refactor: unify session status model

Fixes #5

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 1.1.0
+  VERSION: 1.1.4
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>1.1.0</Version>
+    <Version>1.1.4</Version>
     <TargetFramework>net10.0</TargetFramework>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>

compose.yaml

@@ -18,7 +18,7 @@ services:
       retries: 10
 
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:1.1.0
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:1.1.4
     container_name: gmrelay_bot
     restart: always
     network_mode: host
@@ -30,7 +30,7 @@ services:
       - "Telegram__BotToken=${TELEGRAM_BOT_TOKEN}"
 
   web:
-    image: git.codeanddice.ru/toutsu/gmrelay-web:1.1.0
+    image: git.codeanddice.ru/toutsu/gmrelay-web:1.1.4
     container_name: gmrelay_web
     restart: always
     network_mode: host

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

@@ -1,14 +1,11 @@
 using Dapper;
 using GmRelay.Shared.Domain;
-using GmRelay.Bot.Features.Confirmation.SendConfirmation;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Features.Confirmation.HandleRsvp;
 
-// ── Command ──────────────────────────────────────────────────────────
-
 public sealed record HandleRsvpCommand(
     Guid SessionId,
     long TelegramUserId,
@@ -17,13 +14,12 @@ public sealed record HandleRsvpCommand(
     long ChatId,
     int MessageId);
 
-// ── DTOs ─────────────────────────────────────────────────────────────
-
 internal sealed record RsvpCounts(int Total, int Confirmed, int Declined);
 
 internal sealed record SessionContext(
     string Title,
     DateTime ScheduledAt,
+    string Status,
     long GmTelegramId,
     long TelegramChatId);
 
@@ -33,21 +29,6 @@ internal sealed record ParticipantRsvp(
     string? TelegramUsername,
     string RsvpStatus);
 
-// ── Handler ──────────────────────────────────────────────────────────
-
-/// <summary>
-/// Handles the "Буду" / "Не смогу" callback query.
-///
-/// Flow:
-///   1. Validate that the user is a participant in this session
-///   2. Record or update their RSVP (idempotent)
-///   3. If declined → alert GM privately, revert session if was Confirmed
-///   4. If all non-GM players confirmed → mark session Confirmed, notify group + GM
-///   5. Update the inline keyboard to show current RSVP status
-///
-/// Concurrency: two simultaneous clicks on different rows don't conflict (MVCC).
-/// The last EditMessage wins, which is fine — both reflect up-to-date state.
-/// </summary>
 public sealed class HandleRsvpHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
@@ -58,12 +39,11 @@ public sealed class HandleRsvpHandler(
         await using var connection = await dataSource.OpenConnectionAsync(ct);
         await using var transaction = await connection.BeginTransactionAsync(ct);
 
-        // ── 1. Validate participant ──────────────────────────────────
-
         var participantExists = await connection.ExecuteScalarAsync<bool>(
             """
             SELECT EXISTS (
-                SELECT 1 FROM session_participants sp
+                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
@@ -82,8 +62,6 @@ public sealed class HandleRsvpHandler(
             return;
         }
 
-        // ── 2. Record RSVP (idempotent) ─────────────────────────────
-
         var updated = await connection.ExecuteAsync(
             """
             UPDATE session_participants
@@ -98,7 +76,6 @@ public sealed class HandleRsvpHandler(
 
         if (updated == 0)
         {
-            // Already in this state — just dismiss the loading spinner
             var alreadyText = command.Status == RsvpStatus.Confirmed
                 ? "Вы уже подтвердили участие."
                 : "Вы уже отказались от участия.";
@@ -110,11 +87,11 @@ public sealed class HandleRsvpHandler(
             return;
         }
 
-        // ── 3. Load session context ─────────────────────────────────
-
         var session = await connection.QuerySingleAsync<SessionContext>(
             """
-            SELECT s.title, s.scheduled_at AS ScheduledAt,
+            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
@@ -124,26 +101,27 @@ public sealed class HandleRsvpHandler(
             new { command.SessionId },
             transaction);
 
-        // ── 4. Handle decline ───────────────────────────────────────
-
         if (command.Status == RsvpStatus.Declined)
         {
-            // Revert session to ConfirmationSent if it was Confirmed
+            var decision = RsvpFlowRules.Evaluate(command.Status, session.Status, totalParticipants: 0, confirmedParticipants: 0);
-            await connection.ExecuteAsync(
+
-                """
+            if (decision.ShouldRevertSessionToConfirmationSent)
-                UPDATE sessions
+            {
-                SET    status = @ConfirmationSent, updated_at = now()
+                await connection.ExecuteAsync(
-                WHERE  id = @SessionId AND status = @Confirmed
+                    """
-                """,
+                    UPDATE sessions
-                new
+                    SET    status = @ConfirmationSent, updated_at = now()
-                {
+                    WHERE  id = @SessionId AND status = @Confirmed
-                    command.SessionId,
+                    """,
-                    ConfirmationSent = SessionStatus.ConfirmationSent,
+                    new
-                    Confirmed = SessionStatus.Confirmed
+                    {
-                },
+                        command.SessionId,
-                transaction);
+                        ConfirmationSent = SessionStatus.ConfirmationSent,
+                        Confirmed = SessionStatus.Confirmed
+                    },
+                    transaction);
+            }
 
-            // Alert GM immediately via private message
             var declinedPlayer = await connection.QuerySingleAsync<string>(
                 "SELECT display_name FROM players WHERE telegram_id = @TelegramUserId",
                 new { command.TelegramUserId },
@@ -151,7 +129,6 @@ public sealed class HandleRsvpHandler(
 
             await transaction.CommitAsync(ct);
 
-            // Send alert outside transaction (network call)
             try
             {
                 await bot.SendMessage(
@@ -161,24 +138,22 @@ public sealed class HandleRsvpHandler(
             }
             catch (Exception ex)
             {
-                logger.LogWarning(ex, "Failed to send decline alert to GM for session {SessionId}",
+                logger.LogWarning(ex, "Failed to send decline alert to GM for session {SessionId}", command.SessionId);
-                    command.SessionId);
             }
 
             await bot.AnswerCallbackQuery(
                 callbackQueryId: command.CallbackQueryId,
-                text: "Вы отказались от участия.",
+                text: decision.CallbackText,
                 cancellationToken: ct);
         }
-        // ── 5. Handle confirm — check if ALL confirmed ──────────────
         else
         {
             var counts = await connection.QuerySingleAsync<RsvpCounts>(
                 """
                 SELECT
-                    count(*)                                              AS Total,
+                    count(*)                                         AS Total,
-                    count(*) FILTER (WHERE rsvp_status = @Confirmed)      AS Confirmed,
+                    count(*) FILTER (WHERE rsvp_status = @Confirmed) AS Confirmed,
-                    count(*) FILTER (WHERE rsvp_status = @Declined)       AS Declined
+                    count(*) FILTER (WHERE rsvp_status = @Declined)  AS Declined
                 FROM session_participants
                 WHERE session_id = @SessionId AND is_gm = false
                 """,
@@ -190,9 +165,9 @@ public sealed class HandleRsvpHandler(
                 },
                 transaction);
 
-            var allConfirmed = counts.Confirmed == counts.Total;
+            var decision = RsvpFlowRules.Evaluate(command.Status, session.Status, counts.Total, counts.Confirmed);
 
-            if (allConfirmed)
+            if (decision.ShouldMarkSessionConfirmed)
             {
                 await connection.ExecuteAsync(
                     """
@@ -206,9 +181,8 @@ public sealed class HandleRsvpHandler(
 
             await transaction.CommitAsync(ct);
 
-            if (allConfirmed)
+            if (decision.ShouldNotifyGroup)
             {
-                // Notify group
                 try
                 {
                     await bot.SendMessage(
@@ -218,11 +192,12 @@ public sealed class HandleRsvpHandler(
                 }
                 catch (Exception ex)
                 {
-                    logger.LogWarning(ex, "Failed to send group confirmation for session {SessionId}",
+                    logger.LogWarning(ex, "Failed to send group confirmation for session {SessionId}", command.SessionId);
-                        command.SessionId);
                 }
+            }
 
-                // Notify GM privately
+            if (decision.ShouldNotifyGm)
+            {
                 try
                 {
                     await bot.SendMessage(
@@ -232,27 +207,20 @@ public sealed class HandleRsvpHandler(
                 }
                 catch (Exception ex)
                 {
-                    logger.LogWarning(ex, "Failed to send GM confirmation for session {SessionId}",
+                    logger.LogWarning(ex, "Failed to send GM confirmation for session {SessionId}", command.SessionId);
-                        command.SessionId);
                 }
             }
 
             await bot.AnswerCallbackQuery(
                 callbackQueryId: command.CallbackQueryId,
-                text: "Вы подтвердили участие!",
+                text: decision.CallbackText,
                 cancellationToken: ct);
         }
 
-        // ── 6. Update inline keyboard message ───────────────────────
-
         await UpdateConfirmationMessage(command, session, ct);
     }
 
-    /// <summary>
+    private async Task UpdateConfirmationMessage(HandleRsvpCommand command, SessionContext session, CancellationToken ct)
-    /// Re-renders the confirmation message with current RSVP statuses.
-    /// </summary>
-    private async Task UpdateConfirmationMessage(
-        HandleRsvpCommand command, SessionContext session, CancellationToken ct)
     {
         try
         {
@@ -260,10 +228,10 @@ public sealed class HandleRsvpHandler(
 
             var participants = (await connection.QueryAsync<ParticipantRsvp>(
                 """
-                SELECT p.telegram_id    AS TelegramId,
+                SELECT p.telegram_id AS TelegramId,
-                       p.display_name    AS DisplayName,
+                       p.display_name AS DisplayName,
                        p.telegram_username AS TelegramUsername,
-                       sp.rsvp_status    AS RsvpStatus
+                       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
@@ -279,34 +247,47 @@ public sealed class HandleRsvpHandler(
             {
                 $"🎲 Подтвердите участие в «{session.Title}»",
                 $"📅 {session.ScheduledAt.FormatMoscow()} (МСК)",
-                ""
+                string.Empty
             };
 
-            foreach (var p in confirmed)
+            foreach (var participant in confirmed)
-                lines.Add($"   ✅ {FormatName(p)}");
+            {
-            foreach (var p in declined)
+                lines.Add($"   ✅ {FormatName(participant)}");
-                lines.Add($"   ❌ ~~{FormatName(p)}~~");
+            }
-            foreach (var p in pending)
-                lines.Add($"   ⏳ {FormatName(p)}");
 
-            lines.Add("");
+            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);
 
-            // Keep buttons unless everyone confirmed
             var replyMarkup = confirmed.Count == participants.Count
                 ? null
                 : new InlineKeyboardMarkup([
                     [
-                        InlineKeyboardButton.WithCallbackData("\u2705 Буду", $"rsvp:confirm:{command.SessionId}"),
+                        InlineKeyboardButton.WithCallbackData("✅ Буду", $"rsvp:confirm:{command.SessionId}"),
-                        InlineKeyboardButton.WithCallbackData("\u274c Не смогу", $"rsvp:decline:{command.SessionId}")
+                        InlineKeyboardButton.WithCallbackData("❌ Не смогу", $"rsvp:decline:{command.SessionId}")
                     ]
                 ]);
 
@@ -319,12 +300,10 @@ public sealed class HandleRsvpHandler(
         }
         catch (Exception ex)
         {
-            // EditMessage can fail if message is too old or unchanged — non-critical
+            logger.LogWarning(ex, "Failed to update confirmation message for session {SessionId}", command.SessionId);
-            logger.LogWarning(ex, "Failed to update confirmation message for session {SessionId}",
-                command.SessionId);
         }
     }
 
