Unify NVIDIA GPU recovery paths

audit/internal/platform/sat.go

@@ -404,14 +404,7 @@ func normalizeNvidiaBusID(v string) string {
 }
 
 func (s *System) ResetNvidiaGPU(index int) (string, error) {
-	if index < 0 {
-		return "", fmt.Errorf("gpu index must be >= 0")
-	}
-	out, err := runNvidiaRecover("reset-gpu", strconv.Itoa(index))
-	if strings.TrimSpace(out) == "" && err == nil {
-		out = "GPU reset completed.\n"
-	}
-	return out, err
+	return resetNvidiaGPU(index)
 }
 
 // RunNCCLTests runs nccl-tests all_reduce_perf across the selected NVIDIA GPUs.