双人复核：大额支取的双人确认

local function withdraw(actor, cnt)
    takeitem(actor, "金条", cnt, 0, "仓库支取")   -- 单人可搬空
end

local PENDING = {}
local function withdraw(actor, cnt)
    if cnt > 500 then
        PENDING[os.time()] = {who = actor, cnt = cnt}
        sendcentermsg("大额支取待第二官员确认")
        return
    end
    giveitem(actor, "金条", cnt, 0, "仓库支取")
end
local function confirm(actor, key)
    local p = PENDING[key]
    if p then
        PENDING[key] = nil
        giveitem(getplayerbyname(p.who), "金条", p.cnt,
            0, "复核后支取")
    end
end