feat(web): dashboard session deletion and E2E coverage for issue #150

- Add DeleteSessionAsync to ISessionStore/SessionService (unpublish portfolio card,
  remove bot-created empty forum topic, update batch message).
- Add DeleteSessionForCurrentUserAsync to AuthorizedSessionService with audit log.
- Add delete button + confirmation dialog to GroupDetails.razor.
- Extend dashboard Playwright tests with edit persistence and delete verification.
- Update AuthorizedSessionServiceTests with delete authorization coverage.
- Mark issue #150 as done in tests/e2e/README.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/e2e/runner/DatabaseAssertions.cs

@@ -0,0 +1,361 @@
+using Npgsql;
+
+namespace GmRelay.E2E.Runner;
+
+public sealed record SessionDto(
+    Guid Id,
+    string Title,
+    string Status,
+    DateTimeOffset ScheduledAt,
+    int? MaxPlayers,
+    int? BatchMessageId,
+    int? ConfirmationMessageId,
+    int? LinkMessageId,
+    string? JoinLink,
+    Guid GroupId);
+
+public sealed record ParticipantDto(
+    Guid ParticipantId,
+    string DisplayName,
+    string ExternalUserId,
+    string RegistrationStatus,
+    string RsvpStatus,
+    bool IsGm);
+
+public sealed record RescheduleProposalDto(
+    Guid Id,
+    string Status,
+    DateTimeOffset? VotingDeadlineAt,
+    int? VoteMessageId,
+    Guid? SelectedOptionId);
+
+public sealed record RescheduleOptionDto(
+    Guid Id,
+    int DisplayOrder,
+    DateTimeOffset ProposedAt);
+
+/// <summary>
+/// PostgreSQL helper for the E2E runner. Allows assertions against the actual
+/// application state and small, controlled seeds (e.g. a fake second player)
+/// that would otherwise require multiple real Telegram test accounts.
+/// </summary>
+public sealed class DatabaseAssertions(RunnerConfig config)
+{
+    private NpgsqlConnection CreateConnection() => new(config.DatabaseUrl);
+
+
+    public async Task<SessionDto?> GetSessionByIdAsync(Guid sessionId)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            """
+            SELECT s.id AS Id,
+                   s.title AS Title,
+                   s.status AS Status,
+                   s.scheduled_at AS ScheduledAt,
+                   s.max_players AS MaxPlayers,
+                   s.batch_message_id AS BatchMessageId,
+                   s.confirmation_message_id AS ConfirmationMessageId,
+                   s.link_message_id AS LinkMessageId,
+                   s.join_link AS JoinLink,
+                   s.group_id AS GroupId
+            FROM sessions s
+            WHERE s.id = @SessionId
+            """,
+            connection);
+
+        command.Parameters.AddWithValue("@SessionId", sessionId);
+
+        await using var reader = await command.ExecuteReaderAsync();
+        if (!await reader.ReadAsync())
+            return null;
+
+        return MapSession(reader);
+    }
+
+    public async Task<SessionDto?> GetSessionByTitleAsync(long telegramChatId, string title)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            """
+            SELECT s.id AS Id,
+                   s.title AS Title,
+                   s.status AS Status,
+                   s.scheduled_at AS ScheduledAt,
+                   s.max_players AS MaxPlayers,
+                   s.batch_message_id AS BatchMessageId,
+                   s.confirmation_message_id AS ConfirmationMessageId,
+                   s.link_message_id AS LinkMessageId,
+                   s.join_link AS JoinLink,
+                   s.group_id AS GroupId
+            FROM sessions s
+            JOIN game_groups g ON g.id = s.group_id
+            WHERE g.external_group_id::BIGINT = @ExternalGroupId
+              AND s.title = @Title
+            ORDER BY s.created_at DESC
+            LIMIT 1
+            """,
+            connection);
+
+        command.Parameters.AddWithValue("@ExternalGroupId", telegramChatId);
+        command.Parameters.AddWithValue("@Title", title);
+
+        await using var reader = await command.ExecuteReaderAsync();
+        if (!await reader.ReadAsync())
+            return null;
+
+        return MapSession(reader);
+    }
+
+    public async Task<IReadOnlyList<ParticipantDto>> GetParticipantsAsync(Guid sessionId)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            """
