Complete backend API and deployment guide

- Django REST API with lobster endpoints
- API views: list, detail, memory, tools
- Deployment guide with instructions
- Startup script for easy launch
- Requirements.txt for dependencies
- API URL routing

code/backend/api/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+class ApiConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'api'