Few suggestions:
The description you've given us here on HN is so much better than on your landing page here: https://tablane.net/ The first thoughts I had were: "Okay, Productivity. And it's 'Next Generation'. What does that even mean? The screenshot is pretty but I don't really understand what it's showing". I then read the GitHub description "Tablane is a workspace that adapts to your needs. It's as minimal or as powerful as you need it to be." and ended up even more confused. What is a workspace in this context? It's great it can adapt to my needs, but I don't know what it even does. Once I read the description here on HN, it made a lot more sense. It'd be useful to explain the hierarchy of workspaces/spaces/tasks a bit more.
There are a few dialogs that don't seem to support keyboard controls (like Enter), I've opened a PR for this.
When I try and run it locally to test my PR, it seems to complain with an "AppError: Invalid access token" on the backend. I get a "Something went wrong" error message (and the XHR fails with a CORS error). What am I doing wrong?