【框架设计】天赋树：三系天赋的加点与洗点消耗

---加点：talent 系列与层级
function Talent.learn(actor, series, layer)
    if actor:GetLevel() < 50 then
        sendmsg(actor, 1, "达到 50 级后开启天赋")
        return false
    end
    local key = "Talent_" .. series .. "_" .. layer
    local cur = tonumber(getplayvar(actor, 2, key)) or 0
    if cur >= 3 then
        sendmsg(actor, 1, "该层天赋已满级")
        return false
    end
    if Talent.count(actor, series) < layer * 3 then
        sendmsg(actor, 1, "前置层数不足")
        return false
    end
    setplayvar(actor, "HUMAN", key, cur + 1, 1)
    Talent.apply(actor, series, layer)
    return true
end

---天赋生效：属性加成与技能强化
function Talent.apply(actor, series, layer)
    local pt = Talent.totalOf(actor, series)
    if series == "atk" then
        addbuff(actor, 20010, 99999, 1, actor, { [1] = pt * 15 })
    elseif series == "def" then
        addbuff(actor, 20011, 99999, 1, actor, { [4] = pt * 12 })
    end
    sendmsg(actor, 1, "天赋生效：攻击强化 " .. pt * 15 .. " 点")
end

---洗点：返还 80% 天赋石
function Talent.reset(actor, series)
    local pts = Talent.totalOf(actor, series)
    if pts <= 0 then return false end
    Talent.clear(actor, series)
    giveitem(actor, "天赋石", math.floor(pts * 0.8))
    sendmsg(actor, 1, "洗点完成，返还 " .. math.floor(pts * 0.8) .. " 枚天赋石")
    return true
end