-    private static string FormatName(ParticipantRsvp p) =>
+    private static string FormatName(ParticipantRsvp participant) =>
-        p.TelegramUsername is not null ? $"@{p.TelegramUsername}" : p.DisplayName;
+        participant.TelegramUsername is not null ? $"@{participant.TelegramUsername}" : participant.DisplayName;
 }

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

@@ -0,0 +1,42 @@
+using GmRelay.Shared.Domain;
+
+namespace GmRelay.Bot.Features.Confirmation.HandleRsvp;
+
+internal sealed record RsvpFlowDecision(
+    string CallbackText,
+    bool ShouldAlertGm,
+    bool ShouldRevertSessionToConfirmationSent,
+    bool ShouldMarkSessionConfirmed,
+    bool ShouldNotifyGroup,
+    bool ShouldNotifyGm);
+
+internal static class RsvpFlowRules
+{
+    public static RsvpFlowDecision Evaluate(
+        string requestedStatus,
+        string currentSessionStatus,
+        int totalParticipants,
+        int confirmedParticipants)
+    {
+        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.",
+                ShouldAlertGm: true,
+                ShouldRevertSessionToConfirmationSent: currentSessionStatus == SessionStatus.Confirmed,
+                ShouldMarkSessionConfirmed: false,
+                ShouldNotifyGroup: false,
+                ShouldNotifyGm: false);
+        }
+
+        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!",
+            ShouldAlertGm: false,
+            ShouldRevertSessionToConfirmationSent: false,
+            ShouldMarkSessionConfirmed: everyoneConfirmed,
+            ShouldNotifyGroup: everyoneConfirmed,
+            ShouldNotifyGm: everyoneConfirmed);
+    }
+}

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

@@ -48,7 +48,10 @@ public sealed class CancelSessionHandler(
         }
 
         // 2. Отменяем сессию
-        await connection.ExecuteAsync("UPDATE sessions SET status = 'Cancelled' WHERE id = @Id", new { Id = command.SessionId }, transaction);
+        await connection.ExecuteAsync(
+            "UPDATE sessions SET status = @Status WHERE id = @Id",
+            new { Id = command.SessionId, Status = SessionStatus.Cancelled },
+            transaction);
 
         // 3. Загружаем весь батч для перерисовки
         var batchSessions = await connection.QueryAsync<SessionBatchDto>(

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

@@ -1,11 +1,9 @@
-using System.Text.RegularExpressions;
 using Dapper;
 using GmRelay.Shared.Domain;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types;
-using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Features.Sessions.CreateSession;
 
@@ -16,37 +14,25 @@ public sealed class CreateSessionHandler(
 {
     public async Task HandleAsync(Message message, CancellationToken cancellationToken)
     {
-        var text = message.Text ?? "";
+        var parseResult = NewSessionCommandParser.Parse(message.Text, DateTimeOffset.UtcNow);
 
-        string? title = null;
+        foreach (var timeInput in parseResult.PastTimeInputs)
-        string? link = null;
-        var scheduledTimes = new List<DateTimeOffset>();
-
-        foreach (var line in text.Split('\n'))
         {
-            var trimmed = line.Trim();
+            await botClient.SendMessage(
-            if (trimmed.StartsWith("Название:", StringComparison.OrdinalIgnoreCase))
+                message.Chat.Id,
-                title = trimmed["Название:".Length..].Trim();
+                $"⚠️ Предупреждение: дата {timeInput} находится в прошлом и будет пропущена.",
-            else if (trimmed.StartsWith("Ссылка:", StringComparison.OrdinalIgnoreCase))
+                cancellationToken: cancellationToken);
-                link = trimmed["Ссылка:".Length..].Trim();
-            else if (trimmed.StartsWith("Время:", StringComparison.OrdinalIgnoreCase))
-            {
-                var timeStr = trimmed["Время:".Length..].Trim();
-                if (MoscowTime.TryParseMoscow(timeStr, out var scheduledAt))
-                {
-                    if (scheduledAt > DateTimeOffset.UtcNow)
-                        scheduledTimes.Add(scheduledAt);
-                    else
-                        await botClient.SendMessage(message.Chat.Id, $"⚠️ Предупреждение: Дата {timeStr} находится в прошлом и будет пропущена.", cancellationToken: cancellationToken);
-                }
-                else
-                {
-                    await botClient.SendMessage(message.Chat.Id, $"⚠️ Предупреждение: Некорректный формат времени '{timeStr}'. Пропущено.", cancellationToken: cancellationToken);
-                }
-            }
         }
 
-        if (string.IsNullOrEmpty(title) || string.IsNullOrEmpty(link) || scheduledTimes.Count == 0)
+        foreach (var timeInput in parseResult.InvalidTimeInputs)
+        {
+            await botClient.SendMessage(
+                message.Chat.Id,
+                $"⚠️ Предупреждение: некорректный формат времени '{timeInput}'. Пропущено.",
+                cancellationToken: cancellationToken);
+        }
+
+        if (!parseResult.IsValid)
         {
             await botClient.SendMessage(
                 chatId: message.Chat.Id,
@@ -55,8 +41,10 @@ public sealed class CreateSessionHandler(
             return;
         }
 
+        var title = parseResult.Title!;
+        var link = parseResult.Link!;
         var gmId = message.From!.Id;
-        var gmName = message.From.FirstName + (string.IsNullOrEmpty(message.From.LastName) ? "" : $" {message.From.LastName}");
+        var gmName = message.From.FirstName + (string.IsNullOrEmpty(message.From.LastName) ? string.Empty : $" {message.From.LastName}");
         var gmUsername = message.From.Username;
 
         var chatId = message.Chat.Id;
@@ -67,20 +55,24 @@ public sealed class CreateSessionHandler(
 
         try
         {
-            // 1. Убеждаемся, что GM зарегистрирован
             await connection.ExecuteAsync(
-                @"INSERT INTO players (telegram_id, display_name, telegram_username) 
+                """
-                  VALUES (@TgId, @Name, @Username)
+                INSERT INTO players (telegram_id, display_name, telegram_username)
-                  ON CONFLICT (telegram_id) DO UPDATE SET display_name = EXCLUDED.display_name, telegram_username = EXCLUDED.telegram_username;",
+                VALUES (@TgId, @Name, @Username)
+                ON CONFLICT (telegram_id) DO UPDATE
+                SET display_name = EXCLUDED.display_name,
+                    telegram_username = EXCLUDED.telegram_username;
+                """,
                 new { TgId = gmId, Name = gmName, Username = gmUsername },
                 transaction);
 
-            // 2. Убеждаемся, что Группа зарегистрирована
             var groupId = await connection.ExecuteScalarAsync<Guid>(
-                @"INSERT INTO game_groups (telegram_chat_id, name, gm_telegram_id)
+                """
-                  VALUES (@ChatId, @ChatName, @GmId)
+                INSERT INTO game_groups (telegram_chat_id, name, gm_telegram_id)
-                  ON CONFLICT (telegram_chat_id) DO UPDATE SET name = EXCLUDED.name
+                VALUES (@ChatId, @ChatName, @GmId)
-                  RETURNING id;",
+                ON CONFLICT (telegram_chat_id) DO UPDATE SET name = EXCLUDED.name
+                RETURNING id;
+                """,
                 new { ChatId = chatId, ChatName = chatTitle, GmId = gmId },
                 transaction);
 
@@ -94,29 +86,37 @@ public sealed class CreateSessionHandler(
                 messageThreadId = topic.MessageThreadId;
             }
 
-            // 3. Создаем сессии в цикле с общим batch_id
             var batchId = Guid.NewGuid();
             var sessions = new List<SessionBatchDto>();
 
-            foreach (var dt in scheduledTimes.OrderBy(d => d))
+            foreach (var scheduledAt in parseResult.ScheduledTimes.OrderBy(value => value))
             {
                 var sessionId = await connection.ExecuteScalarAsync<Guid>(
-                    @"INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id)
+                    """
-                      VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, 'Planned', @ThreadId)
+                    INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, thread_id)
-                      RETURNING id;",
+                    VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @ThreadId)
-                    new { BatchId = batchId, GroupId = groupId, Title = title, Link = link, ScheduledAt = dt, ThreadId = messageThreadId },
+                    RETURNING id;
+                    """,
+                    new
+                    {
+                        BatchId = batchId,
+                        GroupId = groupId,
+                        Title = title,
+                        Link = link,
+                        ScheduledAt = scheduledAt,
+                        ThreadId = messageThreadId,
+                        Status = SessionStatus.Planned
+                    },
                     transaction);
 
-                sessions.Add(new SessionBatchDto(sessionId, dt.UtcDateTime, "Planned"));
+                sessions.Add(new SessionBatchDto(sessionId, scheduledAt.UtcDateTime, SessionStatus.Planned));
             }
 
             await transaction.CommitAsync(cancellationToken);
             logger.LogInformation("Создан батч {BatchId} с {Count} сессиями в группе {GroupId}", batchId, sessions.Count, groupId);
 
-            // 4. Отправляем сообщение в чат
             var renderResult = SessionBatchRenderer.Render(title, sessions, Array.Empty<ParticipantBatchDto>());
 
-
             var batchMessage = await botClient.SendMessage(
                 chatId: chatId,
                 messageThreadId: messageThreadId,
@@ -125,12 +125,10 @@ public sealed class CreateSessionHandler(
                 replyMarkup: renderResult.Markup,
                 cancellationToken: cancellationToken);
 
-            // 4b. Сохраняем message_id батч-сообщения для дальнейшего редактирования
             await connection.ExecuteAsync(
                 "UPDATE sessions SET batch_message_id = @MsgId WHERE batch_id = @BatchId",
                 new { MsgId = batchMessage.MessageId, BatchId = batchId });
 
-            // 5. Удаляем исходное сообщение с командой /newsession, чтобы не спамить
             try
             {
                 await botClient.DeleteMessage(

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

@@ -0,0 +1,69 @@
+using GmRelay.Shared.Domain;
+
+namespace GmRelay.Bot.Features.Sessions.CreateSession;
+
+internal sealed record NewSessionParseResult(
+    string? Title,
+    string? Link,
+    IReadOnlyList<DateTimeOffset> ScheduledTimes,
+    IReadOnlyList<string> PastTimeInputs,
+    IReadOnlyList<string> InvalidTimeInputs)
+{
+    public bool IsValid =>
+        !string.IsNullOrWhiteSpace(Title) &&
+        !string.IsNullOrWhiteSpace(Link) &&
+        ScheduledTimes.Count > 0;
+}
+
+internal static class NewSessionCommandParser
+{
+    private const string TitlePrefix = "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435:";
+    private const string TimePrefix = "\u0412\u0440\u0435\u043c\u044f:";
+    private const string LinkPrefix = "\u0421\u0441\u044b\u043b\u043a\u0430:";
+
+    public static NewSessionParseResult Parse(string? text, DateTimeOffset nowUtc)
+    {
+        string? title = null;
+        string? link = null;
+        var scheduledTimes = new List<DateTimeOffset>();
+        var pastTimeInputs = new List<string>();
+        var invalidTimeInputs = new List<string>();
+
+        foreach (var line in (text ?? string.Empty).Split('\n', StringSplitOptions.TrimEntries))
+        {
+            if (line.StartsWith(TitlePrefix, StringComparison.OrdinalIgnoreCase))
+            {
+                title = line[TitlePrefix.Length..].Trim();
+                continue;
+            }
+
+            if (line.StartsWith(LinkPrefix, StringComparison.OrdinalIgnoreCase))
+            {
+                link = line[LinkPrefix.Length..].Trim();
+                continue;
+            }
+
+            if (!line.StartsWith(TimePrefix, StringComparison.OrdinalIgnoreCase))
+            {
+                continue;
+            }
+
+            var timeInput = line[TimePrefix.Length..].Trim();
+            if (!MoscowTime.TryParseMoscow(timeInput, out var scheduledAt))
+            {
+                invalidTimeInputs.Add(timeInput);
+                continue;
+            }
+
+            if (scheduledAt <= nowUtc)
+            {
+                pastTimeInputs.Add(timeInput);
+                continue;
+            }
+
+            scheduledTimes.Add(scheduledAt);
+        }
+
+        return new NewSessionParseResult(title, link, scheduledTimes, pastTimeInputs, invalidTimeInputs);
+    }
+}

