ST. LOUIS — At the end of a day marked by a cosmic phenomenon, the Phillies pulled off their own nowyou- see-me, now-you-don’t, now-you-see-me-again magic. One out from eking out a victory over the Cardinals in the opener of a three-game series, Jeff Hoffman gave up two runs in the ninth inning to tie the game. But the Phillies scored twice in the 10th and got a white-knuckle save from Gregory…