Backoffice stage 3: orders and providers, auto-assignment

- Auto-assignment: a new order is offered to the best free provider (same ranking as
  the dispatcher hint); a decline or timeout passes it to the next one; nobody is
  offered the same order twice; after N tries it waits for a dispatcher and the team
  is notified once. The worker retries waiting orders every minute. Settings
  assign.auto / assign.maxAutoOffers (toggle on the Orders page, checkbox in old admin).
- Orders: list by day with groups (need a provider, offered, assigned, in progress,
  done, cancelled), periods and search; order card with progress, provider or ranked
  candidates ("offer" / "pick automatically"), details, checklist and photos,
  history in plain words, client, money (superadmin), payment, status change,
  reschedule (slots or custom time), cancel with fee.
- New order for a client (from the client card or the Orders page): params form,
  address, free slots for 14 days, price with the client's discount.
- Providers: list with rating, orders, declines, low ratings, next order; card with
  quality, ratings, upcoming orders, schedule and districts, admission documents,
  block/unblock with reason, new bot link, money and payouts (superadmin).
- Payout gets paidAt/note/createdById; Provider gets blockedReason/blockedAt/adminNote
  and documents (ProviderDoc).
- Tests for auto-assignment.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

packages/db/prisma/schema.prisma

@@ -290,10 +290,16 @@ model Provider {
   /// пресет ставок (джун / мидл / прайват); если задан — заменяет rateType/rateValue
   payoutPresetId String?
   payoutPreset   PayoutPreset? @relation(fields: [payoutPresetId], references: [id])
+  /// допуск: почему заблокирован и когда (active = false)
+  blockedReason String?
+  blockedAt     DateTime?
+  /// заметка команды об исполнителе (он не видит)
+  adminNote     String?
   createdAt   DateTime         @default(now())
   updatedAt   DateTime         @updatedAt
 
   districts ProviderDistrict[]
+  docs      ProviderDoc[]
   schedule  ProviderSchedule[]
   orders    Order[]
   offers    OrderOffer[]
@@ -305,6 +311,22 @@ model Provider {
   chatThreads    ChatThread[]
 }
 
+/// Документы исполнителя для допуска: паспорт, договор, справка… Файл — в приватном хранилище
+model ProviderDoc {
+  id           String   @id @default(cuid())
+  providerId   String
+  provider     Provider @relation(fields: [providerId], references: [id], onDelete: Cascade)
+  title        String
+  fileKey      String
+  fileName     String
+  mime         String
+  size         Int
+  uploadedById String?
+  createdAt    DateTime @default(now())
+
+  @@index([providerId])
+}
+
 /// Пресет ставок исполнителя: для каждой строки цены — фикс или % (см. packages/core/src/payout.ts)
 model PayoutPreset {
   id        String       @id @default(cuid())
@@ -832,7 +854,13 @@ model Payout {
   periodEnd   DateTime
   amount      Int
   status      PayoutStatus     @default(DRAFT)
+  /// когда выплачено и как (наличные, перевод…), кто отметил
+  paidAt      DateTime?
+  note        String?
+  createdById String?
   createdAt   DateTime         @default(now())
+
+  @@index([providerId, createdAt])
 }
 
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