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>

apps/backoffice/src/pages/Dashboard.tsx

@@ -55,12 +55,12 @@ export function Dashboard({ me }: { me: Me }) {
 
 type Att = { unassigned: number; unreadChats: number; webRequests: number; leads: number; appRequests: number; lowRatings: number; expiring: number };
 const ATT: { key: keyof Att; href: string; urgent?: boolean; fill: string; ink: string }[] = [
-  { key: 'unassigned', href: '#/orders', urgent: true, fill: 'var(--bc-accent)', ink: '#fff' },
+  { key: 'unassigned', href: '#/orders?group=new', urgent: true, fill: 'var(--bc-accent)', ink: '#fff' },
   { key: 'unreadChats', href: '#/chats', urgent: true, fill: 'var(--bc-accent)', ink: '#fff' },
   { key: 'webRequests', href: `${OLD_ADMIN_URL}#/requests`, fill: 'var(--bc-blue)', ink: 'var(--bc-blue-ink)' },
   { key: 'leads', href: `${OLD_ADMIN_URL}#/leads`, fill: 'var(--bc-docs)', ink: 'var(--bc-docs-ink)' },
   { key: 'appRequests', href: `${OLD_ADMIN_URL}#/app-requests`, fill: 'var(--bc-learn)', ink: 'var(--bc-learn-ink)' },
-  { key: 'lowRatings', href: '#/orders', fill: 'var(--bc-pink)', ink: 'var(--bc-plum)' },
+  { key: 'lowRatings', href: '#/providers', fill: 'var(--bc-pink)', ink: 'var(--bc-plum)' },
   { key: 'expiring', href: '#/clients?expiring=7', fill: 'var(--bc-perks)', ink: 'var(--bc-perks-ink)' },
 ];