+            SELECT sp.id AS ParticipantId,
+                   p.display_name AS DisplayName,
+                   p.external_user_id AS ExternalUserId,
+                   sp.registration_status AS RegistrationStatus,
+                   sp.rsvp_status AS RsvpStatus,
+                   sp.is_gm AS IsGm
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId
+            ORDER BY sp.created_at, sp.id
+            """,
+            connection);
+
+        command.Parameters.AddWithValue("@SessionId", sessionId);
+
+        var participants = new List<ParticipantDto>();
+        await using var reader = await command.ExecuteReaderAsync();
+        while (await reader.ReadAsync())
+        {
+            participants.Add(new ParticipantDto(
+                reader.GetGuid(0),
+                reader.GetString(1),
+                reader.GetString(2),
+                reader.GetString(3),
+                reader.GetString(4),
+                reader.GetBoolean(5)));
+        }
+
+        return participants;
+    }
+
+    public async Task<RescheduleProposalDto?> GetActiveRescheduleProposalAsync(Guid sessionId)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            """
+            SELECT id,
+                   status,
+                   voting_deadline_at,
+                   vote_message_id,
+                   selected_option_id
+            FROM reschedule_proposals
+            WHERE session_id = @SessionId
+              AND status IN ('AwaitingTime', 'Voting')
+            ORDER BY created_at DESC
+            LIMIT 1
+            """,
+            connection);
+
+        command.Parameters.AddWithValue("@SessionId", sessionId);
+
+        await using var reader = await command.ExecuteReaderAsync();
+        if (!await reader.ReadAsync())
+            return null;
+
+        return new RescheduleProposalDto(
+            reader.GetGuid(0),
+            reader.GetString(1),
+            reader.IsDBNull(2) ? null : new DateTimeOffset(reader.GetDateTime(2), TimeSpan.Zero),
+            reader.IsDBNull(3) ? null : reader.GetInt32(3),
+            reader.IsDBNull(4) ? null : reader.GetGuid(4));
+    }
+
+    public async Task<IReadOnlyList<RescheduleOptionDto>> GetRescheduleOptionsAsync(Guid proposalId)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            """
+            SELECT id, display_order, proposed_at
+            FROM reschedule_options
+            WHERE proposal_id = @ProposalId
+            ORDER BY display_order
+            """,
+            connection);
+
+        command.Parameters.AddWithValue("@ProposalId", proposalId);
+
+        var options = new List<RescheduleOptionDto>();
+        await using var reader = await command.ExecuteReaderAsync();
+        while (await reader.ReadAsync())
+        {
+            options.Add(new RescheduleOptionDto(
+                reader.GetGuid(0),
+                reader.GetInt32(1),
+                reader.GetDateTime(2)));
+        }
+
+        return options;
+    }
+
+    /// <summary>
+    /// Moves a session forward or backward in time from the database perspective.
+    /// Used as a time-mock so the scheduler background services fire quickly
+    /// during local E2E runs instead of waiting real 24 hours.
+    /// </summary>
+    public async Task TimeTravelAsync(Guid sessionId, DateTimeOffset newScheduledAt)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            """
+            UPDATE sessions
+            SET scheduled_at = @ScheduledAt,
+                updated_at = now()
+            WHERE id = @SessionId
+            """,
+            connection);
+
+        command.Parameters.AddWithValue("@ScheduledAt", newScheduledAt);
+        command.Parameters.AddWithValue("@SessionId", sessionId);
+
+        await command.ExecuteNonQueryAsync();
+    }
+
+    /// <summary>
+    /// Resets notification flags so a session can trigger the T-24h confirmation
+    /// and T-5m join-link reminders again after time-travel.
+    /// </summary>
+    public async Task ResetNotificationFlagsAsync(Guid sessionId)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            """
+            UPDATE sessions
+            SET confirmation_sent_at = NULL,
+                link_message_id = NULL,
