Aug. 29—By relying on guile, a symphony conductor’s sense for changing rhythm, and his world-class curveball, Adam Wainwright hopscotched around baserunners for his finest start of the season. And the whole time, he helped illustrate how the Cardinals would benefit from adding starters who are more direct — who can dominate, not just defy. Wainwright pitched superbly enough to earn win No. 199,…