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

@@ -1,5 +1,6 @@
 using System.Text;
 using Dapper;
+using GmRelay.Shared.Domain;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types;
@@ -21,10 +22,10 @@ public sealed class ExportCalendarHandler(
               FROM sessions s
               JOIN game_groups g ON s.group_id = g.id
               WHERE g.telegram_chat_id = @ChatId 
-                AND s.status = 'Planned' 
+                AND s.status = @Planned
                 AND s.scheduled_at > NOW()
               ORDER BY s.scheduled_at ASC",
-            new { ChatId = message.Chat.Id });
+            new { ChatId = message.Chat.Id, Planned = SessionStatus.Planned });
 
         var sessionsList = sessions.ToList();
 

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

@@ -80,10 +80,10 @@ public sealed class DeleteSessionHandler(
               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.telegram_chat_id = @ChatId AND s.status != @Cancelled AND s.scheduled_at > NOW()
               GROUP BY s.id, s.title, s.scheduled_at, s.status, g.gm_telegram_id
               ORDER BY s.scheduled_at ASC",
-            new { ChatId = command.ChatId });
+            new { ChatId = command.ChatId, Cancelled = SessionStatus.Cancelled });
 
         var sessionsList = sessions.ToList();
 

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

@@ -23,10 +23,10 @@ public sealed class ListSessionsHandler(
               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.telegram_chat_id = @ChatId AND s.status != @Cancelled AND s.scheduled_at > NOW()
               GROUP BY s.id, s.title, s.scheduled_at, s.status, g.gm_telegram_id
               ORDER BY s.scheduled_at ASC",
-            new { ChatId = message.Chat.Id });
+            new { ChatId = message.Chat.Id, Cancelled = SessionStatus.Cancelled });
 
         var sessionsList = sessions.ToList();
 

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

@@ -154,10 +154,10 @@ public sealed class HandleRescheduleTimeInputHandler(
 
         await connection.ExecuteAsync(
             """
-            UPDATE sessions SET scheduled_at = @NewTime, status = 'Planned', updated_at = now()
+            UPDATE sessions SET scheduled_at = @NewTime, status = @Status, updated_at = now()
             WHERE id = @SessionId
             """,
-            new { NewTime = newTime, proposal.SessionId },
+            new { NewTime = newTime, proposal.SessionId, Status = SessionStatus.Planned },
             transaction);
 
         await connection.ExecuteAsync(

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

@@ -1,25 +1,20 @@
 using Dapper;
 using GmRelay.Shared.Domain;
 using GmRelay.Shared.Rendering;
-using GmRelay.Bot.Features.Sessions.CreateSession;
 using Npgsql;
 using Telegram.Bot;
 using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
 
-// ── Command ──────────────────────────────────────────────────────────
-
 public sealed record HandleRescheduleVoteCommand(
     Guid ProposalId,
-    string Vote,           // "yes" or "no"
+    string Vote,
     long TelegramUserId,
     string CallbackQueryId,
     long ChatId,
     int MessageId);
 
-// ── DTOs ─────────────────────────────────────────────────────────────
-
 internal sealed record VoteProposalDto(
     Guid Id,
     Guid SessionId,
@@ -32,17 +27,6 @@ internal sealed record VoteProposalDto(
     int? ConfirmationMessageId,
     int? BatchMessageId);
 
-internal sealed record VoteCountDto(int Total, int Approved);
-
-// ── Handler ──────────────────────────────────────────────────────────
-
-/// <summary>
-/// Handles "✅ Согласен" / "❌ Против" votes on a reschedule proposal.
-/// 
-/// If anyone votes no → proposal rejected, old time stays.
-/// If all vote yes → session time updated, batch message re-rendered,
-/// session status reset to Planned so confirmation triggers work correctly.
-/// </summary>
 public sealed class HandleRescheduleVoteHandler(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
@@ -53,12 +37,15 @@ public sealed class HandleRescheduleVoteHandler(
         await using var connection = await dataSource.OpenConnectionAsync(ct);
         await using var transaction = await connection.BeginTransactionAsync(ct);
 
-        // 1. Load proposal + session info
         var proposal = await connection.QuerySingleOrDefaultAsync<VoteProposalDto>(
             """
-            SELECT rp.id AS Id, rp.session_id AS SessionId, rp.proposed_at AS ProposedAt,
+            SELECT rp.id AS Id,
-                   s.title AS Title, s.scheduled_at AS CurrentScheduledAt,
+                   rp.session_id AS SessionId,
-                   s.batch_id AS BatchId, s.status AS SessionStatus,
+                   rp.proposed_at AS ProposedAt,
+                   s.title AS Title,
+                   s.scheduled_at AS CurrentScheduledAt,
+                   s.batch_id AS BatchId,
+                   s.status AS SessionStatus,
                    s.confirmation_message_id AS ConfirmationMessageId,
                    s.batch_message_id AS BatchMessageId,
                    g.telegram_chat_id AS TelegramChatId
@@ -72,12 +59,13 @@ public sealed class HandleRescheduleVoteHandler(
 
         if (proposal is null)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId,
+            await bot.AnswerCallbackQuery(
-                "Голосование уже завершено или не найдено.", cancellationToken: ct);
+                command.CallbackQueryId,
+                "Голосование уже завершено или не найдено.",
+                cancellationToken: ct);
             return;
         }
 
-        // 2. Verify voter is a participant of this session
         var playerId = await connection.ExecuteScalarAsync<Guid?>(
             """
             SELECT p.id
@@ -92,23 +80,52 @@ public sealed class HandleRescheduleVoteHandler(
 
         if (playerId is null)
         {
-            await bot.AnswerCallbackQuery(command.CallbackQueryId,
+            await bot.AnswerCallbackQuery(
-                "Вы не являетесь участником этой сессии.", cancellationToken: ct);
+                command.CallbackQueryId,
+                "Вы не являетесь участником этой сессии.",
+                cancellationToken: ct);
             return;
         }
 
-        // 3. Record vote (upsert)
+        await connection.ExecuteAsync(
-        var inserted = await connection.ExecuteAsync(
             """
             INSERT INTO reschedule_votes (proposal_id, player_id, vote)
             VALUES (@ProposalId, @PlayerId, @Vote)
-            ON CONFLICT (proposal_id, player_id) DO UPDATE SET vote = EXCLUDED.vote, voted_at = now()
+            ON CONFLICT (proposal_id, player_id) DO UPDATE
+            SET vote = EXCLUDED.vote,
+                voted_at = now()
             """,
             new { command.ProposalId, PlayerId = playerId.Value, command.Vote },
             transaction);
 
-        // 4. Handle "no" vote — immediately reject
+        var participants = command.Vote.Equals("no", StringComparison.OrdinalIgnoreCase)
-        if (command.Vote == "no")
+            ? new List<VoteParticipantDto>()
+            : (await connection.QueryAsync<VoteParticipantDto>(
+                """
+                SELECT p.id AS PlayerId,
+                       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
+                """,
+                new { proposal.SessionId },
+                transaction)).ToList();
+
+        var approvedPlayerIds = command.Vote.Equals("no", StringComparison.OrdinalIgnoreCase)
+            ? new HashSet<Guid>()
+            : (await connection.QueryAsync<Guid>(
+                """
+                SELECT player_id
+                FROM reschedule_votes
+                WHERE proposal_id = @ProposalId AND vote = 'yes'
+                """,
+                new { command.ProposalId },
+                transaction)).ToHashSet();
+
+        var decision = RescheduleVoteRules.Evaluate(command.Vote, participants.Count, approvedPlayerIds.Count);
+
+        if (decision.Outcome == RescheduleVoteOutcome.Rejected)
         {
             await connection.ExecuteAsync(
                 "UPDATE reschedule_proposals SET status = 'Rejected' WHERE id = @Id",
@@ -117,12 +134,10 @@ public sealed class HandleRescheduleVoteHandler(
 
             await transaction.CommitAsync(ct);
 
-            // Get voter's name
             var voterName = await connection.QuerySingleOrDefaultAsync<string>(
-                "SELECT display_name FROM players WHERE telegram_id = @TgId",
+                "SELECT display_name FROM players WHERE telegram_id = @TelegramUserId",
-                new { TgId = command.TelegramUserId });
+                new { command.TelegramUserId });
 
-            // Update voting message — show rejection
             try
             {
                 await bot.EditMessageText(
@@ -137,49 +152,26 @@ public sealed class HandleRescheduleVoteHandler(
                 logger.LogWarning(ex, "Failed to update vote message after rejection");
             }
 
-            await bot.AnswerCallbackQuery(command.CallbackQueryId, "Вы проголосовали против переноса.", cancellationToken: ct);
+            await bot.AnswerCallbackQuery(command.CallbackQueryId, decision.CallbackText, cancellationToken: ct);
             logger.LogInformation("Reschedule proposal {ProposalId} rejected by player {PlayerId}", command.ProposalId, playerId);
             return;
         }
 
-        // 5. Handle "yes" vote — check if all approved
+        if (decision.ShouldRescheduleSession)
-        var participants = (await connection.QueryAsync<VoteParticipantDto>(
-            """
-            SELECT p.id AS PlayerId, 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
-            """,
-            new { proposal.SessionId },
-            transaction)).ToList();
-
-        var approvedPlayerIds = (await connection.QueryAsync<Guid>(
-            """
-            SELECT player_id FROM reschedule_votes
-            WHERE proposal_id = @ProposalId AND vote = 'yes'
-            """,
-            new { command.ProposalId },
-            transaction)).ToHashSet();
-
-        var allApproved = approvedPlayerIds.Count == participants.Count;
-
-        if (allApproved)
         {
-            // 6. All approved — reschedule!
+            var newTime = new DateTimeOffset(proposal.ProposedAt, TimeSpan.Zero);
-            var newTime = new DateTimeOffset(proposal.ProposedAt, TimeSpan.Zero); // ProposedAt is stored in UTC
 
-            // Update session time and reset status to Planned for fresh notification cycle
             await connection.ExecuteAsync(
                 """
                 UPDATE sessions
                 SET scheduled_at = @NewTime,
-                    status = 'Planned',
+                    status = @Status,
                     confirmation_message_id = NULL,
                     link_message_id = NULL,
                     updated_at = now()
                 WHERE id = @SessionId
                 """,
-                new { NewTime = newTime, proposal.SessionId },
+                new { NewTime = newTime, proposal.SessionId, Status = SessionStatus.Planned },
                 transaction);
 
             await connection.ExecuteAsync(
@@ -187,19 +179,21 @@ public sealed class HandleRescheduleVoteHandler(
                 new { Id = command.ProposalId },
                 transaction);
 
-            // Reset all participant RSVP to Pending for the new confirmation cycle
+            if (decision.ShouldResetParticipantRsvps)
-            await connection.ExecuteAsync(
+            {
-                """
+                await connection.ExecuteAsync(
-                UPDATE session_participants
+                    """
-                SET rsvp_status = 'Pending', responded_at = NULL
+                    UPDATE session_participants
-                WHERE session_id = @SessionId AND is_gm = false
+                    SET rsvp_status = 'Pending',
-                """,
+                        responded_at = NULL
-                new { proposal.SessionId },
+                    WHERE session_id = @SessionId AND is_gm = false
-                transaction);
+                    """,
+                    new { proposal.SessionId },
+                    transaction);
+            }
 
             await transaction.CommitAsync(ct);
 