+                one_hour_reminder_processed_at = NULL,
+                status = CASE WHEN status = 'ConfirmationSent' THEN 'Planned' ELSE status END,
+                updated_at = now()
+            WHERE id = @SessionId
+            """,
+            connection);
+
+        command.Parameters.AddWithValue("@SessionId", sessionId);
+
+        await command.ExecuteNonQueryAsync();
+    }
+
+    /// <summary>
+    /// Inserts a fake Telegram player and adds them to a session. This lets a
+    /// single real test account exercise waitlist/promotion flows that would
+    /// normally require a second Telegram user.
+    /// </summary>
+    public async Task<Guid> SeedFakeParticipantAsync(
+        Guid sessionId,
+        string displayName,
+        long externalUserId,
+        string registrationStatus,
+        string rsvpStatus = "Pending",
+        bool isGm = false)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+        await using var transaction = await connection.BeginTransactionAsync();
+
+        Guid playerId;
+
+        await using var playerCommand = new NpgsqlCommand(
+            """
+            INSERT INTO players (display_name, platform, external_user_id, external_username)
+            VALUES (@DisplayName, 'Telegram', @ExternalUserId, NULL)
+            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
+            RETURNING id
+            """,
+            connection,
+            transaction);
+
+        playerCommand.Parameters.AddWithValue("@DisplayName", displayName);
+        playerCommand.Parameters.AddWithValue("@ExternalUserId", externalUserId.ToString(System.Globalization.CultureInfo.InvariantCulture));
+
+        var result = await playerCommand.ExecuteScalarAsync();
+        playerId = (Guid)(result ?? throw new InvalidOperationException("Failed to seed fake player."));
+
+        await using var participantCommand = new NpgsqlCommand(
+            """
+            INSERT INTO session_participants (session_id, player_id, is_gm, rsvp_status, registration_status)
+            VALUES (@SessionId, @PlayerId, @IsGm, @RsvpStatus, @RegistrationStatus)
+            ON CONFLICT (session_id, player_id) DO UPDATE
+            SET rsvp_status = EXCLUDED.rsvp_status,
+                registration_status = EXCLUDED.registration_status,
+                is_gm = EXCLUDED.is_gm
+            RETURNING id
+            """,
+            connection,
+            transaction);
+
+        participantCommand.Parameters.AddWithValue("@SessionId", sessionId);
+        participantCommand.Parameters.AddWithValue("@PlayerId", playerId);
+        participantCommand.Parameters.AddWithValue("@IsGm", isGm);
+        participantCommand.Parameters.AddWithValue("@RsvpStatus", rsvpStatus);
+        participantCommand.Parameters.AddWithValue("@RegistrationStatus", registrationStatus);
+
+        await participantCommand.ExecuteNonQueryAsync();
+        await transaction.CommitAsync();
+
+        return playerId;
+    }
+
+    public async Task UpdateSessionMaxPlayersAsync(Guid sessionId, int? maxPlayers)
+    {
+        await using var connection = CreateConnection();
+        await connection.OpenAsync();
+
+        await using var command = new NpgsqlCommand(
+            "UPDATE sessions SET max_players = @MaxPlayers, updated_at = now() WHERE id = @SessionId",
+            connection);
+
+        if (maxPlayers.HasValue)
+            command.Parameters.AddWithValue("@MaxPlayers", maxPlayers.Value);
+        else
+            command.Parameters.AddWithValue("@MaxPlayers", DBNull.Value);
+
+        command.Parameters.AddWithValue("@SessionId", sessionId);
+
+        await command.ExecuteNonQueryAsync();
+    }
+
+    private static SessionDto MapSession(NpgsqlDataReader reader) =>
+        new(
+            reader.GetGuid(0),
+            reader.GetString(1),
+            reader.GetString(2),
+            reader.GetDateTime(3),
+            reader.IsDBNull(4) ? null : reader.GetInt32(4),
+            reader.IsDBNull(5) ? null : reader.GetInt32(5),
+            reader.IsDBNull(6) ? null : reader.GetInt32(6),
+            reader.IsDBNull(7) ? null : reader.GetInt32(7),
+            reader.IsDBNull(8) ? null : reader.GetString(8),
+            reader.GetGuid(9));
+}

