Add dock category seed helper and product tag/prep fields.

Ensures chocolate and baklava exist for the website categories dock, and supports tag-filtered product lists for home carousels.

Co-authored-by: Cursor <cursoragent@cursor.com>

prisma/migrations/20260923120000_product_preparation_hours/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Product" ADD COLUMN "preparationHours" INTEGER;

prisma/schema.prisma

@@ -156,23 +156,24 @@ model CategoryOptionEntry {
 }
 
 model Product {
-  id            String                @id @default(cuid())
-  nameFa        String
-  nameEn        String
-  price         Int                   @default(0)
-  sellUnit      SellUnit              @default(unit)
-  categoryId    String
-  category      Category              @relation(fields: [categoryId], references: [id], onDelete: Restrict)
-  intro         String                @default("")
-  description   String                @default("")
-  mainImageUrl  String?
-  mainImageKey  String?
-  tags          String[]              @default([])
-  createdAt     DateTime              @default(now())
-  updatedAt     DateTime              @updatedAt
-  gallery       ProductGalleryImage[]
-  options       ProductOption[]
-  orderItems    OrderItem[]
+  id                String                @id @default(cuid())
+  nameFa            String
+  nameEn            String
+  price             Int                   @default(0)
+  sellUnit          SellUnit              @default(unit)
+  categoryId        String
+  category          Category              @relation(fields: [categoryId], references: [id], onDelete: Restrict)
+  intro             String                @default("")
+  description       String                @default("")
+  preparationHours  Int?
+  mainImageUrl      String?
+  mainImageKey      String?
+  tags              String[]              @default([])
+  createdAt         DateTime              @default(now())
+  updatedAt         DateTime              @updatedAt
+  gallery           ProductGalleryImage[]
+  options           ProductOption[]
+  orderItems        OrderItem[]
 
   @@index([categoryId])
   @@index([price])