Update project

ai_tutor/migrations/0002_askidempotency.py

@@ -0,0 +1,29 @@
+# Generated by Django 5.2.17 on 2026-08-19 11:36
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ai_tutor', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AskIdempotency',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('user_id', models.IntegerField(db_index=True)),
+                ('idempotency_key', models.CharField(max_length=100)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('assistant_message', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='+', to='ai_tutor.message')),
+                ('conversation', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='+', to='ai_tutor.conversation')),
+                ('user_message', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='+', to='ai_tutor.message')),
+            ],
+            options={
+                'constraints': [models.UniqueConstraint(fields=('user_id', 'idempotency_key'), name='uniq_ask_idempotency_key')],
+            },
+        ),
+    ]