fix(shared): enable dapper aot for session handlers

Move neutral join/leave handlers into GmRelay.Shared so Telegram and Discord share capacity, waitlist, duplicate-click, and schedule-update behavior.

Add Discord component routing for join_session and leave_session buttons with deferred ephemeral replies and serialized schedule message updates.

Bump version to 2.5.0 and update Discord docs.

Refs #29

.env.example

@@ -15,3 +15,10 @@ 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: 1.12.0
+  VERSION: 2.5.0
 
 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

@@ -20,14 +20,62 @@ jobs:
       - 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)
+      - name: Build Bot (compile check, includes SAST)
         run: dotnet build src/GmRelay.Bot/GmRelay.Bot.csproj --no-restore
 
-      - name: Build Web (compile check)
+      - 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
+        run: dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --verbosity normal

.hermes/plans/gmrelay-issue-15.md

@@ -1,343 +0,0 @@
-# Issue #15: Session Audit Log Implementation Plan
-
-> **For Hermes:** Use subagent-driven-development skill to implement this plan task-by-task.
-
-**Goal:** Add transparent audit history for every session change, visible to GM in Web Dashboard.
-
-**Architecture:** PostgreSQL audit table + Dapper queries. Automatic logging inside mutating SessionService methods. New Razor page for GM history view.
-
-**Tech Stack:** C# 12, Blazor SSR, Dapper, PostgreSQL, xUnit.
-
-**Branch:** `issue-15-session-audit-log` (includes mobile UI bugfix cherry-pick)
-
-**Version Bump:** `1.10.1` → `1.10.2`
-
----
-
-## Task 1: Database Migration (V013)
-
-**Objective:** Create `session_audit_log` table.
-
-**File:** Create `src/GmRelay.Bot/Migrations/V013__add_session_audit_log.sql`
-
-```sql
-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);
-```
-
-**Step 2:** Verify migration compiles: `psql $DATABASE_URL -f src/GmRelay.Bot/Migrations/V013__add_session_audit_log.sql` (optional, CI will test)
-
-**Step 3:** Commit: `git add src/GmRelay.Bot/Migrations/V013__add_session_audit_log.sql && git commit -m "chore(#15): add session_audit_log migration"`
-
----
-
-## Task 2: Domain Model & Interface Methods
-
-**Objective:** Add `SessionAuditLogEntry` record and two new methods to `ISessionStore`.
-
-**Files:**
-- Modify: `src/GmRelay.Web/Services/ISessionStore.cs`
-- Modify: `src/GmRelay.Web/Services/SessionService.cs`
-
-**Step 1: Add record to ISessionStore.cs** (after PlayerAttendanceStats)
-
-```csharp
-public sealed record SessionAuditLogEntry(
-    Guid Id,
-    Guid SessionId,
-    long ActorTelegramId,
-    string ActorName,
-    string ChangeType,
-    string? OldValue,
-    string? NewValue,
-    DateTime ChangedAt
-);
-```
-
-**Step 2: Add methods to ISessionStore interface**
-
-```csharp
-Task LogSessionChangeAsync(Guid sessionId, long actorTelegramId, string actorName, string changeType, string? oldValue, string? newValue);
-Task<List<SessionAuditLogEntry>> GetSessionHistoryAsync(Guid sessionId);
-```
-
-**Step 3: Implement in SessionService.cs**
-
-```csharp
-public async Task LogSessionChangeAsync(Guid sessionId, long actorTelegramId, string actorName, string changeType, string? oldValue, string? newValue)
-{
-    using var connection = new NpgsqlConnection(connectionString);
-    await connection.ExecuteAsync(
-        "INSERT INTO session_audit_log (session_id, actor_telegram_id, actor_name, change_type, old_value, new_value) VALUES (@sessionId, @actorTelegramId, @actorName, @changeType, @oldValue, @newValue)",
-        new { sessionId, actorTelegramId, actorName, changeType, oldValue, newValue });
-}
-
-public async Task<List<SessionAuditLogEntry>> GetSessionHistoryAsync(Guid sessionId)
-{
-    using var connection = new NpgsqlConnection(connectionString);
-    var entries = await connection.QueryAsync<SessionAuditLogEntry>(
-        "SELECT id, session_id as SessionId, actor_telegram_id as ActorTelegramId, actor_name as ActorName, change_type as ChangeType, old_value as OldValue, new_value as NewValue, changed_at as ChangedAt FROM session_audit_log WHERE session_id = @sessionId ORDER BY changed_at DESC",
-        new { sessionId });
-    return entries.ToList();
-}
-```
-
-**Step 4:** Commit: `git add -A && git commit -m "feat(#15): add SessionAuditLogEntry and audit store methods"`
-
----
-
-## Task 3: Instrument Mutating Methods
-
-**Objective:** Auto-log changes in key methods. Only log when value actually changes.
-
-**File:** Modify `src/GmRelay.Web/Services/SessionService.cs`
-
-**Step 1: Instrument UpdateSessionAsync**
-
-Before executing UPDATE, read current session. After UPDATE, compare and log each changed field:
-
-```csharp
-// After var currentSession = await GetSessionAsync(sessionId);
-// Before the UPDATE SQL:
-
-if (currentSession is not null)
-{
-    if (currentSession.Title != title)
-        await LogSessionChangeAsync(sessionId, /* actor will be passed from caller */ ...);
-}
-```
-
-**Problem:** SessionService doesn't know the actor (GM) telegram ID. Solution: add `long actorTelegramId` parameter to mutating methods, or use a decorator pattern.
-
-**Better approach:** Instrument in `AuthorizedSessionService` which already has `gmId`. That is the authorized wrapper.
-
-**Revised approach:** Add `IAuditLogger` interface and inject it. Or simpler: change `ISessionStore` mutating methods to accept `long actorTelegramId` and `string actorName` as last parameters.
-
-**Simpler approach for this plan:** Since all mutating methods in `ISessionStore` are called through `AuthorizedSessionService`, instrument in `AuthorizedSessionService` methods AFTER the underlying `SessionService` call. BUT we need old values. 
-
-**Final approach:** Change `ISessionStore` methods to include `actorTelegramId` parameter, and inside `SessionService` fetch old values and log.
-
-Let's add `long actorTelegramId` parameter to:
-- `UpdateSessionAsync`
-- `PromoteWaitlistedPlayerAsync`
-- `RemovePlayerFromSessionAsync`
-- `RescheduleBatchAsync`
-
-Wait, this is a bigger change. Let's be more pragmatic: add a new `IAuditService` that can be called from `AuthorizedSessionService` after mutations. `IAuditService` just wraps `ISessionStore.LogSessionChangeAsync`.
-
-Actually, simplest: add `actorTelegramId` and `actorName` parameters to `LogSessionChangeAsync` and call it from `AuthorizedSessionService` after each mutation. For old/new values, read the session before mutation in AuthorizedSessionService.
-
-**Plan:**
-- `AuthorizedSessionService.UpdateSessionForGmAsync`: read session before update, call update, then log differences.
-- Same pattern for other mutating methods.
-
-**Step 1: Read current session in AuthorizedSessionService.UpdateSessionForGmAsync**
-
-```csharp
-public async Task UpdateSessionForGmAsync(Guid sessionId, long gmId, string title, DateTime scheduledAt, string joinLink, int? maxPlayers)
-{
-    var groupId = await EnforceSessionOwnershipAsync(sessionId, gmId);
-    var before = await store.GetSessionAsync(sessionId);  // add this
-    await store.UpdateSessionAsync(sessionId, groupId, title, scheduledAt, joinLink, maxPlayers);
-    if (before is not null)
-    {
-        if (before.Title != title)
-            await store.LogSessionChangeAsync(sessionId, gmId, "ГМ", "Title", before.Title, title);
-        if (before.ScheduledAt != scheduledAt)
-            await store.LogSessionChangeAsync(sessionId, gmId, "ГМ", "Time", before.ScheduledAt.ToString("O"), scheduledAt.ToString("O"));
-        if (before.JoinLink != joinLink)
-            await store.LogSessionChangeAsync(sessionId, gmId, "ГМ", "Link", before.JoinLink, joinLink);
-        if (before.MaxPlayers != maxPlayers)
-            await store.LogSessionChangeAsync(sessionId, gmId, "ГМ", "MaxPlayers", before.MaxPlayers?.ToString(), maxPlayers?.ToString());
-    }
-}
-```
-
-Wait, `EnforceSessionOwnershipAsync` returns `groupId` but we need it. Let me check the current AuthorizedSessionService code... We saw earlier it does `await EnforceSessionOwnershipAsync(sessionId, gmId)` then calls `store.UpdateSessionAsync`.
-
-Actually, looking at the compact output from earlier, `AuthorizedSessionService` has `EnforceSessionOwnershipAsync` as a private helper. Let me verify.
-
-From the compact output of AuthorizedSessionService earlier:
-```
-public async Task UpdateSessionForGmAsync(Guid sessionId, long gmId, string title, DateTime scheduledAt, string joinLink, int? maxPlayers)
-{
-    var groupId = await EnforceSessionOwnershipAsync(sessionId, gmId);
-    await store.UpdateSessionAsync(sessionId, groupId, title, scheduledAt, joinLink, maxPlayers);
-}
-```
-
-So it DOES return groupId. Perfect.
-
-But we need actor name. We can use the GM's display name from `GetGroupManagementForGmAsync` or just hardcode "ГМ" for now. Or we can query the player name. For simplicity, use "ГМ" + telegram ID, or query the player display name.
-
-Actually, let's query the GM name from the group or just use telegram ID as identifier. Since this is audit log, having human-readable name is better. We can pass `actorName` to the log method.
-
-Simpler: In `AuthorizedSessionService`, after `EnforceSessionOwnershipAsync`, we already know the group. We can get the GM name from group or just use a generic "ГМ" label. Actually, the telegram ID is sufficient for audit, and the display name can be resolved later in the UI.
-
-Let's just log `actor_telegram_id` and use "ГМ" as actor_name. Or better, query the player display name if needed.
-
-For this plan, let's keep it simple: log with `gmId` as actor_telegram_id and `"ГМ"` as actor_name. The UI can resolve the name.
-
-**Step 2: Instrument all mutating AuthorizedSessionService methods**
-
-Do this for:
-- `UpdateSessionForGmAsync` (Title, Time, Link, MaxPlayers)
-- `RescheduleBatchForGmAsync` (BatchRescheduled)
-- `PromoteWaitlistedPlayerForGmAsync` (WaitlistPromote)
-- `RemovePlayerFromSessionForGmAsync` (PlayerRemoved)
-- `UpdateBatchDetailsForGmAsync` (Title, Link)
-- `UpdateBatchNotificationModeForGmAsync` (maybe skip, internal)
-- `DeleteSessionHandler` in Bot features (Cancelled) — this is in Bot layer, not Web
-
-For Cancelled status, we need to instrument `CancelSessionHandler` in Bot. But the Bot handlers don't use `ISessionStore` directly... they use `SessionService` or direct SQL. Let me check.
-
-Actually, for this plan, focus on Web layer mutations first. Bot layer can be a follow-up.
-
-**Step 3: Commit:** `git add -A && git commit -m "feat(#15): instrument audit logging in AuthorizedSessionService"`
-
----
-
-## Task 4: Web Page - SessionHistory.razor
-
-**Objective:** GM-visible timeline of session changes.
-
-**Files:**
-- Create: `src/GmRelay.Web/Components/Pages/SessionHistory.razor`
-- Modify: `src/GmRelay.Web/Components/Pages/GroupDetails.razor` (add "История" link)
-- Modify: `src/GmRelay.Web/Components/Pages/EditSession.razor` (add "История" link)
-
-**Step 1: Create SessionHistory.razor**
-
-Route: `@page "/session/{SessionId:guid}/history"`
-
-Layout: table with columns: Время, Актор, Тип изменения, Было, Стало.
-
-Colors: use existing CSS variables.
-
-**Step 2: Add navigation links**
-
-In GroupDetails.razor sessions table: add 📜 История column/link.
-In EditSession.razor: add button "📜 История изменений" linking to `/session/{SessionId}/history`.
-
-**Step 3: Commit:** `git add -A && git commit -m "feat(#15): add SessionHistory.razor page with audit timeline"`
-
----
-
-## Task 5: FakeSessionStore + TDD Tests
-
-**Objective:** Test audit logging. RED-GREEN-REFACTOR.
-
-**Files:**
-- Modify: `tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs`
-
-**Step 1: RED — Write failing test**
-
-```csharp
-[Fact]
-public async Task UpdateSessionForGmAsync_LogsAudit_WhenTitleChanges()
-{
-    var gmId = 1001L;
-    var groupId = Guid.NewGuid();
-    var sessionId = Guid.NewGuid();
-    var store = new FakeSessionStore(
-        groups: [new(groupId, 42, "Alpha", gmId)],
-        sessions: [new(sessionId, groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42, 4, 1, 0)]);
-    var service = new AuthorizedSessionService(store);
-
-    await service.UpdateSessionForGmAsync(sessionId, gmId, "Updated Title", DateTime.UtcNow.AddDays(1), "https://example.test/b", 5);
-
-    Assert.Single(store.LogEntries);
-    Assert.Equal("Title", store.LogEntries[0].ChangeType);
-    Assert.Equal("Session A", store.LogEntries[0].OldValue);
-    Assert.Equal("Updated Title", store.LogEntries[0].NewValue);
-}
-```
-
-Run: `dotnet test tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs --filter "FullyQualifiedName~LogsAudit" -v n`
-Expected: FAIL (FakeSessionStore doesn't have LogSessionChangeAsync / LogEntries)
-
-**Step 2: GREEN — Add to FakeSessionStore**
-
-Add `List<SessionAuditLogEntry> LogEntries` and implement `LogSessionChangeAsync` / `GetSessionHistoryAsync`.
-
-**Step 3: Refactor — Add more tests**
-
-- No audit when values unchanged
-- Audit for time change
-- Audit for link change
-- Audit for max players change
-- GetSessionHistoryAsync returns entries ordered by time desc
-
-**Step 4: Full suite**
-Run: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj`
-Expected: all pass
-
-**Step 5: Commit:** `git add -A && git commit -m "test(#15): add audit logging TDD tests"`
-
----
-
-## Task 6: Bump Version & Docs
-
-**Objective:** Update version and documentation.
-
-**Files:**
-- Modify: `Directory.Build.props`
-- Modify: `compose.yaml`
-- Modify: `README.md`
-- Modify: Wiki «Руководство ГМа»
-
-**Step 1: Bump version to 1.10.2**
-
-**Step 2: Update README** — add "📜 История изменений сессии" bullet in Web Dashboard section.
-
-**Step 3: Update wiki** — add subsection «Журнал действий» with description of how to access `/session/{id}/history`, what change types are tracked, and how to read the timeline.
-
-**Step 4: Commit:** `git add -A && git commit -m "docs(#15): bump version to 1.10.2 and add audit log docs"`
-
----
-
-## Task 7: Push & PR
-
-**Step 1:** `git push origin issue-15-session-audit-log`
-
-**Step 2:** Create PR via `mcp_gitea_pull_request_write`
-
-**Step 3:** Wait CI (`mcp_gitea_actions_run_read`)
-
-**Step 4:** Merge PR
-
-**Step 5:** Create tag `v1.10.2` and release
-
----
-
-## Verification Checklist
-
-- [ ] Migration V013 applied successfully
-- [ ] `SessionAuditLogEntry` record defined in `ISessionStore.cs`
-- [ ] `LogSessionChangeAsync` and `GetSessionHistoryAsync` implemented in `SessionService.cs`
-- [ ] `AuthorizedSessionService` logs on value changes only
-- [ ] `SessionHistory.razor` renders timeline for GM
-- [ ] Links from GroupDetails and EditSession pages
-- [ ] `FakeSessionStore` implements audit methods
-- [ ] TDD tests: RED → GREEN → all pass
-- [ ] Full `dotnet test` suite: all pass
-- [ ] Version bumped to 1.10.2
-- [ ] README and wiki updated
-- [ ] CI run success
-- [ ] PR merged to main
-- [ ] Tag `v1.10.2` created
-- [ ] Release published

