The Alexandria, once a draw on Geary, has sat empty for years. Affordable housing is the latest idea to flop there. How does this movie end? — The curse of the pharaohs has plagued 5400 Geary Boulevard since 2004. The Alexandria Theater, once guarded by sphinxes and Ramses heads, sits abandoned along the busy commercial corridor, gathering graffiti along with garbage, cobwebs, and soot. Behind the curtains, in the bureaucratic bowels of the city’s building and planning…