feat: add event handling to auto create teamfolders upon circle creation

[stediefan]

feat: add team_circle_id flag to teamfolder to uniquely link a team
feat: adminUI: add filters for classic teamfolders and the newly linked ones
todo: sensible naming for the two types of folders

Assisted by: GitHub Copilot:Claude Sonnet 5
Assisted by: GitHub Copilot:GPT-5.6 Terra
Assisted by: GitHub Copilot:Kimi K2.7 Code

Related Issues in Circles:
nextcloud/circles#2661
nextcloud/circles#2663
nextcloud/circles#2669

Related Pull Request in server: nextcloud/server#62476
Related Pull Request in circles: nextcloud/circles#2675

Reopened from: #4941

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI

[Jerome-Herbinet]

Hi @stediefan

If I understand correctly, this PR ensures that if a team folder is assigned to a team, it will now appear in the team’s dashboard as an item shared with that team.

I get the impression (if I understand correctly) that this PR only applies to Team Folders 23.0.x for Nextcloud 35.

But it seems to me that this PR hasn’t been backported to the earlier branches of Team Folders 22, 21, and 20.

Would that be possible?

Thanks

[artonge]

But it seems to me that this PR hasn’t been backported to the earlier branches of Team Folders 22, 21, and 20.

Hey @Jerome-Herbinet, this is a feature, and we don't usually backport features :).

[Jerome-Herbinet]

But it seems to me that this PR hasn’t been backported to the earlier branches of Team Folders 22, 21, and 20.

Hey @Jerome-Herbinet, this is a feature, and we don't usually backport features :).

Hello @artonge... OK, but, in some app cases, features are targeting the next / current stable version and some previous versions BTW ; that's why I'm asking.

[artonge]

but, in some app cases, features are targeting the next / current stable version and some previous versions

That's not the case of either groupfolders or circles, or am I missing something?