feat: refunds, failed and pending payments work

purchase/migrations/0009_coursepurchase_stripe_charge_id_and_more.py

@@ -0,0 +1,23 @@
+# Generated by Django 6.0.4 on 2026-05-20 17:28
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('purchase', '0008_remove_purchasableproduct_stripe_payment_url'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='coursepurchase',
+            name='stripe_charge_id',
+            field=models.CharField(blank=True, max_length=255, null=True),
+        ),
+        migrations.AddField(
+            model_name='coursepurchase',
+            name='stripe_payment_intent_id',
+            field=models.CharField(blank=True, max_length=255, null=True),
+        ),
+    ]