docs: add category-sort implementation plan (single categoryId, dual-path filter)

2026-09-01 19:26:50 +08:00
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 # 分类排序（category-tree-sort）实施计划
 > **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
 **Goal:** `GET /public/goods` 默认排序变为「国家 → 二级分类 → 三级分类（款）→ good_priority」，`GET /public/categories` 内容源切换为新树（国家根→二级→三级款），支持 1/2/3 级任意筛选组合，接口输入输出 DTO 结构完全不变。
 **Architecture:** `categories` 新增 `sort_order`（二/三级顺序）与 `country_id`（树根关联国家，一级顺序复用 `countries.sort_order`）。`getGoods` 内存中按四层键排序（量级 295，分组/分页本就内存执行）；`categoryId` 仍是单个 id（DTO 不动）+ 双通道过滤（新树走 `origin_goods.sds_category_id`，老树回退 `goods.category_id`）。数据一次性回填脚本解析 `排序表.md`。
 **Tech Stack:** NestJS + Prisma + PostgreSQL + Jest（真实库集成测试）
 **已确认的决策：**
 1. **前端调用形态（真实 URL 已确认）**：无论选中哪一层，`categoryId` 永远只传**一个**节点 id（DTO 完全不动，无逗号多 id），可选伴随 `countryId`。goods 全挂老树，老树节点天然跨国家：
   - 只选老树节点：`?categoryId=659`（女士服装，跨国家）→ 按 ①国家→②新树二级→③新树款→④priority 排（"美国的女士T恤全排完到下个国家"）
   - 选到老树叶子：`?categoryId=666`（女士/裤装，跨国家）→ 同上
   - 国家 + 分类：`?countryId=49&categoryId=658` → 该国内按 ②③④
   - 只选国家：`?countryId=49` → 同上
   - 什么都不选 → 全局 ①②③④
   （以上全部由"绝对排序键 + 子集过滤"自然满足，无特殊分支逻辑）
 2. 款内顺序复用现有 `good_priority`（只需保证三级款之间顺序正确）
 3. 「中东」改为「沙特」写入 countries；防晒衣(good_id=137) 不处理（排序沉底）
 4. `/public/categories` 切换为新树内容源（结构不变）；空国家/空二级（productCount=0）不返回，与旧行为、`getCountries` 口径一致。切换后前端将传新树 id（某国的二级/款），`categoryId` 过滤走双通道兼容两种 id
 **硬性约束：**
 - 所有 public 接口入参、出参 DTO 字段**一个都不能变**，只改内部逻辑
 - 已有测试必须全部通过，不允许跳过
 - 共享开发库（deploy-v2-postgres-1）：禁止 reset；迁移用「手写 SQL + db execute + migrate resolve」，先跑 `prisma migrate status`
 - 回滚保障：`backups/inkreach_snapshot_20260901_185233.dump`（全库快照已做）；代码回滚 = 删 feature 分支
 **执行环境（宿主机无 node，统一用容器跑）：**
 ```bash
 # 测试 / prisma 命令统一模板（挂载源码 + 加入 postgres 网络）
 docker run --rm --network deploy-v2_default \
  -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' \
  -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine npx <命令>
 ```
 **排序键定义（getGoods DEFAULT）：**
 ```
 ① countries.sort_order（经 goods.country_id）             缺失 → 排最后
 ② 叶子.parent_category_id 的 sort_order（二级）           缺失 → 排最后
 ③ 叶子自身 sort_order（三级，经 origin_goods.sds_category_id）缺失 → 排最后
 ④ good_priority desc, id asc（现有字段，不变）
 ```
 ---
 ### Task 1: Schema 迁移 — categories 加 sort_order + country_id
 **Files:**
 - Modify: `apps/api/prisma/schema.prisma`（Category model 约 L157-174、Country model 约 L141-154）
 - Create: `apps/api/prisma/migrations/20260901000000_add_category_sort_fields/migration.sql`
 - [ ] **Step 1.1: 先检查迁移状态（共享库防漂移）**
 ```bash
 docker run --rm --network deploy-v2_default \
  -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' \
  -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine npx prisma migrate status
 ```
 Expected: `Database schema is up to date!`。若报 drift/已存在类错误，按 AGENTS.md 经验用 `migrate resolve` 处理，禁止 reset。
 - [ ] **Step 1.2: 修改 schema.prisma**
 Category model：`sdsCategoryId` 行后新增两行，并新增 relation：
 ```prisma
  sortOrder        Int      @default(0) @map("sort_order")
  countryId        BigInt?  @map("country_id")
  country          Country? @relation(fields: [countryId], references: [id], onDelete: SetNull, onUpdate: NoAction)
 ```
 Country model：`families ProductFamily[]` 后新增：
 ```prisma
  categories Category[]
 ```
 Category model 底部 `@@index([parentCategoryId])` 后新增：
 ```prisma
  @@index([countryId])
 ```
 - [ ] **Step 1.3: 手写迁移 SQL（应用与登记分离，避免 shadow DB）**
 ```bash
 mkdir -p apps/api/prisma/migrations/20260901000000_add_category_sort_fields
