ErwanGou

> Is this PR work in progress? Not really. The recent commits are minor changes to try fixing the issues raised by the jabref bot, but I don't understand why...

> But why there are TODO comments? The issue in its entirety is not resolved by the actual code that I propose so I detailled what is missing in the...

I recently added the last features and modified the PR message. Apart from what I explained in the _Next steps_ section --which can't be fixed-- it should work properly. I...

@InAnYan I couldn't reproduce this error --maybe because I use Windows, I tried all the ways to add a PDF to an empty group and it never failed-- but thanks...

@InAnYan I think I fixed the issue with `GroupsParser.java`. As I said I had to modify many constructors so in total it impacted 87 files. It should work properly now...

In fact I managed to pull the most recent version of Jabref without committing my changes so I can now run `:jabref:run`. I tested the app and at first glance...

@InAnYan I recently fixed a slight bug with the user interface. Since the PDF import is a background task, when a DirectoryGroup is created it first doesn't contain any entry,...

@InAnYan I couldn't reproduce your error but it should be fixed with commit [f858e08](https://github.com/JabRef/jabref/pull/14252/commits/f858e0865bcafdb3d7ba752835eb1c87a453fc99). I tried to fix it without modifying so many files but now I really think there...

@InAnYan - In the file `GroupNodeViewModel.java` we can choose whether it is possible or not to add entries manually in a group of a given type. I didn't allow it...

> * It should not be possible to remove subgroups > * It should be possible to sort A-Z and Z-A I can make it so that only the root...