feat(stockChat): 集成 SignalR 实现实时库存更新

wanshenmean

2026-03-30 715cf4c8b9e097aae6c4bcaf00bdd67a763529c4

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{"t":0,"agent":"a1dd170","agent_type":"unknown","event":"agent_stop","success":true}
{"t":0,"agent":"a5ca246","agent_type":"unknown","event":"agent_stop","success":true}