Fix Google OAuth signin and clean email subjects

- Add social account auto-signup settings to prevent password reset emails
- Change default site name from 'Django Template' to 'App' for cleaner email subjects
- Enable automatic account linking for Google OAuth users

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps/core/management/commands/configure_site.py

@@ -16,7 +16,7 @@ class Command(BaseCommand):
         parser.add_argument(
             '--name',
             type=str,
-            default='Django Template',
+            default='App',
             help='Display name for the site',
         )
 

django_project/settings/base.py

@@ -182,6 +182,10 @@ SOCIALACCOUNT_PROVIDERS = {
 }
 
 SOCIALACCOUNT_LOGIN_ON_GET = True
+SOCIALACCOUNT_AUTO_SIGNUP = True
+SOCIALACCOUNT_EMAIL_REQUIRED = True
+SOCIALACCOUNT_EMAIL_VERIFICATION = 'none'
+SOCIALACCOUNT_QUERY_EMAIL = True
 
 # Tailwind CSS Configuration
 TAILWIND_APP_NAME = 'theme'