Add invoice cancelled status, treasury event name, and voucher number backfill.

EOF

Co-authored-by: Cursor <cursoragent@cursor.com>

accounting/migrations/0007_backfill_voucher_numbers.py

@@ -0,0 +1,31 @@
+from django.db import migrations
+
+
+def backfill_voucher_numbers(apps, schema_editor):
+    Voucher = apps.get_model('accounting', 'Voucher')
+
+    max_number = (
+        Voucher.objects.exclude(number__lte=0)
+        .order_by('-number')
+        .values_list('number', flat=True)
+        .first()
+        or 0
+    )
+
+    missing_number_vouchers = Voucher.objects.filter(number__lte=0).order_by('created_at', 'id')
+
+    next_number = max_number + 1
+    for voucher in missing_number_vouchers:
+        voucher.number = next_number
+        voucher.save(update_fields=['number'])
+        next_number += 1
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('accounting', '0006_treasury_fee_fields'),
+    ]
+
+    operations = [
+        migrations.RunPython(backfill_voucher_numbers, migrations.RunPython.noop),
+    ]

accounting/migrations/0008_invoice_cancelled_status.py

@@ -0,0 +1,25 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0007_backfill_voucher_numbers'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='invoice',
+            name='status',
+            field=models.CharField(
+                choices=[
+                    ('draft', 'Draft'),
+                    ('confirmed', 'Confirmed'),
+                    ('paid', 'Paid'),
+                    ('cancelled', 'Cancelled'),
+                ],
+                default='draft',
+                max_length=20,
+            ),
+        ),
+    ]

accounting/migrations/0009_treasury_event_name.py

@@ -0,0 +1,30 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    """
+    DB already has event_name (NOT NULL) from an earlier manual/out-of-band change.
+    Sync Django state and ensure NULLs become empty string so inserts never omit the column.
+    """
+
+    dependencies = [
+        ('accounting', '0008_invoice_cancelled_status'),
+    ]
+
+    operations = [
+        migrations.SeparateDatabaseAndState(
+            state_operations=[
+                migrations.AddField(
+                    model_name='treasurytxn',
+                    name='event_name',
+                    field=models.CharField(blank=True, default='', max_length=200),
+                ),
+            ],
+            database_operations=[
+                migrations.RunSQL(
+                    sql="UPDATE accounting_treasury_txns SET event_name = '' WHERE event_name IS NULL;",
+                    reverse_sql=migrations.RunSQL.noop,
+                ),
+            ],
+        ),
+    ]