Cancún has begun targeting long-neglected properties that have become magnets for fires, crime, and squatters. City crews sealed several sites last week and flagged roughly 30 more for action. Officials say the push is about safety and dignity for nearby families, but it’s also about fixing the city’s curb appeal in high-traffic areas. The work is early, and the list will likely grow, but the signal is clear: if a property sits open and dangerous…