huge updates

app/apps.py

@@ -1,9 +1,12 @@
+# Core Django imports
 from django.apps import AppConfig
+from django.db.models.signals import post_migrate
+from django.dispatch import receiver
 
 
 class AppConfig(AppConfig):
-    default_auto_field = 'django.db.models.BigAutoField'
-    name = 'app'
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "app"
 
     def ready(self):
         import app.signals  # Import signals when app is ready