AS ThreadId,
+                   s.notification_mode AS NotificationMode
+            FROM sessions s
+            JOIN game_groups g ON g.id = s.group_id
+            WHERE s.id = @SessionId AND s.status = @Planned
+            """,
+            new { SessionId = sessionId, Planned = SessionStatus.Planned });
+
+        if (session is null)
+        {
+            logger.LogWarning("Session {SessionId} not found or not in Planned status", sessionId);
+            return;
+        }
+
+        var participants = (await connection.QueryAsync<ConfirmationParticipantRow>(
+            """
+            SELECT COALESCE(p.platform, 'Telegram') AS Platform,
+                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                   p.display_name AS DisplayName,
+                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                   sp.rsvp_status AS RsvpStatus,
+                   sp.registration_status AS RegistrationStatus,
+                   sp.is_gm AS IsGm
+            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 sp.created_at ASC
+            """,
+            new { SessionId = sessionId, Active = ParticipantRegistrationStatus.Active }))
+            .Select(ToParticipant)
+            .ToList();
+
+        if (participants.Count == 0)
+        {
+            logger.LogWarning("Session {SessionId} has no non-GM participants", sessionId);
+            return;
+        }
+
+        var group = CreateGroup(session);
+        var message = await messenger.SendConfirmationRequestAsync(
+            new PlatformConfirmationRequest(
+                group,
+                session.Id,
+                session.Title,
+                session.ScheduledAt,
+                participants),
+            ct);
+
+        await connection.ExecuteAsync(
+            """
+            UPDATE sessions
+            SET status = @Status,
+                confirmation_message_id = @MessageId,
+                confirmation_sent_at = now(),
+                updated_at = now()
+            WHERE id = @SessionId
+              AND confirmation_sent_at IS NULL
+            """,
+            new
+            {
+                SessionId = sessionId,
+                Status = SessionStatus.ConfirmationSent,
+                MessageId = TryGetTelegramMessageId(message)
+            });
+
+        await PersistPlatformMessageAsync(
+            connection,
+            message,
+            session.GroupId,
+            session.Id,
+            batchId: null,
+            purpose: "confirmation");
+
+        var mode = SessionNotificationModeExtensions.FromDatabaseValue(session.NotificationMode);
+        if (mode.ShouldSendDirectMessages())
+        {
+            await directSender.SendAsync(
+                PlatformDirectSessionNotificationKind.ConfirmationRequest,
+                participants.Select(p => p.User),
+                session.Id,
+                session.Title,
+                session.ScheduledAt,
+                joinLink: null,
+                actorDisplayName: null,
+                reason: null,
+                ct);
+        }
+
+        logger.LogInformation(
+            "Confirmation sent for session {SessionId} ({Title}), platform={Platform}, message_id={MessageId}",
+            sessionId,
+            session.Title,
+            message.Platform,
+            message.ExternalMessageId);
+    }
+
+    private static PlatformSessionParticipant ToParticipant(ConfirmationParticipantRow row) =>
+        new(
+            new PlatformUser(
+                ParsePlatform(row.Platform),
+                row.ExternalUserId,
+                row.DisplayName,
+                row.ExternalUsername),
+            row.RsvpStatus,
+            row.RegistrationStatus,
+            row.IsGm);
+
+    private static PlatformGroup CreateGroup(ConfirmationSessionRow row) =>
+        new(
+            ParsePlatform(row.Platform),
+            row.ExternalGroupId,
+            row.DisplayName,
+            row.ExternalChannelId,
+            row.ThreadId?.ToString(CultureInfo.InvariantCulture));
+
+    private static PlatformKind ParsePlatform(string platform) =>
+        Enum.Parse<PlatformKind>(platform, ignoreCase: true);
+
+    private static int? TryGetTelegramMessageId(PlatformMessageRef message) =>
+        message.Platform == PlatformKind.Telegram &&
+        int.TryParse(message.ExternalMessageId, NumberStyles.Integer, CultureInfo.InvariantCulture, out var messageId)
+            ? messageId
+            : null;
+
+    private static Task PersistPlatformMessageAsync(
+        NpgsqlConnection connection,
+        PlatformMessageRef message,
+        Guid groupId,
+        Guid? sessionId,
+        Guid? batchId,
+        string purpose) =>
+        connection.ExecuteAsync(
+            """
+            INSERT INTO platform_messages (
+                platform,
+                group_id,
+                batch_id,
+                session_id,
+                external_channel_id,
+                external_thread_id,
+                external_message_id,
+                purpose)
+            VALUES (
+                @Platform,
+                @GroupId,
+                @BatchId,
+                @SessionId,
+                @ExternalChannelId,
+                @ExternalThreadId,
+                @ExternalMessageId,
+                @Purpose)
+            """,
+            new
+            {
+                Platform = message.Platform.ToString(),
+                GroupId = groupId,
+                BatchId = batchId,
+                SessionId = sessionId,
+                ExternalChannelId = message.ExternalGroupId,
+                message.ExternalThreadId,
+                message.ExternalMessageId,
+                Purpose = purpose
+            });
+}

