Document secure secrets and prune unused assets

backend/rate_limit.py

@@ -0,0 +1,10 @@
+"""Rate limiting utilities for the FastAPI application."""
+
+from slowapi import Limiter
+from slowapi.util import get_remote_address
+
+
+limiter = Limiter(key_func=get_remote_address)
+
+
+__all__ = ["limiter"]