 ```
 创建 `apps/api/prisma/migrations/20260901000000_add_category_sort_fields/migration.sql`：
 ```sql
 -- AlterTable
 ALTER TABLE "categories" ADD COLUMN "sort_order" INTEGER NOT NULL DEFAULT 0;
 ALTER TABLE "categories" ADD COLUMN "country_id" BIGINT;
 -- ForeignKey
 ALTER TABLE "categories" ADD CONSTRAINT "categories_country_id_fkey" FOREIGN KEY ("country_id") REFERENCES "countries"("country_id") ON DELETE SET NULL ON UPDATE NO ACTION;
 -- CreateIndex
 CREATE INDEX "categories_country_id_idx" ON "categories"("country_id");
 ```
 - [ ] **Step 1.4: 应用 SQL、登记迁移、重新生成 client**
 ```bash
 docker run --rm --network deploy-v2_default \
  -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' \
  -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine \
  npx prisma db execute --file prisma/migrations/20260901000000_add_category_sort_fields/migration.sql
 docker run --rm --network deploy-v2_default \
  -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' \
  -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine \
  npx prisma migrate resolve --applied 20260901000000_add_category_sort_fields
 docker run --rm --network deploy-v2_default \
  -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' \
  -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine npx prisma generate
 ```
 Expected: 三条命令均成功。
 - [ ] **Step 1.5: 验证列存在**
 ```bash
 docker exec deploy-v2-postgres-1 psql -U inkreach -d inkreach -c "\d categories" | grep -E 'sort_order|country_id'
 ```
 Expected: 两列均存在（`sort_order integer not null default 0`、`country_id bigint`）。
 - [ ] **Step 1.6: Commit**
 ```bash
 git add apps/api/prisma/schema.prisma apps/api/prisma/migrations/20260901000000_add_category_sort_fields
 git commit -m "feat(api): add sort_order and country_id to categories"
 ```
 ---
 ### Task 2: 数据回填脚本 — 排序表 → sort_order + 沙特 + 根关联国家
 **Files:**
 - Create: `apps/api/prisma/backfill-category-sort-order.ts`
 **行为（幂等，可重复执行）：**
 1. 解析仓库根 `排序表.md`：`# ` = 一级国家（跳过「全部」「# 工厂直发国家/地区列表」）、`## ` = 二级、`### ` = 三级
 2. 国家名 → 新树根 category 映射（写死映射表）；`中东` 条目：countries upsert「沙特」+ 根重命名 `沙特本地工厂直发`
 3. 根节点写入 `country_id`（关联 countries 行；`国内工厂` 无对应国家行 → 保持 null）
 4. 每个根内：二级按出现顺序写 `sort_order=1..n`；三级在所属二级范围内写 `sort_order=1..n`
 5. 匹配规则：先按规范化名称（trim+压缩空白）精确匹配；失败再按「首个货号 token」前缀匹配（如 `GBTM011长袖T` 命中 `GBTM011长袖T`）；**跨根禁止匹配**
 6. 未匹配条目打印 `UNMATCHED:` 清单并退出码 1；`中国（国内工厂）` 跳过 countries 部分，sort_order 照常回填
 7. countries.sort_order 按表内顺序 1..13 重写（美国 英国 日本 墨西哥 巴西 沙特 波兰 西班牙 德国 意大利 加拿大 澳大利亚 韩国）
 - [ ] **Step 2.1: 编写脚本**
 ```ts
 /**
 * 一次性回填：解析 排序表.md → categories.sort_order（二/三级）+ country_id（根）
 *             + countries.sort_order + 沙特国家行 + 中东根更名
 * 幂等：可重复执行；SDS 同步若覆盖根名称，重跑本脚本即可恢复
 */
 import { PrismaClient } from '@prisma/client';
 import { readFileSync } from 'fs';
 const prisma = new PrismaClient();
 // 排序表国家名 → 新树根分类名
 const ROOT_MAP: Record<string, string> = {
  '美国': '美国工厂直发',
  '英国': '英国本地直发',
  '日本': '日本本地工厂直发',
  '墨西哥': '墨西哥工厂本地直发',
  '巴西': '巴西本地工厂直发',
  '中东': '中东本地工厂直发', // 同时更名沙特
  '波兰': '欧洲波兰工厂直发',
  '西班牙': '欧洲西班牙工厂直发',
  '德国': '欧洲德国工厂本地直发',
  '意大利': '欧洲意大利工厂直发',
  '加拿大': '加拿大本地工厂直发',
  '澳大利亚': '澳大利亚本地工厂直发',
  '韩国': '韩国本地直发',
  '中国（国内工厂）': '国内工厂',
 };
 const norm = (s: string) => s.trim().replace(/\s+/g, '');
 const codeOf = (s: string) => (s.trim().match(/^[A-Za-z0-9]+/) ?? [''])[0];
 async function main() {
  const raw = readFileSync('/opt/inkreach-v2/排序表.md', 'utf8');
  let country: string | null = null;
  let l2: string | null = null;
