feat: add API for team processes

backend/internal/api/team_process.go

@@ -743,10 +743,12 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 			memberMu.Unlock()
 			logger.Success(fmt.Sprintf("%s ✓ 注册成功 (耗时: %.1fs)", memberLogPrefix, regDuration.Seconds()), currentEmail, "team")
 
-			// 流水线：注册成功后立即启动入库（异步）
+			// 流水线：注册成功后等待 3 秒再开始入库（避免触发邮箱验证）
 			s2aWg.Add(1)
 			go func(idx int, e, p string) {
 				defer s2aWg.Done()
+				// 等待 3 秒，让账号状态稳定
+				time.Sleep(3 * time.Second)
 				success := doS2A(idx, e, p)
 				memberMu.Lock()
 				children[idx].S2ADone = true