add memory

Services/BotService.cs

@@ -103,7 +103,10 @@ public class BotService
             return;
 
         var botId = _client.CurrentUser.Id;
+        var botName = _client.CurrentUser.Username;
         var hasMention = message.MentionedUsers.Any(u => u.Id == botId);
+        var hasTextMention = message.Content.TrimStart()
+            .StartsWith($"@{botName}", StringComparison.OrdinalIgnoreCase);
         var isReplyToBot = false;
 
         if (message.Reference?.MessageId.IsSpecified == true)
@@ -121,10 +124,16 @@ public class BotService
             }
         }
 
-        if (!hasMention && !isReplyToBot)
+        if (!hasMention && !isReplyToBot && !hasTextMention)
             return;
 
-        var prompt = hasMention ? RemoveBotMentions(message.Content, botId) : message.Content.Trim();
+        string prompt;
+        if (hasMention)
+            prompt = RemoveBotMentions(message.Content, botId);
+        else if (hasTextMention)
+            prompt = RemoveBotName(message.Content, botName);
+        else
+            prompt = message.Content.Trim();
 
         if (string.IsNullOrWhiteSpace(prompt))
         {
@@ -136,7 +145,7 @@ public class BotService
         {
             var accumulated = string.Empty;
 
-            await foreach (var text in _llmService.SendMessageAsync(message.Channel.Id, message.Author.Username, prompt))
+            await foreach (var text in _llmService.SendMessageAsync(message.Channel.Id, message.Author.Id, message.Author.Username, prompt))
             {
                 accumulated = text;
             }
@@ -190,6 +199,17 @@ public class BotService
             .Trim();
     }
 
+    private static string RemoveBotName(string content, string botName)
+    {
+        if (string.IsNullOrWhiteSpace(content))
+            return string.Empty;
+
+        return System.Text.RegularExpressions.Regex.Replace(
+            content,
+            $@"^\s*@{System.Text.RegularExpressions.Regex.Escape(botName)}\s*",
+            "", System.Text.RegularExpressions.RegexOptions.IgnoreCase).Trim();
+    }
+
     private static Task LogAsync(LogMessage message)
     {
         Console.WriteLine($"[{message.Severity}] {message.Source}: {message.Message}");