src/GmRelay.Shared/Features/Notifications/PlatformDirectNotificationSender.cs

@@ -0,0 +1,50 @@
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Logging;
+
+namespace GmRelay.Shared.Features.Notifications;
+
+public sealed class PlatformDirectNotificationSender(
+    IPlatformMessenger messenger,
+    ILogger<PlatformDirectNotificationSender> logger)
+{
+    public async Task SendAsync(
+        PlatformDirectSessionNotificationKind kind,
+        IEnumerable<PlatformUser> recipients,
+        Guid sessionId,
+        string title,
+        DateTime scheduledAt,
+        string? joinLink,
+        string? actorDisplayName,
+        string? reason,
+        CancellationToken ct)
+    {
+        foreach (var recipient in recipients)
+        {
+            try
+            {
+                await messenger.SendDirectSessionNotificationAsync(
+                    new PlatformDirectSessionNotification(
+                        kind,
+                        recipient,
+                        sessionId,
+                        title,
+                        scheduledAt,
+                        joinLink,
+                        actorDisplayName,
+                        reason),
+                    ct);
+            }
+            catch (Exception ex)
+            {
+                logger.LogWarning(
+                    ex,
+                    "Failed to send {NotificationKind} notification for session {SessionId} to {Platform} user {ExternalUserId} ({DisplayName})",
+                    kind,
+                    sessionId,
+                    recipient.Platform,
+                    recipient.ExternalUserId,
+                    recipient.DisplayName);
+            }
+        }
+    }
+}

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

@@ -0,0 +1,6 @@
+namespace GmRelay.Shared.Features.Reminders.SendJoinLink;
+
+public interface ISendJoinLinkHandler
+{
+    Task HandleAsync(Guid sessionId, CancellationToken ct);
+}