tests/e2e/runner/GmRelay.E2E.Runner.csproj

@@ -11,6 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Npgsql" Version="10.0.2" />
     <PackageReference Include="WTelegramClient" Version="4.3.5" />
     <PackageReference Include="dotenv.net" Version="3.2.1" />
   </ItemGroup>

tests/e2e/runner/JoinLeaveWaitlistRescheduleScenario.cs

@@ -0,0 +1,370 @@
+using System.Globalization;
+using TL;
+
+namespace GmRelay.E2E.Runner;
+
+/// <summary>
+/// E2E scenario covering the product lifecycle of a session after it has been
+/// published: join, waitlist, promotion, leave + auto-promotion, reschedule
+/// voting, T-24h RSVP confirmation and T-5m join-link notifications.
+///
+/// A single real Telegram test account is enough because waitlist scenarios
+/// that need a second player are satisfied by seeding a fake participant
+/// directly into PostgreSQL. Notification deadlines are accelerated by updating
+/// <c>sessions.scheduled_at</c> from the runner (a database-level time-mock).
+/// </summary>
+public sealed class JoinLeaveWaitlistRescheduleScenario
+{
+    private readonly TelegramUserClient _client;
+    private readonly RunnerConfig _config;
+    private readonly DatabaseAssertions _db;
+
+    public JoinLeaveWaitlistRescheduleScenario(TelegramUserClient client, RunnerConfig config)
+    {
+        _client = client;
+        _config = config;
+        _db = new DatabaseAssertions(config);
+    }
+
+    public async Task RunAsync(ChatGroup group, CancellationToken cancellationToken = default)
+    {
+        var baseSession = await CreateSessionAsync(group, maxPlayers: 2, cancellationToken);
+        Console.WriteLine($"[scenario] base session {baseSession.Id} created");
+
+        await JoinActiveAsync(group, baseSession, cancellationToken);
+        await RescheduleAndNotifyAsync(group, baseSession, cancellationToken);
+        await ManualPromoteAsync(group, baseSession, cancellationToken);
+        await AutoPromoteLeaveAsync(group, baseSession, cancellationToken);
+
+        var waitlistSession = await CreateSessionAsync(group, maxPlayers: 1, cancellationToken);
+        Console.WriteLine($"[scenario] waitlist session {waitlistSession.Id} created");
+        await JoinWaitlistAsync(group, waitlistSession, cancellationToken);
+
+        Console.WriteLine("[scenario] join/leave/waitlist/reschedule/notification flow completed");
+    }
+
+    private async Task<SessionDto> CreateSessionAsync(
+        ChatGroup group,
+        int? maxPlayers,
+        CancellationToken ct)
+    {
+        var title = $"E2E JLW {DateTime.UtcNow:yyyyMMdd-HHmmss}-{Guid.NewGuid().ToString()[..4]}";
+        var scheduledAtMoscow = DateTime.UtcNow
+            .AddDays(7)
+            .AddHours(3)
+            .ToString("dd.MM.yyyy HH:mm", CultureInfo.InvariantCulture);
+
+        var inputs = new NewSessionInputs(
+            Title: title,
+            ScheduledAtMoscow: scheduledAtMoscow,
+            MaxPlayers: maxPlayers ?? 5,
+            JoinLink: "https://example.com/join-e2e");
+
+        var wizard = new NewSessionScenario(_client, _config);
+        await wizard.RunAsync(group, inputs, ct);
+
+        var session = await _db.GetSessionByTitleAsync(group.Id, title);
+        return session ?? throw new InvalidOperationException($"Session '{title}' was not found in the database.");
+    }
+
+    private async Task JoinActiveAsync(ChatGroup group, SessionDto session, CancellationToken ct)
+    {
+        Console.WriteLine("[scenario] joining base session as active player");
+        await _client.ClickInlineButtonAsync(
+            group,
+            $"join_session:{session.Id}",
+            session.BatchMessageId,
+            ct);
+
+        await Task.Delay(TimeSpan.FromSeconds(2), ct);
+
+        var me = await GetCurrentParticipantAsync(session.Id, ct);
+        if (me?.RegistrationStatus != "Active")
+            throw new InvalidOperationException("Expected current user to be an active participant after join.");
+
+        Console.WriteLine("[scenario] joined as active player");
+    }
+
+    private async Task RescheduleAndNotifyAsync(ChatGroup group, SessionDto session, CancellationToken ct)
+    {
+        Console.WriteLine("[scenario] initiating reschedule");
+
+        await _client.ClickInlineButtonAsync(
+            group,
+            $"reschedule_session:{session.Id}",
+            session.BatchMessageId,
+            ct);
+
+        var prompt = await _client.WaitForBotReplyAsync(
+            group,
+            containsText: "Укажите 2-3 варианта времени",
+            timeout: TimeSpan.FromSeconds(30),
+            cancellationToken: ct)
+            ?? throw new InvalidOperationException("Reschedule prompt was not received.");
+
+        var nowMoscow = DateTimeOffset.UtcNow.ToOffset(TimeSpan.FromHours(3));
+        var option1 = nowMoscow.AddMinutes(10);
+        var option2 = nowMoscow.AddMinutes(20);
+        var deadline = nowMoscow.AddMinutes(5);
+
+        var rescheduleText = string.Join(
+            "\n",
+            option1.ToString("dd.MM.yyyy HH:mm", CultureInfo.InvariantCulture),
