Fix harsh shadows on the face — AI Lighting filter

Overhead noon sun and bare flash both commit the same crime: hard shadows under the eyes, nose and chin that make everyone look tired and mildly sinister. This filter repairs exactly that — lifting and softening harsh facial shadows while keeping the photo's overall light direction and mood intact. It's a targeted correction rather than a re-light: the photo stays yours, minus the raccoon eyes. One of the most quietly useful fixes in the catalog.