The Los Angeles Philharmonic announced Tuesday that it has named Daniel Harding the orchestra’s 12th music director, ending three years of intense speculation over the orchestra’s future after Gustavo Dudamel leaves in August to head the New York Philharmonic. Harding will begin a six-year contract for up to a dozen weeks of concerts a season, beginning in the fall of 2027, roughly 30 years after the British prodigy made his U.S. debut conducting the L.A. Phil at the 1997 Ojai Festival. It was a nervous-making trial by fire that began as a nail-biter. But by the festival’s end, the wunderkind had excitingly found his way with the orchestra. Harding has since become a favorite, if occasional, L.A. Phil guest conductor while rising to the top rungs of the international orchestral circuit, along with obtaining a commercial flying license and piloting, now and then, for Air France. He led a pair of superior Rachmaninoff programs in his belated debut at the Hollywood Bowl last summer shortly after one of Dudamel’s greatest Bowl performances ever. Harding so …