feat(product-family): link-level tags (origin_good_tags) with manual override + member detail enrichment

apps/api/prisma/schema.prisma

@@ -43,6 +43,9 @@ model OriginGood {
   detail   OriginGoodDetail?
   variants OriginGoodVariant[]
   mergedIntoGoods GoodOriginGood[]
+  // 链接级标签：自动派生（manual=false）或人工接管（tagsManual=true 后全部 manual）
+  tagsManual Boolean @default(false) @map("tags_manual")
+  originGoodTags OriginGoodTag[]
 
   @@index([sdsCategoryId])
   @@index([source])
@@ -53,6 +56,23 @@ model OriginGood {
   @@map("origin_goods")
 }
 
+// ---------- OriginGood-Tag Junction（链接级标签：自动派生 + 人工修正） ----------
+model OriginGoodTag {
+  id           BigInt   @id @default(autoincrement())
+  originGoodId BigInt   @map("origin_good_id")
+  tagId        BigInt   @map("tag_id")
+  // true = 人工配置（自动同步永不覆盖）；false = 按链接名称自动派生
+  manual    Boolean  @default(false)
+  createdAt DateTime @default(now()) @map("created_at") @db.Timestamptz(6)
+
+  originGood OriginGood @relation(fields: [originGoodId], references: [id], onDelete: Cascade, onUpdate: NoAction)
+  tag        Tag        @relation(fields: [tagId], references: [id], onDelete: Cascade, onUpdate: NoAction)
+
+  @@unique([originGoodId, tagId])
+  @@index([tagId])
+  @@map("origin_good_tags")
+}
+
 // ---------- Origin Good Details (cached from SDS /products/{id}) ----------
 model OriginGoodDetail {
   originGoodId         BigInt    @id @map("origin_good_id")
@@ -182,6 +202,7 @@ model Tag {
 
   goods    Good[]
   goodTags GoodTag[]
+  originGoodTags OriginGoodTag[]
   tagGroup TagGroup? @relation(fields: [tagGroupId], references: [id], onDelete: SetNull, onUpdate: NoAction)
 
   @@index([tagGroupId])