  const tree: Array<{ country: string; l2: string; l3: string }> = [];
  const countryOrder: string[] = [];
  for (const line of raw.split('\n')) {
    const t = line.trim();
    if (t.startsWith('# ')) {
      const name = t.slice(2).trim();
      if (name === '全部' || name.includes('工厂直发国家')) continue;
      country = name;
      if (!countryOrder.includes(name)) countryOrder.push(name);
    } else if (t.startsWith('## ') && country) {
      l2 = t.slice(3).trim();
    } else if (t.startsWith('### ') && country && l2) {
      tree.push({ country, l2, l3: t.slice(4).trim() });
    }
  }
  const roots = await prisma.category.findMany({
    where: { parentCategoryId: null, sdsCategoryId: { not: null } },
    include: { children: { include: { children: true } } },
  });
  const rootByName = new Map(roots.map((r) => [r.categoryName, r]));
  const unmatched: string[] = [];
  // 1) countries：沙特 upsert + 顺序重写
  const countryIdByName = new Map<string, bigint>();
  for (let i = 0; i < countryOrder.length; i++) {
    const name = countryOrder[i];
    const dbCountry = name === '中东' ? '沙特' : name;
    const sortOrder = i + 1;
    const existing = await prisma.country.findUnique({ where: { countryName: dbCountry } });
    if (existing) {
      await prisma.country.update({ where: { id: existing.id }, data: { sortOrder } });
      countryIdByName.set(dbCountry, existing.id);
    } else if (dbCountry === '沙特') {
      const created = await prisma.country.create({ data: { countryName: '沙特', sortOrder } });
      countryIdByName.set('沙特', created.id);
    }
  }
  // 2) 中东根 → 沙特
  const meRoot = rootByName.get('中东本地工厂直发');
  if (meRoot) {
    await prisma.category.update({ where: { id: meRoot.id }, data: { categoryName: '沙特本地工厂直发' } });
    rootByName.set('沙特本地工厂直发', meRoot);
  }
  // 3) 根节点关联 country_id
  for (const [tableName, rootName] of Object.entries(ROOT_MAP)) {
    const root = rootByName.get(tableName === '中东' ? '沙特本地工厂直发' : rootName);
    if (!root) { unmatched.push(`ROOT MISS: ${tableName}`); continue; }
    const dbCountry = tableName === '中东' ? '沙特' : tableName === '中国（国内工厂）' ? null : tableName;
    const cid = dbCountry ? (countryIdByName.get(dbCountry) ?? null) : null;
    await prisma.category.update({ where: { id: root.id }, data: { countryId: cid } });
  }
  // 4) 二/三级 sort_order
  for (const countryName of countryOrder) {
    const rootName = ROOT_MAP[countryName];
    const root = rootByName.get(countryName === '中东' ? '沙特本地工厂直发' : rootName);
    if (!root) continue; // 已在 ROOT MISS 记录
    const l2s = root.children;
    const l2NamesInOrder: string[] = [];
    for (const row of tree) if (row.country === countryName && !l2NamesInOrder.includes(row.l2)) l2NamesInOrder.push(row.l2);
    for (let i = 0; i < l2NamesInOrder.length; i++) {
      const target = l2NamesInOrder[i];
      const mid = l2s.find((m) => norm(m.categoryName) === norm(target));
      if (!mid) { unmatched.push(`L2 MISS: ${countryName} / ${target}`); continue; }
      await prisma.category.update({ where: { id: mid.id }, data: { sortOrder: i + 1 } });
      const leaves = mid.children;
      const l3Names = tree.filter((r) => r.country === countryName && r.l2 === target).map((r) => r.l3);
      for (let j = 0; j < l3Names.length; j++) {
        const want = norm(l3Names[j]);
        const code = norm(codeOf(l3Names[j]));
        const leaf =
          leaves.find((l) => norm(l.categoryName) === want) ??
