Correct - Something similiar to this -- Scott's Digital Community: Creating a Custom Watched Folder Service for Adobe Experience Manager 6.3 AEM after all is a Java platform and you can build a Java solution.

Correct - you can either use Desktop App or develop your own solution - like a special watched folder and an AEM Scheduler Service.

Look at the Article that Ratna pointed you too. You can populate a Select Drop down via the WCMUsePojo class. This works! Manipulating the DOM via JS you showed is not best practice.

AEM does not have a tool for every use case. However - using the AEM APIs, you can build custom functionality to address use cases, like this one - as Arun correctly states.

Try rebuilding your bundle using Maven 13 Archetype.Creating an Adobe Experience Manager 6.4 Project using Adobe Maven Archetype 13The benefit of this is it builds new POMs and new project. I have not seen these reported errors that you are referring to when a new Maven 13 project is built. Trying t...

As you suggested - OOTB -  the value is a String - does not accept a String[]. I do not think this is possible.

You can code a service to watch a local folder on the system and react to it.

Are you building a Maven Arch 13 project?

Ratna Kumar​ can you comment here too please.

Ratna and I are working on this use case BTW, it will make a good article/example.