Add OrderStatus to Django admin with Russian translations

- Add OrderStatusAdmin to admin panel with custom display methods
- Implement color preview, order badge, and order count displays
- Protect system statuses from deletion and code modification
- Add orders_count property to OrderStatus model
- Create migration to translate status names to Russian
- Use format_html for safe HTML rendering in admin

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

myproject/orders/migrations/0003_update_status_names_to_russian.py

@@ -0,0 +1,64 @@
+# Generated by Django 5.0.10 on 2025-11-13 14:19
+
+from django.db import migrations
+
+
+def update_status_names_to_russian(apps, schema_editor):
+    """Обновляем названия статусов на русский язык"""
+    OrderStatus = apps.get_model('orders', 'OrderStatus')
+
+    status_translations = {
+        'draft': 'Черновик',
+        'new': 'Новый',
+        'confirmed': 'Подтвережден',
+        'in_assembly': 'В сборке',
+        'in_delivery': 'В доставке',
+        'completed': 'Выполнен',
+        'return': 'Возврат',
+        'cancelled': 'Отменен',
+    }
+
+    for code, russian_name in status_translations.items():
+        try:
+            status = OrderStatus.objects.get(code=code)
+            status.name = russian_name
+            status.label = russian_name
+            status.save()
+        except OrderStatus.DoesNotExist:
+            pass
+
+
+def reverse_status_names(apps, schema_editor):
+    """Откатываем названия статусов обратно на английский (для отката миграции)"""
+    OrderStatus = apps.get_model('orders', 'OrderStatus')
+
+    status_translations = {
+        'draft': 'Draft',
+        'new': 'New',
+        'confirmed': 'Confirmed',
+        'in_assembly': 'In Assembly',
+        'in_delivery': 'In Delivery',
+        'completed': 'Completed',
+        'return': 'Return',
+        'cancelled': 'Cancelled',
+    }
+
+    for code, english_name in status_translations.items():
+        try:
+            status = OrderStatus.objects.get(code=code)
+            status.name = english_name
+            status.label = english_name
+            status.save()
+        except OrderStatus.DoesNotExist:
+            pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('orders', '0002_initial'),
+    ]
+
+    operations = [
+        migrations.RunPython(update_status_names_to_russian, reverse_status_names),
+    ]