changed #id-list-table everywhere to #id_list_table; duplicate item validation in apps.dashboard.tests.test_models, where ListAndItemModelsTest has been broken out into two different test models

src/apps/dashboard/migrations/0004_alter_item_unique_together.py

@@ -0,0 +1,17 @@
+# Generated by Django 6.0 on 2026-01-24 02:45
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dashboard', '0003_list_item_list'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='item',
+            unique_together={('list', 'text')},
+        ),
+    ]