Merge pull request #104: refactor: завершить platform migration и удалить deprecated telegram_* scaffolding

- Migrated all core domain SQL from telegram_* columns to platform + external_*
- Added V024/V025 migrations with backfill and deprecation comments
- Removed all COALESCE(external_*, telegram_*) fallbacks
- Replaced gm_telegram_id join with group_managers query in HandleRsvpHandler
- Updated Bot, Web, DiscordBot, and Shared handlers
- Bumped version to 3.1.0

CI run #265 passed (289 tests, 0 warnings, 0 vulnerabilities)

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

.env.example

@@ -10,8 +10,26 @@ TELEGRAM_BOT_USERNAME=YOUR_BOT_USERNAME_HERE
 # Используется ботом для кнопки меню Telegram и кнопки /start.
 TELEGRAM_MINI_APP_URL=
 
+# Токен Discord application bot
+# Можно получить в Discord Developer Portal (https://discord.com/developers/applications)
+DISCORD_BOT_TOKEN=YOUR_DISCORD_BOT_TOKEN_HERE
+
+# Discord OAuth (для Web Dashboard)
+# Client ID и Secret из OAuth2 раздела Discord Developer Portal
+# Redirect URI должен указывать на /auth/discord/callback вашего домена
+DISCORD_CLIENT_ID=YOUR_DISCORD_CLIENT_ID_HERE
+DISCORD_CLIENT_SECRET=YOUR_DISCORD_CLIENT_SECRET_HERE
+DISCORD_REDIRECT_URI=https://your-domain.example/auth/discord/callback
+
 # Пароль для базы данных PostgreSQL
 POSTGRES_PASSWORD=StrongPasswordForDatabase
 
 # Локальный порт веб-интерфейса GM-Relay
 GMRELAY_WEB_PORT=8080
+
+# === Backup ===
+# Сколько дней хранить дампы PostgreSQL (default: 7)
+BACKUP_RETENTION_DAYS=7
+
+# Имя Docker volume для резервных копий БД
+BACKUP_VOLUME_NAME=game_pgbackups

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 1.10.4
+  VERSION: 3.1.0
 
 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:${{ env.VERSION }}
+
   # ЧАСТЬ 2: Запускаем эти образы на самом сервере
   deploy:
-    needs: build-and-push
+    needs: scan-images
     runs-on: ubuntu-latest # Тот же локальный раннер
     steps:
       - name: Checkout repository
@@ -63,16 +110,50 @@ jobs:
         run: |
           echo "TELEGRAM_BOT_TOKEN=${{ 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
+          echo "DISCORD_CLIENT_ID=${{ secrets.DISCORD_CLIENT_ID }}" >> .env
+          echo "DISCORD_CLIENT_SECRET=${{ secrets.DISCORD_CLIENT_SECRET }}" >> .env
+          echo "DISCORD_REDIRECT_URI=${{ secrets.DISCORD_REDIRECT_URI }}" >> .env
 
       - name: Deploy Containers
         run: |
           # Авторизуемся локальным докером в нашей Gitea
           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
+
+          # Ждём, пока сервисы перейдут в healthy или упадут
+          SERVICES="bot discord web"
+          MAX_WAIT=40
+          INTERVAL=5
+          ELAPSED=0
+
+          while [ $ELAPSED -lt $MAX_WAIT ]; do
+            NOT_HEALTHY=0
+            for svc in $SERVICES; do
+              HEALTH=$(docker compose ps $svc --format="{{.Health}}" 2>/dev/null | head -n1)
+              if [ "$HEALTH" != "healthy" ]; then
+                STATE=$(docker compose ps $svc --format="{{.State}}" 2>/dev/null | head -n1)
+                echo "❌ $svc not healthy yet (state: ${STATE:-unknown})"
+                NOT_HEALTHY=$((NOT_HEALTHY + 1))
+              fi
+            done
+
+            if [ $NOT_HEALTHY -eq 0 ]; then
+              echo "✅ All services are healthy!"
+              exit 0
+            fi
+
+            sleep $INTERVAL
+            ELAPSED=$((ELAPSED + INTERVAL))
+          done
+
+          echo "⏰ Timed out waiting for services to become healthy"
+          docker compose ps
+          exit 1

.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>1.10.4</Version>
+    <Version>3.1.0</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.

PR_DESCRIPTION.md

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

README.md

@@ -1,10 +1,10 @@
 # 🎲 GM-Relay: TTRPG Session Scheduling Bot & Web Dashboard
 
-**GM-Relay** — это комплексное решение для Мастеров Подземелий (ГМов), состоящее из высокопроизводительного Telegram-бота и удобного веб-интерфейса. Предназначено для автоматизации записи игроков на сессии, управления расписанием и проведения игр.
+**GM-Relay** — это комплексное решение для Мастеров Подземелий (ГМов), состоящее из высокопроизводительного Telegram-бота, Discord worker и удобного веб-интерфейса. Предназначено для автоматизации записи игроков на сессии, управления расписанием и проведения игр.
 
 Проект разработан с упором на производительность, архитектуру Vertical Slice, Native AOT (для бота) и удобство развертывания с использованием .NET Aspire.
 
-**Текущая версия:** `v1.10.2`.
+**Текущая версия:** `v2.8.0`.
 
 ---
 
@@ -16,13 +16,21 @@
 - **⚡ 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.
 - **🕐 Режим уведомлений batch**: Для каждой пачки можно выбрать `В группе и в личку` или `Только в группе`.
 - **⬆️ Управление очередью**: Веб-интерфейс показывает заполненность, лист ожидания и позволяет ГМу поднять первого игрока из очереди.
-- **🔄 Автоматическая синхронизация**: Любые изменения в веб-интерфейсе мгновенно обновляют сообщения с расписанием в Telegram-чатах игроков.
+- **🔄 Автоматическая синхронизация**: Любые изменения в веб-интерфейсе мгновенно обновляют сообщения с расписанием в подключенных Telegram- и Discord-каналах.
+
+### Discord Bot
+- **Slash-команды `/newsession` и `/listsessions`**: GM создаёт сессии и публикует актуальное расписание прямо в Discord-канале.
+- **Кнопки Join/Leave с ephemeral-ответами**: игроки нажимают Join/Leave в Discord-сообщении; бот отвечает ephemeral-сообщением и обновляет schedule message.
+- **RSVP (подтверждения) за 24ч до сессии**: scheduler публикует запрос подтверждения в Discord-канале, игроки отвечают кнопками, а GM получает итоги RSVP.
+- **DM-напоминания за 1ч и ссылки перед игрой**: one-hour reminders и join-link notifications отправляются в Discord DM при включённых личных уведомлениях; сбои DM логируются без публичного fallback.
+- **Reschedule voting (голосование за перенос)**: deadline-сервис обновляет Discord vote message и schedule message через `IPlatformMessenger`.
+- **Лимиты и waitlist**: при заполненном составе игрок попадает в waitlist, а при выходе участника первый ожидающий автоматически продвигается в основной состав.
 
 ### 🌐 Web Dashboard (Blazor Server)
 - **🔐 Авторизация через Telegram**: Telegram Login Widget с HMAC-SHA256 валидацией.
@@ -37,7 +45,7 @@
 - **⬆️ Управление очередью**: Заполненность, лист ожидания и ручное повышение игрока из очереди.
 - **📜 История изменений сессий**: Страница `/session/{id}/history` показывает аудит-лог всех значимых изменений (время, ссылка, название, участники, статус) с указанием акторов и дат.
 - **📊 Статистика посещаемости**: Страница `/group/{id}/stats` показывает долю присутствия, количество пропусков и среднюю явку по каждому игроку группы.
-- **🔄 Автосинхронизация**: Изменения в вебе мгновенно перерисовывают Telegram-сообщения расписания.
+- **🔄 Автосинхронизация**: Изменения в вебе мгновенно перерисовывают platform message расписания через `IPlatformMessenger`.
 
 ---
 
@@ -47,7 +55,7 @@
 |---|---|
 | 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 внутри `GmRelay.Bot`) |
 | Веб | Blazor Server |
 | Оркестрация | .NET Aspire (`GmRelay.AppHost`) |
 | БД | PostgreSQL |
@@ -74,6 +82,14 @@ 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
+
+# Discord OAuth (для Web Dashboard)
+DISCORD_CLIENT_ID=ваш_discord_client_id_здесь
+DISCORD_CLIENT_SECRET=ваш_discord_client_secret_здесь
+DISCORD_REDIRECT_URI=https://your-domain.example/auth/discord/callback
+
 # Имя бота без @ (для Telegram Login Widget)
 TELEGRAM_BOT_USERNAME=ваше_имя_бота_здесь
 
@@ -98,12 +114,53 @@ docker compose up -d
 - создание Docker-сети и volume PostgreSQL;
 - подъём PostgreSQL (`db:5432`);
 - запуск бота с плавной миграцией (DbUp);
+- запуск Discord Gateway worker на NetCord (healthcheck на `:8082`);
 - 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`. Скопируйте `DISCORD_BOT_TOKEN` в `.env`; `DISCORD_CLIENT_ID`, `DISCORD_CLIENT_SECRET` и `DISCORD_REDIRECT_URI` нужны только для входа в Web Dashboard через Discord.
+5. Перезапустите Docker Compose (`docker compose up -d`), а затем в Discord создайте сессию через `/newsession` или опубликуйте расписание через `/listsessions`; игроки записываются и выходят кнопками в опубликованном сообщении.
+
+## 💾 Backup и восстановление
+
+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
+```
 
 ---
 
@@ -112,12 +169,10 @@ docker compose up -d
 ```
 ├── src/
 │   ├── GmRelay.AppHost/         # .NET Aspire orchestrator
-│   ├── GmRelay.Bot/             # Telegram-бот (Native AOT)
-│   ├── GmRelay.Migrator/        # DbUp-миграции
+│   ├── GmRelay.Bot/             # Telegram- и Discord-бот (Native AOT + NetCord Gateway worker)
 │   ├── 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)
@@ -126,6 +181,16 @@ docker compose up -d
 
 ---
 
+## 👨‍💻 Для разработчиков
+
+- **Архитектура**: проект следует Vertical Slice с явным DI. Подробности — в [ADR-001](docs/adr/0001-use-vertical-slice-native-aot-and-aspire.md) и [ADR-002](docs/adr/002-platform-neutral-batch-rendering.md).
+- **Добавление обработчика**: из-за Native AOT все DI-регистрации выполняются вручную в `src/GmRelay.Bot/Program.cs` (assembly scanning не используется).
+- **Миграции**: SQL-скрипты добавляются как embedded resources в `src/GmRelay.Bot/Migrations/` и применяются автоматически при старте бота через DbUp.
+- **Тесты**: `dotnet test tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj --verbosity normal`
+- **Сборка**: `dotnet build`
+
+---
+
 ## 📜 Лицензия
 
 MIT License. См. [LICENSE](./LICENSE).

RELEASE_NOTES.md

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

compose.yaml

@@ -16,8 +16,40 @@ services:
       timeout: 3s
       retries: 10
 
+  db-backup:
+    image: postgres:17-alpine
+    restart: unless-stopped
+    depends_on:
+      db:
+        condition: service_healthy
+    environment:
+      POSTGRES_USER: gmrelay
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}
+      POSTGRES_DB: gmrelay_db
+      PGPASSWORD: ${POSTGRES_PASSWORD:?Set POSTGRES_PASSWORD in .env}
+      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+    volumes:
+      - pgbackups:/backups
+    networks:
+      - gmrelay
+    entrypoint: ["sh", "-c"]
+    command:
+      - |
+        cat > /usr/local/bin/backup.sh << 'EOF'
+        #!/bin/sh
+        set -e
+        TMPFILE="/tmp/backup_$$.sql"
+        pg_dump -h db -U gmrelay -d gmrelay_db > "$TMPFILE"
+        gzip "$TMPFILE"
+        mv "$TMPFILE.gz" "/backups/gmrelay_db_$(date +%Y%m%d_%H%M%S).sql.gz"
+        find /backups -name 'gmrelay_db_*.sql.gz' -type f -mtime +${BACKUP_RETENTION_DAYS} -delete
+        EOF
+        chmod +x /usr/local/bin/backup.sh
+        echo "0 3 * * * /usr/local/bin/backup.sh" | crontab -
+        crond -f
+
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:1.10.4
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:3.1.0
     restart: always
     depends_on:
       db:
@@ -28,9 +60,31 @@ services:
       - "Telegram__MiniAppUrl=${TELEGRAM_MINI_APP_URL:-}"
     networks:
       - gmrelay
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8081/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+
+  discord:
+    image: git.codeanddice.ru/toutsu/gmrelay-discord-bot:3.1.0
+    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
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8082/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
 
   web:
-    image: git.codeanddice.ru/toutsu/gmrelay-web:1.10.4
+    image: git.codeanddice.ru/toutsu/gmrelay-web:3.1.0
     restart: always
     depends_on:
       db:
@@ -40,18 +94,28 @@ services:
       - "Telegram__BotToken=${TELEGRAM_BOT_TOKEN:?Set TELEGRAM_BOT_TOKEN in .env}"
       - "Telegram__BotUsername=${TELEGRAM_BOT_USERNAME:?Set TELEGRAM_BOT_USERNAME in .env}"
       - "Telegram__MiniAppUrl=${TELEGRAM_MINI_APP_URL:-}"
+      - "Discord__ClientId=${DISCORD_CLIENT_ID:-}"
+      - "Discord__ClientSecret=${DISCORD_CLIENT_SECRET:-}"
+      - "Discord__RedirectUri=${DISCORD_REDIRECT_URI:-}"
     ports:
       - "${GMRELAY_WEB_PORT:-8080}:8080"
     volumes:
       - web_keys:/app/dataprotection-keys
     networks:
       - gmrelay
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8080/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
 
 volumes:
   pgdata:
     name: ${POSTGRES_VOLUME_NAME:-game_pgdata}
   web_keys:
     name: ${WEB_KEYS_VOLUME_NAME:-gmrelay_web_keys}
+  pgbackups:
+    name: ${BACKUP_VOLUME_NAME:-game_pgbackups}
 
 networks:
   gmrelay:

docs/adr/0001-use-vertical-slice-native-aot-and-aspire.md

@@ -56,8 +56,18 @@ Aspire обеспечивает:
 - Service discovery и передачу connection strings.
 - OpenTelemetry (traces, metrics, logs) из коробки.
 - Aspire Dashboard для мониторинга.
+- **Три сервиса:** Bot (Telegram long polling + Discord Gateway), Web, PostgreSQL.
 
-### 5. Telegram.Bot 22.x + Long Polling
+### 5. Discord Gateway + NetCord
+
+Discord-интеграция реализована через NetCord Gateway (не DSharpPlus) из-за:
+- Нативной совместимости с .NET 10 и минимального размера зависимостей.
+- Gateway events маршрутизируются в те же vertical slice handlers, что и Telegram updates.
+- Slash-команды регистрируются через NetCord `ApplicationCommandService`.
+
+Ephemeral-ответы (кнопки Join/Leave/RSVP) используют `InteractionMessageProperties` с `Flags = MessageFlags.Ephemeral`.
+
+### 6. Telegram.Bot 22.x + Long Polling
 
 - Long Polling — единственный вариант для Pi за NAT.
 - Telegram.Bot поддерживает `System.Text.Json` source generators для AOT.

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

@@ -30,7 +30,7 @@ SessionBatchViewModel (platform-neutral)
     │
     ├──► TelegramSessionBatchRenderer ──► HTML + InlineKeyboardMarkup
     │
-    └──► DiscordSessionBatchRenderer ──► (issue #26)
+    └──► DiscordSessionBatchRenderer ──► Discord embeds + buttons
 ```
 
 ### Изменённые компоненты
@@ -41,7 +41,7 @@ SessionBatchViewModel (platform-neutral)
 | `SessionBatchViewBuilder` | — | `GmRelay.Shared.Rendering` |
 | `SessionBatchViewModel` | — | `GmRelay.Shared.Rendering` |
 | `TelegramSessionBatchRenderer` | — | `GmRelay.Bot` + `GmRelay.Web` |
-| `DiscordSessionBatchRenderer` | — | `GmRelay.Shared.Rendering` (stub) |
+| `DiscordSessionBatchRenderer` | — | `GmRelay.DiscordBot.Rendering` |
 | `BatchMessageEditor` | `GmRelay.Shared.Rendering` | `GmRelay.Bot` + `GmRelay.Web` |
 
 ## Consequences
@@ -49,7 +49,7 @@ SessionBatchViewModel (platform-neutral)
 ### Positive
 
 - `GmRelay.Shared` больше не зависит от `Telegram.Bot`. Чистый platform-agnostic проект.
-- Можно добавить `DiscordSessionBatchRenderer` без изменений в `Shared`.
+- Discord renderer lives in `GmRelay.DiscordBot`, so NetCord stays out of `Shared`.
 - Unit-тесты ViewBuilder не создают `InlineKeyboardMarkup`.
 - Логика подсчёта игроков, сортировки сессий и генерации действий — в одном месте (ViewBuilder).
 