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

@@ -0,0 +1,228 @@
+using System.Globalization;
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Logging;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Reminders.SendJoinLink;
+
+internal sealed record JoinLinkSessionRow(
+    Guid Id,
+    Guid GroupId,
+    string Title,
+    string JoinLink,
+    DateTime ScheduledAt,
+    string Platform,
+    string ExternalGroupId,
+    string DisplayName,
+    string? ExternalChannelId,
+    int? ThreadId,
+    string NotificationMode);
+
+internal sealed record JoinLinkPlayerRow(
+    string Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername,
+    string RsvpStatus,
+    string RegistrationStatus,
+    bool IsGm);
+
+public sealed class SendJoinLinkHandler(
+    NpgsqlDataSource dataSource,
+    IPlatformMessenger messenger,
+    PlatformDirectNotificationSender directSender,
+    ILogger<SendJoinLinkHandler> logger) : ISendJoinLinkHandler
+{
+    public async Task HandleAsync(Guid sessionId, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+        var session = await connection.QuerySingleOrDefaultAsync<JoinLinkSessionRow>(
+            """
+            SELECT s.id,
+                   s.group_id AS GroupId,
+                   s.title,
+                   s.join_link AS JoinLink,
+                   s.scheduled_at AS ScheduledAt,
+                   COALESCE(g.platform, 'Telegram') AS Platform,
+                   COALESCE(g.external_group_id, g.telegram_chat_id::TEXT) AS ExternalGroupId,
+                   g.name AS DisplayName,
+                   COALESCE(g.external_channel_id, g.telegram_chat_id::TEXT) AS ExternalChannelId,
+                   s.thread_id AS ThreadId,
+                   s.notification_mode AS NotificationMode
+            FROM sessions s
+            JOIN game_groups g ON g.id = s.group_id
+            WHERE s.id = @SessionId
+              AND s.status = @Confirmed
+              AND (
+                    (COALESCE(g.platform, 'Telegram') = 'Telegram' AND s.link_message_id IS NULL)
+                    OR (
+                        COALESCE(g.platform, 'Telegram') <> 'Telegram'
+                        AND NOT EXISTS (
+                            SELECT 1
+                            FROM platform_messages pm
+                            WHERE pm.session_id = s.id
+                              AND pm.platform = COALESCE(g.platform, 'Telegram')
+                              AND pm.purpose = 'join_link'
+                        )
+                    )
+                  )
+            """,
+            new { SessionId = sessionId, Confirmed = SessionStatus.Confirmed });
+
+        if (session is null)
+        {
+            logger.LogWarning("Session {SessionId} not eligible for join link", sessionId);
+            return;
+        }
+
+        var players = (await connection.QueryAsync<JoinLinkPlayerRow>(
+            """
+            SELECT COALESCE(p.platform, 'Telegram') AS Platform,
+                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                   p.display_name AS DisplayName,
+                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername,
+                   sp.rsvp_status AS RsvpStatus,
+                   sp.registration_status AS RegistrationStatus,
+                   sp.is_gm AS IsGm
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId
+              AND sp.rsvp_status = @Confirmed
+              AND sp.registration_status = @Active
+            ORDER BY sp.created_at ASC
+            """,
+            new
+            {
+                SessionId = sessionId,
+                Confirmed = RsvpStatus.Confirmed,
+                Active = ParticipantRegistrationStatus.Active
+            }))
+            .Select(ToParticipant)
+            .ToList();
+
+        var group = CreateGroup(session);
+        var message = await messenger.SendJoinLinkNotificationAsync(
+            new PlatformJoinLinkNotification(
+                group,
+                session.Id,
+                session.Title,
+                session.ScheduledAt,
+                session.JoinLink,
+                players),
+            ct);
+
+        await connection.ExecuteAsync(
+            """
+            UPDATE sessions
+            SET    link_message_id = @MessageId, updated_at = now()
+            WHERE  id = @SessionId
+            """,
+            new
+            {
+                SessionId = sessionId,
+                MessageId = TryGetTelegramMessageId(message)
+            });
+
+        await PersistPlatformMessageAsync(
+            connection,
+            message,
+            session.GroupId,
+            session.Id,
+            batchId: null,
+            purpose: "join_link");
+
+        var mode = SessionNotificationModeExtensions.FromDatabaseValue(session.NotificationMode);
+        if (mode.ShouldSendDirectMessages())
+        {
+            await directSender.SendAsync(
+                PlatformDirectSessionNotificationKind.JoinLink,
+                players.Select(p => p.User),
+                session.Id,
+                session.Title,
+                session.ScheduledAt,
+                session.JoinLink,
+                actorDisplayName: null,
+                reason: null,
+                ct);
+        }
+
+        logger.LogInformation(
+            "Join link sent for session {SessionId} ({Title}), platform={Platform}, message_id={MessageId}",
+            sessionId,
+            session.Title,
+            message.Platform,
+            message.ExternalMessageId);
+    }
+
+    private static PlatformSessionParticipant ToParticipant(JoinLinkPlayerRow row) =>
+        new(
+            new PlatformUser(
+                ParsePlatform(row.Platform),
+                row.ExternalUserId,
+                row.DisplayName,
+                row.ExternalUsername),
+            row.RsvpStatus,
+            row.RegistrationStatus,
+            row.IsGm);
+
+    private static PlatformGroup CreateGroup(JoinLinkSessionRow row) =>
+        new(
+            ParsePlatform(row.Platform),
+            row.ExternalGroupId,
+            row.DisplayName,
+            row.ExternalChannelId,
+            row.ThreadId?.ToString(CultureInfo.InvariantCulture));
+
+    private static PlatformKind ParsePlatform(string platform) =>
+        Enum.Parse<PlatformKind>(platform, ignoreCase: true);
+
+    private static int? TryGetTelegramMessageId(PlatformMessageRef message) =>
+        message.Platform == PlatformKind.Telegram &&
+        int.TryParse(message.ExternalMessageId, NumberStyles.Integer, CultureInfo.InvariantCulture, out var messageId)
+            ? messageId
+            : null;
+
+    private static Task PersistPlatformMessageAsync(
+        NpgsqlConnection connection,
+        PlatformMessageRef message,
+        Guid groupId,
+        Guid? sessionId,
+        Guid? batchId,
+        string purpose) =>
+        connection.ExecuteAsync(
+            """
+            INSERT INTO platform_messages (
+                platform,
+                group_id,
+                batch_id,
+                session_id,
+                external_channel_id,
+                external_thread_id,
+                external_message_id,
+                purpose)
+            VALUES (
+                @Platform,
+                @GroupId,
+                @BatchId,
+                @SessionId,
+                @ExternalChannelId,
+                @ExternalThreadId,
+                @ExternalMessageId,
+                @Purpose)
+            """,
+            new
+            {
+                Platform = message.Platform.ToString(),
+                GroupId = groupId,
+                BatchId = batchId,
+                SessionId = sessionId,
+                ExternalChannelId = message.ExternalGroupId,
+                message.ExternalThreadId,
+                message.ExternalMessageId,
+                Purpose = purpose
+            });
+}

