[Bug]: Bot responds to commands addressed to other bots in group chats

[liuh886]

What happened?

In group chats with multiple bots, ductor incorrectly responds to commands even when they are explicitly addressed to another bot (e.g., /model@other_bot). This violates the Telegram convention where /cmd@botname should only be handled by the specified bot.

The problem seems the ductor_bot/bot/middleware.py, which ignore @ and send command to all bots. My suggests is limit to /command but except for /command@bot1

Steps to Reproduce

1. in group chat, and set the bot to admin
2. /model@bot1
3. all bot response /model command

Expected Behavior

The command handling logic should be updated to explicitly ignore any command that contains a mention suffix
(@botName) if that botname does not match the bot's name, regardless of the group_mention_only setting.

In other words, /model@bot1 should be treated differently with the /model, that all bots response.

Operating System

Windows

Environment

Docker

Which LLM provider?

Gemini

ductor version

0.12.0

/diagnose output

Relevant log output

LLM self-diagnosis (optional)

No response

Additional context

No response

Before submitting

• I have searched existing issues for duplicates.
• I am running the latest version.