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

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()