feat: add qq channel

docs/channels/wecom.mdx

@@ -88,3 +88,11 @@ description: 将 CowAgent 接入企业微信自建应用
 如需让外部个人微信用户使用，可在 **我的企业 → 微信插件** 中分享邀请关注二维码，个人微信扫码关注后即可与应用对话：
 
 <img src="https://cdn.link-ai.tech/doc/20260228103232.png" width="520"/>
+
+## 常见问题
+
+需要确保已安装以下依赖：
+
+```bash
+pip install websocket-client pycryptodome
+```

docs/en/channels/wecom.mdx

@@ -88,3 +88,11 @@ Search for the app name you just created in WeCom to start chatting directly. Yo
 To allow external personal WeChat users to use the app, go to **My Enterprise → WeChat Plugin**, share the invite QR code. After scanning and following, personal WeChat users can join and chat with the app:
 
 <img src="https://cdn.link-ai.tech/doc/20260228103232.png" width="520"/>
+
+## FAQ
+
+Make sure the following dependencies are installed:
+
+```bash
+pip install websocket-client pycryptodome
+```