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

@@ -0,0 +1,6 @@
+namespace GmRelay.Shared.Features.Reminders.SendOneHourReminder;
+
+public interface ISendOneHourReminderHandler
+{
+    Task HandleAsync(Guid sessionId, CancellationToken ct);
+}

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

@@ -1,27 +1,35 @@
 using Dapper;
-using GmRelay.Bot.Features.Notifications;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Logging;
 using Npgsql;
 
-namespace GmRelay.Bot.Features.Reminders.SendOneHourReminder;
+namespace GmRelay.Shared.Features.Reminders.SendOneHourReminder;
 
-internal sealed record OneHourReminderSession(
+internal sealed record OneHourReminderSessionRow(
     Guid Id,
     string Title,
     string JoinLink,
     DateTime ScheduledAt,
     string NotificationMode);
 
+internal sealed record OneHourReminderRecipientRow(
+    string Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername);
+
 public sealed class SendOneHourReminderHandler(
     NpgsqlDataSource dataSource,
-    DirectSessionNotificationSender directSender,
-    ILogger<SendOneHourReminderHandler> logger)
+    PlatformDirectNotificationSender directSender,
+    ILogger<SendOneHourReminderHandler> logger) : ISendOneHourReminderHandler
 {
     public async Task HandleAsync(Guid sessionId, CancellationToken ct)
     {
         await using var connection = await dataSource.OpenConnectionAsync(ct);
 
-        var session = await connection.QuerySingleOrDefaultAsync<OneHourReminderSession>(
+        var session = await connection.QuerySingleOrDefaultAsync<OneHourReminderSessionRow>(
             """
             SELECT id,
                    title,
@@ -46,10 +54,12 @@ public sealed class SendOneHourReminderHandler(
             return;
         }
 
-        var recipients = (await connection.QueryAsync<DirectNotificationRecipient>(
+        var recipients = (await connection.QueryAsync<OneHourReminderRecipientRow>(
             """
-            SELECT p.telegram_id AS TelegramId,
-                   p.display_name AS DisplayName
+            SELECT COALESCE(p.platform, 'Telegram') AS Platform,
+                   COALESCE(p.external_user_id, p.telegram_id::TEXT) AS ExternalUserId,
+                   p.display_name AS DisplayName,
+                   COALESCE(p.external_username, p.telegram_username) AS ExternalUsername
             FROM session_participants sp
             JOIN players p ON p.id = sp.player_id
             WHERE sp.session_id = @SessionId
@@ -62,20 +72,27 @@ public sealed class SendOneHourReminderHandler(
                 SessionId = sessionId,
                 Active = ParticipantRegistrationStatus.Active,
                 Declined = RsvpStatus.Declined
-            })).ToList();
+            }))
+            .Select(row => new PlatformUser(
+                ParsePlatform(row.Platform),
+                row.ExternalUserId,
+                row.DisplayName,
+                row.ExternalUsername))
+            .ToList();
 
         var mode = SessionNotificationModeExtensions.FromDatabaseValue(session.NotificationMode);
         if (mode.ShouldSendDirectMessages() && recipients.Count > 0)
         {
-            var text = $"""
-                ⏰ <b>Игра начнётся примерно через 1 час</b>
-
-                📌 <b>{System.Net.WebUtility.HtmlEncode(session.Title)}</b>
-                📅 {session.ScheduledAt.FormatMoscow()} (МСК)
-                🔗 {System.Net.WebUtility.HtmlEncode(session.JoinLink)}
-                """;
-
-            await directSender.SendAsync(recipients, text, "one-hour-reminder", session.Id, ct);
+            await directSender.SendAsync(
+                PlatformDirectSessionNotificationKind.OneHourReminder,
+                recipients,
+                session.Id,
+                session.Title,
+                session.ScheduledAt,
+                session.JoinLink,
+                actorDisplayName: null,
+                reason: null,
+                ct);
         }
 
