Upgrade to Jupyter Collaboration 4

[dlqqq]

Description

This PR upgrades to jupyterlab_chat to use jupyter_collaboration~=4.0.

@andrii-i will help test this PR and leave feedback in the comments below.

Note: We would like a release/pre-release including this PR soon. This PR can be safely reverted / modified afterwards if necessary since we are still on v0.

[github-actions]

👈 Launch a Binder on branch dlqqq/jupyter-chat/upgrade-jcollab-4

[andrii-i]

CI is green and I've tested main user flows is this PR locally: creating a chat, chatting with multiple users (all from 1 PC though) in side panel and in main panel, editing messages, deleting messages works well.

So this PR looks good to me. At the same time I've authored a large part of it so it could definitely use more reviews.

[brichet]

Thanks for working on this.

For the context, what is the benefit of upgrading jupyter_collaboration? I understand this is for jupyter-ai, but I miss some context. Is this to remove the RTC: prefix ?

Also I wonder if we should keep a branch compatible with jupyter_collaboration v3, before moving forward with v4 ?

[andrii-i]

@brichet thank you for looking into this. jupyter-collaboration v4 brings a bunch of improvements to stability and bug fixes but update of @jupyter/collaborative-drive to v4 and associated use of content providers to remove RTC prefix that you mention is definitely one of the major ones (it also moves tokens to JupyterLab, changes tokens used, and introduces dependency on JupyterLab 4). I wasn’t able to find one place that summarizes all jupyter-collaboration v4 changes but they can be seen in the history of commits and PR descriptions https://github.com/jupyterlab/jupyter-collaboration/commits/main/.

I have also just created a 0.12.x branch https://github.com/jupyterlab/jupyter-chat/tree/0.12.x to keep a branch compatible with jupyter_collaboration v3 just in case as you suggest and bumped @jupyterlab, @lumino package versions, ts version, @notebook packages to ones used in JupyterLab 4.4.

Package updates necessitated adding a small mock for testing so I also implemented that.

All in all, CI is green and this PR is ready for final review and merge.

[dlqqq]

Andrii's updates look good to me as well. Can't approve since I was the one who opened this PR.

[brichet]

Looks good, thanks @dlqqq @andrii-i