+            option2.ToString("dd.MM.yyyy HH:mm", CultureInfo.InvariantCulture),
+            $"Дедлайн: {deadline.ToString("dd.MM.yyyy HH:mm", CultureInfo.InvariantCulture)}");
+
+        await _client.SendMessageAsync(group, rescheduleText, ct);
+
+        var voteMessage = await _client.WaitForBotReplyAsync(
+            group,
+            containsText: "Голосование за перенос",
+            timeout: TimeSpan.FromSeconds(30),
+            cancellationToken: ct)
+            ?? throw new InvalidOperationException("Reschedule voting message was not received.");
+
+        var proposal = await WaitForActiveRescheduleProposalAsync(session.Id, ct);
+        var options = await _db.GetRescheduleOptionsAsync(proposal.Id);
+        var firstOption = options.FirstOrDefault()
+            ?? throw new InvalidOperationException("No reschedule options found in the database.");
+
+        await _client.ClickInlineButtonAsync(
+            group,
+            $"reschedule_vote:{firstOption.Id}",
+            voteMessage.id,
+            ct);
+
+        Console.WriteLine($"[scenario] voted for option {firstOption.Id}; waiting for deadline service");
+
+        var finalDeadline = DateTime.UtcNow.AddMinutes(8);
+        while (DateTime.UtcNow < finalDeadline)
+        {
+            ct.ThrowIfCancellationRequested();
+            var updated = await _db.GetSessionByTitleAsync(group.Id, session.Title);
+            if (updated?.ScheduledAt >= option1.AddMinutes(-1) && updated?.ScheduledAt <= option1.AddMinutes(1))
+            {
+                Console.WriteLine("[scenario] reschedule applied");
+                break;
+            }
+
+            await Task.Delay(TimeSpan.FromSeconds(5), ct);
+        }
+
+        var afterReschedule = await _db.GetSessionByTitleAsync(group.Id, session.Title)
+            ?? throw new InvalidOperationException("Session disappeared after reschedule.");
+
+        if (afterReschedule.Status != "Planned")
+            throw new InvalidOperationException($"Expected session status 'Planned' after reschedule, got '{afterReschedule.Status}'.");
+
+        Console.WriteLine("[scenario] waiting for T-24h confirmation request");
+        var confirmationMessageId = await WaitForNullableIntAsync(
+            async () => (await _db.GetSessionByTitleAsync(group.Id, session.Title))?.ConfirmationMessageId,
+            timeout: TimeSpan.FromMinutes(2),
+            ct);
+
+        await _client.ClickInlineButtonAsync(
+            group,
+            $"rsvp:confirm:{session.Id}",
+            confirmationMessageId,
+            ct);
+
+        await WaitForSessionStatusAsync(session.Id, "Confirmed", TimeSpan.FromMinutes(1), ct);
+        Console.WriteLine("[scenario] RSVP confirmed");
+
+        Console.WriteLine("[scenario] waiting for T-5m join link");
+        await WaitForBotMessageAsync(
+            group,
+            containsText: "начинается через 5 минут",
+            timeout: TimeSpan.FromMinutes(2),
+            ct);
+
+        var afterJoinLink = await _db.GetSessionByTitleAsync(group.Id, session.Title)
+            ?? throw new InvalidOperationException("Session disappeared after join link.");
+        if (!afterJoinLink.LinkMessageId.HasValue)
+            throw new InvalidOperationException("Expected link_message_id to be populated after T-5m notification.");
+
+        Console.WriteLine("[scenario] T-24h confirmation and T-5m join link verified");
+    }
+
+    private async Task ManualPromoteAsync(ChatGroup group, SessionDto session, CancellationToken ct)
+    {
+        Console.WriteLine("[scenario] manual waitlist promotion");
+
+        await _db.SeedFakeParticipantAsync(
+            session.Id,
+            "E2E Fake Waitlisted",
+            externalUserId: 9000000001,
+            registrationStatus: "Waitlisted",
+            rsvpStatus: "Pending",
+            isGm: false);
+
+        await _db.UpdateSessionMaxPlayersAsync(session.Id, 2);
+
+        await _client.SendCommandAsync(group, "listsessions", ct);
+
+        var listMessage = await _client.WaitForBotReplyAsync(
+            group,
+            containsText: "Ближайшие игры",
+            timeout: TimeSpan.FromSeconds(30),
+            cancellationToken: ct)
+            ?? throw new InvalidOperationException("/listsessions reply was not received.");
+
+        await _client.ClickInlineButtonAsync(
+            group,
+            $"promote_waitlist:{session.Id}",
+            listMessage.id,
+            ct);
+
+        await Task.Delay(TimeSpan.FromSeconds(2), ct);
+
+        var fake = await FindParticipantAsync(session.Id, "9000000001", ct);
+        if (fake?.RegistrationStatus != "Active")
+            throw new InvalidOperationException("Expected fake waitlisted participant to be promoted to active.");
+
+        Console.WriteLine("[scenario] manual promotion verified");
+    }
+
+    private async Task AutoPromoteLeaveAsync(ChatGroup group, SessionDto session, CancellationToken ct)
+    {
+        Console.WriteLine("[scenario] leave + automatic waitlist promotion");
+
