feat: stock module

stock/migrations/0030_alter_stocksnapshot_delta.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2025-11-04 09:50
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stock', '0029_alter_inventory_quantity_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='stocksnapshot',
+            name='delta',
+            field=models.DecimalField(decimal_places=2, max_digits=10, verbose_name='库存变动数量'),
+        ),
+    ]