MANILA, Philippines — Labor group Sentro ng mga Nagkakaisa at Progresibong Mangagawa (Sentro) has called for a national summit on the cost-of-living crisis as September inflation could reach 7.4 percent, its highest level in more than three years. The Bangko Sentral ng Pilipinas (BSP) earlier forecast September inflation at 6.4 to 7.4 percent, up from