+        await _db.SeedFakeParticipantAsync(
+            session.Id,
+            "E2E Fake Promotion",
+            externalUserId: 9000000002,
+            registrationStatus: "Waitlisted",
+            rsvpStatus: "Pending",
+            isGm: false);
+
+        await _client.ClickInlineButtonAsync(
+            group,
+            $"leave_session:{session.Id}",
+            session.BatchMessageId,
+            ct);
+
+        await Task.Delay(TimeSpan.FromSeconds(2), ct);
+
+        var me = await GetCurrentParticipantAsync(session.Id, ct);
+        if (me is not null)
+            throw new InvalidOperationException("Expected current user to be removed from session after leave.");
+
+        var fake = await FindParticipantAsync(session.Id, "9000000002", ct);
+        if (fake?.RegistrationStatus != "Active")
+            throw new InvalidOperationException("Expected fake waitlisted participant to be auto-promoted after leave.");
+
+        Console.WriteLine("[scenario] auto-promotion after leave verified");
+    }
+
+    private async Task JoinWaitlistAsync(ChatGroup group, SessionDto session, CancellationToken ct)
+    {
+        Console.WriteLine("[scenario] join to waitlist when capacity is full");
+
+        await _db.SeedFakeParticipantAsync(
+            session.Id,
+            "E2E Fake Active",
+            externalUserId: 9000000003,
+            registrationStatus: "Active",
+            rsvpStatus: "Pending",
+            isGm: false);
+
+        await _db.UpdateSessionMaxPlayersAsync(session.Id, 1);
+
+        await _client.ClickInlineButtonAsync(
+            group,
+            $"join_session:{session.Id}",
+            session.BatchMessageId,
+            ct);
+
+        await Task.Delay(TimeSpan.FromSeconds(2), ct);
+
+        var me = await GetCurrentParticipantAsync(session.Id, ct);
+        if (me?.RegistrationStatus != "Waitlisted")
+            throw new InvalidOperationException("Expected current user to be waitlisted when capacity is full.");
+
+        Console.WriteLine("[scenario] waitlist join verified");
+    }
+
+    private async Task<ParticipantDto?> GetCurrentParticipantAsync(Guid sessionId, CancellationToken ct)
+    {
+        var participants = await _db.GetParticipantsAsync(sessionId);
+        return participants.FirstOrDefault(p =>
+            p.ExternalUserId == _client.CurrentUserId.ToString(CultureInfo.InvariantCulture));
+    }
+
+    private async Task<ParticipantDto?> FindParticipantAsync(Guid sessionId, string externalUserId, CancellationToken ct)
+    {
+        var participants = await _db.GetParticipantsAsync(sessionId);
+        return participants.FirstOrDefault(p => p.ExternalUserId == externalUserId);
+    }
+
+    private async Task<RescheduleProposalDto> WaitForActiveRescheduleProposalAsync(Guid sessionId, CancellationToken ct)
+    {
+        var deadline = DateTime.UtcNow + TimeSpan.FromSeconds(30);
+        while (DateTime.UtcNow < deadline)
+        {
+            ct.ThrowIfCancellationRequested();
+            var proposal = await _db.GetActiveRescheduleProposalAsync(sessionId);
+            if (proposal is not null)
+                return proposal;
+
+            await Task.Delay(TimeSpan.FromSeconds(1), ct);
+        }
+
+        throw new TimeoutException("Reschedule proposal was not created in the database.");
+    }
+
+    private async Task WaitForSessionStatusAsync(
+        Guid sessionId,
+        string expectedStatus,
+        TimeSpan timeout,
+        CancellationToken ct)
+    {
+        var deadline = DateTime.UtcNow + timeout;
+
+        while (DateTime.UtcNow < deadline)
+        {
+            ct.ThrowIfCancellationRequested();
+            var session = await _db.GetSessionByIdAsync(sessionId);
+            if (session?.Status == expectedStatus)
+                return;
+
+            await Task.Delay(TimeSpan.FromSeconds(2), ct);
+        }
+
+        throw new TimeoutException($"Session did not reach status '{expectedStatus}' in time.");
+    }
+
+    private async Task WaitForBotMessageAsync(
+        ChatGroup group,
+        string containsText,
+        TimeSpan timeout,
+        CancellationToken ct)
+    {
+        var message = await _client.WaitForBotReplyAsync(
+            group,
+            containsText: containsText,
+            timeout: timeout,
+            cancellationToken: ct);
+
+        if (message is null)
+            throw new TimeoutException($"Bot message containing '{containsText}' was not received.");
+    }
+
+    private async Task<int> WaitForNullableIntAsync(
+        Func<Task<int?>> poll,
+        TimeSpan timeout,
+        CancellationToken ct)
+    {
+        var deadline = DateTime.UtcNow + timeout;
+        while (DateTime.UtcNow < deadline)
+        {
+            ct.ThrowIfCancellationRequested();
+            var value = await poll();
+            if (value.HasValue)
+                return value.Value;
+
+            await Task.Delay(TimeSpan.FromSeconds(2), ct);
+        }
+
+        throw new TimeoutException("Expected nullable int value was not populated in time.");
+    }
+}