-            // Update voting message — show approval
             try
             {
                 await bot.EditMessageText(
@@ -214,21 +208,24 @@ public sealed class HandleRescheduleVoteHandler(
                 logger.LogWarning(ex, "Failed to update vote message after approval");
             }
 
-            // Re-render batch message
             await TryUpdateBatchMessage(proposal, ct);
 
-            logger.LogInformation("Session {SessionId} rescheduled to {NewTime} (proposal {ProposalId})",
+            logger.LogInformation(
-                proposal.SessionId, newTime, command.ProposalId);
+                "Session {SessionId} rescheduled to {NewTime} (proposal {ProposalId})",
+                proposal.SessionId,
+                newTime,
+                command.ProposalId);
         }
         else
         {
-            // Not all voted yet — update the voting message to show progress
             await transaction.CommitAsync(ct);
 
             var voteText = HandleRescheduleTimeInputHandler.BuildVotingMessage(
-                proposal.Title, proposal.CurrentScheduledAt,
+                proposal.Title,
+                proposal.CurrentScheduledAt,
                 new DateTimeOffset(proposal.ProposedAt, TimeSpan.Zero),
-                participants, approvedPlayerIds);
+                participants,
+                approvedPlayerIds);
 
             var keyboard = new InlineKeyboardMarkup([
                 [
@@ -253,15 +250,9 @@ public sealed class HandleRescheduleVoteHandler(
             }
         }
 
-        await bot.AnswerCallbackQuery(command.CallbackQueryId,
+        await bot.AnswerCallbackQuery(command.CallbackQueryId, decision.CallbackText, cancellationToken: ct);
-            allApproved ? "Вы подтвердили перенос! Все согласны — время обновлено." : "Вы подтвердили перенос!",
-            cancellationToken: ct);
     }
 
-    /// <summary>
-    /// Re-renders the batch schedule message to reflect the updated session time.
-    /// If batch_message_id is stored, edits the original message. Otherwise sends a notification.
-    /// </summary>
     private async Task TryUpdateBatchMessage(VoteProposalDto proposal, CancellationToken ct)
     {
         try
@@ -274,7 +265,9 @@ public sealed class HandleRescheduleVoteHandler(
 
             var batchParticipants = (await connection.QueryAsync<ParticipantBatchDto>(
                 """
-                SELECT sp.session_id AS SessionId, p.display_name AS DisplayName, p.telegram_username AS TelegramUsername
+                SELECT sp.session_id AS SessionId,
+                       p.display_name AS DisplayName,
+                       p.telegram_username AS TelegramUsername
                 FROM session_participants sp
                 JOIN players p ON sp.player_id = p.id
                 JOIN sessions s ON sp.session_id = s.id
@@ -285,7 +278,6 @@ public sealed class HandleRescheduleVoteHandler(
 
             if (proposal.BatchMessageId.HasValue)
             {
-                // Edit the original batch schedule message in-place
                 var renderResult = SessionBatchRenderer.Render(proposal.Title, batchSessions, batchParticipants);
 
                 await bot.EditMessageText(
@@ -298,10 +290,9 @@ public sealed class HandleRescheduleVoteHandler(
             }
             else
             {
-                // Fallback for sessions created before V005 migration (no batch_message_id)
                 await bot.SendMessage(
                     chatId: proposal.TelegramChatId,
-                    text: $"📢 Расписание обновлено! Сессия «{proposal.Title}» перенесена на <b>{proposal.ProposedAt.FormatMoscow()}</b> (МСК).",
+                    text: $"📣 Расписание обновлено! Сессия «{proposal.Title}» перенесена на <b>{proposal.ProposedAt.FormatMoscow()}</b> (МСК).",
                     parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
                     cancellationToken: ct);
             }

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

@@ -1,4 +1,5 @@
 using Dapper;
+using GmRelay.Shared.Domain;
 using Npgsql;
 using Telegram.Bot;
 
@@ -39,9 +40,9 @@ public sealed class InitiateRescheduleHandler(
             SELECT s.title AS Title, g.gm_telegram_id AS GmId
             FROM sessions s
             JOIN game_groups g ON s.group_id = g.id
-            WHERE s.id = @SessionId AND s.status != 'Cancelled'
+            WHERE s.id = @SessionId AND s.status != @Cancelled
             """,
-            new { command.SessionId });
+            new { command.SessionId, Cancelled = SessionStatus.Cancelled });
 
         if (session is null)
         {

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

@@ -0,0 +1,39 @@
+namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
+
+internal enum RescheduleVoteOutcome
+{
+    Pending,
+    Rejected,
+    Approved
+}
+
+internal sealed record RescheduleVoteDecision(
+    RescheduleVoteOutcome Outcome,
+    string CallbackText,
+    bool ShouldRescheduleSession,
+    bool ShouldResetParticipantRsvps);
+
+internal static class RescheduleVoteRules
+{
+    public static RescheduleVoteDecision Evaluate(string vote, int totalParticipants, int approvedParticipants)
+    {
+        if (string.Equals(vote, "no", StringComparison.OrdinalIgnoreCase))
+        {
+            return new RescheduleVoteDecision(
+                Outcome: RescheduleVoteOutcome.Rejected,
+                CallbackText: "\u0412\u044b \u043f\u0440\u043e\u0433\u043e\u043b\u043e\u0441\u043e\u0432\u0430\u043b\u0438 \u043f\u0440\u043e\u0442\u0438\u0432 \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0430.",
+                ShouldRescheduleSession: false,
+                ShouldResetParticipantRsvps: false);
+        }
+
+        var everyoneApproved = approvedParticipants == totalParticipants;
+
+        return new RescheduleVoteDecision(
+            Outcome: everyoneApproved ? RescheduleVoteOutcome.Approved : RescheduleVoteOutcome.Pending,
+            CallbackText: everyoneApproved
+                ? "\u0412\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441! \u0412\u0441\u0435 \u0441\u043e\u0433\u043b\u0430\u0441\u043d\u044b \u2014 \u0432\u0440\u0435\u043c\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u043e."
+                : "\u0412\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441!",
+            ShouldRescheduleSession: everyoneApproved,
+            ShouldResetParticipantRsvps: everyoneApproved);
+    }
+}

src/GmRelay.Bot/GmRelay.Bot.csproj

@@ -22,7 +22,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Aspire.Npgsql" Version="13.2.1" />
+    <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="dbup-postgresql" Version="7.0.1" />

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

@@ -0,0 +1,47 @@
+using System.Text.RegularExpressions;
+using Npgsql;
+
+namespace GmRelay.Bot.Infrastructure.Logging;
+
+public static partial class SecretRedactor
+{
+    public static string RedactConnectionString(string? connectionString)
+    {
+        if (string.IsNullOrWhiteSpace(connectionString))
+        {
+            return string.Empty;
+        }
+
+        try
+        {
+            var builder = new NpgsqlConnectionStringBuilder(connectionString);
+            if (!string.IsNullOrWhiteSpace(builder.Password))
+            {
+                builder.Password = "***";
+            }
+
+            return builder.ToString();
+        }
+        catch (ArgumentException)
+        {
+            return RedactText(connectionString);
+        }
+    }
+
+    public static string RedactText(string? text)
+    {
+        if (string.IsNullOrWhiteSpace(text))
+        {
+            return string.Empty;
+        }
+
+        return SecretKeyValueRegex().Replace(
+            text,
+            static match => $"{match.Groups["key"].Value}={GetRedactedValue()}");
+    }
+
+    private static string GetRedactedValue() => "***";
+
+    [GeneratedRegex(@"(?<key>password|pwd|passwd|token|secret|api[-_]?key)\s*=\s*(?<value>[^;\s,]+)", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant)]
+    private static partial Regex SecretKeyValueRegex();
+}

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

@@ -0,0 +1,8 @@
+using Telegram.Bot.Types;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+public interface ITelegramUpdateHandler
+{
+    Task RouteAsync(Update update, CancellationToken ct);
+}

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

@@ -0,0 +1,14 @@
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+public interface ITelegramUpdateSource
+{
+    Task<Update[]> GetUpdatesAsync(
+        int offset,
+        int? limit = null,
+        int? timeout = null,
+        IEnumerable<UpdateType>? allowedUpdates = null,
+        CancellationToken cancellationToken = default);
+}

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

@@ -1,4 +1,3 @@
-using Telegram.Bot;
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
 
@@ -9,35 +8,21 @@ namespace GmRelay.Bot.Infrastructure.Telegram;
 /// Stateless — all state is in PostgreSQL. Safe to restart at any time.
 /// </summary>
 public sealed class TelegramBotService(
-    ITelegramBotClient bot,
+    ITelegramUpdateSource updateSource,
-    UpdateRouter router,
+    ITelegramUpdateHandler updateHandler,
     ILogger<TelegramBotService> logger) : BackgroundService
 {
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
     {
         logger.LogInformation("Telegram bot polling started");
 
-        // Skip any pending updates from before this startup
+        var offset = await GetStartupOffsetAsync(stoppingToken);
-        try
-        {
-            var pending = await bot.GetUpdates(offset: -1, limit: 1, cancellationToken: stoppingToken);
-            if (pending.Length > 0)
-            {
-                logger.LogInformation("Skipped {Count} pending update(s)", pending[^1].Id);
-            }
-        }
-        catch (Exception ex)
-        {
-            logger.LogWarning(ex, "Failed to clear pending updates, continuing anyway");
-        }
-
-        var offset = 0;
 
         while (!stoppingToken.IsCancellationRequested)
         {
             try
             {
-                var updates = await bot.GetUpdates(
+                var updates = await updateSource.GetUpdatesAsync(
                     offset: offset,
                     timeout: 30,
                     allowedUpdates: [UpdateType.Message, UpdateType.CallbackQuery],
@@ -47,7 +32,7 @@ public sealed class TelegramBotService(
                 {
                     try
                     {
-                        await router.RouteAsync(update, stoppingToken);
+                        await updateHandler.RouteAsync(update, stoppingToken);
                     }
                     catch (Exception ex)
                     {
@@ -70,4 +55,33 @@ public sealed class TelegramBotService(
 
         logger.LogInformation("Telegram bot polling stopped");
     }
+
+    private async Task<int> GetStartupOffsetAsync(CancellationToken stoppingToken)
+    {
+        try
+        {
+            var pending = await updateSource.GetUpdatesAsync(
+                offset: -1,
+                limit: 1,
+                cancellationToken: stoppingToken);
+
+            if (pending.Length == 0)
+            {
+                return 0;
+            }
+
+            var startupOffset = pending[^1].Id + 1;
+            logger.LogInformation(
+                "Skipping pending updates through {LastPendingUpdateId}; starting polling from offset {StartupOffset}",
+                pending[^1].Id,
+                startupOffset);
+
+            return startupOffset;
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "Failed to determine startup offset, continuing from offset 0");
+            return 0;
+        }
+    }
 }

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

@@ -0,0 +1,21 @@
+using Telegram.Bot;
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+
+namespace GmRelay.Bot.Infrastructure.Telegram;
+
+public sealed class TelegramUpdateSource(ITelegramBotClient bot) : ITelegramUpdateSource
+{
+    public Task<Update[]> GetUpdatesAsync(
+        int offset,
+        int? limit = null,
+        int? timeout = null,
+        IEnumerable<UpdateType>? allowedUpdates = null,
+        CancellationToken cancellationToken = default) =>
+        bot.GetUpdates(
+            offset: offset,
+            limit: limit,
+            timeout: timeout,
+            allowedUpdates: allowedUpdates,
+            cancellationToken: cancellationToken);
+}

