To answer your questions:
1) There is possibility to import/export Server data like users, groups, sandboxes, schedulers since 3.5.0 release - for details see http://doc.cloveretl.com/documentation/ ... onfig.html
2) There is no build process, graphs/JobFlows are interpreted. So your sandboxes can be freely copied, stored in VCS, etc.
3) Yes, you may create project in designer first and then export into Server sandbox - http://doc.cloveretl.com/documentation/ ... ndbox.html
Please keep in mind, that some components does not run in standalone Designer - for example JobFlows.
I hope this helps.