.hermes/plans/gmrelay-issue-19.md

@@ -1,480 +0,0 @@
-# Issue #19: выровнять /newsession с batch-сценарием лендинга — Implementation Plan
-
-> **For Hermes:** Use subagent-driven-development skill to implement this plan task-by-task.
-
-**Goal:** Убедиться, что Telegram UX `/newsession` полностью соответствует batch-сценарию лендинга: мастер одной командой создаёт несколько дат, указывает лимит мест и ссылку, получает единую карточку с действиями. Обеспечить покрытие acceptance criteria регрессионными тестами и устранить найденные расхождения.
-
-**Architecture:** Сценарий уже реализован в `CreateSessionHandler` + `NewSessionCommandParser` + `SessionBatchRenderer`. Основная задача — добавить недостающие тесты на «точный» landing-сценарий (несколько явных дат, не recurring), проверить отсутствие частичных сессий при любых ошибках, и убедиться, что карточка содержит все обещанные элементы.
-
-**Tech Stack:** .NET 10, xUnit, Dapper, Npgsql, Telegram.Bot, Native AOT.
-
----
-
-## Контекст кодовой базы
-
-- `src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs` — создание batch, транзакция БД, отправка карточки.
-- `src/GmRelay.Bot/Features/Sessions/CreateSession/NewSessionCommandParser.cs` — парсинг команды: несколько `Время:`, `Мест:`, `Ссылка:`, `Картинка:`, recurring (`Игр:` + `Интервал:`).
-- `src/GmRelay.Shared/Rendering/SessionBatchRenderer.cs` — рендеринг HTML-карточки с кнопками.
-- `src/GmRelay.Shared/Rendering/BatchMessageEditor.cs` — редактирование batch-сообщения (text/photo).
-- `src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs` — роутинг команд, текст `/help`.
-- `tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/NewSessionCommandParserTests.cs` — тесты парсера.
-- `tests/GmRelay.Bot.Tests/Features/Landing/TelegramLandingPromisesSmokeTests.cs` — smoke-тест всего landing-флоу через `FakeTelegramMessenger`.
-- `tests/GmRelay.Bot.Tests/Rendering/SessionBatchRendererTests.cs` — тесты рендерера.
-
----
-
-### Task 1: RED — тест landing-парсинга с несколькими явными датами
-
-**Objective:** Проверить, что парсер корректно обрабатывает точный формат из лендинга: 2+ явных даты, лимит мест, ссылка, без recurring.
-
-**Files:**
-- Modify: `tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/NewSessionCommandParserTests.cs`
-
-**Step 1: Write failing test**
-
-```csharp
-[Fact]
-public void Parse_ShouldHandleLandingBatchWithMultipleExplicitDates()
-{
-    var nowUtc = new DateTimeOffset(2026, 4, 23, 12, 0, 0, TimeSpan.Zero);
-    var text = """
-        /newsession
-        Название: Landing Batch Game
-        Время: 15.05.2026 19:30
-        Время: 22.05.2026 19:30
-        Мест: 4
-        Ссылка: https://example.test/landing
-        """;
-
-    var result = NewSessionCommandParser.Parse(text, nowUtc);
-
-    Assert.True(result.IsValid);
-    Assert.Equal("Landing Batch Game", result.Title);
-    Assert.Equal("https://example.test/landing", result.Link);
-    Assert.Equal(4, result.MaxPlayers);
-    Assert.Equal(2, result.ScheduledTimes.Count);
-    Assert.Equal(new DateTimeOffset(2026, 5, 15, 16, 30, 0, TimeSpan.Zero), result.ScheduledTimes[0]);
-    Assert.Equal(new DateTimeOffset(2026, 5, 22, 16, 30, 0, TimeSpan.Zero), result.ScheduledTimes[1]);
-    Assert.Empty(result.PastTimeInputs);
-    Assert.Empty(result.InvalidTimeInputs);
-    Assert.Empty(result.InvalidSeatLimitInputs);
-    Assert.Empty(result.InvalidRecurringInputs);
-}
-```
-
-**Step 2: Run test to verify failure**
-
-Run: `dotnet test tests/GmRelay.Bot.Tests/ --filter "FullyQualifiedName~Parse_ShouldHandleLandingBatchWithMultipleExplicitDates" -v n`
-
-Expected: PASS (функциональность уже реализована, но теста не было). Если FAIL — исправить парсер перед продолжением.
-
-**Step 3: Commit**
-
-```bash
-git add tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/NewSessionCommandParserTests.cs
-git commit -m "test(#19): landing batch parser test with multiple explicit dates"
-```
-
----
-
-### Task 2: RED — тест рендеринга landing-карточки
-
-**Objective:** Проверить, что `SessionBatchRenderer` для landing-сценария выводит название, все даты, лимит, заполненность и кнопки записи/выхода.
-
-**Files:**
-- Modify: `tests/GmRelay.Bot.Tests/Rendering/SessionBatchRendererTests.cs`
-
-**Step 1: Write failing test**
-
-```csharp
-[Fact]
-public void Render_ShouldProduceLandingBatchCardWithAllRequiredElements()
-{
-    var sessionId1 = Guid.NewGuid();
-    var sessionId2 = Guid.NewGuid();
-    var sessions = new[]
-    {
-        new SessionBatchDto(sessionId1, new DateTime(2026, 5, 15, 16, 30, 0, DateTimeKind.Utc), SessionStatus.Planned, 4),
-        new SessionBatchDto(sessionId2, new DateTime(2026, 5, 22, 16, 30, 0, DateTimeKind.Utc), SessionStatus.Planned, 4)
-    };
-    var participants = new[]
-    {
-        new ParticipantBatchDto(sessionId1, "Alice", "alice", ParticipantRegistrationStatus.Active),
-        new ParticipantBatchDto(sessionId1, "Bob", null, ParticipantRegistrationStatus.Active),
-        new ParticipantBatchDto(sessionId2, "Charlie", "charlie", ParticipantRegistrationStatus.Waitlisted)
-    };
-
-    var result = SessionBatchRenderer.Render("Landing Batch Game", sessions, participants);
-    var text = result.Text;
-    var buttons = result.Markup.InlineKeyboard.SelectMany(row => row).ToList();
-
-    Assert.Contains("Landing Batch Game", text);
-    Assert.Contains("15 мая 2026, 19:30", text);
-    Assert.Contains("22 мая 2026, 19:30", text);
-    Assert.Contains("Места: 2/4", text);
-    Assert.Contains("Места: 0/4", text);
-    Assert.Contains("@alice", text);
-    Assert.Contains("Bob", text);
-    Assert.Contains("Лист ожидания (1)", text);
-    Assert.Contains("@charlie", text);
-
-    Assert.Equal(4, buttons.Count);
-    Assert.Contains($"join_session:{sessionId1}", buttons.Select(b => b.CallbackData));
-    Assert.Contains($"leave_session:{sessionId1}", buttons.Select(b => b.CallbackData));
-    Assert.Contains($"join_session:{sessionId2}", buttons.Select(b => b.CallbackData));
-    Assert.Contains($"leave_session:{sessionId2}", buttons.Select(b => b.CallbackData));
-}
-```
-
-**Step 2: Run test to verify failure**
-
-Run: `dotnet test tests/GmRelay.Bot.Tests/ --filter "FullyQualifiedName~Render_ShouldProduceLandingBatchCardWithAllRequiredElements" -v n`
-
-Expected: PASS (рендерер уже реализован, тест отсутствовал).
-
-**Step 3: Commit**
-
-```bash
-git add tests/GmRelay.Bot.Tests/Rendering/SessionBatchRendererTests.cs
-git commit -m "test(#19): landing batch renderer card elements test"
-```
-
----
-
-### Task 3: RED — тест «ошибки ввода не создают частичных сессий»
-
-**Objective:** Убедиться, что при невалидном вводе `CreateSessionHandler` не создаёт ни одной записи в БД и не публикует карточку.
-
-**Files:**
-- Create: `tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/CreateSessionHandlerTests.cs`
-- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs` (если найдена уязвимость)
-
-**Step 1: Write failing test**
-
-```csharp
-using GmRelay.Bot.Features.Sessions.CreateSession;
-using Npgsql;
-using Telegram.Bot;
-using Microsoft.Extensions.Logging.Abstractions;
-
-namespace GmRelay.Bot.Tests.Features.Sessions.CreateSession;
-
-public sealed class CreateSessionHandlerTests
-{
-    // Примечание: полноценный интеграционный тест с реальной БД требует TestContainer.
-    // Для Native AOT проекта используем подход с in-memory фейком через рефакторинг хендлера.
-    // Ниже — тест-спецификация, которую реализуем через FakeDataSource или рефакторинг.
-}
-```
-
-Поскольку `CreateSessionHandler` напрямую зависит от `NpgsqlDataSource` и `ITelegramBotClient`, для unit-тестирования нужно либо:
-а) использовать интеграционный тест с PostgreSQL (TestContainers), либо
-б) рефакторить хендлер, выделив `ISessionRepository`.
-
-**Рекомендуемый подход (YAGNI):** добавить интеграционный тест в smoke-стиле через `FakeTelegramMessenger`, дополнив `TelegramLandingSmokeScenario` сценарием «invalid command does not publish anything».
-
-**Step 1 (реализация):** Дописать тест в `TelegramLandingPromisesSmokeTests.cs`:
-
-```csharp
-[Fact]
-public void Smoke_InvalidNewSession_ShouldNotPublishAnySessions()
-{
-    var nowUtc = new DateTimeOffset(2026, 5, 1, 12, 0, 0, TimeSpan.Zero);
-    var invalidText = """
-        /newsession
-        Название: Bad Game
-        Время: 01.01.2020 19:30
-        """; // нет ссылки
-
-    var parseResult = NewSessionCommandParser.Parse(invalidText, nowUtc);
-
-    Assert.False(parseResult.IsValid);
-    Assert.Empty(parseResult.ScheduledTimes);
-    // Убеждаемся, что smoke-сценарий не может быть опубликован
-    Assert.Throws<InvalidOperationException>(() =>
-        TelegramLandingSmokeScenario.Publish(parseResult, SessionNotificationMode.GroupAndDirect));
-}
-```
-
-В `TelegramLandingSmokeScenario.Publish` добавить guard:
-```csharp
-if (!parseResult.IsValid)
-    throw new InvalidOperationException("Cannot publish invalid parse result");
-```
-
-**Step 2: Run test to verify failure**
-
-Run: `dotnet test tests/GmRelay.Bot.Tests/ --filter "FullyQualifiedName~Smoke_InvalidNewSession_ShouldNotPublishAnySessions" -v n`
-
-Expected: FAIL — guard ещё не добавлен.
-
-**Step 3: Write minimal implementation**
-
-Добавить guard в `TelegramLandingSmokeScenario.Publish`:
-```csharp
-if (!parseResult.IsValid)
-    throw new InvalidOperationException("Cannot publish invalid parse result");
-```
-
-**Step 4: Run test to verify pass**
-
-Expected: PASS.
-
-**Step 5: Commit**
-
-```bash
-git add tests/GmRelay.Bot.Tests/Features/Landing/TelegramLandingPromisesSmokeTests.cs
-git add src/GmRelay.Bot/... # если были изменения
-# (файл CreateSessionHandler.cs не трогаем — валидация происходит ДО транзакции)
-git commit -m "test(#19): ensure invalid parse does not publish partial sessions"
-```
-
----
-
-### Task 4: RED — тест atomicity при сбое отправки batch-сообщения
-
-**Objective:** В `CreateSessionHandler` `batch_message_id` обновляется ПОСЛЕ `transaction.Commit()`. Если отправка сообщения в Telegram падает, сессии созданы, но `batch_message_id` не записан — игроки не увидят карточку. Нужно либо доказать, что это обработано, либо исправить.
-
-**Files:**
-- Modify: `src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs`
-
-**Step 1: Анализ кода**
-
-Текущий порядок в `CreateSessionHandler`:
-1. Валидация (до транзакции) ✓
-2. `BEGIN TRANSACTION`
-3. INSERT players, groups, sessions
-4. `COMMIT`
-5. `SessionBatchRenderer.Render`
-6. `botClient.SendMessage/SendPhoto`
-7. `UPDATE sessions SET batch_message_id = ...` (вне транзакции!)
-
-Если шаг 6 падает — сессии «висят» без published message. Это частичное создание.
-
-**Step 2: Write minimal fix**
-
-Обернуть отправку сообщения и обновление `batch_message_id` в retry-loop с fallback. Если после N попыток не удалось — отправить GM уведомление об ошибке и оставить сессии (не удалять, чтобы не терять данные), но сделать так, чтобы `batch_message_id` обновлялся только при успешной отправке.
-
-```csharp
-// Внутри CreateSessionHandler, после Commit:
-Message? batchMessage = null;
-var sendAttempts = 0;
-const int maxAttempts = 3;
-Exception? lastSendException = null;
-
-while (batchMessage is null && sendAttempts < maxAttempts)
-{
-    sendAttempts++;
-    try
-    {
-        batchMessage = await SendBatchMessageAsync(...); // extracted method
-    }
-    catch (Exception ex)
-    {
-        lastSendException = ex;
-        logger.LogWarning(ex, "Attempt {Attempt} failed to send batch message for {BatchId}", sendAttempts, batchId);
-        if (sendAttempts < maxAttempts)
-            await Task.Delay(TimeSpan.FromSeconds(1), cancellationToken);
-    }
-}
-
-if (batchMessage is not null)
-{
-    await connection.ExecuteAsync(
-        "UPDATE sessions SET batch_message_id = @MsgId WHERE batch_id = @BatchId",
-        new { MsgId = batchMessage.MessageId, BatchId = batchId });
-}
-else
-{
-    logger.LogError(lastSendException, "Failed to send batch message for {BatchId} after {MaxAttempts} attempts", batchId, maxAttempts);
-    await botClient.SendMessage(
-        chatId,
-        $"⚠️ Сессии созданы, но не удалось опубликовать карточку. Пожалуйста, используйте /listsessions.\n\nОшибка: {lastSendException?.Message}",
-        cancellationToken: cancellationToken);
-}
-```
-
-**Step 3: Extract helper**
-
-Выделить метод `SendBatchMessageAsync` из текущего inline-кода отправки (строки 117–176 в текущем файле), чтобы логика была читаемой и тестируемой.
-
-**Step 4: Run tests**
-
-Run: `dotnet test tests/GmRelay.Bot.Tests/ -v n`
-
-Expected: все существующие тесты PASS, новая логика не ломает smoke-тест (т.к. smoke-тест не использует реальный `CreateSessionHandler`).
-
-**Step 5: Commit**
-
-```bash
-git add src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs
-git commit -m "fix(#19): retry batch message send and prevent orphaned sessions without batch_message_id"
-```
-
----
-
-### Task 5: RED — smoke-тест полного landing-сценария с явными датами
-
-**Objective:** Дополнить `TelegramLandingPromisesSmokeTests` полным сквозным сценарием: парсинг → публикация → запись → выход → проверка карточки.
-
-**Files:**
-- Modify: `tests/GmRelay.Bot.Tests/Features/Landing/TelegramLandingPromisesSmokeTests.cs`
-
-**Step 1: Write failing test**
-
-```csharp
-[Fact]
-public void Smoke_LandingExplicitDatesBatch_ShouldSupportFullLifecycle()
-{
-    var nowUtc = new DateTimeOffset(2026, 5, 1, 12, 0, 0, TimeSpan.Zero);
-    var text = """
-        /newsession
-        Название: Landing Explicit Batch
-        Время: 15.05.2026 19:30
-        Время: 22.05.2026 19:30
-        Мест: 3
-        Ссылка: https://example.test/explicit
-        """;
-
-    var parseResult = NewSessionCommandParser.Parse(text, nowUtc);
-    Assert.True(parseResult.IsValid);
-    Assert.Equal(2, parseResult.ScheduledTimes.Count);
-    Assert.Equal(3, parseResult.MaxPlayers);
-
-    var scenario = TelegramLandingSmokeScenario.Publish(parseResult, SessionNotificationMode.GroupAndDirect);
-    Assert.Contains("Landing Explicit Batch", scenario.LastMessage.Text);
-    Assert.Contains("15 мая 2026, 19:30", scenario.LastMessage.Text);
-    Assert.Contains("22 мая 2026, 19:30", scenario.LastMessage.Text);
-    Assert.Contains("Места: 0/3", scenario.LastMessage.Text);
-
-    var callbacks = CallbackData(scenario.LastMessage.Markup);
-    Assert.Equal(4, callbacks.Count); // join+leave для каждой из 2 сессий
-
-    var firstSessionId = scenario.Sessions[0].Id;
-    var alice = scenario.Join(firstSessionId, 1001, "Alice", "alice");
-    var bob = scenario.Join(firstSessionId, 1002, "Bob", "bob");
-    var carol = scenario.Join(firstSessionId, 1003, "Carol", "carol");
-
-    Assert.Equal(ParticipantRegistrationStatus.Active, scenario.RegistrationStatus(firstSessionId, alice));
-    Assert.Equal(ParticipantRegistrationStatus.Active, scenario.RegistrationStatus(firstSessionId, bob));
-    Assert.Equal(ParticipantRegistrationStatus.Waitlisted, scenario.RegistrationStatus(firstSessionId, carol));
-    Assert.Contains("Места: 2/3", scenario.LastMessage.Text);
-    Assert.Contains("@alice", scenario.LastMessage.Text);
-    Assert.Contains("@bob", scenario.LastMessage.Text);
-    Assert.Contains("@carol", scenario.LastMessage.Text);
-
-    scenario.Leave(firstSessionId, alice);
-    Assert.False(scenario.HasParticipant(firstSessionId, alice));
-    Assert.Equal(ParticipantRegistrationStatus.Active, scenario.RegistrationStatus(firstSessionId, carol));
-    Assert.DoesNotContain("@alice", scenario.LastMessage.Text);
-    Assert.Contains("@carol", scenario.LastMessage.Text);
-}
-```
-
-**Step 2: Run test to verify failure**
-
-Run: `dotnet test tests/GmRelay.Bot.Tests/ --filter "FullyQualifiedName~Smoke_LandingExplicitDatesBatch_ShouldSupportFullLifecycle" -v n`
-
-Expected: PASS (функциональность уже существует, тест добавляет регрессионное покрытие).
-
-**Step 3: Commit**
-
-```bash
-git add tests/GmRelay.Bot.Tests/Features/Landing/TelegramLandingPromisesSmokeTests.cs
-git commit -m "test(#19): full lifecycle smoke test for explicit-dates landing batch"
-```
-
----
-
-### Task 6: Проверка и обновление `/help` текста
-
-**Objective:** Убедиться, что текст `/help` точно отражает landing-формат и упоминает batch-сценарий.
-
-**Files:**
-- Modify: `src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs`
-
-**Step 1: Read current `/help` text**
-
-Текущий `/help` уже содержит:
-```
-/newsession
-Название: My Game
-Время: 15.05.2026 19:30
-Время: 22.05.2026 19:30
-Мест: 4
-Ссылка: https://link
-Картинка: https://cover
-
-Для регулярного расписания можно указать одну дату:
-Игр: 4
-Интервал: 7
-```
-
-**Step 2: Verify alignment**
-
-- Формат совпадает с лендингом ✓
-- Упоминается `Мест:` ✓
-- Упоминается несколько `Время:` ✓
-- Упоминается `Ссылка:` ✓
-
-Никаких изменений не требуется. Если тестировщик считает, что help недостаточно явно описывает batch-сценарий — добавить заголовок:
-```
-<b>Создать набор сессий (batch):</b>
-```
-
-**Step 3: Commit (если изменения были)**
-
-```bash
-git add src/GmRelay.Bot/Infrastructure/Telegram/UpdateRouter.cs
-git commit -m "docs(#19): clarify batch scenario in /help text"
-```
-
----
-
-### Task 7: Финальный прогон и cleanup
-
-**Objective:** Убедиться, что все тесты проходят, нет warnings, и план соответствует acceptance criteria.
-
-**Files:**
-- Все изменённые файлы
-
-**Step 1: Run full test suite**
-
-```bash
-dotnet test tests/GmRelay.Bot.Tests/ -v n
-```
-
-Expected: все тесты PASS.
-
-**Step 2: Verify checklist**
-
-- [ ] `Parse_ShouldHandleLandingBatchWithMultipleExplicitDates` — PASS
-- [ ] `Render_ShouldProduceLandingBatchCardWithAllRequiredElements` — PASS
-- [ ] `Smoke_InvalidNewSession_ShouldNotPublishAnySessions` — PASS
-- [ ] `Smoke_LandingExplicitDatesBatch_ShouldSupportFullLifecycle` — PASS
-- [ ] Все существующие тесты — PASS
-- [ ] `CreateSessionHandler` обрабатывает сбой отправки batch-сообщения (retry + fallback)
-- [ ] `/help` текст соответствует landing-формату
-- [ ] Никаких новых warnings при сборке
-
-**Step 3: Commit финальный**
-
-```bash
-git add -A
-git commit -m "feat(#19): align /newsession with landing batch scenario — tests + atomicity fix"
-```
-
----
-
-## Acceptance Criteria Verification
-
-| Критерий | Статус | Покрытие |
-|---|---|---|
-| Мастер может создать batch из нескольких дат | ✅ Реализовано | Task 1, Task 5 |
-| Карточка содержит название, даты, лимит, заполненность, действия | ✅ Реализовано | Task 2, Task 5 |
-| Ошибки ввода не создают частичных сессий | ✅ Реализовано (валидация до транзакции) | Task 3 |
-| Сбой публикации карточки не оставляет «висячие» сессии без `batch_message_id` | 🔄 Фиксится | Task 4 |
-
-## Execution Handoff
-
-Plan complete and saved to `.hermes/plans/gmrelay-issue-19.md`. Ready to execute using subagent-driven-development — dispatch a fresh subagent per task with two-stage review (spec compliance then code quality). Shall I proceed?

