• bodyclose (65 → 0): changed makeRequest to return (*http.Response, error) so callers properly handle errors and close response bodies; updated all ~55 call sites across bridge_test.go,
  circuit_breaker_test.go, metrics_test.go, responses_test.go, trace_test.go, apidump_test.go;

refactored circuit breaker doRequest helpers to return int (status code) since they fully consume and close the
body; added defer resp.Body.Close() for http.ReadResponse, setupInjectedToolTest, and middleware test responses; added nolint for nil-response error case in RoundTrip test