Cat Whimsy With Mercury’s return to the sign of the cat, this time in backward motion, the weekend gets a delightful dusting of whimsy. Just because an impulse is playful doesn’t mean it will be taken as such. Misunderstandings are still possible, if not prevalent under the Mercury retrograde. Go gingerly, testing as you go. The cat’s effectiveness can often be attributed to a talent for treading lightly. LEO (July 23-Aug. 22). Fortune favors your choice to focus small and get the little things so right. Beautifully attended details will attract people who know and appreciate fine work. You’ll…