When the sun dips behind the minarets of the Badshahi Mosque, the city of Lahore does not simply switch off its lights; it flips a switch to another rhythm, one that hums beneath the familiar chatter of chai stalls and the clatter of rickshaws. In the alleys where the scent of incense mingles with the faint perfume of street food, a quiet, secret economy exists—one that most visitors...