Xuehao Xu 9b17bef630
feat(channel): add QQ WebSocket channel (#6081)
* feat: add QQ WebSocket channel

* fix: address QQ channel review feedback

* docs: trim inherited agent guidance below CI limit

* fix: align QQ gateway and passive reply limits with protocol

* docs: keep merged channel guidance within CI budget
2026-10-03 14:32:44 +08:00
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