feat: sse && multi_merchant completed

basic_info/migrations/0009_product_minimum_quantity.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2025-11-10 07:52
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basic_info', '0008_merchant_auto_complete_stock_change'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='product',
+            name='minimum_quantity',
+            field=models.IntegerField(blank=True, null=True, verbose_name='最低库存量'),
+        ),
+    ]