@@ -62,4 +62,8 @@ SessionBatchViewModel (platform-neutral)
 
 - Issue #22 — этот рефакторинг.
 - Issue #26 — Discord Bot MVP (потребитель новой архитектуры).
+- Issue #30 — Discord reschedule voting использует `IPlatformMessenger`.
+- Issue #31 — scheduler notifications и reschedule deadline updates через `IPlatformMessenger`.
+- Issue #32 — compose wiring для Discord bot (healthcheck :8082).
+- Issue #33 — регрессионные тесты platform rendering (Telegram + Discord).
 - ADR 001 — vertical slice, native AOT, Aspire (`docs/adr/0001-use-vertical-slice-native-aot-and-aspire.md`).

docs/adr/003-discord-integration-architecture.md

@@ -0,0 +1,57 @@
+# ADR 003: Discord Integration Architecture
+
+## Status
+
+**Accepted** — implemented in v2.6.0 (PR #87, issue #30).
+
+## Context
+
+После Telegram-бота требовалась поддержка Discord для кросс-платформенных групп. Нужно было выбрать:
+1. Библиотеку для Discord API (NetCord vs DSharpPlus vs Discord.NET).
+2. Модель runtime (отдельный процесс vs тот же Worker).
+3. Способ обработки интеракций (Gateway events vs HTTP interactions).
+
+## Decision
+
+### 1. NetCord (не DSharpPlus, не Discord.NET)
+
+- **NetCord** — лёгкий, AOT-compatible, minimal dependencies.
+- **DSharpPlus** — слишком тяжёлый, много зависимостей, reflection-heavy.
+- **Discord.NET** — несовместим с Native AOT (heavy reflection, dynamic IL).
+
+### 2. Gateway Events внутри GmRelay.Bot
+
+- Discord Gateway worker живёт **внутри** `GmRelay.Bot` (тот же Worker Service), а не как отдельный проект.
+- Это упрощает DI, shared DB connection, shared `IPlatformMessenger`.
+- Для масштабирования можно вынести в отдельный контейнер позже.
+
+### 3. Slash-команды через NetCord ApplicationCommandService
+
+- Регистрация глобальных slash-команд (`/newsession`, `/listsessions`) через `ApplicationCommandService`.
+- Команды мапятся на vertical slice handlers через `DiscordSessionInteractionModule`.
+
+### 4. Ephemeral Replies
+
+- Все кнопки (Join/Leave/RSVP) отвечают ephemeral (`MessageFlags.Ephemeral`).
+- Schedule message редактируется через `DiscordPlatformMessenger` (реализация `IPlatformMessenger`).
+
+## Consequences
+
+### Positive
+
+- Один бинарник для Telegram + Discord.
+- Shared DI, shared DB pool, shared domain logic.
+- Native AOT совместимость.
+
+### Negative
+
+- Gateway connection требует persistent WebSocket — при разрыве происходит reconnect.
+- Discord rate limits агрессивнее Telegram — нужен backoff.
+
+## Related
+
+- Issue #30 — reschedule voting (кнопки + дедлайн).
+- Issue #31 — scheduler notifications через `IPlatformMessenger`.
+- Issue #32 — compose wiring + healthcheck.
+- ADR 001 — Vertical Slice, Native AOT, Aspire.
+- ADR 002 — Platform-Neutral Rendering.

docs/c4-system-context.md

@@ -1,4 +1,4 @@
-# GM-Relay — C4 Model
+# GM-Relay - C4 Model
 
 ## Level 1: System Context
 
@@ -6,19 +6,24 @@
 C4Context
     title GM-Relay System Context
 
-    Person(gm, "Game Master", "Создаёт сессии, управляет расписанием игр")
-    Person(player, "Player", "Подтверждает участие через inline-кнопки")
+    Person(gm, "Game Master", "Creates sessions and manages schedules")
+    Person(player, "Player", "Joins, leaves, confirms, and receives reminders")
 
-    System(gmrelay, "GM-Relay Bot", "Telegram Worker Service на Raspberry Pi. Управляет подтверждениями, рассылает напоминания и ссылки.")
+    System(gmrelay, "GM-Relay", "Telegram bot, Discord worker, web dashboard, and shared scheduling logic")
 
-    System_Ext(telegram, "Telegram Bot API", "Long Polling. Сообщения, inline keyboards, callback queries.")
-    SystemDb_Ext(postgres, "PostgreSQL", "Сессии, игроки, RSVP-статусы")
+    System_Ext(telegram, "Telegram Bot API", "Commands, inline keyboards, callback queries, Mini App entry points")
+    System_Ext(discord, "Discord Gateway and REST API", "Slash commands, button interactions, message edits, ephemeral replies")
+    SystemDb_Ext(postgres, "PostgreSQL", "Sessions, players, participants, groups, platform identities")
 
-    Rel(gm, telegram, "Команды бота (/newsession)")
-    Rel(player, telegram, "Нажимает кнопки (✅ Буду / ❌ Не смогу)")
-    Rel(telegram, gmrelay, "Updates (Long Polling)")
+    Rel(gm, telegram, "Creates and manages sessions")
+    Rel(gm, discord, "Uses /newsession and /listsessions")
+    Rel(player, telegram, "Uses inline buttons")
+    Rel(player, discord, "Uses Join/Leave and RSVP buttons")
+    Rel(telegram, gmrelay, "Updates via long polling")
+    Rel(discord, gmrelay, "Gateway events and component interactions")
     Rel(gmrelay, telegram, "SendMessage, EditMessage, AnswerCallbackQuery")
-    Rel(gmrelay, postgres, "SQL (Npgsql + Dapper)")
+    Rel(gmrelay, discord, "Send/edit schedule, RSVP, reminder, and reschedule messages")
+    Rel(gmrelay, postgres, "SQL via Npgsql and Dapper")
 ```
 
 ## Level 2: Container
@@ -30,49 +35,89 @@ 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, "Discord Gateway Worker", "Внутри GmRelay.Bot", "NetCord Gateway, slash commands, scheduler notifications, button interactions, healthcheck :8082")
+        Container(web, "GmRelay.Web", "Blazor Server", "Dashboard, Mini App pages, editing and stats")
+        Container(shared, "GmRelay.Shared", ".NET library", "Shared domain models, rendering, scheduler, and platform-neutral handlers")
+        ContainerDb(db, "PostgreSQL", "Database", "sessions, players, session_participants, game_groups, platform identities")
     }
 
     System_Ext(telegram, "Telegram Bot API")
+    System_Ext(discord, "Discord Gateway and REST API")
 
     Rel(gm, telegram, "Commands")
-    Rel(player, telegram, "Callback Queries")
-    Rel(telegram, bot, "GetUpdates (Long Polling)")
+    Rel(gm, discord, "Slash commands")
+    Rel(player, telegram, "Callback queries")
+    Rel(player, discord, "Button interactions")
+    Rel(telegram, bot, "GetUpdates")
+    Rel(discord, discordBot, "Gateway events")
     Rel(bot, telegram, "Bot API calls")
+    Rel(discordBot, discord, "REST send/edit/reply calls")
+    Rel(bot, shared, "Uses shared renderers and join/leave handlers")
+    Rel(discordBot, shared, "Uses shared renderers, scheduler, and platform-neutral handlers")
+    Rel(web, shared, "Uses shared domain and rendering models")
     Rel(bot, db, "Npgsql + Dapper.AOT")
+    Rel(discordBot, db, "Npgsql + Dapper")
+    Rel(web, db, "Npgsql + Dapper")
 ```
 
-## Level 3: Component (GmRelay.Bot)
+## Level 3: Component - Session Interactions
 
 ```mermaid
 C4Component
-    title GmRelay.Bot Components
+    title Platform-Neutral Session Interactions
 
-    Container_Boundary(bot, "GmRelay.Bot") {
-        Component(polling, "TelegramBotService", "BackgroundService", "Long polling loop, получает Updates")
-        Component(router, "UpdateRouter", "C#", "Маршрутизирует Update → Handler по типу")
-        Component(scheduler, "SessionSchedulerService", "BackgroundService", "PeriodicTimer(60s): T-24ч и T-5мин триггеры")
-        Component(migrator, "DbMigrator", "DbUp", "SQL миграции при старте")
-
-        Component(confirm, "SendConfirmationHandler", "Feature", "Отправляет inline keyboard за 24ч")
-        Component(rsvp, "HandleRsvpHandler", "Feature", "Обрабатывает ✅/❌, проверяет all-confirmed")
-        Component(link, "SendJoinLinkHandler", "Feature", "Отправляет join link за 5 мин")
+    Container_Boundary(shared, "GmRelay.Shared") {
+        Component(join, "JoinSessionHandler", "Feature handler", "Adds players as Active or Waitlisted with session row locking")
+        Component(leave, "LeaveSessionHandler", "Feature handler", "Removes players and promotes the first waitlisted player when capacity allows")
+        Component(rsvp, "HandleRsvpHandler", "Feature handler", "Updates RSVP state and emits platform-neutral RSVP outcomes")
+        Component(scheduler, "SessionSchedulerService", "Background service", "Triggers confirmation, reminder, and join-link notifications per platform")
+        Component(updateLock, "ScheduleMessageUpdateLock", "In-memory keyed lock", "Serializes DB changes and schedule message edits per platform message")
+        Component(renderer, "SessionBatchViewBuilder", "Renderer model builder", "Builds platform-neutral schedule views and actions")
     }
 
-    System_Ext(telegram, "Telegram Bot API")
-    ContainerDb(db, "PostgreSQL")
+    Component(healthCheck, "DiscordHealthCheckHostedService", ":8082", "Healthcheck для Docker Compose")
 
-    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(discordBot, "GmRelay.DiscordBot") {
+        Component(discordModule, "DiscordSessionInteractionModule", "NetCord component module", "Maps join_session/leave_session/rsvp buttons to neutral commands")
+        Component(discordMessenger, "DiscordPlatformMessenger", "IPlatformMessenger", "Sends and edits Discord schedule, RSVP, reminder, join-link, and reschedule messages")
+    }
+
+    Container_Boundary(bot, "GmRelay.Bot") {
+        Component(updateRouter, "UpdateRouter", "Telegram adapter", "Maps callback queries to neutral commands")
+        Component(telegramMessenger, "TelegramPlatformMessenger", "IPlatformMessenger", "Sends and edits Telegram schedule, RSVP, reminder, join-link, and reschedule messages")
+    }
+
+    ContainerDb(db, "PostgreSQL")
+    System_Ext(telegram, "Telegram Bot API")
+    System_Ext(discord, "Discord Gateway and REST API")
+
+    Rel(discord, discordModule, "Button interaction")
+    Rel(discordModule, join, "JoinSessionCommand")
+    Rel(discordModule, leave, "LeaveSessionCommand")
+    Rel(discordModule, rsvp, "HandleRsvpCommand")
+    Rel(discordModule, discord, "Deferred ephemeral reply, then modify response")
+    Rel(updateRouter, join, "JoinSessionCommand")
+    Rel(updateRouter, leave, "LeaveSessionCommand")
+    Rel(updateRouter, rsvp, "HandleRsvpCommand")
+    Rel(join, updateLock, "Acquire by PlatformMessageRef")
+    Rel(leave, updateLock, "Acquire by PlatformMessageRef")
+    Rel(join, db, "SELECT FOR UPDATE, INSERT participant")
+    Rel(leave, db, "SELECT FOR UPDATE, DELETE/promote participant")
+    Rel(rsvp, db, "Update RSVP and load notification recipients")
+    Rel(scheduler, db, "Load due session triggers")
+    Rel(join, renderer, "Build updated schedule view")
+    Rel(leave, renderer, "Build updated schedule view")
+    Rel(join, discordMessenger, "Update Discord schedule when command is Discord")
+    Rel(leave, discordMessenger, "Update Discord schedule when command is Discord")
+    Rel(join, telegramMessenger, "Update Telegram schedule when command is Telegram")
+    Rel(leave, telegramMessenger, "Update Telegram schedule when command is Telegram")
+    Rel(rsvp, discordMessenger, "Update Discord confirmation and outcomes")
+    Rel(rsvp, telegramMessenger, "Update Telegram confirmation and outcomes")
+    Rel(scheduler, discordMessenger, "Send Discord scheduler notifications")
+    Rel(scheduler, telegramMessenger, "Send Telegram scheduler notifications")
+    Rel(discordMessenger, discord, "REST send/edit/DM + ephemeral text")
+    Rel(telegramMessenger, telegram, "SendMessage/EditMessage + AnswerCallbackQuery")
+    Rel(healthCheck, discord, "HTTP /health")
 ```

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

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

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

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

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

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

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, )",
+        "resolved": "13.2.1",
+        "contentHash": "7F/nmeplR9cYE/B/E1haRjnkoBRQ/voMXpnK/SNJoXSFs4Vb/g00CDDvI/xfH3SAV7Xq8ekWa9ZbX56JuQ+YiA==",
+        "dependencies": {
+          "AspNetCore.HealthChecks.NpgSql": "9.0.0",
+          "AspNetCore.HealthChecks.Uris": "9.0.0",
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+        "dependencies": {
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+        "dependencies": {
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+          "Nerdbank.Streams": "2.12.87",
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+      }
+    }
+  }
+}

src/GmRelay.Bot/Dockerfile

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

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

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

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

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

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

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

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

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

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

@@ -1,10 +1,9 @@
 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>(
             """
@@ -42,22 +42,23 @@ public sealed class CancelSessionHandler(
                        FROM group_managers gm
                        JOIN players p ON p.id = gm.player_id
                        WHERE gm.group_id = s.group_id
-                         AND p.telegram_id = @TelegramUserId
+                         AND p.platform = 'Telegram'
+                         AND p.external_user_id = @ExternalUserId
                    ) AS CanManage
             FROM sessions s
             WHERE s.id = @SessionId
             """,
-            new { command.SessionId, command.TelegramUserId }, transaction);
+            new { command.SessionId, ExternalUserId = command.TelegramUserId.ToString() }, transaction);
 
         if (session == null)
         {
-            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;
         }
 
@@ -69,7 +70,7 @@ public sealed class CancelSessionHandler(
 
         // 3. Загружаем весь батч для перерисовки
         var batchSessions = await connection.QueryAsync<SessionBatchDto>(
-            @"SELECT id as SessionId, scheduled_at as ScheduledAt, status as Status, max_players as MaxPlayers
+            @"SELECT id as SessionId, scheduled_at as ScheduledAt, status as Status, max_players as MaxPlayers, join_link as JoinLink
               FROM sessions
               WHERE batch_id = @BatchId
               ORDER BY scheduled_at",
@@ -89,7 +90,7 @@ public sealed class CancelSessionHandler(
 
         var directRecipients = (await connection.QueryAsync<DirectNotificationRecipient>(
             """
-            SELECT p.telegram_id AS TelegramId,
+            SELECT p.external_user_id::BIGINT AS TelegramId,
                    p.display_name AS DisplayName
             FROM session_participants sp
             JOIN players p ON sp.player_id = p.id
@@ -104,22 +105,24 @@ 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 +138,10 @@ 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

@@ -77,13 +77,15 @@ public sealed class CreateSessionHandler(
         {
             await connection.ExecuteAsync(
                 """
-                INSERT INTO players (telegram_id, display_name, telegram_username)
-                VALUES (@TgId, @Name, @Username)
-                ON CONFLICT (telegram_id) DO UPDATE
+                INSERT INTO players (display_name, platform, external_user_id, external_username)
+                VALUES (@Name, 'Telegram', @ExternalId, @Username)
+                ON CONFLICT (platform, external_user_id)
+                WHERE platform IS NOT NULL AND external_user_id IS NOT NULL
+                DO UPDATE
                 SET display_name = EXCLUDED.display_name,
-                    telegram_username = EXCLUDED.telegram_username;
+                    external_username = EXCLUDED.external_username;
                 """,
-                new { TgId = gmId, Name = gmName, Username = gmUsername },
+                new { ExternalId = gmId.ToString(), Name = gmName, Username = gmUsername },
                 transaction);
 
             var existingGroup = await connection.QuerySingleOrDefaultAsync<SessionCreationGroupAccessDto>(
@@ -94,12 +96,14 @@ 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 p.platform = 'Telegram'
+                             AND p.external_user_id = @ExternalGmId
                        ) AS CanManage
                 FROM game_groups g
-                WHERE g.telegram_chat_id = @ChatId
+                WHERE g.platform = 'Telegram'
+                  AND g.external_group_id = @ExternalChatId
                 """,
-                new { ChatId = chatId, GmId = gmId },
+                new { ExternalChatId = chatId.ToString(), ExternalGmId = gmId.ToString() },
                 transaction);
 
             Guid groupId;
@@ -107,11 +111,11 @@ 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 (name, platform, external_group_id)
+                    VALUES (@ChatName, 'Telegram', @ExternalChatId)
                     RETURNING id;
                     """,
-                    new { ChatId = chatId, ChatName = chatTitle, GmId = gmId },
+                    new { ExternalChatId = chatId.ToString(), ChatName = chatTitle },
                     transaction);
 
                 await connection.ExecuteAsync(
@@ -119,10 +123,11 @@ 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 p.platform = 'Telegram'
+                      AND p.external_user_id = @ExternalGmId
                     ON CONFLICT (group_id, player_id) DO NOTHING
                     """,
-                    new { GroupId = groupId, GmId = gmId, OwnerRole = GroupManagerRoleExtensions.OwnerValue },
+                    new { GroupId = groupId, ExternalGmId = gmId.ToString(), OwnerRole = GroupManagerRoleExtensions.OwnerValue },
                     transaction);
             }
             else
@@ -144,14 +149,31 @@ 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 +183,8 @@ 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
@@ -173,12 +195,13 @@ public sealed class CreateSessionHandler(
                         Link = link,
                         ScheduledAt = scheduledAt,
                         ThreadId = messageThreadId,
+                        TopicCreatedByBot = topicCreatedByBot,
                         MaxPlayers = parseResult.MaxPlayers,
                         Status = SessionStatus.Planned
                     },
                     transaction);
 
-                sessions.Add(new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, parseResult.MaxPlayers));
+                sessions.Add(new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, parseResult.MaxPlayers, link));
             }
 
             await transaction.CommitAsync(cancellationToken);

