Monorepo skeleton, Prisma schema, core domain and services with tests

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

packages/services/src/context.ts

@@ -0,0 +1,62 @@
+import type { Db } from '@barev/db';
+import type { OrderStatus } from '@barev/core';
+
+/** Доменные события. Воркер превращает их в уведомления на языке получателя. */
+export type DomainEvent =
+  | { type: 'order.created'; orderId: string }
+  | { type: 'order.status'; orderId: string; from: OrderStatus; to: OrderStatus }
+  /** событие без смены статуса, например «Я на месте» */
+  | { type: 'order.event'; orderId: string; code: string }
+  | { type: 'order.rescheduled'; orderId: string }
+  | { type: 'order.unassigned'; orderId: string; providerId: string }
+  | { type: 'offer.created'; offerId: string }
+  | { type: 'offer.declined'; offerId: string }
+  | { type: 'offer.expired'; offerId: string }
+  | { type: 'company.order'; orderId: string; companyId: string }
+  | { type: 'order.reminder'; orderId: string; hours: 24 | 1 }
+  | { type: 'gift.activated'; clientId: string; endsAt: string };
+
+export interface Notifier {
+  emit(event: DomainEvent): Promise<void> | void;
+}
+
+export interface Ctx {
+  db: Db;
+  notify: Notifier;
+  now: () => Date;
+}
+
+export const silentNotifier: Notifier = { emit: () => {} };
+
+/** Ошибка бизнес-логики. code переводится на фронте как errors.<code>. */
+export class DomainError extends Error {
+  constructor(
+    public code: DomainErrorCode,
+    public details?: Record<string, unknown>,
+  ) {
+    super(code);
+    this.name = 'DomainError';
+  }
+}
+
+export type DomainErrorCode =
+  | 'NOT_FOUND'
+  | 'FORBIDDEN'
+  | 'CONSENT_REQUIRED'
+  | 'SERVICE_UNAVAILABLE'
+  | 'INVALID_PARAMS'
+  | 'SLOT_UNAVAILABLE'
+  | 'ADDRESS_REQUIRED'
+  | 'TRANSITION_NOT_ALLOWED'
+  | 'CHECKLIST_INCOMPLETE'
+  | 'PHOTO_REQUIRED'
+  | 'ESTIMATE_NOT_ACCEPTED'
+  | 'CANCEL_VIA_OPERATOR'
+  | 'RESCHEDULE_VIA_OPERATOR'
+  | 'AGENCY_CODE_INVALID'
+  | 'AGENCY_ALREADY_SET'
+  | 'OFFER_NOT_ACTIVE'
+  | 'PROVIDER_BUSY'
+  | 'ALREADY_ASSIGNED'
+  | 'INVITE_INVALID'
+  | 'NOT_PAID_STATE';