Добавлен метод удаления сообщения

BotPages.Telegram/TelegramAdapter.cs

@@ -137,6 +137,18 @@ public sealed class TelegramAdapter : IMessengerAdapterSetup
         return null;
     }
 
+    /// <inheritdoc/>
+    public Task DeleteAsync(string chatId, string messageId, CancellationToken ct = default)
+    {
+        if (_client is null)
+        {
+            _logger.Log(LogLevel.Critical, $"{MessengerType} client is not initialized.");
+            return null;
+        }
+
+        return _client.DeleteMessage(chatId, Convert.ToInt32(messageId), ct);
+    }
+
     // --- Helpers ---
 
     private InlineKeyboardMarkup? BuildInlineMarkup(IEnumerable<IEnumerable<InlineButton>>? inline)