fix(bot): skip join-link reminders without links

Prevent offline sessions with empty join links from entering the 5-minute join-link notification flow, omit blank link lines from direct reminders, and add offline persistence/reminder regression coverage.

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

@@ -405,19 +405,8 @@ public sealed class TelegramPlatformMessenger(
 
                 Ответьте кнопкой в групповом сообщении расписания.
                 """,
-            PlatformDirectSessionNotificationKind.OneHourReminder => $"""
-                ⏰ <b>Игра начнётся примерно через 1 час</b>
-
-                📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>
-                📅 {notification.ScheduledAt.FormatMoscow()} (МСК)
-                🔗 {System.Net.WebUtility.HtmlEncode(notification.JoinLink ?? string.Empty)}
-                """,
-            PlatformDirectSessionNotificationKind.JoinLink => $"""
-                🎮 <b>Игра начинается через 5 минут</b>
-
-                📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>
-                🔗 {System.Net.WebUtility.HtmlEncode(notification.JoinLink ?? string.Empty)}
-                """,
+            PlatformDirectSessionNotificationKind.OneHourReminder => BuildOneHourReminderDirectText(notification),
+            PlatformDirectSessionNotificationKind.JoinLink => BuildJoinLinkDirectText(notification),
             PlatformDirectSessionNotificationKind.RescheduleApproved => $"""
                 ✅ <b>Сессия перенесена по итогам голосования</b>
 
@@ -434,6 +423,39 @@ public sealed class TelegramPlatformMessenger(
             _ => BuildFallbackDirectText(notification)
         };
 
+    private static string BuildOneHourReminderDirectText(PlatformDirectSessionNotification notification)
+    {
+        var lines = new List<string>
+        {
+            "⏰ <b>Игра начнётся примерно через 1 час</b>",
+            string.Empty,
+            $"📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>",
+            $"📅 {notification.ScheduledAt.FormatMoscow()} (МСК)"
+        };
+        AppendJoinLinkLine(lines, notification.JoinLink);
+        return string.Join("\n", lines);
+    }
+
+    private static string BuildJoinLinkDirectText(PlatformDirectSessionNotification notification)
+    {
+        var lines = new List<string>
+        {
+            "🎮 <b>Игра начинается через 5 минут</b>",
+            string.Empty,
+            $"📌 <b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>"
+        };
+        AppendJoinLinkLine(lines, notification.JoinLink);
+        return string.Join("\n", lines);
+    }
+
+    private static void AppendJoinLinkLine(List<string> lines, string? joinLink)
+    {
+        if (!string.IsNullOrWhiteSpace(joinLink))
+        {
+            lines.Add($"🔗 {System.Net.WebUtility.HtmlEncode(joinLink)}");
+        }
+    }
+
     private static string BuildFallbackDirectText(PlatformDirectSessionNotification notification) =>
         $"<b>{System.Net.WebUtility.HtmlEncode(notification.Title)}</b>\n{notification.ScheduledAt.FormatMoscow()} (МСК)";
 

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

@@ -57,6 +57,7 @@ public sealed class SendJoinLinkHandler(
             JOIN game_groups g ON g.id = s.group_id
             WHERE s.id = @SessionId
               AND s.status = @Confirmed
+              AND btrim(s.join_link) <> ''
               AND (
                     (g.platform = 'Telegram' AND s.link_message_id IS NULL)
                     OR (

src/GmRelay.Shared/Infrastructure/Scheduling/ISessionTriggerStore.cs

@@ -81,6 +81,7 @@ public sealed class DbSessionTriggerStore(
             JOIN game_groups g ON g.id = s.group_id
             WHERE g.platform = @Platform
               AND s.status = @Confirmed
+              AND btrim(s.join_link) <> ''
               AND s.scheduled_at - @LeadTime <= @Now
               AND (
                     (g.platform = 'Telegram' AND s.link_message_id IS NULL)

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

@@ -144,4 +144,49 @@ public sealed class CreateSessionHandlerIntegrationTests(CreateSessionHandlerPos
         Assert.Equal("Online room notes", reader.GetString(2));
         Assert.False(await reader.ReadAsync());
     }
+
+    [Fact]
+    public async Task HandleAsync_OfflineSession_PersistsFormatAndLocationAddress()
+    {
+        var connectionString = await fixture.CreateMigratedDatabaseAsync();
+        await using var dataSource = NpgsqlDataSource.Create(connectionString);
+        var sut = new CreateSessionHandler(dataSource);
+
+        var result = await sut.HandleAsync(
+            new CreateSessionCommand(
+                new PlatformUser(PlatformKind.Telegram, "333333333", "Offline GM", "offline_gm"),
+                new PlatformGroup(PlatformKind.Telegram, "444444444", "Offline Group"),
+                "Offline Adventure",
+                string.Empty,
+                [DateTimeOffset.UtcNow.AddDays(1)],
+                4,
+                null,
+                GameSystem.Dnd5e,
+                "Offline integration regression test",
+                "Offline",
+                240,
+                true,
+                "Москва, ул. Кубиков, 12"),
+            CancellationToken.None);
+
+        Assert.True(result.Success, result.ErrorMessage);
+        Assert.NotNull(result.BatchId);
+
+        await using var connection = await dataSource.OpenConnectionAsync();
+        await using var command = new NpgsqlCommand(
+            """
+            SELECT join_link, format, location_address
+            FROM sessions
+            WHERE batch_id = @batch_id
+            """,
+            connection);
+        command.Parameters.AddWithValue("batch_id", result.BatchId.Value);
+
+        await using var reader = await command.ExecuteReaderAsync();
+        Assert.True(await reader.ReadAsync());
+        Assert.Equal(string.Empty, reader.GetString(0));
+        Assert.Equal("Offline", reader.GetString(1));
+        Assert.Equal("Москва, ул. Кубиков, 12", reader.GetString(2));
+        Assert.False(await reader.ReadAsync());
+    }
 }

