Current Limitations
As of now, it only appears to be possible to select each thread in the Assistant individually after going to "Select threads" in the kebab menu.
Proposed Improvements
Multi-Selection Shortcuts
Selection would be easier if it was possible to select multiple threads at once by first selecting one thread and then another one while holding the Shift key. In addition to the two threads, this should select all other threads in between, as is common with other applications. This would greatly reduce the time needed to select multiple threads, which in turn reduces user frustration, as individual selection feels cumbersome.
Additionally, it would be nice if it was possible to select threads without first going to the selection menu, as the checkboxes are not needed on desktop. This could be done by allowing for the aforementioned selection using the Shift key in addition to allowing for selection and deselection while holding the Ctrl key. This is common in other applications, like the Windows File Explorer, and would improve user experience by decreasing frustration caused by unnecessary extra steps.
In this case, the action menu at the bottom could either automatically appear when multiple threads are selected, or remain permanently visible to allow modification of the current thread as well.
Additional Shortcuts
In addition, allowing deletion of the selected thread(s) using the Del key would also allow for a more streamlined experience. To prevent accidental deletion, a confirmation dialog could be used or the option to undo this action using Ctrl + Z could be introduced. The latter is common in other applications and could also be helpful in preventing accidental deletion through the "Delete" option in each thread's kebab menu.
Other common shortcuts, like Ctrl + A, Shift + Home, Shift + End, or the use of arrow keys in combination with the Shift key could also be considered. Deselection could be achieved by clicking somewhere else or starting a new selection by clicking on an individual thread without any additional keys.
