One more attempt with Claude's help to close connections

llama_stack/core/server/quota.py

@@ -108,3 +108,8 @@ class QuotaMiddleware:
         )
         body = json.dumps({"error": {"message": message}}).encode()
         await send({"type": "http.response.body", "body": body})
+
+    async def close(self):
+        """Close the KV store connection."""
+        if self.kv is not None:
+            await self.kv.close()