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

@@ -28,7 +28,7 @@ public sealed class UpdateRouter(
     HandleRescheduleTimeInputHandler rescheduleTimeInputHandler,
     HandleRescheduleVoteHandler rescheduleVoteHandler,
     ITelegramBotClient bot,
-    ILogger<UpdateRouter> logger)
+    ILogger<UpdateRouter> logger) : ITelegramUpdateHandler
 {
     public async Task RouteAsync(Update update, CancellationToken ct)
     {

src/GmRelay.Bot/Program.cs

@@ -4,6 +4,7 @@ using GmRelay.Bot.Features.Reminders.SendJoinLink;
 using GmRelay.Bot.Features.Sessions.CreateSession;
 using GmRelay.Bot.Features.Sessions.RescheduleSession;
 using GmRelay.Bot.Infrastructure.Database;
+using GmRelay.Bot.Infrastructure.Logging;
 using GmRelay.Bot.Infrastructure.Scheduling;
 using GmRelay.Bot.Infrastructure.Telegram;
 using Npgsql;
@@ -20,11 +21,16 @@ builder.AddServiceDefaults();
 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.");
 
-    Console.WriteLine($"[DBG] Master ConnectionString => {connectionString}");
+    var logger = loggerFactory.CreateLogger("GmRelay.Bot.Startup");
+    logger.LogInformation(
+        "Configured PostgreSQL data source with connection string {ConnectionString}",
+        SecretRedactor.RedactConnectionString(connectionString));
+
     return NpgsqlDataSource.Create(connectionString);
 });
 
@@ -40,6 +46,7 @@ builder.Services.AddSingleton<ITelegramBotClient>(sp =>
             "Telegram:BotToken is required. Set via environment variable Telegram__BotToken or appsettings.json.");
     return new TelegramBotClient(token);
 });
+builder.Services.AddSingleton<ITelegramUpdateSource, TelegramUpdateSource>();
 
 // ── Feature handlers (explicit registration — AOT safe) ──────────────
 builder.Services.AddSingleton<SendConfirmationHandler>();
@@ -57,6 +64,7 @@ builder.Services.AddSingleton<HandleRescheduleVoteHandler>();
 
 // ── Telegram infrastructure ──────────────────────────────────────────
 builder.Services.AddSingleton<UpdateRouter>();
+builder.Services.AddSingleton<ITelegramUpdateHandler>(sp => sp.GetRequiredService<UpdateRouter>());
 builder.Services.AddHostedService<TelegramBotService>();
 
 // ── Session scheduler ────────────────────────────────────────────────

src/GmRelay.Bot/Properties/AssemblyInfo.cs

@@ -0,0 +1,3 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("GmRelay.Bot.Tests")]

src/GmRelay.Shared/Domain/SessionStatus.cs

@@ -1,3 +1,5 @@
+using System.Collections.Frozen;
+
 namespace GmRelay.Shared.Domain;
 
 public static class SessionStatus
@@ -6,4 +8,13 @@ public static class SessionStatus
     public const string ConfirmationSent = "ConfirmationSent";
     public const string Confirmed = "Confirmed";
     public const string Cancelled = "Cancelled";
+
+    public static IReadOnlySet<string> All { get; } =
+        new[] { Planned, ConfirmationSent, Confirmed, Cancelled }
+            .ToFrozenSet(StringComparer.Ordinal);
+
+    public static bool IsKnown(string status) => All.Contains(status);
+
+    public static bool IsCancelled(string status) =>
+        string.Equals(status, Cancelled, StringComparison.Ordinal);
 }

src/GmRelay.Shared/Rendering/SessionBatchRenderer.cs

@@ -36,14 +36,10 @@ public static class SessionBatchRenderer
                 messageText += "  <i>Пока никто не записался</i>\n";
             }
 
-            if (session.Status == "Cancelled")
+            if (SessionStatus.IsCancelled(session.Status))
             {
                 messageText += "❌ <i>Сессия отменена</i>\n\n";
             }
-            else if (session.Status == "RecruitmentClosed") 
-            {
-                messageText += "🔒 <i>Набор завершен</i>\n\n";
-            }
             else
             {
                 messageText += "\n";

src/GmRelay.Web/Components/App.razor

@@ -22,6 +22,21 @@
     <Routes @rendermode="InteractiveServer" />
     <ReconnectModal />
     <script src="@Assets["_framework/blazor.web.js"]"></script>
+    <script>
+        window.loadTelegramWidget = function (botUsername, authUrl) {
+            var container = document.getElementById('telegram-login-container');
+            if (!container) return;
+            container.innerHTML = '';
+            var script = document.createElement('script');
+            script.async = true;
+            script.src = 'https://telegram.org/js/telegram-widget.js?22';
+            script.setAttribute('data-telegram-login', botUsername);
+            script.setAttribute('data-size', 'large');
+            script.setAttribute('data-auth-url', authUrl);
+            script.setAttribute('data-request-access', 'write');
+            container.appendChild(script);
+        };
+    </script>
 </body>
 
 </html>

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

@@ -0,0 +1,27 @@
+@page "/access-denied"
+
+<PageTitle>Доступ запрещен — GM-Relay</PageTitle>
+
+<div class="page-container">
+    <div class="glass-card" style="max-width: 640px;">
+        <div class="empty-state">
+            <div class="empty-state-icon">⛔</div>
+            <div class="empty-state-title">Доступ запрещен</div>
+            <p class="empty-state-text">Эта группа или сессия недоступна для вашей учётной записи.</p>
+            <a href="/" class="btn-gm btn-gm-primary">← На главную</a>
+        </div>
+    </div>
+</div>
+
+@code {
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    protected override void OnInitialized()
+    {
+        if (HttpContext is not null && !HttpContext.Response.HasStarted)
+        {
+            HttpContext.Response.StatusCode = StatusCodes.Status403Forbidden;
+        }
+    }
+}

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

@@ -2,8 +2,10 @@
 @using GmRelay.Web.Services
 @using GmRelay.Shared.Domain
 @using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Authorization
 @attribute [Authorize]
-@inject SessionService SessionService
+@inject AuthorizedSessionService SessionService
+@inject AuthenticationStateProvider AuthStateProvider
 @inject NavigationManager Navigation
 
 <PageTitle>Редактирование сессии — GM-Relay</PageTitle>
@@ -73,19 +75,28 @@
     [Parameter] public Guid SessionId { get; set; }
     private WebSession? session;
     private SessionEditModel model = new();
-    private bool isSubmitting = false;
+    private bool isSubmitting;
     private string? errorMessage;
 
     protected override async Task OnInitializedAsync()
     {
-        session = await SessionService.GetSessionAsync(SessionId);
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
-        if (session != null)
+        if (!authState.User.TryGetTelegramId(out var telegramId))
         {
-            model.Title = session.Title;
+            Navigation.NavigateTo("/access-denied");
-            // Convert UTC to Moscow for the picker
+            return;
-            model.ScheduledAtLocal = session.ScheduledAt.ToMoscow();
-            model.JoinLink = session.JoinLink;
         }
+
+        session = await SessionService.GetSessionForGmAsync(SessionId, telegramId);
+        if (session is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
+        model.Title = session.Title;
+        model.ScheduledAtLocal = session.ScheduledAt.ToMoscow();
+        model.JoinLink = session.JoinLink;
     }
 
     private async Task HandleSubmit()
@@ -95,13 +106,22 @@
 
         try
         {
-            // The value from <input type="datetime-local"> is considered as "unspecified" or local to browser.
+            var authState = await AuthStateProvider.GetAuthenticationStateAsync();
-            // We treat it as Moscow time (UTC+3) and convert to UTC.
+            if (!authState.User.TryGetTelegramId(out var telegramId))
+            {
+                Navigation.NavigateTo("/access-denied");
+                return;
+            }
+
             var utcTime = new DateTimeOffset(model.ScheduledAtLocal, TimeSpan.FromHours(3)).ToUniversalTime().UtcDateTime;
 
-            await SessionService.UpdateSessionAsync(SessionId, model.Title, utcTime, model.JoinLink);
+            await SessionService.UpdateSessionForGmAsync(SessionId, telegramId, model.Title, utcTime, model.JoinLink);
             Navigation.NavigateTo($"/group/{session!.GroupId}");
         }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
         catch (Exception ex)
         {
             errorMessage = "Не удалось сохранить изменения: " + ex.Message;

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

@@ -2,8 +2,11 @@
 @using GmRelay.Web.Services
 @using GmRelay.Shared.Domain
 @using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Authorization
 @attribute [Authorize]
-@inject SessionService SessionService
+@inject AuthorizedSessionService SessionService
+@inject AuthenticationStateProvider AuthStateProvider
+@inject NavigationManager Navigation
 
 <PageTitle>Сессии группы — GM-Relay</PageTitle>
 
@@ -112,7 +115,18 @@
 
     protected override async Task OnInitializedAsync()
     {
-        sessions = await SessionService.GetUpcomingSessionsAsync(GroupId);
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        if (!authState.User.TryGetTelegramId(out var telegramId))
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
+        sessions = await SessionService.GetUpcomingSessionsForGmAsync(GroupId, telegramId);
+        if (sessions is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
     }
 
     private string GetStatusClass(string status) => status switch
@@ -120,15 +134,12 @@
         SessionStatus.Confirmed => "status-success",
         SessionStatus.Cancelled => "status-danger",
         SessionStatus.ConfirmationSent => "status-warning",
-        "Recruiting" => "status-info",
+        SessionStatus.Planned => "status-info",
-        "RecruitmentClosed" => "status-info",
         _ => "status-neutral"
     };
 
     private string TranslateStatus(string status) => status switch
     {
-        "Recruiting" => "Набор",
-        "RecruitmentClosed" => "Набор закрыт",
         SessionStatus.Planned => "Запланировано",
         SessionStatus.ConfirmationSent => "Ждём подтверждения",
         SessionStatus.Confirmed => "Подтверждено",

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

@@ -3,8 +3,9 @@
 @using Microsoft.AspNetCore.Components.Authorization
 @using GmRelay.Web.Services
 @attribute [Authorize]
-@inject SessionService SessionService
+@inject AuthorizedSessionService SessionService
 @inject AuthenticationStateProvider AuthStateProvider
+@inject NavigationManager Navigation
 
 <PageTitle>Панель управления — GM-Relay</PageTitle>
 
@@ -88,10 +89,12 @@
         var user = authState.User;
         userName = user.Identity?.Name ?? "Мастер Игры";
 
-        var telegramIdClaim = user.FindFirst("TelegramId")?.Value;
+        if (!user.TryGetTelegramId(out var telegramId))
-        if (long.TryParse(telegramIdClaim, out var telegramId))
         {
-            groups = await SessionService.GetGroupsForGmAsync(telegramId);
+            Navigation.NavigateTo("/access-denied");
+            return;
         }
+
+        groups = await SessionService.GetGroupsForGmAsync(telegramId);
     }
 }

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

@@ -2,6 +2,7 @@
 @using Microsoft.AspNetCore.Components.Authorization
 @inject NavigationManager Navigation
 @inject IConfiguration Configuration
+@inject IJSRuntime JS
 
 <PageTitle>Вход — GM-Relay</PageTitle>
 
@@ -18,13 +19,7 @@
             </div>
         }
 
-        <div id="telegram-login-container">
+        <div id="telegram-login-container"></div>
-            <script async src="https://telegram.org/js/telegram-widget.js?22"
-                    data-telegram-login="@BotUsername"
-                    data-size="large"
-                    data-auth-url="@AuthUrl"
-                    data-request-access="write"></script>
-        </div>
     </div>
 </div>
 