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>1.12.0</Version>
+    <Version>2.5.0</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.

README.md

@@ -4,7 +4,7 @@
 
 Проект разработан с упором на производительность, архитектуру Vertical Slice, Native AOT (для бота) и удобство развертывания с использованием .NET Aspire.
 
-**Текущая версия:** `v1.10.2`.
+**Текущая версия:** `v2.5.0`.
 
 ---
 
@@ -16,7 +16,7 @@
 - **⚡ 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.
+- **📁 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.
@@ -24,6 +24,11 @@
 - **⬆️ 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.
 
+### 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.
+- **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**: 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.
@@ -47,7 +52,7 @@
 |---|---|
 | Язык | C# 14 (.NET 10) |
 | Архитектура | Vertical Slice + общая библиотека `GmRelay.Shared` |
-| Бот | Telegram.Bot, **Native AOT** |
+| Боты | Telegram.Bot (**Native AOT**), NetCord Gateway (Discord worker) |
 | Веб | Blazor Server |
 | Оркестрация | .NET Aspire (`GmRelay.AppHost`) |
 | БД | PostgreSQL |
@@ -74,6 +79,9 @@ cp .env.example .env
 # Токен от @BotFather (используется ботом и как секретный ключ веб-авторизации)
 TELEGRAM_BOT_TOKEN=ваш_токен_здесь
 
+# 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
 
@@ -98,12 +106,53 @@ docker compose up -d
 - 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
+```
 
 ---
 
@@ -113,11 +162,10 @@ docker compose up -d
 ├── src/
 │   ├── GmRelay.AppHost/         # .NET Aspire orchestrator
 │   ├── GmRelay.Bot/             # Telegram-бот (Native AOT)
-│   ├── GmRelay.Migrator/        # DbUp-миграции
+│   ├── GmRelay.DiscordBot/      # Discord Gateway worker на NetCord
 │   ├── GmRelay.ServiceDefaults/  # Aspire service defaults
 │   ├── GmRelay.Shared/          # Общие доменные модели
-│   ├── GmRelay.Web/             # Blazor Server dashboard
-│   └── GmRelay.Worker/          # Background workers
+│   └── GmRelay.Web/             # Blazor Server dashboard
 ├── tests/
 │   └── GmRelay.Bot.Tests/       # xUnit + NSubstitute
 ├── compose.yaml                  # Docker Compose (AMD64 + ARM64)

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 +${BACKUP_RETENTION_DAYS} -delete
+        EOF
+        chmod +x /usr/local/bin/backup.sh
+        echo "0 3 * * * /usr/local/bin/backup.sh" | crontab -
+        crond -f
+
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:1.12.0
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:2.5.0
     restart: always
     depends_on:
       db:
@@ -28,9 +60,26 @@ services:
       - "Telegram__MiniAppUrl=${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:2.5.0
+    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
 
   web:
-    image: git.codeanddice.ru/toutsu/gmrelay-web:1.12.0
+    image: git.codeanddice.ru/toutsu/gmrelay-web:2.5.0
     restart: always
     depends_on:
       db:
@@ -46,12 +95,19 @@ 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/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 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 messages and ephemeral interaction replies")
+    Rel(gmrelay, postgres, "SQL via Npgsql and Dapper")
 ```
 
 ## Level 2: Container
@@ -30,49 +35,76 @@ 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, Join/Leave 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, and platform-neutral join/leave 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 and join/leave 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(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 buttons to neutral commands")
+        Component(discordMessenger, "DiscordPlatformMessenger", "IPlatformMessenger", "Edits Discord schedule messages and stores interaction replies")
+    }
 
-    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", "Edits Telegram schedule messages and answers callback queries")
+    }
+
+    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, discord, "Deferred ephemeral reply, then modify response")
+    Rel(updateRouter, join, "JoinSessionCommand")
+    Rel(updateRouter, leave, "LeaveSessionCommand")
+    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(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(discordMessenger, discord, "ModifyMessage + ephemeral text")
+    Rel(telegramMessenger, telegram, "EditMessage + AnswerCallbackQuery")
 ```

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?**

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": {
+    "net10.0": {
+      "Aspire.Dashboard.Sdk.win-x64": {
+        "type": "Direct",
+        "requested": "[13.2.1, )",
+        "resolved": "13.2.1",
+        "contentHash": "KLB9rXwY8kg2taWwxsJFoK0cAuupSZurcv1zTyYMqLyNuwvYYjs65Yz3g/cgh22QlUfOT3tOh+Jzk5MdJhy5+w=="
+      },
+      "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",
+          "Microsoft.Extensions.Options": "10.0.5",
+          "Microsoft.Extensions.Primitives": "10.0.5",
+          "ModelContextProtocol": "1.0.0",
+          "Newtonsoft.Json": "13.0.4",
+          "Polly.Core": "8.6.5",
+          "Semver": "3.0.0",
+          "StreamJsonRpc": "2.22.23",
+          "System.IO.Hashing": "10.0.3"
+        }
+      },
+      "Aspire.Hosting.Orchestration.win-x64": {
+        "type": "Direct",
+        "requested": "[13.2.1, )",
+        "resolved": "13.2.1",
+        "contentHash": "39lRUH4WuCsBaYB7fZH1/r81SSJIXrA8WphBlAdP1QT95+1sKQHzXJuXU4nzKpBLv4oZmjcWzvA+FDMGZbWmkw=="
+      },
+      "Aspire.Hosting.PostgreSQL": {
+        "type": "Direct",
+        "requested": "[13.2.1, )",
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+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Diagnostics.Abstractions": "10.0.5",
+          "Microsoft.Extensions.FileProviders.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Http": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
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+        "dependencies": {
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+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Diagnostics": "10.0.5",
+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5"
+        }
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+      "Microsoft.Extensions.Logging": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
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+        "dependencies": {
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+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5"
+        }
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+      "Microsoft.Extensions.Logging.Abstractions": {
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+        "dependencies": {
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+        }
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+      "Microsoft.Extensions.Logging.Configuration": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
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+          "Microsoft.Extensions.Configuration": "10.0.5",
+          "Microsoft.Extensions.Configuration.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Configuration.Binder": "10.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5",
+          "Microsoft.Extensions.Options.ConfigurationExtensions": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Logging.Console": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
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+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging.Configuration": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Logging.Debug": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
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+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Logging.EventLog": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
+        "contentHash": "0ezhWYJS4/6KrqQel9JL+Tr4n+4EX2TF5EYiaysBWNNEM2c3Gtj1moD39esfgk8OHblSX+UFjtZ3z0c4i9tRvw==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5",
+          "System.Diagnostics.EventLog": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Logging.EventSource": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
+        "contentHash": "vN+aq1hBFXyYvY5Ow9WyeR66drKQxRZmas4lAjh6QWfryPkjTn1uLtX5AFIxyDaZj78v5TG2sELUyvrXpAPQQw==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5",
+          "Microsoft.Extensions.Primitives": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Options": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
+        "contentHash": "MDaQMdUplw0AIRhWWmbLA7yQEXaLIHb+9CTroTiNS8OlI0LMXS4LCxtopqauiqGCWlRgJ+xyraVD8t6veRAFbw==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Primitives": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Options.ConfigurationExtensions": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
+        "contentHash": "BB9uUW3+6Rxu1R97OB1H/13lUF8P2+H1+eDhpZlK30kDh/6E4EKHBUqTp+ilXQmZLzsRErxON8aBSR6WpUKJdg==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Configuration.Binder": "10.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5",
+          "Microsoft.Extensions.Primitives": "10.0.5"
+        }
+      },
+      "Microsoft.Extensions.Primitives": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
+        "contentHash": "/HUHJ0tw/LQvD0DZrz50eQy/3z7PfX7WWEaXnjKTV9/TNdcgFlNTZGo49QhS7PTmhDqMyHRMqAXSBxLh0vso4g=="
+      },
+      "Microsoft.NET.StringTools": {
+        "type": "Transitive",
+        "resolved": "17.6.3",
+        "contentHash": "N0ZIanl1QCgvUumEL1laasU0a7sOE5ZwLZVTn0pAePnfhq8P7SvTjF8Axq+CnavuQkmdQpGNXQ1efZtu5kDFbA=="
+      },
+      "Microsoft.VisualStudio.Threading.Only": {
+        "type": "Transitive",
+        "resolved": "17.13.61",
+        "contentHash": "vl5a2URJYCO5m+aZZtNlAXAMz28e2pUotRuoHD7RnCWOCeoyd8hWp5ZBaLNYq4iEj2oeJx5ZxiSboAjVmB20Qg==",
+        "dependencies": {
+          "Microsoft.VisualStudio.Validation": "17.8.8"
+        }
+      },
+      "Microsoft.VisualStudio.Validation": {
+        "type": "Transitive",
+        "resolved": "17.8.8",
+        "contentHash": "rWXThIpyQd4YIXghNkiv2+VLvzS+MCMKVRDR0GAMlflsdo+YcAN2g2r5U1Ah98OFjQMRexTFtXQQ2LkajxZi3g=="
+      },
+      "ModelContextProtocol": {
+        "type": "Transitive",
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+        "dependencies": {
+          "Microsoft.Extensions.Caching.Abstractions": "10.0.3",
+          "Microsoft.Extensions.Hosting.Abstractions": "10.0.3",
+          "ModelContextProtocol.Core": "1.0.0"
+        }
+      },
+      "ModelContextProtocol.Core": {
+        "type": "Transitive",
+        "resolved": "1.0.0",
+        "contentHash": "QKboiQEq2MJMGeQ029Gy6xqge88abm0Px9lnG7hueOyf+EDCxi5SUATV+Df7GwT+NwWzkEsYG271bUQD+LGhEg==",
+        "dependencies": {
+          "Microsoft.Extensions.AI.Abstractions": "10.3.0",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.3"
+        }
+      },
+      "Nerdbank.Streams": {
+        "type": "Transitive",
+        "resolved": "2.12.87",
+        "contentHash": "oDKOeKZ865I5X8qmU3IXMyrAnssYEiYWTobPGdrqubN3RtTzEHIv+D6fwhdcfrdhPJzHjCkK/ORztR/IsnmA6g==",
+        "dependencies": {
+          "Microsoft.VisualStudio.Threading.Only": "17.13.61",
+          "Microsoft.VisualStudio.Validation": "17.8.8"
+        }
+      },
+      "Newtonsoft.Json": {
+        "type": "Transitive",
+        "resolved": "13.0.4",
+        "contentHash": "pdgNNMai3zv51W5aq268sujXUyx7SNdE2bj1wZcWjAQrKMFZV260lbqYop1d2GM67JI1huLRwxo9ZqnfF/lC6A=="
+      },
+      "Npgsql": {
+        "type": "Transitive",
+        "resolved": "8.0.3",
+        "contentHash": "6WEmzsQJCZAlUG1pThKg/RmeF6V+I0DmBBBE/8YzpRtEzhyZzKcK7ulMANDm5CkxrALBEC8H+5plxHWtIL7xnA==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "8.0.0"
+        }
+      },
+      "Polly.Core": {
+        "type": "Transitive",
+        "resolved": "8.6.5",
+        "contentHash": "t+sUVrIwvo7UmsgHGgOG9F0GDZSRIm47u2ylH17Gvcv1q5hNEwgD5GoBlFyc0kh/pebmPyrAgvGsR/65ZBaXlg=="
+      },
+      "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

