【后端接口】宠物寄养：离线寄养与按时取回接口

-- 宠物寄养：寄存登记
local player = class(actor)
local FEE_PER_DAY = 2000
local function checkInPet(player, petId, days)
    if days < 3 or days > 90 then
        sendmsg(player, 1, 0, "寄养时长限 3 到 90 天。")
        return
    end
    local fee = FEE_PER_DAY * days
    if not checkitemw(player, "金币袋", math.ceil(fee / 10000)) then
        sendmsg(player, 1, 0, "保管费不足：共需 " .. fee .. " 金币。")
        return
    end
    takeitem(player, "金币袋", math.ceil(fee / 10000))
    setplayvar(player, "HUMAN", "Kennel_" .. petId, os.date("%Y%m%d") .. "|" .. days, true)
    sendmsg(player, 1, 0, petId .. " 已入住寄养棚 " .. days .. " 天，资质锁定。")
end

-- 宠物寄养：取回与超期
local player = class(actor)
local function checkOutPet(player, petId)
    local record = getplayvar(player, "HUMAN", "Kennel_" .. petId) or ""
    local inDate, days = string.match(record, "(%d+)|(%d+)")
    if inDate == nil then
        sendmsg(player, 1, 0, "该宠物不在寄养棚。")
        return
    end
    local elapsed = math.floor((os.time() - stampOf(inDate)) / 86400)
    local overdue = elapsed - tonumber(days)
    if overdue > 0 then
        sendmsg(player, 1, 0, "超期 " .. overdue .. " 天，补缴保管费后即可取回。")
        return
    end
    setplayvar(player, "HUMAN", "Kennel_" .. petId, "", true)
    sendmsg(player, 1, 0, "取回成功，宠物资质完好如初。")
end