OUAGADOUGOU, Burkina Faso — In a sport long-indebted to imported strategy and outside investment, Friday’s narrow Confederation Cup victory at Stade du 4 Août was less a mere result than a thunderclap. USFA 1, Gbohloé-su des Lacs 0: on paper, just a slender home win in the first preliminary round of Africa’s secondary club competition. On the field, however, it was a stubborn rebuke to the growing orthodoxy that only cash-rich clubs thrive, a resounding vote for community-rooted football in a changing continental landscape.