Change cloud task status

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{
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 "dataSecret":"API cloud communication secret from backend", // config.toml → appkey; default test123
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 "taskId":"1",// task ID created in cloud control
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  "status":"0",// 1 stop local, 2 stop remote, 0 start
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  "addDevices":"001,002,003",// devices to add
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 "removeDevices":"007,009",// devices to remove
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 // addParamEx fields:
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 // key = parameter name
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 // type = 1 text, 2 radio, 3 checkbox
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 // value = string for text/radio; JSON array for checkbox
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 // options = candidates; ignore for text; JSON array for radio/checkbox
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 "addParamEx":[
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 {
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 "key":"我是文本",
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 "type":"1",
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 "value":"我是文本的值"
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 },
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 {
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 "key":"我是单选框",
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 "type":"2",
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 "value":"2222",
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 "options":["我是选中","2222"]
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 },
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 {
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 "key":"我是多选框",
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 "type":"3",
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 "value":["111","222"],
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 "options":["111","2222","333"]
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 }
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 ],
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 "removeParam":["ke1"]
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}

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title: Auto-run after order flow
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participant Customer
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participant OrderSystem
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participant CloudControl
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participant Device
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Customer->OrderSystem: Place order and pay
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OrderSystem->CloudControl: Call (/api/changeTask) to start a task,\nadd devices and parameters
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CloudControl->CloudControl: Update task status,\nparameters, devices
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CloudControl->Device: Dispatch task to device
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Device->Device: Loop script
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Device->CloudControl: Call (/api/changeTask) when done\nto remove itself from the task devices