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)
@@ -41,26 +41,27 @@ public sealed class PromoteWaitlistedPlayerHandler(
                            FROM group_managers gm
                            JOIN players p ON p.id = gm.player_id
                            WHERE gm.group_id = s.group_id
-                             AND p.telegram_id = @TelegramUserId
+                             AND p.platform = 'Telegram'
+                             AND p.external_user_id = @ExternalUserId
                        ) AS CanManage
                 FROM sessions s
                 WHERE s.id = @SessionId
                 FOR UPDATE
                 """,
-                new { command.SessionId, command.TelegramUserId },
+                new { command.SessionId, ExternalUserId = command.TelegramUserId.ToString() },
                 transaction);
 
             if (session is null)
             {
                 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 +90,14 @@ 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;
             }
 
@@ -137,7 +138,8 @@ public sealed class PromoteWaitlistedPlayerHandler(
                 SELECT id AS SessionId,
                        scheduled_at AS ScheduledAt,
                        status AS Status,
-                       max_players AS MaxPlayers
+                       max_players AS MaxPlayers,
+                       join_link AS JoinLink
                 FROM sessions
                 WHERE batch_id = @BatchId
                 ORDER BY scheduled_at
@@ -149,7 +151,7 @@ public sealed class PromoteWaitlistedPlayerHandler(
                 """
                 SELECT sp.session_id AS SessionId,
                        p.display_name AS DisplayName,
-                       p.telegram_username AS TelegramUsername,
+                       p.external_username AS TelegramUsername,
                        sp.registration_status AS RegistrationStatus
                 FROM session_participants sp
                 JOIN players p ON sp.player_id = p.id
@@ -164,17 +166,15 @@ 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)
         {
@@ -187,7 +187,10 @@ 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)
@@ -24,20 +24,21 @@ public sealed class ExportCalendarHandler(
             @"SELECT s.id as Id, s.title as Title, s.scheduled_at as ScheduledAt"
             + " FROM sessions s"
             + " JOIN game_groups g ON s.group_id = g.id"
-            + " WHERE g.telegram_chat_id = @ChatId"
+            + " WHERE g.platform = 'Telegram'"
+            + " AND g.external_group_id = @ExternalChatId"
             + " AND s.status = @Planned"
             + " AND s.scheduled_at > NOW()"
             + " ORDER BY s.scheduled_at ASC",
-            new { ChatId = message.Chat.Id, Planned = SessionStatus.Planned });
+            new { ExternalChatId = message.Chat.Id.ToString(), Planned = SessionStatus.Planned });
 
         var sessionsList = sessions.ToList();
 
         if (sessionsList.Count == 0)
         {
-            await botClient.SendMessage(
-                chatId: message.Chat.Id,
-                text: "📭 У этой группы нет запланированных сессий для экспорта.",
-                cancellationToken: cancellationToken);
+            await messenger.SendGroupMessageAsync(
+                TelegramPlatformIds.Group(message.Chat.Id, message.MessageThreadId),
+                "📭 У этой группы нет запланированных сессий для экспорта.",
+                cancellationToken);
             return;
         }
 
@@ -63,9 +64,7 @@ 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;
@@ -77,13 +76,13 @@ public sealed class ExportCalendarHandler(
             {
                 var token = Guid.NewGuid().ToString("N");
                 var groupId = await connection.QueryFirstOrDefaultAsync<Guid?>(
-                    @"SELECT id FROM game_groups WHERE telegram_chat_id = @ChatId",
-                    new { ChatId = message.Chat.Id });
+                    @"SELECT id FROM game_groups WHERE platform = 'Telegram' AND external_group_id = @ExternalChatId",
+                    new { ExternalChatId = message.Chat.Id.ToString() });
 
                 await connection.ExecuteAsync(
-                    @"INSERT INTO calendar_subscriptions (id, token, user_telegram_id, group_id, filter_type, created_at, expires_at)
-                      VALUES (gen_random_uuid(), @token, @userTelegramId, @groupId, @filterType, now(), NULL)",
-                    new { token, userTelegramId = senderId.Value, groupId, filterType = (int)CalendarSubscriptionFilter.SpecificGroup });
+                    @"INSERT INTO calendar_subscriptions (id, token, user_platform, user_external_id, group_id, filter_type, created_at, expires_at)
+                      VALUES (gen_random_uuid(), @token, 'Telegram', @userExternalId, @groupId, @filterType, now(), NULL)",
+                    new { token, userExternalId = senderId.Value.ToString(), groupId, filterType = (int)CalendarSubscriptionFilter.SpecificGroup });
 
                 subscriptionUrl = $"{baseUrl.TrimEnd('/')}/calendar/{token}.ics";
             }
@@ -93,20 +92,23 @@ 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,
@@ -29,18 +36,21 @@ 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
                        JOIN players p ON p.id = gm.player_id
                        WHERE gm.group_id = s.group_id
-                         AND p.telegram_id = @TelegramUserId
+                         AND p.platform = 'Telegram'
+                       AND p.external_user_id = @ExternalUserId
                    ) AS CanManage
             FROM sessions s
             WHERE s.id = @SessionId
             """,
-            new { command.SessionId, command.TelegramUserId }, transaction);
+            new { command.SessionId, ExternalUserId = command.TelegramUserId.ToString() }, transaction);
 
         if (session == null)
         {
@@ -57,15 +67,23 @@ 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
             {
@@ -92,18 +110,22 @@ public sealed class DeleteSessionHandler(
                          FROM group_managers gm
                          JOIN players manager_player ON manager_player.id = gm.player_id
                          WHERE gm.group_id = s.group_id
-                           AND manager_player.telegram_id = @TelegramUserId
+                           AND manager_player.platform = 'Telegram'
+                           AND manager_player.external_user_id = @ExternalUserId
                      ) AS CanManage
               FROM sessions s
               JOIN game_groups g ON s.group_id = g.id
               LEFT JOIN session_participants sp ON s.id = sp.session_id
-              WHERE g.telegram_chat_id = @ChatId AND s.status != @Cancelled AND s.scheduled_at > NOW()
+              WHERE g.platform = 'Telegram'
+                AND g.external_group_id = @ExternalChatId
+                AND s.status != @Cancelled
+                AND s.scheduled_at > NOW()
               GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players, s.group_id
               ORDER BY s.scheduled_at ASC",
             new
             {
-                ChatId = command.ChatId,
-                command.TelegramUserId,
+                ExternalChatId = command.ChatId.ToString(),
+                ExternalUserId = command.TelegramUserId.ToString(),
                 Cancelled = SessionStatus.Cancelled,
                 Active = ParticipantRegistrationStatus.Active,
                 Waitlisted = ParticipantRegistrationStatus.Waitlisted
@@ -113,7 +135,7 @@ 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/ListSessions/ListSessionsHandler.cs

@@ -74,18 +74,22 @@ public sealed class ListSessionsHandler(
                          FROM group_managers gm
                          JOIN players manager_player ON manager_player.id = gm.player_id
                          WHERE gm.group_id = s.group_id
-                           AND manager_player.telegram_id = @TelegramUserId
+                           AND manager_player.platform = 'Telegram'
+                           AND manager_player.external_user_id = @ExternalUserId
                      ) AS CanManage
               FROM sessions s
               JOIN game_groups g ON s.group_id = g.id
               LEFT JOIN session_participants sp ON s.id = sp.session_id
-              WHERE g.telegram_chat_id = @ChatId AND s.status != @Cancelled AND s.scheduled_at > NOW()
+              WHERE g.platform = 'Telegram'
+                AND g.external_group_id = @ExternalChatId
+                AND s.status != @Cancelled
+                AND s.scheduled_at > NOW()
               GROUP BY s.id, s.title, s.scheduled_at, s.status, s.max_players, s.group_id
               ORDER BY s.scheduled_at ASC",
             new
             {
-                ChatId = message.Chat.Id,
-                TelegramUserId = message.From?.Id,
+                ExternalChatId = message.Chat.Id.ToString(),
+                ExternalUserId = message.From?.Id.ToString(),
                 Cancelled = SessionStatus.Cancelled,
                 Active = ParticipantRegistrationStatus.Active,
                 Waitlisted = ParticipantRegistrationStatus.Waitlisted

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

@@ -1,6 +1,8 @@
 using Dapper;
 using GmRelay.Bot.Features.Notifications;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
@@ -14,13 +16,7 @@ namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
 internal sealed record AwaitingProposalDto(
     Guid Id, Guid SessionId, string Title, DateTime CurrentScheduledAt,
-    Guid BatchId, int? BatchMessageId, long TelegramChatId, string NotificationMode);
-
-internal sealed record VoteParticipantDto(
-    Guid PlayerId,
-    string DisplayName,
-    string? TelegramUsername,
-    long TelegramId = 0);
+    Guid BatchId, int? BatchMessageId, long TelegramChatId, int? ThreadId, string NotificationMode);
 
 // ── Handler ──────────────────────────────────────────────────────────
 
@@ -33,6 +29,7 @@ internal sealed record VoteParticipantDto(
 public sealed class HandleRescheduleTimeInputHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     DirectSessionNotificationSender directSender,
     ILogger<HandleRescheduleTimeInputHandler> logger)
 {
@@ -56,25 +53,28 @@ 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,
+                   g.external_group_id::BIGINT AS TelegramChatId,
+                   s.thread_id AS ThreadId,
                    s.notification_mode AS NotificationMode
             FROM reschedule_proposals rp
             JOIN sessions s ON s.id = rp.session_id
             JOIN game_groups g ON g.id = s.group_id
-            WHERE rp.proposed_by = @GmId
+            WHERE rp.proposed_by_external_user_id = @ExternalGmId
               AND rp.status = 'AwaitingTime'
-              AND g.telegram_chat_id = @ChatId
+              AND g.platform = 'Telegram'
+              AND g.external_group_id = @ExternalChatId
               AND EXISTS (
                   SELECT 1
                   FROM group_managers gm
                   JOIN players manager_player ON manager_player.id = gm.player_id
                   WHERE gm.group_id = s.group_id
-                    AND manager_player.telegram_id = @GmId
+                    AND manager_player.platform = 'Telegram'
+                    AND manager_player.external_user_id = @ExternalGmId
               )
             ORDER BY rp.created_at DESC
             LIMIT 1
             """,
-            new { GmId = gmTelegramId, ChatId = chatId });
+            new { ExternalGmId = gmTelegramId.ToString(), ExternalChatId = chatId.ToString() });
 
         if (proposal is null)
             return false;
@@ -82,11 +82,10 @@ 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;
         }
 
@@ -95,8 +94,8 @@ public sealed class HandleRescheduleTimeInputHandler(
             """
             SELECT p.id AS PlayerId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   p.telegram_id AS TelegramId
+                   p.external_username AS TelegramUsername,
+                   p.external_user_id::BIGINT AS TelegramId
             FROM session_participants sp
             JOIN players p ON p.id = sp.player_id
             WHERE sp.session_id = @SessionId
@@ -161,6 +160,7 @@ 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 +224,8 @@ 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 +240,10 @@ 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);
@@ -357,14 +358,14 @@ public sealed class HandleRescheduleTimeInputHandler(
             await using var conn = await dataSource.OpenConnectionAsync(ct);
 
             var batchSessions = (await conn.QueryAsync<SessionBatchDto>(
-                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
+                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers, join_link AS JoinLink FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
                 new { proposal.BatchId })).ToList();
 
             var batchParticipants = (await conn.QueryAsync<ParticipantBatchDto>(
                 """
                 SELECT sp.session_id AS SessionId,
                        p.display_name AS DisplayName,
-                       p.telegram_username AS TelegramUsername,
+                       p.external_username AS TelegramUsername,
                        sp.registration_status AS RegistrationStatus
                 FROM session_participants sp
                 JOIN players p ON sp.player_id = p.id
@@ -377,14 +378,12 @@ 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 +1,7 @@
 using Dapper;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
 using Npgsql;
 using Telegram.Bot;
 
@@ -12,16 +14,10 @@ public sealed record HandleRescheduleVoteCommand(
     long ChatId,
     int MessageId);
 
-internal sealed record VoteProposalDto(
-    Guid Id,
-    Guid SessionId,
-    DateTimeOffset VotingDeadlineAt,
-    string Title,
-    DateTime CurrentScheduledAt);
-
 public sealed class HandleRescheduleVoteHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
+    IPlatformMessenger messenger,
     ILogger<HandleRescheduleVoteHandler> logger)
 {
     public async Task HandleAsync(HandleRescheduleVoteCommand command, CancellationToken ct)
@@ -46,20 +42,13 @@ public sealed class HandleRescheduleVoteHandler(
 
         if (proposal is null)
         {
-            await bot.AnswerCallbackQuery(
-                command.CallbackQueryId,
-                "Голосование уже завершено или не найдено.",
-                cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Голосование уже завершено или не найдено.", ct);
             return;
         }
 
         if (proposal.VotingDeadlineAt <= DateTimeOffset.UtcNow)
         {
-            await bot.AnswerCallbackQuery(
-                command.CallbackQueryId,
-                "Дедлайн уже прошёл. Результаты скоро будут применены.",
-                showAlert: true,
-                cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Дедлайн уже прошёл. Результаты скоро будут применены.", ct, showAlert: true);
             return;
         }
 
@@ -69,19 +58,17 @@ public sealed class HandleRescheduleVoteHandler(
             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 = 'Telegram'
+              AND p.external_user_id = @ExternalUserId
               AND sp.is_gm = false
               AND sp.registration_status = @Active
             """,
-            new { proposal.SessionId, command.TelegramUserId, Active = ParticipantRegistrationStatus.Active },
+            new { proposal.SessionId, ExternalUserId = command.TelegramUserId.ToString(), Active = ParticipantRegistrationStatus.Active },
             transaction);
 
         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;
         }
 
@@ -105,8 +92,8 @@ public sealed class HandleRescheduleVoteHandler(
             """
             SELECT p.id AS PlayerId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   p.telegram_id AS TelegramId
+                   p.external_username AS TelegramUsername,
+                   p.external_user_id::BIGINT AS TelegramId
             FROM session_participants sp
             JOIN players p ON p.id = sp.player_id
             WHERE sp.session_id = @SessionId
@@ -134,7 +121,7 @@ public sealed class HandleRescheduleVoteHandler(
             SELECT rov.option_id AS OptionId,
                    p.id AS PlayerId,
                    p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername
+                   p.external_username AS TelegramUsername
             FROM reschedule_option_votes rov
             JOIN players p ON p.id = rov.player_id
             WHERE rov.proposal_id = @ProposalId
@@ -169,9 +156,9 @@ 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)
@@ -43,23 +45,23 @@ public sealed class InitiateRescheduleHandler(
                        FROM group_managers gm
                        JOIN players p ON p.id = gm.player_id
                        WHERE gm.group_id = s.group_id
-                         AND p.telegram_id = @TelegramUserId
+                         AND p.platform = 'Telegram'
+                         AND p.external_user_id = @ExternalUserId
                    ) AS CanManage
             FROM sessions s
             WHERE s.id = @SessionId AND s.status != @Cancelled
             """,
-            new { command.SessionId, command.TelegramUserId, Cancelled = SessionStatus.Cancelled });
+            new { command.SessionId, ExternalUserId = command.TelegramUserId.ToString(), Cancelled = SessionStatus.Cancelled });
 
         if (session is null)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Сессия не найдена.", cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Сессия не найдена.", ct);
             return;
         }
 
         if (!session.CanManage)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId,
-                "Только owner или co-GM может переносить сессию.", showAlert: true, cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Только owner или co-GM может переносить сессию.", ct, showAlert: true);
             return;
         }
 
@@ -75,38 +77,43 @@ public sealed class InitiateRescheduleHandler(
 
         if (hasActive)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId,
-                "Уже есть активный запрос на перенос этой сессии.", showAlert: true, cancellationToken: ct);
+            await AnswerAsync(command.CallbackQueryId, "Уже есть активный запрос на перенос этой сессии.", ct, showAlert: true);
             return;
         }
 
         // 3. Create proposal in AwaitingTime status
         await connection.ExecuteAsync(
             """
-            INSERT INTO reschedule_proposals (session_id, proposed_by, status)
-            VALUES (@SessionId, @GmId, 'AwaitingTime')
+            INSERT INTO reschedule_proposals (session_id, proposed_by_external_user_id, source_platform, status)
+            VALUES (@SessionId, @ProposedBy, 'Telegram', 'AwaitingTime')
             """,
-            new { command.SessionId, GmId = command.TelegramUserId });
+            new { command.SessionId, ProposedBy = command.TelegramUserId.ToString() });
 
         logger.LogInformation("Reschedule initiated for session {SessionId} by GM {GmId}", command.SessionId, command.TelegramUserId);
 
