feat(tahesab): net sales by factor, group, and commission

Report weight after returns for the selected period, with parent customer groups and separate silver and investment commission.

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

apps/api/prisma/schema.prisma

@@ -527,6 +527,10 @@ model CustomerGroup {
   /// گروه متناظر در ته‌حساب (GID) روی همان اتصال
   tahesabConnectionId String?
   tahesabGid          String?
+  /// گروه اصلی؛ فقط یک سطح (اصلی / فرعی)
+  parentId            String?
+  parent              CustomerGroup?     @relation("CustomerGroupTree", fields: [parentId], references: [id], onDelete: SetNull)
+  children            CustomerGroup[]    @relation("CustomerGroupTree")
   people              PersonGroupLink[]
   companies           CompanyGroupLink[]
   createdAt           DateTime           @default(now())
@@ -535,6 +539,7 @@ model CustomerGroup {
   @@unique([organizationId, name])
   @@index([organizationId, position])
   @@index([tahesabConnectionId, tahesabGid])
+  @@index([parentId])
 }
 
 model PersonGroupLink {
@@ -1879,6 +1884,10 @@ model AccountingAsnadLine {
   mali           Float?
   count          Float?
   ayar           Float?
+  /// درصد اجرت سند ته‌حساب؛ بعد از همگام‌سازی پر می‌شود
+  darsad         Float?
+  darsadTalayee  Float?
+  maliatDarsad   Float?
   mazaneh        Float?
   fi             Float?
   sharh1         String?