Are there any aircraft with retractable vortex generators? From this answer, “Of course, these also add drag, even when the wing is not stalling, so they are only added where needed”.  Are there any aircraft that have vortex generators that are retractable so that if the flight computers determine that the wing is stalling, the vortex generators are automatically deployed without them causing drag all the time?
Bell Textron filed a patent for retractable vortex generators in 2006. The patent is here.

Boeing also filed a patent for vortex generators that extend simultaneously with a leading edge slat here.