Is your feature request related to a problem? Please describe.
There is currently no straightforward way to trigger an external workflow when a task is completed in Label Studio.
Describe the solution you'd like
Add a Task Completed button that triggers a webhook when a task is marked as completed.
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Additional context
I found a similar issue opened in 2023, but since it has been a while and there does not seem to be recent progress, I’m opening a new issue to revisit this request.