feat(orders): add recipient management and enhance order forms

- Introduced Recipient model to manage order recipients separately from customers.
- Updated Order model to link to Recipient, replacing recipient_name and recipient_phone fields.
- Enhanced OrderForm to include recipient selection modes: customer, history, and new.
- Added AJAX endpoint to fetch recipient history for customers.
- Updated admin interface to manage recipients and display recipient information in order details.
- Refactored address handling to accommodate new recipient logic.
- Improved demo order creation to include random recipients.

myproject/orders/migrations/0011_migrate_recipient_data.py

@@ -0,0 +1,77 @@
+# Generated by Django 5.0.10 on 2025-12-22 19:32
+
+from django.db import migrations
+
+
+def migrate_recipient_data_forward(apps, schema_editor):
+    """
+    Перенос данных получателей из старых полей Order в новую модель Recipient.
+    Так как поля recipient_name и recipient_phone уже удалены,
+    мы используем HistoricalOrder для восстановления данных.
+    """
+    # Получаем модели
+    HistoricalOrder = apps.get_model('orders', 'HistoricalOrder')
+    Recipient = apps.get_model('orders', 'Recipient')
+    Order = apps.get_model('orders', 'Order')
+    
+    # Словарь для кэширования recipient'ов
+    recipients_cache = {}
+    
+    # Обрабатываем каждый заказ
+    for order in Order.objects.all():
+        # Находим последнюю историческую запись для этого заказа
+        hist = HistoricalOrder.objects.filter(
+            order_number=order.order_number
+        ).order_by('-history_date').first()
+        
+        if not hist:
+            continue
+            
+        # Проверяем, есть ли данные получателя
+        recipient_name = getattr(hist, 'recipient_name', None)
+        recipient_phone = getattr(hist, 'recipient_phone', None)
+        
+        # Если получатель не указан или customer_is_recipient=True, пропускаем
+        if not recipient_name or not recipient_phone or order.customer_is_recipient:
+            continue
+        
+        # Создаем ключ для кэша
+        cache_key = f"{recipient_name}|{recipient_phone}"
+        
+        # Проверяем, есть ли уже такой получатель в кэше
+        if cache_key in recipients_cache:
+            recipient = recipients_cache[cache_key]
+        else:
+            # Создаем нового получателя
+            recipient, created = Recipient.objects.get_or_create(
+                name=recipient_name,
+                phone=recipient_phone
+            )
+            recipients_cache[cache_key] = recipient
+        
+        # Привязываем получателя к заказу
+        order.recipient = recipient
+        order.save(update_fields=['recipient'])
+
+
+def migrate_recipient_data_backward(apps, schema_editor):
+    """
+    Обратная миграция - просто очищаем recipient поле в Order.
+    Данные вернутся из HistoricalOrder при повторном apply.
+    """
+    Order = apps.get_model('orders', 'Order')
+    Order.objects.all().update(recipient=None)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('orders', '0010_remove_address_recipient_name_and_more'),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            migrate_recipient_data_forward,
+            migrate_recipient_data_backward
+        ),
+    ]