First commit of claude's rework in django + vanillajs fronted

apps/users/management/commands/create_default_admin.py

@@ -0,0 +1,21 @@
+from django.contrib.auth import get_user_model
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    help = 'Create a default superuser for development (idempotent).'
+
+    def handle(self, *args, **options):
+        User = get_user_model()
+        email = 'admin@shooterhub.local'
+        if User.objects.filter(email=email).exists():
+            self.stdout.write(f'Admin already exists: {email}')
+            return
+        User.objects.create_superuser(
+            username='admin',
+            email=email,
+            password='changeme',
+        )
+        self.stdout.write(self.style.SUCCESS(
+            f'Superuser created — email: {email}  password: changeme'
+        ))