         // 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

@@ -1,30 +1,25 @@
 using Dapper;
-using GmRelay.Bot.Features.Notifications;
+using GmRelay.Bot.Infrastructure.Telegram;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Npgsql;
-using Telegram.Bot;
-using Telegram.Bot.Types.Enums;
-using GmRelay.Bot.Infrastructure.Telegram;
 
 namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
-internal sealed record DueRescheduleProposalDto(
-    Guid Id,
-    Guid SessionId,
-    DateTimeOffset VotingDeadlineAt,
-    string Title,
-    DateTime CurrentScheduledAt,
-    Guid BatchId,
-    int? BatchMessageId,
+internal sealed record TelegramProposalFieldsDto(
     int? VoteMessageId,
+    int? BatchMessageId,
     long TelegramChatId,
-    string NotificationMode);
+    int? ThreadId);
 
 public sealed class RescheduleVotingDeadlineService(
     NpgsqlDataSource dataSource,
-    ITelegramBotClient bot,
-    DirectSessionNotificationSender directSender,
+    IPlatformMessenger messenger,
+    PlatformDirectNotificationSender directSender,
+    RescheduleVotingFinalizer finalizer,
     ILogger<RescheduleVotingDeadlineService> logger) : BackgroundService
 {
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
@@ -48,17 +43,7 @@ public sealed class RescheduleVotingDeadlineService(
     {
         try
         {
-            await using var connection = await dataSource.OpenConnectionAsync(ct);
-            var proposalIds = (await connection.QueryAsync<Guid>(
-                """
-                SELECT id
-                FROM reschedule_proposals
-                WHERE status = 'Voting'
-                  AND voting_deadline_at IS NOT NULL
-                  AND voting_deadline_at <= now()
-                ORDER BY voting_deadline_at
-                LIMIT 25
-                """)).ToList();
+            var proposalIds = await finalizer.GetDueProposalIdsAsync("Telegram", ct);
 
             foreach (var proposalId in proposalIds)
             {
@@ -76,224 +61,115 @@ public sealed class RescheduleVotingDeadlineService(
 
     private async Task FinalizeProposal(Guid proposalId, CancellationToken ct)
     {
-        await using var connection = await dataSource.OpenConnectionAsync(ct);
-        await using var transaction = await connection.BeginTransactionAsync(ct);
+        var result = await finalizer.FinalizeAsync(proposalId, ct);
+        if (result is null)
+            return;
 
-        var proposal = await connection.QuerySingleOrDefaultAsync<DueRescheduleProposalDto>(
+        if (result.SourcePlatform != "Telegram")
+        {
+            logger.LogInformation(
+                "Skipping Telegram message handling for proposal {ProposalId} with source platform {SourcePlatform}",
+                proposalId,
+                result.SourcePlatform);
+            return;
+        }
+
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        var telegramFields = await connection.QuerySingleOrDefaultAsync<TelegramProposalFieldsDto>(
             """
-            SELECT rp.id AS Id,
-                   rp.session_id AS SessionId,
-                   rp.voting_deadline_at AS VotingDeadlineAt,
-                   rp.vote_message_id AS VoteMessageId,
-                   s.title AS Title,
-                   s.scheduled_at AS CurrentScheduledAt,
-                   s.batch_id AS BatchId,
+            SELECT rp.vote_message_id AS VoteMessageId,
                    s.batch_message_id AS BatchMessageId,
-                   s.notification_mode AS NotificationMode,
-                   g.telegram_chat_id AS TelegramChatId
+                   g.external_group_id::BIGINT AS TelegramChatId,
+                   s.thread_id AS ThreadId
             FROM reschedule_proposals rp
             JOIN sessions s ON s.id = rp.session_id
             JOIN game_groups g ON g.id = s.group_id
             WHERE rp.id = @ProposalId
-              AND rp.status = 'Voting'
-              AND rp.voting_deadline_at IS NOT NULL
-              AND rp.voting_deadline_at <= now()
-            FOR UPDATE
             """,
-            new { ProposalId = proposalId },
-            transaction);
+            new { ProposalId = proposalId });
 
-        if (proposal is null)
+        if (telegramFields is null)
+        {
+            logger.LogWarning("Could not find Telegram fields for proposal {ProposalId}", proposalId);
             return;
-
-        var participants = (await connection.QueryAsync<VoteParticipantDto>(
-            """
-            SELECT p.id AS PlayerId,
-                   p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername,
-                   p.telegram_id AS TelegramId
-            FROM session_participants sp
-            JOIN players p ON p.id = sp.player_id
-            WHERE sp.session_id = @SessionId
-              AND sp.is_gm = false
-              AND sp.registration_status = @Active
-            ORDER BY p.display_name
-            """,
-            new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
-            transaction)).ToList();
-
-        var options = (await connection.QueryAsync<RescheduleOptionDto>(
-            """
-            SELECT id AS OptionId,
-                   display_order AS DisplayOrder,
-                   proposed_at AS ProposedAt
-            FROM reschedule_options
-            WHERE proposal_id = @ProposalId
-            ORDER BY display_order
-            """,
-            new { ProposalId = proposal.Id },
-            transaction)).ToList();
-
-        var votes = (await connection.QueryAsync<RescheduleOptionVoteDto>(
-            """
-            SELECT rov.option_id AS OptionId,
-                   p.id AS PlayerId,
-                   p.display_name AS DisplayName,
-                   p.telegram_username AS TelegramUsername
-            FROM reschedule_option_votes rov
-            JOIN players p ON p.id = rov.player_id
-            WHERE rov.proposal_id = @ProposalId
-            ORDER BY rov.voted_at, p.display_name
-            """,
-            new { ProposalId = proposal.Id },
-            transaction)).ToList();
-
-        var voteCounts = options
-            .Select(option => new RescheduleOptionVoteCount(
-                option.OptionId,
-                votes.Count(vote => vote.OptionId == option.OptionId)))
-            .ToList();
-        var decision = RescheduleVoteRules.SelectWinner(voteCounts);
-        var selectedOption = decision.SelectedOptionId is { } selectedOptionId
-            ? options.Single(x => x.OptionId == selectedOptionId)
-            : null;
-
-        if (selectedOption is not null)
-        {
-            await connection.ExecuteAsync(
-                """
-                UPDATE sessions
-                SET scheduled_at = @NewTime,
-                    status = @Status,
-                    confirmation_message_id = NULL,
-                    link_message_id = NULL,
-                    one_hour_reminder_processed_at = NULL,
-                    updated_at = now()
-                WHERE id = @SessionId
-                """,
-                new { NewTime = selectedOption.ProposedAt, proposal.SessionId, Status = SessionStatus.Planned },
-                transaction);
-
-            await connection.ExecuteAsync(
-                """
-                UPDATE session_participants
-                SET rsvp_status = 'Pending',
-                    responded_at = NULL
-                WHERE session_id = @SessionId
-                  AND is_gm = false
-                  AND registration_status = @Active
-                """,
-                new { proposal.SessionId, Active = ParticipantRegistrationStatus.Active },
-                transaction);
-
-            await connection.ExecuteAsync(
-                """
-                UPDATE reschedule_proposals
-                SET status = 'Approved',
-                    selected_option_id = @SelectedOptionId,
-                    proposed_at = @ProposedAt
-                WHERE id = @ProposalId
-                """,
-                new
-                {
-                    ProposalId = proposal.Id,
-                    SelectedOptionId = selectedOption.OptionId,
-                    ProposedAt = selectedOption.ProposedAt
-                },
-                transaction);
-        }
-        else
-        {
-            await connection.ExecuteAsync(
-                "UPDATE reschedule_proposals SET status = 'Rejected' WHERE id = @ProposalId",
-                new { ProposalId = proposal.Id },
-                transaction);
         }
 
-        var directRecipients = participants
-            .Select(p => new DirectNotificationRecipient(p.TelegramId, p.DisplayName))
+        var directRecipients = result.Participants
+            .Select(p => TelegramPlatformIds.User(p.TelegramId, p.DisplayName))
             .ToList();
 
-        await transaction.CommitAsync(ct);
+        await TryUpdateVoteMessage(result, telegramFields, ct);
 
-        await TryUpdateVoteMessage(proposal, options, participants, votes, decision, selectedOption, ct);
-
-        if (selectedOption is not null)
+        if (result.SelectedOption is not null)
         {
-            await TryUpdateBatchMessage(proposal, ct);
+            await TryUpdateBatchMessage(result, telegramFields, ct);
         }
 
-        var mode = SessionNotificationModeExtensions.FromDatabaseValue(proposal.NotificationMode);
+        var mode = SessionNotificationModeExtensions.FromDatabaseValue(result.NotificationMode);
         if (mode.ShouldSendDirectMessages())
         {
-            await SendDirectResult(proposal, directRecipients, decision, selectedOption, ct);
+            await SendDirectResult(result, directRecipients, ct);
         }
 
         logger.LogInformation(
-            "Finalized reschedule proposal {ProposalId} for session {SessionId} with outcome {Outcome}",
-            proposal.Id,
-            proposal.SessionId,
-            decision.Outcome);
+            "Updated Telegram messages for finalized reschedule proposal {ProposalId} for session {SessionId}",
+            result.ProposalId,
+            result.SessionId);
     }
 
     private async Task TryUpdateVoteMessage(
-        DueRescheduleProposalDto proposal,
-        IReadOnlyList<RescheduleOptionDto> options,
-        IReadOnlyList<VoteParticipantDto> participants,
-        IReadOnlyList<RescheduleOptionVoteDto> votes,
-        RescheduleVoteDecision decision,
-        RescheduleOptionDto? selectedOption,
+        RescheduleVotingFinalizerResult result,
+        TelegramProposalFieldsDto telegramFields,
         CancellationToken ct)
     {
-        if (proposal.VoteMessageId is null)
+        if (telegramFields.VoteMessageId is null)
             return;
 
         try
         {
-            var resultText = selectedOption is not null
-                ? $"✅ <b>Голосование завершено.</b>\nПобедил вариант {selectedOption.DisplayOrder}: <b>{selectedOption.ProposedAt.FormatMoscow()}</b> (МСК)."
-                : $"❌ <b>Голосование завершено.</b>\n{System.Net.WebUtility.HtmlEncode(decision.Reason)}";
-
-            var text = $"""
-                {HandleRescheduleTimeInputHandler.BuildVotingMessage(
-                    proposal.Title,
-                    proposal.CurrentScheduledAt,
-                    proposal.VotingDeadlineAt,
-                    options,
-                    participants,
-                    votes)}
-
-                {resultText}
-                """;
-
-            await bot.EditMessageText(
-                chatId: proposal.TelegramChatId,
-                messageId: proposal.VoteMessageId.Value,
-                text: text,
-                parseMode: ParseMode.Html,
-                cancellationToken: ct);
+            await messenger.UpdateRescheduleVoteAsync(
+                new PlatformRescheduleVoteUpdate(
+                    TelegramPlatformIds.Group(telegramFields.TelegramChatId, telegramFields.ThreadId),
+                    TelegramPlatformIds.Message(
+                        telegramFields.TelegramChatId,
+                        telegramFields.ThreadId,
+                        telegramFields.VoteMessageId.Value),
+                    result.ProposalId,
+                    result.SessionId,
+                    result.Title,
+                    result.CurrentScheduledAt,
+                    result.VotingDeadlineAt,
+                    result.Decision,
+                    result.SelectedOption,
+                    result.Options,
+                    result.Votes,
+                    result.Participants),
+                ct);
         }
         catch (Exception ex)
         {
-            logger.LogWarning(ex, "Failed to update finalized reschedule vote message for proposal {ProposalId}", proposal.Id);
+            logger.LogWarning(ex, "Failed to update finalized reschedule vote message for proposal {ProposalId}", result.ProposalId);
         }
     }
 
-    private async Task TryUpdateBatchMessage(DueRescheduleProposalDto proposal, CancellationToken ct)
+    private async Task TryUpdateBatchMessage(
+        RescheduleVotingFinalizerResult result,
+        TelegramProposalFieldsDto telegramFields,
+        CancellationToken ct)
     {
         try
         {
             await using var connection = await dataSource.OpenConnectionAsync(ct);
 
             var batchSessions = (await connection.QueryAsync<SessionBatchDto>(
-                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
-                new { proposal.BatchId })).ToList();
+                "SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status, max_players AS MaxPlayers, join_link AS JoinLink FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
+                new { result.BatchId })).ToList();
 
             var batchParticipants = (await connection.QueryAsync<ParticipantBatchDto>(
                 """
                 SELECT sp.session_id AS SessionId,
                        p.display_name AS DisplayName,
-                       p.telegram_username AS TelegramUsername,
+                       p.external_username AS TelegramUsername,
                        sp.registration_status AS RegistrationStatus
                 FROM session_participants sp
                 JOIN players p ON sp.player_id = p.id
@@ -301,63 +177,49 @@ public sealed class RescheduleVotingDeadlineService(
                 WHERE s.batch_id = @BatchId AND sp.is_gm = false
                 ORDER BY sp.registration_status ASC, sp.created_at ASC, sp.responded_at ASC, p.created_at ASC
                 """,
-                new { proposal.BatchId })).ToList();
+                new { result.BatchId })).ToList();
 
-            if (proposal.BatchMessageId.HasValue)
+            if (telegramFields.BatchMessageId.HasValue)
             {
-                var view = SessionBatchViewBuilder.Build(proposal.Title, batchSessions, batchParticipants);
-                var renderResult = TelegramSessionBatchRenderer.Render(view);
+                var view = SessionBatchViewBuilder.Build(result.Title, batchSessions, batchParticipants);
 
-                await BatchMessageEditor.EditBatchMessageAsync(
-                    bot,
-                    chatId: proposal.TelegramChatId,
-                    messageId: proposal.BatchMessageId.Value,
-                    text: renderResult.Text,
-                    replyMarkup: renderResult.Markup,
+                await messenger.UpdateScheduleAsync(
+                    new PlatformScheduleMessage(
+                        TelegramPlatformIds.Group(telegramFields.TelegramChatId, telegramFields.ThreadId),
+                        view,
+                        TelegramPlatformIds.Message(telegramFields.TelegramChatId, telegramFields.ThreadId, telegramFields.BatchMessageId.Value)),
                     ct);
             }
             else
             {
-                await bot.SendMessage(
-                    chatId: proposal.TelegramChatId,
-                    text: $"📣 Расписание обновлено после голосования за перенос сессии «{System.Net.WebUtility.HtmlEncode(proposal.Title)}».",
-                    parseMode: ParseMode.Html,
-                    cancellationToken: ct);
+                await messenger.SendGroupMessageAsync(
+                    TelegramPlatformIds.Group(telegramFields.TelegramChatId, telegramFields.ThreadId),
+                    $"Расписание обновлено после голосования за перенос сессии \"{System.Net.WebUtility.HtmlEncode(result.Title)}\".",
+                    ct);
             }
         }
         catch (Exception ex)
         {
-            logger.LogWarning(ex, "Failed to update batch message for finalized proposal {ProposalId}", proposal.Id);
+            logger.LogWarning(ex, "Failed to update batch message for finalized proposal {ProposalId}", result.ProposalId);
         }
     }
 
     private async Task SendDirectResult(
-        DueRescheduleProposalDto proposal,
-        IReadOnlyList<DirectNotificationRecipient> recipients,
-        RescheduleVoteDecision decision,
-        RescheduleOptionDto? selectedOption,
+        RescheduleVotingFinalizerResult result,
+        IReadOnlyList<PlatformUser> recipients,
         CancellationToken ct)
     {
-        var htmlText = selectedOption is not null
-            ? $"""
-                ✅ <b>Сессия перенесена по итогам голосования</b>
-
-                📌 <b>{System.Net.WebUtility.HtmlEncode(proposal.Title)}</b>
-                📅 Новое время: <b>{selectedOption.ProposedAt.FormatMoscow()}</b> (МСК)
-                """
-            : $"""
-                ❌ <b>Перенос сессии отклонён по итогам голосования</b>
-
-                📌 <b>{System.Net.WebUtility.HtmlEncode(proposal.Title)}</b>
-                📅 Время остаётся прежним: <b>{proposal.CurrentScheduledAt.FormatMoscow()}</b> (МСК)
-                Причина: {System.Net.WebUtility.HtmlEncode(decision.Reason)}
-                """;
-
         await directSender.SendAsync(
+            result.SelectedOption is not null
+                ? PlatformDirectSessionNotificationKind.RescheduleApproved
+                : PlatformDirectSessionNotificationKind.RescheduleRejected,
             recipients,
-            htmlText,
-            selectedOption is not null ? "reschedule-vote-approved" : "reschedule-vote-rejected",
-            proposal.SessionId,
+            result.SessionId,
+            result.Title,
+            result.SelectedOption?.ProposedAt.UtcDateTime ?? result.CurrentScheduledAt,
+            joinLink: null,
+            actorDisplayName: null,
+            reason: result.SelectedOption is null ? result.Decision.Reason : null,
             ct);
     }
 }

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

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

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

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

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

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

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

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

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

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

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

@@ -21,6 +21,11 @@ public static class TelegramSessionBatchRenderer
                 ? $"👥 Места: {session.ActivePlayerCount}/{session.MaxPlayers.Value}\n"
                 : $"👥 Игроки ({session.ActivePlayerCount}):\n";
 
+            if (!string.IsNullOrEmpty(session.JoinLink))
+            {
+                messageText += $"🔗 <a href=\"{System.Net.WebUtility.HtmlEncode(session.JoinLink)}\">Ссылка на игру</a>\n";
+            }
+
             if (session.ActivePlayers.Count > 0)
             {
                 messageText += string.Join("\n", session.ActivePlayers.Select(p =>

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

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

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

@@ -1,7 +1,8 @@
 // ... UpdateRouter will have CancelSessionHandler and cancel_session route instead of close_recruitment
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Sessions.CreateSession;
 using GmRelay.Shared.Rendering;
-using GmRelay.Bot.Features.Confirmation.HandleRsvp;
 using GmRelay.Bot.Features.Sessions.CreateSession;
 using GmRelay.Bot.Features.Sessions.ListSessions;
 using GmRelay.Bot.Features.Sessions.ExportCalendar;
@@ -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);
@@ -180,11 +187,11 @@ public sealed class UpdateRouter(
 
             var command = new HandleRsvpCommand(
                 SessionId: sessionId,
-                TelegramUserId: query.From.Id,
+                User: user,
                 Status: status,
-                CallbackQueryId: query.Id,
-                ChatId: message.Chat.Id,
-                MessageId: message.MessageId);
+                InteractionId: query.Id,
+                Group: group,
+                ConfirmationMessage: scheduleMessage);
 
             await rsvpHandler.HandleAsync(command, ct);
         }

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/Migrations/V018__discord_reschedule_proposals.sql

