Add standalone Leads module for prospect outreach before customers.

Import large Excel lists with duplicate checks, assign and kanban follow-up, convert to Person when ready; also fix OTP mobile mask order and SMS brand name to منتکت.

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

apps/api/prisma/schema.prisma

@@ -203,6 +203,10 @@ model Organization {
   voipConnections        VoipConnection[]
   reservationServices    ReservationService[]
   reservationAppointments ReservationAppointment[]
+  leads                  Lead[]
+  leadStages             LeadStage[]
+  leadEvents             LeadEvent[]
+  leadImportJobs         LeadImportJob[]
 }
 
 model User {
@@ -251,6 +255,8 @@ model User {
   assignedProjectCards ProjectCard[] @relation("ProjectCardAssignees")
   teamMemberships TeamMember[]
   reservationAssignments ReservationAppointment[] @relation("ReservationAssignee")
+  assignedLeads  Lead[]       @relation("LeadAssignee")
+  createdLeads   Lead[]       @relation("LeadCreator")
   createdAt      DateTime     @default(now())
   updatedAt      DateTime     @updatedAt
 
@@ -1922,3 +1928,116 @@ model ReservationAppointment {
   @@index([personId])
   @@index([assigneeId, startsAt])
 }
+
+/// مرحله/وضعیت لید — هم لیست وضعیت و هم ستون Kanban
+model LeadStage {
+  id             String       @id @default(cuid())
+  organizationId String
+  organization   Organization @relation(fields: [organizationId], references: [id], onDelete: Cascade)
+  name           String
+  position       Int          @default(0)
+  color          String       @default("teal")
+  /// نمایش در تخته Kanban
+  showOnBoard    Boolean      @default(true)
+  isConverted    Boolean      @default(false)
+  isLost         Boolean      @default(false)
+  isUnqualified  Boolean      @default(false)
+  leads          Lead[]
+  createdAt      DateTime     @default(now())
+  updatedAt      DateTime     @updatedAt
+
+  @@index([organizationId, position])
+  @@unique([organizationId, name])
+}
+
+/// مخاطب بالقوه — جدا از Person/مشتری
+model Lead {
+  id               String       @id @default(cuid())
+  organizationId   String
+  organization     Organization @relation(fields: [organizationId], references: [id], onDelete: Cascade)
+  /// نام فروشگاه / شخص / عنوان نمایشی
+  title            String
+  /// نام مالک یا مسئول
+  contactName      String?
+  mobile           String
+  phone            String?
+  city             String?
+  region           String?
+  /// صنف
+  trade            String?
+  source           String?
+  notes            String?
+  estimatedValue   Decimal?     @db.Decimal(18, 2)
+  stageId          String
+  stage            LeadStage    @relation(fields: [stageId], references: [id], onDelete: Restrict)
+  position         Int          @default(0)
+  assigneeId       String?
+  assignee         User?        @relation("LeadAssignee", fields: [assigneeId], references: [id], onDelete: SetNull)
+  createdById      String?
+  createdBy        User?        @relation("LeadCreator", fields: [createdById], references: [id], onDelete: SetNull)
+  lastContactAt    DateTime?
+  nextFollowUpAt   DateTime?
+  /// شخص مشتری پس از تبدیل
+  convertedPersonId String?
+  convertedAt      DateTime?
+  archivedAt       DateTime?
+  events           LeadEvent[]
+  createdAt        DateTime     @default(now())
+  updatedAt        DateTime     @updatedAt
+
+  @@unique([organizationId, mobile])
+  @@index([organizationId, stageId, position])
+  @@index([organizationId, assigneeId])
+  @@index([organizationId, nextFollowUpAt])
+  @@index([organizationId, lastContactAt])
+  @@index([organizationId, archivedAt])
+  @@index([organizationId, createdAt])
+  @@index([organizationId, city])
+  @@index([organizationId, trade])
+  @@index([organizationId, source])
+}
+
+model LeadEvent {
+  id             String       @id @default(cuid())
+  organizationId String
+  organization   Organization @relation(fields: [organizationId], references: [id], onDelete: Cascade)
+  leadId         String
+  lead           Lead         @relation(fields: [leadId], references: [id], onDelete: Cascade)
+  /// created | assigned | stage_changed | call | note | task | follow_up | converted | archived | import
+  type           String
+  title          String
+  body           String?
+  meta           Json?
+  actorId        String?
+  createdAt      DateTime     @default(now())
+
+  @@index([leadId, createdAt])
+  @@index([organizationId, createdAt])
+}
+
+/// ایمپورت پس‌زمینه فایل اکسل لید
+model LeadImportJob {
+  id             String       @id @default(cuid())
+  organizationId String
+  organization   Organization @relation(fields: [organizationId], references: [id], onDelete: Cascade)
+  createdById    String?
+  fileName       String?
+  /// pending | processing | done | failed
+  status         String       @default("pending")
+  totalCount     Int          @default(0)
+  processedCount Int          @default(0)
+  successCount   Int          @default(0)
+  duplicateCount Int          @default(0)
+  errorCount     Int          @default(0)
+  /// ردیف‌های خام [{...}]
+  rows           Json         @default("[]")
+  /// خلاصه خطاها
+  errorSamples   Json         @default("[]")
+  startedAt      DateTime?
+  finishedAt     DateTime?
+  createdAt      DateTime     @default(now())
+  updatedAt      DateTime     @updatedAt
+
+  @@index([organizationId, status, createdAt])
+  @@index([status, createdAt])
+}