display name --> handle

bot.py

@@ -163,7 +163,7 @@ def resolve_mentions(content: str, guild) -> str:  # thank you claude
         return content
     def replace(m):
         member = guild.get_member(int(m.group(1)))
-        return f"@{member.display_name}" if member else m.group(0)
+        return f"@{member.name}" if member else m.group(0)
     return re.sub(r'<@!?(\d+)>', replace, content)
 
 def is_member_in_server(member: discord.Member) -> bool:
@@ -379,7 +379,7 @@ async def on_message(message):
 
     mentioned = client.user.mentioned_in(message)
 
-    # if it replied to bot, treat it as a mention automatically
+    #if it replied to bot, treat it as a mention automatically
     if replied_to_bot:
         mentioned = True