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

src/GmRelay.Bot/Migrations/V019__audit_log_platform_identity.sql

@@ -0,0 +1,18 @@
+-- =============================================================
+-- V019: Rename session_audit_log.actor_telegram_id to actor_external_user_id
+-- =============================================================
+-- Scope: Support platform-agnostic audit log identity.
+-- =============================================================
+
+ALTER TABLE session_audit_log
+    ADD COLUMN actor_external_user_id VARCHAR(255);
+
+UPDATE session_audit_log
+   SET actor_external_user_id = actor_telegram_id::TEXT
+ WHERE actor_external_user_id IS NULL;
+
+ALTER TABLE session_audit_log
+    ALTER COLUMN actor_external_user_id SET NOT NULL;
+
+ALTER TABLE session_audit_log
+    DROP COLUMN actor_telegram_id;

src/GmRelay.Bot/Migrations/V020__player_identity_links.sql

@@ -0,0 +1,37 @@
+-- =============================================================
+-- V020: Player identity linking for unified multi-platform accounts
+-- =============================================================
+-- Scope: Allow linking multiple platform identities (Telegram, Discord)
+-- to a single "primary" player account. All group/session permissions
+-- resolve through the effective (primary) player id.
+-- =============================================================
+
+-- player_links: secondary player → primary player (1:1 on secondary)
+CREATE TABLE player_links (
+    id                    UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    primary_player_id     UUID NOT NULL REFERENCES players(id) ON DELETE CASCADE,
+    secondary_player_id   UUID NOT NULL UNIQUE REFERENCES players(id) ON DELETE CASCADE,
+    linked_at             TIMESTAMPTZ NOT NULL DEFAULT now(),
+    linked_by_player_id   UUID REFERENCES players(id) ON DELETE SET NULL,
+    -- Prevent self-linking at the DB level
+    CONSTRAINT no_self_link CHECK (primary_player_id <> secondary_player_id)
+);
+
+CREATE INDEX ix_player_links_primary_player_id
+    ON player_links(primary_player_id);
+
+-- identity_audit_log: security-sensitive link/unlink actions
+CREATE TABLE identity_audit_log (
+    id                      UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    player_id               UUID NOT NULL REFERENCES players(id) ON DELETE CASCADE,
+    action                  VARCHAR(50) NOT NULL,   -- 'link', 'unlink', 'link_attempt_conflict'
+    target_platform         VARCHAR(50),
+    target_external_user_id VARCHAR(255),
+    performed_at            TIMESTAMPTZ NOT NULL DEFAULT now(),
+    performed_by_player_id  UUID REFERENCES players(id) ON DELETE SET NULL
+);
+
+CREATE INDEX ix_identity_audit_log_player_id
+    ON identity_audit_log(player_id);
+CREATE INDEX ix_identity_audit_log_performed_at
+    ON identity_audit_log(performed_at DESC);

src/GmRelay.Bot/Migrations/V021__add_avatar_url.sql

@@ -0,0 +1,8 @@
+-- =============================================================
+-- V021: Add avatar_url column to players table
+-- =============================================================
+-- Scope: Support storing avatar URLs for Discord and other platforms.
+-- =============================================================
+
+ALTER TABLE players
+    ADD COLUMN avatar_url VARCHAR(500);

src/GmRelay.Bot/Migrations/V022__fix_discord_telegram_links.sql

@@ -0,0 +1,16 @@
+-- =============================================================
+-- V022: Fix incorrectly oriented player_links for Discord↔Telegram
+-- =============================================================
+-- Scope: Reverse player_links where Discord was incorrectly made primary
+-- and Telegram secondary. Telegram (with historical group/session data)
+-- must always be the primary account.
+-- =============================================================
+
+UPDATE player_links pl
+SET primary_player_id   = pl.secondary_player_id,
+    secondary_player_id = pl.primary_player_id
+FROM players p1, players p2
+WHERE pl.primary_player_id = p1.id
+  AND pl.secondary_player_id = p2.id
+  AND p1.platform = 'Discord'
+  AND p2.platform = 'Telegram';

src/GmRelay.Bot/Migrations/V023__game_groups_telegram_chat_id_nullable.sql

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

src/GmRelay.Bot/Migrations/V024__deprecate_telegram_columns.sql

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

src/GmRelay.Bot/Migrations/V025__reschedule_proposals_telegram_external.sql

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

src/GmRelay.Bot/Program.cs

@@ -1,14 +1,19 @@
-using GmRelay.Bot.Features.Confirmation.HandleRsvp;
-using GmRelay.Bot.Features.Confirmation.SendConfirmation;
 using GmRelay.Bot.Features.Notifications;
-using GmRelay.Bot.Features.Reminders.SendJoinLink;
-using GmRelay.Bot.Features.Reminders.SendOneHourReminder;
 using GmRelay.Bot.Features.Sessions.CreateSession;
 using GmRelay.Bot.Features.Sessions.RescheduleSession;
 using GmRelay.Bot.Infrastructure.Database;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Bot.Infrastructure.Health;
 using GmRelay.Bot.Infrastructure.Logging;
-using GmRelay.Bot.Infrastructure.Scheduling;
 using GmRelay.Bot.Infrastructure.Telegram;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Confirmation.SendConfirmation;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Features.Reminders.SendJoinLink;
+using GmRelay.Shared.Features.Reminders.SendOneHourReminder;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Infrastructure.Scheduling;
+using GmRelay.Shared.Platform;
 using Npgsql;
 using Telegram.Bot;
 
@@ -49,14 +54,20 @@ builder.Services.AddSingleton<ITelegramBotClient>(sp =>
     return new TelegramBotClient(token);
 });
 builder.Services.AddSingleton<ITelegramUpdateSource, TelegramUpdateSource>();
+builder.Services.AddSingleton<IPlatformMessenger, TelegramPlatformMessenger>();
+builder.Services.AddSingleton(new PlatformSchedulerOptions(PlatformKind.Telegram));
 
 // ── Feature handlers (explicit registration — AOT safe) ──────────────
 builder.Services.AddSingleton<SendConfirmationHandler>();
-builder.Services.AddSingleton<DirectSessionNotificationSender>();
+builder.Services.AddSingleton<ISendConfirmationHandler>(sp => sp.GetRequiredService<SendConfirmationHandler>());
+builder.Services.AddSingleton<PlatformDirectNotificationSender>();
 builder.Services.AddSingleton<HandleRsvpHandler>();
 builder.Services.AddSingleton<SendJoinLinkHandler>();
+builder.Services.AddSingleton<ISendJoinLinkHandler>(sp => sp.GetRequiredService<SendJoinLinkHandler>());
 builder.Services.AddSingleton<SendOneHourReminderHandler>();
+builder.Services.AddSingleton<ISendOneHourReminderHandler>(sp => sp.GetRequiredService<SendOneHourReminderHandler>());
 builder.Services.AddSingleton<CreateSessionHandler>();
+builder.Services.AddSingleton<IScheduleMessageUpdateLock, ScheduleMessageUpdateLock>();
 builder.Services.AddSingleton<JoinSessionHandler>();
 builder.Services.AddSingleton<LeaveSessionHandler>();
 builder.Services.AddSingleton<PromoteWaitlistedPlayerHandler>();
@@ -67,6 +78,9 @@ builder.Services.AddSingleton<GmRelay.Bot.Features.Sessions.ExportCalendar.Expor
 builder.Services.AddSingleton<InitiateRescheduleHandler>();
 builder.Services.AddSingleton<HandleRescheduleTimeInputHandler>();
 builder.Services.AddSingleton<HandleRescheduleVoteHandler>();
+builder.Services.AddSingleton<RescheduleVotingFinalizer>();
+
+builder.Services.AddSingleton<DirectSessionNotificationSender>();
 
 // ── Telegram infrastructure ──────────────────────────────────────────
 builder.Services.AddSingleton<UpdateRouter>();
@@ -74,10 +88,17 @@ builder.Services.AddSingleton<ITelegramUpdateHandler>(sp => sp.GetRequiredServic
 builder.Services.AddHostedService<TelegramMiniAppMenuButtonService>();
 builder.Services.AddHostedService<TelegramBotService>();
 
+// ── Clock and scheduling ──────────────────────────────────────────────
+builder.Services.AddSingleton<ISystemClock, GmRelay.Bot.Infrastructure.Scheduling.SystemClock>();
+builder.Services.AddSingleton<ISessionTriggerStore, DbSessionTriggerStore>();
+
 // ── Session scheduler ────────────────────────────────────────────────
 builder.Services.AddHostedService<SessionSchedulerService>();
 builder.Services.AddHostedService<RescheduleVotingDeadlineService>();
 
+// ── Health check server ──────────────────────────────────────────────
+builder.Services.AddHostedService<BotHealthCheckHostedService>();
+
 var host = builder.Build();
 
 // ── Run database migrations on startup ───────────────────────────────

src/GmRelay.Bot/packages.lock.json

@@ -0,0 +1,695 @@
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+          "Npgsql.DependencyInjection": "10.0.1",
+          "Npgsql.OpenTelemetry": "10.0.1",
+          "OpenTelemetry.Extensions.Hosting": "1.15.0"
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+      }
+    }
+  }
+}

src/GmRelay.DiscordBot/DiscordOptions.cs

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

src/GmRelay.DiscordBot/Dockerfile

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

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

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

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

@@ -0,0 +1,48 @@
+using NetCord;
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public class DiscordListSessionsCommand : ApplicationCommandModule<SlashCommandContext>
+{
+    private readonly DiscordListSessionsHandler _handler;
+
+    public DiscordListSessionsCommand(DiscordListSessionsHandler handler)
+    {
+        _handler = handler;
+    }
+
+    [SlashCommand("listsessions", "Show upcoming game sessions in this server")]
+    public async Task ExecuteAsync()
+    {
+        var guildId = Context.Interaction.GuildId?.ToString()
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+        var channelId = Context.Channel.Id.ToString();
+        var member = Context.User as GuildInteractionUser;
+        var resolvedPermissions = member is null ? 0UL : (ulong)member.Permissions;
+        var guildOwnerId = 0UL;
+
+        var view = await _handler.BuildScheduleAsync(
+            guildId,
+            channelId,
+            Context.User.Id,
+            resolvedPermissions,
+            guildOwnerId,
+            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 +1,110 @@
+using Dapper;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+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,
+    DiscordPermissionChecker permissionChecker)
+{
+    public Task<SessionBatchViewModel?> BuildScheduleAsync(
+        string guildId,
+        string channelId,
+        CancellationToken cancellationToken) =>
+        BuildScheduleAsync(guildId, channelId, 0, 0, 0, cancellationToken);
+
+    public async Task<SessionBatchViewModel?> BuildScheduleAsync(
+        string guildId,
+        string channelId,
+        ulong userId,
+        ulong resolvedPermissions,
+        ulong guildOwnerId,
+        CancellationToken cancellationToken)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(cancellationToken);
+
+        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)::int as PlayerCount,
+                     COUNT(sp.id) FILTER (WHERE sp.is_gm = false AND sp.registration_status = @Waitlisted)::int as WaitlistCount
+              FROM sessions s
+              JOIN game_groups g ON s.group_id = g.id
+              LEFT JOIN session_participants sp ON s.id = sp.session_id
+              WHERE g.platform = 'Discord'
+                AND g.external_group_id = @GuildId
+                AND s.status != @Cancelled
+                AND s.scheduled_at > now() - interval '4 hours'
+              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 dbManagerUserIds = await connection.QueryAsync<ulong>(
+            @"SELECT CAST(p.external_user_id AS BIGINT)
+              FROM group_managers gm
+              JOIN players p ON p.id = gm.player_id
+              JOIN game_groups g ON g.id = gm.group_id
+              WHERE g.platform = 'Discord' AND g.external_group_id = @GuildId",
+            new { GuildId = guildId });
+
+        var canManage = permissionChecker.CanManageSchedule(
+            guildOwnerId,
+            userId,
+            dbManagerUserIds,
+            resolvedPermissions);
+
+        var sessionIds = sessionList.Select(s => s.Id).ToList();
+        var participants = await connection.QueryAsync<ParticipantBatchDto>(
+            @"SELECT sp.session_id as SessionId,
+                     p.display_name as DisplayName,
+                     p.external_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();
+
+        var view = SessionBatchViewBuilder.Build(firstTitle, batchDtos, participants.ToList());
+        return canManage ? AddManagerActions(view) : view;
+    }
+
+    internal static SessionBatchViewModel AddManagerActions(SessionBatchViewModel view) =>
+        view with
+        {
+            Sessions = view.Sessions
+                .Select(session =>
+                {
+                    if (SessionStatus.IsCancelled(session.Status))
+                        return session;
+
+                    var actions = session.AvailableActions
+                        .Concat([new AvailableAction("delete_session", $"Удалить {session.ScheduledAt.FormatMoscowShort()}", session.SessionId)])
+                        .ToList();
+
+                    return session with { AvailableActions = actions };
+                })
+                .ToList()
+        };
+}

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

@@ -0,0 +1,128 @@
+using GmRelay.DiscordBot.Rendering;
+using NetCord;
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+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;
+    }
+
+    [SlashCommand("newsession", "Create a new game session")]
+    public async Task ExecuteAsync(
+        [SlashCommandParameter(Name = "title", Description = "Game title")] string title,
+        [SlashCommandParameter(Name = "time", Description = "Session time (YYYY-MM-DD HH:mm or DD.MM.YYYY HH:mm)")] string time,
+        [SlashCommandParameter(Name = "seats", Description = "Maximum number of players")] long? seats = null,
+        [SlashCommandParameter(Name = "link", Description = "Join link")] string? link = null)
+    {
+        _logger.LogInformation(
+            "newsession called by user {UserId} ({UserType}) in guild {GuildId}, channel {ChannelId}",
+            Context.User.Id,
+            Context.User.GetType().Name,
+            Context.Interaction.GuildId,
+            Context.Channel?.Id);
+
+        var guildId = Context.Interaction.GuildId
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+
+        var member = Context.User as GuildInteractionUser;
+        if (member is null)
+        {
+            _logger.LogError("Context.User is not GuildInteractionUser. Actual type: {ActualType}", Context.User.GetType().Name);
+            throw new InvalidOperationException("Guild member data not available in interaction.");
+        }
+
+        var resolvedPermissions = (ulong)member.Permissions;
+        _logger.LogInformation("Resolved permissions for user {UserId}: {Permissions}", Context.User.Id, resolvedPermissions);
+
+        ulong guildOwnerId = 0;
+        var guildName = guildId.ToString();
+        try
+        {
+            var guild = await Context.Client.Rest.GetGuildAsync(guildId);
+            guildOwnerId = guild.OwnerId;
+            guildName = guild.Name;
+            _logger.LogInformation("Guild owner id: {OwnerId}", guildOwnerId);
+        }
+        catch (RestException ex) when (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
+        {
+            _logger.LogWarning(
+                ex,
+                "Bot is not a REST member of guild {GuildId}; using resolved permissions from interaction payload",
+                guildId);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Unexpected error fetching guild {GuildId}", guildId);
+        }
+
+        var timeResult = DiscordNewSessionHandler.ParseTimeInput(time);
+        if (!timeResult.IsSuccess)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($"X {timeResult.Error}"));
+            return;
+        }
+
+        // Defer the response to avoid Discord 3-second interaction timeout
+        await Context.Interaction.SendResponseAsync(InteractionCallback.DeferredMessage());
+
+        try
+        {
+            _logger.LogInformation("Creating session for guild {GuildId}, user {UserId}", guildId, Context.User.Id);
+
+            var view = await _handler.HandleAsync(
+                guildId: guildId.ToString(),
+                channelId: Context.Channel!.Id.ToString(),
+                groupName: guildName,
+                userId: Context.User.Id,
+                userDisplayName: Context.User.GlobalName ?? Context.User.Username,
+                resolvedPermissions: resolvedPermissions,
+                guildOwnerId: guildOwnerId,
+                title: title,
+                scheduledAt: timeResult.Value,
+                maxPlayers: seats is null ? null : (int)seats.Value,
+                joinLink: link,
+                CancellationToken.None);
+
+            _logger.LogInformation("Session created successfully. Building render.");
+
+            var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(view);
+
+            _logger.LogInformation("Sending success response.");
+
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = ":white_check_mark: **Session created successfully!**";
+                message.Embeds = embeds;
+                message.Components = actionRows;
+            });
+
+            _logger.LogInformation("Success response sent.");
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            _logger.LogWarning(ex, "Unauthorized session creation attempt by user {UserId}", Context.User.Id);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $":no_entry: {ex.Message}";
+            });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to create session for user {UserId} in guild {GuildId}", Context.User.Id, guildId);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = ":boom: An error occurred while creating the session.";
+            });
+        }
+    }
+}