          (code ? leaves.find((l) => norm(l.categoryName).startsWith(code)) : undefined);
        if (!leaf) { unmatched.push(`L3 MISS: ${countryName} / ${target} / ${l3Names[j]}`); continue; }
        await prisma.category.update({ where: { id: leaf.id }, data: { sortOrder: j + 1 } });
      }
    }
  }
  if (unmatched.length) {
    console.error(`UNMATCHED (${unmatched.length}):\n` + unmatched.join('\n'));
    process.exit(1);
  }
  console.log('backfill done');
 }
 main().finally(() => prisma.$disconnect());
 ```
 - [ ] **Step 2.2: 执行脚本**
 ```bash
 docker run --rm --network deploy-v2_default \
  -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' \
  -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine \
  npx ts-node prisma/backfill-category-sort-order.ts
 ```
 Expected: `backfill done`，退出码 0。已知候选 UNMATCHED：美国/内衣 `DG170G170G女士无痕三角内裤`（库内为 `DG701 170G女士无痕三角内裤`，货号前缀 `DG170G170G` 不匹配）→ 将排序表.md 该行改为与库名一致后重跑；其余逐条人工核对。
 - [ ] **Step 2.3: SQL 验证回填结果**
 ```bash
 docker exec deploy-v2-postgres-1 psql -U inkreach -d inkreach -c "
 select country_name, sort_order from countries order by sort_order;" -c "
 select root.category_name, root.country_id, mid.category_name, mid.sort_order, count(leaf.category_id) leaves
 from categories root
 join categories mid on mid.parent_category_id = root.category_id
 left join categories leaf on leaf.parent_category_id = mid.category_id
 where root.parent_category_id is null and root.sds_category_id is not null
 group by 1,2,3,4 order by 1, mid.sort_order;" | head -70
 ```
 Expected: countries 13 行（沙特=6）；美国根下 男士T恤=1、女士T恤=2…；各二级下三级 sort_order 连续 1..n；每个新树根 country_id 非空（国内工厂除外）。
 抽查美国/男士T恤三级顺序：
 ```bash
 docker exec deploy-v2-postgres-1 psql -U inkreach -d inkreach -tAc "
 select category_name || ' | ' || sort_order from categories
 where parent_category_id = (select category_id from categories where category_name='男士T恤' and parent_category_id=(select category_id from categories where category_name='美国工厂直发'))
 order by sort_order;" | head -8
 ```
 Expected: 第一行 `DG001 180G纯棉T恤 （JSA002） | 1`，第二行 `DG004 230G水洗T恤（JSA003） | 2`。
 - [ ] **Step 2.4: Commit**
 ```bash
 git add apps/api/prisma/backfill-category-sort-order.ts
 git commit -m "feat(api): backfill category/country sort order from reference table"
 ```
 ---
 ### Task 3: getGoods 默认排序（TDD）
 **Files:**
 - Modify: `apps/api/src/public/public.service.ts`（getGoods 约 L186-271、PUBLIC_GOOD_LIST_INCLUDE 约 L68-77）
 - Test: `apps/api/src/public/public.service.spec.ts`（追加 describe，遵循现有真实库集成测试风格，fixture 带 `stamp` 唯一化）
 - [ ] **Step 3.1: 写失败测试**
 在 `public.service.spec.ts` 追加：
 ```ts
 describe('getGoods tree-order sorting', () => {
  // 结构: 国家A(sort=1)>MidA>LeafA1(sort=1,2条goods)、LeafA2(sort=2)；国家B(sort=2)>MidB>LeafB1
  // 期望默认顺序: A款1 -> A款2 -> B款1，同款内 priority desc；B 的 priority=99 也不能越级
  const stamp2 = `treeorder-${Date.now()}`;
  let orderedGoodIds: bigint[] = [];
  beforeAll(async () => {
    const cA = await prisma.country.create({ data: { countryName: `TA ${stamp2}`, sortOrder: 1 } });
    const cB = await prisma.country.create({ data: { countryName: `TB ${stamp2}`, sortOrder: 2 } });
    const midA = await prisma.category.create({ data: { categoryName: `MidA ${stamp2}`, sdsCategoryId: `ma-${stamp2}`, sortOrder: 1 } });
    const leafA1 = await prisma.category.create({ data: { categoryName: `LeafA1 ${stamp2}`, parentCategoryId: midA.id, sdsCategoryId: `la1-${stamp2}`, sortOrder: 1 } });
    const leafA2 = await prisma.category.create({ data: { categoryName: `LeafA2 ${stamp2}`, parentCategoryId: midA.id, sdsCategoryId: `la2-${stamp2}`, sortOrder: 2 } });
    const midB = await prisma.category.create({ data: { categoryName: `MidB ${stamp2}`, sdsCategoryId: `mb-${stamp2}`, sortOrder: 2 } });
