add remaining weight to quota

apps/product/migrations/0028_quota_remaining_weight.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0 on 2025-06-16 07:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('product', '0027_alter_quotadistribution_assigner_organization'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='quota',
+            name='remaining_weight',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
+    ]