feat: Add customer prefill from URL parameter in order creation

- Modified order_create view to read customer from GET parameter
- Pass preselected_customer to template context
- Template renders select with preselected option for Select2
- Fixed draft creation timing with callback after Select2 initialization
- Auto-create draft when customer is preselected from URL
- Graceful handling if customer not found or invalid ID

myproject/customers/views.py

@@ -89,10 +89,24 @@ def customer_detail(request, pk):
     active_orders = customer.orders.exclude(payment_status='paid')
     total_debt = sum(order.amount_due for order in active_orders)
 
+    # История транзакций кошелька (последние 20)
+    from .models import WalletTransaction
+    wallet_transactions = WalletTransaction.objects.filter(
+        customer=customer
+    ).select_related('order', 'created_by').order_by('-created_at')[:20]
+
+    # История заказов с пагинацией
+    orders_list = customer.orders.all().order_by('-created_at')
+    paginator = Paginator(orders_list, 10)  # 10 заказов на страницу
+    page_number = request.GET.get('page')
+    orders_page = paginator.get_page(page_number)
+
     context = {
         'customer': customer,
         'total_debt': total_debt,
         'active_orders_count': active_orders.count(),
+        'wallet_transactions': wallet_transactions,
+        'orders_page': orders_page,
     }
     return render(request, 'customers/customer_detail.html', context)