    const leafB1 = await prisma.category.create({ data: { categoryName: `LeafB1 ${stamp2}`, parentCategoryId: midB.id, sdsCategoryId: `lb1-${stamp2}`, sortOrder: 2 } });
    const mk = async (countryId: bigint, sdsCat: string, name: string, priority: number) => {
      const og = await prisma.originGood.create({ data: { sdsGoodId: `${name}-${stamp2}`, goodName: name, sdsCategoryId: sdsCat } });
      const fam = await prisma.productFamily.create({ data: { familyName: `f-${name}-${stamp2}`, primaryOriginGoodId: og.id } });
      await prisma.originGood.update({ where: { id: og.id }, data: { familyId: fam.id } });
      return prisma.good.create({ data: { goodName: name, originGoodId: og.id, familyId: fam.id, countryId, categoryId: leafA1.id, goodPriority: priority } });
    };
    const a1Low = await mk(cA.id, `la1-${stamp2}`, 'A1Low', 1);
    const a1High = await mk(cA.id, `la1-${stamp2}`, 'A1High', 9);
    const a2 = await mk(cA.id, `la2-${stamp2}`, 'A2', 0);
    const b1 = await mk(cB.id, `lb1-${stamp2}`, 'B1', 99);
    orderedGoodIds = [a1High.id, a1Low.id, a2.id, b1.id];
  });
  it('DEFAULT: country > l2 > l3 > priority', async () => {
    const res = await service.getGoods({ page: 1, pageSize: 50 });
    const idx = res.items.map((i) => BigInt(i.goodId));
    const pos = orderedGoodIds.map((id) => idx.indexOf(id));
    expect(pos.every((p) => p >= 0)).toBe(true);            // 全部命中
    expect(pos).toEqual([...pos].sort((a, b) => a - b));    // 相对有序
    expect(idx.indexOf(orderedGoodIds[0])).toBeLessThan(idx.indexOf(orderedGoodIds[1])); // 同款内 priority desc
    expect(idx.indexOf(orderedGoodIds[1])).toBeLessThan(idx.indexOf(orderedGoodIds[2])); // 款顺序
    expect(idx.indexOf(orderedGoodIds[2])).toBeLessThan(idx.indexOf(orderedGoodIds[3])); // 国家/分类顺序优先于 priority
  });
 });
 ```
 - [ ] **Step 3.2: 跑测试确认失败**
 ```bash
 docker run --rm --network deploy-v2_default -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine npx jest src/public/public.service.spec.ts -t 'tree-order'
 ```
 Expected: FAIL（现顺序按 goodPriority desc，B1 会排最前）。
 - [ ] **Step 3.3: 实现**
 `public.service.ts`：
 1) `PUBLIC_GOOD_LIST_INCLUDE.originGood.select` 增加 `sdsCategoryId: true`
 2) 新增类型与私有方法：
 ```ts
 interface TreeOrderMeta {
  countryOrder: Map<string, number>;
  leafOrder: Map<string, { c2: number; c3: number }>; // key: origin_goods.sds_category_id
 }
 private async loadTreeOrderMeta(): Promise<TreeOrderMeta> {
  const [countries, leaves] = await Promise.all([
    this.prisma.country.findMany({ select: { id: true, sortOrder: true } }),
    this.prisma.$queryRaw<Array<{ sds_category_id: string; c2: bigint | number; c3: bigint | number }>>`
      SELECT leaf.sds_category_id,
             COALESCE(mid.sort_order, 2147483647) AS c2,
             COALESCE(leaf.sort_order, 2147483647) AS c3
      FROM categories leaf
      JOIN categories mid ON mid.category_id = leaf.parent_category_id
      WHERE leaf.sds_category_id IS NOT NULL AND leaf.sds_category_id <> ''`,
  ]);
  return {
    countryOrder: new Map(countries.map((c) => [c.id.toString(), c.sortOrder])),
    leafOrder: new Map(leaves.map((l) => [l.sds_category_id, { c2: Number(l.c2), c3: Number(l.c3) }])),
  };
 }
 private compareByTreeOrder(meta: TreeOrderMeta, a: PublicGoodListRow, b: PublicGoodListRow): number {
  const MAX = Number.MAX_SAFE_INTEGER;
  const key = (g: PublicGoodListRow): [number, number, number, number, number] => [
    meta.countryOrder.get(g.countryId.toString()) ?? MAX,
    meta.leafOrder.get(g.originGood.sdsCategoryId)?.c2 ?? MAX,
    meta.leafOrder.get(g.originGood.sdsCategoryId)?.c3 ?? MAX,
    -g.goodPriority,
    Number(g.id),
  ];
  const ka = key(a);
  const kb = key(b);
