This differential removes a safeguard on preliminary focus which is not always needed in the current state of the Focus module.
The original code prevented the auto-focus method from starting without prior manual focus done at least once.
This safeguard was here to prevent the situation where the optical train would be too far from the focal plane to allow star detection.
In any case, it does not solve any particular problem, and gets in the way of the Scheduler when it starts the observatory by itself.
This differential also adds a warning log about having a periodic or HFR refocus procedure set in Capture while no Focus step is set for the Scheduler job.