Add catalog EN/AR translations with AI translate-all by locale.

Store product/category translations in entity_translations, expose CMS APIs, and gate the MultiLanguage Data module for businesses.

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

prisma/schema.prisma

@@ -106,6 +106,7 @@ model Business {
   comments                        Comment[]
   contactSubmissions              ContactSubmission[]
   domains                         Domain[]
+  entityTranslations              EntityTranslation[]
   expertReviews                   ExpertReview[]
   favorites                       Favorite[]
   invoiceItemTemplates            InvoiceItemTemplate[]
@@ -1738,3 +1739,46 @@ model WebsitePageViewCounter {
   @@index([businessId, pageKind], map: "idx_website_page_view_counters_business_kind")
   @@map("website_page_view_counters")
 }
+
+model EntityTranslation {
+  id          BigInt                 @id @default(autoincrement())
+  businessId  BigInt                 @map("business_id")
+  entityType  TranslationEntityType  @map("entity_type")
+  entityId    BigInt                 @map("entity_id")
+  locale      TranslationLocale
+  fields      Json                   @default("{}")
+  sourceHash  String                 @map("source_hash") @db.VarChar(64)
+  status      TranslationStatus      @default(pending)
+  generatedBy String                 @default("ai") @map("generated_by") @db.VarChar(16)
+  createdAt   DateTime               @default(now()) @map("created_at") @db.Timestamptz(6)
+  updatedAt   DateTime               @default(now()) @updatedAt @map("updated_at") @db.Timestamptz(6)
+  business    Business               @relation(fields: [businessId], references: [id], onDelete: Cascade, onUpdate: NoAction)
+
+  @@unique([entityType, entityId, locale], map: "entity_translations_entity_locale_unique")
+  @@index([businessId], map: "idx_entity_translations_business_id")
+  @@index([entityType, entityId], map: "idx_entity_translations_entity")
+  @@map("entity_translations")
+}
+
+enum TranslationEntityType {
+  product
+  category
+
+  @@map("translation_entity_type")
+}
+
+enum TranslationLocale {
+  en
+  ar
+
+  @@map("translation_locale")
+}
+
+enum TranslationStatus {
+  pending
+  ready
+  stale
+  failed
+
+  @@map("translation_status")
+}