  for (let i = 0; i < ka.length; i++) if (ka[i] !== kb[i]) return ka[i] - kb[i];
  return 0;
 }
 ```
 3) `getGoods`：DEFAULT 分支的 DB `orderBy` 改为 `[{ id: 'asc' }]`（排序移内存），`findMany` 之后、分组之前插入：
 ```ts
 if (!query.sort || query.sort === 'DEFAULT') {
  const meta = await this.loadTreeOrderMeta();
  rows.sort((a, b) => this.compareByTreeOrder(meta, a, b));
 }
 ```
 （分组代表行 = 树序第一条，与现有「排序最前为代表」契约一致。）
 - [ ] **Step 3.4: 跑测试确认通过（含既有用例）**
 ```bash
 docker run --rm ... npx jest src/public/public.service.spec.ts
 ```
 Expected: 全部 PASS（现有 getGoods 断言若依赖 DEFAULT 全局顺序按新规则修正期望；fixture 多为同国家同分类，一般不受影响）。
 - [ ] **Step 3.5: Commit**
 ```bash
 git add apps/api/src/public/public.service.ts apps/api/src/public/public.service.spec.ts
 git commit -m "feat(api): order public goods by country > category > leaf > priority"
 ```
 ---
 ### Task 4: categoryId 新树双通道过滤（TDD）
 **Files:**
 - Modify: `apps/api/src/public/public.service.ts`（getGoods categoryId 过滤块，约 L194-196）
 **语义（DTO 完全不动，`categoryId` 仍是单个 id）：**
 - 传入 id 属于新树（自身/子孙存在 sds_category_id）→ 收集该节点全部子孙叶子的 `sds_category_id` 集合，过滤改为 `where.originGood.sdsCategoryId in 集合`（选二级 = 该二级下所有款）
 - 传入 id 属于老树（如 658/659/666）→ 回退现行逻辑 `where.categoryId in collectCategoryDescendants(...)`（老树节点天然跨国家，行为不变）
 - 新树 originGood 条件与 minPrice/maxPrice 的 originGood 条件合并为同一对象，互不覆盖
 **真实调用形态（验收基准）：**
 - `?categoryId=659`（老树一级，跨国家）→ 全部女士服装商品，按 ①国家→②新树二级→③新树款→④priority
 - `?categoryId=666`（老树叶子，跨国家）→ 同上
 - `?countryId=49&categoryId=658` → 英国内按 ②③④
 - 切新树后前端会传新树 id（如某国"男士T恤"或某款）→ 走 sds 通道
 - [ ] **Step 4.1: 写失败测试**
 ```ts
 describe('getGoods categoryId filter (dual-path)', () => {
  it('new-tree mid id filters via originGood.sdsCategoryId', async () => {
    const midA = await prisma.category.findFirst({ where: { categoryName: `MidA ${stamp2}` } });
    const res = await service.getGoods({ page: 1, pageSize: 50, categoryId: midA!.id.toString() });
    const names = res.items.map((i) => i.goodName).filter((n) => n.includes(stamp2));
    expect(names.length).toBe(3);                                   // A1Low/A1High/A2
    expect(names.some((n) => n.startsWith('A2'))).toBe(true);
    expect(names.every((n) => !n.startsWith('B1'))).toBe(true);     // B1 不属于 MidA
  });
  it('new-tree leaf id filters to that leaf only', async () => {
    const leafA2 = await prisma.category.findFirst({ where: { categoryName: `LeafA2 ${stamp2}` } });
    const res = await service.getGoods({ page: 1, pageSize: 50, categoryId: leafA2!.id.toString() });
    const names = res.items.map((i) => i.goodName).filter((n) => n.includes(stamp2));
    expect(names.length).toBe(1);
    expect(names[0].startsWith('A2')).toBe(true);
  });
  it('categoryId + minPrice merge originGood filters', async () => {
    const midA = await prisma.category.findFirst({ where: { categoryName: `MidA ${stamp2}` } });
    const res = await service.getGoods({
      page: 1, pageSize: 50, categoryId: midA!.id.toString(), minPrice: '999999',
    });
    expect(res.items.filter((i) => i.goodName.includes(stamp2)).length).toBe(0);
  });
 });
 ```
 （老树 id 路径由既有用例覆盖：原始 fixture 的分类无 sds_category_id，走回退分支，行为不变。）
 - [ ] **Step 4.2: 跑测试确认失败**
 同 Task 3 命令，`-t 'categoryId'`。Expected: FAIL（新树 mid/leaf id 走旧路径查空）。
 - [ ] **Step 4.3: 实现**
 `getGoods` 内替换原 categoryId 过滤块：
 ```ts
 if (query.categoryId) {
  const sds = await this.resolveSdsCategoryFilter(BigInt(query.categoryId));
  if (sds) {
    where.originGood = {
      ...(where.originGood as Prisma.OriginGoodWhereInput | undefined),
      sdsCategoryId: { in: sds },
    };
  } else {
    where.categoryId = { in: await this.collectCategoryDescendants(BigInt(query.categoryId)) };
  }
 }
 ```
 新增方法：
 ```ts
 /**
 * 新树过滤：节点自身或子孙存在 sds_category_id → 返回全部子孙(含自身)的
