feat(RobotState): 实现 RobotStateRepository，封装 RowVersion 乐观锁

wanshenmean

2 天以前 9fb0938c15bdc4577025e217622df17e8afeff08

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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}