@@ -21,7 +21,8 @@ internal sealed record SessionContext(
     DateTime ScheduledAt,
     string Status,
     long GmTelegramId,
-    long TelegramChatId);
+    long TelegramChatId,
+    int? ThreadId);
 
 internal sealed record ParticipantRsvp(
     long TelegramId,
@@ -95,7 +96,8 @@ public sealed class HandleRsvpHandler(
                    s.scheduled_at AS ScheduledAt,
                    s.status AS Status,
                    g.gm_telegram_id AS GmTelegramId,
-                   g.telegram_chat_id AS TelegramChatId
+                   g.telegram_chat_id AS TelegramChatId,
+                   s.thread_id AS ThreadId
             FROM sessions s
             JOIN game_groups g ON g.id = s.group_id
             WHERE s.id = @SessionId
@@ -191,6 +193,7 @@ public sealed class HandleRsvpHandler(
                 {
                     await bot.SendMessage(
                         chatId: session.TelegramChatId,
+                        messageThreadId: session.ThreadId,
                         text: $"🎉 Игра «{session.Title}» подтверждена! Все участники на месте.",
                         cancellationToken: ct);
                 }

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

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

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

@@ -15,6 +15,7 @@ internal sealed record SessionInfo(
     DateTime ScheduledAt,
     Guid GroupId,
     long TelegramChatId,
+    int? ThreadId,
     string NotificationMode);
 
 internal sealed record ParticipantInfo(
@@ -32,7 +33,7 @@ public sealed class SendConfirmationHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
     DirectSessionNotificationSender directSender,
-    ILogger<SendConfirmationHandler> logger)
+    ILogger<SendConfirmationHandler> logger) : ISendConfirmationHandler
 {
     public async Task HandleAsync(Guid sessionId, CancellationToken ct)
     {
@@ -43,6 +44,7 @@ public sealed class SendConfirmationHandler(
             """
             SELECT s.id, s.title, s.scheduled_at AS ScheduledAt, s.group_id AS GroupId,
                    g.telegram_chat_id AS TelegramChatId,
+                   s.thread_id AS ThreadId,
                    s.notification_mode AS NotificationMode
             FROM sessions s
             JOIN game_groups g ON g.id = s.group_id
@@ -99,18 +101,21 @@ public sealed class SendConfirmationHandler(
         // 4. Send to group
         var message = await bot.SendMessage(
             chatId: session.TelegramChatId,
+            messageThreadId: session.ThreadId,
             text: text,
             replyMarkup: keyboard,
             cancellationToken: ct);
 
-        // 5. Update session status and store message ID
+        // 5. Update session status, store message ID, and mark confirmation sent
         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
             {

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/ISendJoinLinkHandler.cs

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

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

@@ -14,6 +14,7 @@ internal sealed record JoinLinkSession(
     string JoinLink,
     DateTime ScheduledAt,
     long TelegramChatId,
+    int? ThreadId,
     string NotificationMode);
 
 internal sealed record ConfirmedPlayer(
@@ -31,7 +32,7 @@ public sealed class SendJoinLinkHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
     DirectSessionNotificationSender directSender,
-    ILogger<SendJoinLinkHandler> logger)
+    ILogger<SendJoinLinkHandler> logger) : ISendJoinLinkHandler
 {
     public async Task HandleAsync(Guid sessionId, CancellationToken ct)
     {
@@ -42,6 +43,7 @@ public sealed class SendJoinLinkHandler(
             """
             SELECT s.id, s.title, s.join_link AS JoinLink, s.scheduled_at AS ScheduledAt,
                    g.telegram_chat_id AS TelegramChatId,
+                   s.thread_id AS ThreadId,
                    s.notification_mode AS NotificationMode
             FROM sessions s
             JOIN game_groups g ON g.id = s.group_id
@@ -94,6 +96,7 @@ public sealed class SendJoinLinkHandler(
         // 4. Send
         var message = await bot.SendMessage(
             chatId: session.TelegramChatId,
+            messageThreadId: session.ThreadId,
             text: text,
             cancellationToken: ct);
 

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

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

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

@@ -15,7 +15,7 @@ internal sealed record OneHourReminderSession(
 public sealed class SendOneHourReminderHandler(
     NpgsqlDataSource dataSource,
     DirectSessionNotificationSender directSender,
-    ILogger<SendOneHourReminderHandler> logger)
+    ILogger<SendOneHourReminderHandler> logger) : ISendOneHourReminderHandler
 {
     public async Task HandleAsync(Guid sessionId, CancellationToken ct)
     {

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

@@ -1,10 +1,9 @@
 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;
@@ -14,6 +13,7 @@ public sealed record CancelSessionCommand(
     long TelegramUserId,
     string CallbackQueryId,
     long ChatId,
+    int? MessageThreadId,
     int MessageId);
 
 // DTOs for AOT compilation
@@ -21,7 +21,7 @@ internal sealed record CancelSessionInfoDto(string Title, Guid BatchId, int? Bat
 
 public sealed class CancelSessionHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     DirectSessionNotificationSender directSender,
     ILogger<CancelSessionHandler> logger)
 {
@@ -29,7 +29,7 @@ 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>(
             """
@@ -51,13 +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;
         }
 
@@ -104,22 +104,24 @@ public sealed class CancelSessionHandler(
 
         // 4. Перерисовываем сообщение
         var view = SessionBatchViewBuilder.Build(session.Title, batchSessions.ToList(), batchParticipants.ToList());
-        var renderResult = TelegramSessionBatchRenderer.Render(view);
 
         try
         {
-            await BatchMessageEditor.EditBatchMessageAsync(
-                bot,
-                chatId: command.ChatId,
-                messageId: session.BatchMessageId ?? command.MessageId,
-                text: renderResult.Text,
-                replyMarkup: renderResult.Markup,
+            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 bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия отменена!", cancellationToken: ct);
-            
+            await AnswerAsync(command.CallbackQueryId, "Сессия отменена!", 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())
@@ -135,7 +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

@@ -77,11 +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);
@@ -94,10 +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);
@@ -107,8 +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 },
@@ -119,7 +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 },
@@ -144,14 +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();
@@ -161,8 +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
@@ -173,6 +193,7 @@ public sealed class CreateSessionHandler(
                         Link = link,
                         ScheduledAt = scheduledAt,
                         ThreadId = messageThreadId,
+                        TopicCreatedByBot = topicCreatedByBot,
                         MaxPlayers = parseResult.MaxPlayers,
                         Status = SessionStatus.Planned
                     },

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

@@ -1,8 +1,8 @@
 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;
@@ -19,7 +19,7 @@ internal sealed record WaitlistedParticipantDto(Guid ParticipantRowId, string Di
 
 public sealed class PromoteWaitlistedPlayerHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     ILogger<PromoteWaitlistedPlayerHandler> logger)
 {
     public async Task HandleAsync(PromoteWaitlistedPlayerCommand command, CancellationToken ct)
@@ -53,14 +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;
             }
 
@@ -89,14 +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;
             }
 
@@ -165,17 +165,15 @@ public sealed class PromoteWaitlistedPlayerHandler(
             transactionCommitted = true;
 
             var view = SessionBatchViewBuilder.Build(session.Title, batchSessions, batchParticipants);
-            var renderResult = TelegramSessionBatchRenderer.Render(view);
-
-            await BatchMessageEditor.EditBatchMessageAsync(
-                bot,
-                chatId: command.ChatId,
-                messageId: session.BatchMessageId ?? command.MessageId,
-                text: renderResult.Text,
-                replyMarkup: renderResult.Markup,
+            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.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)
         {
@@ -188,7 +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

@@ -1,11 +1,11 @@
 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;
-using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Features.Sessions.ExportCalendar;
 
@@ -13,7 +13,7 @@ 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)
@@ -34,10 +34,10 @@ public sealed class ExportCalendarHandler(
 
         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;
         }
 
@@ -63,9 +63,7 @@ public sealed class ExportCalendarHandler(
         sb.AppendLine("END:VCALENDAR");
 
         var bytes = Encoding.UTF8.GetBytes(sb.ToString());
-        using var stream = new MemoryStream(bytes);
 
-        var inputFile = InputFile.FromStream(stream, "schedule.ics");
 
         // Create calendar subscription
         string? subscriptionUrl = null;
@@ -93,20 +91,23 @@ public sealed class ExportCalendarHandler(
             }
         }
 
-        var replyMarkup = subscriptionUrl is not null
-            ? new InlineKeyboardMarkup(new[]
+        var actions = subscriptionUrl is not null
+            ? new[]
             {
-                new[] { InlineKeyboardButton.WithUrl("🔗 Подписаться на календарь", subscriptionUrl) }
-            })
-            : null;
+                new PlatformMessageAction(
+                    "calendar-subscription",
+                    "🔗 Подписаться на календарь",
+                    subscriptionUrl)
+            }
+            : Array.Empty<PlatformMessageAction>();
 
-        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,
-             replyMarkup: replyMarkup,
-             messageThreadId: message.MessageThreadId,
-             cancellationToken: cancellationToken);
+        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
             {
@@ -113,7 +130,7 @@ 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;
         }
 

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

@@ -1,6 +1,7 @@
 using Dapper;
 using GmRelay.Bot.Features.Notifications;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
@@ -14,7 +15,7 @@ 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);
+    Guid BatchId, int? BatchMessageId, long TelegramChatId, int? ThreadId, string NotificationMode);
 
 internal sealed record VoteParticipantDto(
     Guid PlayerId,
@@ -33,6 +34,7 @@ internal sealed record VoteParticipantDto(
 public sealed class HandleRescheduleTimeInputHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     DirectSessionNotificationSender directSender,
     ILogger<HandleRescheduleTimeInputHandler> logger)
 {
@@ -57,6 +59,7 @@ 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
@@ -82,11 +85,10 @@ 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;
         }
 
@@ -161,6 +163,7 @@ 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,
@@ -224,6 +227,8 @@ 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
@@ -238,11 +243,10 @@ 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);
@@ -377,14 +381,12 @@ public sealed class HandleRescheduleTimeInputHandler(
             if (proposal.BatchMessageId.HasValue)
             {
                 var view = SessionBatchViewBuilder.Build(proposal.Title, batchSessions, batchParticipants);
-                var renderResult = TelegramSessionBatchRenderer.Render(view);
 
-                await BatchMessageEditor.EditBatchMessageAsync(
-                    bot,
-                    chatId: proposal.TelegramChatId,
-                    messageId: proposal.BatchMessageId.Value,
-                    text: renderResult.Text,
-                    replyMarkup: renderResult.Markup,
+                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 +1,6 @@
 using Dapper;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using Npgsql;
 using Telegram.Bot;
 
@@ -22,6 +23,7 @@ internal sealed record VoteProposalDto(
 public sealed class HandleRescheduleVoteHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     ILogger<HandleRescheduleVoteHandler> logger)
 {
     public async Task HandleAsync(HandleRescheduleVoteCommand command, CancellationToken ct)
@@ -46,20 +48,13 @@ 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 +73,7 @@ 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 +161,9 @@ 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;
         }
 
@@ -75,8 +76,7 @@ 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;
         }
 
@@ -91,22 +91,28 @@ public sealed class InitiateRescheduleHandler(
         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

@@ -1,6 +1,8 @@
 using Dapper;
 using GmRelay.Bot.Features.Notifications;
+using GmRelay.Bot.Infrastructure.Scheduling;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
@@ -19,12 +21,15 @@ internal sealed record DueRescheduleProposalDto(
     int? BatchMessageId,
     int? VoteMessageId,
     long TelegramChatId,
+    int? ThreadId,
     string NotificationMode);
 
 public sealed class RescheduleVotingDeadlineService(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     DirectSessionNotificationSender directSender,
+    ISystemClock clock,
     ILogger<RescheduleVotingDeadlineService> logger) : BackgroundService
 {
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
@@ -55,10 +60,11 @@ public sealed class RescheduleVotingDeadlineService(
                 FROM reschedule_proposals
                 WHERE status = 'Voting'
                   AND voting_deadline_at IS NOT NULL
-                  AND voting_deadline_at <= now()
+                  AND voting_deadline_at <= @Now
                 ORDER BY voting_deadline_at
                 LIMIT 25
-                """)).ToList();
+                """,
+                new { Now = clock.UtcNow.UtcDateTime })).ToList();
 
             foreach (var proposalId in proposalIds)
             {
@@ -90,6 +96,7 @@ public sealed class RescheduleVotingDeadlineService(
                    s.batch_id AS BatchId,
                    s.batch_message_id AS BatchMessageId,
                    s.notification_mode AS NotificationMode,
+                   s.thread_id AS ThreadId,
                    g.telegram_chat_id AS TelegramChatId
             FROM reschedule_proposals rp
             JOIN sessions s ON s.id = rp.session_id
@@ -97,10 +104,10 @@ public sealed class RescheduleVotingDeadlineService(
             WHERE rp.id = @ProposalId
               AND rp.status = 'Voting'
               AND rp.voting_deadline_at IS NOT NULL
-              AND rp.voting_deadline_at <= now()
+              AND rp.voting_deadline_at <= @Now
             FOR UPDATE
             """,
-            new { ProposalId = proposalId },
+            new { ProposalId = proposalId, Now = clock.UtcNow.UtcDateTime },
             transaction);
 
         if (proposal is null)
@@ -166,6 +173,7 @@ public sealed class RescheduleVotingDeadlineService(
                 SET scheduled_at = @NewTime,
                     status = @Status,
                     confirmation_message_id = NULL,
+                    confirmation_sent_at = NULL,
                     link_message_id = NULL,
                     one_hour_reminder_processed_at = NULL,
                     updated_at = now()
@@ -306,23 +314,20 @@ public sealed class RescheduleVotingDeadlineService(
             if (proposal.BatchMessageId.HasValue)
             {
                 var view = SessionBatchViewBuilder.Build(proposal.Title, batchSessions, batchParticipants);
-                var renderResult = TelegramSessionBatchRenderer.Render(view);
 
-                await BatchMessageEditor.EditBatchMessageAsync(
-                    bot,
-                    chatId: proposal.TelegramChatId,
-                    messageId: proposal.BatchMessageId.Value,
-                    text: renderResult.Text,
-                    replyMarkup: renderResult.Markup,
+                await messenger.UpdateScheduleAsync(
+                    new PlatformScheduleMessage(
+                        TelegramPlatformIds.Group(proposal.TelegramChatId, proposal.ThreadId),
+                        view,
+                        TelegramPlatformIds.Message(proposal.TelegramChatId, proposal.ThreadId, proposal.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(proposal.TelegramChatId, proposal.ThreadId),
+                    $"📣 Расписание обновлено после голосования за перенос сессии «{System.Net.WebUtility.HtmlEncode(proposal.Title)}».",
+                    ct);
             }
         }
         catch (Exception ex)

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/ISessionTriggerStore.cs

@@ -0,0 +1,86 @@
+using Dapper;
+using GmRelay.Shared.Domain;
+using Npgsql;
+
+namespace GmRelay.Bot.Infrastructure.Scheduling;
+
+public interface ISessionTriggerStore
+{
+    Task<IReadOnlyList<Guid>> GetSessionsNeedingConfirmationAsync(DateTimeOffset now, CancellationToken ct);
+    Task<IReadOnlyList<Guid>> GetSessionsNeedingOneHourReminderAsync(DateTimeOffset now, CancellationToken ct);
+    Task<IReadOnlyList<Guid>> GetSessionsNeedingJoinLinkAsync(DateTimeOffset now, CancellationToken ct);
+}
+
+public sealed class DbSessionTriggerStore(NpgsqlDataSource dataSource) : ISessionTriggerStore
+{
+    private static readonly TimeSpan ConfirmationLeadTime = TimeSpan.FromHours(24);
+    private static readonly TimeSpan OneHourReminderLeadTime = TimeSpan.FromHours(1);
+    private static readonly TimeSpan JoinLinkLeadTime = TimeSpan.FromMinutes(5);
+
+    public async Task<IReadOnlyList<Guid>> GetSessionsNeedingConfirmationAsync(DateTimeOffset now, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+        var results = await connection.QueryAsync<Guid>(
+            """
+            SELECT id
+            FROM sessions
+            WHERE status = @Planned
+              AND scheduled_at - @LeadTime <= @Now
+              AND confirmation_sent_at IS NULL
+            """,
+            new
+            {
+                Planned = SessionStatus.Planned,
+                LeadTime = ConfirmationLeadTime,
+                Now = now.UtcDateTime
+            });
+
+        return results.ToList();
+    }
+
+    public async Task<IReadOnlyList<Guid>> GetSessionsNeedingOneHourReminderAsync(DateTimeOffset now, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+        var results = 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,
+                Now = now.UtcDateTime
+            });
+
+        return results.ToList();
+    }
+
+    public async Task<IReadOnlyList<Guid>> GetSessionsNeedingJoinLinkAsync(DateTimeOffset now, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+        var results = 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,
+                Now = now.UtcDateTime
+            });
+
+        return results.ToList();
+    }
+}

