【运维发布】备用线路：主线路故障的自动切换演练

-- 备用线路：切换判定
local player = class(actor)
local failCnt = 0
local function onProbeResult(player, lost)
    if lost then
        failCnt = failCnt + 1
    else
        failCnt = 0
    end
    if failCnt >= 3 and getsysvar("LineMode") ~= "backup" then
        setsysvarex("LineMode", "backup", true)
        gmexecute(player, "@SwitchLine", "backup")
        sendcentermsg(player, 255, 0, "主线路故障已切换备用线路，掉线玩家请重新登录。", 0, 10)
    end
end

-- 切回恢复：观察与回切
local player = class(actor)
local stableMin = 0
local function onBackupProbe(player, healthy)
    if getsysvar("LineMode") ~= "backup" then return end
    stableMin = healthy and stableMin + 1 or 0
    if stableMin >= 30 then
        sendmsg(player, 1, 0, "主线路已稳定 30 分钟，回切将安排在低峰窗口执行。")
        setsysvarex("SwitchReady", 1, true)
    end
end