Add CRM order queue: live sync, view modal, receipt tabs, delete

Wires the CRM (exoCRM GetOrders) into the dashboard as a locally
persisted order queue instead of the previous static mockup:

- CrmClient Protocol + ExoCrmClient/StubCrmClient for the CRM's
  signed JSON-RPC API
- Order model + migration, synced from CRM on each queue view;
  soft-deleted orders stay hidden across re-syncs
- GET/DELETE /api/v1/orders with "no receipt"/"receipt issued" tabs
  (the latter is empty until Checkbox fiscalization lands)
- Dashboard: real order list, item-detail modal, tab switcher,
  one-click delete

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/app/services/orders.py

@@ -0,0 +1,82 @@
+"""Синхронизация локальной очереди заказов с CRM и работа с ней."""
+
+from __future__ import annotations
+
+from datetime import UTC, datetime
+from decimal import Decimal
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.db.models.order import Order
+from app.services.crm.client import CrmClient
+
+_CRM_STATUS = "APPROVED"
+
+
+def _to_kopecks(amount: str) -> int:
+    return int((Decimal(amount) * 100).to_integral_value())
+
+
+def _parse_crm_datetime(value: str) -> datetime:
+    return datetime.strptime(value, "%Y-%m-%d %H:%M:%S")
+
+
+async def sync_orders_from_crm(session: AsyncSession, crm: CrmClient) -> None:
+    """Подтягивает заказы CRM (статус APPROVED) в локальную таблицу.
+
+    Уже скрытые (`is_deleted`) заказы не восстанавливаются и не перезаписываются
+    — иначе кнопка «Удалить» переставала бы работать при следующем открытии
+    дашборда, т.к. CRM продолжает возвращать эти заказы как есть.
+    """
+    crm_orders = await crm.get_orders(status=_CRM_STATUS)
+    if not crm_orders:
+        return
+
+    existing = await session.scalars(
+        select(Order).where(Order.id.in_(order.id for order in crm_orders))
+    )
+    existing_by_id = {order.id: order for order in existing}
+
+    for crm_order in crm_orders:
+        local = existing_by_id.get(crm_order.id)
+        if local is not None:
+            if local.is_deleted:
+                continue
+        else:
+            local = Order(id=crm_order.id)
+            session.add(local)
+
+        local.create_date_time = _parse_crm_datetime(crm_order.create_date_time)
+        local.recipient_name = crm_order.recipient_name
+        local.recipient_phone = crm_order.recipient_phone
+        local.recipient_email = crm_order.recipient_email
+        local.waybill_number = crm_order.waybill_number
+        local.notes = crm_order.notes
+        local.total_amount_kopecks = _to_kopecks(crm_order.total.amount)
+        local.goods = [good.model_dump(by_alias=False) for good in crm_order.goods]
+
+    await session.commit()
+
+
+async def list_orders(session: AsyncSession, *, has_receipt: bool) -> list[Order]:
+    receipt_filter = (
+        Order.receipt_created_at.is_not(None) if has_receipt else Order.receipt_created_at.is_(None)
+    )
+    result = await session.scalars(
+        select(Order)
+        .where(Order.is_deleted.is_(False))
+        .where(receipt_filter)
+        .order_by(Order.create_date_time.desc())
+    )
+    return list(result)
+
+
+async def delete_order(session: AsyncSession, order_id: str) -> Order | None:
+    order = await session.get(Order, order_id)
+    if order is None or order.is_deleted:
+        return None
+
+    order.is_deleted = True
+    order.deleted_at = datetime.now(UTC)
+    return order