新增备份监控与定时配置

backend/internal/config/config.go

@@ -29,6 +29,7 @@ type Config struct {
 	Realname                   RealnameConfig
 	Log                        LogConfig
 	RateLimit                  RateLimitConfig
+	BackupStatusFile           string
 }
 
 type StorageConfig struct {
@@ -130,6 +131,7 @@ func Load() Config {
 			Enabled:           getEnvBool("RATE_LIMIT_ENABLED", true),
 			RequestsPerMinute: getEnvInt("RATE_LIMIT_REQUESTS_PER_MINUTE", 300),
 		},
+		BackupStatusFile: getEnv("BACKUP_STATUS_FILE", "/var/run/hfb-backup-status/status.json"),
 	}
 }