【后端接口】行会仓库整理：物品归类与批量清理的接口

-- 行会仓库整理：价值分档
local player = class(actor)
local HIGH_VALUE = {trade = 1, gear = 1}
local LOW_VALUE = {old_event = 1, junk = 1}
local function classifyItem(itemTag)
    if HIGH_VALUE[itemTag] then return 1 end
    if LOW_VALUE[itemTag] then return 3 end
    return 2
end
local function sortWarehouse(player)
    local warehouse = getplayvar(player, "GUILD", "WarehouseItems") or ""
    local tiers = {{},{},{}}
    for item in string.gmatch(warehouse, "[;]+") do
        local tag, name = string.match(item, "([:]+):(.+)")
        if tag and name then
            local tier = classifyItem(tag)
            tiers[tier][#tiers[tier] + 1] = name
        end
    end
    setplayvar(player, "GUILD", "WhSorted", 1, true)
    sendmsg(player, 1, 0, "仓库已按价值分三档整理。")
end

-- 批量清理：冗余识别
local player = class(actor)
local function cleanStale(player)
    local stale = tonumber(getsysvar("WhStaleCnt") or 0)
    if stale < 20 then
        sendmsg(player, 1, 0, "低价值冗余不足 20 件，暂不需清理。")
        return
    end
    setsysvarex("WhStaleCnt", 0, true)
    giveitem(player, "金币袋", math.floor(stale / 10))
    sendmsg(player, 1, 0, "清理 " .. stale .. " 件冗余，兑换 " .. math.floor(stale / 10) .. " 个金币袋。")
end