将文件夹命名从拼音改为英文，整理了一些代码，将导入语句迁移到了头部

products/migrations/0013_shangpinleixing_bankuai.py

@@ -0,0 +1,20 @@
+# Generated by Django 4.2.27 on 2026-05-14 04:25
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dengji', '0003_alter_dashoubiaoxian_bankuai'),
+        ('shangpin', '0012_shangpinmeiritongji'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='shangpinleixing',
+            name='bankuai',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='dengji.bankuai', verbose_name='所属板块'),
+        ),
+    ]