- log to linux fd (pipe) to open terminal

 - show state in tray

 - tray menu
    - force sync
    - ~ current Etag
    - ~ current SHA
    - ~ last sync ts
    - check sync
    - quit
    - show log (open terminal /w log)
 
 - config via json + params override

 - colorful log
 - download/upload progress log

 - logfile in workdir