Add merge migration for conflicting 0006 leaves

0006_item_category_unending was already applied to the dev DB before
the rename commit, causing a conflict with 0006_item_status_unending.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backlogger/migrations/0007_merge.py

@@ -0,0 +1,12 @@
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('backlogger', '0006_item_category_unending'),
+        ('backlogger', '0006_item_status_unending'),
+    ]
+
+    operations = [
+    ]