         await connection.ExecuteAsync(
@@ -94,4 +111,7 @@ public sealed class SendOneHourReminderHandler(
             session.Title,
             session.NotificationMode);
     }
+
+    private static PlatformKind ParsePlatform(string platform) =>
+        Enum.Parse<PlatformKind>(platform, ignoreCase: true);
 }

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

@@ -1,31 +1,32 @@
+using System.Globalization;
 using Dapper;
 using Npgsql;
-using Telegram.Bot;
-using Telegram.Bot.Types;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
+using Microsoft.Extensions.Logging;
 
-namespace GmRelay.Bot.Features.Sessions.CreateSession;
+namespace GmRelay.Shared.Features.Sessions.CreateSession;
 
 public sealed record JoinSessionCommand(
     Guid SessionId,
-    long TelegramUserId,
-    string DisplayName,
-    string? TelegramUsername,
-    string CallbackQueryId,
-    long ChatId,
-    int MessageId);
+    PlatformUser User,
+    string InteractionId,
+    PlatformGroup Group,
+    PlatformMessageRef ScheduleMessage);
 
 // DTOs for AOT compilation
-internal sealed record JoinSessionBatchDto(Guid BatchId, string Title, int? MaxPlayers);
+internal sealed record JoinSessionBatchDto(Guid BatchId, string Title, string Status, int? MaxPlayers);
 
 public sealed class JoinSessionHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
+    IScheduleMessageUpdateLock scheduleUpdateLock,
     ILogger<JoinSessionHandler> logger)
 {
     public async Task HandleAsync(JoinSessionCommand command, CancellationToken ct)
     {
+        await using var updateLock = await scheduleUpdateLock.AcquireAsync(command.ScheduleMessage, ct);
         await using var connection = await dataSource.OpenConnectionAsync(ct);
         await using var transaction = await connection.BeginTransactionAsync(ct);
         var transactionCommitted = false;
@@ -33,17 +34,40 @@ public sealed class JoinSessionHandler(
         try
         {
             // 1. Убеждаемся, что игрок есть в базе
+            var platform = command.User.Platform.ToString();
+            var legacyTelegramId = command.User.Platform == PlatformKind.Telegram
+                ? long.Parse(command.User.ExternalUserId, CultureInfo.InvariantCulture)
+                : (long?)null;
+            var legacyTelegramUsername = command.User.Platform == PlatformKind.Telegram
+                ? command.User.ExternalUsername
+                : null;
+
             var playerId = await connection.ExecuteScalarAsync<Guid>(
-                @"INSERT INTO players (telegram_id, display_name, telegram_username) 
-                  VALUES (@TgId, @Name, @Username)
-                  ON CONFLICT (telegram_id) DO UPDATE SET display_name = EXCLUDED.display_name, telegram_username = EXCLUDED.telegram_username
+                @"INSERT INTO players (telegram_id, display_name, telegram_username, platform, external_user_id, external_username)
+                  VALUES (@LegacyTelegramId, @Name, @LegacyTelegramUsername, @Platform, @ExternalUserId, @ExternalUsername)
+                  ON CONFLICT (platform, external_user_id)
+                  WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
+                  DO UPDATE
+                  SET display_name = EXCLUDED.display_name,
+                      telegram_username = COALESCE(EXCLUDED.telegram_username, players.telegram_username),
+                      platform = EXCLUDED.platform,
+                      external_user_id = EXCLUDED.external_user_id,
+                      external_username = EXCLUDED.external_username
                   RETURNING id;",
-                new { TgId = command.TelegramUserId, Name = command.DisplayName, Username = command.TelegramUsername },
+                new
+                {
+                    LegacyTelegramId = legacyTelegramId,
+                    Name = command.User.DisplayName,
+                    LegacyTelegramUsername = legacyTelegramUsername,
+                    Platform = platform,
+                    command.User.ExternalUserId,
+                    command.User.ExternalUsername
+                },
                 transaction);
 