 * sds_category_id 集合（选二级 = 其下所有款）；否则返回 null（老树回退）。
 * 根/二级自身的 sds id 不出现在 origin_goods 上，多收集无害。
 */
 private async resolveSdsCategoryFilter(rootId: bigint): Promise<string[] | null> {
  const ids: bigint[] = [rootId];
  let frontier: bigint[] = [rootId];
  while (frontier.length) {
    const children = await this.prisma.category.findMany({
      where: { parentCategoryId: { in: frontier } },
      select: { id: true },
    });
    frontier = children.map((c) => c.id);
    ids.push(...frontier);
  }
  const rows = await this.prisma.category.findMany({
    where: { id: { in: ids }, sdsCategoryId: { not: null } },
    select: { sdsCategoryId: true },
  });
  const sds = rows.map((r) => r.sdsCategoryId!).filter((s) => s !== '');
  return sds.length ? sds : null;
 }
 ```
 - [ ] **Step 4.4: 跑全部 public 测试确认通过**
 ```bash
 docker run --rm ... npx jest src/public
 ```
 Expected: 全部 PASS（老树回退路径保证旧行为不变）。
 - [ ] **Step 4.5: Commit**
 ```bash
 git add apps/api/src/public/public.service.ts apps/api/src/public/public.service.spec.ts
 git commit -m "feat(api): support new-tree categoryId filter via origin sds category"
 ```
 ---
 ### Task 5: getCategoriesTree 切换新树（TDD）
 **Files:**
 - Modify: `apps/api/src/public/public.service.ts`（getCategoriesTree 约 L85-127）
 **语义：**
 - 内容源：新树（根 = `parentCategoryId=null AND sdsCategoryId!=null`），老树不再返回
 - 排序：根按 `country.sortOrder`（null 最后）→ 根 sortOrder；二级/三级按各自 `sort_order`
 - `countryId` 过滤：根的 `country_id` 精确匹配（不再按 goods 归属）
 - productCount：叶子 = 关联 origin_goods.sds_category_id 的在售族化 goods 数（`family_id IS NOT NULL AND delisted=false`）；二级/根 = 后代求和（现有 `buildTree` 语义）
 - productCount=0 的二级/根剪掉（空国家不出现，如沙特在配货前不展示）
 - [ ] **Step 5.1: 写失败测试**
 ```ts
 describe('getCategoriesTree (new tree)', () => {
  it('returns new-tree roots ordered by country sort_order with counts', async () => {
    const tree = await service.getCategoriesTree();
    const names = tree.map((n) => n.categoryName);
    // 新树根在返回中，老树根不在
    expect(names).toContain(`RootA ${stamp2}`);
    expect(names).not.toContain(`Pub Cat ${stamp}`); // 老树 fixture（无 sds_category_id）
    const rootA = tree.find((n) => n.categoryName === `RootA ${stamp2}`)!;
    expect(rootA.children.map((c) => c.categoryName)).toEqual([`MidA ${stamp2}`]);
    expect(rootA.children[0].children.length).toBe(2);           // LeafA1/LeafA2
    expect(rootA.children[0].children[0].productCount).toBe(2);  // A1Low/A1High
    expect(rootA.children[0].children[1].productCount).toBe(1);  // A2
    expect(rootA.productCount).toBe(3);
    // 国家顺序：RootA(sort=1) 在 RootB(sort=2) 前
    expect(names.indexOf(`RootA ${stamp2}`)).toBeLessThan(names.indexOf(`RootB ${stamp2}`));
  });
  it('countryId filters to that country root', async () => {
    const cA = await prisma.country.findFirst({ where: { countryName: `TA ${stamp2}` } });
    // Task 2 回填不会给测试 fixture 关联 country_id，此处手动关联
    const rootA = await prisma.category.findFirst({ where: { categoryName: `RootA ${stamp2}` } });
    await prisma.category.update({ where: { id: rootA!.id }, data: { countryId: cA!.id } });
    const tree = await service.getCategoriesTree(cA!.id.toString());
    expect(tree.map((n) => n.categoryName)).toEqual([`RootA ${stamp2}`]);
  });
 });
 ```
 注意：Task 3 fixture 创建根时未设 countryId，本 describe 的 beforeAll 中补齐：RootA→cA、RootB→cB（同上 update 方式），并给 leafA1/leafA2 的 goods 数依赖 Task 3 fixture（A1 两条、A2 一条）。若 describe 执行顺序影响 fixture 创建，将根/二级/叶子与国家的关联移入本 describe 自己的 beforeAll（按 stamp2 查询）。
 - [ ] **Step 5.2: 跑测试确认失败**
 ```bash
 docker run --rm ... npx jest src/public/public.service.spec.ts -t 'new tree'
 ```
 Expected: FAIL（现实现返回老树，`RootA` 不在结果中）。
 - [ ] **Step 5.3: 实现**
 `getCategoriesTree` 整体替换：
 ```ts
 async getCategoriesTree(countryId?: string): Promise<PublicCategoryNodeDto[]> {
