Use browser notifications in Synapse studio windows to signal end of execution and tasks (notify users)
For lengthy operations (configurable?) add support for native browser notifications, so instead of users wait and/or constantly peeking regarding a running cell/task, they can switch to other thing and be notified when that ends (success or error),etc
Could be extended to any lengthy operation, constant peeking rather unproductive.
similar extension for native jupyter (triggered on kernel becomes idle after configurable time)