refactor(TaskService): 重构任务服务代码结构，拆分文件并优化逻辑

wanshenmean

4 天以前 ba9c1994b95624b88ef606ec00394990d8f2009f

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{"t":0,"agent":"ae21cf2","agent_type":"explore","event":"agent_start","parent_mode":"none"}
{"t":0,"agent":"ae21cf2","agent_type":"explore","event":"agent_stop","success":true,"duration_ms":129137}