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

@@ -0,0 +1,16 @@
+namespace GmRelay.Bot.Infrastructure.Scheduling;
+
+public interface ISystemClock
+{
+    DateTimeOffset UtcNow { get; }
+}
+
+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

@@ -1,31 +1,27 @@
-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:
+/// Three triggers:
 ///   T-24h: send confirmation request with inline keyboard
+///   T-1h:  send one-hour direct reminder
 ///   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,
+    ISessionTriggerStore triggerStore,
+    ISendConfirmationHandler confirmationHandler,
+    ISendOneHourReminderHandler oneHourReminderHandler,
+    ISendJoinLinkHandler joinLinkHandler,
+    ISystemClock clock,
     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)
     {
@@ -33,14 +29,11 @@ public sealed class SessionSchedulerService(
 
         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);
+                await TickAsync(stoppingToken);
             }
             catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
             {
@@ -57,57 +50,30 @@ public sealed class SessionSchedulerService(
     }
 
     /// <summary>
-    /// T-1h trigger: process direct reminders according to the session notification mode.
+    /// Runs a single scheduler tick using the current clock time.
+    /// Public so it can be called from integration tests with a fake clock.
     /// </summary>
-    private async Task ProcessOneHourReminderTriggers(CancellationToken ct)
+    public async Task TickAsync(CancellationToken ct)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        var now = clock.UtcNow;
 
-        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);
-            }
-        }
+        await ProcessConfirmationTriggers(now, ct);
+        await ProcessOneHourReminderTriggers(now, ct);
+        await ProcessJoinLinkTriggers(now, ct);
     }
 
-    /// <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)
+    private async Task ProcessConfirmationTriggers(DateTimeOffset now, 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 });
+        IReadOnlyList<Guid> sessionIds;
+        try
+        {
+            sessionIds = await triggerStore.GetSessionsNeedingConfirmationAsync(now, ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to query confirmation triggers");
+            return;
+        }
 
         foreach (var sessionId in sessionIds)
         {
@@ -123,23 +89,45 @@ public sealed class SessionSchedulerService(
         }
     }
 
-    /// <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)
+    private async Task ProcessOneHourReminderTriggers(DateTimeOffset now, CancellationToken ct)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        IReadOnlyList<Guid> sessionIds;
+        try
+        {
+            sessionIds = await triggerStore.GetSessionsNeedingOneHourReminderAsync(now, ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to query one-hour reminder triggers");
+            return;
+        }
 
-        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 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);
+            }
+        }
+    }
+
+    private async Task ProcessJoinLinkTriggers(DateTimeOffset now, CancellationToken ct)
+    {
+        IReadOnlyList<Guid> sessionIds;
+        try
+        {
+            sessionIds = await triggerStore.GetSessionsNeedingJoinLinkAsync(now, ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to query join-link triggers");
+            return;
+        }
 
         foreach (var sessionId in sessionIds)
         {

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 +1,196 @@
+using System.Globalization;
+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);
+    }
+
+    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 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/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

@@ -1,5 +1,6 @@
 // ... UpdateRouter will have CancelSessionHandler and cancel_session route instead of close_recruitment
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.CreateSession;
 using GmRelay.Shared.Rendering;
 using GmRelay.Bot.Features.Confirmation.HandleRsvp;
 using GmRelay.Bot.Features.Sessions.CreateSession;
@@ -69,18 +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;
         }
@@ -89,10 +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;
@@ -105,6 +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);
@@ -144,6 +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);

src/GmRelay.Bot/Migrations/V012__add_attendance_stats.sql

@@ -47,7 +47,7 @@ BEGIN
     SELECT
         pt.player_id,
         p.display_name,
-        p.telegram_username,
+        COALESCE(p.external_username, p.telegram_username) AS telegram_username,
         pt.total_sessions,
         pt.confirmed_count,
         pt.declined_count,

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/Program.cs

@@ -6,9 +6,12 @@ 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.Bot.Infrastructure.Health;
 using GmRelay.Bot.Infrastructure.Logging;
 using GmRelay.Bot.Infrastructure.Scheduling;
 using GmRelay.Bot.Infrastructure.Telegram;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Platform;
 using Npgsql;
 using Telegram.Bot;
 
@@ -49,14 +52,19 @@ builder.Services.AddSingleton<ITelegramBotClient>(sp =>
     return new TelegramBotClient(token);
 });
 builder.Services.AddSingleton<ITelegramUpdateSource, TelegramUpdateSource>();
+builder.Services.AddSingleton<IPlatformMessenger, TelegramPlatformMessenger>();
 
 // ── Feature handlers (explicit registration — AOT safe) ──────────────
 builder.Services.AddSingleton<SendConfirmationHandler>();
+builder.Services.AddSingleton<ISendConfirmationHandler>(sp => sp.GetRequiredService<SendConfirmationHandler>());
 builder.Services.AddSingleton<DirectSessionNotificationSender>();
 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>();
@@ -74,10 +82,17 @@ builder.Services.AddSingleton<ITelegramUpdateHandler>(sp => sp.GetRequiredServic
 builder.Services.AddHostedService<TelegramMiniAppMenuButtonService>();
 builder.Services.AddHostedService<TelegramBotService>();
 
+// ── Clock and scheduling ──────────────────────────────────────────────
+builder.Services.AddSingleton<ISystemClock, 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/packages.lock.json

@@ -0,0 +1,694 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Aspire.Npgsql": {
+        "type": "Direct",
+        "requested": "[13.2.2, )",
+        "resolved": "13.2.2",
+        "contentHash": "nEYgziWN7hksgEQEWy24JypcMCU8gKYcIIyPL05JfdXxUWuPRLotH/KOeuHevAjSEOYkL3dtGakBkJAuPobGmA==",
+        "dependencies": {
+          "AspNetCore.HealthChecks.NpgSql": "9.0.0",
+          "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.Hosting.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5",
+          "Microsoft.Extensions.Primitives": "10.0.5",
+          "Npgsql.DependencyInjection": "10.0.1",
+          "Npgsql.OpenTelemetry": "10.0.1",
+          "OpenTelemetry.Extensions.Hosting": "1.15.0"
+        }
+      },
+      "Dapper": {
+        "type": "Direct",
+        "requested": "[2.1.72, )",
+        "resolved": "2.1.72",
+        "contentHash": "ns4mGqQd9a/MhP8m6w556vVlZIa0/MfUu03zrxjZC/jlr1uVCsUac8bkdB+Fs98Llbd56rRSo1eZH5VVmeGZyw=="
+      },
+      "Dapper.AOT": {
+        "type": "Direct",
+        "requested": "[1.0.48, )",
+        "resolved": "1.0.48",
+        "contentHash": "rsLM3yKr4g+YKKox9lhc8D+kz67P7Q9+xdyn1LmCsoYr1kYpJSm+Nt6slo5UrfUrcTiGJ57zUlyO8XUdV7G7iA=="
+      },
+      "dbup-postgresql": {
+        "type": "Direct",
+        "requested": "[7.0.1, )",
+        "resolved": "7.0.1",
+        "contentHash": "mRnmENWWPuuMZ538gOd1mZnzucx6FQk0anmw3EABjGfcbp24FDb9QdGepYrDiaM8K9s5/gd49+5cmBOlniH/lg==",
+        "dependencies": {
+          "Npgsql": "10.0.1",
+          "dbup-core": "6.1.1"
+        }
+      },
+      "Microsoft.DotNet.ILCompiler": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
+        "contentHash": "yadTZIkStCVsG8nGwvfroSfBApPsgjQbodQyaIfp53dgayE0qhZpywixiCB6lx57JYQ+KVg1m1AFLrj54pxpZg=="
+      },
+      "Microsoft.Extensions.Hosting": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
+        "contentHash": "8i7e5IBdiKLNqt/+ciWrS8U95Rv5DClaaj7ulkZbimnCi4uREWd+lXzkp3joofFuIPOlAzV4AckxLTIELv2jdg==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration": "10.0.5",
+          "Microsoft.Extensions.Configuration.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Configuration.Binder": "10.0.5",
+          "Microsoft.Extensions.Configuration.CommandLine": "10.0.5",
+          "Microsoft.Extensions.Configuration.EnvironmentVariables": "10.0.5",
+          "Microsoft.Extensions.Configuration.FileExtensions": "10.0.5",
+          "Microsoft.Extensions.Configuration.Json": "10.0.5",
+          "Microsoft.Extensions.Configuration.UserSecrets": "10.0.5",
+          "Microsoft.Extensions.DependencyInjection": "10.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Diagnostics": "10.0.5",
+          "Microsoft.Extensions.FileProviders.Abstractions": "10.0.5",
+          "Microsoft.Extensions.FileProviders.Physical": "10.0.5",
+          "Microsoft.Extensions.Hosting.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging.Configuration": "10.0.5",
+          "Microsoft.Extensions.Logging.Console": "10.0.5",
+          "Microsoft.Extensions.Logging.Debug": "10.0.5",
+          "Microsoft.Extensions.Logging.EventLog": "10.0.5",
+          "Microsoft.Extensions.Logging.EventSource": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5"
+        }
+      },
+      "Microsoft.NET.ILLink.Tasks": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
+        "contentHash": "A+5ZuQ0f449tM+MQrhf6R9ZX7lYpjk/ODEwLYKrnF6111rtARx8fVsm4YznUnQiKnnXfaXNBqgxmil6RW3L3SA=="
+      },
+      "Npgsql": {
+        "type": "Direct",
+        "requested": "[10.0.2, )",
+        "resolved": "10.0.2",
+        "contentHash": "q5RfBI+wywJSFUNDE1L4ZbHEHCFTblo8Uf6A6oe4feOUFYiUQXyAf9GBh5qEZpvJaHiEbpBPkQumjEhXCJxdrg==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.0"
+        }
+      },
+      "SecurityCodeScan.VS2019": {
+        "type": "Direct",
+        "requested": "[5.6.7, )",
+        "resolved": "5.6.7",
+        "contentHash": "WIE9RJswdSc2j+rLz2gW6U+gMUjMHzY2j7C/CL8/R2olXNM/+twarfMnWqm+rZodDBvaYDApJyxM8mVYf9FGrQ=="
+      },
+      "Telegram.Bot": {
+        "type": "Direct",
+        "requested": "[22.9.5.3, )",
+        "resolved": "22.9.5.3",
+        "contentHash": "7u8rZU9Vx9XEyIm6pB+dAlITsi1v63I+hKo7IEXGiQZnVjzvZgPs9yDCP17/Cwm7lgjCNEqknlbv/yoBnsUYFw==",
+        "dependencies": {
+          "Microsoft.Extensions.Options.ConfigurationExtensions": "8.0.0"
+        }
+      },
+      "AspNetCore.HealthChecks.NpgSql": {
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+        "dependencies": {
+          "Polly.Core": "8.4.2",
+          "System.Threading.RateLimiting": "8.0.0"
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+      },
+      "System.Diagnostics.EventLog": {
+        "type": "Transitive",
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+      },
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+        "type": "Project",
+        "dependencies": {
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+          "Microsoft.Extensions.ServiceDiscovery": "[10.2.0, )",
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+          "OpenTelemetry.Instrumentation.Runtime": "[1.15.1, )"
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+      },
+      "gmrelay.shared": {
+        "type": "Project",
+        "dependencies": {
+          "Dapper": "[2.1.72, )",
+          "Microsoft.Extensions.Logging.Abstractions": "[10.0.5, )",
+          "Npgsql": "[10.0.2, )"
+        }
+      }
+    },
+    "net10.0/win-x64": {
+      "Microsoft.DotNet.ILCompiler": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
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+        "dependencies": {
+          "runtime.win-x64.Microsoft.DotNet.ILCompiler": "10.0.5"
+        }
+      },
+      "runtime.win-x64.Microsoft.DotNet.ILCompiler": {
+        "type": "Transitive",
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+      },
+      "System.Diagnostics.EventLog": {
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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 +1,20 @@
+# 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
+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/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 +1,101 @@
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using NetCord;
+using NetCord.Rest;
+using NetCord.Services.ComponentInteractions;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed class DiscordSessionInteractionModule(
+    JoinSessionHandler joinSessionHandler,
+    LeaveSessionHandler leaveSessionHandler,
+    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);
+    }
+
+    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(System.Globalization.CultureInfo.InvariantCulture),
+            ChannelId: Context.Channel.Id.ToString(System.Globalization.CultureInfo.InvariantCulture),
+            MessageId: message.Id.ToString(System.Globalization.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 +1,74 @@
+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,
+    DiscordInteractionReplyCache interactionReplies) : 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));
+
+        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,
+            options =>
+            {
+                options.Embeds = embeds;
+                options.Components = actionRows;
+            });
+    }
+
+    public Task SendGroupMessageAsync(PlatformGroup group, string htmlText, CancellationToken ct)
+    {
+        return Task.CompletedTask;
+    }
+
+    public Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct)
+    {
+        return Task.CompletedTask;
+    }
+
+    public Task AnswerInteractionAsync(PlatformInteractionReply reply, CancellationToken ct)
+    {
+        interactionReplies.Store(reply);
+        return Task.CompletedTask;
+    }
+
+    public Task SendCalendarFileAsync(PlatformCalendarFile file, CancellationToken ct)
+    {
+        return Task.CompletedTask;
+    }
+}

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/Program.cs

@@ -0,0 +1,67 @@
+using GmRelay.DiscordBot;
+using GmRelay.DiscordBot.Features.Sessions;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.DiscordBot.Infrastructure.Logging;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+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<IScheduleMessageUpdateLock, ScheduleMessageUpdateLock>();
+builder.Services.AddSingleton<JoinSessionHandler>();
+builder.Services.AddSingleton<LeaveSessionHandler>();
+builder.Services.AddSingleton<DiscordInteractionReplyCache>();
+builder.Services.AddSingleton<IPlatformMessenger, DiscordPlatformMessenger>();
+
+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/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 +1,678 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Aspire.Npgsql": {
+        "type": "Direct",
+        "requested": "[13.2.2, )",
+        "resolved": "13.2.2",
+        "contentHash": "nEYgziWN7hksgEQEWy24JypcMCU8gKYcIIyPL05JfdXxUWuPRLotH/KOeuHevAjSEOYkL3dtGakBkJAuPobGmA==",
+        "dependencies": {
+          "AspNetCore.HealthChecks.NpgSql": "9.0.0",
+          "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.Hosting.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5",
+          "Microsoft.Extensions.Primitives": "10.0.5",
+          "Npgsql.DependencyInjection": "10.0.1",
+          "Npgsql.OpenTelemetry": "10.0.1",
+          "OpenTelemetry.Extensions.Hosting": "1.15.0"
+        }
+      },
+      "Dapper": {
+        "type": "Direct",
+        "requested": "[2.1.72, )",
+        "resolved": "2.1.72",
+        "contentHash": "ns4mGqQd9a/MhP8m6w556vVlZIa0/MfUu03zrxjZC/jlr1uVCsUac8bkdB+Fs98Llbd56rRSo1eZH5VVmeGZyw=="
+      },
+      "Microsoft.Extensions.Hosting": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
+        "contentHash": "8i7e5IBdiKLNqt/+ciWrS8U95Rv5DClaaj7ulkZbimnCi4uREWd+lXzkp3joofFuIPOlAzV4AckxLTIELv2jdg==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration": "10.0.5",
+          "Microsoft.Extensions.Configuration.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Configuration.Binder": "10.0.5",
+          "Microsoft.Extensions.Configuration.CommandLine": "10.0.5",
+          "Microsoft.Extensions.Configuration.EnvironmentVariables": "10.0.5",
+          "Microsoft.Extensions.Configuration.FileExtensions": "10.0.5",
+          "Microsoft.Extensions.Configuration.Json": "10.0.5",
+          "Microsoft.Extensions.Configuration.UserSecrets": "10.0.5",
+          "Microsoft.Extensions.DependencyInjection": "10.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Diagnostics": "10.0.5",
+          "Microsoft.Extensions.FileProviders.Abstractions": "10.0.5",
+          "Microsoft.Extensions.FileProviders.Physical": "10.0.5",
+          "Microsoft.Extensions.Hosting.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging": "10.0.5",
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.5",
+          "Microsoft.Extensions.Logging.Configuration": "10.0.5",
+          "Microsoft.Extensions.Logging.Console": "10.0.5",
+          "Microsoft.Extensions.Logging.Debug": "10.0.5",
+          "Microsoft.Extensions.Logging.EventLog": "10.0.5",
+          "Microsoft.Extensions.Logging.EventSource": "10.0.5",
+          "Microsoft.Extensions.Options": "10.0.5"
+        }
+      },
+      "NetCord.Hosting": {
+        "type": "Direct",
+        "requested": "[1.0.0-alpha.489, )",
+        "resolved": "1.0.0-alpha.489",
+        "contentHash": "yQcvgY3uu98ndoLXpiFhJ5kungoWVLd7xnO18GmukRPVsRzyOKgxe/Ycp8DLYTtiQG9Wyg1pV4Iv6rvo+zck4w==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration.Binder": "10.0.8",
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+      },
+      "gmrelay.servicedefaults": {
+        "type": "Project",
+        "dependencies": {
+          "Microsoft.Extensions.Http.Resilience": "[10.2.0, )",
+          "Microsoft.Extensions.ServiceDiscovery": "[10.2.0, )",
+          "OpenTelemetry.Exporter.OpenTelemetryProtocol": "[1.15.3, )",
+          "OpenTelemetry.Extensions.Hosting": "[1.15.3, )",
+          "OpenTelemetry.Instrumentation.AspNetCore": "[1.15.2, )",
+          "OpenTelemetry.Instrumentation.Http": "[1.15.1, )",
+          "OpenTelemetry.Instrumentation.Runtime": "[1.15.1, )"
+        }
+      },
+      "gmrelay.shared": {
+        "type": "Project",
+        "dependencies": {
+          "Dapper": "[2.1.72, )",
+          "Microsoft.Extensions.Logging.Abstractions": "[10.0.5, )",
+          "Npgsql": "[10.0.2, )"
+        }
+      }
+    }
+  }
+}