@@ -46,4 +41,12 @@
             }
         }
     }
+
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+        {
+            await JS.InvokeVoidAsync("loadTelegramWidget", BotUsername, AuthUrl);
+        }
+    }
 }

src/GmRelay.Web/Program.cs

@@ -21,7 +21,8 @@ builder.AddNpgsqlDataSource("gmrelaydb");
 
 // Add Services
 builder.Services.AddSingleton<TelegramAuthService>();
-builder.Services.AddSingleton<SessionService>();
+builder.Services.AddSingleton<ISessionStore, SessionService>();
+builder.Services.AddScoped<AuthorizedSessionService>();
 
 // Add Bot Client
 builder.Services.AddSingleton<ITelegramBotClient>(sp =>

src/GmRelay.Web/Services/AuthorizedSessionService.cs

@@ -0,0 +1,45 @@
+namespace GmRelay.Web.Services;
+
+public sealed class AuthorizedSessionService(ISessionStore sessionStore)
+{
+    public Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId) =>
+        sessionStore.GetGroupsForGmAsync(gmId);
+
+    public async Task<List<WebSession>?> GetUpcomingSessionsForGmAsync(Guid groupId, long gmId)
+    {
+        if (!await GroupBelongsToGmAsync(groupId, gmId))
+        {
+            return null;
+        }
+
+        return await sessionStore.GetUpcomingSessionsAsync(groupId);
+    }
+
+    public async Task<WebSession?> GetSessionForGmAsync(Guid sessionId, long gmId)
+    {
+        var session = await sessionStore.GetSessionAsync(sessionId);
+        if (session is null)
+        {
+            return null;
+        }
+
+        return await GroupBelongsToGmAsync(session.GroupId, gmId) ? session : null;
+    }
+
+    public async Task UpdateSessionForGmAsync(Guid sessionId, long gmId, string title, DateTime scheduledAt, string joinLink)
+    {
+        var session = await GetSessionForGmAsync(sessionId, gmId);
+        if (session is null)
+        {
+            throw new SessionAccessDeniedException(sessionId, gmId);
+        }
+
+        await sessionStore.UpdateSessionAsync(sessionId, session.GroupId, title, scheduledAt, joinLink);
+    }
+
+    private async Task<bool> GroupBelongsToGmAsync(Guid groupId, long gmId)
+    {
+        var group = await sessionStore.GetGroupAsync(groupId);
+        return group?.GmTelegramId == gmId;
+    }
+}

src/GmRelay.Web/Services/ClaimsPrincipalExtensions.cs

@@ -0,0 +1,9 @@
+using System.Security.Claims;
+
+namespace GmRelay.Web.Services;
+
+public static class ClaimsPrincipalExtensions
+{
+    public static bool TryGetTelegramId(this ClaimsPrincipal user, out long telegramId) =>
+        long.TryParse(user.FindFirst("TelegramId")?.Value, out telegramId);
+}

src/GmRelay.Web/Services/ISessionStore.cs

@@ -0,0 +1,10 @@
+namespace GmRelay.Web.Services;
+
+public interface ISessionStore
+{
+    Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId);
+    Task<WebGameGroup?> GetGroupAsync(Guid groupId);
+    Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId);
+    Task<WebSession?> GetSessionAsync(Guid sessionId);
+    Task UpdateSessionAsync(Guid sessionId, Guid groupId, string title, DateTime scheduledAt, string joinLink);
+}

src/GmRelay.Web/Services/SessionAccessDeniedException.cs

@@ -0,0 +1,4 @@
+namespace GmRelay.Web.Services;
+
+public sealed class SessionAccessDeniedException(Guid sessionId, long gmId)
+    : InvalidOperationException($"Session '{sessionId}' is not accessible for GM '{gmId}'.");

src/GmRelay.Web/Services/SessionService.cs

@@ -12,7 +12,7 @@ public sealed record WebSession(Guid Id, Guid GroupId, string Title, DateTime Sc
 public sealed class SessionService(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
-    ILogger<SessionService> logger)
+    ILogger<SessionService> logger) : ISessionStore
 {
     public async Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId)
     {
@@ -22,6 +22,14 @@ public sealed class SessionService(
             new { GmId = gmId })).ToList();
     }
 
+    public async Task<WebGameGroup?> GetGroupAsync(Guid groupId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return await conn.QuerySingleOrDefaultAsync<WebGameGroup>(
+            "SELECT id, telegram_chat_id AS TelegramChatId, name, gm_telegram_id AS GmTelegramId FROM game_groups WHERE id = @GroupId",
+            new { GroupId = groupId });
+    }
+
     public async Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId)
     {
         await using var conn = await dataSource.OpenConnectionAsync();
@@ -49,29 +57,41 @@ public sealed class SessionService(
             new { SessionId = sessionId });
     }
 
-    public async Task UpdateSessionAsync(Guid sessionId, string title, DateTime scheduledAt, string joinLink)
+    public async Task UpdateSessionAsync(Guid sessionId, Guid groupId, string title, DateTime scheduledAt, string joinLink)
     {
         await using var conn = await dataSource.OpenConnectionAsync();
         await using var transaction = await conn.BeginTransactionAsync();
 
-        // 1. Fetch current session with all required columns for WebSession record
+        var oldSession = await conn.QuerySingleOrDefaultAsync<WebSession>(
-        var oldSession = await conn.QuerySingleAsync<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
               FROM sessions s
               JOIN game_groups g ON g.id = s.group_id
-              WHERE s.id = @Id",
+              WHERE s.id = @Id AND s.group_id = @GroupId",
-            new { Id = sessionId }, transaction);
+            new { Id = sessionId, GroupId = groupId },
-
-        // 2. Update Session
-        await conn.ExecuteAsync(
-            @"UPDATE sessions SET title = @Title, scheduled_at = @ScheduledAt, join_link = @JoinLink, updated_at = now()
-              WHERE id = @Id",
-            new { Id = sessionId, Title = title, ScheduledAt = scheduledAt, JoinLink = joinLink },
             transaction);
 
-        // 3. Update all sessions in the same batch with new title (optional, usually batch shares title)
+        if (oldSession is null)
+        {
+            throw new SessionAccessDeniedException(sessionId, 0);
+        }
+
+        var updatedRows = await conn.ExecuteAsync(
+            @"UPDATE sessions
+              SET title = @Title,
+                  scheduled_at = @ScheduledAt,
+                  join_link = @JoinLink,
+                  updated_at = now()
+              WHERE id = @Id AND group_id = @GroupId",
+            new { Id = sessionId, GroupId = groupId, Title = title, ScheduledAt = scheduledAt, JoinLink = joinLink },
+            transaction);
+
+        if (updatedRows == 0)
+        {
+            throw new SessionAccessDeniedException(sessionId, 0);
+        }
+
         await conn.ExecuteAsync(
             "UPDATE sessions SET title = @Title WHERE batch_id = @BatchId",
             new { Title = title, BatchId = oldSession.BatchId },
@@ -79,7 +99,6 @@ public sealed class SessionService(
 
         await transaction.CommitAsync();
 
-        // 4. Send Telegram Notification
         var timeChanged = oldSession.ScheduledAt != scheduledAt;
         var notification = $"🔄 <b>Мастер обновил игру!</b>\n\n" +
                            $"📌 <b>{System.Net.WebUtility.HtmlEncode(title)}</b>\n" +
@@ -87,7 +106,6 @@ public sealed class SessionService(
 
         await bot.SendMessage(oldSession.TelegramChatId, notification, parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
 
-        // 5. Update Original Batch Message
         if (oldSession.BatchMessageId.HasValue)
         {
             await TryUpdateBatchMessageAsync(oldSession.BatchId, oldSession.TelegramChatId, oldSession.BatchMessageId.Value, title);
@@ -124,7 +142,6 @@ public sealed class SessionService(
         }
         catch (Exception ex)
         {
-            // Log but don't throw — message may be too old or have same content
             logger.LogWarning(ex, "Failed to update batch message {MessageId} in chat {ChatId}", messageId, chatId);
         }
     }

tests/GmRelay.Bot.Tests/Domain/SessionStatusTests.cs

@@ -0,0 +1,75 @@
+using System.Reflection;
+using GmRelay.Shared.Domain;
+
+namespace GmRelay.Bot.Tests.Domain;
+
+public sealed class SessionStatusTests
+{
+    [Fact]
+    public void All_ShouldContainOnlyCanonicalSessionStatuses()
+    {
+        var allProperty = typeof(SessionStatus).GetProperty(
+            "All",
+            BindingFlags.Public | BindingFlags.Static);
+
+        Assert.NotNull(allProperty);
+
+        var allStatusValues = Assert.IsAssignableFrom<IReadOnlySet<string>>(allProperty.GetValue(null));
+        var expectedStatusValues = new[]
+            {
+                SessionStatus.Planned,
+                SessionStatus.ConfirmationSent,
+                SessionStatus.Confirmed,
+                SessionStatus.Cancelled
+            }
+            .Order(StringComparer.Ordinal);
+
+        Assert.Equal(expectedStatusValues, allStatusValues.Order(StringComparer.Ordinal));
+    }
+
+    [Fact]
+    public void ProductionSources_ShouldNotReferenceLegacySessionStatuses()
+    {
+        var repositoryRoot = FindRepositoryRoot();
+        var productionFiles = Directory.EnumerateFiles(repositoryRoot, "*.*", SearchOption.AllDirectories)
+            .Where(path => IsProductionSource(path))
+            .ToList();
+
+        var legacyStatuses = new[] { "Recruit" + "ing", "Recruitment" + "Closed" };
+        var offenders = productionFiles
+            .SelectMany(path => legacyStatuses
+                .Where(status => File.ReadAllText(path).Contains(status, StringComparison.Ordinal))
+                .Select(status => $"{Path.GetRelativePath(repositoryRoot, path)} contains {status}"))
+            .ToList();
+
+        Assert.Empty(offenders);
+    }
+
+    private static bool IsProductionSource(string path)
+    {
+        var extension = Path.GetExtension(path);
+        var separator = Path.DirectorySeparatorChar;
+
+        return path.Contains($"{separator}src{separator}", StringComparison.Ordinal)
+            && !path.Contains($"{separator}bin{separator}", StringComparison.Ordinal)
+            && !path.Contains($"{separator}obj{separator}", StringComparison.Ordinal)
+            && extension is ".cs" or ".razor" or ".sql";
+    }
+
+    private static string FindRepositoryRoot()
+    {
+        var current = new DirectoryInfo(AppContext.BaseDirectory);
+
+        while (current is not null)
+        {
+            if (File.Exists(Path.Combine(current.FullName, "GM-Relay.slnx")))
+            {
+                return current.FullName;
+            }
+
+            current = current.Parent;
+        }
+
+        throw new InvalidOperationException("Could not find repository root.");
+    }
+}

tests/GmRelay.Bot.Tests/Features/Confirmation/HandleRsvp/RsvpFlowRulesTests.cs

@@ -0,0 +1,50 @@
+using GmRelay.Bot.Features.Confirmation.HandleRsvp;
+using GmRelay.Shared.Domain;
+
+namespace GmRelay.Bot.Tests.Features.Confirmation.HandleRsvp;
+
+public sealed class RsvpFlowRulesTests
+{
+    [Fact]
+    public void Evaluate_ShouldRevertAndAlert_WhenConfirmedSessionGetsDecline()
+    {
+        var decision = RsvpFlowRules.Evaluate(
+            RsvpStatus.Declined,
+            SessionStatus.Confirmed,
+            totalParticipants: 3,
+            confirmedParticipants: 2);
+
+        Assert.True(decision.ShouldAlertGm);
+        Assert.True(decision.ShouldRevertSessionToConfirmationSent);
+        Assert.False(decision.ShouldMarkSessionConfirmed);
+        Assert.Equal("Вы отказались от участия.", decision.CallbackText);
+    }
+
+    [Fact]
+    public void Evaluate_ShouldMarkConfirmed_WhenLastParticipantConfirms()
+    {
+        var decision = RsvpFlowRules.Evaluate(
+            RsvpStatus.Confirmed,
+            SessionStatus.ConfirmationSent,
+            totalParticipants: 3,
+            confirmedParticipants: 3);
+
+        Assert.True(decision.ShouldMarkSessionConfirmed);
+        Assert.True(decision.ShouldNotifyGroup);
+        Assert.True(decision.ShouldNotifyGm);
+    }
+
+    [Fact]
+    public void Evaluate_ShouldKeepWaiting_WhenNotEveryoneConfirmed()
+    {
+        var decision = RsvpFlowRules.Evaluate(
+            RsvpStatus.Confirmed,
+            SessionStatus.ConfirmationSent,
+            totalParticipants: 4,
+            confirmedParticipants: 2);
+
+        Assert.False(decision.ShouldMarkSessionConfirmed);
+        Assert.False(decision.ShouldNotifyGroup);
+        Assert.False(decision.ShouldNotifyGm);
+    }
+}

