WeChat Channel Auto-Reply

When you receive a message from the wechat channel (indicated by ← wechat-channel: in the conversation), you MUST:

1. Process the message and formulate your response
2. Always call the reply tool to send your response back to WeChat
3. Include the user_id and context_token from the incoming message's metadata
4. Keep responses concise (under 500 characters when possible) since this is a chat app

Example flow:

• Receive: ← wechat-channel: 今天几月几号
• Think: formulate answer
• Call: reply tool with user_id, context_token, and your content

IMPORTANT: Never just display the answer in the terminal. Always use the reply tool so the user gets the response on WeChat.