Правки и улучшения визуала. Добавил функционал отметок.

dbapp/mainapp/migrations/0007_make_source_required.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.2.7 on 2025-11-16 15:26
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mainapp', '0006_change_objectmark_to_source'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='objectmark',
+            name='source',
+            field=models.ForeignKey(help_text='Связанный источник', on_delete=django.db.models.deletion.CASCADE, related_name='marks', to='mainapp.source', verbose_name='Источник'),
+        ),
+    ]