feat: Implement ChatGPT account registration flow and establish core backend API infrastructure with logging utilities.

backend/internal/api/error_cleaner.go

@@ -80,7 +80,7 @@ func checkAndCleanErrors() {
 	}
 
 	// 执行清理
-	logger.Info("开始定期清理错误账号...", "", "cleaner")
+	logger.Status("定期清理错误账号中...", "", "cleaner")
 
 	errorAccounts, err := fetchAllErrorAccounts()
 	if err != nil {

backend/internal/api/owner_ban_check.go

@@ -309,7 +309,7 @@ func runBanCheckTask(owners []database.TeamOwner, concurrency int) {
 		lastBanCheckTime = time.Now()
 	}()
 
-	logger.Info(fmt.Sprintf("开始封禁检查: 共 %d 个母号, 并发数: %d", len(owners), concurrency), "", "ban-check")
+	logger.Status(fmt.Sprintf("封禁检查中: 共 %d 个母号, 并发数: %d", len(owners), concurrency), "", "ban-check")
 
 	// 任务队列
 	taskChan := make(chan database.TeamOwner, len(owners))

backend/internal/api/s2a_clean.go

@@ -47,7 +47,7 @@ func HandleCleanErrorAccounts(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	logger.Info("开始清理错误账号...", "", "s2a")
+	logger.Status("清理错误账号中...", "", "s2a")
 
 	// Step 1: 获取所有错误账号
 	errorAccounts, err := fetchAllErrorAccounts()
@@ -68,7 +68,7 @@ func HandleCleanErrorAccounts(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	logger.Info(fmt.Sprintf("找到 %d 个错误账号，开始删除...", len(errorAccounts)), "", "s2a")
+	logger.Status(fmt.Sprintf("找到 %d 个错误账号，删除中...", len(errorAccounts)), "", "s2a")
 
 	// Step 2: 逐条删除
 	success := 0

backend/internal/api/team_process.go

@@ -740,7 +740,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 			memberStartTime := time.Now()
 			memberLogPrefix := fmt.Sprintf("%s [成员 %d]", logPrefix, memberIdx+1)
 
-			logger.Info(fmt.Sprintf("%s 开始入库 | 邮箱: %s", memberLogPrefix, memberChild.Email), memberChild.Email, "team")
+			logger.Status(fmt.Sprintf("%s 入库中... | 邮箱: %s", memberLogPrefix, memberChild.Email), memberChild.Email, "team")
 
 			var s2aSuccess bool
 			var lastError string
@@ -852,7 +852,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 	if req.IncludeOwner && teamProcessState.Running {
 		ownerLogPrefix := fmt.Sprintf("%s [母号  ]", logPrefix)
 		ownerStartTime := time.Now()
-		logger.Info(fmt.Sprintf("%s 开始母号入库...", ownerLogPrefix), owner.Email, "team")
+		logger.Status(fmt.Sprintf("%s 母号入库中...", ownerLogPrefix), owner.Email, "team")
 
 		var ownerSuccess bool
 		var lastError string

backend/internal/api/upload.go

@@ -83,9 +83,9 @@ func HandleUploadValidate(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// 并发验证账号并获取 account_id（只保留 team 账号）
-	logger.Info(fmt.Sprintf("开始验证账号: 共 %d 个，只导入 plan 为 team 的账号", len(owners)), "", "upload")
+	logger.Status(fmt.Sprintf("验证账号中: 共 %d 个，只导入 plan 为 team 的账号", len(owners)), "", "upload")
 	validOwners, teamCount, nonTeamCount, failCount := validateAndFetchAccountIDs(owners, 20)
-	logger.Info(fmt.Sprintf("验证完成: team=%d, 非team=%d, 失败=%d", teamCount, nonTeamCount, failCount), "", "upload")
+	logger.Success(fmt.Sprintf("验证完成: team=%d, 非team=%d, 失败=%d", teamCount, nonTeamCount, failCount), "", "upload")
 
 	if len(validOwners) == 0 {
 		Error(w, http.StatusBadRequest, fmt.Sprintf("没有有效的 team 账号（共 %d 个，非team: %d，失败: %d）", len(owners), nonTeamCount, failCount))
@@ -141,7 +141,7 @@ func HandleRefetchAccountIDs(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	logger.Info(fmt.Sprintf("开始重新获取 account_id: 共 %d 个", len(owners)), "", "upload")
+	logger.Status(fmt.Sprintf("重新获取 account_id 中: 共 %d 个", len(owners)), "", "upload")
 
 	// 并发获取 account_id
 	var wg sync.WaitGroup

backend/internal/logger/logger.go

@@ -25,6 +25,20 @@ var (
 	listMu    sync.RWMutex
 )
 
+// 旋转动画字符
+var spinnerFrames = []string{"⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"}
+var spinnerIndex int
+var spinnerMu sync.Mutex
+
+// getSpinnerChar 获取下一个旋转字符
+func getSpinnerChar() string {
+	spinnerMu.Lock()
+	defer spinnerMu.Unlock()
+	char := spinnerFrames[spinnerIndex%len(spinnerFrames)]
+	spinnerIndex++
+	return char
+}
+
 // AddListener 添加日志监听器
 func AddListener(id string) chan LogEntry {
 	listMu.Lock()
@@ -130,6 +144,10 @@ func log(level, message, email, module string) {
 	case "warning":
 		prefix = "WARN   "
 		color = colorYellow
+	case "status":
+		// 状态日志使用旋转动画字符
+		prefix = getSpinnerChar() + " WAIT "
+		color = colorCyan
 	}
 
 	// 模块名固定宽度（8字符）
@@ -184,6 +202,11 @@ func Warning(message, email, module string) {
 	log("warning", message, email, module)
 }
 
+// Status 记录状态日志（带旋转动画字符，用于等待中的操作）
+func Status(message, email, module string) {
+	log("status", message, email, module)
+}
+
 // GetLogs 获取日志
 func GetLogs(limit int) []LogEntry {
 	logsMu.RLock()

backend/internal/register/chatgpt.go

@@ -301,7 +301,7 @@ func APIRegister(email, password, realName, birthdate, proxy string, logPrefix s
 
 		fpInfo := reg.Client.GetFingerprintInfo()
 		if retry == 0 {
-			logger.Info(fmt.Sprintf("%s 初始化会话... [%s]", logPrefix, fpInfo), email, "register")
+			logger.Status(fmt.Sprintf("%s 初始化会话... [%s]", logPrefix, fpInfo), email, "register")
 		} else {
 			logger.Warning(fmt.Sprintf("%s 403 重试 %d/3，换指纹 [%s]", logPrefix, retry, fpInfo), email, "register")
 		}
@@ -343,10 +343,9 @@ func APIRegister(email, password, realName, birthdate, proxy string, logPrefix s
 	if err := reg.SendVerificationEmail(); err != nil {
 		return nil, fmt.Errorf("发送验证邮件失败: %v", err)
 	}
-	logger.Success(fmt.Sprintf("%s 已发送验证邮件", logPrefix), email, "register")
 
-	// 获取验证码 (带超时 90s)
-	logger.Info(fmt.Sprintf("%s 等待验证码...", logPrefix), email, "register")
+	// 获取验证码 (带超时 90s) - 合并日志，使用 Status 显示等待状态
+	logger.Status(fmt.Sprintf("%s 验证邮箱中...", logPrefix), email, "register")
 	otpCode, err := mail.GetVerificationCode(email, 90*time.Second)
 	if err != nil {
 		return nil, err