feat: add -debug flag with file logging to fscan_debug.log

common/logger.go

@@ -30,6 +30,9 @@ func getGlobalLogger() *logging.Logger {
 			Silent:       fv.Silent,
 			StartTime:    GetGlobalState().GetStartTime(),
 		}
+		if fv.Debug {
+			config.DebugLogFile = "fscan_debug.log"
+		}
 		globalLogger = logging.NewLogger(config)
 		globalLogger.SetCoordinatedOutput(LogWithProgress)
 	})
@@ -78,3 +81,10 @@ func LogVuln(result string) { getGlobalLogger().Vuln(result) }
 
 // LogError 输出错误日志
 func LogError(errMsg string) { getGlobalLogger().Error(errMsg) }
+
+// CloseLogger 关闭日志系统，释放文件资源
+func CloseLogger() {
+	if globalLogger != nil {
+		globalLogger.Close()
+	}
+}