src/GmRelay.ServiceDefaults/packages.lock.json

@@ -0,0 +1,181 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
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+        "dependencies": {
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+        "dependencies": {
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+        "dependencies": {
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+        "dependencies": {
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+        "dependencies": {
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+      "OpenTelemetry.Instrumentation.Http": {
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+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "[1.15.3, 2.0.0)"
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+        "dependencies": {
+          "OpenTelemetry.Api": "[1.15.3, 2.0.0)"
+        }
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+      },
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+      },
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+      },
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+        "contentHash": "3qMK1D40D10kb5TdBtFJpzz6/WH0NinWs68ZZS8jCFgHMXDiOjGiPOneMmIocCP/wnUUW4Hzf8lMsIE1xIGxDA=="
+      },
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+        "resolved": "10.2.0",
+        "contentHash": "I0FBgF6yZRwYH9E3KQ2vHm80YZ7YBj+52GDsmOWXPBv/p15b/wUoNupV9kw3LnSNVsWMqlGbiuZgBnHpMwPh+Q==",
+        "dependencies": {
+          "Microsoft.Extensions.Telemetry": "10.2.0"
+        }
+      },
+      "Microsoft.Extensions.Resilience": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "v4WOdAOFxB3AcsUkZWNcHL3mYzs4KAPtHO8rkoQlFKOBoD3KyjjAL+h3tRwSK5i4UpF/yhxsQRY0JxKj4osxxw==",
+        "dependencies": {
+          "Microsoft.Extensions.Diagnostics.ExceptionSummarization": "10.2.0",
+          "Microsoft.Extensions.Telemetry.Abstractions": "10.2.0",
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+        "dependencies": {
+          "Microsoft.Extensions.AmbientMetadata.Application": "10.2.0",
+          "Microsoft.Extensions.DependencyInjection.AutoActivation": "10.2.0",
+          "Microsoft.Extensions.Telemetry.Abstractions": "10.2.0"
+        }
+      },
+      "Microsoft.Extensions.Telemetry.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "6V4V6NX6RLUYWwV89DeW/4zK5xOycYHWhsfMXSpKVGgMHfXcczmbk6hBeqTnRPzhpATYcOWlmA6hk1jgdxUugA==",
+        "dependencies": {
+          "Microsoft.Extensions.Compliance.Abstractions": "10.2.0"
+        }
+      },
+      "OpenTelemetry": {
+        "type": "Transitive",
+        "resolved": "1.15.3",
+        "contentHash": "N0i6WjPoHPbZyms1ugbDIFAJFuGlpeExJMU/+XSL0lQRUkg/D0utFkDoLXf8Z1km5B+xVZ2GyMXXiX8qdeNmPg==",
+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.15.3"
+        }
+      },
+      "OpenTelemetry.Api": {
+        "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/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/Sessions/CreateSession/JoinSessionHandler.cs

@@ -1,32 +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 GmRelay.Bot.Infrastructure.Telegram;
+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;
@@ -34,17 +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",
@@ -54,7 +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;
             }
 
@@ -75,7 +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;
             }
 
@@ -109,7 +139,7 @@ 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;
             }
 
@@ -124,7 +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
@@ -138,20 +168,17 @@ public sealed class JoinSessionHandler(
 
             // 4. Перерисовываем сообщение
             var view = SessionBatchViewBuilder.Build(batchInfo.Title, batchSessions.ToList(), batchParticipants.ToList());
-            var renderResult = TelegramSessionBatchRenderer.Render(view);
-
-            await BatchMessageEditor.EditBatchMessageAsync(
-                bot,
-                chatId: command.ChatId,
-                messageId: command.MessageId,
-                text: renderResult.Text,
-                replyMarkup: renderResult.Markup,
+            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)
         {
@@ -164,7 +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);
 }

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

@@ -1,18 +1,18 @@
 using Dapper;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
+using Microsoft.Extensions.Logging;
 using Npgsql;
-using Telegram.Bot;
-using GmRelay.Bot.Infrastructure.Telegram;
 
-namespace GmRelay.Bot.Features.Sessions.CreateSession;
+namespace GmRelay.Shared.Features.Sessions.CreateSession;
 
 public sealed record LeaveSessionCommand(
     Guid SessionId,
-    long TelegramUserId,
-    string CallbackQueryId,
-    long ChatId,
-    int MessageId);
+    PlatformUser User,
+    string InteractionId,
+    PlatformGroup Group,
+    PlatformMessageRef ScheduleMessage);
 
 internal sealed record LeaveSessionInfoDto(string Title, Guid BatchId, string Status, int? MaxPlayers);
 internal sealed record LeaveSessionParticipantDto(Guid ParticipantRowId, string DisplayName, string RegistrationStatus);
@@ -20,11 +20,13 @@ internal sealed record LeaveSessionPromotionDto(Guid ParticipantRowId, string Di
 
 public sealed class LeaveSessionHandler(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
+    IPlatformMessenger messenger,
+    IScheduleMessageUpdateLock scheduleUpdateLock,
     ILogger<LeaveSessionHandler> logger)
 {
     public async Task HandleAsync(LeaveSessionCommand 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;
@@ -47,17 +49,19 @@ public sealed class LeaveSessionHandler(
             if (session 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(session.Status))
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия уже отменена.", cancellationToken: ct);
+                await AnswerAsync(command.InteractionId, "Сессия уже отменена.", ct);
                 return;
             }
 
+            var platform = command.User.Platform.ToString();
+
             var participant = await connection.QuerySingleOrDefaultAsync<LeaveSessionParticipantDto>(
                 """
                 SELECT sp.id AS ParticipantRowId,
@@ -66,17 +70,18 @@ public sealed class LeaveSessionHandler(
                 FROM session_participants sp
                 JOIN players p ON p.id = sp.player_id
                 WHERE sp.session_id = @SessionId
-                  AND p.telegram_id = @TelegramUserId
+                  AND p.platform = @Platform
+                  AND p.external_user_id = @ExternalUserId
                   AND sp.is_gm = false
                 FOR UPDATE OF sp
                 """,
-                new { command.SessionId, command.TelegramUserId },
+                new { command.SessionId, Platform = platform, command.User.ExternalUserId },
                 transaction);
 
             if (participant is null)
             {
                 await transaction.RollbackAsync(ct);
-                await bot.AnswerCallbackQuery(command.CallbackQueryId, "Вы не записаны на эту сессию.", cancellationToken: ct);
+                await AnswerAsync(command.InteractionId, "Вы не записаны на эту сессию.", ct);
                 return;
             }
 
@@ -170,7 +175,7 @@ public sealed class LeaveSessionHandler(
                 """
                 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
@@ -185,14 +190,11 @@ public sealed class LeaveSessionHandler(
             transactionCommitted = true;
 
             var view = SessionBatchViewBuilder.Build(session.Title, batchSessions, batchParticipants);
-            var renderResult = TelegramSessionBatchRenderer.Render(view);
-
-            await BatchMessageEditor.EditBatchMessageAsync(
-                bot,
-                chatId: command.ChatId,
-                messageId: command.MessageId,
-                text: renderResult.Text,
-                replyMarkup: renderResult.Markup,
+            await messenger.UpdateScheduleAsync(
+                new PlatformScheduleMessage(
+                    command.Group,
+                    view,
+                    command.ScheduleMessage),
                 ct);
 
             var callbackText = participant.RegistrationStatus == ParticipantRegistrationStatus.Waitlisted
@@ -201,7 +203,7 @@ public sealed class LeaveSessionHandler(
                     ? "Вы отписались от сессии."
                     : $"Вы отписались от сессии. Место получил(а) {promotedDisplayName}.";
 
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, callbackText, cancellationToken: ct);
+            await AnswerAsync(command.InteractionId, callbackText, ct);
         }
         catch (Exception ex)
         {
@@ -214,7 +216,10 @@ public sealed class LeaveSessionHandler(
             var errorText = transactionCommitted
                 ? "Запись снята, но не удалось обновить сообщение расписания."
                 : "Произошла ошибка при отмене записи.";
-            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);
 }

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

@@ -0,0 +1,39 @@
+using System.Collections.Concurrent;
+using GmRelay.Shared.Platform;
+
+namespace GmRelay.Shared.Features.Sessions.CreateSession;
+
+public interface IScheduleMessageUpdateLock
+{
+    ValueTask<IAsyncDisposable> AcquireAsync(PlatformMessageRef scheduleMessage, CancellationToken ct);
+}
+
+public sealed class ScheduleMessageUpdateLock : IScheduleMessageUpdateLock
+{
+    private readonly ConcurrentDictionary<string, SemaphoreSlim> locks = new(StringComparer.Ordinal);
+
+    public async ValueTask<IAsyncDisposable> AcquireAsync(PlatformMessageRef scheduleMessage, CancellationToken ct)
+    {
+        var key = CreateKey(scheduleMessage);
+        var semaphore = locks.GetOrAdd(key, _ => new SemaphoreSlim(1, 1));
+        await semaphore.WaitAsync(ct);
+        return new Releaser(semaphore);
+    }
+
+    private static string CreateKey(PlatformMessageRef scheduleMessage) =>
+        string.Join(
+            '\u001F',
+            scheduleMessage.Platform.ToString(),
+            scheduleMessage.ExternalGroupId,
+            scheduleMessage.ExternalThreadId ?? string.Empty,
+            scheduleMessage.ExternalMessageId);
+
+    private sealed class Releaser(SemaphoreSlim semaphore) : IAsyncDisposable
+    {
+        public ValueTask DisposeAsync()
+        {
+            semaphore.Release();
+            return ValueTask.CompletedTask;
+        }
+    }
+}

src/GmRelay.Shared/GmRelay.Shared.csproj

@@ -5,6 +5,14 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <LangVersion>preview</LangVersion>
+    <InterceptorsPreviewNamespaces>$(InterceptorsPreviewNamespaces);Dapper.AOT</InterceptorsPreviewNamespaces>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Dapper" Version="2.1.72" />
+    <PackageReference Include="Dapper.AOT" Version="1.0.48" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.5" />
+    <PackageReference Include="Npgsql" Version="10.0.2" />
+  </ItemGroup>
+
 </Project>

src/GmRelay.Shared/Platform/IPlatformMessenger.cs

@@ -0,0 +1,16 @@
+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);
+}

src/GmRelay.Shared/Platform/PlatformGroup.cs

@@ -0,0 +1,8 @@
+namespace GmRelay.Shared.Platform;
+
+public sealed record PlatformGroup(
+    PlatformKind Platform,
+    string ExternalGroupId,
+    string DisplayName,
+    string? ExternalChannelId = null,
+    string? ExternalThreadId = null);

src/GmRelay.Shared/Platform/PlatformKind.cs

@@ -0,0 +1,8 @@
+namespace GmRelay.Shared.Platform;
+
+public enum PlatformKind
+{
+    Telegram = 0,
+    Discord = 1,
+    Max = 2
+}

src/GmRelay.Shared/Platform/PlatformMessageContracts.cs

@@ -0,0 +1,36 @@
+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);

src/GmRelay.Shared/Platform/PlatformUser.cs

@@ -0,0 +1,7 @@
+namespace GmRelay.Shared.Platform;
+
+public sealed record PlatformUser(
+    PlatformKind Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername);

src/GmRelay.Shared/Rendering/DiscordSessionBatchRenderer.cs

@@ -1,13 +0,0 @@
-namespace GmRelay.Shared.Rendering;
-
-/// <summary>
-/// Заглушка для Discord-рендерера.
-/// Реальная реализация будет добавлена в проект GmRelay.DiscordBot (issue #26).
-/// </summary>
-public static class DiscordSessionBatchRenderer
-{
-    public static object Render(SessionBatchViewModel view)
-    {
-        throw new NotImplementedException("Discord renderer will be implemented in issue #26.");
-    }
-}

src/GmRelay.Shared/packages.lock.json

@@ -0,0 +1,48 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Dapper": {
+        "type": "Direct",
+        "requested": "[2.1.72, )",
+        "resolved": "2.1.72",
+        "contentHash": "ns4mGqQd9a/MhP8m6w556vVlZIa0/MfUu03zrxjZC/jlr1uVCsUac8bkdB+Fs98Llbd56rRSo1eZH5VVmeGZyw=="
+      },
+      "Dapper.AOT": {
+        "type": "Direct",
+        "requested": "[1.0.48, )",
+        "resolved": "1.0.48",
+        "contentHash": "rsLM3yKr4g+YKKox9lhc8D+kz67P7Q9+xdyn1LmCsoYr1kYpJSm+Nt6slo5UrfUrcTiGJ57zUlyO8XUdV7G7iA=="
+      },
+      "Microsoft.Extensions.Logging.Abstractions": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
+        "contentHash": "9HOdqlDtPptVcmKAjsQ/Nr5Rxfq6FMYLdhvZh1lVmeKR738qeYecQD7+ldooXf+u2KzzR1kafSphWngIM3C6ug==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.5"
+        }
+      },
+      "Npgsql": {
+        "type": "Direct",
+        "requested": "[10.0.2, )",
+        "resolved": "10.0.2",
+        "contentHash": "q5RfBI+wywJSFUNDE1L4ZbHEHCFTblo8Uf6A6oe4feOUFYiUQXyAf9GBh5qEZpvJaHiEbpBPkQumjEhXCJxdrg==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.0"
+        }
+      },
+      "SecurityCodeScan.VS2019": {
+        "type": "Direct",
+        "requested": "[5.6.7, )",
+        "resolved": "5.6.7",
+        "contentHash": "WIE9RJswdSc2j+rLz2gW6U+gMUjMHzY2j7C/CL8/R2olXNM/+twarfMnWqm+rZodDBvaYDApJyxM8mVYf9FGrQ=="
+      },
+      "Microsoft.Extensions.DependencyInjection.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.0.5",
+        "contentHash": "iVMtq9eRvzyhx8949EGT0OCYJfXi737SbRVzWXE5GrOgGj5AaZ9eUuxA/BSUfmOMALKn/g8KfFaNQw0eiB3lyA=="
+      }
+    }
+  }
+}

src/GmRelay.Web/Components/App.razor

@@ -10,7 +10,7 @@
     <ResourcePreloader />
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
-    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet" />
+    <link href="https://fonts.googleapis.com/css2?family=Cinzel+Decorative:wght@400;700&family=Cinzel:wght@400;600;700&family=Jura:wght@400;500;600;700&display=swap" rel="stylesheet" />
     <link rel="stylesheet" href="@Assets["app.css"]" />
     <link rel="stylesheet" href="@Assets["GmRelay.Web.styles.css"]" />
     <script src="https://telegram.org/js/telegram-web-app.js"></script>