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

@@ -0,0 +1,68 @@
+using GmRelay.Bot.Features.Sessions.CreateSession;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.CreateSession;
+
+public sealed class NewSessionCommandParserTests
+{
+    [Fact]
+    public void Parse_ShouldExtractTitleLinkAndUpcomingTimes()
+    {
+        var nowUtc = new DateTimeOffset(2026, 4, 23, 12, 0, 0, TimeSpan.Zero);
+        var text = """
+            /newsession
+            Название: Curse of Strahd
+            Время: 24.04.2026 19:30
+            Время: 01.05.2026 20:00
+            Ссылка: https://example.test/room
+            """;
+
+        var result = NewSessionCommandParser.Parse(text, nowUtc);
+
+        Assert.True(result.IsValid);
+        Assert.Equal("Curse of Strahd", result.Title);
+        Assert.Equal("https://example.test/room", result.Link);
+        Assert.Equal(
+            [
+                new DateTimeOffset(2026, 4, 24, 16, 30, 0, TimeSpan.Zero),
+                new DateTimeOffset(2026, 5, 1, 17, 0, 0, TimeSpan.Zero)
+            ],
+            result.ScheduledTimes);
+        Assert.Empty(result.PastTimeInputs);
+        Assert.Empty(result.InvalidTimeInputs);
+    }
+
+    [Fact]
+    public void Parse_ShouldCollectPastAndInvalidTimes()
+    {
+        var nowUtc = new DateTimeOffset(2026, 4, 23, 12, 0, 0, TimeSpan.Zero);
+        var text = """
+            Название: Delta Green
+            Время: 20.04.2026 19:30
+            Время: 31.04.2026 19:30
+            Время: 25.04.2026 18:00
+            Ссылка: https://example.test/dg
+            """;
+
+        var result = NewSessionCommandParser.Parse(text, nowUtc);
+
+        Assert.True(result.IsValid);
+        Assert.Single(result.ScheduledTimes);
+        Assert.Equal(["20.04.2026 19:30"], result.PastTimeInputs);
+        Assert.Equal(["31.04.2026 19:30"], result.InvalidTimeInputs);
+    }
+
+    [Fact]
+    public void Parse_ShouldBeInvalid_WhenRequiredFieldsMissing()
+    {
+        var text = """
+            /newsession
+            Название: Blades in the Dark
+            Время: 25.04.2026 19:30
+            """;
+
+        var result = NewSessionCommandParser.Parse(text, DateTimeOffset.UtcNow);
+
+        Assert.False(result.IsValid);
+        Assert.Null(result.Link);
+    }
+}

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

@@ -0,0 +1,32 @@
+using GmRelay.Bot.Features.Sessions.RescheduleSession;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.RescheduleSession;
+
+public sealed class HandleRescheduleTimeInputHandlerTests
+{
+    [Fact]
+    public void BuildVotingMessage_ShouldShowApprovedAndPendingParticipants()
+    {
+        var approvedId = Guid.NewGuid();
+        var pendingId = Guid.NewGuid();
+        var currentTime = new DateTime(2026, 4, 25, 16, 30, 0, DateTimeKind.Utc);
+        var newTime = new DateTimeOffset(2026, 4, 26, 17, 0, 0, TimeSpan.Zero);
+        var participants = new List<VoteParticipantDto>
+        {
+            new(approvedId, "Alice", "alice"),
+            new(pendingId, "Bob", null)
+        };
+
+        var text = HandleRescheduleTimeInputHandler.BuildVotingMessage(
+            "Shadowrun",
+            currentTime,
+            newTime,
+            participants,
+            [approvedId]);
+
+        Assert.Contains("Shadowrun", text);
+        Assert.Contains("✅ @alice", text);
+        Assert.Contains("⏳ Bob", text);
+        Assert.Contains("Голоса: 1/2 ✅", text);
+    }
+}

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

@@ -0,0 +1,36 @@
+using GmRelay.Bot.Features.Sessions.RescheduleSession;
+
+namespace GmRelay.Bot.Tests.Features.Sessions.RescheduleSession;
+
+public sealed class RescheduleVoteRulesTests
+{
+    [Fact]
+    public void Evaluate_ShouldReject_WhenParticipantVotesNo()
+    {
+        var decision = RescheduleVoteRules.Evaluate("no", totalParticipants: 4, approvedParticipants: 3);
+
+        Assert.Equal(RescheduleVoteOutcome.Rejected, decision.Outcome);
+        Assert.False(decision.ShouldRescheduleSession);
+        Assert.Equal("Вы проголосовали против переноса.", decision.CallbackText);
+    }
+
+    [Fact]
+    public void Evaluate_ShouldApprove_WhenEveryoneVotedYes()
+    {
+        var decision = RescheduleVoteRules.Evaluate("yes", totalParticipants: 3, approvedParticipants: 3);
+
+        Assert.Equal(RescheduleVoteOutcome.Approved, decision.Outcome);
+        Assert.True(decision.ShouldRescheduleSession);
+        Assert.True(decision.ShouldResetParticipantRsvps);
+    }
+
+    [Fact]
+    public void Evaluate_ShouldStayPending_WhileVotesOutstanding()
+    {
+        var decision = RescheduleVoteRules.Evaluate("yes", totalParticipants: 5, approvedParticipants: 2);
+
+        Assert.Equal(RescheduleVoteOutcome.Pending, decision.Outcome);
+        Assert.False(decision.ShouldRescheduleSession);
+        Assert.False(decision.ShouldResetParticipantRsvps);
+    }
+}

tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj

@@ -20,6 +20,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\GmRelay.Bot\GmRelay.Bot.csproj" />
+    <ProjectReference Include="..\..\src\GmRelay.Web\GmRelay.Web.csproj" />
   </ItemGroup>
 
 </Project>

tests/GmRelay.Bot.Tests/Infrastructure/Logging/SecretRedactorTests.cs

@@ -0,0 +1,31 @@
+using GmRelay.Bot.Infrastructure.Logging;
+
+namespace GmRelay.Bot.Tests.Infrastructure.Logging;
+
+public sealed class SecretRedactorTests
+{
+    [Fact]
+    public void RedactConnectionString_ShouldMaskDatabasePassword()
+    {
+        var result = SecretRedactor.RedactConnectionString(
+            "Host=localhost;Port=5432;Database=gmrelay;Username=gmrelay;Password=super-secret");
+
+        Assert.Contains("Password=***", result);
+        Assert.DoesNotContain("super-secret", result);
+        Assert.Contains("Host=localhost", result);
+    }
+
+    [Fact]
+    public void RedactText_ShouldMaskKnownSecretKeys()
+    {
+        var result = SecretRedactor.RedactText(
+            "Password=super-secret Token=telegram-token apiKey=service-key");
+
+        Assert.DoesNotContain("super-secret", result);
+        Assert.DoesNotContain("telegram-token", result);
+        Assert.DoesNotContain("service-key", result);
+        Assert.Contains("Password=***", result);
+        Assert.Contains("Token=***", result);
+        Assert.Contains("apiKey=***", result);
+    }
+}

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

@@ -0,0 +1,101 @@
+using System.Reflection;
+using GmRelay.Bot.Infrastructure.Telegram;
+using Microsoft.Extensions.Logging.Abstractions;
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+
+namespace GmRelay.Bot.Tests.Infrastructure.Telegram;
+
+public sealed class TelegramBotServiceTests
+{
+    [Fact]
+    public async Task ExecuteAsync_ShouldStartPollingAfterLastPendingUpdate()
+    {
+        using var cts = new CancellationTokenSource();
+        var updateSource = new FakeTelegramUpdateSource(cts);
+        var updateHandler = new FakeTelegramUpdateHandler();
+        var service = new TelegramBotService(
+            updateSource,
+            updateHandler,
+            NullLogger<TelegramBotService>.Instance);
+
+        await InvokeExecuteAsync(service, cts.Token);
+
+        Assert.Empty(updateHandler.HandledUpdates);
+        Assert.Collection(
+            updateSource.Calls,
+            call =>
+            {
+                Assert.Equal(-1, call.Offset);
+                Assert.Equal(1, call.Limit);
+                Assert.Null(call.Timeout);
+                Assert.Null(call.AllowedUpdates);
+            },
+            call =>
+            {
+                Assert.Equal(43, call.Offset);
+                Assert.Null(call.Limit);
+                Assert.Equal(30, call.Timeout);
+                Assert.Equal([UpdateType.Message, UpdateType.CallbackQuery], call.AllowedUpdates);
+            });
+    }
+
+    private static async Task InvokeExecuteAsync(TelegramBotService service, CancellationToken cancellationToken)
+    {
+        var executeAsync = typeof(TelegramBotService).GetMethod(
+            "ExecuteAsync",
+            BindingFlags.Instance | BindingFlags.NonPublic);
+
+        Assert.NotNull(executeAsync);
+
+        var task = executeAsync.Invoke(service, [cancellationToken]) as Task;
+        Assert.NotNull(task);
+
+        await task;
+    }
+
+    private sealed class FakeTelegramUpdateHandler : ITelegramUpdateHandler
+    {
+        public List<Update> HandledUpdates { get; } = [];
+
+        public Task RouteAsync(Update update, CancellationToken ct)
+        {
+            HandledUpdates.Add(update);
+            return Task.CompletedTask;
+        }
+    }
+
+    private sealed class FakeTelegramUpdateSource(CancellationTokenSource cts) : ITelegramUpdateSource
+    {
+        public List<PollCall> Calls { get; } = [];
+
+        public Task<Update[]> GetUpdatesAsync(
+            int offset,
+            int? limit = null,
+            int? timeout = null,
+            IEnumerable<UpdateType>? allowedUpdates = null,
+            CancellationToken cancellationToken = default)
+        {
+            Calls.Add(new PollCall(offset, limit, timeout, allowedUpdates?.ToArray()));
+
+            return Calls.Count switch
+            {
+                1 => Task.FromResult(new[] { new Update { Id = 42 } }),
+                2 => ReturnAndCancelAsync(),
+                _ => throw new InvalidOperationException("Unexpected polling call.")
+            };
+        }
+
+        private Task<Update[]> ReturnAndCancelAsync()
+        {
+            cts.Cancel();
+            return Task.FromResult(Array.Empty<Update>());
+        }
+    }
+
+    private sealed record PollCall(
+        int Offset,
+        int? Limit,
+        int? Timeout,
+        UpdateType[]? AllowedUpdates);
+}

