Add platform invoices API with item templates and optional name.

Super admins can manage predefined invoice lines and issue invoices to businesses; schema is ready for future business-scoped use.

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

prisma/schema.prisma

@@ -36,6 +36,7 @@ model User {
   shoppingCards         ShoppingCard[]     @relation("ShoppingCardCustomer")
   transactionsCreated   Transaction[]      @relation("TransactionCreator")
   transactions          Transaction[]      @relation("TransactionCustomer")
+  invoicesIssued        Invoice[]          @relation("InvoiceIssuer")
   userRoles             UserRole[]
 
   @@index([cellNumber], map: "idx_users_cell_number")
@@ -88,6 +89,9 @@ model Business {
   storeItems                  StoreItem[]
   storeSpecials               StoreSpecial[]
   transactions                Transaction[]
+  invoices                    Invoice[]                 @relation("InvoiceBusiness")
+  invoicesIssued              Invoice[]                 @relation("InvoiceIssuerBusiness")
+  invoiceItemTemplates        InvoiceItemTemplate[]
   website_brand_groups        website_brand_groups[]
   website_category_groups     website_category_groups[]
   website_sliders             website_sliders[]
@@ -1125,3 +1129,86 @@ enum TransactionStatus {
 
   @@map("transaction_status")
 }
+
+enum InvoiceOwnerScope {
+  platform
+  business
+
+  @@map("invoice_owner_scope")
+}
+
+enum InvoiceStatus {
+  draft
+  issued
+  paid
+  cancelled
+
+  @@map("invoice_status")
+}
+
+model InvoiceItemTemplate {
+  id               BigInt             @id @default(autoincrement())
+  ownerScope       InvoiceOwnerScope  @map("owner_scope")
+  businessId       BigInt?            @map("business_id")
+  title            String             @db.VarChar(255)
+  duration         String?            @db.VarChar(100)
+  worktime         String?            @db.VarChar(100)
+  description      String?
+  price            Decimal            @default(0) @db.Decimal(12, 2)
+  discountedPrice  Decimal?           @map("discounted_price") @db.Decimal(12, 2)
+  sortOrder        Int                @default(0) @map("sort_order")
+  isActive         Boolean            @default(true) @map("is_active")
+  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)
+  invoiceItems     InvoiceItem[]
+
+  @@index([ownerScope, sortOrder], map: "idx_invoice_item_templates_owner_scope")
+  @@index([businessId, sortOrder], map: "idx_invoice_item_templates_business_id")
+  @@map("invoice_item_templates")
+}
+
+model Invoice {
+  id                BigInt             @id @default(autoincrement())
+  businessId        BigInt             @map("business_id")
+  ownerScope        InvoiceOwnerScope  @default(platform) @map("owner_scope")
+  issuerBusinessId  BigInt?            @map("issuer_business_id")
+  status            InvoiceStatus      @default(issued)
+  name              String?            @db.VarChar(255)
+  notes             String?
+  issuedBy          BigInt?            @map("issued_by")
+  issuedAt          DateTime           @default(now()) @map("issued_at") @db.Timestamptz(6)
+  createdAt         DateTime           @default(now()) @map("created_at") @db.Timestamptz(6)
+  updatedAt         DateTime           @default(now()) @updatedAt @map("updated_at") @db.Timestamptz(6)
+  business          Business           @relation("InvoiceBusiness", fields: [businessId], references: [id], onDelete: Cascade, onUpdate: NoAction)
+  issuerBusiness    Business?          @relation("InvoiceIssuerBusiness", fields: [issuerBusinessId], references: [id], onUpdate: NoAction)
+  issuer            User?              @relation("InvoiceIssuer", fields: [issuedBy], references: [id], onUpdate: NoAction)
+  items             InvoiceItem[]
+
+  @@index([businessId, createdAt(sort: Desc)], map: "idx_invoices_business_created")
+  @@index([ownerScope, createdAt(sort: Desc)], map: "idx_invoices_owner_scope")
+  @@index([issuerBusinessId, createdAt(sort: Desc)], map: "idx_invoices_issuer_business_id")
+  @@index([status], map: "idx_invoices_status")
+  @@map("invoices")
+}
+
+model InvoiceItem {
+  id               BigInt               @id @default(autoincrement())
+  invoiceId        BigInt               @map("invoice_id")
+  templateId       BigInt?              @map("template_id")
+  title            String               @db.VarChar(255)
+  duration         String?              @db.VarChar(100)
+  worktime         String?              @db.VarChar(100)
+  description      String?
+  price            Decimal              @default(0) @db.Decimal(12, 2)
+  discountedPrice  Decimal?             @map("discounted_price") @db.Decimal(12, 2)
+  sortOrder        Int                  @default(0) @map("sort_order")
+  createdAt        DateTime             @default(now()) @map("created_at") @db.Timestamptz(6)
+  updatedAt        DateTime             @default(now()) @updatedAt @map("updated_at") @db.Timestamptz(6)
+  invoice          Invoice              @relation(fields: [invoiceId], references: [id], onDelete: Cascade, onUpdate: NoAction)
+  template         InvoiceItemTemplate? @relation(fields: [templateId], references: [id], onUpdate: NoAction)
+
+  @@index([invoiceId, sortOrder], map: "idx_invoice_items_invoice_id")
+  @@index([templateId], map: "idx_invoice_items_template_id")
+  @@map("invoice_items")
+}