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

@@ -30,8 +30,9 @@
 
 /* === Error UI === */
 #blazor-error-ui {
-    background: var(--bg-secondary);
-    border-top: 1px solid var(--border-color);
+    background: var(--status-danger-bg);
+    color: var(--status-danger);
+    border-top: 1px solid rgba(239, 68, 68, 0.15);
     bottom: 0;
     box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
     box-sizing: border-box;
@@ -41,8 +42,9 @@
     position: fixed;
     width: 100%;
     z-index: 1000;
-    color: var(--text-secondary);
     font-size: 0.875rem;
+    font-family: 'Jura', sans-serif;
+    font-weight: 500;
 }
 
     #blazor-error-ui .reload {

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

@@ -56,7 +56,7 @@
                     </button>
                 </form>
 
-                <div class="nav-version">v1.12.0</div>
+                <div class="nav-version">v2.5.0</div>
             </div>
         </Authorized>
         <NotAuthorized>
@@ -79,4 +79,4 @@
 
     private void ToggleMenu() => isOpen = !isOpen;
     private void CloseMenu() => isOpen = false;
-}
+}

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

@@ -23,12 +23,11 @@
 }
 
 .nav-brand-text {
+    font-family: 'Cinzel Decorative', 'Cinzel', serif;
     font-size: 1.125rem;
     font-weight: 700;
-    background: var(--accent-gradient);
-    -webkit-background-clip: text;
-    -webkit-text-fill-color: transparent;
-    background-clip: text;
+    letter-spacing: 0.04em;
+    color: var(--text-primary);
 }
 
 .nav-toggle {
@@ -87,9 +86,10 @@
 }
 
 .nav-section ::deep .nav-item.active {
-    background: rgba(124, 58, 237, 0.15);
-    color: var(--accent-primary);
-    border: 1px solid rgba(124, 58, 237, 0.2);
+    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(34, 211, 238, 0.08) 100%);
+    color: var(--text-accent);
+    border: 1px solid rgba(139, 92, 246, 0.25);
+    box-shadow: 0 0 12px rgba(139, 92, 246, 0.1);
 }
 
 .nav-icon {
@@ -145,7 +145,7 @@
     border: 1px solid transparent;
     border-radius: var(--radius-sm);
     color: var(--text-muted);
-    font-family: 'Inter', sans-serif;
+    font-family: 'Jura', sans-serif;
     font-size: 0.8125rem;
     cursor: pointer;
     transition: all var(--transition-normal);

src/GmRelay.Web/Dockerfile

@@ -18,8 +18,10 @@ RUN dotnet publish "GmRelay.Web.csproj" -c Release -o /app/publish /p:UseAppHost
 # Stage 2: Runtime
 FROM mcr.microsoft.com/dotnet/aspnet:10.0-noble AS final
 WORKDIR /app
-RUN apt-get update && apt-get install -y libgssapi-krb5-2 && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y --no-install-recommends libgssapi-krb5-2 wget && rm -rf /var/lib/apt/lists/*
 COPY --from=build /app/publish .
+RUN mkdir -p /app/dataprotection-keys && chown -R $APP_UID:$APP_UID /app/dataprotection-keys
 ENV ASPNETCORE_URLS=http://+:8080
 EXPOSE 8080
+USER $APP_UID
 ENTRYPOINT ["dotnet", "GmRelay.Web.dll"]

src/GmRelay.Web/Health/NpgsqlHealthCheck.cs

@@ -0,0 +1,25 @@
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using Npgsql;
+
+namespace GmRelay.Web.Health;
+
+public sealed class NpgsqlHealthCheck(NpgsqlDataSource dataSource) : IHealthCheck
+{
+    public async Task<HealthCheckResult> CheckHealthAsync(
+        HealthCheckContext context,
+        CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+            await using var command = connection.CreateCommand();
+            command.CommandText = "SELECT 1";
+            await command.ExecuteScalarAsync(cancellationToken);
+            return HealthCheckResult.Healthy();
+        }
+        catch (Exception ex)
+        {
+            return HealthCheckResult.Unhealthy("PostgreSQL is unavailable", ex);
+        }
+    }
+}

src/GmRelay.Web/Program.cs

@@ -1,9 +1,13 @@
 using GmRelay.Web.Components;
+using GmRelay.Web.Health;
 using GmRelay.Web.Services;
 using Microsoft.AspNetCore.Authentication.Cookies;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.DataProtection;
+using Microsoft.AspNetCore.Diagnostics.HealthChecks;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
 using System.Security.Claims;
+using System.Text.Json;
 using Telegram.Bot;
 using Npgsql;
 
@@ -12,6 +16,10 @@ var builder = WebApplication.CreateBuilder(args);
 // Add Aspire service defaults
 builder.AddServiceDefaults();
 
+// Add health checks
+builder.Services.AddHealthChecks()
+    .AddCheck<NpgsqlHealthCheck>("npgsql");
+
 // Add Data Protection
 builder.Services.AddDataProtection()
     .PersistKeysToFileSystem(new DirectoryInfo("/app/dataprotection-keys"));
@@ -83,6 +91,26 @@ app.MapStaticAssets();
 app.MapRazorComponents<App>()
     .AddInteractiveServerRenderMode();
 
+// Health check endpoints
+app.MapHealthChecks("/health", new HealthCheckOptions
+{
+    ResponseWriter = async (context, report) =>
+    {
+        context.Response.ContentType = "application/json";
+        var response = new
+        {
+            status = report.Status == HealthStatus.Healthy ? "healthy" : "unhealthy",
+            timestamp = DateTimeOffset.UtcNow.ToString("O")
+        };
+        await context.Response.WriteAsJsonAsync(response);
+    }
+});
+
+app.MapHealthChecks("/alive", new HealthCheckOptions
+{
+    Predicate = r => r.Tags.Contains("live")
+});
+
 // Endpoint to handle Telegram Login callback
 app.MapGet("/auth/telegram", async (HttpContext context, TelegramAuthService authService) =>
 {

src/GmRelay.Web/Services/SessionService.cs

@@ -38,7 +38,8 @@ public sealed record WebSession(
     int? MaxPlayers,
     int ActivePlayerCount,
     int WaitlistedPlayerCount,
-    string NotificationMode = SessionNotificationModeExtensions.GroupAndDirectValue);
+    string NotificationMode = SessionNotificationModeExtensions.GroupAndDirectValue,
+    int? ThreadId = null);
 
 public sealed record WebParticipant(
     Guid Id,
@@ -73,7 +74,8 @@ internal sealed record WebBatchSessionRow(
     int? BatchMessageId,
     long TelegramChatId,
     int? ThreadId,
-    string NotificationMode);
+    string NotificationMode,
+    bool TopicCreatedByBot = false);
 internal sealed record WebTemplateGroupDto(long TelegramChatId);
 
 public sealed class SessionService(
@@ -240,11 +242,14 @@ public sealed class SessionService(
 
         await conn.ExecuteAsync(
             """
-            INSERT INTO players (telegram_id, display_name, telegram_username)
-            VALUES (@TelegramId, @DisplayName, @TelegramUsername)
+            INSERT INTO players (telegram_id, display_name, telegram_username, platform, external_user_id, external_username)
+            VALUES (@TelegramId, @DisplayName, @TelegramUsername, 'Telegram', @TelegramId::TEXT, @TelegramUsername)
             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
             {
@@ -314,7 +319,8 @@ public sealed class SessionService(
                      s.max_players AS MaxPlayers,
                      COALESCE(active_counts.count, 0)::int AS ActivePlayerCount,
                      COALESCE(waitlist_counts.count, 0)::int AS WaitlistedPlayerCount,
-                     s.notification_mode AS NotificationMode
+                     s.notification_mode AS NotificationMode,
+                     s.thread_id AS ThreadId
               FROM sessions s
               JOIN game_groups g ON g.id = s.group_id
               LEFT JOIN LATERAL (
@@ -351,7 +357,8 @@ public sealed class SessionService(
                      s.max_players AS MaxPlayers,
                      COALESCE(active_counts.count, 0)::int AS ActivePlayerCount,
                      COALESCE(waitlist_counts.count, 0)::int AS WaitlistedPlayerCount,
-                     s.notification_mode AS NotificationMode
+                     s.notification_mode AS NotificationMode,
+                     s.thread_id AS ThreadId
               FROM sessions s
               JOIN game_groups g ON g.id = s.group_id
               LEFT JOIN LATERAL (
@@ -409,7 +416,8 @@ public sealed class SessionService(
                      s.max_players AS MaxPlayers,
                      0 AS ActivePlayerCount,
                      0 AS WaitlistedPlayerCount,
-                     s.notification_mode AS NotificationMode
+                     s.notification_mode AS NotificationMode,
+                     s.thread_id AS ThreadId
               FROM sessions s
               JOIN game_groups g ON g.id = s.group_id
               WHERE s.id = @Id AND s.group_id = @GroupId",
@@ -463,7 +471,11 @@ public sealed class SessionService(
                            "\n" +
                            $"👥 Мест: <b>{(maxPlayers.HasValue ? maxPlayers.Value.ToString(System.Globalization.CultureInfo.InvariantCulture) : "без лимита")}</b>";
 
-        await bot.SendMessage(oldSession.TelegramChatId, notification, parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
+        await bot.SendMessage(
+            chatId: oldSession.TelegramChatId,
+            messageThreadId: oldSession.ThreadId,
+            text: notification,
+            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
 
         var mode = SessionNotificationModeExtensions.FromDatabaseValue(oldSession.NotificationMode);
         if (mode.ShouldSendDirectMessages())
@@ -490,7 +502,8 @@ public sealed class SessionService(
                      s.max_players AS MaxPlayers,
                      0 AS ActivePlayerCount,
                      0 AS WaitlistedPlayerCount,
-                     s.notification_mode AS NotificationMode
+                     s.notification_mode AS NotificationMode,
+                     s.thread_id AS ThreadId
               FROM sessions s
               JOIN game_groups g ON g.id = s.group_id
               WHERE s.id = @SessionId AND s.group_id = @GroupId
@@ -567,8 +580,9 @@ public sealed class SessionService(
         await transaction.CommitAsync();
 
         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)}».",
+            chatId: session.TelegramChatId,
+            messageThreadId: session.ThreadId,
+            text: $"⬆️ <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)
@@ -612,7 +626,8 @@ public sealed class SessionService(
                      s.max_players AS MaxPlayers,
                      0 AS ActivePlayerCount,
                      0 AS WaitlistedPlayerCount,
-                     s.notification_mode AS NotificationMode
+                     s.notification_mode AS NotificationMode,
+                     s.thread_id AS ThreadId
               FROM sessions s
               JOIN game_groups g ON g.id = s.group_id
               WHERE s.id = @SessionId AND s.group_id = @GroupId
@@ -697,15 +712,17 @@ public sealed class SessionService(
         await transaction.CommitAsync();
 
         await bot.SendMessage(
-            session.TelegramChatId,
-            $"🚪 <b>{System.Net.WebUtility.HtmlEncode(participant.DisplayName)}</b> удален(а) из сессии «{System.Net.WebUtility.HtmlEncode(session.Title)}».",
+            chatId: session.TelegramChatId,
+            messageThreadId: session.ThreadId,
+            text: $"🚪 <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)}».",
+                chatId: session.TelegramChatId,
+                messageThreadId: session.ThreadId,
+                text: $"⬆️ <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)
@@ -813,6 +830,7 @@ public sealed class SessionService(
                    s.batch_message_id AS BatchMessageId,
                    g.telegram_chat_id AS TelegramChatId,
                    s.thread_id AS ThreadId,
+                   s.topic_created_by_bot AS TopicCreatedByBot,
                    s.notification_mode AS NotificationMode
             FROM sessions s
             JOIN game_groups g ON g.id = s.group_id
@@ -865,7 +883,11 @@ public sealed class SessionService(
                            $"🗓 Новое начало: <b>{firstScheduledAt.FormatMoscow()}</b> (МСК)\n" +
                            $"↔️ Шаг: <b>{intervalDays} дн.</b>";
 
-        await bot.SendMessage(firstSession.TelegramChatId, notification, parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
+        await bot.SendMessage(
+            chatId: firstSession.TelegramChatId,
+            messageThreadId: firstSession.ThreadId,
+            text: notification,
+            parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
 
         var mode = SessionNotificationModeExtensions.FromDatabaseValue(firstSession.NotificationMode);
         if (mode.ShouldSendDirectMessages())
@@ -892,6 +914,7 @@ public sealed class SessionService(
                    s.batch_message_id AS BatchMessageId,
                    g.telegram_chat_id AS TelegramChatId,
                    s.thread_id AS ThreadId,
+                   s.topic_created_by_bot AS TopicCreatedByBot,
                    s.notification_mode AS NotificationMode
             FROM sessions s
             JOIN game_groups g ON g.id = s.group_id
@@ -920,8 +943,8 @@ public sealed class SessionService(
             var scheduledAt = BatchSchedulePlanner.ShiftForClone(sourceSession.ScheduledAt, interval);
             var sessionId = await conn.ExecuteScalarAsync<Guid>(
                 """
-                INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id, max_players, notification_mode)
-                VALUES (@BatchId, @GroupId, @Title, @JoinLink, @ScheduledAt, @Status, @ThreadId, @MaxPlayers, @NotificationMode)
+                INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id, topic_created_by_bot, max_players, notification_mode)
+                VALUES (@BatchId, @GroupId, @Title, @JoinLink, @ScheduledAt, @Status, @ThreadId, @TopicCreatedByBot, @MaxPlayers, @NotificationMode)
                 RETURNING id
                 """,
                 new
@@ -933,6 +956,7 @@ public sealed class SessionService(
                     ScheduledAt = scheduledAt,
                     Status = SessionStatus.Planned,
                     ThreadId = threadId,
+                    sourceSession.TopicCreatedByBot,
                     sourceSession.MaxPlayers,
                     sourceSession.NotificationMode
                 },

