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/admin.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 from django.contrib import admin
-from .models import Order, OrderItem, Payment, Address
+from django.utils.html import format_html
+from .models import Order, OrderItem, Payment, Address, OrderStatus
 
 
 class PaymentInline(admin.TabularInline):
@@ -278,3 +279,100 @@ class AddressAdmin(admin.ModelAdmin):
             'classes': ('collapse',)
         }),
     )
+
+
+@admin.register(OrderStatus)
+class OrderStatusAdmin(admin.ModelAdmin):
+    """
+    Админ-панель для управления статусами заказов.
+    """
+    list_display = [
+        'order_display',
+        'name',
+        'code',
+        'color_preview',
+        'is_system',
+        'is_positive_end',
+        'is_negative_end',
+        'orders_count',
+    ]
+
+    list_filter = [
+        'is_system',
+        'is_positive_end',
+        'is_negative_end',
+    ]
+
+    search_fields = [
+        'name',
+        'code',
+        'label',
+    ]
+
+    readonly_fields = ['created_at', 'updated_at', 'created_by', 'updated_by']
+
+    fieldsets = (
+        ('Основная информация', {
+            'fields': ('code', 'name', 'label', 'order')
+        }),
+        ('Визуальное оформление', {
+            'fields': ('color',)
+        }),
+        ('Тип статуса', {
+            'fields': ('is_system', 'is_positive_end', 'is_negative_end')
+        }),
+        ('Дополнительно', {
+            'fields': ('description',),
+            'classes': ('collapse',)
+        }),
+        ('Системная информация', {
+            'fields': ('created_at', 'updated_at', 'created_by', 'updated_by', 'get_orders_count'),
+            'classes': ('collapse',)
+        }),
+    )
+
+    ordering = ['order', 'name']
+
+    def get_readonly_fields(self, request, obj=None):
+        """Делаем код readonly для системных статусов"""
+        readonly = list(self.readonly_fields)
+        readonly.append('get_orders_count')
+        if obj and obj.is_system:
+            readonly.append('code')
+        return readonly
+
+    def color_preview(self, obj):
+        """Превью цвета статуса"""
+        return format_html(
+            '<div style="width: 30px; height: 20px; background-color: {}; border: 1px solid #ccc; border-radius: 3px;"></div>',
+            obj.color
+        )
+    color_preview.short_description = 'Цвет'
+
+    def order_display(self, obj):
+        """Отображение порядкового номера с бейджем"""
+        return format_html(
+            '<span style="display: inline-block; background-color: #6c757d; color: white; padding: 2px 8px; border-radius: 10px; font-size: 11px;">{}</span>',
+            obj.order
+        )
+    order_display.short_description = 'Порядок'
+
+    def orders_count(self, obj):
+        """Количество заказов в этом статусе"""
+        count = obj.orders_count
+        if count == 0:
+            return format_html('<span style="color: #999;">{}</span>', count)
+        return format_html('<span style="font-weight: bold;">{}</span>', count)
+    orders_count.short_description = 'Заказов'
+
+    def get_orders_count(self, obj):
+        """Количество заказов для readonly поля"""
+        return obj.orders_count if obj else 0
+    get_orders_count.short_description = 'Количество заказов'
+
+    def has_delete_permission(self, request, obj=None):
+        """Запрещаем удаление системных статусов и статусов с заказами"""
+        if obj:
+            if obj.is_system or obj.orders_count > 0:
+                return False
+        return super().has_delete_permission(request, obj)