The tasks grid (from the menu: Scheduler -> Task Library) is currently using TurboGears @paginate. It should be ported to use Backgrid with a JSON API on the server side.
This is similar to the other Backgrid ports we have done such as bug 1275999.
Some similar ports in the past, these could be used as a template for this one since there is nothing special/unusual about the tasks grid that I can think of:
but it should be simpler than all of those because there are no relationship columns and there is no Add/Create button on this grid.
The grid currently has an action column for Disable, but that really belongs on the task page and not the task grid: bug 887068.
We noticed that the query builder on /tasks/ no longer offers to search by type, excluded osmajors, or excluded arches.
Beaker 24.0 has been released.