feat: Initialize core application structure with backend configuration, database, API, and a comprehensive frontend UI for account pooling and management.

backend/internal/config/config.go

@@ -42,6 +42,9 @@ type Config struct {
 	AutoPauseOnExpired bool   `json:"auto_pause_on_expired"`
 	AccountsPath       string `json:"accounts_path"`
 
+	// 站点配置
+	SiteName string `json:"site_name"`
+
 	// 邮箱服务
 	MailServices []MailServiceConfig `json:"mail_services"`
 }