feat(catalog): add product catalog APIs

prisma/schema.prisma

@@ -52,15 +52,26 @@ model Category {
 
 // ── 商品 ──────────────────────────────────────────────
 model Product {
-  id          String          @id @default(cuid())
-  name        String
-  categoryId  String?
-  price       Decimal         @db.Decimal(10, 2)
-  images      String[]
-  description String?
-  status      ProductStatus   @default(DRAFT)
-  category    Category?       @relation(fields: [categoryId], references: [id])
-  orderItems  OrderItem[]
+  id            String          @id @default(cuid())
+  name          String
+  categoryId    String?
+  price         Decimal         @db.Decimal(10, 2)
+  originalPrice Decimal?        @db.Decimal(10, 2)
+  leadTime      String          @default("3-5个工作日")
+  subtitle      String?
+  images        String[]
+  iconImg       String?
+  description   String?
+  story         String?
+  scene         String?
+  tags          String[]        @default([])
+  specs         Json            @default("[]")
+  tone          Int[]           @default([])
+  mask          Json
+  sort          Int             @default(0)
+  status        ProductStatus   @default(DRAFT)
+  category      Category?       @relation(fields: [categoryId], references: [id])
+  orderItems    OrderItem[]
 
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt