feat: Introduce advanced TLS client with browser fingerprinting and new backend modules for API processing, authentication, mail, and ChatGPT registration.

backend/internal/api/team_process.go

@@ -67,6 +67,18 @@ type TeamProcessState struct {
 
 var teamProcessState = &TeamProcessState{}
 
+// waitGroupWithTimeout 带超时的 WaitGroup 等待，超时返回 false
+func waitGroupWithTimeout(wg *sync.WaitGroup, timeout time.Duration) bool {
+	done := make(chan struct{})
+	go func() { wg.Wait(); close(done) }()
+	select {
+	case <-done:
+		return true
+	case <-time.After(timeout):
+		return false
+	}
+}
+
 // getProxyDisplay 获取代理显示名称（隐藏密码）
 func getProxyDisplay(proxy string) string {
 	if proxy == "" {
@@ -648,8 +660,17 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 		memberLogPrefix := fmt.Sprintf("%s [Member %d]", logPrefix, memberIdx+1)
 		memberStartTime := time.Now()
 
-		// 获取入库信号量
-		s2aSem <- struct{}{}
+		// 获取入库信号量（3分钟超时）
+		select {
+		case s2aSem <- struct{}{}:
+		case <-time.After(3 * time.Minute):
+			logger.Warning(fmt.Sprintf("%s 入库信号量等待超时 (3分钟)", memberLogPrefix), memberEmail, "team")
+			atomic.AddInt32(&s2aFailCount, 1)
+			memberMu.Lock()
+			result.Errors = append(result.Errors, fmt.Sprintf("成员 %d 入库信号量超时", memberIdx+1))
+			memberMu.Unlock()
+			return false
+		}
 		defer func() { <-s2aSem }()
 
 		// 从代理池获取随机代理（默认轮询使用代理池，无代理则直连）
@@ -764,23 +785,29 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 			currentEmail := email
 			currentPassword := password
 			if attempt > 0 {
-				// 重试时使用新邮箱
-				currentEmail = mail.GenerateEmail()
-				currentPassword = register.GeneratePassword()
-				logger.Warning(fmt.Sprintf("%s 重试 (第%d次), 新邮箱: %s", memberLogPrefix, attempt+1, currentEmail), currentEmail, "team")
+				// 注册失败重试：保持原邮箱（邀请已发送），仅重新注册
+				logger.Warning(fmt.Sprintf("%s 注册重试 (第%d次), 保持邮箱: %s", memberLogPrefix, attempt+1, currentEmail), currentEmail, "team")
 			}
 
-			// 发送邀请
-			if err := inviter.SendInvites([]string{currentEmail}); err != nil {
-				errStr := err.Error()
-				logger.Error(fmt.Sprintf("%s 邀请失败: %v", memberLogPrefix, err), currentEmail, "team")
+			// 首次尝试时发送邀请，重试时跳过（邀请已发送到该邮箱）
+			if attempt == 0 {
+				if err := inviter.SendInvites([]string{currentEmail}); err != nil {
+					errStr := err.Error()
+					logger.Error(fmt.Sprintf("%s 邀请失败: %v", memberLogPrefix, err), currentEmail, "team")
 
-				// 检测 Team 已达邀请上限（401 或 maximum number of seats）
-				if strings.Contains(errStr, "401") || strings.Contains(errStr, "maximum number of seats") {
-					markTeamExhausted()
-					return false
+					// 检测 Team 已达邀请上限（401 或 maximum number of seats）
+					if strings.Contains(errStr, "401") || strings.Contains(errStr, "maximum number of seats") {
+						markTeamExhausted()
+						return false
+					}
+					// 邀请失败时换新邮箱重试
+					email = mail.GenerateEmail()
+					password = register.GeneratePassword()
+					currentEmail = email
+					currentPassword = password
+					logger.Warning(fmt.Sprintf("%s 邀请失败，换新邮箱: %s", memberLogPrefix, currentEmail), currentEmail, "team")
+					continue
 				}
-				continue
 			}
 
 			// 再次检查是否应该停止（邀请期间其他 goroutine 可能已标记）
@@ -841,11 +868,15 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 			registerAndS2AMember(idx, email, password)
 		}(i)
 	}
-	regWg.Wait()
+	if !waitGroupWithTimeout(&regWg, 8*time.Minute) {
+		logger.Warning(fmt.Sprintf("%s 注册阶段超时 (8分钟)，继续处理已完成的成员", logPrefix), owner.Email, "team")
+	}
 
 	// 如果 Team 已满，等待已启动的入库完成
 	if isTeamExhausted() {
-		s2aWg.Wait()
+		if !waitGroupWithTimeout(&s2aWg, 5*time.Minute) {
+			logger.Warning(fmt.Sprintf("%s 入库等待超时 (5分钟)", logPrefix), owner.Email, "team")
+		}
 		result.AddedToS2A = int(atomic.LoadInt32(&s2aSuccessCount))
 		result.Errors = append(result.Errors, "Team 邀请已满")
 		result.DurationMs = time.Since(startTime).Milliseconds()
@@ -874,7 +905,9 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 	}
 
 	// 等待所有入库完成
-	s2aWg.Wait()
+	if !waitGroupWithTimeout(&s2aWg, 10*time.Minute) {
+		logger.Warning(fmt.Sprintf("%s 入库阶段超时 (10分钟)，继续统计结果", logPrefix), owner.Email, "team")
+	}
 
 	// 补救后再次检查 Team 是否已满
 	if isTeamExhausted() {