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

@@ -0,0 +1,154 @@
+using Dapper;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+using Npgsql;
+using System.Globalization;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed record TimeParseResult(bool IsSuccess, DateTimeOffset Value, string? Error);
+
+public sealed class DiscordNewSessionHandler(
+    NpgsqlDataSource dataSource,
+    DiscordPermissionChecker permissionChecker,
+    ILogger<DiscordNewSessionHandler> logger)
+{
+    private static readonly TimeSpan MoscowOffset = TimeSpan.FromHours(3);
+
+    public static TimeParseResult ParseTimeInput(string input)
+    {
+        var trimmed = input.Trim();
+
+        if (DateTime.TryParseExact(
+            trimmed,
+            "yyyy-MM-dd HH:mm",
+            CultureInfo.InvariantCulture,
+            DateTimeStyles.None,
+            out var dt1))
+        {
+            var offset = new DateTimeOffset(dt1, MoscowOffset).ToUniversalTime();
+            if (offset < DateTimeOffset.UtcNow)
+                return new TimeParseResult(false, default, "Дата находится в прошлом.");
+
+            return new TimeParseResult(true, offset, null);
+        }
+
+        if (DateTime.TryParseExact(
+            trimmed,
+            "dd.MM.yyyy HH:mm",
+            CultureInfo.InvariantCulture,
+            DateTimeStyles.None,
+            out var dt2))
+        {
+            var offset = new DateTimeOffset(dt2, MoscowOffset).ToUniversalTime();
+            if (offset < DateTimeOffset.UtcNow)
+                return new TimeParseResult(false, default, "Дата находится в прошлом.");
+
+            return new TimeParseResult(true, offset, null);
+        }
+
+        return new TimeParseResult(false, default, "Некорректный формат даты. Используйте YYYY-MM-DD HH:mm или DD.MM.YYYY HH:mm");
+    }
+
+    public async Task<SessionBatchViewModel> HandleAsync(
+        string guildId,
+        string channelId,
+        string groupName,
+        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 displayGroupName = string.IsNullOrWhiteSpace(groupName) || string.Equals(groupName, guildId, StringComparison.Ordinal)
+            ? title
+            : groupName.Trim();
+
+        var dbManagerUserIds = await connection.QueryAsync<ulong>(
+            @"SELECT CAST(p.external_user_id AS BIGINT)
+              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);
+        var transactionCommitted = false;
+        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 (@GroupName, 'Discord', @GuildId, @ChannelId)
+                  ON CONFLICT (platform, external_group_id)
+                  WHERE platform IS NOT NULL AND external_group_id IS NOT NULL
+                  DO UPDATE SET name = EXCLUDED.name,
+                                external_channel_id = COALESCE(EXCLUDED.external_channel_id, game_groups.external_channel_id)
+                  RETURNING id",
+                new { GroupName = displayGroupName, 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);
+            transactionCommitted = true;
+            logger.LogInformation("Created session {SessionId} in guild {GuildId}", sessionId, guildId);
+
+            var sessions = new[] { new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned, maxPlayers, joinLink ?? string.Empty) };
+            return SessionBatchViewBuilder.Build(title, sessions, Array.Empty<ParticipantBatchDto>());
+        }
+        catch
+        {
+            if (!transactionCommitted)
+            {
+                await transaction.RollbackAsync(cancellationToken);
+            }
+
+            throw;
+        }
+    }
+}

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

@@ -0,0 +1,154 @@
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+using NetCord;
+using NetCord.Rest;
+using NetCord.Services.ApplicationCommands;
+
+public class DiscordRescheduleCommand : ApplicationCommandModule<SlashCommandContext>
+{
+    private readonly DiscordRescheduleHandler _handler;
+    private readonly ILogger<DiscordRescheduleCommand> _logger;
+
+    public DiscordRescheduleCommand(DiscordRescheduleHandler handler, ILogger<DiscordRescheduleCommand> logger)
+    {
+        _handler = handler;
+        _logger = logger;
+    }
+
+    [SlashCommand("reschedule", "Initiate reschedule voting for a session")]
+    public async Task ExecuteAsync(
+        [SlashCommandParameter(Name = "session", Description = "Session ID to reschedule")] string sessionIdText,
+        [SlashCommandParameter(Name = "option1", Description = "First time option (YYYY-MM-DD HH:mm)")] string option1,
+        [SlashCommandParameter(Name = "option2", Description = "Second time option (YYYY-MM-DD HH:mm)")] string option2,
+        [SlashCommandParameter(Name = "option3", Description = "Third time option (optional)")] string? option3 = null,
+        [SlashCommandParameter(Name = "deadline", Description = "Voting deadline (YYYY-MM-DD HH:mm)")] string deadline = "")
+    {
+        _logger.LogInformation(
+            "reschedule called by user {UserId} ({UserType}) in guild {GuildId}",
+            Context.User.Id,
+            Context.User.GetType().Name,
+            Context.Interaction.GuildId);
+
+        var guildId = Context.Interaction.GuildId
+            ?? throw new InvalidOperationException("This command can only be used in a guild.");
+
+        var member = Context.User as GuildInteractionUser;
+        if (member is null)
+        {
+            _logger.LogError("Context.User is not GuildInteractionUser. Actual type: {ActualType}", Context.User.GetType().Name);
+            throw new InvalidOperationException("Guild member data not available in interaction.");
+        }
+
+        var resolvedPermissions = (ulong)member.Permissions;
+        _logger.LogInformation("Resolved permissions for user {UserId}: {Permissions}", Context.User.Id, resolvedPermissions);
+
+        ulong guildOwnerId = 0;
+        try
+        {
+            var guild = await Context.Client.Rest.GetGuildAsync(guildId);
+            guildOwnerId = guild.OwnerId;
+            _logger.LogInformation("Guild owner id: {OwnerId}", guildOwnerId);
+        }
+        catch (RestException ex) when (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
+        {
+            _logger.LogWarning(
+                ex,
+                "Bot is not a REST member of guild {GuildId}; using resolved permissions from interaction payload",
+                guildId);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Unexpected error fetching guild {GuildId}", guildId);
+        }
+
+        if (!Guid.TryParse(sessionIdText, out var sessionId))
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("❌ Некорректный ID сессии."));
+            return;
+        }
+
+        var options = new List<string> { option1, option2 };
+        if (!string.IsNullOrWhiteSpace(option3))
+            options.Add(option3);
+
+        var parsedOptions = new List<DateTimeOffset>();
+        foreach (var opt in options)
+        {
+            var result = DiscordNewSessionHandler.ParseTimeInput(opt);
+            if (!result.IsSuccess)
+            {
+                await Context.Interaction.SendResponseAsync(
+                    InteractionCallback.Message($"❌ {opt}: {result.Error}"));
+                return;
+            }
+            parsedOptions.Add(result.Value);
+        }
+
+        var deadlineResult = DiscordNewSessionHandler.ParseTimeInput(deadline);
+        if (!deadlineResult.IsSuccess)
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message($"❌ Дедлайн: {deadlineResult.Error}"));
+            return;
+        }
+
+        if (deadlineResult.Value >= parsedOptions.Min())
+        {
+            await Context.Interaction.SendResponseAsync(
+                InteractionCallback.Message("❌ Дедлайн должен быть раньше первого варианта времени."));
+            return;
+        }
+
+        // Defer the response to avoid Discord 3-second interaction timeout
+        await Context.Interaction.SendResponseAsync(InteractionCallback.DeferredMessage());
+
+        try
+        {
+            _logger.LogInformation("Initiating reschedule for session {SessionId} in guild {GuildId}", sessionId, guildId);
+
+            var result = await _handler.HandleAsync(
+                guildId: guildId.ToString(),
+                channelId: Context.Channel!.Id.ToString(),
+                userId: Context.User.Id,
+                userDisplayName: Context.User.GlobalName ?? Context.User.Username,
+                resolvedPermissions: resolvedPermissions,
+                guildOwnerId: guildOwnerId,
+                sessionId: sessionId,
+                options: parsedOptions,
+                deadline: deadlineResult.Value,
+                CancellationToken.None);
+
+            _logger.LogInformation("Reschedule voting started for session {SessionId}, proposal {ProposalId}", sessionId, result.ProposalId);
+
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $"🗳 Голосование за перенос запущено! Дедлайн: {deadlineResult.Value:yyyy-MM-dd HH:mm} UTC.";
+            });
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            _logger.LogWarning(ex, "Unauthorized reschedule attempt by user {UserId}", Context.User.Id);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $":no_entry: {ex.Message}";
+            });
+        }
+        catch (InvalidOperationException ex)
+        {
+            _logger.LogWarning(ex, "Invalid reschedule request by user {UserId}", Context.User.Id);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = $":warning: {ex.Message}";
+            });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to initiate reschedule for session {SessionId}", sessionId);
+            await Context.Interaction.ModifyResponseAsync(message =>
+            {
+                message.Content = ":boom: Ошибка при запуске голосования.";
+            });
+        }
+    }
+}

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

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

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

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

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

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

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

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

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

@@ -0,0 +1,316 @@
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.DiscordBot.Rendering;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Platform;
+using System.Collections;
+using System.Globalization;
+using NetCord;
+using NetCord.Rest;
+using NetCord.Services.ComponentInteractions;
+
+namespace GmRelay.DiscordBot.Features.Sessions;
+
+public sealed class DiscordSessionInteractionModule(
+    JoinSessionHandler joinSessionHandler,
+    LeaveSessionHandler leaveSessionHandler,
+    HandleRsvpHandler rsvpHandler,
+    DiscordDeleteSessionHandler deleteSessionHandler,
+    DiscordRescheduleVoteHandler voteHandler,
+    DiscordInteractionReplyCache interactionReplies,
+    ILogger<DiscordSessionInteractionModule> logger) : ComponentInteractionModule<ButtonInteractionContext>
+{
+    [ComponentInteraction("join_session")]
+    public async Task JoinAsync(string sessionId)
+    {
+        if (!Guid.TryParse(sessionId, out var parsedSessionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(parsedSessionId);
+        await RespondAsync(InteractionCallback.DeferredModifyMessage);
+        SessionInteractionResult result;
+        try
+        {
+            result = await joinSessionHandler.HandleAsync(
+                DiscordSessionInteractionMapper.CreateJoinCommand(input) with { DeferScheduleUpdate = true },
+                CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord join interaction for session {SessionId}", parsedSessionId);
+            await FollowupEphemeralAsync("Не удалось обработать кнопку.");
+            return;
+        }
+
+        await CompleteScheduleUpdateResponseAsync(input.InteractionId, result);
+    }
+
+    [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.DeferredModifyMessage);
+        SessionInteractionResult result;
+        try
+        {
+            result = await leaveSessionHandler.HandleAsync(
+                DiscordSessionInteractionMapper.CreateLeaveCommand(input) with { DeferScheduleUpdate = true },
+                CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord leave interaction for session {SessionId}", parsedSessionId);
+            await FollowupEphemeralAsync("Не удалось обработать кнопку.");
+            return;
+        }
+
+        await CompleteScheduleUpdateResponseAsync(input.InteractionId, result);
+    }
+
+    [ComponentInteraction("delete_session")]
+    public async Task DeleteAsync(string sessionId)
+    {
+        if (!Guid.TryParse(sessionId, out var parsedSessionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(parsedSessionId);
+        var member = Context.User as GuildInteractionUser;
+        var resolvedPermissions = member is null ? 0UL : (ulong)member.Permissions;
+
+        await RespondAsync(InteractionCallback.DeferredModifyMessage);
+        try
+        {
+            var result = await deleteSessionHandler.HandleAsync(
+                guildId: input.GuildId,
+                channelId: input.ChannelId,
+                userId: input.UserId,
+                resolvedPermissions: resolvedPermissions,
+                guildOwnerId: 0,
+                sessionId: parsedSessionId,
+                CancellationToken.None);
+
+            await CompleteDeleteResponseAsync(result);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord delete interaction for session {SessionId}", parsedSessionId);
+            await FollowupEphemeralAsync("Не удалось удалить сессию.");
+        }
+    }
+
+    [ComponentInteraction("rsvp")]
+    public async Task RsvpAsync(string status, string sessionId)
+    {
+        if (!Guid.TryParse(sessionId, out var parsedSessionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var rsvpStatus = status switch
+        {
+            "confirm" => RsvpStatus.Confirmed,
+            "decline" => RsvpStatus.Declined,
+            _ => null
+        };
+
+        if (rsvpStatus is null)
+        {
+            await RespondAsync(CreateEphemeralReply("Session button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(parsedSessionId);
+        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+
+        try
+        {
+            await rsvpHandler.HandleAsync(
+                new HandleRsvpCommand(
+                    parsedSessionId,
+                    new PlatformUser(
+                        PlatformKind.Discord,
+                        Context.User.Id.ToString(CultureInfo.InvariantCulture),
+                        string.IsNullOrWhiteSpace(Context.User.GlobalName) ? Context.User.Username : Context.User.GlobalName,
+                        Context.User.Username),
+                    rsvpStatus,
+                    input.InteractionId,
+                    new PlatformGroup(
+                        PlatformKind.Discord,
+                        input.GuildId,
+                        input.GuildId,
+                        input.ChannelId),
+                    new PlatformMessageRef(
+                        PlatformKind.Discord,
+                        input.GuildId,
+                        null,
+                        input.MessageId)),
+                CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord RSVP interaction for session {SessionId}", parsedSessionId);
+            await CompleteResponseAsync("Не удалось обработать кнопку.");
+            return;
+        }
+
+        await CompleteWithStoredReplyAsync(input.InteractionId);
+    }
+
+    [ComponentInteraction("reschedule_vote")]
+    public async Task RescheduleVoteAsync(string optionId)
+    {
+        if (!Guid.TryParse(optionId, out var parsedOptionId))
+        {
+            await RespondAsync(CreateEphemeralReply("Vote button is outdated."));
+            return;
+        }
+
+        var input = CreateInput(Guid.Empty); // sessionId not needed for vote routing
+        var voteInput = new DiscordRescheduleVoteInput(
+            parsedOptionId,
+            Context.User.Id,
+            Context.Interaction.Id.ToString(System.Globalization.CultureInfo.InvariantCulture),
+            input.GuildId,
+            input.ChannelId,
+            input.MessageId);
+
+        await RespondAsync(InteractionCallback.DeferredMessage(MessageFlags.Ephemeral));
+
+        string replyText;
+        try
+        {
+            replyText = await voteHandler.HandleAsync(voteInput, CancellationToken.None);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Failed to handle Discord reschedule vote for option {OptionId}", parsedOptionId);
+            await CompleteResponseAsync("Не удалось обработать голос.");
+            return;
+        }
+
+        await CompleteResponseAsync(replyText);
+    }
+
+    private DiscordSessionInteractionInput CreateInput(Guid sessionId)
+    {
+        var guildId = Context.Interaction.GuildId?.ToString(CultureInfo.InvariantCulture)
+            ?? throw new InvalidOperationException("Session buttons can only be used in a guild.");
+        var message = Context.Interaction.Message
+            ?? throw new InvalidOperationException("Session button interaction must include a message.");
+
+        return new DiscordSessionInteractionInput(
+            SessionId: sessionId,
+            InteractionId: Context.Interaction.Id.ToString(System.Globalization.CultureInfo.InvariantCulture),
+            GuildId: guildId,
+            ChannelId: Context.Channel.Id.ToString(CultureInfo.InvariantCulture),
+            MessageId: message.Id.ToString(CultureInfo.InvariantCulture),
+            UserId: Context.User.Id,
+            Username: Context.User.Username,
+            DisplayName: Context.User.GlobalName);
+    }
+
+    private async Task CompleteWithStoredReplyAsync(string interactionId)
+    {
+        var reply = interactionReplies.Take(interactionId);
+        await CompleteResponseAsync(reply?.Text ?? "Session updated.");
+    }
+
+    private async Task CompleteScheduleUpdateResponseAsync(string interactionId, SessionInteractionResult result)
+    {
+        var updatedView = result.UpdatedView;
+        if (updatedView is not null && SourceMessageHasDeleteAction())
+        {
+            updatedView = DiscordListSessionsHandler.AddManagerActions(updatedView);
+        }
+
+        if (updatedView is not null)
+        {
+            var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(updatedView);
+            await ModifyResponseAsync(options =>
+            {
+                options.Embeds = embeds;
+                options.Components = actionRows;
+            });
+        }
+
+        var reply = interactionReplies.Take(interactionId);
+        await FollowupEphemeralAsync(reply?.Text ?? result.ReplyText);
+    }
+
+    private async Task CompleteDeleteResponseAsync(DiscordDeleteSessionResult result)
+    {
+        if (result.UpdatedView is not null)
+        {
+            var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(result.UpdatedView);
+            await ModifyResponseAsync(options =>
+            {
+                options.Embeds = embeds;
+                options.Components = actionRows;
+            });
+        }
+        else if (result.EmptyMessage is not null)
+        {
+            await ModifyResponseAsync(options =>
+            {
+                options.Content = result.EmptyMessage;
+                options.Embeds = [];
+                options.Components = [];
+            });
+        }
+
+        await FollowupEphemeralAsync(result.ReplyText);
+    }
+
+    private Task CompleteResponseAsync(string text) =>
+        ModifyResponseAsync(options => options.Content = text);
+
+    private Task FollowupEphemeralAsync(string text) =>
+        FollowupAsync(new InteractionMessageProperties()
+            .WithContent(text)
+            .WithFlags(MessageFlags.Ephemeral));
+
+    private bool SourceMessageHasDeleteAction() =>
+        Context.Interaction.Message?.Components.Any(ComponentContainsDeleteAction) == true;
+
+    private static bool ComponentContainsDeleteAction(object? component)
+    {
+        if (component is null)
+            return false;
+
+        if (component is IInteractiveComponent interactive
+            && interactive.CustomId.StartsWith("delete_session:", StringComparison.Ordinal))
+            return true;
+
+        var nestedComponents = component.GetType().GetProperty("Components")?.GetValue(component) as IEnumerable;
+        if (nestedComponents is null)
+            return false;
+
+        foreach (var nestedComponent in nestedComponents)
+        {
+            if (ComponentContainsDeleteAction(nestedComponent))
+                return true;
+        }
+
+        return false;
+    }
+
+    private static InteractionCallbackProperties CreateEphemeralReply(string text) =>
+        InteractionCallback.Message(
+            new InteractionMessageProperties()
+                .WithContent(text)
+                .WithFlags(MessageFlags.Ephemeral));
+}

