【引擎触发】装备强化：武器升级的矿石消耗与成功率阶梯

local UPGRADE_RATE = { [1] = 100, [2] = 90, [3] = 80, [4] = 70, [5] = 60, [6] = 50, [7] = 30 }
function QF.UpgradeWeapon(plr, weaponSlot)
    local weapon = plr.bag[weaponSlot]
    local lv = weapon.upgrade or 0
    if lv >= 7 then return false, "已到强化上限" end
    if not plr:TakeOre(needPurity(lv)) then
        return false, "矿石纯度不足"
    end
    local rate = UPGRADE_RATE[lv + 1]
    if math.random(1, 100) <= rate then
        weapon.upgrade = lv + 1
        weapon:RecalcAttack()
        plr:SendMsg("强化成功！武器升至 " .. (lv + 1) .. " 级")
        QF_Broadcast(plr.name .. " 的武器强化到 " .. (lv + 1) .. " 级")
    else
        weapon:Break()
        plr:SendMsg("强化失败，武器碎裂...")
    end
    return true
end

function weapon:Break()
    if self:HasCharm("护身符") then
        self:ConsumeCharm()
        self.upgrade = math.max(self.upgrade - 1, 0)
        plr:SendMsg("护身符碎裂，武器降级保留")
        return
    end
    plr:RemoveWeapon(self)
end