"
-- AmmoGroup_1.1.3/data.lua
data:extend{
{
type = "item-group",
name = "ammo",
order = settings.startup["ammogroup-order"].value,
icon = "base/graphics/technology/uranium-ammo.png",
icon_size = 256, icon_mipmaps = 4,
},
}
”
Write in data.lua.

“
-- AmmoGroup_1.1.3/data-final-fixes.lua
local dr = data.raw

-- =============================================================================
-- 1. 强迫症专属：行顺序定义表 (严格按此顺序从上到下分行)
-- =============================================================================
local category_orders = {
["bullet"] = "a", -- 第一行：常规步枪/机枪弹夹
["shotgun-shell"] = "b", -- 第二行：散弹枪弹药
["combat-robot-capsule"] = "c",-- 第三行：战斗机器人胶囊
["capsule"] = "d", -- 第四行：手雷、有毒/减速胶囊
["flamethrower"] = "e", -- 第五行：喷火燃料罐
["rocket"] = "f", -- 第六行：火箭弹
["cannon-shell"] = "g", -- 第七行：坦克炮弹
["artillery-shell"] = "h", -- 第八行：远程火炮大炮弹
["landmine"] = "i", -- 第九行：地雷/防御战术类
["laser-rifle"] = "j", -- 第十行：能量/激光武器弹药
}

-- 辅助函数：动态创建或归类子分类行
local function ensure_subgroup(sg_name, group_name, order_letter)
if not dr["item-subgroup"][sg_name] then
data:extend{{
type = "item-subgroup",
name = sg_name,
group = group_name,
order = order_letter or "z"
}}
else
dr["item-subgroup"][sg_name].group = group_name
if order_letter then
dr["item-subgroup"][sg_name].order = order_letter
end
end
end

-- =============================================================================
-- 2. 终极全量扫描：此时所有模组的物品都已到齐，开始强制分类
-- =============================================================================

-- A. 扫描并分类所有常规及魔改弹药 (type = "ammo")
if dr["ammo"] then
for item_name, item in pairs(dr["ammo"]) do
local category = "other-ammo"
if item.ammo_category then
category = item.ammo_category
elseif item.ammo_type and item.ammo_type.category then
category = item.ammo_type.category
end

    -- 生成该类弹药专属的行名称
    local sg_name = "ammo-row-" .. category
    local order = category_orders[category] or ("y-" .. category)

    -- 确保这行存在于 Ammo 大组中
    ensure_subgroup(sg_name, "ammo", order)
    -- 将这枚子弹强制塞进该行
    item.subgroup = sg_name
end

end

-- B. 兜底保障：把原版的 "ammo" 子分类也顺便搬过来，防止有漏网之鱼
if dr["item-subgroup"]["ammo"] then
dr["item-subgroup"]["ammo"].group = "ammo"
dr["item-subgroup"]["ammo"].order = "a"
end

-- C. 扫描并全量收容投掷物胶囊 (Capsules)
if dr["capsule"] then
local sg_name = "ammo-row-capsule"
ensure_subgroup(sg_name, "ammo", category_orders["capsule"])
for _, item in pairs(dr["capsule"]) do
item.subgroup = sg_name
end
end

-- D. 扫描并全量收容战术地雷 (Landmines)
if dr["land-mine"] then
local sg_name = "ammo-row-landmine"
ensure_subgroup(sg_name, "ammo", category_orders["landmine"])
for _, item in pairs(dr["land-mine"]) do
item.subgroup = sg_name
end
end
”

Write in data-final-fixes.lua

It works great this way.
Note that this code hasn't been updated for the 2.1 API; I simply modified your mod for personal use on version 2.0. I never released it—and couldn't be bothered to—so I'm just sharing the code here for you.