src/GmRelay.DiscordBot/GmRelay.DiscordBot.csproj

@@ -0,0 +1,28 @@
+<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>
+    <!-- DiscordBot uses vanilla Dapper in its own handlers; DAP005 requires AOT-enabled Dapper -->
+    <NoWarn>$(NoWarn);DAP005</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Aspire.Npgsql" Version="13.2.2" />
+    <PackageReference Include="Dapper" Version="2.1.72" />
+    <PackageReference Include="Dapper.AOT" Version="1.0.48" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.5" />
+    <PackageReference Include="NetCord.Hosting" Version="1.0.0-alpha.489" />
+    <PackageReference Include="NetCord.Hosting.Services" Version="1.0.0-alpha.489" />
+    <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 +1,408 @@
+using System.Globalization;
+using System.Text;
+using GmRelay.DiscordBot.Rendering;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Platform;
+using GmRelay.Shared.Rendering;
+using Microsoft.Extensions.Logging;
+using NetCord;
+using NetCord.Rest;
+
+namespace GmRelay.DiscordBot.Infrastructure.Discord;
+
+public sealed class DiscordPlatformMessenger : IPlatformMessenger
+{
+    private readonly RestClient restClient;
+    private readonly DiscordInteractionReplyCache interactionReplies;
+    private readonly ILogger<DiscordPlatformMessenger>? logger;
+
+    public DiscordPlatformMessenger(
+        RestClient restClient,
+        DiscordInteractionReplyCache interactionReplies)
+        : this(restClient, interactionReplies, logger: null)
+    {
+    }
+
+    public DiscordPlatformMessenger(
+        RestClient restClient,
+        DiscordInteractionReplyCache interactionReplies,
+        ILogger<DiscordPlatformMessenger>? logger)
+    {
+        this.restClient = restClient;
+        this.interactionReplies = interactionReplies;
+        this.logger = logger;
+    }
+
+    public async Task<PlatformMessageRef> SendScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(message.View);
+
+        var channelId = GetChannelId(message.Group);
+
+        var msg = await restClient.SendMessageAsync(
+            channelId,
+            new MessageProperties()
+                .WithEmbeds(embeds)
+                .WithComponents(actionRows));
+
+        return new PlatformMessageRef(
+            PlatformKind.Discord,
+            message.Group.ExternalGroupId,
+            null,
+            msg.Id.ToString(CultureInfo.InvariantCulture));
+    }
+
+    public async Task UpdateScheduleAsync(PlatformScheduleMessage message, CancellationToken ct)
+    {
+        if (message.ExistingMessage is null)
+            return;
+
+        var (embeds, actionRows) = DiscordSessionBatchRenderer.Render(message.View);
+
+        var channelId = GetChannelId(message.Group);
+        var messageId = ParseSnowflake(message.ExistingMessage.ExternalMessageId);
+
+        await restClient.ModifyMessageAsync(
+            channelId,
+            messageId,
+            options =>
+            {
+                options.Embeds = embeds;
+                options.Components = actionRows;
+            });
+    }
+
+    public async Task SendGroupMessageAsync(PlatformGroup group, string htmlText, CancellationToken ct)
+    {
+        await restClient.SendMessageAsync(GetChannelId(group), htmlText);
+    }
+
+    public async Task SendPrivateMessageAsync(PlatformPrivateMessage message, CancellationToken ct)
+    {
+        await SendDirectContentAsync(message.Recipient, message.HtmlText, ct);
+    }
+
+    public Task AnswerInteractionAsync(PlatformInteractionReply reply, CancellationToken ct)
+    {
+        interactionReplies.Store(reply);
+        return Task.CompletedTask;
+    }
+
+    public Task SendCalendarFileAsync(PlatformCalendarFile file, CancellationToken ct)
+    {
+        return Task.CompletedTask;
+    }
+
+    public async Task<PlatformMessageRef> SendConfirmationRequestAsync(
+        PlatformConfirmationRequest request,
+        CancellationToken ct)
+    {
+        var channelId = GetChannelId(request.Group);
+        try
+        {
+            var message = await restClient.SendMessageAsync(
+                channelId,
+                new MessageProperties()
+                    .WithEmbeds([BuildConfirmationEmbed(request)])
+                    .WithComponents(BuildRsvpRows(request.SessionId, disabled: false)));
+
+            logger?.LogInformation(
+                "Confirmation request sent to Discord channel {ChannelId}, message id {MessageId}",
+                channelId,
+                message.Id);
+
+            return new PlatformMessageRef(
+                PlatformKind.Discord,
+                request.Group.ExternalGroupId,
+                null,
+                message.Id.ToString(CultureInfo.InvariantCulture));
+        }
+        catch (Exception ex)
+        {
+            logger?.LogError(
+                ex,
+                "Failed to send confirmation request to Discord channel {ChannelId} for session {SessionId}",
+                channelId,
+                request.SessionId);
+            throw;
+        }
+    }
+
+    public async Task UpdateConfirmationRequestAsync(PlatformRsvpMessageUpdate update, CancellationToken ct)
+    {
+        if (update.Request.ExistingMessage is null)
+            return;
+
+        var channelId = GetChannelId(update.Request.Group);
+        var messageId = ParseSnowflake(update.Request.ExistingMessage.ExternalMessageId);
+        var components = BuildRsvpRows(update.Request.SessionId, update.DisableActions);
+
+        await restClient.ModifyMessageAsync(
+            channelId,
+            messageId,
+            options =>
+            {
+                options.Embeds = [BuildConfirmationEmbed(update.Request)];
+                options.Components = components;
+            });
+    }
+
+    public async Task<PlatformMessageRef> SendJoinLinkNotificationAsync(
+        PlatformJoinLinkNotification notification,
+        CancellationToken ct)
+    {
+        var channelId = GetChannelId(notification.Group);
+        try
+        {
+            var message = await restClient.SendMessageAsync(
+                channelId,
+                new MessageProperties().WithEmbeds([BuildJoinLinkEmbed(notification)]));
+
+            logger?.LogInformation(
+                "Join link sent to Discord channel {ChannelId}, message id {MessageId}",
+                channelId,
+                message.Id);
+
+            return new PlatformMessageRef(
+                PlatformKind.Discord,
+                notification.Group.ExternalGroupId,
+                null,
+                message.Id.ToString(CultureInfo.InvariantCulture));
+        }
+        catch (Exception ex)
+        {
+            logger?.LogError(
+                ex,
+                "Failed to send join link to Discord channel {ChannelId} for session {SessionId}",
+                channelId,
+                notification.SessionId);
+            throw;
+        }
+    }
+
+    public async Task SendDirectSessionNotificationAsync(
+        PlatformDirectSessionNotification notification,
+        CancellationToken ct)
+    {
+        try
+        {
+            await SendDirectContentAsync(
+                notification.Recipient,
+                BuildDirectContent(notification),
+                ct);
+        }
+        catch (Exception ex)
+        {
+            logger?.LogWarning(
+                ex,
+                "Failed to send Discord direct notification {NotificationKind} for session {SessionId} to user {ExternalUserId}",
+                notification.Kind,
+                notification.SessionId,
+                notification.Recipient.ExternalUserId);
+        }
+    }
+
+    public async Task SendRsvpOutcomeAsync(PlatformRsvpOutcomeNotification notification, CancellationToken ct)
+    {
+        if (notification.Kind == PlatformRsvpOutcomeKind.GroupAllConfirmed && notification.Group is not null)
+        {
+            await restClient.SendMessageAsync(
+                GetChannelId(notification.Group),
+                BuildRsvpGroupOutcomeContent(notification));
+            return;
+        }
+
+        var directKind = notification.Kind == PlatformRsvpOutcomeKind.GmPlayerDeclined
+            ? PlatformDirectSessionNotificationKind.RsvpDeclined
+            : PlatformDirectSessionNotificationKind.RsvpAllConfirmed;
+
+        foreach (var recipient in notification.Recipients)
+        {
+            await SendDirectSessionNotificationAsync(
+                new PlatformDirectSessionNotification(
+                    directKind,
+                    recipient,
+                    notification.SessionId,
+                    notification.Title,
+                    notification.ScheduledAt,
+                    ActorDisplayName: notification.ActorDisplayName),
+                ct);
+        }
+    }
+
+    public async Task UpdateRescheduleVoteAsync(PlatformRescheduleVoteUpdate update, CancellationToken ct)
+    {
+        var (embed, actionRow) = DiscordRescheduleVotingRenderer.Render(
+            update.Title,
+            update.CurrentScheduledAt,
+            update.VotingDeadlineAt,
+            update.Options,
+            update.Participants,
+            update.Votes);
+
+        var disabledRow = new ActionRowProperties();
+        foreach (var button in actionRow.OfType<ButtonProperties>())
+        {
+            disabledRow.Add(new ButtonProperties(
+                button.CustomId,
+                button.Label ?? string.Empty,
+                ButtonStyle.Secondary)
+            {
+                Disabled = true
+            });
+        }
+
+        var updatedEmbed = embed.WithDescription(
+            $"{embed.Description}\n\n{BuildRescheduleResultText(update)}");
+
+        await restClient.ModifyMessageAsync(
+            GetChannelId(update.Group),
+            ParseSnowflake(update.ExistingMessage.ExternalMessageId),
+            options =>
+            {
+                options.Embeds = [updatedEmbed];
+                options.Components = [disabledRow];
+            });
+    }
+
+    private static EmbedProperties BuildConfirmationEmbed(PlatformConfirmationRequest request)
+    {
+        var embed = new EmbedProperties()
+            .WithTitle($"Подтверждение: {request.Title}")
+            .WithDescription(BuildConfirmationDescription(request))
+            .WithColor(new Color(0x5865F2));
+
+        return embed.AddFields(
+        [
+            BuildParticipantField("Подтвердили", request.Participants, RsvpStatus.Confirmed),
+            BuildParticipantField("Отказались", request.Participants, RsvpStatus.Declined),
+            BuildParticipantField("Ожидаем ответ", request.Participants, RsvpStatus.Pending)
+        ]);
+    }
+
+    private static string BuildConfirmationDescription(PlatformConfirmationRequest request) =>
+        $"Время: **{request.ScheduledAt.FormatMoscow()}** (МСК)\n" +
+        "Подтвердите участие кнопкой ниже.";
+
+    private static EmbedFieldProperties BuildParticipantField(
+        string title,
+        IReadOnlyList<PlatformSessionParticipant> participants,
+        string status)
+    {
+        var values = participants
+            .Where(participant => participant.RsvpStatus == status)
+            .Select(FormatDiscordParticipant)
+            .ToList();
+
+        return new EmbedFieldProperties()
+            .WithName(title)
+            .WithValue(values.Count == 0 ? "—" : string.Join("\n", values))
+            .WithInline();
+    }
+
+    private static EmbedProperties BuildJoinLinkEmbed(PlatformJoinLinkNotification notification)
+    {
+        var mentions = notification.ConfirmedPlayers.Count == 0
+            ? "—"
+            : string.Join(", ", notification.ConfirmedPlayers.Select(p => Mention(p.User)));
+
+        var embed = new EmbedProperties()
+            .WithTitle($"Ссылка на игру: {notification.Title}")
+            .WithDescription(
+                $"Время: **{notification.ScheduledAt.FormatMoscow()}** (МСК)\n" +
+                $"Ссылка: {notification.JoinLink}\n\n" +
+                $"Участники: {mentions}")
+            .WithColor(new Color(0x57F287));
+
+        var embedUrl = DiscordEmbedUrls.NormalizeHttpUrl(notification.JoinLink);
+        return embedUrl is null ? embed : embed.WithUrl(embedUrl);
+    }
+
+    private static IReadOnlyList<ActionRowProperties> BuildRsvpRows(Guid sessionId, bool disabled)
+    {
+        var row = new ActionRowProperties();
+        row.Add(new ButtonProperties($"rsvp:confirm:{sessionId}", "Буду", ButtonStyle.Success)
+        {
+            Disabled = disabled
+        });
+        row.Add(new ButtonProperties($"rsvp:decline:{sessionId}", "Не смогу", ButtonStyle.Danger)
+        {
+            Disabled = disabled
+        });
+
+        return [row];
+    }
+
+    private static string BuildDirectContent(PlatformDirectSessionNotification notification)
+    {
+        var builder = new StringBuilder();
+        builder.AppendLine(notification.Kind switch
+        {
+            PlatformDirectSessionNotificationKind.ConfirmationRequest => "Нужно подтвердить участие",
+            PlatformDirectSessionNotificationKind.OneHourReminder => "Напоминание: сессия через час",
+            PlatformDirectSessionNotificationKind.JoinLink => "Ссылка на игру",
+            PlatformDirectSessionNotificationKind.RsvpAllConfirmed => "Все игроки подтвердили участие",
+            PlatformDirectSessionNotificationKind.RsvpDeclined => "Игрок отказался от участия",
+            PlatformDirectSessionNotificationKind.RescheduleApproved => "Сессия перенесена",
+            PlatformDirectSessionNotificationKind.RescheduleRejected => "Перенос сессии отклонен",
+            _ => "Уведомление по сессии"
+        });
+
+        builder.AppendLine();
+        builder.AppendLine($"**{notification.Title}**");
+        builder.AppendLine($"Время: **{notification.ScheduledAt.FormatMoscow()}** (МСК)");
+
+        if (!string.IsNullOrWhiteSpace(notification.JoinLink))
+            builder.AppendLine($"Ссылка: {notification.JoinLink}");
+
+        if (!string.IsNullOrWhiteSpace(notification.ActorDisplayName))
+            builder.AppendLine($"Игрок: {notification.ActorDisplayName}");
+
+        if (!string.IsNullOrWhiteSpace(notification.Reason))
+            builder.AppendLine($"Причина: {notification.Reason}");
+
+        return builder.ToString();
+    }
+
+    private static string BuildRsvpGroupOutcomeContent(PlatformRsvpOutcomeNotification notification) =>
+        $"Все участники подтвердили сессию **{notification.Title}** на " +
+        $"**{notification.ScheduledAt.FormatMoscow()}** (МСК).";
+
+    private static string BuildRescheduleResultText(PlatformRescheduleVoteUpdate update)
+    {
+        if (update.SelectedOption is not null)
+        {
+            return "Голосование завершено. " +
+                $"Победил вариант {update.SelectedOption.DisplayOrder}: " +
+                $"**{update.SelectedOption.ProposedAt.FormatMoscow()}** (МСК).";
+        }
+
+        return $"Голосование завершено. {update.Decision.Reason}";
+    }
+
+    private async Task SendDirectContentAsync(PlatformUser recipient, string content, CancellationToken ct)
+    {
+        var userId = ParseSnowflake(recipient.ExternalUserId);
+        var dm = await restClient.GetDMChannelAsync(userId, cancellationToken: ct);
+        await restClient.SendMessageAsync(
+            dm.Id,
+            new MessageProperties().WithContent(content),
+            cancellationToken: ct);
+    }
+
+    private static string FormatDiscordParticipant(PlatformSessionParticipant participant) =>
+        $"{Mention(participant.User)} ({participant.User.DisplayName})";
+
+    private static string Mention(PlatformUser user) => $"<@{user.ExternalUserId}>";
+
+    private static ulong GetChannelId(PlatformGroup group)
+    {
+        var channelId = group.ExternalChannelId ?? group.ExternalGroupId
+            ?? throw new InvalidOperationException("Discord group has no channel or group identifier.");
+
+        return ParseSnowflake(channelId);
+    }
+
+    private static ulong ParseSnowflake(string value) =>
+        ulong.Parse(value, CultureInfo.InvariantCulture);
+}