tests/e2e/runner/Program.cs

@@ -10,6 +10,7 @@ var config = new RunnerConfig
     PhoneNumber = Environment.GetEnvironmentVariable("phone_number")!,
     BotUsername = Environment.GetEnvironmentVariable("TELEGRAM_BOT_USERNAME")!,
     BotToken = Environment.GetEnvironmentVariable("TELEGRAM_BOT_TOKEN")!,
+    DatabaseUrl = Environment.GetEnvironmentVariable("GMRELAY_E2E_DATABASE_URL")!,
 };
 
 using var client = new TelegramUserClient(config);
@@ -30,7 +31,11 @@ try
         JoinLink: "https://example.com/join-e2e");
 
     await newSession.RunAsync(result.Group, inputs);
-    Console.WriteLine("Full scenario completed successfully.");
+    Console.WriteLine("Wizard scenario completed successfully.");
+
+    var lifecycle = new JoinLeaveWaitlistRescheduleScenario(client, config);
+    await lifecycle.RunAsync(result.Group);
+    Console.WriteLine("Lifecycle scenario completed successfully.");
 }
 catch (Exception ex)
 {

tests/e2e/runner/RunnerConfig.cs

@@ -7,4 +7,5 @@ public sealed class RunnerConfig
     public required string PhoneNumber { get; init; }
     public required string BotUsername { get; init; }
     public required string BotToken { get; init; }
+    public required string DatabaseUrl { get; init; }
 }

tests/e2e/runner/TelegramUserClient.cs

@@ -17,6 +17,8 @@ public sealed class TelegramUserClient : IDisposable
         _client = new Client(_ => Environment.GetEnvironmentVariable(_));
     }
 
+    public long CurrentUserId => _client.UserId;
+
     public async Task ConnectAsync(CancellationToken cancellationToken = default)
     {
         var me = await _client.LoginUserIfNeeded();