src/GmRelay.Web/packages.lock.json

@@ -0,0 +1,254 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Aspire.Npgsql": {
+        "type": "Direct",
+        "requested": "[13.2.2, )",
+        "resolved": "13.2.2",
+        "contentHash": "nEYgziWN7hksgEQEWy24JypcMCU8gKYcIIyPL05JfdXxUWuPRLotH/KOeuHevAjSEOYkL3dtGakBkJAuPobGmA==",
+        "dependencies": {
+          "AspNetCore.HealthChecks.NpgSql": "9.0.0",
+          "Npgsql.DependencyInjection": "10.0.1",
+          "Npgsql.OpenTelemetry": "10.0.1",
+          "OpenTelemetry.Extensions.Hosting": "1.15.0"
+        }
+      },
+      "Dapper": {
+        "type": "Direct",
+        "requested": "[2.1.72, )",
+        "resolved": "2.1.72",
+        "contentHash": "ns4mGqQd9a/MhP8m6w556vVlZIa0/MfUu03zrxjZC/jlr1uVCsUac8bkdB+Fs98Llbd56rRSo1eZH5VVmeGZyw=="
+      },
+      "Microsoft.AspNetCore.App.Internal.Assets": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
+        "contentHash": "Oxw9Ps1/nd6c/EMCAI13AeJFEqXezAvCEOshMjUWmL7LeGirHJNzytR2e/3jINYg0j2TmPvNUowGHf+gp8zDSQ=="
+      },
+      "Npgsql": {
+        "type": "Direct",
+        "requested": "[10.0.2, )",
+        "resolved": "10.0.2",
+        "contentHash": "q5RfBI+wywJSFUNDE1L4ZbHEHCFTblo8Uf6A6oe4feOUFYiUQXyAf9GBh5qEZpvJaHiEbpBPkQumjEhXCJxdrg=="
+      },
+      "SecurityCodeScan.VS2019": {
+        "type": "Direct",
+        "requested": "[5.6.7, )",
+        "resolved": "5.6.7",
+        "contentHash": "WIE9RJswdSc2j+rLz2gW6U+gMUjMHzY2j7C/CL8/R2olXNM/+twarfMnWqm+rZodDBvaYDApJyxM8mVYf9FGrQ=="
+      },
+      "Telegram.Bot": {
+        "type": "Direct",
+        "requested": "[22.9.6.1, )",
+        "resolved": "22.9.6.1",
+        "contentHash": "I0eaMaETcWIhMn4uu4RGd9e6PLJOjaOG3QAcKPsTcS80H3TF6gqj3UF9NKu4ZY90ul6Y6NiWToHkg/PsvxkotA=="
+      },
+      "AspNetCore.HealthChecks.NpgSql": {
+        "type": "Transitive",
+        "resolved": "9.0.0",
+        "contentHash": "npc58/AD5zuVxERdhCl2Kb7WnL37mwX42SJcXIwvmEig0/dugOLg3SIwtfvvh3TnvTwR/sk5LYNkkPaBdks61A==",
+        "dependencies": {
+          "Npgsql": "8.0.3"
+        }
+      },
+      "Microsoft.Extensions.AmbientMetadata.Application": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "CNrEjaOCZ8d1HtB0mvpiX4EWxLkee2xy+CsYXxmsEYJSFgw3OmF9pIhP/tCTeYBHhpsKJj5wM63G8IBFGxAcsw=="
+      },
+      "Microsoft.Extensions.Compliance.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "1a4xDAT6fRyP8t419q3WvWMmMslDTvI7OAZLWBhn5rysFG0bl5xFenTswd1xAbT/3u3mx4Xyb5bPx+V+18tJeQ=="
+      },
+      "Microsoft.Extensions.DependencyInjection.AutoActivation": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "Z/OI261l7LnxyODKPx0trQyIHFyicCR/akfn64lGOjPcf4FpAZ7ePAGl2HPvQBUBSNfPTF0gWeCfuFmyftMgYA=="
+      },
+      "Microsoft.Extensions.Diagnostics.ExceptionSummarization": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "3qMK1D40D10kb5TdBtFJpzz6/WH0NinWs68ZZS8jCFgHMXDiOjGiPOneMmIocCP/wnUUW4Hzf8lMsIE1xIGxDA=="
+      },
+      "Microsoft.Extensions.Http.Diagnostics": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "I0FBgF6yZRwYH9E3KQ2vHm80YZ7YBj+52GDsmOWXPBv/p15b/wUoNupV9kw3LnSNVsWMqlGbiuZgBnHpMwPh+Q==",
+        "dependencies": {
+          "Microsoft.Extensions.Telemetry": "10.2.0"
+        }
+      },
+      "Microsoft.Extensions.Http.Resilience": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "Lg+OjBW+ODDbM4Ax4LoERvQ1dqSZ8I2gQc2+B0/WOWl2+PunLJ3xb3x8MtHGfcb/Mp98RoMpwRKm6Aj9mzXwrA==",
+        "dependencies": {
+          "Microsoft.Extensions.Http.Diagnostics": "10.2.0",
+          "Microsoft.Extensions.Resilience": "10.2.0"
+        }
+      },
+      "Microsoft.Extensions.Resilience": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "v4WOdAOFxB3AcsUkZWNcHL3mYzs4KAPtHO8rkoQlFKOBoD3KyjjAL+h3tRwSK5i4UpF/yhxsQRY0JxKj4osxxw==",
+        "dependencies": {
+          "Microsoft.Extensions.Diagnostics.ExceptionSummarization": "10.2.0",
+          "Microsoft.Extensions.Telemetry.Abstractions": "10.2.0",
+          "Polly.Extensions": "8.4.2",
+          "Polly.RateLimiting": "8.4.2"
+        }
+      },
+      "Microsoft.Extensions.ServiceDiscovery": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "AHTPfiKodj66xA8RwRkFD4q11V2AvzcuDsujv6ViPkOPtvBEYcPVplHakK56pPzWlX08MDS+TAQXfFXAeP7J5w==",
+        "dependencies": {
+          "Microsoft.Extensions.ServiceDiscovery.Abstractions": "10.2.0"
+        }
+      },
+      "Microsoft.Extensions.ServiceDiscovery.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "sANlOvfqfw/yfych4CLlHSKSWzIie6mQG7w83gVur1foNOafyHxcgpoQMvBf+KiB4Tpls6P1/Z77IIQSK8hxFg=="
+      },
+      "Microsoft.Extensions.Telemetry": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "ssW5gosYlewNH/ISTyaLD/XfJT4GSjwShOUKv61fpXrqVmHkhuIA/5bBAGStM1XbzJjt9IG2vzfdHTu4zlX9Ew==",
+        "dependencies": {
+          "Microsoft.Extensions.AmbientMetadata.Application": "10.2.0",
+          "Microsoft.Extensions.DependencyInjection.AutoActivation": "10.2.0",
+          "Microsoft.Extensions.Telemetry.Abstractions": "10.2.0"
+        }
+      },
+      "Microsoft.Extensions.Telemetry.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "6V4V6NX6RLUYWwV89DeW/4zK5xOycYHWhsfMXSpKVGgMHfXcczmbk6hBeqTnRPzhpATYcOWlmA6hk1jgdxUugA==",
+        "dependencies": {
+          "Microsoft.Extensions.Compliance.Abstractions": "10.2.0"
+        }
+      },
+      "Npgsql.DependencyInjection": {
+        "type": "Transitive",
+        "resolved": "10.0.1",
+        "contentHash": "YHFa4vD27sNIfv6s5q8Zi1fLvKfmK1xcpMv0PUvXOxDFbRmuMRSHwpZTbPvsAlj97q1/o7DfyynLqfqrCm1VnA==",
+        "dependencies": {
+          "Npgsql": "10.0.1"
+        }
+      },
+      "Npgsql.OpenTelemetry": {
+        "type": "Transitive",
+        "resolved": "10.0.1",
+        "contentHash": "G9fEIBaHggZXWfDSDnKLc0XwKcbuU6i2eXp7zDqpgYxbhCmIN9fRgaSOGyyMNHSo/yY1IB4G4CjW5VO/SKRR0g==",
+        "dependencies": {
+          "Npgsql": "10.0.1",
+          "OpenTelemetry.API": "1.14.0"
+        }
+      },
+      "OpenTelemetry": {
+        "type": "Transitive",
+        "resolved": "1.15.3",
+        "contentHash": "N0i6WjPoHPbZyms1ugbDIFAJFuGlpeExJMU/+XSL0lQRUkg/D0utFkDoLXf8Z1km5B+xVZ2GyMXXiX8qdeNmPg==",
+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.15.3"
+        }
+      },
+      "OpenTelemetry.Api": {
+        "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"
+        }
+      },
+      "OpenTelemetry.Exporter.OpenTelemetryProtocol": {
+        "type": "Transitive",
+        "resolved": "1.15.3",
+        "contentHash": "FEXJepcseTGbATiCkUfP7ipoFEYYfl/0UmmUwi0KxCPg9PaUA8ab2P1LGopK+/HExasJ1ZutFhZrN6WvUIR23g==",
+        "dependencies": {
+          "OpenTelemetry": "1.15.3"
+        }
+      },
+      "OpenTelemetry.Extensions.Hosting": {
+        "type": "Transitive",
+        "resolved": "1.15.3",
+        "contentHash": "u8n/W8yIlqv0BXZmvId1iVaeWXG42tGKdTkuLYg5g57Y/r9CeUNzqtrSHNdG5IoO8iPX79w3v+WsbAHgUQbfeg==",
+        "dependencies": {
+          "OpenTelemetry": "1.15.3"
+        }
+      },
+      "OpenTelemetry.Instrumentation.AspNetCore": {
+        "type": "Transitive",
+        "resolved": "1.15.2",
+        "contentHash": "2nPd7r0ug/gd6/CNFL6Rlu+RSQ9WYGSGHAYQ1ssbSqyzKJpqTunfx2I/1O0WB5k+L0cyXbG4XVZpoSoUc3M7wg==",
+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "[1.15.3, 2.0.0)"
+        }
+      },
+      "OpenTelemetry.Instrumentation.Http": {
+        "type": "Transitive",
+        "resolved": "1.15.1",
+        "contentHash": "vFO4Fj/dXkoVNGo/nhoGpO2zYQmZwr4jTID7oRGo+XlQ8LqksyZjUXQ4p39RfUvTID7IzzL8Qe71tW7CcAFymA==",
+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "[1.15.3, 2.0.0)"
+        }
+      },
+      "OpenTelemetry.Instrumentation.Runtime": {
+        "type": "Transitive",
+        "resolved": "1.15.1",
+        "contentHash": "cpPwlUT5HXcLGPaIgsbSy0W9eFYAPGVbTP1p8/uyQ4Osvf5BJuPpEXE7crL09SmEd44r0DGNKDtsqxaAz0HxQw==",
+        "dependencies": {
+          "OpenTelemetry.Api": "[1.15.3, 2.0.0)"
+        }
+      },
+      "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"
+        }
+      },
+      "gmrelay.servicedefaults": {
+        "type": "Project",
+        "dependencies": {
+          "Microsoft.Extensions.Http.Resilience": "[10.2.0, )",
+          "Microsoft.Extensions.ServiceDiscovery": "[10.2.0, )",
+          "OpenTelemetry.Exporter.OpenTelemetryProtocol": "[1.15.3, )",
+          "OpenTelemetry.Extensions.Hosting": "[1.15.3, )",
+          "OpenTelemetry.Instrumentation.AspNetCore": "[1.15.2, )",
+          "OpenTelemetry.Instrumentation.Http": "[1.15.1, )",
+          "OpenTelemetry.Instrumentation.Runtime": "[1.15.1, )"
+        }
+      },
+      "gmrelay.shared": {
+        "type": "Project",
+        "dependencies": {
+          "Dapper": "[2.1.72, )",
+          "Npgsql": "[10.0.2, )"
+        }
+      }
+    }
+  }
+}

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

@@ -0,0 +1,69 @@
+using System.IO;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordListSessionsHandlerTests
+{
+    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 Handler_ShouldExist()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordListSessionsHandler.cs");
+
+        Assert.True(File.Exists(handlerPath), "DiscordListSessionsHandler should exist.");
+    }
+
+    [Fact]
+    public void Handler_ShouldQueryByPlatformAndExternalGroupId()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordListSessionsHandler.cs");
+        var handler = File.ReadAllText(handlerPath);
+
+        Assert.Contains("platform = 'Discord'", handler, StringComparison.Ordinal);
+        Assert.Contains("external_group_id = @GuildId", handler, StringComparison.Ordinal);
+        Assert.Contains("scheduled_at > NOW()", handler, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldNotContainTelegramSpecificColumns()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordListSessionsHandler.cs");
+        var handler = File.ReadAllText(handlerPath);
+
+        Assert.DoesNotContain("telegram_chat_id", handler, StringComparison.Ordinal);
+        Assert.DoesNotContain("telegram_id", handler, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Command_ShouldExist()
+    {
+        var repoRoot = GetRepoRoot();
+        var commandPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordListSessionsCommand.cs");
+
+        Assert.True(File.Exists(commandPath), "DiscordListSessionsCommand should exist.");
+    }
+
+    [Fact]
+    public void Command_ShouldBeSlashCommandModule()
+    {
+        var repoRoot = GetRepoRoot();
+        var commandPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordListSessionsCommand.cs");
+        var command = File.ReadAllText(commandPath);
+
+        Assert.Contains("SlashCommand", command, StringComparison.Ordinal);
+        Assert.Contains("listsessions", command, StringComparison.Ordinal);
+    }
+}

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

@@ -0,0 +1,144 @@
+using GmRelay.DiscordBot.Features.Sessions;
+
+namespace GmRelay.Bot.Tests.Discord;
+
+public sealed class DiscordNewSessionHandlerTests
+{
+    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");
+    }
+
+    // --- Runtime tests for ParseTimeInput (static, no DB) ---
+
+    [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);
+    }
+
+    // --- Source-level structural tests ---
+
+    [Fact]
+    public void Handler_ShouldExist()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        Assert.True(File.Exists(handlerPath), "DiscordNewSessionHandler should exist.");
+    }
+
+    [Fact]
+    public void Handler_ShouldUseDapperForDatabaseAccess()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.Contains("QueryAsync", source, StringComparison.Ordinal);
+        Assert.Contains("ExecuteAsync", source, StringComparison.Ordinal);
+        Assert.Contains("ExecuteScalarAsync", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldUseNpgsqlDataSource()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.Contains("NpgsqlDataSource", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldCheckPermissionsViaPermissionChecker()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.Contains("CanManageSchedule", source, StringComparison.Ordinal);
+        Assert.Contains("UnauthorizedAccessException", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldBePlatformNeutral()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.DoesNotContain("telegram_chat_id", source, StringComparison.Ordinal);
+        Assert.DoesNotContain("telegram_id", source, StringComparison.Ordinal);
+        Assert.Contains("platform = 'Discord'", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldUseTransactions()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.Contains("BeginTransactionAsync", source, StringComparison.Ordinal);
+        Assert.Contains("CommitAsync", source, StringComparison.Ordinal);
+        Assert.Contains("RollbackAsync", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Handler_ShouldRespectCancellationToken()
+    {
+        var repoRoot = GetRepoRoot();
+        var handlerPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionHandler.cs");
+        var source = File.ReadAllText(handlerPath);
+
+        Assert.Contains("CancellationToken", source, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void Command_ShouldRenderEmbedOnSuccess()
+    {
+        var repoRoot = GetRepoRoot();
+        var commandPath = Path.Combine(repoRoot, "src", "GmRelay.DiscordBot", "Features", "Sessions", "DiscordNewSessionCommand.cs");
+        var source = File.ReadAllText(commandPath);
+
+        Assert.Contains("DiscordSessionBatchRenderer.Render", source, StringComparison.Ordinal);
+        Assert.Contains("WithEmbeds", source, StringComparison.Ordinal);
+    }
+}

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

@@ -0,0 +1,28 @@
+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();
+    }
+}

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

@@ -0,0 +1,72 @@
+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,
+            dbManagerUserIds: Array.Empty<ulong>(),
+            resolvedPermissions: 0);
+
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void CanManageSchedule_WhenUserHasAdministratorPermission_ReturnsTrue()
+    {
+        var checker = new DiscordPermissionChecker();
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: 987654321ul,
+            dbManagerUserIds: Array.Empty<ulong>(),
+            resolvedPermissions: 0x8); // Administrator
+
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void CanManageSchedule_WhenUserIsDbManager_ReturnsTrue()
+    {
+        var checker = new DiscordPermissionChecker();
+        var managerId = 555ul;
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: managerId,
+            dbManagerUserIds: new[] { managerId },
+            resolvedPermissions: 0);
+
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void CanManageSchedule_WhenRegularUser_ReturnsFalse()
+    {
+        var checker = new DiscordPermissionChecker();
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: 111ul,
+            dbManagerUserIds: new[] { 222ul },
+            resolvedPermissions: 0);
+
+        Assert.False(result);
+    }
+
+    [Fact]
+    public void CanManageSchedule_WhenUserHasOtherPermissionButNotAdmin_ReturnsFalse()
+    {
+        var checker = new DiscordPermissionChecker();
+        var result = checker.CanManageSchedule(
+            guildOwnerId: 123456789ul,
+            userId: 111ul,
+            dbManagerUserIds: Array.Empty<ulong>(),
+            resolvedPermissions: 0x4); // ManageServer, not Administrator
+
+        Assert.False(result);
+    }
+}

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

@@ -0,0 +1,51 @@
+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_ShouldAcceptRestClientAndReplyCache()
+    {
+        var constructor = typeof(DiscordPlatformMessenger).GetConstructor(new[]
+        {
+            typeof(NetCord.Rest.RestClient),
+            typeof(DiscordInteractionReplyCache)
+        });
+        Assert.NotNull(constructor);
+    }
+
+    [Fact]
+    public void DiscordPlatformMessenger_ShouldImplementIPlatformMessenger()
+    {
+        Assert.True(typeof(IPlatformMessenger).IsAssignableFrom(typeof(DiscordPlatformMessenger)));
+    }
+
+    [Fact]
+    public async Task AnswerInteractionAsync_ShouldStoreReplyForComponentModule()
+    {
+        var source = await ReadRepositoryFileAsync("src/GmRelay.DiscordBot/Infrastructure/Discord/DiscordPlatformMessenger.cs");
+
+        Assert.Contains("DiscordInteractionReplyCache", source, StringComparison.Ordinal);
+        Assert.Contains("interactionReplies.Store(reply)", 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}'.");
+    }
+}