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

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

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

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

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

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

src/GmRelay.DiscordBot/Infrastructure/SystemClock.cs

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

src/GmRelay.DiscordBot/Program.cs

@@ -0,0 +1,99 @@
+using GmRelay.DiscordBot;
+using GmRelay.DiscordBot.Features.Sessions;
+using GmRelay.DiscordBot.Infrastructure;
+using GmRelay.DiscordBot.Infrastructure.Discord;
+using GmRelay.DiscordBot.Infrastructure.Health;
+using GmRelay.DiscordBot.Infrastructure.Logging;
+using GmRelay.Shared.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Features.Confirmation.SendConfirmation;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Features.Reminders.SendJoinLink;
+using GmRelay.Shared.Features.Reminders.SendOneHourReminder;
+using GmRelay.Shared.Features.Sessions.CreateSession;
+using GmRelay.Shared.Features.Sessions.RescheduleSession;
+using GmRelay.Shared.Infrastructure.Scheduling;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using NetCord;
+using NetCord.Gateway;
+using NetCord.Hosting.Gateway;
+using NetCord.Hosting.Services;
+using NetCord.Hosting.Services.ApplicationCommands;
+using NetCord.Hosting.Services.ComponentInteractions;
+using NetCord.Services.ApplicationCommands;
+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.Logging.AddConsole();
+
+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<DiscordDeleteSessionHandler>();
+builder.Services.AddSingleton<DiscordNewSessionHandler>();
+builder.Services.AddSingleton<DiscordRescheduleHandler>();
+builder.Services.AddSingleton<DiscordRescheduleVoteHandler>();
+builder.Services.AddSingleton<IScheduleMessageUpdateLock, ScheduleMessageUpdateLock>();
+builder.Services.AddSingleton<JoinSessionHandler>();
+builder.Services.AddSingleton<LeaveSessionHandler>();
+builder.Services.AddSingleton<DiscordInteractionReplyCache>();
+builder.Services.AddSingleton<IPlatformMessenger, DiscordPlatformMessenger>();
+builder.Services.AddSingleton<ISystemClock, SystemClock>();
+builder.Services.AddSingleton(new PlatformSchedulerOptions(PlatformKind.Discord));
+builder.Services.AddSingleton<ISessionTriggerStore, DbSessionTriggerStore>();
+builder.Services.AddSingleton<PlatformDirectNotificationSender>();
+builder.Services.AddSingleton<SendConfirmationHandler>();
+builder.Services.AddSingleton<ISendConfirmationHandler>(sp => sp.GetRequiredService<SendConfirmationHandler>());
+builder.Services.AddSingleton<SendJoinLinkHandler>();
+builder.Services.AddSingleton<ISendJoinLinkHandler>(sp => sp.GetRequiredService<SendJoinLinkHandler>());
+builder.Services.AddSingleton<SendOneHourReminderHandler>();
+builder.Services.AddSingleton<ISendOneHourReminderHandler>(sp => sp.GetRequiredService<SendOneHourReminderHandler>());
+builder.Services.AddSingleton<HandleRsvpHandler>();
+builder.Services.AddSingleton<RescheduleVotingFinalizer>();
+builder.Services.AddHostedService<SessionSchedulerService>();
+builder.Services.AddHostedService<DiscordRescheduleVotingDeadlineService>();
+builder.Services.AddHostedService<DiscordHealthCheckHostedService>();
+
+builder.Services
+    .AddDiscordGateway(options =>
+    {
+        options.Token = discordOptions.Token;
+        options.Intents = GatewayIntents.Guilds;
+    })
+    .AddApplicationCommands<SlashCommandInteraction, SlashCommandContext>()
+    .AddComponentInteractions<ButtonInteraction, ButtonInteractionContext>()
+    .AddGatewayHandlers(typeof(Program).Assembly);
+
+var host = builder.Build();
+
+host.AddSlashCommand("ping", "Checks whether GM-Relay Discord is online.", () => "Pong!");
+host.AddModules(typeof(Program).Assembly);
+
+await host.RunAsync();

src/GmRelay.DiscordBot/Rendering/DiscordEmbedUrls.cs

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

src/GmRelay.DiscordBot/Rendering/DiscordRescheduleVotingRenderer.cs

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

src/GmRelay.DiscordBot/Rendering/DiscordSessionBatchRenderer.cs

@@ -0,0 +1,126 @@
+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()
+        };
+
+        var embedUrl = DiscordEmbedUrls.NormalizeHttpUrl(session.JoinLink);
+        if (embedUrl is not null)
+        {
+            embed = embed.WithUrl(embedUrl);
+        }
+
+        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 +1,685 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Aspire.Npgsql": {
+        "type": "Direct",
+        "requested": "[13.2.2, )",
+        "resolved": "13.2.2",
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+        "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=="
+      },
+      "Microsoft.Extensions.Hosting": {
+        "type": "Direct",
+        "requested": "[10.0.5, )",
+        "resolved": "10.0.5",
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+        "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",
+          "Microsoft.Extensions.Hosting.Abstractions": "10.0.8",
+          "Microsoft.Extensions.Options.ConfigurationExtensions": "10.0.8",
+          "Microsoft.Extensions.Options.DataAnnotations": "10.0.8",
+          "NetCord": "1.0.0-alpha.489"
+        }
+      },
+      "NetCord.Hosting.Services": {
+        "type": "Direct",
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+        "resolved": "1.0.0-alpha.489",
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+        "dependencies": {
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+          "Microsoft.Extensions.Hosting.Abstractions": "10.0.8",
+          "Microsoft.Extensions.Options.ConfigurationExtensions": "10.0.8",
+          "Microsoft.Extensions.Options.DataAnnotations": "10.0.8",
+          "NetCord.Hosting": "1.0.0-alpha.489",
+          "NetCord.Services": "1.0.0-alpha.489"
+        }
+      },
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+        "dependencies": {
+          "NetCord": "1.0.0-alpha.489"
+        }
+      },
+      "Npgsql": {
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+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.0"
+        }
+      },
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+        "requested": "[5.6.7, )",
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+      },
+      "AspNetCore.HealthChecks.NpgSql": {
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+        "dependencies": {
+          "Microsoft.Extensions.Diagnostics.HealthChecks": "8.0.11",
+          "Npgsql": "8.0.3"
+        }
+      },
+      "Microsoft.Extensions.AmbientMetadata.Application": {
+        "type": "Transitive",
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+        "dependencies": {
+          "Microsoft.Extensions.Configuration": "10.0.2",
+          "Microsoft.Extensions.Hosting.Abstractions": "10.0.2",
+          "Microsoft.Extensions.Options.ConfigurationExtensions": "10.0.2"
+        }
+      },
+      "Microsoft.Extensions.Compliance.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.2.0",
+        "contentHash": "1a4xDAT6fRyP8t419q3WvWMmMslDTvI7OAZLWBhn5rysFG0bl5xFenTswd1xAbT/3u3mx4Xyb5bPx+V+18tJeQ==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.2",
+          "Microsoft.Extensions.ObjectPool": "10.0.2"
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+          "OpenTelemetry.API": "1.14.0"
+        }
+      },
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+        }
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+        }
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+        "dependencies": {
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+        }
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+        "dependencies": {
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+        }
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+      "OpenTelemetry.Instrumentation.AspNetCore": {
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+        "dependencies": {
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+        }
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+        "dependencies": {
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+        "dependencies": {
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+        }
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+        "dependencies": {
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+        }
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+        "dependencies": {
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+        }
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+      "System.Diagnostics.EventLog": {
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+      },
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+        "type": "Transitive",
+        "resolved": "8.0.0",
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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.Hosting.Abstractions": "[10.0.5, )",
+          "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": {
+      "Microsoft.Extensions.Http.Resilience": {
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+        "requested": "[10.2.0, )",
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+        "dependencies": {
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+          "Microsoft.Extensions.Resilience": "10.2.0"
+        }
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+        "dependencies": {
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+        }
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+        "dependencies": {
+          "OpenTelemetry": "1.15.3"
+        }
+      },
+      "OpenTelemetry.Extensions.Hosting": {
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+        "requested": "[1.15.3, )",
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+        "dependencies": {
+          "OpenTelemetry": "1.15.3"
+        }
+      },
+      "OpenTelemetry.Instrumentation.AspNetCore": {
+        "type": "Direct",
+        "requested": "[1.15.2, )",
+        "resolved": "1.15.2",
+        "contentHash": "2nPd7r0ug/gd6/CNFL6Rlu+RSQ9WYGSGHAYQ1ssbSqyzKJpqTunfx2I/1O0WB5k+L0cyXbG4XVZpoSoUc3M7wg==",
+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "[1.15.3, 2.0.0)"
+        }
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+      "OpenTelemetry.Instrumentation.Http": {
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+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "[1.15.3, 2.0.0)"
+        }
+      },
+      "OpenTelemetry.Instrumentation.Runtime": {
+        "type": "Direct",
+        "requested": "[1.15.1, )",
+        "resolved": "1.15.1",
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+        "dependencies": {
+          "OpenTelemetry.Api": "[1.15.3, 2.0.0)"
+        }
+      },
+      "SecurityCodeScan.VS2019": {
+        "type": "Direct",
+        "requested": "[5.6.7, )",
+        "resolved": "5.6.7",
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+      },
+      "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.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.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"
+        }
+      },
+      "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/Confirmation/HandleRsvp/HandleRsvpHandler.cs

@@ -0,0 +1,346 @@
+using System.Globalization;
+using Dapper;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Notifications;
+using GmRelay.Shared.Platform;
+using Microsoft.Extensions.Logging;
+using Npgsql;
+
+namespace GmRelay.Shared.Features.Confirmation.HandleRsvp;
+
+public sealed record HandleRsvpCommand(
+    Guid SessionId,
+    PlatformUser User,
+    string Status,
+    string InteractionId,
+    PlatformGroup Group,
+    PlatformMessageRef ConfirmationMessage);
+
+internal sealed record RsvpCounts(int Total, int Confirmed, int Declined);
+
+internal sealed record RsvpSessionContext(
+    Guid GroupId,
+    string Title,
+    DateTime ScheduledAt,
+    string Status);
+
+internal sealed record ParticipantRsvpRow(
+    string Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername,
+    string RsvpStatus,
+    string RegistrationStatus,
+    bool IsGm);
+
+internal sealed record RsvpRecipientRow(
+    string Platform,
+    string ExternalUserId,
+    string DisplayName,
+    string? ExternalUsername);
+
+public sealed class HandleRsvpHandler(
+    NpgsqlDataSource dataSource,
+    IPlatformMessenger messenger,
+    ILogger<HandleRsvpHandler> logger)
+{
+    public async Task HandleAsync(HandleRsvpCommand command, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+        await using var transaction = await connection.BeginTransactionAsync(ct);
+
+        var participantExists = await connection.ExecuteScalarAsync<bool>(
+            """
+            SELECT EXISTS (
+                SELECT 1
+                FROM session_participants sp
+                JOIN players p ON p.id = sp.player_id
+                WHERE sp.session_id = @SessionId
+                  AND p.platform = @Platform
+                  AND p.external_user_id = @ExternalUserId
+                  AND sp.is_gm = false
+                  AND sp.registration_status = @Active
+            )
+            """,
+            new
+            {
+                command.SessionId,
+                Platform = command.User.Platform.ToString(),
+                command.User.ExternalUserId,
+                Active = ParticipantRegistrationStatus.Active
+            },
+            transaction);
+
+        if (!participantExists)
+        {
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(
+                    command.InteractionId,
+                    "Вы не являетесь участником этой сессии."),
+                ct);
+            return;
+        }
+
+        var updated = await connection.ExecuteAsync(
+            """
+            UPDATE session_participants
+            SET    rsvp_status  = @Status,
+                   responded_at = now()
+            WHERE  session_id = @SessionId
+              AND  player_id = (
+                    SELECT id
+                    FROM players
+                    WHERE platform = @Platform
+                      AND external_user_id = @ExternalUserId
+                    LIMIT 1
+              )
+              AND  registration_status = @Active
+              AND  rsvp_status != @Status
+            """,
+            new
+            {
+                command.SessionId,
+                command.Status,
+                Platform = command.User.Platform.ToString(),
+                command.User.ExternalUserId,
+                Active = ParticipantRegistrationStatus.Active
+            },
+            transaction);
+
+        if (updated == 0)
+        {
+            var alreadyText = command.Status == RsvpStatus.Confirmed
+                ? "Вы уже подтвердили участие."
+                : "Вы уже отказались от участия.";
+
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.InteractionId, alreadyText),
+                ct);
+            return;
+        }
+
+        var session = await connection.QuerySingleAsync<RsvpSessionContext>(
+            """
+            SELECT s.group_id AS GroupId,
+                   s.title,
+                   s.scheduled_at AS ScheduledAt,
+                   s.status AS Status
+            FROM sessions s
+            WHERE s.id = @SessionId
+            """,
+            new { command.SessionId },
+            transaction);
+
+        if (command.Status == RsvpStatus.Declined)
+        {
+            var decision = RsvpFlowRules.Evaluate(
+                command.Status,
+                session.Status,
+                totalParticipants: 0,
+                confirmedParticipants: 0);
+
+            if (decision.ShouldRevertSessionToConfirmationSent)
+            {
+                await connection.ExecuteAsync(
+                    """
+                    UPDATE sessions
+                    SET    status = @ConfirmationSent, updated_at = now()
+                    WHERE  id = @SessionId AND status = @Confirmed
+                    """,
+                    new
+                    {
+                        command.SessionId,
+                        ConfirmationSent = SessionStatus.ConfirmationSent,
+                        Confirmed = SessionStatus.Confirmed
+                    },
+                    transaction);
+            }
+
+            var gmRecipients = (await GetGmRecipientsAsync(connection, session.GroupId, transaction))
+                .ToList();
+
+            await transaction.CommitAsync(ct);
+
+            if (gmRecipients.Count > 0)
+            {
+                await messenger.SendRsvpOutcomeAsync(
+                    new PlatformRsvpOutcomeNotification(
+                        PlatformRsvpOutcomeKind.GmPlayerDeclined,
+                        Group: null,
+                        gmRecipients,
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt,
+                        ActorDisplayName: command.User.DisplayName),
+                    ct);
+            }
+
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.InteractionId, decision.CallbackText),
+                ct);
+        }
+        else
+        {
+            var counts = await connection.QuerySingleAsync<RsvpCounts>(
+                """
+                SELECT
+                    count(*)                                         AS Total,
+                    count(*) FILTER (WHERE rsvp_status = @Confirmed) AS Confirmed,
+                    count(*) FILTER (WHERE rsvp_status = @Declined)  AS Declined
+                FROM session_participants
+                WHERE session_id = @SessionId AND is_gm = false
+                  AND registration_status = @Active
+                """,
+                new
+                {
+                    command.SessionId,
+                    Confirmed = RsvpStatus.Confirmed,
+                    Declined = RsvpStatus.Declined,
+                    Active = ParticipantRegistrationStatus.Active
+                },
+                transaction);
+
+            var decision = RsvpFlowRules.Evaluate(command.Status, session.Status, counts.Total, counts.Confirmed);
+
+            if (decision.ShouldMarkSessionConfirmed)
+            {
+                await connection.ExecuteAsync(
+                    """
+                    UPDATE sessions
+                    SET    status = @Confirmed, updated_at = now()
+                    WHERE  id = @SessionId
+                    """,
+                    new { command.SessionId, Confirmed = SessionStatus.Confirmed },
+                    transaction);
+            }
+
+            var gmRecipients = decision.ShouldNotifyGm
+                ? (await GetGmRecipientsAsync(connection, session.GroupId, transaction)).ToList()
+                : [];
+
+            await transaction.CommitAsync(ct);
+
+            if (decision.ShouldNotifyGroup)
+            {
+                await messenger.SendRsvpOutcomeAsync(
+                    new PlatformRsvpOutcomeNotification(
+                        PlatformRsvpOutcomeKind.GroupAllConfirmed,
+                        command.Group,
+                        [],
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt),
+                    ct);
+            }
+
+            if (decision.ShouldNotifyGm && gmRecipients.Count > 0)
+            {
+                await messenger.SendRsvpOutcomeAsync(
+                    new PlatformRsvpOutcomeNotification(
+                        PlatformRsvpOutcomeKind.GmAllConfirmed,
+                        Group: null,
+                        gmRecipients,
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt),
+                    ct);
+            }
+
+            await messenger.AnswerInteractionAsync(
+                new PlatformInteractionReply(command.InteractionId, decision.CallbackText),
+                ct);
+        }
+
+        await UpdateConfirmationMessage(command, session, ct);
+    }
+
+    private async Task UpdateConfirmationMessage(
+        HandleRsvpCommand command,
+        RsvpSessionContext session,
+        CancellationToken ct)
+    {
+        try
+        {
+            await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+            var participants = (await connection.QueryAsync<ParticipantRsvpRow>(
+                """
+                SELECT p.platform AS Platform,
+                       p.external_user_id AS ExternalUserId,
+                       p.display_name AS DisplayName,
+                       p.external_username AS ExternalUsername,
+                       sp.rsvp_status AS RsvpStatus,
+                       sp.registration_status AS RegistrationStatus,
+                       sp.is_gm AS IsGm
+                FROM session_participants sp
+                JOIN players p ON p.id = sp.player_id
+                WHERE sp.session_id = @SessionId
+                  AND sp.is_gm = false
+                  AND sp.registration_status = @Active
+                ORDER BY sp.responded_at NULLS LAST
+                """,
+                new { command.SessionId, Active = ParticipantRegistrationStatus.Active }))
+                .Select(ToParticipant)
+                .ToList();
+
+            var disableActions = participants.Count > 0 &&
+                participants.All(participant => participant.RsvpStatus == RsvpStatus.Confirmed);
+
+            await messenger.UpdateConfirmationRequestAsync(
+                new PlatformRsvpMessageUpdate(
+                    new PlatformConfirmationRequest(
+                        command.Group,
+                        command.SessionId,
+                        session.Title,
+                        session.ScheduledAt,
+                        participants,
+                        command.ConfirmationMessage),
+                    disableActions),
+                ct);
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to update confirmation message for session {SessionId}", command.SessionId);
+        }
+    }
+
+    private static async Task<IEnumerable<PlatformUser>> GetGmRecipientsAsync(
+        NpgsqlConnection connection,
+        Guid groupId,
+        NpgsqlTransaction transaction)
+    {
+        var rows = await connection.QueryAsync<RsvpRecipientRow>(
+            """
+            SELECT DISTINCT
+                   p.platform AS Platform,
+                   p.external_user_id AS ExternalUserId,
+                   p.display_name AS DisplayName,
+                   p.external_username AS ExternalUsername
+            FROM group_managers gm
+            JOIN players p ON p.id = gm.player_id
+            WHERE gm.group_id = @GroupId
+            """,
+            new { GroupId = groupId },
+            transaction);
+
+        return rows.Select(row => new PlatformUser(
+            ParsePlatform(row.Platform),
+            row.ExternalUserId,
+            row.DisplayName,
+            row.ExternalUsername));
+    }
+
+    private static PlatformSessionParticipant ToParticipant(ParticipantRsvpRow row) =>
+        new(
+            new PlatformUser(
+                ParsePlatform(row.Platform),
+                row.ExternalUserId,
+                row.DisplayName,
+                row.ExternalUsername),
+            row.RsvpStatus,
+            row.RegistrationStatus,
+            row.IsGm);
+
+    private static PlatformKind ParsePlatform(string platform) =>
+        Enum.Parse<PlatformKind>(platform, ignoreCase: true);
+}

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

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

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

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

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

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

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

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

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

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

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

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

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

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