Adding a task generated from the account balance to products

apps/api/prisma/schema.prisma

@@ -647,6 +647,7 @@ model Product {
   quoteLineItems    QuoteLineItem[]
   invoiceLineItems  InvoiceLineItem[]
   stockMovements    StockMovement[]
+  accountingLinks   ProductAccountingLink[]
   createdAt         DateTime       @default(now())
   updatedAt         DateTime       @updatedAt
 
@@ -1316,6 +1317,7 @@ model AccountingConnection {
   createdAt       DateTime               @default(now())
   updatedAt       DateTime               @updatedAt
   personLinks     PersonAccountingLink[]
+  productLinks    ProductAccountingLink[]
   documentLogs    AccountingDocumentLog[]
   balanceCaches   AccountingBalanceCache[]
 
@@ -1346,6 +1348,29 @@ model PersonAccountingLink {
   @@index([connectionId])
 }
 
+/// لینک محصول CRM ↔ نام کارساخته (یا معادل) در ته‌حساب
+model ProductAccountingLink {
+  id           String               @id @default(cuid())
+  productId    String
+  product      Product              @relation(fields: [productId], references: [id], onDelete: Cascade)
+  connectionId String
+  connection   AccountingConnection @relation(fields: [connectionId], references: [id], onDelete: Cascade)
+  /// نام کارساخته در ته‌حساب (DoListNameKarsakhte.Name)
+  externalName String
+  ayar         Int?
+  vaznSabet    Float?
+  /// import | manual
+  matchMethod  String               @default("import")
+  linkedAt     DateTime             @default(now())
+  createdAt    DateTime             @default(now())
+  updatedAt    DateTime             @updatedAt
+
+  @@unique([productId, connectionId])
+  @@unique([connectionId, externalName])
+  @@index([productId])
+  @@index([connectionId])
+}
+
 model AccountingDocumentLog {
   id               String               @id @default(cuid())
   connectionId     String