chat implemented, testing needed

backend/social/chat/migrations/0002_chatreadstatus.py

@@ -0,0 +1,28 @@
+# Generated by Django 5.2.7 on 2026-05-19 22:40
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('chat', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ChatReadStatus',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('last_read_at', models.DateTimeField(auto_now=True)),
+                ('chat', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='read_statuses', to='chat.chat')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='chat_read_statuses', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'unique_together': {('user', 'chat')},
+            },
+        ),
+    ]