optimizer weekday filter: search strategies by day of week

the strategy optimizer now has a weekday filter, so you can limit a search to the days of the week you actually trade. for example, you can run an ORB strategy search on mondays only and see how the best settings hold up on that day alone.

the weekday toggles sit below the direction setting, with every supported day selected by default. at least one day has to stay on. strategies the optimizer finds will only take trades on the days you selected, and the combination count and progress bar reflect only those days.

your weekday selection is saved with the rest of your optimizer settings, so it carries over to reruns and saved runs. strategies built from older saved runs keep working exactly as before.