Fix: use explicit order field for workflow actions (#11781)

src/documents/migrations/1076_workflowaction_order.py

@@ -0,0 +1,28 @@
+# Generated by Django 5.2.7 on 2026-01-14 16:53
+
+from django.db import migrations
+from django.db import models
+from django.db.models import F
+
+
+def populate_action_order(apps, schema_editor):
+    WorkflowAction = apps.get_model("documents", "WorkflowAction")
+    WorkflowAction.objects.all().update(order=F("id"))
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("documents", "1075_alter_paperlesstask_task_name"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="workflowaction",
+            name="order",
+            field=models.PositiveIntegerField(default=0, verbose_name="order"),
+        ),
+        migrations.RunPython(
+            populate_action_order,
+            reverse_code=migrations.RunPython.noop,
+        ),
+    ]