feat(public): family-first contract — goodId=familyId, strict 5-dim price matrix

公开契约族化（前端只需知道款号/族）：
- GET /public/goods 一族一条（goodId=族ID，price=族起价，分页作用于分组后）；
  无族商品（自定义）不进任何公开端点（列表/首页/分类树/标签统计）
- GET /public/goods/:goodId 仅认族 ID；公共字段取代表 Good，变体=全体成员并集，
  尺码表/包装规格=族物化并集；旧 SDS 链接 ID 寻址 404
- priceMatrix 严格五维：尺码×颜色×印花数量×工艺×物流；维度来源改为链接级
  标签（人工接管按人工标签），弃用原始 craftLabel；CUSTOM 成员尊重显式标签
- 名称派生补裸「单面/双面」写法（直喷双面→双面印花+直喷，18 条存量链接修复）
- family_price_overrides 加 print_count 列（五键唯一），PUT/DELETE/校验五键化
- admin 编辑弹窗矩阵消费适配（SKU 列直读 printCount，成员格子三维匹配，
  改价 payload 带 printCount）
- 存量 339 族已全量重算；api 162/162、admin 22/22、双端构建绿

apps/api/src/product-families/product-families.service.spec.ts

@@ -239,12 +239,12 @@ describe('ProductFamiliesService', () => {
 
     await expect(
       service.putPriceOverrides(fid, [
-        { sizeId: 'size_S', colorId: 'color_blk', craft: '不存在的工艺', logistics: '包邮', price: 1 },
+        { sizeId: 'size_S', colorId: 'color_blk', printCount: '单面印花', craft: '不存在的工艺', logistics: '包邮', price: 1 },
       ]),
     ).rejects.toThrow(BadRequestException);
 
     const result = (await service.putPriceOverrides(fid, [
-      { sizeId: 'size_S', colorId: 'color_blk', craft: '单面印花', logistics: '包邮', price: 23, note: '促销' },
+      { sizeId: 'size_S', colorId: 'color_blk', printCount: '单面印花', craft: '烫画', logistics: '包邮', price: 23, note: '促销' },
     ])) as any;
     expect(result.items).toHaveLength(1);
     expect(result.items[0].derivedPrice).toBe('25');
@@ -256,7 +256,7 @@ describe('ProductFamiliesService', () => {
     expect(row.manual).toBe(true);
 
     const restored = (await service.deletePriceOverrides(fid, {
-      cells: [{ sizeId: 'size_S', colorId: 'color_blk', craft: '单面印花', logistics: '包邮' }],
+      cells: [{ sizeId: 'size_S', colorId: 'color_blk', printCount: '单面印花', craft: '烫画', logistics: '包邮' }],
     })) as any;
     expect(restored.items).toHaveLength(0);
     const after2 = await prisma.productFamily.findUniqueOrThrow({ where: { id: fid } });