Explicit ordering for Lesson, Question, Choice (+id tie-break on Unit/Node): lessons no longer reshuffle after row updates

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

content/migrations/0024_explicit_ordering.py

@@ -0,0 +1,33 @@
+# Generated by Django 5.2.17 on 2026-10-15 10:07
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('content', '0023_lesson_report_content_vote'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='choice',
+            options={'ordering': ['id']},
+        ),
+        migrations.AlterModelOptions(
+            name='lesson',
+            options={'ordering': ['id']},
+        ),
+        migrations.AlterModelOptions(
+            name='node',
+            options={'ordering': ['order', 'id']},
+        ),
+        migrations.AlterModelOptions(
+            name='question',
+            options={'ordering': ['id']},
+        ),
+        migrations.AlterModelOptions(
+            name='unit',
+            options={'ordering': ['order', 'id']},
+        ),
+    ]