             // 2. Блокируем сессию на время расчета мест, чтобы параллельные нажатия не переполнили состав.
             var batchInfo = await connection.QuerySingleOrDefaultAsync<JoinSessionBatchDto>(
-                @"SELECT batch_id as BatchId, title as Title, max_players as MaxPlayers
+                @"SELECT batch_id as BatchId, title as Title, status as Status, max_players as MaxPlayers
                   FROM sessions
                   WHERE id = @SessionId
                   FOR UPDATE",
@@ -53,7 +77,14 @@ public sealed class JoinSessionHandler(
             if (batchInfo is null)
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия не найдена.", cancellationToken: ct);
+                await AnswerAsync(command.InteractionId, "Сессия не найдена.", ct);
+                return;
+            }
+
+            if (SessionStatus.IsCancelled(batchInfo.Status))
+            {
+                await transaction.RollbackAsync(ct);
+                await AnswerAsync(command.InteractionId, "Сессия уже отменена.", ct);
                 return;
             }
 
@@ -74,7 +105,7 @@ public sealed class JoinSessionHandler(
                 var alreadyText = existingRegistrationStatus == ParticipantRegistrationStatus.Waitlisted
                     ? "Вы уже в листе ожидания!"
                     : "Вы уже записаны!";
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, alreadyText, cancellationToken: ct);
+                await AnswerAsync(command.InteractionId, alreadyText, ct);
                 return;
             }
 
@@ -108,13 +139,13 @@ public sealed class JoinSessionHandler(
             if (inserted == 0)
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Вы уже записаны!", cancellationToken: ct);
+                await AnswerAsync(command.InteractionId, "Вы уже записаны!", ct);
                 return;
             }
 
             // Загружаем весь батч для перерисовки
             var batchSessions = await connection.QueryAsync<SessionBatchDto>(
-                @"SELECT id as SessionId, scheduled_at as ScheduledAt, status as Status, max_players as MaxPlayers
+                @"SELECT id as SessionId, scheduled_at as ScheduledAt, status as Status, max_players as MaxPlayers, join_link as JoinLink
                   FROM sessions
                   WHERE batch_id = @BatchId
                   ORDER BY scheduled_at",
@@ -123,7 +154,7 @@ public sealed class JoinSessionHandler(
             var batchParticipants = await connection.QueryAsync<ParticipantBatchDto>(
                 @"SELECT sp.session_id as SessionId,
                          p.display_name as DisplayName,
-                         p.telegram_username as TelegramUsername,
+                         COALESCE(p.external_username, p.telegram_username) as TelegramUsername,
                          sp.registration_status as RegistrationStatus
                   FROM session_participants sp
                   JOIN players p ON sp.player_id = p.id
@@ -136,20 +167,18 @@ public sealed class JoinSessionHandler(
             transactionCommitted = true;
 
             // 4. Перерисовываем сообщение
-            var renderResult = SessionBatchRenderer.Render(batchInfo.Title, batchSessions.ToList(), batchParticipants.ToList());
-
-            await bot.EditMessageText(
-                chatId: command.ChatId,
-                messageId: command.MessageId,
-                text: renderResult.Text,
-                parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
-                replyMarkup: renderResult.Markup,
-                cancellationToken: ct);
+            var view = SessionBatchViewBuilder.Build(batchInfo.Title, batchSessions.ToList(), batchParticipants.ToList());
+            await messenger.UpdateScheduleAsync(
+                new PlatformScheduleMessage(
+                    command.Group,
+                    view,
+                    command.ScheduleMessage),
+                ct);
 
             var callbackText = registrationStatus == ParticipantRegistrationStatus.Waitlisted
                 ? "Основной состав заполнен. Вы добавлены в лист ожидания."
                 : "Вы успешно записаны!";
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, callbackText, cancellationToken: ct);
+            await AnswerAsync(command.InteractionId, callbackText, ct);
         }
         catch (Exception ex)
         {
@@ -162,7 +191,10 @@ public sealed class JoinSessionHandler(
             var errorText = transactionCommitted
                 ? "Регистрация сохранена, но не удалось обновить сообщение расписания."
                 : "Произошла ошибка при регистрации.";
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, errorText, cancellationToken: ct);
+            await AnswerAsync(command.InteractionId, errorText, ct);
         }
     }
+
+    private Task AnswerAsync(string interactionId, string text, CancellationToken ct) =>
+        messenger.AnswerInteractionAsync(new PlatformInteractionReply(interactionId, text), ct);
 }