tests/GmRelay.Bot.Tests/Rendering/SessionBatchRendererTests.cs

@@ -0,0 +1,50 @@
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Rendering;
+
+namespace GmRelay.Bot.Tests.Rendering;
+
+public sealed class SessionBatchRendererTests
+{
+    [Fact]
+    public void Render_ShouldOrderSessionsAndSkipButtonsForCancelledSessions()
+    {
+        var firstSessionId = Guid.NewGuid();
+        var secondSessionId = Guid.NewGuid();
+        var cancelledSessionId = Guid.NewGuid();
+
+        var sessions = new[]
+        {
+            new SessionBatchDto(secondSessionId, new DateTime(2026, 4, 27, 18, 0, 0, DateTimeKind.Utc), SessionStatus.Planned),
+            new SessionBatchDto(cancelledSessionId, new DateTime(2026, 4, 28, 18, 0, 0, DateTimeKind.Utc), SessionStatus.Cancelled),
+            new SessionBatchDto(firstSessionId, new DateTime(2026, 4, 26, 18, 0, 0, DateTimeKind.Utc), SessionStatus.Planned)
+        };
+        var participants = new[]
+        {
+            new ParticipantBatchDto(secondSessionId, "Alice", "alice"),
+            new ParticipantBatchDto(cancelledSessionId, "Bob", null)
+        };
+
+        var result = SessionBatchRenderer.Render("Campaign", sessions, participants);
+        var text = result.Text;
+        var buttons = result.Markup.InlineKeyboard.SelectMany(row => row).ToList();
+
+        var firstIndex = text.IndexOf(sessions[2].ScheduledAt.FormatMoscow(), StringComparison.Ordinal);
+        var secondIndex = text.IndexOf(sessions[0].ScheduledAt.FormatMoscow(), StringComparison.Ordinal);
+        var thirdIndex = text.IndexOf(sessions[1].ScheduledAt.FormatMoscow(), StringComparison.Ordinal);
+
+        Assert.Contains("Campaign", text);
+        Assert.True(firstIndex < secondIndex);
+        Assert.True(secondIndex < thirdIndex);
+        Assert.Contains("@alice", text);
+        Assert.Contains("Bob", text);
+        Assert.Equal(2, result.Markup.InlineKeyboard.Count());
+        Assert.Collection(
+            buttons.Select(button => button.CallbackData),
+            callbackData => Assert.Equal($"join_session:{firstSessionId}", callbackData),
+            callbackData => Assert.Equal($"cancel_session:{firstSessionId}", callbackData),
+            callbackData => Assert.Equal($"reschedule_session:{firstSessionId}", callbackData),
+            callbackData => Assert.Equal($"join_session:{secondSessionId}", callbackData),
+            callbackData => Assert.Equal($"cancel_session:{secondSessionId}", callbackData),
+            callbackData => Assert.Equal($"reschedule_session:{secondSessionId}", callbackData));
+    }
+}

tests/GmRelay.Bot.Tests/UnitTest1.cs

@@ -1,10 +0,0 @@
-namespace GmRelay.Bot.Tests;
-
-public class UnitTest1
-{
-    [Fact]
-    public void Test1()
-    {
-
-    }
-}

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

@@ -0,0 +1,183 @@
+using GmRelay.Web.Services;
+
+namespace GmRelay.Bot.Tests.Web;
+
+public sealed class AuthorizedSessionServiceTests
+{
+    [Fact]
+    public async Task GetUpcomingSessionsForGmAsync_ReturnsSessions_WhenGroupBelongsToGm()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", gmId)
+            ],
+            sessions:
+            [
+                new(Guid.NewGuid(), groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var sessions = await service.GetUpcomingSessionsForGmAsync(groupId, gmId);
+
+        Assert.NotNull(sessions);
+        Assert.Single(sessions);
+        Assert.Equal("Session A", sessions[0].Title);
+    }
+
+    [Fact]
+    public async Task GetUpcomingSessionsForGmAsync_ReturnsNull_WhenGroupBelongsToAnotherGm()
+    {
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", 2002L)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var sessions = await service.GetUpcomingSessionsForGmAsync(groupId, 1001L);
+
+        Assert.Null(sessions);
+    }
+
+    [Fact]
+    public async Task GetSessionForGmAsync_ReturnsSession_WhenSessionBelongsToOwnedGroup()
+    {
+        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)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var session = await service.GetSessionForGmAsync(sessionId, gmId);
+
+        Assert.NotNull(session);
+        Assert.Equal(sessionId, session.Id);
+    }
+
+    [Fact]
+    public async Task GetSessionForGmAsync_ReturnsNull_WhenSessionBelongsToAnotherGm()
+    {
+        var groupId = Guid.NewGuid();
+        var sessionId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", 2002L)
+            ],
+            sessions:
+            [
+                new(sessionId, groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var session = await service.GetSessionForGmAsync(sessionId, 1001L);
+
+        Assert.Null(session);
+    }
+
+    [Fact]
+    public async Task UpdateSessionForGmAsync_Throws_WhenSessionBelongsToAnotherGm()
+    {
+        var groupId = Guid.NewGuid();
+        var sessionId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", 2002L)
+            ],
+            sessions:
+            [
+                new(sessionId, groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var action = () => service.UpdateSessionForGmAsync(sessionId, 1001L, "Updated", DateTime.UtcNow.AddDays(1), "https://example.test/b");
+
+        await Assert.ThrowsAsync<SessionAccessDeniedException>(action);
+        Assert.False(store.UpdateCalled);
+    }
+
+    [Fact]
+    public async Task UpdateSessionForGmAsync_UpdatesOwnedSession()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var sessionId = Guid.NewGuid();
+        var scheduledAt = DateTime.UtcNow.AddDays(1);
+        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)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.UpdateSessionForGmAsync(sessionId, gmId, "Updated", scheduledAt, "https://example.test/b");
+
+        Assert.True(store.UpdateCalled);
+        Assert.Equal(groupId, store.LastUpdatedGroupId);
+        Assert.Equal(sessionId, store.LastUpdatedSessionId);
+        Assert.Equal("Updated", store.LastUpdatedTitle);
+        Assert.Equal(scheduledAt, store.LastUpdatedScheduledAt);
+        Assert.Equal("https://example.test/b", store.LastUpdatedJoinLink);
+    }
+
+    private sealed class FakeSessionStore(
+        IEnumerable<WebGameGroup>? groups = null,
+        IEnumerable<WebSession>? sessions = null) : ISessionStore
+    {
+        private readonly Dictionary<Guid, WebGameGroup> groupsById = groups?.ToDictionary(group => group.Id) ?? [];
+        private readonly Dictionary<Guid, WebSession> sessionsById = sessions?.ToDictionary(session => session.Id) ?? [];
+
+        public bool UpdateCalled { get; private set; }
+        public Guid? LastUpdatedSessionId { get; private set; }
+        public Guid? LastUpdatedGroupId { get; private set; }
+        public string? LastUpdatedTitle { get; private set; }
+        public DateTime? LastUpdatedScheduledAt { get; private set; }
+        public string? LastUpdatedJoinLink { get; private set; }
+
+        public Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId) =>
+            Task.FromResult(groupsById.Values.Where(group => group.GmTelegramId == gmId).ToList());
+
+        public Task<WebGameGroup?> GetGroupAsync(Guid groupId)
+        {
+            groupsById.TryGetValue(groupId, out var group);
+            return Task.FromResult(group);
+        }
+
+        public Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId) =>
+            Task.FromResult(sessionsById.Values.Where(session => session.GroupId == groupId).ToList());
+
+        public Task<WebSession?> GetSessionAsync(Guid sessionId)
+        {
+            sessionsById.TryGetValue(sessionId, out var session);
+            return Task.FromResult(session);
+        }
+
+        public Task UpdateSessionAsync(Guid sessionId, Guid groupId, string title, DateTime scheduledAt, string joinLink)
+        {
+            UpdateCalled = true;
+            LastUpdatedSessionId = sessionId;
+            LastUpdatedGroupId = groupId;
+            LastUpdatedTitle = title;
+            LastUpdatedScheduledAt = scheduledAt;
+            LastUpdatedJoinLink = joinLink;
+            return Task.CompletedTask;
+        }
+    }
+}

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

@@ -0,0 +1,109 @@
+using System.Security.Cryptography;
+using System.Text;
+using GmRelay.Web.Services;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Primitives;
+
+namespace GmRelay.Bot.Tests.Web;
+
+public sealed class TelegramAuthServiceTests
+{
+    [Fact]
+    public void Verify_ShouldAcceptValidTelegramPayload()
+    {
+        const string botToken = "test-bot-token";
+        var authDate = DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString();
+        var query = CreateQueryCollection(
+            botToken,
+            new Dictionary<string, string>
+            {
+                ["auth_date"] = authDate,
+                ["first_name"] = "Ada",
+                ["id"] = "424242",
+                ["last_name"] = "Lovelace",
+                ["username"] = "ada"
+            });
+        var service = new TelegramAuthService(CreateConfiguration(botToken));
+
+        var verified = service.Verify(query, out var telegramId, out var name);
+
+        Assert.True(verified);
+        Assert.Equal(424242L, telegramId);
+        Assert.Equal("Ada Lovelace", name);
+    }
+
+    [Fact]
+    public void Verify_ShouldRejectTamperedHash()
+    {
+        const string botToken = "test-bot-token";
+        var values = new Dictionary<string, string>
+        {
+            ["auth_date"] = DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString(),
+            ["first_name"] = "Ada",
+            ["id"] = "424242"
+        };
+        var query = CreateQueryCollection(botToken, values);
+        var invalidQuery = new QueryCollection(new Dictionary<string, StringValues>(query.ToDictionary(
+            pair => pair.Key,
+            pair => pair.Value))
+        {
+            ["hash"] = "00"
+        });
+        var service = new TelegramAuthService(CreateConfiguration(botToken));
+
+        var verified = service.Verify(invalidQuery, out _, out _);
+
+        Assert.False(verified);
+    }
+
+    [Fact]
+    public void Verify_ShouldRejectExpiredPayload()
+    {
+        const string botToken = "test-bot-token";
+        var expiredAuthDate = DateTimeOffset.UtcNow.AddDays(-2).ToUnixTimeSeconds().ToString();
+        var query = CreateQueryCollection(
+            botToken,
+            new Dictionary<string, string>
+            {
+                ["auth_date"] = expiredAuthDate,
+                ["first_name"] = "Ada",
+                ["id"] = "424242"
+            });
+        var service = new TelegramAuthService(CreateConfiguration(botToken));
+
+        var verified = service.Verify(query, out _, out _);
+
+        Assert.False(verified);
+    }
+
+    private static IConfiguration CreateConfiguration(string botToken) =>
+        new ConfigurationBuilder()
+            .AddInMemoryCollection(new Dictionary<string, string?>
+            {
+                ["Telegram:BotToken"] = botToken
+            })
+            .Build();
+
+    private static QueryCollection CreateQueryCollection(string botToken, Dictionary<string, string> values)
+    {
+        var hash = ComputeTelegramHash(botToken, values);
+        var queryValues = values.ToDictionary(
+            pair => pair.Key,
+            pair => new StringValues(pair.Value));
+        queryValues["hash"] = new StringValues(hash);
+        return new QueryCollection(queryValues);
+    }
+
+    private static string ComputeTelegramHash(string botToken, IReadOnlyDictionary<string, string> values)
+    {
+        var dataCheckString = string.Join(
+            "\n",
+            values
+                .OrderBy(pair => pair.Key, StringComparer.Ordinal)
+                .Select(pair => $"{pair.Key}={pair.Value}"));
+        var secretKey = SHA256.HashData(Encoding.UTF8.GetBytes(botToken));
+        var hashBytes = HMACSHA256.HashData(secretKey, Encoding.UTF8.GetBytes(dataCheckString));
+        return Convert.ToHexString(hashBytes).ToLowerInvariant();
+    }
+}