refactor(#22): разделить SessionBatchRenderer на neutral view и Telegram renderer

- SessionBatchViewBuilder в Shared собирает нейтральную view model
- TelegramSessionBatchRenderer в Bot/Web рендерит HTML + InlineKeyboardMarkup
- DiscordSessionBatchRenderer заглушка подготовлена
- BatchMessageEditor перенесён из Shared в Bot/Web
- Удалён SessionBatchRenderer, убран Telegram.Bot из Shared.csproj
- Обновлены все вызовы (7 handler-ов + Web SessionService + smoke tests)
- Новые тесты на builder и Telegram renderer

src/GmRelay.Web/Services/BatchMessageEditor.cs

@@ -0,0 +1,51 @@
+using Telegram.Bot;
+using Telegram.Bot.Types.Enums;
+using Telegram.Bot.Types.ReplyMarkups;
+
+namespace GmRelay.Web.Services;
+
+/// <summary>
+/// Handles editing batch messages that may be either text or photo messages.
+/// When the batch was created with SendPhoto (image + caption), we need
+/// EditMessageCaption instead of EditMessageText.
+/// </summary>
+public static class BatchMessageEditor
+{
+    /// <summary>
+    /// Edits a batch message, automatically detecting whether it is a text or photo message.
+    /// Tries EditMessageText first; on failure falls back to EditMessageCaption.
+    /// </summary>
+    public static async Task EditBatchMessageAsync(
+        ITelegramBotClient bot,
+        long chatId,
+        int messageId,
+        string text,
+        InlineKeyboardMarkup? replyMarkup,
+        CancellationToken ct = default)
+    {
+        try
+        {
+            await bot.EditMessageText(
+                chatId: chatId,
+                messageId: messageId,
+                text: text,
+                parseMode: ParseMode.Html,
+                replyMarkup: replyMarkup,
+                cancellationToken: ct);
+        }
+        catch (Telegram.Bot.Exceptions.ApiRequestException ex)
+            when (ex.Message.Contains("there is no text in the message", StringComparison.OrdinalIgnoreCase))
+        {
+            // The batch message is a photo — use EditMessageCaption instead.
+            // Caption is limited to 1024 chars; if text exceeds that, truncate gracefully.
+            var caption = text.Length <= 1024 ? text : text[..1021] + "...";
+            await bot.EditMessageCaption(
+                chatId: chatId,
+                messageId: messageId,
+                caption: caption,
+                parseMode: ParseMode.Html,
+                replyMarkup: replyMarkup,
+                cancellationToken: ct);
+        }
+    }
+}

src/GmRelay.Web/Services/SessionService.cs

@@ -3,6 +3,7 @@ using GmRelay.Shared.Domain;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
+using GmRelay.Web.Services;
 
 namespace GmRelay.Web.Services;
 
@@ -883,7 +884,8 @@ public sealed class SessionService(
 
         await transaction.CommitAsync();
 
-        var renderResult = SessionBatchRenderer.Render(batchTitle, renderedSessions, Array.Empty<ParticipantBatchDto>());
+        var view = SessionBatchViewBuilder.Build(batchTitle, renderedSessions, Array.Empty<ParticipantBatchDto>());
+        var renderResult = TelegramSessionBatchRenderer.Render(view);
         var batchMessage = await bot.SendMessage(
             chatId: chatId,
             messageThreadId: threadId,
@@ -1091,7 +1093,8 @@ public sealed class SessionService(
 
         await transaction.CommitAsync();
 
-        var renderResult = SessionBatchRenderer.Render(template.Title, renderedSessions, Array.Empty<ParticipantBatchDto>());
+        var view = SessionBatchViewBuilder.Build(template.Title, renderedSessions, Array.Empty<ParticipantBatchDto>());
+        var renderResult = TelegramSessionBatchRenderer.Render(view);
         var batchMessage = await bot.SendMessage(
             chatId: group.TelegramChatId,
             text: renderResult.Text,
@@ -1198,7 +1201,8 @@ public sealed class SessionService(
                   ORDER BY sp.registration_status ASC, sp.created_at ASC, sp.responded_at ASC, p.created_at ASC",
                 new { BatchId = batchId })).ToList();
 
-            var renderResult = SessionBatchRenderer.Render(title, sessions, participants);
+            var view = SessionBatchViewBuilder.Build(title, sessions, participants);
+            var renderResult = TelegramSessionBatchRenderer.Render(view);
 
             await BatchMessageEditor.EditBatchMessageAsync(
                 bot,

src/GmRelay.Web/Services/TelegramSessionBatchRenderer.cs

@@ -0,0 +1,56 @@
+using GmRelay.Shared.Rendering;
+using Telegram.Bot.Types.ReplyMarkups;
+
+namespace GmRelay.Web.Services;
+
+public static class TelegramSessionBatchRenderer
+{
+    public static (string Text, InlineKeyboardMarkup Markup) Render(SessionBatchViewModel view)
+    {
+        var messageText = $"🎲 <b>Новые игры:</b> {System.Net.WebUtility.HtmlEncode(view.Title)}\n\n" +
+                          $"<b>Расписание:</b>\n\n";
+
+        var buttons = new List<InlineKeyboardButton[]>();
+
+        foreach (var session in view.Sessions)
+        {
+            messageText += $"📅 <b>{session.ScheduledAt.FormatMoscow()}</b>\n";
+            messageText += session.MaxPlayers.HasValue
+                ? $"👥 Места: {session.ActivePlayerCount}/{session.MaxPlayers.Value}\n"
+                : $"👥 Игроки ({session.ActivePlayerCount}):\n";
+
+            if (session.ActivePlayers.Count > 0)
+            {
+                messageText += string.Join("\n", session.ActivePlayers.Select(p =>
+                    $"  👤 {(p.TelegramUsername != null ? "@" + p.TelegramUsername : p.DisplayName)}")) + "\n";
+            }
+            else
+            {
+                messageText += "  <i>Пока никто не записался</i>\n";
+            }
+
+            if (session.WaitlistedPlayers.Count > 0)
+            {
+                messageText += $"⏳ Лист ожидания ({session.WaitlistedPlayers.Count}):\n";
+                messageText += string.Join("\n", session.WaitlistedPlayers.Select(p =>
+                    $"  ⏱ {(p.TelegramUsername != null ? "@" + p.TelegramUsername : p.DisplayName)}")) + "\n";
+            }
+
+            if (GmRelay.Shared.Domain.SessionStatus.IsCancelled(session.Status))
+            {
+                messageText += "❌ <i>Сессия отменена</i>\n\n";
+            }
+            else
+            {
+                messageText += "\n";
+                var actionRow = session.AvailableActions
+                    .Select(a => InlineKeyboardButton.WithCallbackData(a.Label, $"{a.ActionKey}:{a.SessionId}"))
+                    .ToArray();
+                if (actionRow.Length > 0)
+                    buttons.Add(actionRow);
+            }
+        }
+
+        return (messageText, new InlineKeyboardMarkup(buttons));
+    }
+}