tests/GmRelay.Bot.Tests/Infrastructure/Scheduling/DbSessionTriggerStoreTests.cs

@@ -0,0 +1,68 @@
+using GmRelay.Bot.Tests.Features.Sessions.CreateSession;
+using GmRelay.Shared.Domain;
+using GmRelay.Shared.Infrastructure.Scheduling;
+using GmRelay.Shared.Platform;
+using Npgsql;
+
+namespace GmRelay.Bot.Tests.Infrastructure.Scheduling;
+
+[Collection(CreateSessionHandlerPostgresCollection.Name)]
+public sealed class DbSessionTriggerStoreTests(CreateSessionHandlerPostgresFixture fixture)
+{
+    [Fact]
+    public async Task GetSessionsNeedingJoinLinkAsync_IgnoresConfirmedSessionsWithoutJoinLink()
+    {
+        var connectionString = await fixture.CreateMigratedDatabaseAsync();
+        await using var dataSource = NpgsqlDataSource.Create(connectionString);
+        await using var connection = await dataSource.OpenConnectionAsync();
+
+        var groupId = await InsertTelegramGroupAsync(connection);
+        var dueAt = DateTimeOffset.UtcNow.AddMinutes(4).UtcDateTime;
+        var onlineSessionId = await InsertSessionAsync(connection, groupId, dueAt, "https://vtt.example/game", "Online");
+        var offlineSessionId = await InsertSessionAsync(connection, groupId, dueAt, string.Empty, "Offline");
+
+        var sut = new DbSessionTriggerStore(dataSource, new PlatformSchedulerOptions(PlatformKind.Telegram));
+
+        var result = await sut.GetSessionsNeedingJoinLinkAsync(DateTimeOffset.UtcNow, CancellationToken.None);
+
+        Assert.Contains(onlineSessionId, result);
+        Assert.DoesNotContain(offlineSessionId, result);
+    }
+
+    private static async Task<Guid> InsertTelegramGroupAsync(NpgsqlConnection connection)
+    {
+        await using var command = new NpgsqlCommand(
+            """
+            INSERT INTO game_groups (name, platform, external_group_id)
+            VALUES ('Trigger Test Group', 'Telegram', @ExternalGroupId)
+            RETURNING id
+            """,
+            connection);
+        command.Parameters.AddWithValue("ExternalGroupId", Guid.NewGuid().ToString("N"));
+
+        return (Guid)(await command.ExecuteScalarAsync() ?? throw new InvalidOperationException("Group insert failed."));
+    }
+
+    private static async Task<Guid> InsertSessionAsync(
+        NpgsqlConnection connection,
+        Guid groupId,
+        DateTime scheduledAt,
+        string joinLink,
+        string format)
+    {
+        await using var command = new NpgsqlCommand(
+            """
+            INSERT INTO sessions (group_id, title, join_link, scheduled_at, status, format)
+            VALUES (@GroupId, 'Trigger Test Session', @JoinLink, @ScheduledAt, @Status, @Format)
+            RETURNING id
+            """,
+            connection);
+        command.Parameters.AddWithValue("GroupId", groupId);
+        command.Parameters.AddWithValue("JoinLink", joinLink);
+        command.Parameters.AddWithValue("ScheduledAt", scheduledAt);
+        command.Parameters.AddWithValue("Status", SessionStatus.Confirmed);
+        command.Parameters.AddWithValue("Format", format);
+
+        return (Guid)(await command.ExecuteScalarAsync() ?? throw new InvalidOperationException("Session insert failed."));
+    }
+}

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

@@ -2,6 +2,7 @@ using GmRelay.Bot.Infrastructure.Telegram;
 using GmRelay.Shared.Platform;
 using GmRelay.Shared.Rendering;
 using Microsoft.Extensions.Logging.Abstractions;
+using System.Reflection;
 
 namespace GmRelay.Bot.Tests.Infrastructure.Telegram;
 
@@ -36,9 +37,35 @@ public sealed class TelegramPlatformMessengerTests
         Assert.Contains("Existing schedule message reference must match the schedule group.", exception.Message);
     }
 
+    [Fact]
+    public void BuildDirectNotificationText_OneHourReminderWithoutJoinLink_ShouldNotRenderBlankLinkLine()
+    {
+        var notification = new PlatformDirectSessionNotification(
+            PlatformDirectSessionNotificationKind.OneHourReminder,
+            new PlatformUser(PlatformKind.Telegram, "123", "Player", "player"),
+            Guid.NewGuid(),
+            "Offline Game",
+            DateTime.UtcNow,
+            JoinLink: string.Empty);
+
+        var text = InvokeBuildDirectNotificationText(notification);
+
+        Assert.DoesNotContain("🔗", text);
+    }
+
     private static TelegramPlatformMessenger CreateMessenger() =>
         new(null!, NullLogger<TelegramPlatformMessenger>.Instance);
 
+    private static string InvokeBuildDirectNotificationText(PlatformDirectSessionNotification notification)
+    {
+        var method = typeof(TelegramPlatformMessenger).GetMethod(
+            "BuildDirectNotificationText",
+            BindingFlags.NonPublic | BindingFlags.Static);
+
+        Assert.NotNull(method);
+        return Assert.IsType<string>(method.Invoke(null, new object[] { notification }));
+    }
+
     private static SessionBatchViewModel CreateView() =>
         new("Test batch", []);
 }