  const countryFilter = countryId ? { countryId: BigInt(countryId) } : {};
  const roots = await this.prisma.category.findMany({
    where: { parentCategoryId: null, sdsCategoryId: { not: null }, ...countryFilter },
    orderBy: [{ country: { sortOrder: 'asc' } }, { sortOrder: 'asc' }, { id: 'asc' }],
    include: {
      children: {
        orderBy: [{ sortOrder: 'asc' }, { id: 'asc' }],
        include: { children: { orderBy: [{ sortOrder: 'asc' }, { id: 'asc' }] } },
      },
    },
  });
  const countRows = await this.prisma.$queryRaw<Array<{ sds: string; cnt: bigint | number }>>`
    SELECT og.sds_category_id AS sds, COUNT(*) AS cnt
    FROM goods g
    JOIN origin_goods og ON og.origin_good_id = g.origin_good_id
    WHERE g.family_id IS NOT NULL
      AND og.delisted = false
      AND og.sds_category_id IS NOT NULL
      ${countryId ? Prisma.sql`AND g.country_id = ${BigInt(countryId)}` : Prisma.empty}
    GROUP BY og.sds_category_id`;
  const counts = new Map(countRows.map((r) => [r.sds, Number(r.cnt)]));
  const build = (row: (typeof roots)[number]): PublicCategoryNodeDto => {
    const children = row.children.map(build).filter((c) => c.productCount > 0);
    const own = row.sdsCategoryId ? (counts.get(row.sdsCategoryId) ?? 0) : 0;
    const node = PublicCategoryNodeDto.from(row, children);
    node.productCount = own + children.reduce((sum, c) => sum + c.productCount, 0);
    return node;
  };
  return roots.map(build).filter((r) => r.productCount > 0);
 }
 ```
 （原 `buildTree` 若无其他调用方则删除；`Prisma.sql`/`Prisma.empty` 需 import `Prisma`，已有。）
 - [ ] **Step 5.4: 跑全部 public 测试确认通过**
 ```bash
 docker run --rm ... npx jest src/public
 ```
 Expected: 全部 PASS。既有 `getCategoriesTree` 用例（老树断言）改为新树断言或按新语义重写。
 - [ ] **Step 5.5: Commit**
 ```bash
 git add apps/api/src/public/public.service.ts apps/api/src/public/public.service.spec.ts
 git commit -m "feat(api): serve public categories tree from sds country-category tree"
 ```
 ---
 ### Task 6: 全量验证 + 交付
 - [ ] **Step 6.1: api 全量测试**
 ```bash
 docker run --rm --network deploy-v2_default -e DATABASE_URL='postgresql://inkreach:2628adbdf875727ae1b5556b08cb00452bb4e1f80490f6b6@postgres:5432/inkreach' -v /opt/inkreach-v2/apps/api:/app -w /app node:20-alpine npx jest
 ```
 Expected: 全部 PASS。任何失败必须修复（含其他模块被 schema 变更波及的用例）。
 - [ ] **Step 6.2: verification-before-completion 自检清单**
 - [ ] `prisma migrate status` 干净（无未应用/未登记迁移）
 - [ ] 回填 UNMATCHED 清单为空（或已逐条人工处理并记录）
 - [ ] 冒烟（真实调用形态）：`/public/goods?pageSize=10` DEFAULT = 美国 DG001 族 → DG004 族 …；`/public/goods?categoryId=659`（女士服装，跨国）按国家顺序排；`/public/goods?categoryId=666` 同上；`/public/goods?countryId=49&categoryId=658` 只返回英国男装且按 ②③④；`/public/categories` 返回新树且沙特(空)不出现
 - [ ] DTO 字段逐个对比改动前后（PublicGoodDto / PublicCategoryNodeDto / 分页结构）无增删
 - [ ] `git status` 干净，全部提交
 - [ ] **Step 6.3: 合并回 refactor/v2**
 ```bash
 git checkout refactor/v2 && git merge --no-ff feature/category-tree-sort -m "merge: feature/category-tree-sort (public goods tree-order + new category tree)"
 git branch -d feature/category-tree-sort
 ```
 （本仓库 v2 工作线为 `refactor/v2`；不推远端，部署时机由用户确认。）
 - [ ] **Step 6.4: 重建 v2-api 容器使新逻辑生效（部署步骤，执行前向用户确认）**
 ```bash
 cd /opt/inkreach-v2/deploy && docker compose -f docker-compose.v2.yml up -d --build api
 ```
 - [ ] **Step 6.5: 按项目规则沉淀**
 - 更新 `docs/references/structs.md`（categories 新字段、public 排序语义）
 - 更新 `docs/references/` 使用文档与 `README.md`（新排序规则、categoryId 多 id 用法）
 - 通用经验追加到 `AGENTS.md`（如：共享库迁移「手写 SQL + db execute + resolve」通道、树形排序的「绝对排序键 + 子集过滤」模式）
 ---
 ## 范围外（明确不做）
 - `getHomeGoods`（首页位次排序维持 position.indexVal 优先，另行需求再调）
 - 防晒衣(good_id=137) 的 sds_category_id=2393 修复（排序中沉底）
 - admin 后台分类拖拽排序 UI（本期用脚本回填；后续如需可视化调整再立项）
 - 中东根更名后 SDS 同步覆盖名称的持久对抗（重跑回填脚本即可恢复）