【运维发布】多服分批发布：批次编排与进度看板

local BATCHES = {
    { "s1", "s2", "s3", "s4", "s5" },
    { "s6", "s7", "s8", "s9", "s10" },
    { "s11", "s12", "s13", "s14", "s15" },
}
local function runBatch(idx)
    for _, srv in ipairs(BATCHES[idx]) do
        setsysvarex("DEPLOY_" .. srv, os.date("%H%M"), 1)
    end
    setsysvarex("DEPLOY_BATCH_NOW", idx, 1)
end

local function canGoNext(failRate)
    if failRate > 0.02 then
        setsysvarex("DEPLOY_PAUSED", 1, 1)
        sendcentermsg("发版已暂停，等待值班人员确认")
        return false
    end
    return true
end